Removed old mbedtls, replacing with submodule.

15 files changed, 0 insertions, 12890 deletions

diff --git a/lib/mbedtls-2.27.0/programs/ssl/CMakeLists.txt b/lib/mbedtls-2.27.0/programs/ssl/CMakeLists.txt
deleted file mode 100644
index dfc16a5..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/CMakeLists.txt
+++ /dev/null
@@ -1,54 +0,0 @@
-set(THREADS_USE_PTHREADS_WIN32 true)
-find_package(Threads)
-
-set(libs
-    ${mbedtls_target}
-)
-
-if(USE_PKCS11_HELPER_LIBRARY)
-    set(libs ${libs} pkcs11-helper)
-endif(USE_PKCS11_HELPER_LIBRARY)
-
-if(ENABLE_ZLIB_SUPPORT)
-    set(libs ${libs} ${ZLIB_LIBRARIES})
-endif(ENABLE_ZLIB_SUPPORT)
-
-set(executables
-    dtls_client
-    dtls_server
-    mini_client
-    ssl_client1
-    ssl_client2
-    ssl_context_info
-    ssl_fork_server
-    ssl_mail_client
-    ssl_server
-    ssl_server2
-)
-
-foreach(exe IN LISTS executables)
-    set(extra_sources "")
-    if(exe STREQUAL "ssl_client2" OR exe STREQUAL "ssl_server2")
-        list(APPEND extra_sources
-            ${CMAKE_CURRENT_SOURCE_DIR}/../test/query_config.c)
-    endif()
-    add_executable(${exe} ${exe}.c $<TARGET_OBJECTS:mbedtls_test>
-        ${extra_sources})
-    target_link_libraries(${exe} ${libs})
-    target_include_directories(${exe} PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}/../../tests/include)
-endforeach()
-
-set_property(TARGET ssl_client2 APPEND PROPERTY SOURCES
-    ssl_test_lib.c ${CMAKE_CURRENT_SOURCE_DIR}/../test/query_config.c)
-set_property(TARGET ssl_server2 APPEND PROPERTY SOURCES
-    ssl_test_lib.c ${CMAKE_CURRENT_SOURCE_DIR}/../test/query_config.c)
-
-if(THREADS_FOUND)
-    add_executable(ssl_pthread_server ssl_pthread_server.c $<TARGET_OBJECTS:mbedtls_test>)
-    target_link_libraries(ssl_pthread_server ${libs} ${CMAKE_THREAD_LIBS_INIT})
-    list(APPEND executables ssl_pthread_server)
-endif(THREADS_FOUND)
-
-install(TARGETS ${executables}
-        DESTINATION "bin"
-        PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
diff --git a/lib/mbedtls-2.27.0/programs/ssl/dtls_client.c b/lib/mbedtls-2.27.0/programs/ssl/dtls_client.c
deleted file mode 100644
index 8c302a0..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/dtls_client.c
+++ /dev/null
@@ -1,363 +0,0 @@
-/*
- *  Simple DTLS client demonstration program
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_printf     printf
-#define mbedtls_fprintf    fprintf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif
-
-#if !defined(MBEDTLS_SSL_CLI_C) || !defined(MBEDTLS_SSL_PROTO_DTLS) ||    \
-    !defined(MBEDTLS_NET_C)  || !defined(MBEDTLS_TIMING_C) ||             \
-    !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) ||        \
-    !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_RSA_C) ||      \
-    !defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C)
-int main( void )
-{
-    mbedtls_printf( "MBEDTLS_SSL_CLI_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "
-            "MBEDTLS_NET_C and/or MBEDTLS_TIMING_C and/or "
-            "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
-            "MBEDTLS_X509_CRT_PARSE_C and/or MBEDTLS_RSA_C and/or "
-            "MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C not defined.\n" );
-    mbedtls_exit( 0 );
-}
-#else
-
-#include <string.h>
-
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/debug.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/error.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/timing.h"
-
-/* Uncomment out the following line to default to IPv4 and disable IPv6 */
-//#define FORCE_IPV4
-
-#define SERVER_PORT "4433"
-#define SERVER_NAME "localhost"
-
-#ifdef FORCE_IPV4
-#define SERVER_ADDR "127.0.0.1"     /* Forces IPv4 */
-#else
-#define SERVER_ADDR "::1"
-#endif
-
-#define MESSAGE     "Echo this"
-
-#define READ_TIMEOUT_MS 1000
-#define MAX_RETRY       5
-
-#define DEBUG_LEVEL 0
-
-
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
-    fflush(  (FILE *) ctx  );
-}
-
-int main( int argc, char *argv[] )
-{
-    int ret, len;
-    mbedtls_net_context server_fd;
-    uint32_t flags;
-    unsigned char buf[1024];
-    const char *pers = "dtls_client";
-    int retry_left = MAX_RETRY;
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt cacert;
-    mbedtls_timing_delay_context timer;
-
-    ((void) argc);
-    ((void) argv);
-
-#if defined(MBEDTLS_DEBUG_C)
-    mbedtls_debug_set_threshold( DEBUG_LEVEL );
-#endif
-
-    /*
-     * 0. Initialize the RNG and the session data
-     */
-    mbedtls_net_init( &server_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    mbedtls_x509_crt_init( &cacert );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-    mbedtls_printf( "\n  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    mbedtls_entropy_init( &entropy );
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 0. Load certificates
-     */
-    mbedtls_printf( "  . Loading the CA root certificate ..." );
-    fflush( stdout );
-
-    ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
-                          mbedtls_test_cas_pem_len );
-    if( ret < 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok (%d skipped)\n", ret );
-
-    /*
-     * 1. Start the connection
-     */
-    mbedtls_printf( "  . Connecting to udp/%s/%s...", SERVER_NAME, SERVER_PORT );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_connect( &server_fd, SERVER_ADDR,
-                                         SERVER_PORT, MBEDTLS_NET_PROTO_UDP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_connect returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 2. Setup stuff
-     */
-    mbedtls_printf( "  . Setting up the DTLS structure..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                   MBEDTLS_SSL_IS_CLIENT,
-                   MBEDTLS_SSL_TRANSPORT_DATAGRAM,
-                   MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
-        goto exit;
-    }
-
-    /* OPTIONAL is usually a bad choice for security, but makes interop easier
-     * in this simplified example, in which the ca chain is hardcoded.
-     * Production code should set a proper ca chain and use REQUIRED. */
-    mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
-    mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-    mbedtls_ssl_conf_read_timeout( &conf, READ_TIMEOUT_MS );
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret );
-        goto exit;
-    }
-
-    if( ( ret = mbedtls_ssl_set_hostname( &ssl, SERVER_NAME ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, &server_fd,
-                         mbedtls_net_send, mbedtls_net_recv, mbedtls_net_recv_timeout );
-
-    mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
-                                            mbedtls_timing_get_delay );
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 4. Handshake
-     */
-    mbedtls_printf( "  . Performing the DTLS handshake..." );
-    fflush( stdout );
-
-    do ret = mbedtls_ssl_handshake( &ssl );
-    while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-           ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 5. Verify the server certificate
-     */
-    mbedtls_printf( "  . Verifying peer X.509 certificate..." );
-
-    /* In real life, we would have used MBEDTLS_SSL_VERIFY_REQUIRED so that the
-     * handshake would not succeed if the peer's cert is bad.  Even if we used
-     * MBEDTLS_SSL_VERIFY_OPTIONAL, we would bail out here if ret != 0 */
-    if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
-    {
-        char vrfy_buf[512];
-
-        mbedtls_printf( " failed\n" );
-
-        mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), "  ! ", flags );
-
-        mbedtls_printf( "%s\n", vrfy_buf );
-    }
-    else
-        mbedtls_printf( " ok\n" );
-
-    /*
-     * 6. Write the echo request
-     */
-send_request:
-    mbedtls_printf( "  > Write to server:" );
-    fflush( stdout );
-
-    len = sizeof( MESSAGE ) - 1;
-
-    do ret = mbedtls_ssl_write( &ssl, (unsigned char *) MESSAGE, len );
-    while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-           ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-
-    if( ret < 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-        goto exit;
-    }
-
-    len = ret;
-    mbedtls_printf( " %d bytes written\n\n%s\n\n", len, MESSAGE );
-
-    /*
-     * 7. Read the echo response
-     */
-    mbedtls_printf( "  < Read from server:" );
-    fflush( stdout );
-
-    len = sizeof( buf ) - 1;
-    memset( buf, 0, sizeof( buf ) );
-
-    do ret = mbedtls_ssl_read( &ssl, buf, len );
-    while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-           ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-
-    if( ret <= 0 )
-    {
-        switch( ret )
-        {
-            case MBEDTLS_ERR_SSL_TIMEOUT:
-                mbedtls_printf( " timeout\n\n" );
-                if( retry_left-- > 0 )
-                    goto send_request;
-                goto exit;
-
-            case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                mbedtls_printf( " connection was closed gracefully\n" );
-                ret = 0;
-                goto close_notify;
-
-            default:
-                mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n\n", (unsigned int) -ret );
-                goto exit;
-        }
-    }
-
-    len = ret;
-    mbedtls_printf( " %d bytes read\n\n%s\n\n", len, buf );
-
-    /*
-     * 8. Done, cleanly close the connection
-     */
-close_notify:
-    mbedtls_printf( "  . Closing the connection..." );
-
-    /* No error checking, the connection might be closed already */
-    do ret = mbedtls_ssl_close_notify( &ssl );
-    while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-    ret = 0;
-
-    mbedtls_printf( " done\n" );
-
-    /*
-     * 9. Final clean-ups and exit
-     */
-exit:
-
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf( "Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &server_fd );
-
-    mbedtls_x509_crt_free( &cacert );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    /* Shell can not handle large exit numbers -> 1 for errors */
-    if( ret < 0 )
-        ret = 1;
-
-    mbedtls_exit( ret );
-}
-#endif /* MBEDTLS_SSL_CLI_C && MBEDTLS_SSL_PROTO_DTLS && MBEDTLS_NET_C &&
-          MBEDTLD_TIMING_C && MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C &&
-          MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_RSA_C && MBEDTLS_CERTS_C &&
-          MBEDTLS_PEM_PARSE_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/dtls_server.c b/lib/mbedtls-2.27.0/programs/ssl/dtls_server.c
deleted file mode 100644
index 5f71ec9..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/dtls_server.c
+++ /dev/null
@@ -1,438 +0,0 @@
-/*
- *  Simple DTLS server demonstration program
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_printf     printf
-#define mbedtls_fprintf    fprintf
-#define mbedtls_time_t     time_t
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif
-
-/* Uncomment out the following line to default to IPv4 and disable IPv6 */
-//#define FORCE_IPV4
-
-#ifdef FORCE_IPV4
-#define BIND_IP     "0.0.0.0"     /* Forces IPv4 */
-#else
-#define BIND_IP     "::"
-#endif
-
-#if !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_SSL_PROTO_DTLS) ||    \
-    !defined(MBEDTLS_SSL_COOKIE_C) || !defined(MBEDTLS_NET_C) ||          \
-    !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_CTR_DRBG_C) ||        \
-    !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_RSA_C) ||      \
-    !defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C) ||         \
-    !defined(MBEDTLS_TIMING_C)
-
-int main( void )
-{
-    printf( "MBEDTLS_SSL_SRV_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "
-            "MBEDTLS_SSL_COOKIE_C and/or MBEDTLS_NET_C and/or "
-            "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
-            "MBEDTLS_X509_CRT_PARSE_C and/or MBEDTLS_RSA_C and/or "
-            "MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C and/or "
-            "MBEDTLS_TIMING_C not defined.\n" );
-    mbedtls_exit( 0 );
-}
-#else
-
-#if defined(_WIN32)
-#include <windows.h>
-#endif
-
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/ssl_cookie.h"
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/error.h"
-#include "mbedtls/debug.h"
-#include "mbedtls/timing.h"
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-#include "mbedtls/ssl_cache.h"
-#endif
-
-#define READ_TIMEOUT_MS 10000   /* 10 seconds */
-#define DEBUG_LEVEL 0
-
-
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
-    fflush(  (FILE *) ctx  );
-}
-
-int main( void )
-{
-    int ret, len;
-    mbedtls_net_context listen_fd, client_fd;
-    unsigned char buf[1024];
-    const char *pers = "dtls_server";
-    unsigned char client_ip[16] = { 0 };
-    size_t cliip_len;
-    mbedtls_ssl_cookie_ctx cookie_ctx;
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt srvcert;
-    mbedtls_pk_context pkey;
-    mbedtls_timing_delay_context timer;
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_context cache;
-#endif
-
-    mbedtls_net_init( &listen_fd );
-    mbedtls_net_init( &client_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    mbedtls_ssl_cookie_init( &cookie_ctx );
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_init( &cache );
-#endif
-    mbedtls_x509_crt_init( &srvcert );
-    mbedtls_pk_init( &pkey );
-    mbedtls_entropy_init( &entropy );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-#if defined(MBEDTLS_DEBUG_C)
-    mbedtls_debug_set_threshold( DEBUG_LEVEL );
-#endif
-
-    /*
-     * 1. Load the certificates and private RSA key
-     */
-    printf( "\n  . Loading the server cert. and key..." );
-    fflush( stdout );
-
-    /*
-     * This demonstration program uses embedded test certificates.
-     * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the
-     * server and CA certificates, as well as mbedtls_pk_parse_keyfile().
-     */
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
-                          mbedtls_test_srv_crt_len );
-    if( ret != 0 )
-    {
-        printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
-                          mbedtls_test_cas_pem_len );
-    if( ret != 0 )
-    {
-        printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret =  mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
-                         mbedtls_test_srv_key_len, NULL, 0 );
-    if( ret != 0 )
-    {
-        printf( " failed\n  !  mbedtls_pk_parse_key returned %d\n\n", ret );
-        goto exit;
-    }
-
-    printf( " ok\n" );
-
-    /*
-     * 2. Setup the "listening" UDP socket
-     */
-    printf( "  . Bind on udp/*/4433 ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_bind( &listen_fd, BIND_IP, "4433", MBEDTLS_NET_PROTO_UDP ) ) != 0 )
-    {
-        printf( " failed\n  ! mbedtls_net_bind returned %d\n\n", ret );
-        goto exit;
-    }
-
-    printf( " ok\n" );
-
-    /*
-     * 3. Seed the RNG
-     */
-    printf( "  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        printf( " failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret );
-        goto exit;
-    }
-
-    printf( " ok\n" );
-
-    /*
-     * 4. Setup stuff
-     */
-    printf( "  . Setting up the DTLS data..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_SERVER,
-                    MBEDTLS_SSL_TRANSPORT_DATAGRAM,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-    mbedtls_ssl_conf_read_timeout( &conf, READ_TIMEOUT_MS );
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_conf_session_cache( &conf, &cache,
-                                   mbedtls_ssl_cache_get,
-                                   mbedtls_ssl_cache_set );
-#endif
-
-    mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
-   if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 )
-    {
-        printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-        goto exit;
-    }
-
-    if( ( ret = mbedtls_ssl_cookie_setup( &cookie_ctx,
-                                  mbedtls_ctr_drbg_random, &ctr_drbg ) ) != 0 )
-    {
-        printf( " failed\n  ! mbedtls_ssl_cookie_setup returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check,
-                               &cookie_ctx );
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        printf( " failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
-                                            mbedtls_timing_get_delay );
-
-    printf( " ok\n" );
-
-reset:
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        printf("Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &client_fd );
-
-    mbedtls_ssl_session_reset( &ssl );
-
-    /*
-     * 3. Wait until a client connects
-     */
-    printf( "  . Waiting for a remote connection ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
-                    client_ip, sizeof( client_ip ), &cliip_len ) ) != 0 )
-    {
-        printf( " failed\n  ! mbedtls_net_accept returned %d\n\n", ret );
-        goto exit;
-    }
-
-    /* For HelloVerifyRequest cookies */
-    if( ( ret = mbedtls_ssl_set_client_transport_id( &ssl,
-                    client_ip, cliip_len ) ) != 0 )
-    {
-        printf( " failed\n  ! "
-                "mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, &client_fd,
-                         mbedtls_net_send, mbedtls_net_recv, mbedtls_net_recv_timeout );
-
-    printf( " ok\n" );
-
-    /*
-     * 5. Handshake
-     */
-    printf( "  . Performing the DTLS handshake..." );
-    fflush( stdout );
-
-    do ret = mbedtls_ssl_handshake( &ssl );
-    while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-           ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-
-    if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED )
-    {
-        printf( " hello verification requested\n" );
-        ret = 0;
-        goto reset;
-    }
-    else if( ret != 0 )
-    {
-        printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret );
-        goto reset;
-    }
-
-    printf( " ok\n" );
-
-    /*
-     * 6. Read the echo Request
-     */
-    printf( "  < Read from client:" );
-    fflush( stdout );
-
-    len = sizeof( buf ) - 1;
-    memset( buf, 0, sizeof( buf ) );
-
-    do ret = mbedtls_ssl_read( &ssl, buf, len );
-    while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-           ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-
-    if( ret <= 0 )
-    {
-        switch( ret )
-        {
-            case MBEDTLS_ERR_SSL_TIMEOUT:
-                printf( " timeout\n\n" );
-                goto reset;
-
-            case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                printf( " connection was closed gracefully\n" );
-                ret = 0;
-                goto close_notify;
-
-            default:
-                printf( " mbedtls_ssl_read returned -0x%x\n\n", (unsigned int) -ret );
-                goto reset;
-        }
-    }
-
-    len = ret;
-    printf( " %d bytes read\n\n%s\n\n", len, buf );
-
-    /*
-     * 7. Write the 200 Response
-     */
-    printf( "  > Write to client:" );
-    fflush( stdout );
-
-    do ret = mbedtls_ssl_write( &ssl, buf, len );
-    while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-           ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-
-    if( ret < 0 )
-    {
-        printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-        goto exit;
-    }
-
-    len = ret;
-    printf( " %d bytes written\n\n%s\n\n", len, buf );
-
-    /*
-     * 8. Done, cleanly close the connection
-     */
-close_notify:
-    printf( "  . Closing the connection..." );
-
-    /* No error checking, the connection might be closed already */
-    do ret = mbedtls_ssl_close_notify( &ssl );
-    while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-    ret = 0;
-
-    printf( " done\n" );
-
-    goto reset;
-
-    /*
-     * Final clean-ups and exit
-     */
-exit:
-
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        printf( "Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &client_fd );
-    mbedtls_net_free( &listen_fd );
-
-    mbedtls_x509_crt_free( &srvcert );
-    mbedtls_pk_free( &pkey );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    mbedtls_ssl_cookie_free( &cookie_ctx );
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_free( &cache );
-#endif
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-
-#if defined(_WIN32)
-    printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    /* Shell can not handle large exit numbers -> 1 for errors */
-    if( ret < 0 )
-        ret = 1;
-
-    mbedtls_exit( ret );
-}
-#endif /* MBEDTLS_SSL_SRV_C && MBEDTLS_SSL_PROTO_DTLS &&
-          MBEDTLS_SSL_COOKIE_C && MBEDTLS_NET_C && MBEDTLS_ENTROPY_C &&
-          MBEDTLS_CTR_DRBG_C && MBEDTLS_X509_CRT_PARSE_C && MBEDTLS_RSA_C
-          && MBEDTLS_CERTS_C && MBEDTLS_PEM_PARSE_C && MBEDTLS_TIMING_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/mini_client.c b/lib/mbedtls-2.27.0/programs/ssl/mini_client.c
deleted file mode 100644
index 0a9cc28..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/mini_client.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/*
- *  Minimal SSL client, used for memory measurements.
- *  (meant to be used with config-suite-b.h or config-ccm-psk-tls1_2.h)
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_printf          printf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif
-
-/*
- * We're creating and connecting the socket "manually" rather than using the
- * NET module, in order to avoid the overhead of getaddrinfo() which tends to
- * dominate memory usage in small configurations. For the sake of simplicity,
- * only a Unix version is implemented.
- *
- * Warning: we are breaking some of the abtractions from the NET layer here.
- * This is not a good example for general use. This programs has the specific
- * goal of minimizing use of the libc functions on full-blown OSes.
- */
-#if defined(unix) || defined(__unix__) || defined(__unix) || defined(__APPLE__)
-#define UNIX
-#endif
-
-#if !defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_ENTROPY_C) || \
-    !defined(MBEDTLS_NET_C) || !defined(MBEDTLS_SSL_CLI_C) || \
-    !defined(UNIX)
-
-int main( void )
-{
-    mbedtls_printf( "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_ENTROPY_C and/or "
-            "MBEDTLS_NET_C and/or MBEDTLS_SSL_CLI_C and/or UNIX "
-            "not defined.\n");
-    mbedtls_exit( 0 );
-}
-#else
-
-#include <string.h>
-
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-/*
- * Hardcoded values for server host and port
- */
-#define PORT_BE 0x1151      /* 4433 */
-#define PORT_LE 0x5111
-#define ADDR_BE 0x7f000001  /* 127.0.0.1 */
-#define ADDR_LE 0x0100007f
-#define HOSTNAME "localhost" /* for cert verification if enabled */
-
-#define GET_REQUEST "GET / HTTP/1.0\r\n\r\n"
-
-const char *pers = "mini_client";
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-const unsigned char psk[] = {
-    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
-    0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f
-};
-const char psk_id[] = "Client_identity";
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-/* This is tests/data_files/test-ca2.crt, a CA using EC secp384r1 */
-const unsigned char ca_cert[] = {
-    0x30, 0x82, 0x02, 0x52, 0x30, 0x82, 0x01, 0xd7, 0xa0, 0x03, 0x02, 0x01,
-    0x02, 0x02, 0x09, 0x00, 0xc1, 0x43, 0xe2, 0x7e, 0x62, 0x43, 0xcc, 0xe8,
-    0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02,
-    0x30, 0x3e, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
-    0x02, 0x4e, 0x4c, 0x31, 0x11, 0x30, 0x0f, 0x06, 0x03, 0x55, 0x04, 0x0a,
-    0x13, 0x08, 0x50, 0x6f, 0x6c, 0x61, 0x72, 0x53, 0x53, 0x4c, 0x31, 0x1c,
-    0x30, 0x1a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x13, 0x50, 0x6f, 0x6c,
-    0x61, 0x72, 0x73, 0x73, 0x6c, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45,
-    0x43, 0x20, 0x43, 0x41, 0x30, 0x1e, 0x17, 0x0d, 0x31, 0x33, 0x30, 0x39,
-    0x32, 0x34, 0x31, 0x35, 0x34, 0x39, 0x34, 0x38, 0x5a, 0x17, 0x0d, 0x32,
-    0x33, 0x30, 0x39, 0x32, 0x32, 0x31, 0x35, 0x34, 0x39, 0x34, 0x38, 0x5a,
-    0x30, 0x3e, 0x31, 0x0b, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
-    0x02, 0x4e, 0x4c, 0x31, 0x11, 0x30, 0x0f, 0x06, 0x03, 0x55, 0x04, 0x0a,
-    0x13, 0x08, 0x50, 0x6f, 0x6c, 0x61, 0x72, 0x53, 0x53, 0x4c, 0x31, 0x1c,
-    0x30, 0x1a, 0x06, 0x03, 0x55, 0x04, 0x03, 0x13, 0x13, 0x50, 0x6f, 0x6c,
-    0x61, 0x72, 0x73, 0x73, 0x6c, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45,
-    0x43, 0x20, 0x43, 0x41, 0x30, 0x76, 0x30, 0x10, 0x06, 0x07, 0x2a, 0x86,
-    0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x05, 0x2b, 0x81, 0x04, 0x00, 0x22,
-    0x03, 0x62, 0x00, 0x04, 0xc3, 0xda, 0x2b, 0x34, 0x41, 0x37, 0x58, 0x2f,
-    0x87, 0x56, 0xfe, 0xfc, 0x89, 0xba, 0x29, 0x43, 0x4b, 0x4e, 0xe0, 0x6e,
-    0xc3, 0x0e, 0x57, 0x53, 0x33, 0x39, 0x58, 0xd4, 0x52, 0xb4, 0x91, 0x95,
-    0x39, 0x0b, 0x23, 0xdf, 0x5f, 0x17, 0x24, 0x62, 0x48, 0xfc, 0x1a, 0x95,
-    0x29, 0xce, 0x2c, 0x2d, 0x87, 0xc2, 0x88, 0x52, 0x80, 0xaf, 0xd6, 0x6a,
-    0xab, 0x21, 0xdd, 0xb8, 0xd3, 0x1c, 0x6e, 0x58, 0xb8, 0xca, 0xe8, 0xb2,
-    0x69, 0x8e, 0xf3, 0x41, 0xad, 0x29, 0xc3, 0xb4, 0x5f, 0x75, 0xa7, 0x47,
-    0x6f, 0xd5, 0x19, 0x29, 0x55, 0x69, 0x9a, 0x53, 0x3b, 0x20, 0xb4, 0x66,
-    0x16, 0x60, 0x33, 0x1e, 0xa3, 0x81, 0xa0, 0x30, 0x81, 0x9d, 0x30, 0x1d,
-    0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04, 0x14, 0x9d, 0x6d, 0x20,
-    0x24, 0x49, 0x01, 0x3f, 0x2b, 0xcb, 0x78, 0xb5, 0x19, 0xbc, 0x7e, 0x24,
-    0xc9, 0xdb, 0xfb, 0x36, 0x7c, 0x30, 0x6e, 0x06, 0x03, 0x55, 0x1d, 0x23,
-    0x04, 0x67, 0x30, 0x65, 0x80, 0x14, 0x9d, 0x6d, 0x20, 0x24, 0x49, 0x01,
-    0x3f, 0x2b, 0xcb, 0x78, 0xb5, 0x19, 0xbc, 0x7e, 0x24, 0xc9, 0xdb, 0xfb,
-    0x36, 0x7c, 0xa1, 0x42, 0xa4, 0x40, 0x30, 0x3e, 0x31, 0x0b, 0x30, 0x09,
-    0x06, 0x03, 0x55, 0x04, 0x06, 0x13, 0x02, 0x4e, 0x4c, 0x31, 0x11, 0x30,
-    0x0f, 0x06, 0x03, 0x55, 0x04, 0x0a, 0x13, 0x08, 0x50, 0x6f, 0x6c, 0x61,
-    0x72, 0x53, 0x53, 0x4c, 0x31, 0x1c, 0x30, 0x1a, 0x06, 0x03, 0x55, 0x04,
-    0x03, 0x13, 0x13, 0x50, 0x6f, 0x6c, 0x61, 0x72, 0x73, 0x73, 0x6c, 0x20,
-    0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x43, 0x20, 0x43, 0x41, 0x82, 0x09,
-    0x00, 0xc1, 0x43, 0xe2, 0x7e, 0x62, 0x43, 0xcc, 0xe8, 0x30, 0x0c, 0x06,
-    0x03, 0x55, 0x1d, 0x13, 0x04, 0x05, 0x30, 0x03, 0x01, 0x01, 0xff, 0x30,
-    0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04, 0x03, 0x02, 0x03,
-    0x69, 0x00, 0x30, 0x66, 0x02, 0x31, 0x00, 0xc3, 0xb4, 0x62, 0x73, 0x56,
-    0x28, 0x95, 0x00, 0x7d, 0x78, 0x12, 0x26, 0xd2, 0x71, 0x7b, 0x19, 0xf8,
-    0x8a, 0x98, 0x3e, 0x92, 0xfe, 0x33, 0x9e, 0xe4, 0x79, 0xd2, 0xfe, 0x7a,
-    0xb7, 0x87, 0x74, 0x3c, 0x2b, 0xb8, 0xd7, 0x69, 0x94, 0x0b, 0xa3, 0x67,
-    0x77, 0xb8, 0xb3, 0xbe, 0xd1, 0x36, 0x32, 0x02, 0x31, 0x00, 0xfd, 0x67,
-    0x9c, 0x94, 0x23, 0x67, 0xc0, 0x56, 0xba, 0x4b, 0x33, 0x15, 0x00, 0xc6,
-    0xe3, 0xcc, 0x31, 0x08, 0x2c, 0x9c, 0x8b, 0xda, 0xa9, 0x75, 0x23, 0x2f,
-    0xb8, 0x28, 0xe7, 0xf2, 0x9c, 0x14, 0x3a, 0x40, 0x01, 0x5c, 0xaf, 0x0c,
-    0xb2, 0xcf, 0x74, 0x7f, 0x30, 0x9f, 0x08, 0x43, 0xad, 0x20,
-};
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-enum exit_codes
-{
-    exit_ok = 0,
-    ctr_drbg_seed_failed,
-    ssl_config_defaults_failed,
-    ssl_setup_failed,
-    hostname_failed,
-    socket_failed,
-    connect_failed,
-    x509_crt_parse_failed,
-    ssl_handshake_failed,
-    ssl_write_failed,
-};
-
-
-int main( void )
-{
-    int ret = exit_ok;
-    mbedtls_net_context server_fd;
-    struct sockaddr_in addr;
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt ca;
-#endif
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-    /*
-     * 0. Initialize and setup stuff
-     */
-    mbedtls_net_init( &server_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_init( &ca );
-#endif
-
-    mbedtls_entropy_init( &entropy );
-    if( mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                       (const unsigned char *) pers, strlen( pers ) ) != 0 )
-    {
-        ret = ctr_drbg_seed_failed;
-        goto exit;
-    }
-
-    if( mbedtls_ssl_config_defaults( &conf,
-                MBEDTLS_SSL_IS_CLIENT,
-                MBEDTLS_SSL_TRANSPORT_STREAM,
-                MBEDTLS_SSL_PRESET_DEFAULT ) != 0 )
-    {
-        ret = ssl_config_defaults_failed;
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-    mbedtls_ssl_conf_psk( &conf, psk, sizeof( psk ),
-                (const unsigned char *) psk_id, sizeof( psk_id ) - 1 );
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( mbedtls_x509_crt_parse_der( &ca, ca_cert, sizeof( ca_cert ) ) != 0 )
-    {
-        ret = x509_crt_parse_failed;
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_ca_chain( &conf, &ca, NULL );
-    mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_REQUIRED );
-#endif
-
-    if( mbedtls_ssl_setup( &ssl, &conf ) != 0 )
-    {
-        ret = ssl_setup_failed;
-        goto exit;
-    }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( mbedtls_ssl_set_hostname( &ssl, HOSTNAME ) != 0 )
-    {
-        ret = hostname_failed;
-        goto exit;
-    }
-#endif
-
-    /*
-     * 1. Start the connection
-     */
-    memset( &addr, 0, sizeof( addr ) );
-    addr.sin_family = AF_INET;
-
-    ret = 1; /* for endianness detection */
-    addr.sin_port = *((char *) &ret) == ret ? PORT_LE : PORT_BE;
-    addr.sin_addr.s_addr = *((char *) &ret) == ret ? ADDR_LE : ADDR_BE;
-    ret = 0;
-
-    if( ( server_fd.fd = socket( AF_INET, SOCK_STREAM, 0 ) ) < 0 )
-    {
-        ret = socket_failed;
-        goto exit;
-    }
-
-    if( connect( server_fd.fd,
-                (const struct sockaddr *) &addr, sizeof( addr ) ) < 0 )
-    {
-        ret = connect_failed;
-        goto exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
-
-    if( mbedtls_ssl_handshake( &ssl ) != 0 )
-    {
-        ret = ssl_handshake_failed;
-        goto exit;
-    }
-
-    /*
-     * 2. Write the GET request and close the connection
-     */
-    if( mbedtls_ssl_write( &ssl, (const unsigned char *) GET_REQUEST,
-                         sizeof( GET_REQUEST ) - 1 ) <= 0 )
-    {
-        ret = ssl_write_failed;
-        goto exit;
-    }
-
-    mbedtls_ssl_close_notify( &ssl );
-
-exit:
-    mbedtls_net_free( &server_fd );
-
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_free( &ca );
-#endif
-
-    mbedtls_exit( ret );
-}
-#endif
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c
deleted file mode 100644
index 61a849c..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_client1.c
+++ /dev/null
@@ -1,318 +0,0 @@
-/*
- *  SSL client demonstration program
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_time            time
-#define mbedtls_time_t          time_t
-#define mbedtls_fprintf         fprintf
-#define mbedtls_printf          printf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif /* MBEDTLS_PLATFORM_C */
-
-#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) ||  \
-    !defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_CLI_C) || \
-    !defined(MBEDTLS_NET_C) || !defined(MBEDTLS_RSA_C) ||         \
-    !defined(MBEDTLS_CERTS_C) || !defined(MBEDTLS_PEM_PARSE_C) || \
-    !defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_X509_CRT_PARSE_C)
-int main( void )
-{
-    mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
-           "MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_CLI_C and/or "
-           "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
-           "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C "
-           "not defined.\n");
-    mbedtls_exit( 0 );
-}
-#else
-
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/debug.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/error.h"
-#include "mbedtls/certs.h"
-
-#include <string.h>
-
-#define SERVER_PORT "4433"
-#define SERVER_NAME "localhost"
-#define GET_REQUEST "GET / HTTP/1.0\r\n\r\n"
-
-#define DEBUG_LEVEL 1
-
-
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
-    fflush(  (FILE *) ctx  );
-}
-
-int main( void )
-{
-    int ret = 1, len;
-    int exit_code = MBEDTLS_EXIT_FAILURE;
-    mbedtls_net_context server_fd;
-    uint32_t flags;
-    unsigned char buf[1024];
-    const char *pers = "ssl_client1";
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt cacert;
-
-#if defined(MBEDTLS_DEBUG_C)
-    mbedtls_debug_set_threshold( DEBUG_LEVEL );
-#endif
-
-    /*
-     * 0. Initialize the RNG and the session data
-     */
-    mbedtls_net_init( &server_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    mbedtls_x509_crt_init( &cacert );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-    mbedtls_printf( "\n  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    mbedtls_entropy_init( &entropy );
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 0. Initialize certificates
-     */
-    mbedtls_printf( "  . Loading the CA root certificate ..." );
-    fflush( stdout );
-
-    ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
-                          mbedtls_test_cas_pem_len );
-    if( ret < 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok (%d skipped)\n", ret );
-
-    /*
-     * 1. Start the connection
-     */
-    mbedtls_printf( "  . Connecting to tcp/%s/%s...", SERVER_NAME, SERVER_PORT );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_connect( &server_fd, SERVER_NAME,
-                                         SERVER_PORT, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_connect returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 2. Setup stuff
-     */
-    mbedtls_printf( "  . Setting up the SSL/TLS structure..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_CLIENT,
-                    MBEDTLS_SSL_TRANSPORT_STREAM,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /* OPTIONAL is not optimal for security,
-     * but makes interop easier in this simplified example */
-    mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
-    mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret );
-        goto exit;
-    }
-
-    if( ( ret = mbedtls_ssl_set_hostname( &ssl, SERVER_NAME ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
-
-    /*
-     * 4. Handshake
-     */
-    mbedtls_printf( "  . Performing the SSL/TLS handshake..." );
-    fflush( stdout );
-
-    while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret );
-            goto exit;
-        }
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 5. Verify the server certificate
-     */
-    mbedtls_printf( "  . Verifying peer X.509 certificate..." );
-
-    /* In real life, we probably want to bail out when ret != 0 */
-    if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
-    {
-        char vrfy_buf[512];
-
-        mbedtls_printf( " failed\n" );
-
-        mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), "  ! ", flags );
-
-        mbedtls_printf( "%s\n", vrfy_buf );
-    }
-    else
-        mbedtls_printf( " ok\n" );
-
-    /*
-     * 3. Write the GET request
-     */
-    mbedtls_printf( "  > Write to server:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, GET_REQUEST );
-
-    while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-
-    len = ret;
-    mbedtls_printf( " %d bytes written\n\n%s", len, (char *) buf );
-
-    /*
-     * 7. Read the HTTP response
-     */
-    mbedtls_printf( "  < Read from server:" );
-    fflush( stdout );
-
-    do
-    {
-        len = sizeof( buf ) - 1;
-        memset( buf, 0, sizeof( buf ) );
-        ret = mbedtls_ssl_read( &ssl, buf, len );
-
-        if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
-            continue;
-
-        if( ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY )
-            break;
-
-        if( ret < 0 )
-        {
-            mbedtls_printf( "failed\n  ! mbedtls_ssl_read returned %d\n\n", ret );
-            break;
-        }
-
-        if( ret == 0 )
-        {
-            mbedtls_printf( "\n\nEOF\n\n" );
-            break;
-        }
-
-        len = ret;
-        mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
-    }
-    while( 1 );
-
-    mbedtls_ssl_close_notify( &ssl );
-
-    exit_code = MBEDTLS_EXIT_SUCCESS;
-
-exit:
-
-#ifdef MBEDTLS_ERROR_C
-    if( exit_code != MBEDTLS_EXIT_SUCCESS )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &server_fd );
-
-    mbedtls_x509_crt_free( &cacert );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    mbedtls_exit( exit_code );
-}
-#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
-          MBEDTLS_SSL_CLI_C && MBEDTLS_NET_C && MBEDTLS_RSA_C &&
-          MBEDTLS_CERTS_C && MBEDTLS_PEM_PARSE_C && MBEDTLS_CTR_DRBG_C &&
-          MBEDTLS_X509_CRT_PARSE_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_client2.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_client2.c
deleted file mode 100644
index 3937981..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_client2.c
+++ /dev/null
@@ -1,3081 +0,0 @@
-/*
- *  SSL client with certificate authentication
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#include "ssl_test_lib.h"
-
-#if defined(MBEDTLS_SSL_TEST_IMPOSSIBLE)
-int main( void )
-{
-    mbedtls_printf( MBEDTLS_SSL_TEST_IMPOSSIBLE );
-    mbedtls_exit( 0 );
-}
-#elif !defined(MBEDTLS_SSL_CLI_C)
-int main( void )
-{
-    mbedtls_printf( "MBEDTLS_SSL_CLI_C not defined.\n" );
-    mbedtls_exit( 0 );
-}
-#else /* !MBEDTLS_SSL_TEST_IMPOSSIBLE && MBEDTLS_SSL_CLI_C */
-
-/* Size of memory to be allocated for the heap, when using the library's memory
- * management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */
-#define MEMORY_HEAP_SIZE      120000
-
-#define MAX_REQUEST_SIZE      20000
-#define MAX_REQUEST_SIZE_STR "20000"
-
-#define DFL_SERVER_NAME         "localhost"
-#define DFL_SERVER_ADDR         NULL
-#define DFL_SERVER_PORT         "4433"
-#define DFL_REQUEST_PAGE        "/"
-#define DFL_REQUEST_SIZE        -1
-#define DFL_DEBUG_LEVEL         0
-#define DFL_CONTEXT_CRT_CB      0
-#define DFL_NBIO                0
-#define DFL_EVENT               0
-#define DFL_READ_TIMEOUT        0
-#define DFL_MAX_RESEND          0
-#define DFL_CA_FILE             ""
-#define DFL_CA_PATH             ""
-#define DFL_CRT_FILE            ""
-#define DFL_KEY_FILE            ""
-#define DFL_KEY_OPAQUE          0
-#define DFL_KEY_PWD             ""
-#define DFL_PSK                 ""
-#define DFL_PSK_OPAQUE          0
-#define DFL_PSK_IDENTITY        "Client_identity"
-#define DFL_ECJPAKE_PW          NULL
-#define DFL_EC_MAX_OPS          -1
-#define DFL_FORCE_CIPHER        0
-#define DFL_RENEGOTIATION       MBEDTLS_SSL_RENEGOTIATION_DISABLED
-#define DFL_ALLOW_LEGACY        -2
-#define DFL_RENEGOTIATE         0
-#define DFL_EXCHANGES           1
-#define DFL_MIN_VERSION         -1
-#define DFL_MAX_VERSION         -1
-#define DFL_ARC4                -1
-#define DFL_SHA1                -1
-#define DFL_AUTH_MODE           -1
-#define DFL_MFL_CODE            MBEDTLS_SSL_MAX_FRAG_LEN_NONE
-#define DFL_TRUNC_HMAC          -1
-#define DFL_RECSPLIT            -1
-#define DFL_DHMLEN              -1
-#define DFL_RECONNECT           0
-#define DFL_RECO_DELAY          0
-#define DFL_RECO_MODE           1
-#define DFL_CID_ENABLED         0
-#define DFL_CID_VALUE           ""
-#define DFL_CID_ENABLED_RENEGO  -1
-#define DFL_CID_VALUE_RENEGO    NULL
-#define DFL_RECONNECT_HARD      0
-#define DFL_TICKETS             MBEDTLS_SSL_SESSION_TICKETS_ENABLED
-#define DFL_ALPN_STRING         NULL
-#define DFL_CURVES              NULL
-#define DFL_TRANSPORT           MBEDTLS_SSL_TRANSPORT_STREAM
-#define DFL_HS_TO_MIN           0
-#define DFL_HS_TO_MAX           0
-#define DFL_DTLS_MTU            -1
-#define DFL_DGRAM_PACKING        1
-#define DFL_FALLBACK            -1
-#define DFL_EXTENDED_MS         -1
-#define DFL_ETM                 -1
-#define DFL_SERIALIZE           0
-#define DFL_CONTEXT_FILE        ""
-#define DFL_EXTENDED_MS_ENFORCE -1
-#define DFL_CA_CALLBACK         0
-#define DFL_EAP_TLS             0
-#define DFL_REPRODUCIBLE        0
-#define DFL_NSS_KEYLOG          0
-#define DFL_NSS_KEYLOG_FILE     NULL
-#define DFL_SKIP_CLOSE_NOTIFY   0
-#define DFL_QUERY_CONFIG_MODE   0
-#define DFL_USE_SRTP            0
-#define DFL_SRTP_FORCE_PROFILE  0
-#define DFL_SRTP_MKI            ""
-
-#define GET_REQUEST "GET %s HTTP/1.0\r\nExtra-header: "
-#define GET_REQUEST_END "\r\n\r\n"
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#define USAGE_CONTEXT_CRT_CB \
-    "    context_crt_cb=%%d   This determines whether the CRT verification callback is bound\n" \
-    "                        to the SSL configuration of the SSL context.\n" \
-    "                        Possible values:\n"\
-    "                        - 0 (default): Use CRT callback bound to configuration\n" \
-    "                        - 1: Use CRT callback bound to SSL context\n"
-#else
-#define USAGE_CONTEXT_CRT_CB ""
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_FS_IO)
-#define USAGE_IO \
-    "    ca_file=%%s          The single file containing the top-level CA(s) you fully trust\n" \
-    "                        default: \"\" (pre-loaded)\n" \
-    "                        use \"none\" to skip loading any top-level CAs.\n" \
-    "    ca_path=%%s          The path containing the top-level CA(s) you fully trust\n" \
-    "                        default: \"\" (pre-loaded) (overrides ca_file)\n" \
-    "                        use \"none\" to skip loading any top-level CAs.\n" \
-    "    crt_file=%%s         Your own cert and chain (in bottom to top order, top may be omitted)\n" \
-    "                        default: \"\" (pre-loaded)\n" \
-    "    key_file=%%s         default: \"\" (pre-loaded)\n"\
-    "    key_pwd=%%s          Password for key specified by key_file argument\n"\
-    "                        default: none\n"
-#else
-#define USAGE_IO \
-    "    No file operations available (MBEDTLS_FS_IO not defined)\n"
-#endif /* MBEDTLS_FS_IO */
-#else /* MBEDTLS_X509_CRT_PARSE_C */
-#define USAGE_IO ""
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-#if defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_X509_CRT_PARSE_C)
-#define USAGE_KEY_OPAQUE \
-    "    key_opaque=%%d       Handle your private key as if it were opaque\n" \
-    "                        default: 0 (disabled)\n"
-#else
-#define USAGE_KEY_OPAQUE ""
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-#define USAGE_CID \
-    "    cid=%%d             Disable (0) or enable (1) the use of the DTLS Connection ID extension.\n" \
-    "                       default: 0 (disabled)\n"     \
-    "    cid_renego=%%d      Disable (0) or enable (1) the use of the DTLS Connection ID extension during renegotiation.\n" \
-    "                       default: same as 'cid' parameter\n"     \
-    "    cid_val=%%s          The CID to use for incoming messages (in hex, without 0x).\n"  \
-    "                        default: \"\"\n" \
-    "    cid_val_renego=%%s   The CID to use for incoming messages (in hex, without 0x) after renegotiation.\n"  \
-    "                        default: same as 'cid_val' parameter\n"
-#else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-#define USAGE_CID ""
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-#define USAGE_PSK_RAW                                               \
-    "    psk=%%s              default: \"\" (disabled)\n"     \
-    "                          The PSK values are in hex, without 0x.\n" \
-    "    psk_identity=%%s     default: \"Client_identity\"\n"
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-#define USAGE_PSK_SLOT                          \
-    "    psk_opaque=%%d       default: 0 (don't use opaque static PSK)\n"     \
-    "                          Enable this to store the PSK configured through command line\n" \
-    "                          parameter `psk` in a PSA-based key slot.\n" \
-    "                          Note: Currently only supported in conjunction with\n"                  \
-    "                          the use of min_version to force TLS 1.2 and force_ciphersuite \n"      \
-    "                          to force a particular PSK-only ciphersuite.\n"                         \
-    "                          Note: This is to test integration of PSA-based opaque PSKs with\n"     \
-    "                          Mbed TLS only. Production systems are likely to configure Mbed TLS\n"  \
-    "                          with prepopulated key slots instead of importing raw key material.\n"
-#else
-#define USAGE_PSK_SLOT ""
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-#define USAGE_PSK USAGE_PSK_RAW USAGE_PSK_SLOT
-#else
-#define USAGE_PSK ""
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-#define USAGE_CA_CALLBACK                       \
-    "   ca_callback=%%d       default: 0 (disabled)\n"      \
-    "                         Enable this to use the trusted certificate callback function\n"
-#else
-#define USAGE_CA_CALLBACK ""
-#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
-
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-#define USAGE_TICKETS                                       \
-    "    tickets=%%d          default: 1 (enabled)\n"
-#else
-#define USAGE_TICKETS ""
-#endif /* MBEDTLS_SSL_SESSION_TICKETS */
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-#define USAGE_EAP_TLS                                       \
-    "    eap_tls=%%d          default: 0 (disabled)\n"
-#define USAGE_NSS_KEYLOG                                    \
-    "    nss_keylog=%%d          default: 0 (disabled)\n"               \
-    "                             This cannot be used with eap_tls=1\n"
-#define USAGE_NSS_KEYLOG_FILE                               \
-    "    nss_keylog_file=%%s\n"
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-#define USAGE_SRTP \
-    "    use_srtp=%%d         default: 0 (disabled)\n" \
-    "                          This cannot be used with eap_tls=1 or "\
-    "                          nss_keylog=1\n"             \
-    "    srtp_force_profile=%%d  default: 0 (all enabled)\n"   \
-    "                        available profiles:\n"       \
-    "                        1 - SRTP_AES128_CM_HMAC_SHA1_80\n"  \
-    "                        2 - SRTP_AES128_CM_HMAC_SHA1_32\n"  \
-    "                        3 - SRTP_NULL_HMAC_SHA1_80\n"       \
-    "                        4 - SRTP_NULL_HMAC_SHA1_32\n"       \
-    "    mki=%%s              default: \"\" (in hex, without 0x)\n"
-#else /* MBEDTLS_SSL_DTLS_SRTP */
-#define USAGE_SRTP ""
-#endif
-#else /* MBEDTLS_SSL_EXPORT_KEYS */
-#define USAGE_EAP_TLS ""
-#define USAGE_NSS_KEYLOG ""
-#define USAGE_NSS_KEYLOG_FILE ""
-#define USAGE_SRTP ""
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-#define USAGE_TRUNC_HMAC                                    \
-    "    trunc_hmac=%%d       default: library default\n"
-#else
-#define USAGE_TRUNC_HMAC ""
-#endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
-
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-#define USAGE_MAX_FRAG_LEN                                      \
-    "    max_frag_len=%%d     default: 16384 (tls default)\n"   \
-    "                        options: 512, 1024, 2048, 4096\n"
-#else
-#define USAGE_MAX_FRAG_LEN ""
-#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
-
-#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
-#define USAGE_RECSPLIT \
-    "    recsplit=0/1        default: (library default: on)\n"
-#else
-#define USAGE_RECSPLIT
-#endif
-
-#if defined(MBEDTLS_DHM_C)
-#define USAGE_DHMLEN \
-    "    dhmlen=%%d           default: (library default: 1024 bits)\n"
-#else
-#define USAGE_DHMLEN
-#endif
-
-#if defined(MBEDTLS_SSL_ALPN)
-#define USAGE_ALPN \
-    "    alpn=%%s             default: \"\" (disabled)\n"   \
-    "                        example: spdy/1,http/1.1\n"
-#else
-#define USAGE_ALPN ""
-#endif /* MBEDTLS_SSL_ALPN */
-
-#if defined(MBEDTLS_ECP_C)
-#define USAGE_CURVES \
-    "    curves=a,b,c,d      default: \"default\" (library default)\n"  \
-    "                        example: \"secp521r1,brainpoolP512r1\"\n"  \
-    "                        - use \"none\" for empty list\n"           \
-    "                        - see mbedtls_ecp_curve_list()\n"          \
-    "                          for acceptable curve names\n"
-#else
-#define USAGE_CURVES ""
-#endif
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-#define USAGE_DTLS \
-    "    dtls=%%d             default: 0 (TLS)\n"                           \
-    "    hs_timeout=%%d-%%d    default: (library default: 1000-60000)\n"    \
-    "                        range of DTLS handshake timeouts in millisecs\n" \
-    "    mtu=%%d              default: (library default: unlimited)\n"  \
-    "    dgram_packing=%%d    default: 1 (allowed)\n"                   \
-    "                        allow or forbid packing of multiple\n" \
-    "                        records within a single datgram.\n"
-#else
-#define USAGE_DTLS ""
-#endif
-
-#if defined(MBEDTLS_SSL_FALLBACK_SCSV)
-#define USAGE_FALLBACK \
-    "    fallback=0/1        default: (library default: off)\n"
-#else
-#define USAGE_FALLBACK ""
-#endif
-
-#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-#define USAGE_EMS \
-    "    extended_ms=0/1     default: (library default: on)\n"
-#else
-#define USAGE_EMS ""
-#endif
-
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-#define USAGE_ETM \
-    "    etm=0/1             default: (library default: on)\n"
-#else
-#define USAGE_ETM ""
-#endif
-
-#define USAGE_REPRODUCIBLE \
-    "    reproducible=0/1     default: 0 (disabled)\n"
-
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-#define USAGE_RENEGO \
-    "    renegotiation=%%d    default: 0 (disabled)\n"      \
-    "    renegotiate=%%d      default: 0 (disabled)\n"
-#else
-#define USAGE_RENEGO ""
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-#define USAGE_ECJPAKE \
-    "    ecjpake_pw=%%s       default: none (disabled)\n"
-#else
-#define USAGE_ECJPAKE ""
-#endif
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-#define USAGE_ECRESTART \
-    "    ec_max_ops=%%s       default: library default (restart disabled)\n"
-#else
-#define USAGE_ECRESTART ""
-#endif
-
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-#define USAGE_SERIALIZATION \
-    "    serialize=%%d        default: 0 (do not serialize/deserialize)\n"     \
-    "                        options: 1 (serialize)\n"                         \
-    "                                 2 (serialize with re-initialization)\n"  \
-    "    context_file=%%s     The file path to write a serialized connection\n"\
-    "                        in the form of base64 code (serialize option\n"   \
-    "                        must be set)\n"                                   \
-    "                         default: \"\" (do nothing)\n"                    \
-    "                         option: a file path\n"
-#else
-#define USAGE_SERIALIZATION ""
-#endif
-
-/* USAGE is arbitrarily split to stay under the portable string literal
- * length limit: 4095 bytes in C99. */
-#define USAGE1 \
-    "\n usage: ssl_client2 param=<>...\n"                   \
-    "\n acceptable parameters:\n"                           \
-    "    server_name=%%s      default: localhost\n"         \
-    "    server_addr=%%s      default: given by name\n"     \
-    "    server_port=%%d      default: 4433\n"              \
-    "    request_page=%%s     default: \".\"\n"             \
-    "    request_size=%%d     default: about 34 (basic request)\n"           \
-    "                        (minimum: 0, max: " MAX_REQUEST_SIZE_STR ")\n"  \
-    "                        If 0, in the first exchange only an empty\n"    \
-    "                        application data message is sent followed by\n" \
-    "                        a second non-empty message before attempting\n" \
-    "                        to read a response from the server\n"           \
-    "    debug_level=%%d      default: 0 (disabled)\n"             \
-    "    nbio=%%d             default: 0 (blocking I/O)\n"         \
-    "                        options: 1 (non-blocking), 2 (added delays)\n"   \
-    "    event=%%d            default: 0 (loop)\n"                            \
-    "                        options: 1 (level-triggered, implies nbio=1),\n" \
-    "    read_timeout=%%d     default: 0 ms (no timeout)\n"        \
-    "    max_resend=%%d       default: 0 (no resend on timeout)\n" \
-    "    skip_close_notify=%%d default: 0 (send close_notify)\n" \
-    "\n"                                                    \
-    USAGE_DTLS                                              \
-    USAGE_CID                                               \
-    USAGE_SRTP                                              \
-    "\n"
-#define USAGE2 \
-    "    auth_mode=%%s        default: (library default: none)\n" \
-    "                        options: none, optional, required\n" \
-    USAGE_IO                                                \
-    USAGE_KEY_OPAQUE                                        \
-    USAGE_CA_CALLBACK                                       \
-    "\n"                                                    \
-    USAGE_PSK                                               \
-    USAGE_ECJPAKE                                           \
-    USAGE_ECRESTART                                         \
-    "\n"
-#define USAGE3 \
-    "    allow_legacy=%%d     default: (library default: no)\n"   \
-    USAGE_RENEGO                                            \
-    "    exchanges=%%d        default: 1\n"                 \
-    "    reconnect=%%d        number of reconnections using session resumption\n" \
-    "                        default: 0 (disabled)\n"      \
-    "    reco_delay=%%d       default: 0 seconds\n"         \
-    "    reco_mode=%%d        0: copy session, 1: serialize session\n" \
-    "                        default: 1\n"      \
-    "    reconnect_hard=%%d   default: 0 (disabled)\n"      \
-    USAGE_TICKETS                                           \
-    USAGE_EAP_TLS                                           \
-    USAGE_MAX_FRAG_LEN                                      \
-    USAGE_TRUNC_HMAC                                        \
-    USAGE_CONTEXT_CRT_CB                                    \
-    USAGE_ALPN                                              \
-    USAGE_FALLBACK                                          \
-    USAGE_EMS                                               \
-    USAGE_ETM                                               \
-    USAGE_REPRODUCIBLE                                      \
-    USAGE_CURVES                                            \
-    USAGE_RECSPLIT                                          \
-    USAGE_DHMLEN                                            \
-    "\n"
-#define USAGE4 \
-    "    arc4=%%d             default: (library default: 0)\n" \
-    "    allow_sha1=%%d       default: 0\n"                             \
-    "    min_version=%%s      default: (library default: tls1)\n"       \
-    "    max_version=%%s      default: (library default: tls1_2)\n"     \
-    "    force_version=%%s    default: \"\" (none)\n"       \
-    "                        options: ssl3, tls1, tls1_1, tls1_2, dtls1, dtls1_2\n" \
-    "\n"                                                    \
-    "    force_ciphersuite=<name>    default: all enabled\n"\
-    "    query_config=<name>         return 0 if the specified\n"       \
-    "                                configuration macro is defined and 1\n"  \
-    "                                otherwise. The expansion of the macro\n" \
-    "                                is printed if it is defined\n"     \
-    USAGE_SERIALIZATION                                     \
-    " acceptable ciphersuite names:\n"
-
-#define ALPN_LIST_SIZE  10
-#define CURVE_LIST_SIZE 20
-
-
-/*
- * global options
- */
-struct options
-{
-    const char *server_name;    /* hostname of the server (client only)     */
-    const char *server_addr;    /* address of the server (client only)      */
-    const char *server_port;    /* port on which the ssl service runs       */
-    int debug_level;            /* level of debugging                       */
-    int nbio;                   /* should I/O be blocking?                  */
-    int event;                  /* loop or event-driven IO? level or edge triggered? */
-    uint32_t read_timeout;      /* timeout on mbedtls_ssl_read() in milliseconds     */
-    int max_resend;             /* DTLS times to resend on read timeout     */
-    const char *request_page;   /* page on server to request                */
-    int request_size;           /* pad request with header to requested size */
-    const char *ca_file;        /* the file with the CA certificate(s)      */
-    const char *ca_path;        /* the path with the CA certificate(s) reside */
-    const char *crt_file;       /* the file with the client certificate     */
-    const char *key_file;       /* the file with the client key             */
-    int key_opaque;             /* handle private key as if it were opaque  */
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    int psk_opaque;
-#endif
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    int ca_callback;            /* Use callback for trusted certificate list */
-#endif
-    const char *key_pwd;        /* the password for the client key          */
-    const char *psk;            /* the pre-shared key                       */
-    const char *psk_identity;   /* the pre-shared key identity              */
-    const char *ecjpake_pw;     /* the EC J-PAKE password                   */
-    int ec_max_ops;             /* EC consecutive operations limit          */
-    int force_ciphersuite[2];   /* protocol/ciphersuite to use, or all      */
-    int renegotiation;          /* enable / disable renegotiation           */
-    int allow_legacy;           /* allow legacy renegotiation               */
-    int renegotiate;            /* attempt renegotiation?                   */
-    int renego_delay;           /* delay before enforcing renegotiation     */
-    int exchanges;              /* number of data exchanges                 */
-    int min_version;            /* minimum protocol version accepted        */
-    int max_version;            /* maximum protocol version accepted        */
-    int arc4;                   /* flag for arc4 suites support             */
-    int allow_sha1;             /* flag for SHA-1 support                   */
-    int auth_mode;              /* verify mode for connection               */
-    unsigned char mfl_code;     /* code for maximum fragment length         */
-    int trunc_hmac;             /* negotiate truncated hmac or not          */
-    int recsplit;               /* enable record splitting?                 */
-    int dhmlen;                 /* minimum DHM params len in bits           */
-    int reconnect;              /* attempt to resume session                */
-    int reco_delay;             /* delay in seconds before resuming session */
-    int reco_mode;              /* how to keep the session around           */
-    int reconnect_hard;         /* unexpectedly reconnect from the same port */
-    int tickets;                /* enable / disable session tickets         */
-    const char *curves;         /* list of supported elliptic curves        */
-    const char *alpn_string;    /* ALPN supported protocols                 */
-    int transport;              /* TLS or DTLS?                             */
-    uint32_t hs_to_min;         /* Initial value of DTLS handshake timer    */
-    uint32_t hs_to_max;         /* Max value of DTLS handshake timer        */
-    int dtls_mtu;               /* UDP Maximum tranport unit for DTLS       */
-    int fallback;               /* is this a fallback connection?           */
-    int dgram_packing;          /* allow/forbid datagram packing            */
-    int extended_ms;            /* negotiate extended master secret?        */
-    int etm;                    /* negotiate encrypt then mac?              */
-    int context_crt_cb;         /* use context-specific CRT verify callback */
-    int eap_tls;                /* derive EAP-TLS keying material?          */
-    int nss_keylog;             /* export NSS key log material              */
-    const char *nss_keylog_file; /* NSS key log file                        */
-    int cid_enabled;            /* whether to use the CID extension or not  */
-    int cid_enabled_renego;     /* whether to use the CID extension or not
-                                 * during renegotiation                     */
-    const char *cid_val;        /* the CID to use for incoming messages     */
-    int serialize;              /* serialize/deserialize connection         */
-    const char *context_file;   /* the file to write a serialized connection
-                                 * in the form of base64 code (serialize
-                                 * option must be set)                      */
-    const char *cid_val_renego; /* the CID to use for incoming messages
-                                 * after renegotiation                      */
-    int reproducible;           /* make communication reproducible          */
-    int skip_close_notify;      /* skip sending the close_notify alert      */
-    int query_config_mode;      /* whether to read config                   */
-    int use_srtp;               /* Support SRTP                             */
-    int force_srtp_profile;     /* SRTP protection profile to use or all    */
-    const char *mki;            /* The dtls mki value to use                */
-} opt;
-
-#include "ssl_test_common_source.c"
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-static unsigned char peer_crt_info[1024];
-
-/*
- * Enabled if debug_level > 1 in code below
- */
-static int my_verify( void *data, mbedtls_x509_crt *crt,
-                      int depth, uint32_t *flags )
-{
-    char buf[1024];
-    ((void) data);
-
-    mbedtls_x509_crt_info( buf, sizeof( buf ) - 1, "", crt );
-    if( depth == 0 )
-        memcpy( peer_crt_info, buf, sizeof( buf ) );
-
-    if( opt.debug_level == 0 )
-        return( 0 );
-
-    mbedtls_printf( "\nVerify requested for (Depth %d):\n", depth );
-    mbedtls_printf( "%s", buf );
-
-    if ( ( *flags ) == 0 )
-        mbedtls_printf( "  This certificate has no flags\n" );
-    else
-    {
-        mbedtls_x509_crt_verify_info( buf, sizeof( buf ), "  ! ", *flags );
-        mbedtls_printf( "%s\n", buf );
-    }
-
-    return( 0 );
-}
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-int report_cid_usage( mbedtls_ssl_context *ssl,
-                      const char *additional_description )
-{
-    int ret;
-    unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ];
-    size_t peer_cid_len;
-    int cid_negotiated;
-
-    if( opt.transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-        return( 0 );
-
-    /* Check if the use of a CID has been negotiated,
-     * but don't ask for the CID value and length.
-     *
-     * Note: Here and below, we're demonstrating the various ways
-     *       in which mbedtls_ssl_get_peer_cid() can be called,
-     *       depending on whether or not the length/value of the
-     *       peer's CID is needed.
-     *
-     *       An actual application, however, should use
-     *       just one call to mbedtls_ssl_get_peer_cid(). */
-    ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
-                                    NULL, NULL );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        return( ret );
-    }
-
-    if( cid_negotiated == MBEDTLS_SSL_CID_DISABLED )
-    {
-        if( opt.cid_enabled == MBEDTLS_SSL_CID_ENABLED )
-        {
-            mbedtls_printf( "(%s) Use of Connection ID was rejected by the server.\n",
-                            additional_description );
-        }
-    }
-    else
-    {
-        size_t idx=0;
-        mbedtls_printf( "(%s) Use of Connection ID has been negotiated.\n",
-                        additional_description );
-
-        /* Ask for just the length of the peer's CID. */
-        ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
-                                        NULL, &peer_cid_len );
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            return( ret );
-        }
-
-        /* Ask for just length + value of the peer's CID. */
-        ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
-                                        peer_cid, &peer_cid_len );
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            return( ret );
-        }
-        mbedtls_printf( "(%s) Peer CID (length %u Bytes): ",
-                        additional_description,
-                        (unsigned) peer_cid_len );
-        while( idx < peer_cid_len )
-        {
-            mbedtls_printf( "%02x ", peer_cid[ idx ] );
-            idx++;
-        }
-        mbedtls_printf( "\n" );
-    }
-
-    return( 0 );
-}
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-int main( int argc, char *argv[] )
-{
-    int ret = 0, len, tail_len, i, written, frags, retry_left;
-    int query_config_ret = 0;
-    mbedtls_net_context server_fd;
-    io_ctx_t io_ctx;
-
-    unsigned char buf[MAX_REQUEST_SIZE + 1];
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-    unsigned char psk[MBEDTLS_PSK_MAX_LEN];
-    size_t psk_len = 0;
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    unsigned char cid[MBEDTLS_SSL_CID_IN_LEN_MAX];
-    unsigned char cid_renego[MBEDTLS_SSL_CID_IN_LEN_MAX];
-    size_t cid_len = 0;
-    size_t cid_renego_len = 0;
-#endif
-
-#if defined(MBEDTLS_SSL_ALPN)
-    const char *alpn_list[ALPN_LIST_SIZE];
-#endif
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    unsigned char alloc_buf[MEMORY_HEAP_SIZE];
-#endif
-
-#if defined(MBEDTLS_ECP_C)
-    mbedtls_ecp_group_id curve_list[CURVE_LIST_SIZE];
-    const mbedtls_ecp_curve_info *curve_cur;
-#endif
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-    unsigned char mki[MBEDTLS_TLS_SRTP_MAX_MKI_LENGTH];
-    size_t mki_len=0;
-#endif
-
-    const char *pers = "ssl_client2";
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t slot = 0;
-    psa_algorithm_t alg = 0;
-    psa_key_attributes_t key_attributes;
-    psa_status_t status;
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_profile crt_profile_for_test = mbedtls_x509_crt_profile_default;
-#endif
-    rng_context_t rng;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_ssl_session saved_session;
-    unsigned char *session_data = NULL;
-    size_t session_data_len = 0;
-#if defined(MBEDTLS_TIMING_C)
-    mbedtls_timing_delay_context timer;
-#endif
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    uint32_t flags;
-    mbedtls_x509_crt cacert;
-    mbedtls_x509_crt clicert;
-    mbedtls_pk_context pkey;
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t key_slot = 0; /* invalid key slot */
-#endif
-#endif  /* MBEDTLS_X509_CRT_PARSE_C */
-    char *p, *q;
-    const int *list;
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-    unsigned char *context_buf = NULL;
-    size_t context_buf_len;
-#endif
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-    unsigned char eap_tls_keymaterial[16];
-    unsigned char eap_tls_iv[8];
-    const char* eap_tls_label = "client EAP encryption";
-    eap_tls_keys eap_tls_keying;
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-    /*! master keys and master salt for SRTP generated during handshake */
-    unsigned char dtls_srtp_key_material[MBEDTLS_TLS_SRTP_MAX_KEY_MATERIAL_LENGTH];
-    const char* dtls_srtp_label = "EXTRACTOR-dtls_srtp";
-    dtls_srtp_keys dtls_srtp_keying;
-    const mbedtls_ssl_srtp_profile default_profiles[] = {
-        MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_80,
-        MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_32,
-        MBEDTLS_TLS_SRTP_NULL_HMAC_SHA1_80,
-        MBEDTLS_TLS_SRTP_NULL_HMAC_SHA1_32,
-        MBEDTLS_TLS_SRTP_UNSET
-    };
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
-#endif
-
-#if defined(MBEDTLS_TEST_HOOKS)
-    test_hooks_init( );
-#endif /* MBEDTLS_TEST_HOOKS */
-
-    /*
-     * Make sure memory references are valid.
-     */
-    mbedtls_net_init( &server_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    memset( &saved_session, 0, sizeof( mbedtls_ssl_session ) );
-    rng_init( &rng );
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_init( &cacert );
-    mbedtls_x509_crt_init( &clicert );
-    mbedtls_pk_init( &pkey );
-#endif
-#if defined(MBEDTLS_SSL_ALPN)
-    memset( (void * ) alpn_list, 0, sizeof( alpn_list ) );
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    status = psa_crypto_init();
-    if( status != PSA_SUCCESS )
-    {
-        mbedtls_fprintf( stderr, "Failed to initialize PSA Crypto implementation: %d\n",
-                         (int) status );
-        ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
-        goto exit;
-    }
-#endif  /* MBEDTLS_USE_PSA_CRYPTO */
-#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-    mbedtls_test_enable_insecure_external_rng( );
-#endif  /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
-
-    if( argc == 0 )
-    {
-    usage:
-        if( ret == 0 )
-            ret = 1;
-
-        mbedtls_printf( USAGE1 );
-        mbedtls_printf( USAGE2 );
-        mbedtls_printf( USAGE3 );
-        mbedtls_printf( USAGE4 );
-
-        list = mbedtls_ssl_list_ciphersuites();
-        while( *list )
-        {
-            mbedtls_printf(" %-42s", mbedtls_ssl_get_ciphersuite_name( *list ) );
-            list++;
-            if( !*list )
-                break;
-            mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) );
-            list++;
-        }
-        mbedtls_printf("\n");
-        goto exit;
-    }
-
-    opt.server_name         = DFL_SERVER_NAME;
-    opt.server_addr         = DFL_SERVER_ADDR;
-    opt.server_port         = DFL_SERVER_PORT;
-    opt.debug_level         = DFL_DEBUG_LEVEL;
-    opt.cid_enabled         = DFL_CID_ENABLED;
-    opt.cid_val             = DFL_CID_VALUE;
-    opt.cid_enabled_renego  = DFL_CID_ENABLED_RENEGO;
-    opt.cid_val_renego      = DFL_CID_VALUE_RENEGO;
-    opt.nbio                = DFL_NBIO;
-    opt.event               = DFL_EVENT;
-    opt.context_crt_cb      = DFL_CONTEXT_CRT_CB;
-    opt.read_timeout        = DFL_READ_TIMEOUT;
-    opt.max_resend          = DFL_MAX_RESEND;
-    opt.request_page        = DFL_REQUEST_PAGE;
-    opt.request_size        = DFL_REQUEST_SIZE;
-    opt.ca_file             = DFL_CA_FILE;
-    opt.ca_path             = DFL_CA_PATH;
-    opt.crt_file            = DFL_CRT_FILE;
-    opt.key_file            = DFL_KEY_FILE;
-    opt.key_opaque          = DFL_KEY_OPAQUE;
-    opt.key_pwd             = DFL_KEY_PWD;
-    opt.psk                 = DFL_PSK;
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    opt.psk_opaque          = DFL_PSK_OPAQUE;
-#endif
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    opt.ca_callback         = DFL_CA_CALLBACK;
-#endif
-    opt.psk_identity        = DFL_PSK_IDENTITY;
-    opt.ecjpake_pw          = DFL_ECJPAKE_PW;
-    opt.ec_max_ops          = DFL_EC_MAX_OPS;
-    opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
-    opt.renegotiation       = DFL_RENEGOTIATION;
-    opt.allow_legacy        = DFL_ALLOW_LEGACY;
-    opt.renegotiate         = DFL_RENEGOTIATE;
-    opt.exchanges           = DFL_EXCHANGES;
-    opt.min_version         = DFL_MIN_VERSION;
-    opt.max_version         = DFL_MAX_VERSION;
-    opt.arc4                = DFL_ARC4;
-    opt.allow_sha1          = DFL_SHA1;
-    opt.auth_mode           = DFL_AUTH_MODE;
-    opt.mfl_code            = DFL_MFL_CODE;
-    opt.trunc_hmac          = DFL_TRUNC_HMAC;
-    opt.recsplit            = DFL_RECSPLIT;
-    opt.dhmlen              = DFL_DHMLEN;
-    opt.reconnect           = DFL_RECONNECT;
-    opt.reco_delay          = DFL_RECO_DELAY;
-    opt.reco_mode           = DFL_RECO_MODE;
-    opt.reconnect_hard      = DFL_RECONNECT_HARD;
-    opt.tickets             = DFL_TICKETS;
-    opt.alpn_string         = DFL_ALPN_STRING;
-    opt.curves              = DFL_CURVES;
-    opt.transport           = DFL_TRANSPORT;
-    opt.hs_to_min           = DFL_HS_TO_MIN;
-    opt.hs_to_max           = DFL_HS_TO_MAX;
-    opt.dtls_mtu            = DFL_DTLS_MTU;
-    opt.fallback            = DFL_FALLBACK;
-    opt.extended_ms         = DFL_EXTENDED_MS;
-    opt.etm                 = DFL_ETM;
-    opt.dgram_packing       = DFL_DGRAM_PACKING;
-    opt.serialize           = DFL_SERIALIZE;
-    opt.context_file        = DFL_CONTEXT_FILE;
-    opt.eap_tls             = DFL_EAP_TLS;
-    opt.reproducible        = DFL_REPRODUCIBLE;
-    opt.nss_keylog          = DFL_NSS_KEYLOG;
-    opt.nss_keylog_file     = DFL_NSS_KEYLOG_FILE;
-    opt.skip_close_notify   = DFL_SKIP_CLOSE_NOTIFY;
-    opt.query_config_mode   = DFL_QUERY_CONFIG_MODE;
-    opt.use_srtp            = DFL_USE_SRTP;
-    opt.force_srtp_profile  = DFL_SRTP_FORCE_PROFILE;
-    opt.mki                 = DFL_SRTP_MKI;
-
-    for( i = 1; i < argc; i++ )
-    {
-        p = argv[i];
-        if( ( q = strchr( p, '=' ) ) == NULL )
-            goto usage;
-        *q++ = '\0';
-
-        if( strcmp( p, "server_name" ) == 0 )
-            opt.server_name = q;
-        else if( strcmp( p, "server_addr" ) == 0 )
-            opt.server_addr = q;
-        else if( strcmp( p, "server_port" ) == 0 )
-            opt.server_port = q;
-        else if( strcmp( p, "dtls" ) == 0 )
-        {
-            int t = atoi( q );
-            if( t == 0 )
-                opt.transport = MBEDTLS_SSL_TRANSPORT_STREAM;
-            else if( t == 1 )
-                opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "debug_level" ) == 0 )
-        {
-            opt.debug_level = atoi( q );
-            if( opt.debug_level < 0 || opt.debug_level > 65535 )
-                goto usage;
-        }
-        else if( strcmp( p, "context_crt_cb" ) == 0 )
-        {
-            opt.context_crt_cb = atoi( q );
-            if( opt.context_crt_cb != 0 && opt.context_crt_cb != 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "nbio" ) == 0 )
-        {
-            opt.nbio = atoi( q );
-            if( opt.nbio < 0 || opt.nbio > 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "event" ) == 0 )
-        {
-            opt.event = atoi( q );
-            if( opt.event < 0 || opt.event > 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "read_timeout" ) == 0 )
-            opt.read_timeout = atoi( q );
-        else if( strcmp( p, "max_resend" ) == 0 )
-        {
-            opt.max_resend = atoi( q );
-            if( opt.max_resend < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "request_page" ) == 0 )
-            opt.request_page = q;
-        else if( strcmp( p, "request_size" ) == 0 )
-        {
-            opt.request_size = atoi( q );
-            if( opt.request_size < 0 ||
-                opt.request_size > MAX_REQUEST_SIZE )
-                goto usage;
-        }
-        else if( strcmp( p, "ca_file" ) == 0 )
-            opt.ca_file = q;
-        else if( strcmp( p, "ca_path" ) == 0 )
-            opt.ca_path = q;
-        else if( strcmp( p, "crt_file" ) == 0 )
-            opt.crt_file = q;
-        else if( strcmp( p, "key_file" ) == 0 )
-            opt.key_file = q;
-        else if( strcmp( p, "key_pwd" ) == 0 )
-            opt.key_pwd = q;
-#if defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_X509_CRT_PARSE_C)
-        else if( strcmp( p, "key_opaque" ) == 0 )
-            opt.key_opaque = atoi( q );
-#endif
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-        else if( strcmp( p, "cid" ) == 0 )
-        {
-            opt.cid_enabled = atoi( q );
-            if( opt.cid_enabled != 0 && opt.cid_enabled != 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "cid_renego" ) == 0 )
-        {
-            opt.cid_enabled_renego = atoi( q );
-            if( opt.cid_enabled_renego != 0 && opt.cid_enabled_renego != 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "cid_val" ) == 0 )
-        {
-            opt.cid_val = q;
-        }
-        else if( strcmp( p, "cid_val_renego" ) == 0 )
-        {
-            opt.cid_val_renego = q;
-        }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-        else if( strcmp( p, "psk" ) == 0 )
-            opt.psk = q;
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        else if( strcmp( p, "psk_opaque" ) == 0 )
-            opt.psk_opaque = atoi( q );
-#endif
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-        else if( strcmp( p, "ca_callback" ) == 0)
-            opt.ca_callback = atoi( q );
-#endif
-        else if( strcmp( p, "psk_identity" ) == 0 )
-            opt.psk_identity = q;
-        else if( strcmp( p, "ecjpake_pw" ) == 0 )
-            opt.ecjpake_pw = q;
-        else if( strcmp( p, "ec_max_ops" ) == 0 )
-            opt.ec_max_ops = atoi( q );
-        else if( strcmp( p, "force_ciphersuite" ) == 0 )
-        {
-            opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q );
-
-            if( opt.force_ciphersuite[0] == 0 )
-            {
-                ret = 2;
-                goto usage;
-            }
-            opt.force_ciphersuite[1] = 0;
-        }
-        else if( strcmp( p, "renegotiation" ) == 0 )
-        {
-            opt.renegotiation = (atoi( q )) ?
-                MBEDTLS_SSL_RENEGOTIATION_ENABLED :
-                MBEDTLS_SSL_RENEGOTIATION_DISABLED;
-        }
-        else if( strcmp( p, "allow_legacy" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case -1:
-                    opt.allow_legacy = MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE;
-                    break;
-                case 0:
-                    opt.allow_legacy = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION;
-                    break;
-                case 1:
-                    opt.allow_legacy = MBEDTLS_SSL_LEGACY_ALLOW_RENEGOTIATION;
-                    break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "renegotiate" ) == 0 )
-        {
-            opt.renegotiate = atoi( q );
-            if( opt.renegotiate < 0 || opt.renegotiate > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "exchanges" ) == 0 )
-        {
-            opt.exchanges = atoi( q );
-            if( opt.exchanges < 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "reconnect" ) == 0 )
-        {
-            opt.reconnect = atoi( q );
-            if( opt.reconnect < 0 || opt.reconnect > 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "reco_delay" ) == 0 )
-        {
-            opt.reco_delay = atoi( q );
-            if( opt.reco_delay < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "reco_mode" ) == 0 )
-        {
-            opt.reco_mode = atoi( q );
-            if( opt.reco_mode < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "reconnect_hard" ) == 0 )
-        {
-            opt.reconnect_hard = atoi( q );
-            if( opt.reconnect_hard < 0 || opt.reconnect_hard > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "tickets" ) == 0 )
-        {
-            opt.tickets = atoi( q );
-            if( opt.tickets < 0 || opt.tickets > 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "alpn" ) == 0 )
-        {
-            opt.alpn_string = q;
-        }
-        else if( strcmp( p, "fallback" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0: opt.fallback = MBEDTLS_SSL_IS_NOT_FALLBACK; break;
-                case 1: opt.fallback = MBEDTLS_SSL_IS_FALLBACK; break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "extended_ms" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0:
-                    opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_DISABLED;
-                    break;
-                case 1:
-                    opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED;
-                    break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "curves" ) == 0 )
-            opt.curves = q;
-        else if( strcmp( p, "etm" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0: opt.etm = MBEDTLS_SSL_ETM_DISABLED; break;
-                case 1: opt.etm = MBEDTLS_SSL_ETM_ENABLED; break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "min_version" ) == 0 )
-        {
-            if( strcmp( q, "ssl3" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0;
-            else if( strcmp( q, "tls1" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1;
-            else if( strcmp( q, "tls1_1" ) == 0 ||
-                     strcmp( q, "dtls1" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-            else if( strcmp( q, "tls1_2" ) == 0 ||
-                     strcmp( q, "dtls1_2" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "max_version" ) == 0 )
-        {
-            if( strcmp( q, "ssl3" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0;
-            else if( strcmp( q, "tls1" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1;
-            else if( strcmp( q, "tls1_1" ) == 0 ||
-                     strcmp( q, "dtls1" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
-            else if( strcmp( q, "tls1_2" ) == 0 ||
-                     strcmp( q, "dtls1_2" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "arc4" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0:     opt.arc4 = MBEDTLS_SSL_ARC4_DISABLED;   break;
-                case 1:     opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED;    break;
-                default:    goto usage;
-            }
-        }
-        else if( strcmp( p, "allow_sha1" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0:     opt.allow_sha1 = 0;   break;
-                case 1:     opt.allow_sha1 = 1;    break;
-                default:    goto usage;
-            }
-        }
-        else if( strcmp( p, "force_version" ) == 0 )
-        {
-            if( strcmp( q, "ssl3" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0;
-            }
-            else if( strcmp( q, "tls1" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1;
-            }
-            else if( strcmp( q, "tls1_1" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
-            }
-            else if( strcmp( q, "tls1_2" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-            }
-            else if( strcmp( q, "dtls1" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
-                opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
-            }
-            else if( strcmp( q, "dtls1_2" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-                opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
-            }
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "auth_mode" ) == 0 )
-        {
-            if( strcmp( q, "none" ) == 0 )
-                opt.auth_mode = MBEDTLS_SSL_VERIFY_NONE;
-            else if( strcmp( q, "optional" ) == 0 )
-                opt.auth_mode = MBEDTLS_SSL_VERIFY_OPTIONAL;
-            else if( strcmp( q, "required" ) == 0 )
-                opt.auth_mode = MBEDTLS_SSL_VERIFY_REQUIRED;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "max_frag_len" ) == 0 )
-        {
-            if( strcmp( q, "512" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_512;
-            else if( strcmp( q, "1024" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_1024;
-            else if( strcmp( q, "2048" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_2048;
-            else if( strcmp( q, "4096" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_4096;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "trunc_hmac" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_DISABLED; break;
-                case 1: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED; break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "hs_timeout" ) == 0 )
-        {
-            if( ( p = strchr( q, '-' ) ) == NULL )
-                goto usage;
-            *p++ = '\0';
-            opt.hs_to_min = atoi( q );
-            opt.hs_to_max = atoi( p );
-            if( opt.hs_to_min == 0 || opt.hs_to_max < opt.hs_to_min )
-                goto usage;
-        }
-        else if( strcmp( p, "mtu" ) == 0 )
-        {
-            opt.dtls_mtu = atoi( q );
-            if( opt.dtls_mtu < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "dgram_packing" ) == 0 )
-        {
-            opt.dgram_packing = atoi( q );
-            if( opt.dgram_packing != 0 &&
-                opt.dgram_packing != 1 )
-            {
-                goto usage;
-            }
-        }
-        else if( strcmp( p, "recsplit" ) == 0 )
-        {
-            opt.recsplit = atoi( q );
-            if( opt.recsplit < 0 || opt.recsplit > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "dhmlen" ) == 0 )
-        {
-            opt.dhmlen = atoi( q );
-            if( opt.dhmlen < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "query_config" ) == 0 )
-        {
-            opt.query_config_mode = 1;
-            query_config_ret = query_config( q );
-            goto exit;
-        }
-        else if( strcmp( p, "serialize") == 0 )
-        {
-            opt.serialize = atoi( q );
-            if( opt.serialize < 0 || opt.serialize > 2)
-                goto usage;
-        }
-        else if( strcmp( p, "context_file") == 0 )
-        {
-            opt.context_file = q;
-        }
-        else if( strcmp( p, "eap_tls" ) == 0 )
-        {
-            opt.eap_tls = atoi( q );
-            if( opt.eap_tls < 0 || opt.eap_tls > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "reproducible" ) == 0 )
-        {
-            opt.reproducible = 1;
-        }
-        else if( strcmp( p, "nss_keylog" ) == 0 )
-        {
-            opt.nss_keylog = atoi( q );
-            if( opt.nss_keylog < 0 || opt.nss_keylog > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "nss_keylog_file" ) == 0 )
-        {
-            opt.nss_keylog_file = q;
-        }
-        else if( strcmp( p, "skip_close_notify" ) == 0 )
-        {
-            opt.skip_close_notify = atoi( q );
-            if( opt.skip_close_notify < 0 || opt.skip_close_notify > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "use_srtp" ) == 0 )
-        {
-            opt.use_srtp = atoi ( q );
-        }
-        else if( strcmp( p, "srtp_force_profile" ) == 0 )
-        {
-            opt.force_srtp_profile = atoi( q );
-        }
-        else if( strcmp( p, "mki" ) == 0 )
-        {
-            opt.mki = q;
-        }
-        else
-            goto usage;
-    }
-
-    if( opt.nss_keylog != 0 && opt.eap_tls != 0 )
-    {
-        mbedtls_printf( "Error: eap_tls and nss_keylog options cannot be used together.\n" );
-        goto usage;
-    }
-
-    /* Event-driven IO is incompatible with the above custom
-     * receive and send functions, as the polling builds on
-     * refers to the underlying net_context. */
-    if( opt.event == 1 && opt.nbio != 1 )
-    {
-        mbedtls_printf( "Warning: event-driven IO mandates nbio=1 - overwrite\n" );
-        opt.nbio = 1;
-    }
-
-#if defined(MBEDTLS_DEBUG_C)
-    mbedtls_debug_set_threshold( opt.debug_level );
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-    /*
-     * Unhexify the pre-shared key if any is given
-     */
-    if( strlen( opt.psk ) )
-    {
-        if( mbedtls_test_unhexify( psk, sizeof( psk ),
-                                   opt.psk, &psk_len ) != 0 )
-        {
-            mbedtls_printf( "pre-shared key not valid\n" );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( opt.psk_opaque != 0 )
-    {
-        if( opt.psk == NULL )
-        {
-            mbedtls_printf( "psk_opaque set but no psk to be imported specified.\n" );
-            ret = 2;
-            goto usage;
-        }
-
-        if( opt.force_ciphersuite[0] <= 0 )
-        {
-            mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" );
-            ret = 2;
-            goto usage;
-        }
-    }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-    if( opt.force_ciphersuite[0] > 0 )
-    {
-        const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
-        ciphersuite_info =
-            mbedtls_ssl_ciphersuite_from_id( opt.force_ciphersuite[0] );
-
-        if( opt.max_version != -1 &&
-            ciphersuite_info->min_minor_ver > opt.max_version )
-        {
-            mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" );
-            ret = 2;
-            goto usage;
-        }
-        if( opt.min_version != -1 &&
-            ciphersuite_info->max_minor_ver < opt.min_version )
-        {
-            mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" );
-            ret = 2;
-            goto usage;
-        }
-
-        /* If the server selects a version that's not supported by
-         * this suite, then there will be no common ciphersuite... */
-        if( opt.max_version == -1 ||
-            opt.max_version > ciphersuite_info->max_minor_ver )
-        {
-            opt.max_version = ciphersuite_info->max_minor_ver;
-        }
-        if( opt.min_version < ciphersuite_info->min_minor_ver )
-        {
-            opt.min_version = ciphersuite_info->min_minor_ver;
-            /* DTLS starts with TLS 1.1 */
-            if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-                opt.min_version < MBEDTLS_SSL_MINOR_VERSION_2 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-        }
-
-        /* Enable RC4 if needed and not explicitly disabled */
-        if( ciphersuite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
-        {
-            if( opt.arc4 == MBEDTLS_SSL_ARC4_DISABLED )
-            {
-                mbedtls_printf( "forced RC4 ciphersuite with RC4 disabled\n" );
-                ret = 2;
-                goto usage;
-            }
-
-            opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED;
-        }
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        if( opt.psk_opaque != 0 )
-        {
-            /* Ensure that the chosen ciphersuite is PSK-only; we must know
-             * the ciphersuite in advance to set the correct policy for the
-             * PSK key slot. This limitation might go away in the future. */
-            if( ciphersuite_info->key_exchange != MBEDTLS_KEY_EXCHANGE_PSK ||
-                opt.min_version != MBEDTLS_SSL_MINOR_VERSION_3 )
-            {
-                mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" );
-                ret = 2;
-                goto usage;
-            }
-
-            /* Determine KDF algorithm the opaque PSK will be used in. */
-#if defined(MBEDTLS_SHA512_C)
-            if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
-                alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384);
-            else
-#endif /* MBEDTLS_SHA512_C */
-                alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256);
-        }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-    }
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    if( mbedtls_test_unhexify( cid, sizeof( cid ),
-                               opt.cid_val, &cid_len ) != 0 )
-    {
-        mbedtls_printf( "CID not valid\n" );
-        goto exit;
-    }
-
-    /* Keep CID settings for renegotiation unless
-     * specified otherwise. */
-    if( opt.cid_enabled_renego == DFL_CID_ENABLED_RENEGO )
-        opt.cid_enabled_renego = opt.cid_enabled;
-    if( opt.cid_val_renego == DFL_CID_VALUE_RENEGO )
-        opt.cid_val_renego = opt.cid_val;
-
-    if( mbedtls_test_unhexify( cid_renego, sizeof( cid_renego ),
-                               opt.cid_val_renego, &cid_renego_len ) != 0 )
-    {
-        mbedtls_printf( "CID not valid\n" );
-        goto exit;
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_ECP_C)
-    if( opt.curves != NULL )
-    {
-        p = (char *) opt.curves;
-        i = 0;
-
-        if( strcmp( p, "none" ) == 0 )
-        {
-            curve_list[0] = MBEDTLS_ECP_DP_NONE;
-        }
-        else if( strcmp( p, "default" ) != 0 )
-        {
-            /* Leave room for a final NULL in curve list */
-            while( i < CURVE_LIST_SIZE - 1 && *p != '\0' )
-            {
-                q = p;
-
-                /* Terminate the current string */
-                while( *p != ',' && *p != '\0' )
-                    p++;
-                if( *p == ',' )
-                    *p++ = '\0';
-
-                if( ( curve_cur = mbedtls_ecp_curve_info_from_name( q ) ) != NULL )
-                {
-                    curve_list[i++] = curve_cur->grp_id;
-                }
-                else
-                {
-                    mbedtls_printf( "unknown curve %s\n", q );
-                    mbedtls_printf( "supported curves: " );
-                    for( curve_cur = mbedtls_ecp_curve_list();
-                         curve_cur->grp_id != MBEDTLS_ECP_DP_NONE;
-                         curve_cur++ )
-                    {
-                        mbedtls_printf( "%s ", curve_cur->name );
-                    }
-                    mbedtls_printf( "\n" );
-                    goto exit;
-                }
-            }
-
-            mbedtls_printf("Number of curves: %d\n", i );
-
-            if( i == CURVE_LIST_SIZE - 1 && *p != '\0' )
-            {
-                mbedtls_printf( "curves list too long, maximum %d",
-                                CURVE_LIST_SIZE - 1 );
-                goto exit;
-            }
-
-            curve_list[i] = MBEDTLS_ECP_DP_NONE;
-        }
-    }
-#endif /* MBEDTLS_ECP_C */
-
-#if defined(MBEDTLS_SSL_ALPN)
-    if( opt.alpn_string != NULL )
-    {
-        p = (char *) opt.alpn_string;
-        i = 0;
-
-        /* Leave room for a final NULL in alpn_list */
-        while( i < ALPN_LIST_SIZE - 1 && *p != '\0' )
-        {
-            alpn_list[i++] = p;
-
-            /* Terminate the current string and move on to next one */
-            while( *p != ',' && *p != '\0' )
-                p++;
-            if( *p == ',' )
-                *p++ = '\0';
-        }
-    }
-#endif /* MBEDTLS_SSL_ALPN */
-
-    /*
-     * 0. Initialize the RNG and the session data
-     */
-    mbedtls_printf( "\n  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    ret = rng_seed( &rng, opt.reproducible, pers );
-    if( ret != 0 )
-        goto exit;
-    mbedtls_printf( " ok\n" );
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    /*
-     * 1.1. Load the trusted CA
-     */
-    mbedtls_printf( "  . Loading the CA root certificate ..." );
-    fflush( stdout );
-
-    if( strcmp( opt.ca_path, "none" ) == 0 ||
-        strcmp( opt.ca_file, "none" ) == 0 )
-    {
-        ret = 0;
-    }
-    else
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.ca_path ) )
-        ret = mbedtls_x509_crt_parse_path( &cacert, opt.ca_path );
-    else if( strlen( opt.ca_file ) )
-        ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C)
-    {
-#if defined(MBEDTLS_PEM_PARSE_C)
-        for( i = 0; mbedtls_test_cas[i] != NULL; i++ )
-        {
-            ret = mbedtls_x509_crt_parse( &cacert,
-                                  (const unsigned char *) mbedtls_test_cas[i],
-                                  mbedtls_test_cas_len[i] );
-            if( ret != 0 )
-                break;
-        }
-        if( ret == 0 )
-#endif /* MBEDTLS_PEM_PARSE_C */
-        for( i = 0; mbedtls_test_cas_der[i] != NULL; i++ )
-        {
-            ret = mbedtls_x509_crt_parse_der( &cacert,
-                         (const unsigned char *) mbedtls_test_cas_der[i],
-                         mbedtls_test_cas_der_len[i] );
-            if( ret != 0 )
-                break;
-        }
-    }
-#else
-    {
-        ret = 1;
-        mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
-    }
-#endif /* MBEDTLS_CERTS_C */
-    if( ret < 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok (%d skipped)\n", ret );
-
-    /*
-     * 1.2. Load own certificate and private key
-     *
-     * (can be skipped if client authentication is not required)
-     */
-    mbedtls_printf( "  . Loading the client cert. and key..." );
-    fflush( stdout );
-
-    if( strcmp( opt.crt_file, "none" ) == 0 )
-        ret = 0;
-    else
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.crt_file ) )
-        ret = mbedtls_x509_crt_parse_file( &clicert, opt.crt_file );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C)
-        ret = mbedtls_x509_crt_parse( &clicert,
-                (const unsigned char *) mbedtls_test_cli_crt,
-                mbedtls_test_cli_crt_len );
-#else
-    {
-        ret = 1;
-        mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
-    }
-#endif
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-    if( strcmp( opt.key_file, "none" ) == 0 )
-        ret = 0;
-    else
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.key_file ) )
-        ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file, opt.key_pwd );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C)
-        ret = mbedtls_pk_parse_key( &pkey,
-                (const unsigned char *) mbedtls_test_cli_key,
-                mbedtls_test_cli_key_len, NULL, 0 );
-#else
-    {
-        ret = 1;
-        mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
-    }
-#endif
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_pk_parse_key returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( opt.key_opaque != 0 )
-    {
-        if( ( ret = mbedtls_pk_wrap_as_opaque( &pkey, &key_slot,
-                                               PSA_ALG_SHA_256 ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  "
-                            "mbedtls_pk_wrap_as_opaque returned -0x%x\n\n", (unsigned int)  -ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-    mbedtls_printf( " ok (key type: %s)\n", mbedtls_pk_get_name( &pkey ) );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-    /*
-     * 2. Start the connection
-     */
-    if( opt.server_addr == NULL)
-        opt.server_addr = opt.server_name;
-
-    mbedtls_printf( "  . Connecting to %s/%s/%s...",
-            opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? "tcp" : "udp",
-            opt.server_addr, opt.server_port );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_connect( &server_fd,
-                       opt.server_addr, opt.server_port,
-                       opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
-                       MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_connect returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-    if( opt.nbio > 0 )
-        ret = mbedtls_net_set_nonblock( &server_fd );
-    else
-        ret = mbedtls_net_set_block( &server_fd );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! net_set_(non)block() returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 3. Setup stuff
-     */
-    mbedtls_printf( "  . Setting up the SSL/TLS structure..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_CLIENT,
-                    opt.transport,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    /* The default algorithms profile disables SHA-1, but our tests still
-       rely on it heavily. */
-    if( opt.allow_sha1 > 0 )
-    {
-        crt_profile_for_test.allowed_mds |= MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 );
-        mbedtls_ssl_conf_cert_profile( &conf, &crt_profile_for_test );
-        mbedtls_ssl_conf_sig_hashes( &conf, ssl_sig_hashes_for_test );
-    }
-
-    if( opt.context_crt_cb == 0 )
-        mbedtls_ssl_conf_verify( &conf, my_verify, NULL );
-
-    memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    if( opt.cid_enabled == 1 || opt.cid_enabled_renego == 1 )
-    {
-        if( opt.cid_enabled == 1        &&
-            opt.cid_enabled_renego == 1 &&
-            cid_len != cid_renego_len )
-        {
-            mbedtls_printf( "CID length must not change during renegotiation\n" );
-            goto usage;
-        }
-
-        if( opt.cid_enabled == 1 )
-            ret = mbedtls_ssl_conf_cid( &conf, cid_len,
-                                        MBEDTLS_SSL_UNEXPECTED_CID_IGNORE );
-        else
-            ret = mbedtls_ssl_conf_cid( &conf, cid_renego_len,
-                                        MBEDTLS_SSL_UNEXPECTED_CID_IGNORE );
-
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_cid_len returned -%#04x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-    if( opt.auth_mode != DFL_AUTH_MODE )
-        mbedtls_ssl_conf_authmode( &conf, opt.auth_mode );
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX )
-        mbedtls_ssl_conf_handshake_timeout( &conf, opt.hs_to_min,
-                                            opt.hs_to_max );
-
-    if( opt.dgram_packing != DFL_DGRAM_PACKING )
-        mbedtls_ssl_set_datagram_packing( &ssl, opt.dgram_packing );
-#endif /* MBEDTLS_SSL_PROTO_DTLS */
-
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    if( ( ret = mbedtls_ssl_conf_max_frag_len( &conf, opt.mfl_code ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_max_frag_len returned %d\n\n",
-                        ret );
-        goto exit;
-    }
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-    const mbedtls_ssl_srtp_profile forced_profile[] =
-                                { opt.force_srtp_profile, MBEDTLS_TLS_SRTP_UNSET };
-    if( opt.use_srtp == 1 )
-    {
-        if( opt.force_srtp_profile != 0 )
-        {
-            ret = mbedtls_ssl_conf_dtls_srtp_protection_profiles ( &conf, forced_profile );
-        }
-        else
-        {
-            ret = mbedtls_ssl_conf_dtls_srtp_protection_profiles ( &conf, default_profiles );
-        }
-
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! "
-                            "mbedtls_ssl_conf_dtls_srtp_protection_profiles returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-
-    }
-    else if( opt.force_srtp_profile != 0 )
-    {
-        mbedtls_printf( " failed\n  ! must enable use_srtp to force srtp profile\n\n" );
-        goto exit;
-    }
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-
-#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    if( opt.trunc_hmac != DFL_TRUNC_HMAC )
-        mbedtls_ssl_conf_truncated_hmac( &conf, opt.trunc_hmac );
-#endif
-
-#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-    if( opt.extended_ms != DFL_EXTENDED_MS )
-        mbedtls_ssl_conf_extended_master_secret( &conf, opt.extended_ms );
-#endif
-
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    if( opt.etm != DFL_ETM )
-        mbedtls_ssl_conf_encrypt_then_mac( &conf, opt.etm );
-#endif
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-    if( opt.eap_tls != 0 )
-    {
-        mbedtls_ssl_conf_export_keys_ext_cb( &conf, eap_tls_key_derivation,
-                                             &eap_tls_keying );
-    }
-    else if( opt.nss_keylog != 0 )
-    {
-        mbedtls_ssl_conf_export_keys_ext_cb( &conf,
-                                             nss_keylog_export,
-                                             NULL );
-    }
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-    else if( opt.use_srtp != 0 )
-    {
-        mbedtls_ssl_conf_export_keys_ext_cb( &conf, dtls_srtp_key_derivation,
-                                             &dtls_srtp_keying );
-    }
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_SSL_CBC_RECORD_SPLITTING)
-    if( opt.recsplit != DFL_RECSPLIT )
-        mbedtls_ssl_conf_cbc_record_splitting( &conf, opt.recsplit
-                                  ? MBEDTLS_SSL_CBC_RECORD_SPLITTING_ENABLED
-                                  : MBEDTLS_SSL_CBC_RECORD_SPLITTING_DISABLED );
-#endif
-
-#if defined(MBEDTLS_DHM_C)
-    if( opt.dhmlen != DFL_DHMLEN )
-        mbedtls_ssl_conf_dhm_min_bitlen( &conf, opt.dhmlen );
-#endif
-
-#if defined(MBEDTLS_SSL_ALPN)
-    if( opt.alpn_string != NULL )
-        if( ( ret = mbedtls_ssl_conf_alpn_protocols( &conf, alpn_list ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_alpn_protocols returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-#endif
-
-    if (opt.reproducible)
-    {
-#if defined(MBEDTLS_HAVE_TIME)
-#if defined(MBEDTLS_PLATFORM_TIME_ALT)
-        mbedtls_platform_set_time( dummy_constant_time );
-#else
-        fprintf( stderr, "Warning: reproducible option used without constant time\n" );
-#endif
-#endif  /* MBEDTLS_HAVE_TIME */
-    }
-    mbedtls_ssl_conf_rng( &conf, rng_get, &rng );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-
-    mbedtls_ssl_conf_read_timeout( &conf, opt.read_timeout );
-
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    mbedtls_ssl_conf_session_tickets( &conf, opt.tickets );
-#endif
-
-    if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
-        mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
-
-#if defined(MBEDTLS_ARC4_C)
-    if( opt.arc4 != DFL_ARC4 )
-        mbedtls_ssl_conf_arc4_support( &conf, opt.arc4 );
-#endif
-
-    if( opt.allow_legacy != DFL_ALLOW_LEGACY )
-        mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy );
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-    mbedtls_ssl_conf_renegotiation( &conf, opt.renegotiation );
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( strcmp( opt.ca_path, "none" ) != 0 &&
-        strcmp( opt.ca_file, "none" ) != 0 )
-    {
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-        if( opt.ca_callback != 0 )
-            mbedtls_ssl_conf_ca_cb( &conf, ca_callback, &cacert );
-        else
-#endif
-            mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
-    }
-    if( strcmp( opt.crt_file, "none" ) != 0 &&
-        strcmp( opt.key_file, "none" ) != 0 )
-    {
-        if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &clicert, &pkey ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-#endif  /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_ECP_C)
-    if( opt.curves != NULL &&
-        strcmp( opt.curves, "default" ) != 0 )
-    {
-        mbedtls_ssl_conf_curves( &conf, curve_list );
-    }
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( opt.psk_opaque != 0 )
-    {
-        key_attributes = psa_key_attributes_init();
-        psa_set_key_usage_flags( &key_attributes, PSA_KEY_USAGE_DERIVE );
-        psa_set_key_algorithm( &key_attributes, alg );
-        psa_set_key_type( &key_attributes, PSA_KEY_TYPE_DERIVE );
-
-        status = psa_import_key( &key_attributes, psk, psk_len, &slot );
-        if( status != PSA_SUCCESS )
-        {
-            ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
-            goto exit;
-        }
-
-        if( ( ret = mbedtls_ssl_conf_psk_opaque( &conf, slot,
-                                  (const unsigned char *) opt.psk_identity,
-                                  strlen( opt.psk_identity ) ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_psk_opaque returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-    else
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-    if( psk_len > 0 )
-    {
-        ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len,
-                             (const unsigned char *) opt.psk_identity,
-                             strlen( opt.psk_identity ) );
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_psk returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-
-    if( opt.min_version != DFL_MIN_VERSION )
-        mbedtls_ssl_conf_min_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3,
-                                      opt.min_version );
-
-    if( opt.max_version != DFL_MAX_VERSION )
-        mbedtls_ssl_conf_max_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3,
-                                      opt.max_version );
-
-#if defined(MBEDTLS_SSL_FALLBACK_SCSV)
-    if( opt.fallback != DFL_FALLBACK )
-        mbedtls_ssl_conf_fallback( &conf, opt.fallback );
-#endif
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        goto exit;
-    }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( ( ret = mbedtls_ssl_set_hostname( &ssl, opt.server_name ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n",
-                        ret );
-        goto exit;
-    }
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if( opt.ecjpake_pw != DFL_ECJPAKE_PW )
-    {
-        if( ( ret = mbedtls_ssl_set_hs_ecjpake_password( &ssl,
-                        (const unsigned char *) opt.ecjpake_pw,
-                                        strlen( opt.ecjpake_pw ) ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_hs_ecjpake_password returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( opt.context_crt_cb == 1 )
-        mbedtls_ssl_set_verify( &ssl, my_verify, NULL );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-    io_ctx.ssl = &ssl;
-    io_ctx.net = &server_fd;
-    mbedtls_ssl_set_bio( &ssl, &io_ctx, send_cb, recv_cb,
-                         opt.nbio == 0 ? recv_timeout_cb : NULL );
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        if( ( ret = mbedtls_ssl_set_cid( &ssl, opt.cid_enabled,
-                                         cid, cid_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_cid returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( opt.dtls_mtu != DFL_DTLS_MTU )
-        mbedtls_ssl_set_mtu( &ssl, opt.dtls_mtu );
-#endif
-
-#if defined(MBEDTLS_TIMING_C)
-    mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
-                                            mbedtls_timing_get_delay );
-#endif
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-    if( opt.ec_max_ops != DFL_EC_MAX_OPS )
-        mbedtls_ecp_set_max_ops( opt.ec_max_ops );
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-    if( opt.use_srtp != 0 && strlen( opt.mki ) != 0 )
-    {
-        if( mbedtls_test_unhexify( mki, sizeof( mki ),
-                                   opt.mki,&mki_len ) != 0 )
-        {
-            mbedtls_printf( "mki value not valid hex\n" );
-            goto exit;
-        }
-
-        mbedtls_ssl_conf_srtp_mki_value_supported( &conf, MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED );
-        if( ( ret = mbedtls_ssl_dtls_srtp_set_mki_value( &ssl, mki,
-                                                         (uint16_t) strlen( opt.mki ) / 2 ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_dtls_srtp_set_mki_value returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-#endif
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 4. Handshake
-     */
-    mbedtls_printf( "  . Performing the SSL/TLS handshake..." );
-    fflush( stdout );
-
-    while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-            ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
-            ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n",
-                            (unsigned int) -ret );
-            if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
-                mbedtls_printf(
-                    "    Unable to verify the server's certificate. "
-                        "Either it is invalid,\n"
-                    "    or you didn't set ca_file or ca_path "
-                        "to an appropriate value.\n"
-                    "    Alternatively, you may want to use "
-                        "auth_mode=optional for testing purposes.\n" );
-            mbedtls_printf( "\n" );
-            goto exit;
-        }
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-        if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-            continue;
-#endif
-
-        /* For event-driven IO, wait for socket to become available */
-        if( opt.event == 1 /* level triggered IO */ )
-        {
-#if defined(MBEDTLS_TIMING_C)
-            ret = idle( &server_fd, &timer, ret );
-#else
-            ret = idle( &server_fd, ret );
-#endif
-            if( ret != 0 )
-                goto exit;
-        }
-    }
-
-    mbedtls_printf( " ok\n    [ Protocol is %s ]\n    [ Ciphersuite is %s ]\n",
-                    mbedtls_ssl_get_version( &ssl ),
-                    mbedtls_ssl_get_ciphersuite( &ssl ) );
-
-    if( ( ret = mbedtls_ssl_get_record_expansion( &ssl ) ) >= 0 )
-        mbedtls_printf( "    [ Record expansion is %d ]\n", ret );
-    else
-        mbedtls_printf( "    [ Record expansion is unknown (compression) ]\n" );
-
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    mbedtls_printf( "    [ Maximum input fragment length is %u ]\n",
-                    (unsigned int) mbedtls_ssl_get_input_max_frag_len( &ssl ) );
-    mbedtls_printf( "    [ Maximum output fragment length is %u ]\n",
-                    (unsigned int) mbedtls_ssl_get_output_max_frag_len( &ssl ) );
-#endif
-
-#if defined(MBEDTLS_SSL_ALPN)
-    if( opt.alpn_string != NULL )
-    {
-        const char *alp = mbedtls_ssl_get_alpn_protocol( &ssl );
-        mbedtls_printf( "    [ Application Layer Protocol is %s ]\n",
-                alp ? alp : "(none)" );
-    }
-#endif
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-    if( opt.eap_tls != 0  )
-    {
-        size_t j = 0;
-
-        if( ( ret = mbedtls_ssl_tls_prf( eap_tls_keying.tls_prf_type,
-                                         eap_tls_keying.master_secret,
-                                         sizeof( eap_tls_keying.master_secret ),
-                                         eap_tls_label,
-                                         eap_tls_keying.randbytes,
-                                         sizeof( eap_tls_keying.randbytes ),
-                                         eap_tls_keymaterial,
-                                         sizeof( eap_tls_keymaterial ) ) )
-                                         != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-
-        mbedtls_printf( "    EAP-TLS key material is:" );
-        for( j = 0; j < sizeof( eap_tls_keymaterial ); j++ )
-        {
-            if( j % 8 == 0 )
-                mbedtls_printf("\n    ");
-            mbedtls_printf("%02x ", eap_tls_keymaterial[j] );
-        }
-        mbedtls_printf("\n");
-
-        if( ( ret = mbedtls_ssl_tls_prf( eap_tls_keying.tls_prf_type, NULL, 0,
-                                         eap_tls_label,
-                                         eap_tls_keying.randbytes,
-                                         sizeof( eap_tls_keying.randbytes ),
-                                         eap_tls_iv,
-                                         sizeof( eap_tls_iv ) ) ) != 0 )
-         {
-             mbedtls_printf( " failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
-                             (unsigned int) -ret );
-             goto exit;
-         }
-
-        mbedtls_printf( "    EAP-TLS IV is:" );
-        for( j = 0; j < sizeof( eap_tls_iv ); j++ )
-        {
-            if( j % 8 == 0 )
-                mbedtls_printf("\n    ");
-            mbedtls_printf("%02x ", eap_tls_iv[j] );
-        }
-        mbedtls_printf("\n");
-    }
-
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-    else if( opt.use_srtp != 0  )
-    {
-        size_t j = 0;
-        mbedtls_dtls_srtp_info dtls_srtp_negotiation_result;
-        mbedtls_ssl_get_dtls_srtp_negotiation_result( &ssl, &dtls_srtp_negotiation_result );
-
-        if( dtls_srtp_negotiation_result.chosen_dtls_srtp_profile
-                                == MBEDTLS_TLS_SRTP_UNSET )
-        {
-            mbedtls_printf( "    Unable to negotiate "
-                            "the use of DTLS-SRTP\n" );
-        }
-        else
-        {
-            if( ( ret = mbedtls_ssl_tls_prf( dtls_srtp_keying.tls_prf_type,
-                                             dtls_srtp_keying.master_secret,
-                                             sizeof( dtls_srtp_keying.master_secret ),
-                                             dtls_srtp_label,
-                                             dtls_srtp_keying.randbytes,
-                                             sizeof( dtls_srtp_keying.randbytes ),
-                                             dtls_srtp_key_material,
-                                             sizeof( dtls_srtp_key_material ) ) )
-                                             != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-
-            mbedtls_printf( "    DTLS-SRTP key material is:" );
-            for( j = 0; j < sizeof( dtls_srtp_key_material ); j++ )
-            {
-                if( j % 8 == 0 )
-                    mbedtls_printf( "\n    " );
-                mbedtls_printf( "%02x ", dtls_srtp_key_material[j] );
-            }
-            mbedtls_printf( "\n" );
-
-            /* produce a less readable output used to perform automatic checks
-             * - compare client and server output
-             * - interop test with openssl which client produces this kind of output
-             */
-            mbedtls_printf( "    Keying material: " );
-            for( j = 0; j < sizeof( dtls_srtp_key_material ); j++ )
-            {
-                mbedtls_printf( "%02X", dtls_srtp_key_material[j] );
-            }
-            mbedtls_printf( "\n" );
-
-            if ( dtls_srtp_negotiation_result.mki_len > 0 )
-            {
-                mbedtls_printf( "    DTLS-SRTP mki value: " );
-                for( j = 0; j < dtls_srtp_negotiation_result.mki_len; j++ )
-                {
-                    mbedtls_printf( "%02X", dtls_srtp_negotiation_result.mki_value[j] );
-                }
-            }
-            else
-            {
-                mbedtls_printf( "    DTLS-SRTP no mki value negotiated" );
-            }
-            mbedtls_printf( "\n" );
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-    if( opt.reconnect != 0 )
-    {
-        mbedtls_printf("  . Saving session for reuse..." );
-        fflush( stdout );
-
-        if( opt.reco_mode == 1 )
-        {
-            /* free any previously saved data */
-            if( session_data != NULL )
-            {
-                mbedtls_platform_zeroize( session_data, session_data_len );
-                mbedtls_free( session_data );
-                session_data = NULL;
-            }
-
-            /* get size of the buffer needed */
-            mbedtls_ssl_session_save( mbedtls_ssl_get_session_pointer( &ssl ),
-                                      NULL, 0, &session_data_len );
-            session_data = mbedtls_calloc( 1, session_data_len );
-            if( session_data == NULL )
-            {
-                mbedtls_printf( " failed\n  ! alloc %u bytes for session data\n",
-                                (unsigned) session_data_len );
-                ret = MBEDTLS_ERR_SSL_ALLOC_FAILED;
-                goto exit;
-            }
-
-            /* actually save session data */
-            if( ( ret = mbedtls_ssl_session_save( mbedtls_ssl_get_session_pointer( &ssl ),
-                                                  session_data, session_data_len,
-                                                  &session_data_len ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_session_saved returned -0x%04x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-        }
-        else
-        {
-            if( ( ret = mbedtls_ssl_get_session( &ssl, &saved_session ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_get_session returned -0x%x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-        }
-
-        mbedtls_printf( " ok\n" );
-
-        if( opt.reco_mode == 1 )
-        {
-            mbedtls_printf( "    [ Saved %u bytes of session data]\n",
-                            (unsigned) session_data_len );
-        }
-    }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    /*
-     * 5. Verify the server certificate
-     */
-    mbedtls_printf( "  . Verifying peer X.509 certificate..." );
-
-    if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
-    {
-        char vrfy_buf[512];
-
-        mbedtls_printf( " failed\n" );
-
-        mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ),
-                                      "  ! ", flags );
-
-        mbedtls_printf( "%s\n", vrfy_buf );
-    }
-    else
-        mbedtls_printf( " ok\n" );
-
-    mbedtls_printf( "  . Peer certificate information    ...\n" );
-    mbedtls_printf( "%s\n", peer_crt_info );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    ret = report_cid_usage( &ssl, "initial handshake" );
-    if( ret != 0 )
-        goto exit;
-
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        if( ( ret = mbedtls_ssl_set_cid( &ssl, opt.cid_enabled_renego,
-                                         cid_renego,
-                                         cid_renego_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_cid returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( opt.renegotiate )
-    {
-        /*
-         * Perform renegotiation (this must be done when the server is waiting
-         * for input from our side).
-         */
-        mbedtls_printf( "  . Performing renegotiation..." );
-        fflush( stdout );
-        while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 )
-        {
-            if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-                ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
-                ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_renegotiate returned %d\n\n",
-                                ret );
-                goto exit;
-            }
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-            if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-                continue;
-#endif
-
-            /* For event-driven IO, wait for socket to become available */
-            if( opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &server_fd, &timer, ret );
-#else
-                idle( &server_fd, ret );
-#endif
-            }
-
-        }
-        mbedtls_printf( " ok\n" );
-    }
-#endif /* MBEDTLS_SSL_RENEGOTIATION */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    ret = report_cid_usage( &ssl, "after renegotiation" );
-    if( ret != 0 )
-        goto exit;
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-    /*
-     * 6. Write the GET request
-     */
-    retry_left = opt.max_resend;
-send_request:
-    mbedtls_printf( "  > Write to server:" );
-    fflush( stdout );
-
-    len = mbedtls_snprintf( (char *) buf, sizeof( buf ) - 1, GET_REQUEST,
-                            opt.request_page );
-    tail_len = (int) strlen( GET_REQUEST_END );
-
-    /* Add padding to GET request to reach opt.request_size in length */
-    if( opt.request_size != DFL_REQUEST_SIZE &&
-        len + tail_len < opt.request_size )
-    {
-        memset( buf + len, 'A', opt.request_size - len - tail_len );
-        len += opt.request_size - len - tail_len;
-    }
-
-    strncpy( (char *) buf + len, GET_REQUEST_END, sizeof( buf ) - len - 1 );
-    len += tail_len;
-
-    /* Truncate if request size is smaller than the "natural" size */
-    if( opt.request_size != DFL_REQUEST_SIZE &&
-        len > opt.request_size )
-    {
-        len = opt.request_size;
-
-        /* Still end with \r\n unless that's really not possible */
-        if( len >= 2 ) buf[len - 2] = '\r';
-        if( len >= 1 ) buf[len - 1] = '\n';
-    }
-
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM )
-    {
-        written = 0;
-        frags = 0;
-
-        do
-        {
-            while( ( ret = mbedtls_ssl_write( &ssl, buf + written,
-                                              len - written ) ) < 0 )
-            {
-                if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-                    ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
-                    ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-                {
-                    mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned -0x%x\n\n",
-                                    (unsigned int) -ret );
-                    goto exit;
-                }
-
-                /* For event-driven IO, wait for socket to become available */
-                if( opt.event == 1 /* level triggered IO */ )
-                {
-#if defined(MBEDTLS_TIMING_C)
-                    idle( &server_fd, &timer, ret );
-#else
-                    idle( &server_fd, ret );
-#endif
-                }
-            }
-
-            frags++;
-            written += ret;
-        }
-        while( written < len );
-    }
-    else /* Not stream, so datagram */
-    {
-        while( 1 )
-        {
-            ret = mbedtls_ssl_write( &ssl, buf, len );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-            if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-                continue;
-#endif
-
-            if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-                ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-                break;
-
-            /* For event-driven IO, wait for socket to become available */
-            if( opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &server_fd, &timer, ret );
-#else
-                idle( &server_fd, ret );
-#endif
-            }
-        }
-
-        if( ret < 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-
-        frags = 1;
-        written = ret;
-
-        if( written < len )
-        {
-            mbedtls_printf( " warning\n  ! request didn't fit into single datagram and "
-                            "was truncated to size %u", (unsigned) written );
-        }
-    }
-
-    buf[written] = '\0';
-    mbedtls_printf( " %d bytes written in %d fragments\n\n%s\n",
-                    written, frags, (char *) buf );
-
-    /* Send a non-empty request if request_size == 0 */
-    if ( len == 0 )
-    {
-        opt.request_size = DFL_REQUEST_SIZE;
-        goto send_request;
-    }
-
-    /*
-     * 7. Read the HTTP response
-     */
-    mbedtls_printf( "  < Read from server:" );
-    fflush( stdout );
-
-    /*
-     * TLS and DTLS need different reading styles (stream vs datagram)
-     */
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM )
-    {
-        do
-        {
-            len = sizeof( buf ) - 1;
-            memset( buf, 0, sizeof( buf ) );
-            ret = mbedtls_ssl_read( &ssl, buf, len );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-            if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-                continue;
-#endif
-
-            if( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-                ret == MBEDTLS_ERR_SSL_WANT_WRITE )
-            {
-                /* For event-driven IO, wait for socket to become available */
-                if( opt.event == 1 /* level triggered IO */ )
-                {
-#if defined(MBEDTLS_TIMING_C)
-                    idle( &server_fd, &timer, ret );
-#else
-                    idle( &server_fd, ret );
-#endif
-                }
-                continue;
-            }
-
-            if( ret <= 0 )
-            {
-                switch( ret )
-                {
-                    case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                        mbedtls_printf( " connection was closed gracefully\n" );
-                        ret = 0;
-                        goto close_notify;
-
-                    case 0:
-                    case MBEDTLS_ERR_NET_CONN_RESET:
-                        mbedtls_printf( " connection was reset by peer\n" );
-                        ret = 0;
-                        goto reconnect;
-
-                    default:
-                        mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n",
-                                        (unsigned int) -ret );
-                        goto exit;
-                }
-            }
-
-            len = ret;
-            buf[len] = '\0';
-            mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
-
-            /* End of message should be detected according to the syntax of the
-             * application protocol (eg HTTP), just use a dummy test here. */
-            if( ret > 0 && buf[len-1] == '\n' )
-            {
-                ret = 0;
-                break;
-            }
-        }
-        while( 1 );
-    }
-    else /* Not stream, so datagram */
-    {
-        len = sizeof( buf ) - 1;
-        memset( buf, 0, sizeof( buf ) );
-
-        while( 1 )
-        {
-            ret = mbedtls_ssl_read( &ssl, buf, len );
-
-#if defined(MBEDTLS_ECP_RESTARTABLE)
-            if( ret == MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-                continue;
-#endif
-
-            if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-                ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-                break;
-
-            /* For event-driven IO, wait for socket to become available */
-            if( opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &server_fd, &timer, ret );
-#else
-                idle( &server_fd, ret );
-#endif
-            }
-        }
-
-        if( ret <= 0 )
-        {
-            switch( ret )
-            {
-                case MBEDTLS_ERR_SSL_TIMEOUT:
-                    mbedtls_printf( " timeout\n" );
-                    if( retry_left-- > 0 )
-                        goto send_request;
-                    goto exit;
-
-                case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                    mbedtls_printf( " connection was closed gracefully\n" );
-                    ret = 0;
-                    goto close_notify;
-
-                default:
-                    mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret );
-                    goto exit;
-            }
-        }
-
-        len = ret;
-        buf[len] = '\0';
-        mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
-        ret = 0;
-    }
-
-    /*
-     * 7b. Simulate hard reset and reconnect from same port?
-     */
-    if( opt.reconnect_hard != 0 )
-    {
-        opt.reconnect_hard = 0;
-
-        mbedtls_printf( "  . Restarting connection from same port..." );
-        fflush( stdout );
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-        memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-        if( ( ret = mbedtls_ssl_session_reset( &ssl ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_session_reset returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-
-        while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-        {
-            if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-                ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
-                ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-
-            /* For event-driven IO, wait for socket to become available */
-            if( opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &server_fd, &timer, ret );
-#else
-                idle( &server_fd, ret );
-#endif
-            }
-        }
-
-        mbedtls_printf( " ok\n" );
-
-        goto send_request;
-    }
-
-    /*
-     * 7c. Simulate serialize/deserialize and go back to data exchange
-     */
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-    if( opt.serialize != 0 )
-    {
-        size_t buf_len;
-
-        mbedtls_printf( "  . Serializing live connection..." );
-
-        ret = mbedtls_ssl_context_save( &ssl, NULL, 0, &buf_len );
-        if( ret != MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_context_save returned "
-                            "-0x%x\n\n", (unsigned int) -ret );
-
-            goto exit;
-        }
-
-        if( ( context_buf = mbedtls_calloc( 1, buf_len ) ) == NULL )
-        {
-            mbedtls_printf( " failed\n  ! Couldn't allocate buffer for "
-                            "serialized context" );
-
-            goto exit;
-        }
-        context_buf_len = buf_len;
-
-        if( ( ret = mbedtls_ssl_context_save( &ssl, context_buf,
-                                              buf_len, &buf_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_context_save returned "
-                            "-0x%x\n\n", (unsigned int) -ret );
-
-            goto exit;
-        }
-
-        mbedtls_printf( " ok\n" );
-
-        /* Save serialized context to the 'opt.context_file' as a base64 code */
-        if( 0 < strlen( opt.context_file ) )
-        {
-            FILE *b64_file;
-            uint8_t *b64_buf;
-            size_t b64_len;
-
-            mbedtls_printf( "  . Save serialized context to a file... " );
-
-            mbedtls_base64_encode( NULL, 0, &b64_len, context_buf, buf_len );
-
-            if( ( b64_buf = mbedtls_calloc( 1, b64_len ) ) == NULL )
-            {
-                mbedtls_printf( "failed\n  ! Couldn't allocate buffer for "
-                                "the base64 code\n" );
-                goto exit;
-            }
-
-            if( ( ret = mbedtls_base64_encode( b64_buf, b64_len, &b64_len,
-                                               context_buf, buf_len ) ) != 0 )
-            {
-                mbedtls_printf( "failed\n  ! mbedtls_base64_encode returned "
-                            "-0x%x\n", (unsigned int) -ret );
-                mbedtls_free( b64_buf );
-                goto exit;
-            }
-
-            if( ( b64_file = fopen( opt.context_file, "w" ) ) == NULL )
-            {
-                mbedtls_printf( "failed\n  ! Cannot open '%s' for writing.\n",
-                                opt.context_file );
-                mbedtls_free( b64_buf );
-                goto exit;
-            }
-
-            if( b64_len != fwrite( b64_buf, 1, b64_len, b64_file ) )
-            {
-                mbedtls_printf( "failed\n  ! fwrite(%ld bytes) failed\n",
-                                (long) b64_len );
-                mbedtls_free( b64_buf );
-                fclose( b64_file );
-                goto exit;
-            }
-
-            mbedtls_free( b64_buf );
-            fclose( b64_file );
-
-            mbedtls_printf( "ok\n" );
-        }
-
-        if( opt.serialize == 1 )
-        {
-            /* nothing to do here, done by context_save() already */
-            mbedtls_printf( "  . Context has been reset... ok\n" );
-        }
-
-        if( opt.serialize == 2 )
-        {
-            mbedtls_printf( "  . Freeing and reinitializing context..." );
-
-            mbedtls_ssl_free( &ssl );
-
-            mbedtls_ssl_init( &ssl );
-
-            if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned "
-                                "-0x%x\n\n", (unsigned int) -ret );
-                goto exit;
-            }
-
-            if( opt.nbio == 2 )
-                mbedtls_ssl_set_bio( &ssl, &server_fd, delayed_send,
-                                     delayed_recv, NULL );
-            else
-                mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send,
-                            mbedtls_net_recv,
-                            opt.nbio == 0 ? mbedtls_net_recv_timeout : NULL );
-
-#if defined(MBEDTLS_TIMING_C)
-                mbedtls_ssl_set_timer_cb( &ssl, &timer,
-                                          mbedtls_timing_set_delay,
-                                          mbedtls_timing_get_delay );
-#endif /* MBEDTLS_TIMING_C */
-
-            mbedtls_printf( " ok\n" );
-        }
-
-        mbedtls_printf( "  . Deserializing connection..." );
-
-        if( ( ret = mbedtls_ssl_context_load( &ssl, context_buf,
-                                              buf_len ) ) != 0 )
-        {
-            mbedtls_printf( "failed\n  ! mbedtls_ssl_context_load returned "
-                            "-0x%x\n\n", (unsigned int) -ret );
-
-            goto exit;
-        }
-
-        mbedtls_free( context_buf );
-        context_buf = NULL;
-        context_buf_len = 0;
-
-        mbedtls_printf( " ok\n" );
-    }
-#endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */
-
-    /*
-     * 7d. Continue doing data exchanges?
-     */
-    if( --opt.exchanges > 0 )
-        goto send_request;
-
-    /*
-     * 8. Done, cleanly close the connection
-     */
-close_notify:
-    mbedtls_printf( "  . Closing the connection..." );
-    fflush( stdout );
-
-    /*
-     * Most of the time sending a close_notify before closing is the right
-     * thing to do. However, when the server already knows how many messages
-     * are expected and closes the connection by itself, this alert becomes
-     * redundant. Sometimes with DTLS this redundancy becomes a problem by
-     * leading to a race condition where the server might close the connection
-     * before seeing the alert, and since UDP is connection-less when the
-     * alert arrives it will be seen as a new connection, which will fail as
-     * the alert is clearly not a valid ClientHello. This may cause spurious
-     * failures in tests that use DTLS and resumption with ssl_server2 in
-     * ssl-opt.sh, avoided by enabling skip_close_notify client-side.
-     */
-    if( opt.skip_close_notify == 0 )
-    {
-        /* No error checking, the connection might be closed already */
-        do ret = mbedtls_ssl_close_notify( &ssl );
-        while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-        ret = 0;
-    }
-
-    mbedtls_printf( " done\n" );
-
-    /*
-     * 9. Reconnect?
-     */
-reconnect:
-    if( opt.reconnect != 0 )
-    {
-        --opt.reconnect;
-
-        mbedtls_net_free( &server_fd );
-
-#if defined(MBEDTLS_TIMING_C)
-        if( opt.reco_delay > 0 )
-            mbedtls_net_usleep( 1000000 * opt.reco_delay );
-#endif
-
-        mbedtls_printf( "  . Reconnecting with saved session..." );
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-        memset( peer_crt_info, 0, sizeof( peer_crt_info ) );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-        if( ( ret = mbedtls_ssl_session_reset( &ssl ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_session_reset returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-
-        if( opt.reco_mode == 1 )
-        {
-            if( ( ret = mbedtls_ssl_session_load( &saved_session,
-                                                  session_data,
-                                                  session_data_len ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_session_load returned -0x%x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-        }
-
-        if( ( ret = mbedtls_ssl_set_session( &ssl, &saved_session ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_session returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-
-        if( ( ret = mbedtls_net_connect( &server_fd,
-                        opt.server_addr, opt.server_port,
-                        opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
-                        MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_net_connect returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-
-        if( opt.nbio > 0 )
-            ret = mbedtls_net_set_nonblock( &server_fd );
-        else
-            ret = mbedtls_net_set_block( &server_fd );
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! net_set_(non)block() returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-
-        while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-        {
-            if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-                ret != MBEDTLS_ERR_SSL_WANT_WRITE &&
-                ret != MBEDTLS_ERR_SSL_CRYPTO_IN_PROGRESS )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-        }
-
-        mbedtls_printf( " ok\n" );
-
-        goto send_request;
-    }
-
-    /*
-     * Cleanup and exit
-     */
-exit:
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("Last error was: -0x%X - %s\n\n", (unsigned int) -ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &server_fd );
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_free( &clicert );
-    mbedtls_x509_crt_free( &cacert );
-    mbedtls_pk_free( &pkey );
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_destroy_key( key_slot );
-#endif
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) && \
-    defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( opt.psk_opaque != 0 )
-    {
-        /* This is ok even if the slot hasn't been
-         * initialized (we might have jumed here
-         * immediately because of bad cmd line params,
-         * for example). */
-        status = psa_destroy_key( slot );
-        if( ( status != PSA_SUCCESS ) &&
-            ( opt.query_config_mode == DFL_QUERY_CONFIG_MODE ) )
-        {
-            mbedtls_printf( "Failed to destroy key slot %u - error was %d",
-                            (unsigned) slot, (int) status );
-            if( ret == 0 )
-                ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
-        }
-    }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED &&
-          MBEDTLS_USE_PSA_CRYPTO */
-
-    mbedtls_ssl_session_free( &saved_session );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    rng_free( &rng );
-    if( session_data != NULL )
-        mbedtls_platform_zeroize( session_data, session_data_len );
-    mbedtls_free( session_data );
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-    if( context_buf != NULL )
-        mbedtls_platform_zeroize( context_buf, context_buf_len );
-    mbedtls_free( context_buf );
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    mbedtls_psa_crypto_free( );
-#endif
-
-#if defined(MBEDTLS_TEST_HOOKS)
-    if( test_hooks_failure_detected( ) )
-    {
-        if( ret == 0 )
-            ret = 1;
-        mbedtls_printf( "Test hooks detected errors.\n" );
-    }
-    test_hooks_free( );
-#endif /* MBEDTLS_TEST_HOOKS */
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#if defined(MBEDTLS_MEMORY_DEBUG)
-    mbedtls_memory_buffer_alloc_status();
-#endif
-    mbedtls_memory_buffer_alloc_free();
-#endif  /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
-
-#if defined(_WIN32)
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-    {
-        mbedtls_printf( "  + Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-    }
-#endif
-
-    // Shell can not handle large exit numbers -> 1 for errors
-    if( ret < 0 )
-        ret = 1;
-
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-        mbedtls_exit( ret );
-    else
-        mbedtls_exit( query_config_ret );
-}
-#endif /* !MBEDTLS_SSL_TEST_IMPOSSIBLE && MBEDTLS_SSL_CLI_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_context_info.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_context_info.c
deleted file mode 100644
index a204d9e..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_context_info.c
+++ /dev/null
@@ -1,1112 +0,0 @@
-/*
- *  MbedTLS SSL context deserializer from base64 code
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#if !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_ERROR_C) || \
-    !defined(MBEDTLS_SSL_TLS_C)
-int main( void )
-{
-    printf("MBEDTLS_X509_CRT_PARSE_C and/or MBEDTLS_ERROR_C and/or "
-           "MBEDTLS_SSL_TLS_C not defined.\n");
-    return( 0 );
-}
-#else
-
-#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_DEPRECATE)
-#define _CRT_SECURE_NO_DEPRECATE 1
-#endif
-
-#include <stdint.h>
-#include <stdarg.h>
-#include <string.h>
-#include <time.h>
-#include "mbedtls/ssl.h"
-#include "mbedtls/error.h"
-#include "mbedtls/base64.h"
-#include "mbedtls/md.h"
-#include "mbedtls/md_internal.h"
-#include "mbedtls/x509_crt.h"
-#include "mbedtls/ssl_ciphersuites.h"
-
-/*
- * This program version
- */
-#define PROG_NAME "ssl_context_info"
-#define VER_MAJOR 0
-#define VER_MINOR 1
-
-/*
- * Flags copied from the Mbed TLS library.
- */
-#define SESSION_CONFIG_TIME_BIT          ( 1 << 0 )
-#define SESSION_CONFIG_CRT_BIT           ( 1 << 1 )
-#define SESSION_CONFIG_CLIENT_TICKET_BIT ( 1 << 2 )
-#define SESSION_CONFIG_MFL_BIT           ( 1 << 3 )
-#define SESSION_CONFIG_TRUNC_HMAC_BIT    ( 1 << 4 )
-#define SESSION_CONFIG_ETM_BIT           ( 1 << 5 )
-#define SESSION_CONFIG_TICKET_BIT        ( 1 << 6 )
-
-#define CONTEXT_CONFIG_DTLS_CONNECTION_ID_BIT    ( 1 << 0 )
-#define CONTEXT_CONFIG_DTLS_BADMAC_LIMIT_BIT     ( 1 << 1 )
-#define CONTEXT_CONFIG_DTLS_ANTI_REPLAY_BIT      ( 1 << 2 )
-#define CONTEXT_CONFIG_ALPN_BIT                  ( 1 << 3 )
-
-#define TRANSFORM_RANDBYTE_LEN  64
-
-/*
- * Minimum and maximum number of bytes for specific data: context, sessions,
- * certificates, tickets and buffers in the program. The context and session
- * size values have been calculated based on the 'print_deserialized_ssl_context()'
- * and 'print_deserialized_ssl_session()' content.
- */
-#define MIN_CONTEXT_LEN     84
-#define MIN_SESSION_LEN     88
-
-#define MAX_CONTEXT_LEN     875     /* without session data */
-#define MAX_SESSION_LEN     109     /* without certificate and ticket data */
-#define MAX_CERTIFICATE_LEN ( ( 1 << 24 ) - 1 )
-#define MAX_TICKET_LEN      ( ( 1 << 24 ) - 1 )
-
-#define MIN_SERIALIZED_DATA ( MIN_CONTEXT_LEN + MIN_SESSION_LEN )
-#define MAX_SERIALIZED_DATA ( MAX_CONTEXT_LEN + MAX_SESSION_LEN + \
-                              MAX_CERTIFICATE_LEN + MAX_TICKET_LEN )
-
-#define MIN_BASE64_LEN      ( MIN_SERIALIZED_DATA * 4 / 3 )
-#define MAX_BASE64_LEN      ( MAX_SERIALIZED_DATA * 4 / 3 + 3 )
-
-/*
- * A macro that prevents from reading out of the ssl buffer range.
- */
-#define CHECK_SSL_END( LEN )            \
-do                                      \
-{                                       \
-    if( end - ssl < (int)( LEN ) )      \
-    {                                   \
-        printf_err( "%s", buf_ln_err ); \
-        return;                         \
-    }                                   \
-} while( 0 )
-
-/*
- * Global values
- */
-FILE *b64_file = NULL;                  /* file with base64 codes to deserialize */
-char conf_keep_peer_certificate = 1;    /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE from mbedTLS configuration */
-char conf_dtls_proto = 1;               /* MBEDTLS_SSL_PROTO_DTLS from mbedTLS configuration */
-char debug = 0;                         /* flag for debug messages */
-const char alloc_err[] = "Cannot allocate memory\n";
-const char buf_ln_err[] = "Buffer does not have enough data to complete the parsing\n";
-
-/*
- * Basic printing functions
- */
-void print_version( )
-{
-    printf( "%s v%d.%d\n", PROG_NAME, VER_MAJOR, VER_MINOR );
-}
-
-void print_usage( )
-{
-    print_version();
-    printf( "\nThis program is used to deserialize an Mbed TLS SSL session from the base64 code provided\n"
-            "in the text file. The program can deserialize many codes from one file, but they must be\n"
-            "separated, e.g. by a newline.\n\n" );
-    printf(
-        "Usage:\n"
-        "\t-f path            - Path to the file with base64 code\n"
-        "\t-v                 - Show version\n"
-        "\t-h                 - Show this usage\n"
-        "\t-d                 - Print more information\n"
-        "\t--keep-peer-cert=0 - Use this option if you know that the Mbed TLS library\n"
-        "\t                     has been compiled with the MBEDTLS_SSL_KEEP_PEER_CERTIFICATE\n"
-        "\t                     flag. You can also use it if there are some problems with reading\n"
-        "\t                     the information about certificate\n"
-        "\t--dtls-protocol=0  - Use this option if you know that the Mbed TLS library\n"
-        "\t                     has been compiled without the MBEDTLS_SSL_PROTO_DTLS flag\n"
-        "\n"
-    );
-}
-
-void printf_dbg( const char *str, ... )
-{
-    if( debug )
-    {
-        va_list args;
-        va_start( args, str );
-        printf( "debug: " );
-        vprintf( str, args );
-        fflush( stdout );
-        va_end( args );
-    }
-}
-
-void printf_err( const char *str, ... )
-{
-    va_list args;
-    va_start( args, str );
-    fflush( stdout );
-    fprintf( stderr, "ERROR: " );
-    vfprintf( stderr, str, args );
-    fflush( stderr );
-    va_end( args );
-}
-
-/*
- * Exit from the program in case of error
- */
-void error_exit()
-{
-    if( NULL != b64_file )
-    {
-        fclose( b64_file );
-    }
-    exit( -1 );
-}
-
-/*
- * This function takes the input arguments of this program
- */
-void parse_arguments( int argc, char *argv[] )
-{
-    int i = 1;
-
-    if( argc < 2 )
-    {
-        print_usage();
-        error_exit();
-    }
-
-    while( i < argc )
-    {
-        if( strcmp( argv[i], "-d" ) == 0 )
-        {
-            debug = 1;
-        }
-        else if( strcmp( argv[i], "-h" ) == 0 )
-        {
-            print_usage();
-        }
-        else if( strcmp( argv[i], "-v" ) == 0 )
-        {
-            print_version();
-        }
-        else if( strcmp( argv[i], "-f" ) == 0 )
-        {
-            if( ++i >= argc )
-            {
-                printf_err( "File path is empty\n" );
-                error_exit();
-            }
-
-            if( ( b64_file = fopen( argv[i], "r" ) ) == NULL )
-            {
-                printf_err( "Cannot find file \"%s\"\n", argv[i] );
-                error_exit();
-            }
-        }
-        else if( strcmp( argv[i], "--keep-peer-cert=0" ) == 0 )
-        {
-            conf_keep_peer_certificate = 0;
-        }
-        else if( strcmp( argv[i], "--dtls-protocol=0" ) == 0 )
-        {
-            conf_dtls_proto = 0;
-        }
-        else
-        {
-            print_usage();
-            error_exit();
-        }
-
-        i++;
-    }
-}
-
-/*
- * This function prints base64 code to the stdout
- */
-void print_b64( const uint8_t *b, size_t len )
-{
-    size_t i = 0;
-    const uint8_t *end = b + len;
-    printf("\t");
-    while( b < end )
-    {
-        if( ++i > 75 )
-        {
-            printf( "\n\t" );
-            i = 0;
-        }
-        printf( "%c", *b++ );
-    }
-    printf( "\n" );
-    fflush( stdout );
-}
-
-/*
- * This function prints hex code from the buffer to the stdout.
- *
- * /p b         buffer with data to print
- * /p len       number of bytes to print
- * /p in_line   number of bytes in one line
- * /p prefix    prefix for the new lines
- */
-void print_hex( const uint8_t *b, size_t len,
-                const size_t in_line, const char *prefix )
-{
-    size_t i = 0;
-    const uint8_t *end = b + len;
-
-    if( prefix == NULL )
-    {
-        prefix = "";
-    }
-
-    while( b < end )
-    {
-        if( ++i > in_line )
-        {
-            printf( "\n%s", prefix );
-            i = 1;
-        }
-        printf( "%02X ", (uint8_t) *b++ );
-    }
-    printf("\n");
-    fflush(stdout);
-}
-
-/*
- *  Print the value of time_t in format e.g. 2020-01-23 13:05:59
- */
-void print_time( const time_t *time )
-{
-    char buf[20];
-    struct tm *t = gmtime( time );
-    static const char format[] = "%Y-%m-%d %H:%M:%S";
-    if( NULL != t )
-    {
-        strftime( buf, sizeof( buf ), format, t );
-        printf( "%s\n", buf );
-    }
-    else
-    {
-        printf( "unknown\n" );
-    }
-}
-
-/*
- * Print the input string if the bit is set in the value
- */
-void print_if_bit( const char *str, int bit, int val )
-{
-    if( bit & val )
-    {
-        printf( "\t%s\n", str );
-    }
-}
-
-/*
- * Return pointer to hardcoded "enabled" or "disabled" depending on the input value
- */
-const char * get_enabled_str( int is_en )
-{
-    return ( is_en ) ? "enabled" : "disabled";
-}
-
-/*
- * Return pointer to hardcoded MFL string value depending on the MFL code at the input
- */
-const char * get_mfl_str( int mfl_code )
-{
-    switch( mfl_code )
-    {
-        case MBEDTLS_SSL_MAX_FRAG_LEN_NONE:
-            return "none";
-        case MBEDTLS_SSL_MAX_FRAG_LEN_512:
-            return "512";
-        case MBEDTLS_SSL_MAX_FRAG_LEN_1024:
-            return "1024";
-        case MBEDTLS_SSL_MAX_FRAG_LEN_2048:
-            return "2048";
-        case MBEDTLS_SSL_MAX_FRAG_LEN_4096:
-            return "4096";
-        default:
-            return "error";
-    }
-}
-
-/*
- * Read next base64 code from the 'b64_file'. The 'b64_file' must be opened
- * previously. After each call to this function, the internal file position
- * indicator of the global b64_file is advanced.
- *
- * Note - This function checks the size of the input buffer and if necessary,
- *        increases it to the maximum MAX_BASE64_LEN
- *
- * /p b64       pointer to the pointer of the buffer for input data
- * /p max_len   pointer to the current buffer capacity. It can be changed if
- *              the buffer needs to be increased
- *
- * \retval      number of bytes written in to the b64 buffer or 0 in case no more
- *              data was found
- */
-size_t read_next_b64_code( uint8_t **b64, size_t *max_len )
-{
-    int valid_balance = 0;  /* balance between valid and invalid characters */
-    size_t len = 0;
-    char pad = 0;
-    int c = 0;
-
-    while( EOF != c )
-    {
-        char c_valid = 0;
-
-        c = fgetc( b64_file );
-
-        if( pad > 0 )
-        {
-            if( c == '=' && pad == 1 )
-            {
-                c_valid = 1;
-                pad = 2;
-            }
-        }
-        else if( ( c >= 'A' && c <= 'Z' ) ||
-                 ( c >= 'a' && c <= 'z' ) ||
-                 ( c >= '0' && c <= '9' ) ||
-                   c == '+' || c == '/' )
-        {
-            c_valid = 1;
-        }
-        else if( c == '=' )
-        {
-            c_valid = 1;
-            pad = 1;
-        }
-        else if( c == '-' )
-        {
-            c = '+';
-            c_valid = 1;
-        }
-        else if( c == '_' )
-        {
-            c = '/';
-            c_valid = 1;
-        }
-
-        if( c_valid )
-        {
-            /* A string of characters that could be a base64 code. */
-            valid_balance++;
-
-            if( len < *max_len )
-            {
-                ( *b64 )[ len++ ] = c;
-            }
-            else if( *max_len < MAX_BASE64_LEN )
-            {
-                /* Current buffer is too small, but can be resized. */
-                void *ptr;
-                size_t new_size = ( MAX_BASE64_LEN - 4096 > *max_len ) ?
-                                  *max_len + 4096 : MAX_BASE64_LEN;
-
-                ptr = realloc( *b64, new_size );
-                if( NULL == ptr )
-                {
-                    printf_err( alloc_err );
-                    return 0;
-                }
-                *b64 = ptr;
-                *max_len = new_size;
-                ( *b64 )[ len++ ] = c;
-            }
-            else
-            {
-                /* Too much data so it will be treated as invalid */
-                len++;
-            }
-        }
-        else if( len > 0 )
-        {
-            /* End of a string that could be a base64 code, but need to check
-             * that the length of the characters is correct. */
-
-            valid_balance--;
-
-            if( len < MIN_CONTEXT_LEN )
-            {
-                printf_dbg( "The code found is too small to be a SSL context.\n" );
-                len = pad = 0;
-            }
-            else if( len > *max_len )
-            {
-                printf_err( "The code found is too large by %u bytes.\n", len - *max_len );
-                len = pad = 0;
-            }
-            else if( len % 4 != 0 )
-            {
-                printf_err( "The length of the base64 code found should be a multiple of 4.\n" );
-                len = pad = 0;
-            }
-            else
-            {
-                /* Base64 code with valid character length. */
-                return len;
-            }
-        }
-        else
-        {
-            valid_balance--;
-        }
-
-        /* Detection of potentially wrong file format like: binary, zip, ISO, etc. */
-        if( valid_balance < -100 )
-        {
-            printf_err( "Too many bad symbols detected. File check aborted.\n" );
-            return 0;
-        }
-    }
-
-    printf_dbg( "End of file\n" );
-    return 0;
-}
-
-/*
- * This function deserializes and prints to the stdout all obtained information
- * about the certificates from provided data.
- *
- * /p ssl   pointer to serialized certificate
- * /p len   number of bytes in the buffer
-*/
-void print_deserialized_ssl_cert( const uint8_t *ssl, uint32_t len )
-{
-    enum { STRLEN = 4096 };
-    mbedtls_x509_crt crt;
-    int ret;
-    char str[STRLEN];
-
-    printf( "\nCertificate:\n" );
-
-    mbedtls_x509_crt_init( &crt );
-    ret = mbedtls_x509_crt_parse_der( &crt, ssl, len );
-    if( 0 != ret )
-    {
-        mbedtls_strerror( ret, str, STRLEN );
-        printf_err( "Invalid format of X.509 - %s\n", str );
-        printf( "Cannot deserialize:\n\t" );
-        print_hex( ssl, len, 25, "\t" );
-    }
-    else
-    {
-        mbedtls_x509_crt *current = &crt;
-
-        while( current != NULL )
-        {
-            ret = mbedtls_x509_crt_info( str, STRLEN, "\t", current );
-            if( 0 > ret )
-            {
-                mbedtls_strerror( ret, str, STRLEN );
-                printf_err( "Cannot write to the output - %s\n", str );
-            }
-            else
-            {
-                printf( "%s", str );
-            }
-
-            current = current->next;
-
-            if( current )
-            {
-                printf( "\n" );
-            }
-
-        }
-    }
-
-   mbedtls_x509_crt_free( &crt );
-}
-
-/*
- * This function deserializes and prints to the stdout all obtained information
- * about the session from provided data. This function was built based on
- * mbedtls_ssl_session_load(). mbedtls_ssl_session_load() could not be used
- * due to dependencies on the mbedTLS configuration.
- *
- * The data structure in the buffer:
- *  uint64 start_time;
- *  uint8 ciphersuite[2];        // defined by the standard
- *  uint8 compression;           // 0 or 1
- *  uint8 session_id_len;        // at most 32
- *  opaque session_id[32];
- *  opaque master[48];           // fixed length in the standard
- *  uint32 verify_result;
- *  opaque peer_cert<0..2^24-1>; // length 0 means no peer cert
- *  opaque ticket<0..2^24-1>;    // length 0 means no ticket
- *  uint32 ticket_lifetime;
- *  uint8 mfl_code;              // up to 255 according to standard
- *  uint8 trunc_hmac;            // 0 or 1
- *  uint8 encrypt_then_mac;      // 0 or 1
- *
- * /p ssl               pointer to serialized session
- * /p len               number of bytes in the buffer
- * /p session_cfg_flag  session configuration flags
- */
-void print_deserialized_ssl_session( const uint8_t *ssl, uint32_t len,
-                                     int session_cfg_flag )
-{
-    const struct mbedtls_ssl_ciphersuite_t * ciphersuite_info;
-    int ciphersuite_id;
-    uint32_t cert_len, ticket_len;
-    uint32_t verify_result, ticket_lifetime;
-    const uint8_t *end = ssl + len;
-
-    printf( "\nSession info:\n" );
-
-    if( session_cfg_flag & SESSION_CONFIG_TIME_BIT )
-    {
-        uint64_t start;
-        CHECK_SSL_END( 8 );
-        start = ( (uint64_t) ssl[0] << 56 ) |
-                ( (uint64_t) ssl[1] << 48 ) |
-                ( (uint64_t) ssl[2] << 40 ) |
-                ( (uint64_t) ssl[3] << 32 ) |
-                ( (uint64_t) ssl[4] << 24 ) |
-                ( (uint64_t) ssl[5] << 16 ) |
-                ( (uint64_t) ssl[6] <<  8 ) |
-                ( (uint64_t) ssl[7] );
-        ssl += 8;
-        printf( "\tstart time     : " );
-        print_time( (time_t*) &start );
-    }
-
-    CHECK_SSL_END( 2 );
-    ciphersuite_id = ( (int) ssl[0] << 8 ) | (int) ssl[1];
-    printf_dbg( "Ciphersuite ID: %d\n", ciphersuite_id );
-    ssl += 2;
-
-    ciphersuite_info = mbedtls_ssl_ciphersuite_from_id( ciphersuite_id );
-    if( ciphersuite_info == NULL )
-    {
-        printf_err( "Cannot find ciphersuite info\n" );
-    }
-    else
-    {
-        const mbedtls_cipher_info_t *cipher_info;
-        const mbedtls_md_info_t *md_info;
-
-        printf( "\tciphersuite    : %s\n", ciphersuite_info->name );
-        printf( "\tcipher flags   : 0x%02X\n", ciphersuite_info->flags );
-
-        cipher_info = mbedtls_cipher_info_from_type( ciphersuite_info->cipher );
-        if( cipher_info == NULL )
-        {
-            printf_err( "Cannot find cipher info\n" );
-        }
-        else
-        {
-            printf( "\tcipher         : %s\n", cipher_info->name );
-        }
-
-        md_info = mbedtls_md_info_from_type( ciphersuite_info->mac );
-        if( md_info == NULL )
-        {
-            printf_err( "Cannot find Message-Digest info\n" );
-        }
-        else
-        {
-            printf( "\tMessage-Digest : %s\n", md_info->name );
-        }
-    }
-
-    CHECK_SSL_END( 1 );
-    printf( "\tcompression    : %s\n", get_enabled_str( *ssl++ ) );
-
-    /* Note - Here we can get session ID length from serialized data, but we
-     * use hardcoded 32-bytes length. This approach was taken from
-     * 'mbedtls_ssl_session_load()'. */
-    CHECK_SSL_END( 1 + 32 );
-    printf_dbg( "Session id length: %u\n", (uint32_t) *ssl++ );
-    printf( "\tsession ID     : ");
-    print_hex( ssl, 32, 16, "\t                 " );
-    ssl += 32;
-
-    printf( "\tmaster secret  : ");
-    CHECK_SSL_END( 48 );
-    print_hex( ssl, 48, 16, "\t                 " );
-    ssl += 48;
-
-    CHECK_SSL_END( 4 );
-    verify_result = ( (uint32_t) ssl[0] << 24 ) |
-                    ( (uint32_t) ssl[1] << 16 ) |
-                    ( (uint32_t) ssl[2] <<  8 ) |
-                    ( (uint32_t) ssl[3] );
-    ssl += 4;
-    printf( "\tverify result  : 0x%08X\n", verify_result );
-
-    if( SESSION_CONFIG_CRT_BIT & session_cfg_flag )
-    {
-        if( conf_keep_peer_certificate )
-        {
-            CHECK_SSL_END( 3 );
-            cert_len = ( (uint32_t) ssl[0] << 16 ) |
-                       ( (uint32_t) ssl[1] <<  8 ) |
-                       ( (uint32_t) ssl[2] );
-            ssl += 3;
-            printf_dbg( "Certificate length: %u\n", cert_len );
-
-            if( cert_len > 0 )
-            {
-                CHECK_SSL_END( cert_len );
-                print_deserialized_ssl_cert( ssl, cert_len );
-                ssl += cert_len;
-            }
-        }
-        else
-        {
-            printf( "\tPeer digest    : " );
-
-            CHECK_SSL_END( 1 );
-            switch( (mbedtls_md_type_t) *ssl++ )
-            {
-                case MBEDTLS_MD_NONE:
-                    printf( "none\n" );
-                    break;
-                case MBEDTLS_MD_MD2:
-                    printf( "MD2\n" );
-                    break;
-                case MBEDTLS_MD_MD4:
-                    printf( "MD4\n" );
-                    break;
-                case MBEDTLS_MD_MD5:
-                    printf( "MD5\n" );
-                    break;
-                case MBEDTLS_MD_SHA1:
-                    printf( "SHA1\n" );
-                    break;
-                case MBEDTLS_MD_SHA224:
-                    printf( "SHA224\n" );
-                    break;
-                case MBEDTLS_MD_SHA256:
-                    printf( "SHA256\n" );
-                    break;
-                case MBEDTLS_MD_SHA384:
-                    printf( "SHA384\n" );
-                    break;
-                case MBEDTLS_MD_SHA512:
-                    printf( "SHA512\n" );
-                    break;
-                case MBEDTLS_MD_RIPEMD160:
-                    printf( "RIPEMD160\n" );
-                    break;
-                default:
-                    printf( "undefined or erroneous\n" );
-                    break;
-            }
-
-            CHECK_SSL_END( 1 );
-            cert_len  = (uint32_t) *ssl++;
-            printf_dbg( "Message-Digest length: %u\n", cert_len );
-
-            if( cert_len > 0 )
-            {
-                printf( "\tPeer digest cert : " );
-                CHECK_SSL_END( cert_len );
-                print_hex( ssl, cert_len, 16, "\t                   " );
-                ssl += cert_len;
-            }
-        }
-    }
-
-    if( SESSION_CONFIG_CLIENT_TICKET_BIT & session_cfg_flag )
-    {
-        printf( "\nTicket:\n" );
-
-        CHECK_SSL_END( 3 );
-        ticket_len = ( (uint32_t) ssl[0] << 16 ) |
-                     ( (uint32_t) ssl[1] <<  8 ) |
-                     ( (uint32_t) ssl[2] );
-        ssl += 3;
-        printf_dbg( "Ticket length: %u\n", ticket_len );
-
-        if( ticket_len > 0 )
-        {
-            printf( "\t" );
-            CHECK_SSL_END( ticket_len );
-            print_hex( ssl, ticket_len, 22, "\t" );
-            ssl += ticket_len;
-            printf( "\n" );
-        }
-
-        CHECK_SSL_END( 4 );
-        ticket_lifetime = ( (uint32_t) ssl[0] << 24 ) |
-                          ( (uint32_t) ssl[1] << 16 ) |
-                          ( (uint32_t) ssl[2] <<  8 ) |
-                          ( (uint32_t) ssl[3] );
-        ssl += 4;
-        printf( "\tlifetime : %u sec.\n", ticket_lifetime );
-    }
-
-    if( ssl < end )
-    {
-        printf( "\nSession others:\n" );
-    }
-
-    if( SESSION_CONFIG_MFL_BIT & session_cfg_flag )
-    {
-        CHECK_SSL_END( 1 );
-        printf( "\tMFL                      : %s\n", get_mfl_str( *ssl++ ) );
-    }
-
-    if( SESSION_CONFIG_TRUNC_HMAC_BIT & session_cfg_flag )
-    {
-        CHECK_SSL_END( 1 );
-        printf( "\tnegotiate truncated HMAC : %s\n", get_enabled_str( *ssl++ ) );
-    }
-
-    if( SESSION_CONFIG_ETM_BIT & session_cfg_flag )
-    {
-        CHECK_SSL_END( 1 );
-        printf( "\tEncrypt-then-MAC         : %s\n", get_enabled_str( *ssl++ ) );
-    }
-
-    if( 0 != ( end - ssl ) )
-    {
-        printf_err( "%i bytes left to analyze from session\n", (int32_t)( end - ssl ) );
-    }
-}
-
-/*
- * This function deserializes and prints to the stdout all obtained information
- * about the context from provided data. This function was built based on
- * mbedtls_ssl_context_load(). mbedtls_ssl_context_load() could not be used
- * due to dependencies on the mbedTLS configuration and the configuration of
- * the context when serialization was created.
- *
- * The data structure in the buffer:
- *  // header
- *  uint8 version[3];
- *  uint8 configuration[5];
- *  // session sub-structure
- *  uint32_t session_len;
- *  opaque session<1..2^32-1>;  // see mbedtls_ssl_session_save()
- *  // transform sub-structure
- *  uint8 random[64];           // ServerHello.random+ClientHello.random
- *  uint8 in_cid_len;
- *  uint8 in_cid<0..2^8-1>      // Connection ID: expected incoming value
- *  uint8 out_cid_len;
- *  uint8 out_cid<0..2^8-1>     // Connection ID: outgoing value to use
- *  // fields from ssl_context
- *  uint32 badmac_seen;         // DTLS: number of records with failing MAC
- *  uint64 in_window_top;       // DTLS: last validated record seq_num
- *  uint64 in_window;           // DTLS: bitmask for replay protection
- *  uint8 disable_datagram_packing; // DTLS: only one record per datagram
- *  uint64 cur_out_ctr;         // Record layer: outgoing sequence number
- *  uint16 mtu;                 // DTLS: path mtu (max outgoing fragment size)
- *  uint8 alpn_chosen_len;
- *  uint8 alpn_chosen<0..2^8-1> // ALPN: negotiated application protocol
- *
- * /p ssl   pointer to serialized session
- * /p len   number of bytes in the buffer
- */
-void print_deserialized_ssl_context( const uint8_t *ssl, size_t len )
-{
-    const uint8_t *end = ssl + len;
-    uint32_t session_len;
-    int session_cfg_flag;
-    int context_cfg_flag;
-
-    printf( "\nMbed TLS version:\n" );
-
-    CHECK_SSL_END( 3 + 2 + 3 );
-
-    printf( "\tmajor    %u\n", (uint32_t) *ssl++ );
-    printf( "\tminor    %u\n", (uint32_t) *ssl++ );
-    printf( "\tpath     %u\n", (uint32_t) *ssl++ );
-
-    printf( "\nEnabled session and context configuration:\n" );
-
-    session_cfg_flag = ( (int) ssl[0] << 8 ) | ( (int) ssl[1] );
-    ssl += 2;
-
-    context_cfg_flag = ( (int) ssl[0] << 16 ) |
-                       ( (int) ssl[1] <<  8 ) |
-                       ( (int) ssl[2] ) ;
-    ssl += 3;
-
-    printf_dbg( "Session config flags 0x%04X\n", session_cfg_flag );
-    printf_dbg( "Context config flags 0x%06X\n", context_cfg_flag );
-
-    print_if_bit( "MBEDTLS_HAVE_TIME", SESSION_CONFIG_TIME_BIT, session_cfg_flag );
-    print_if_bit( "MBEDTLS_X509_CRT_PARSE_C", SESSION_CONFIG_CRT_BIT, session_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_MAX_FRAGMENT_LENGTH", SESSION_CONFIG_MFL_BIT, session_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_TRUNCATED_HMAC", SESSION_CONFIG_TRUNC_HMAC_BIT, session_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_ENCRYPT_THEN_MAC", SESSION_CONFIG_ETM_BIT, session_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_SESSION_TICKETS", SESSION_CONFIG_TICKET_BIT, session_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_SESSION_TICKETS and client", SESSION_CONFIG_CLIENT_TICKET_BIT, session_cfg_flag );
-
-    print_if_bit( "MBEDTLS_SSL_DTLS_CONNECTION_ID", CONTEXT_CONFIG_DTLS_CONNECTION_ID_BIT, context_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_DTLS_BADMAC_LIMIT", CONTEXT_CONFIG_DTLS_BADMAC_LIMIT_BIT, context_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_DTLS_ANTI_REPLAY", CONTEXT_CONFIG_DTLS_ANTI_REPLAY_BIT, context_cfg_flag );
-    print_if_bit( "MBEDTLS_SSL_ALPN", CONTEXT_CONFIG_ALPN_BIT, context_cfg_flag );
-
-    CHECK_SSL_END( 4 );
-    session_len = ( (uint32_t) ssl[0] << 24 ) |
-                  ( (uint32_t) ssl[1] << 16 ) |
-                  ( (uint32_t) ssl[2] <<  8 ) |
-                  ( (uint32_t) ssl[3] );
-    ssl += 4;
-    printf_dbg( "Session length %u\n", session_len );
-
-    CHECK_SSL_END( session_len );
-    print_deserialized_ssl_session( ssl, session_len, session_cfg_flag );
-    ssl += session_len;
-
-    printf( "\nRandom bytes:\n\t");
-
-    CHECK_SSL_END( TRANSFORM_RANDBYTE_LEN );
-    print_hex( ssl, TRANSFORM_RANDBYTE_LEN, 22, "\t" );
-    ssl += TRANSFORM_RANDBYTE_LEN;
-
-    printf( "\nContext others:\n" );
-
-    if( CONTEXT_CONFIG_DTLS_CONNECTION_ID_BIT & context_cfg_flag )
-    {
-        uint8_t cid_len;
-
-        CHECK_SSL_END( 1 );
-        cid_len = *ssl++;
-        printf_dbg( "In CID length %u\n", (uint32_t) cid_len );
-
-        printf( "\tin CID                             : " );
-        if( cid_len > 0 )
-        {
-            CHECK_SSL_END( cid_len );
-            print_hex( ssl, cid_len, 20, "\t" );
-            ssl += cid_len;
-        }
-        else
-        {
-            printf( "none\n" );
-        }
-
-        CHECK_SSL_END( 1 );
-        cid_len = *ssl++;
-        printf_dbg( "Out CID length %u\n", (uint32_t) cid_len );
-
-        printf( "\tout CID                            : " );
-        if( cid_len > 0 )
-        {
-            CHECK_SSL_END( cid_len );
-            print_hex( ssl, cid_len, 20, "\t" );
-            ssl += cid_len;
-        }
-        else
-        {
-            printf( "none\n" );
-        }
-    }
-
-    if( CONTEXT_CONFIG_DTLS_BADMAC_LIMIT_BIT & context_cfg_flag )
-    {
-        uint32_t badmac_seen;
-
-        CHECK_SSL_END( 4 );
-        badmac_seen = ( (uint32_t) ssl[0] << 24 ) |
-                      ( (uint32_t) ssl[1] << 16 ) |
-                      ( (uint32_t) ssl[2] <<  8 ) |
-                      ( (uint32_t) ssl[3] );
-        ssl += 4;
-        printf( "\tbad MAC seen number                : %u\n", badmac_seen );
-
-        /* value 'in_window_top' from mbedtls_ssl_context */
-        printf( "\tlast validated record sequence no. : " );
-        CHECK_SSL_END( 8 );
-        print_hex( ssl, 8, 20, "" );
-        ssl += 8;
-
-        /* value 'in_window' from mbedtls_ssl_context */
-        printf( "\tbitmask for replay detection       : " );
-        CHECK_SSL_END( 8 );
-        print_hex( ssl, 8, 20, "" );
-        ssl += 8;
-    }
-
-    if( conf_dtls_proto )
-    {
-        CHECK_SSL_END( 1 );
-        printf( "\tDTLS datagram packing              : %s\n",
-                get_enabled_str( ! ( *ssl++ ) ) );
-    }
-
-    /* value 'cur_out_ctr' from mbedtls_ssl_context */
-    printf( "\toutgoing record sequence no.       : ");
-    CHECK_SSL_END( 8 );
-    print_hex( ssl, 8, 20, "" );
-    ssl += 8;
-
-    if( conf_dtls_proto )
-    {
-        uint16_t mtu;
-        CHECK_SSL_END( 2 );
-        mtu = ( ssl[0] << 8 ) | ssl[1];
-        ssl += 2;
-        printf( "\tMTU                                : %u\n", mtu );
-    }
-
-
-    if( CONTEXT_CONFIG_ALPN_BIT & context_cfg_flag )
-    {
-        uint8_t alpn_len;
-
-        CHECK_SSL_END( 1 );
-        alpn_len = *ssl++;
-        printf_dbg( "ALPN length %u\n", (uint32_t) alpn_len );
-
-        printf( "\tALPN negotiation                   : " );
-        CHECK_SSL_END( alpn_len );
-        if( alpn_len > 0 )
-        {
-            if( strlen( (const char*) ssl ) == alpn_len )
-            {
-                printf( "%s\n", ssl );
-            }
-            else
-            {
-                printf( "\n" );
-                printf_err( "\tALPN negotiation is incorrect\n" );
-            }
-            ssl += alpn_len;
-        }
-        else
-        {
-            printf( "not selected\n" );
-        }
-    }
-
-    if( 0 != ( end - ssl ) )
-    {
-        printf_err( "%i bytes left to analyze from context\n", (int32_t)( end - ssl ) );
-    }
-    printf( "\n" );
-}
-
-int main( int argc, char *argv[] )
-{
-    enum { SSL_INIT_LEN = 4096 };
-
-    uint32_t b64_counter = 0;
-    uint8_t *b64_buf = NULL;
-    uint8_t *ssl_buf = NULL;
-    size_t b64_max_len = SSL_INIT_LEN;
-    size_t ssl_max_len = SSL_INIT_LEN;
-    size_t ssl_len = 0;
-
-     /* The 'b64_file' is opened when parsing arguments to check that the
-      * file name is correct */
-    parse_arguments( argc, argv );
-
-    if( NULL != b64_file )
-    {
-        b64_buf = malloc( SSL_INIT_LEN );
-        ssl_buf = malloc( SSL_INIT_LEN );
-
-        if( NULL == b64_buf || NULL == ssl_buf )
-        {
-            printf_err( alloc_err );
-            fclose( b64_file );
-            b64_file = NULL;
-        }
-    }
-
-    while( NULL != b64_file )
-    {
-        size_t b64_len = read_next_b64_code( &b64_buf, &b64_max_len );
-        if( b64_len > 0)
-        {
-            int ret;
-            size_t ssl_required_len = b64_len * 3 / 4 + 1;
-
-            /* Allocate more memory if necessary. */
-            if( ssl_required_len > ssl_max_len )
-            {
-                void *ptr = realloc( ssl_buf, ssl_required_len );
-                if( NULL == ptr )
-                {
-                    printf_err( alloc_err );
-                    fclose( b64_file );
-                    b64_file = NULL;
-                    break;
-                }
-                ssl_buf = ptr;
-                ssl_max_len = ssl_required_len;
-            }
-
-            printf( "\nDeserializing number %u:\n",  ++b64_counter );
-
-            printf( "\nBase64 code:\n" );
-            print_b64( b64_buf, b64_len );
-
-            ret = mbedtls_base64_decode( ssl_buf, ssl_max_len, &ssl_len, b64_buf, b64_len );
-            if( ret != 0)
-            {
-                mbedtls_strerror( ret, (char*) b64_buf, b64_max_len );
-                printf_err( "base64 code cannot be decoded - %s\n", b64_buf );
-                continue;
-            }
-
-            if( debug )
-            {
-                printf( "\nDecoded data in hex:\n\t");
-                print_hex( ssl_buf, ssl_len, 25, "\t" );
-            }
-
-            print_deserialized_ssl_context( ssl_buf, ssl_len );
-
-        }
-        else
-        {
-            fclose( b64_file );
-            b64_file = NULL;
-        }
-    }
-
-    free( b64_buf );
-    free( ssl_buf );
-
-    if( b64_counter > 0 )
-    {
-        printf_dbg( "Finished. Found %u base64 codes\n", b64_counter );
-    }
-    else
-    {
-        printf( "Finished. No valid base64 code found\n" );
-    }
-
-    return 0;
-}
-
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c
deleted file mode 100644
index 3a07179..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_fork_server.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- *  SSL server demonstration program using fork() for handling multiple clients
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_fprintf         fprintf
-#define mbedtls_printf          printf
-#define mbedtls_time_t          time_t
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif /* MBEDTLS_PLATFORM_C */
-
-#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_CERTS_C) ||    \
-    !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_SSL_TLS_C) || \
-    !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_NET_C) ||     \
-    !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_CTR_DRBG_C) ||    \
-    !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_TIMING_C) || \
-    !defined(MBEDTLS_FS_IO) || !defined(MBEDTLS_PEM_PARSE_C)
-int main( int argc, char *argv[] )
-{
-    ((void) argc);
-    ((void) argv);
-
-    mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_CERTS_C and/or MBEDTLS_ENTROPY_C "
-           "and/or MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or "
-           "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
-           "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C and/or "
-           "MBEDTLS_TIMING_C and/or MBEDTLS_PEM_PARSE_C not defined.\n");
-    mbedtls_exit( 0 );
-}
-#elif defined(_WIN32)
-int main( void )
-{
-    mbedtls_printf("_WIN32 defined. This application requires fork() and signals "
-           "to work correctly.\n");
-    mbedtls_exit( 0 );
-}
-#else
-
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/timing.h"
-
-#include <string.h>
-#include <signal.h>
-
-#if !defined(_MSC_VER) || defined(EFIX64) || defined(EFI32)
-#include <unistd.h>
-#endif
-
-#define HTTP_RESPONSE \
-    "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
-    "<h2>mbed TLS Test Server</h2>\r\n" \
-    "<p>Successful connection using: %s</p>\r\n"
-
-#define DEBUG_LEVEL 0
-
-
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
-    fflush(  (FILE *) ctx  );
-}
-
-int main( void )
-{
-    int ret = 1, len, cnt = 0, pid;
-    int exit_code = MBEDTLS_EXIT_FAILURE;
-    mbedtls_net_context listen_fd, client_fd;
-    unsigned char buf[1024];
-    const char *pers = "ssl_fork_server";
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt srvcert;
-    mbedtls_pk_context pkey;
-
-    mbedtls_net_init( &listen_fd );
-    mbedtls_net_init( &client_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    mbedtls_entropy_init( &entropy );
-    mbedtls_pk_init( &pkey );
-    mbedtls_x509_crt_init( &srvcert );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-    signal( SIGCHLD, SIG_IGN );
-
-    /*
-     * 0. Initial seeding of the RNG
-     */
-    mbedtls_printf( "\n  . Initial seeding of the random generator..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_ctr_drbg_seed returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 1. Load the certificates and private RSA key
-     */
-    mbedtls_printf( "  . Loading the server cert. and key..." );
-    fflush( stdout );
-
-    /*
-     * This demonstration program uses embedded test certificates.
-     * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the
-     * server and CA certificates, as well as mbedtls_pk_parse_keyfile().
-     */
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
-                          mbedtls_test_srv_crt_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
-                          mbedtls_test_cas_pem_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret =  mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
-                          mbedtls_test_srv_key_len, NULL, 0 );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_pk_parse_key returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 1b. Prepare SSL configuration
-     */
-    mbedtls_printf( "  . Configuring SSL..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_SERVER,
-                    MBEDTLS_SSL_TRANSPORT_STREAM,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_ssl_config_defaults returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-
-    mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
-    if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 2. Setup the listening TCP socket
-     */
-    mbedtls_printf( "  . Bind on https://localhost:4433/ ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "4433", MBEDTLS_NET_PROTO_TCP ) ) != 0 )
-    {
-        mbedtls_printf( " failed!  mbedtls_net_bind returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    while( 1 )
-    {
-        /*
-         * 3. Wait until a client connects
-         */
-        mbedtls_net_init( &client_fd );
-        mbedtls_ssl_init( &ssl );
-
-        mbedtls_printf( "  . Waiting for a remote connection ...\n" );
-        fflush( stdout );
-
-        if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
-                                        NULL, 0, NULL ) ) != 0 )
-        {
-            mbedtls_printf( " failed!  mbedtls_net_accept returned %d\n\n", ret );
-            goto exit;
-        }
-
-        /*
-         * 3.5. Forking server thread
-         */
-
-        mbedtls_printf( "  . Forking to handle connection ..." );
-        fflush( stdout );
-
-        pid = fork();
-
-        if( pid < 0 )
-        {
-            mbedtls_printf(" failed!  fork returned %d\n\n", pid );
-            goto exit;
-        }
-
-        if( pid != 0 )
-        {
-            mbedtls_printf( " ok\n" );
-            mbedtls_net_close( &client_fd );
-
-            if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg,
-                                         (const unsigned char *) "parent",
-                                         6 ) ) != 0 )
-            {
-                mbedtls_printf( " failed!  mbedtls_ctr_drbg_reseed returned %d\n\n", ret );
-                goto exit;
-            }
-
-            continue;
-        }
-
-        mbedtls_net_close( &listen_fd );
-
-        pid = getpid();
-
-        /*
-         * 4. Setup stuff
-         */
-        mbedtls_printf( "pid %d: Setting up the SSL data.\n", pid );
-        fflush( stdout );
-
-        if( ( ret = mbedtls_ctr_drbg_reseed( &ctr_drbg,
-                                     (const unsigned char *) "child",
-                                     5 ) ) != 0 )
-        {
-            mbedtls_printf(
-                    "pid %d: SSL setup failed!  mbedtls_ctr_drbg_reseed returned %d\n\n",
-                    pid, ret );
-            goto exit;
-        }
-
-        if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-        {
-            mbedtls_printf(
-                    "pid %d: SSL setup failed!  mbedtls_ssl_setup returned %d\n\n",
-                    pid, ret );
-            goto exit;
-        }
-
-        mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
-
-        mbedtls_printf( "pid %d: SSL setup ok\n", pid );
-
-        /*
-         * 5. Handshake
-         */
-        mbedtls_printf( "pid %d: Performing the SSL/TLS handshake.\n", pid );
-        fflush( stdout );
-
-        while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-        {
-            if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-            {
-                mbedtls_printf(
-                        "pid %d: SSL handshake failed!  mbedtls_ssl_handshake returned %d\n\n",
-                        pid, ret );
-                goto exit;
-            }
-        }
-
-        mbedtls_printf( "pid %d: SSL handshake ok\n", pid );
-
-        /*
-         * 6. Read the HTTP Request
-         */
-        mbedtls_printf( "pid %d: Start reading from client.\n", pid );
-        fflush( stdout );
-
-        do
-        {
-            len = sizeof( buf ) - 1;
-            memset( buf, 0, sizeof( buf ) );
-            ret = mbedtls_ssl_read( &ssl, buf, len );
-
-            if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
-                continue;
-
-            if( ret <= 0 )
-            {
-                switch( ret )
-                {
-                    case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                        mbedtls_printf( "pid %d: connection was closed gracefully\n", pid );
-                        break;
-
-                    case MBEDTLS_ERR_NET_CONN_RESET:
-                        mbedtls_printf( "pid %d: connection was reset by peer\n", pid );
-                        break;
-
-                    default:
-                        mbedtls_printf( "pid %d: mbedtls_ssl_read returned %d\n", pid, ret );
-                        break;
-                }
-
-                break;
-            }
-
-            len = ret;
-            mbedtls_printf( "pid %d: %d bytes read\n\n%s", pid, len, (char *) buf );
-
-            if( ret > 0 )
-                break;
-        }
-        while( 1 );
-
-        /*
-         * 7. Write the 200 Response
-         */
-        mbedtls_printf( "pid %d: Start writing to client.\n", pid );
-        fflush( stdout );
-
-        len = sprintf( (char *) buf, HTTP_RESPONSE,
-                mbedtls_ssl_get_ciphersuite( &ssl ) );
-
-        while( cnt++ < 100 )
-        {
-            while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
-            {
-                if( ret == MBEDTLS_ERR_NET_CONN_RESET )
-                {
-                    mbedtls_printf(
-                            "pid %d: Write failed!  peer closed the connection\n\n", pid );
-                    goto exit;
-                }
-
-                if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-                {
-                    mbedtls_printf(
-                            "pid %d: Write failed!  mbedtls_ssl_write returned %d\n\n",
-                            pid, ret );
-                    goto exit;
-                }
-            }
-            len = ret;
-            mbedtls_printf( "pid %d: %d bytes written\n\n%s\n", pid, len, (char *) buf );
-
-            mbedtls_net_usleep( 1000000 );
-        }
-
-        mbedtls_ssl_close_notify( &ssl );
-        goto exit;
-    }
-
-    exit_code = MBEDTLS_EXIT_SUCCESS;
-
-exit:
-    mbedtls_net_free( &client_fd );
-    mbedtls_net_free( &listen_fd );
-
-    mbedtls_x509_crt_free( &srvcert );
-    mbedtls_pk_free( &pkey );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    mbedtls_exit( exit_code );
-}
-#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_CERTS_C && MBEDTLS_ENTROPY_C &&
-          MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C &&
-          MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_PEM_PARSE_C &&
-          ! _WIN32 */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c
deleted file mode 100644
index fb965f6..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_mail_client.c
+++ /dev/null
@@ -1,859 +0,0 @@
-/*
- *  SSL client for SMTP servers
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-/* Enable definition of gethostname() even when compiling with -std=c99. Must
- * be set before config.h, which pulls in glibc's features.h indirectly.
- * Harmless on other platforms. */
-#define _POSIX_C_SOURCE 200112L
-#define _XOPEN_SOURCE 600
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_time            time
-#define mbedtls_time_t          time_t
-#define mbedtls_fprintf         fprintf
-#define mbedtls_printf          printf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif /* MBEDTLS_PLATFORM_C */
-
-#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_ENTROPY_C) ||  \
-    !defined(MBEDTLS_SSL_TLS_C) || !defined(MBEDTLS_SSL_CLI_C) || \
-    !defined(MBEDTLS_NET_C) || !defined(MBEDTLS_RSA_C) ||         \
-    !defined(MBEDTLS_CTR_DRBG_C) || !defined(MBEDTLS_X509_CRT_PARSE_C) || \
-    !defined(MBEDTLS_FS_IO)
-int main( void )
-{
-    mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_ENTROPY_C and/or "
-           "MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_CLI_C and/or "
-           "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
-           "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C "
-           "not defined.\n");
-    mbedtls_exit( 0 );
-}
-#else
-
-#include "mbedtls/base64.h"
-#include "mbedtls/error.h"
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-
-#include <stdlib.h>
-#include <string.h>
-
-#if !defined(_MSC_VER) || defined(EFIX64) || defined(EFI32)
-#include <unistd.h>
-#else
-#include <io.h>
-#endif
-
-#if defined(_WIN32) || defined(_WIN32_WCE)
-#include <winsock2.h>
-#include <windows.h>
-
-#if defined(_MSC_VER)
-#if defined(_WIN32_WCE)
-#pragma comment( lib, "ws2.lib" )
-#else
-#pragma comment( lib, "ws2_32.lib" )
-#endif
-#endif /* _MSC_VER */
-#endif
-
-#define DFL_SERVER_NAME         "localhost"
-#define DFL_SERVER_PORT         "465"
-#define DFL_USER_NAME           "user"
-#define DFL_USER_PWD            "password"
-#define DFL_MAIL_FROM           ""
-#define DFL_MAIL_TO             ""
-#define DFL_DEBUG_LEVEL         0
-#define DFL_CA_FILE             ""
-#define DFL_CRT_FILE            ""
-#define DFL_KEY_FILE            ""
-#define DFL_FORCE_CIPHER        0
-#define DFL_MODE                0
-#define DFL_AUTHENTICATION      0
-
-#define MODE_SSL_TLS            0
-#define MODE_STARTTLS           0
-
-#if defined(MBEDTLS_BASE64_C)
-#define USAGE_AUTH \
-    "    authentication=%%d   default: 0 (disabled)\n"          \
-    "    user_name=%%s        default: \"" DFL_USER_NAME "\"\n" \
-    "    user_pwd=%%s         default: \"" DFL_USER_PWD "\"\n"
-#else
-#define USAGE_AUTH \
-    "    authentication options disabled. (Require MBEDTLS_BASE64_C)\n"
-#endif /* MBEDTLS_BASE64_C */
-
-#if defined(MBEDTLS_FS_IO)
-#define USAGE_IO \
-    "    ca_file=%%s          default: \"\" (pre-loaded)\n" \
-    "    crt_file=%%s         default: \"\" (pre-loaded)\n" \
-    "    key_file=%%s         default: \"\" (pre-loaded)\n"
-#else
-#define USAGE_IO \
-    "    No file operations available (MBEDTLS_FS_IO not defined)\n"
-#endif /* MBEDTLS_FS_IO */
-
-#define USAGE \
-    "\n usage: ssl_mail_client param=<>...\n"                 \
-    "\n acceptable parameters:\n"                             \
-    "    server_name=%%s      default: " DFL_SERVER_NAME "\n" \
-    "    server_port=%%d      default: " DFL_SERVER_PORT "\n" \
-    "    debug_level=%%d      default: 0 (disabled)\n"        \
-    "    mode=%%d             default: 0 (SSL/TLS) (1 for STARTTLS)\n"  \
-    USAGE_AUTH                                                \
-    "    mail_from=%%s        default: \"\"\n"                \
-    "    mail_to=%%s          default: \"\"\n"                \
-    USAGE_IO                                                  \
-    "    force_ciphersuite=<name>    default: all enabled\n"  \
-    " acceptable ciphersuite names:\n"
-
-
-/*
- * global options
- */
-struct options
-{
-    const char *server_name;    /* hostname of the server (client only)     */
-    const char *server_port;    /* port on which the ssl service runs       */
-    int debug_level;            /* level of debugging                       */
-    int authentication;         /* if authentication is required            */
-    int mode;                   /* SSL/TLS (0) or STARTTLS (1)              */
-    const char *user_name;      /* username to use for authentication       */
-    const char *user_pwd;       /* password to use for authentication       */
-    const char *mail_from;      /* E-Mail address to use as sender          */
-    const char *mail_to;        /* E-Mail address to use as recipient       */
-    const char *ca_file;        /* the file with the CA certificate(s)      */
-    const char *crt_file;       /* the file with the client certificate     */
-    const char *key_file;       /* the file with the client key             */
-    int force_ciphersuite[2];   /* protocol/ciphersuite to use, or all      */
-} opt;
-
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
-    fflush(  (FILE *) ctx  );
-}
-
-static int do_handshake( mbedtls_ssl_context *ssl )
-{
-    int ret;
-    uint32_t flags;
-    unsigned char buf[1024];
-    memset(buf, 0, 1024);
-
-    /*
-     * 4. Handshake
-     */
-    mbedtls_printf( "  . Performing the SSL/TLS handshake..." );
-    fflush( stdout );
-
-    while( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-#if defined(MBEDTLS_ERROR_C)
-            mbedtls_strerror( ret, (char *) buf, 1024 );
-#endif
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned %d: %s\n\n", ret, buf );
-            return( -1 );
-        }
-    }
-
-    mbedtls_printf( " ok\n    [ Ciphersuite is %s ]\n",
-            mbedtls_ssl_get_ciphersuite( ssl ) );
-
-    /*
-     * 5. Verify the server certificate
-     */
-    mbedtls_printf( "  . Verifying peer X.509 certificate..." );
-
-    /* In real life, we probably want to bail out when ret != 0 */
-    if( ( flags = mbedtls_ssl_get_verify_result( ssl ) ) != 0 )
-    {
-        char vrfy_buf[512];
-
-        mbedtls_printf( " failed\n" );
-
-        mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), "  ! ", flags );
-
-        mbedtls_printf( "%s\n", vrfy_buf );
-    }
-    else
-        mbedtls_printf( " ok\n" );
-
-    mbedtls_printf( "  . Peer certificate information    ...\n" );
-    mbedtls_x509_crt_info( (char *) buf, sizeof( buf ) - 1, "      ",
-                   mbedtls_ssl_get_peer_cert( ssl ) );
-    mbedtls_printf( "%s\n", buf );
-
-    return( 0 );
-}
-
-static int write_ssl_data( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
-{
-    int ret;
-
-    mbedtls_printf("\n%s", buf);
-    while( len && ( ret = mbedtls_ssl_write( ssl, buf, len ) ) <= 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-            return -1;
-        }
-    }
-
-    return( 0 );
-}
-
-static int write_ssl_and_get_response( mbedtls_ssl_context *ssl, unsigned char *buf, size_t len )
-{
-    int ret;
-    unsigned char data[128];
-    char code[4];
-    size_t i, idx = 0;
-
-    mbedtls_printf("\n%s", buf);
-    while( len && ( ret = mbedtls_ssl_write( ssl, buf, len ) ) <= 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-            return -1;
-        }
-    }
-
-    do
-    {
-        len = sizeof( data ) - 1;
-        memset( data, 0, sizeof( data ) );
-        ret = mbedtls_ssl_read( ssl, data, len );
-
-        if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
-            continue;
-
-        if( ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY )
-            return -1;
-
-        if( ret <= 0 )
-        {
-            mbedtls_printf( "failed\n  ! mbedtls_ssl_read returned %d\n\n", ret );
-            return -1;
-        }
-
-        mbedtls_printf("\n%s", data);
-        len = ret;
-        for( i = 0; i < len; i++ )
-        {
-            if( data[i] != '\n' )
-            {
-                if( idx < 4 )
-                    code[ idx++ ] = data[i];
-                continue;
-            }
-
-            if( idx == 4 && code[0] >= '0' && code[0] <= '9' && code[3] == ' ' )
-            {
-                code[3] = '\0';
-                return atoi( code );
-            }
-
-            idx = 0;
-        }
-    }
-    while( 1 );
-}
-
-static int write_and_get_response( mbedtls_net_context *sock_fd, unsigned char *buf, size_t len )
-{
-    int ret;
-    unsigned char data[128];
-    char code[4];
-    size_t i, idx = 0;
-
-    mbedtls_printf("\n%s", buf);
-    if( len && ( ret = mbedtls_net_send( sock_fd, buf, len ) ) <= 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_send returned %d\n\n", ret );
-            return -1;
-    }
-
-    do
-    {
-        len = sizeof( data ) - 1;
-        memset( data, 0, sizeof( data ) );
-        ret = mbedtls_net_recv( sock_fd, data, len );
-
-        if( ret <= 0 )
-        {
-            mbedtls_printf( "failed\n  ! mbedtls_net_recv returned %d\n\n", ret );
-            return -1;
-        }
-
-        data[len] = '\0';
-        mbedtls_printf("\n%s", data);
-        len = ret;
-        for( i = 0; i < len; i++ )
-        {
-            if( data[i] != '\n' )
-            {
-                if( idx < 4 )
-                    code[ idx++ ] = data[i];
-                continue;
-            }
-
-            if( idx == 4 && code[0] >= '0' && code[0] <= '9' && code[3] == ' ' )
-            {
-                code[3] = '\0';
-                return atoi( code );
-            }
-
-            idx = 0;
-        }
-    }
-    while( 1 );
-}
-
-int main( int argc, char *argv[] )
-{
-    int ret = 1, len;
-    int exit_code = MBEDTLS_EXIT_FAILURE;
-    mbedtls_net_context server_fd;
-#if defined(MBEDTLS_BASE64_C)
-    unsigned char base[1024];
-    /* buf is used as the destination buffer for printing base with the format:
-     * "%s\r\n". Hence, the size of buf should be at least the size of base
-     * plus 2 bytes for the \r and \n characters.
-     */
-    unsigned char buf[sizeof( base ) + 2];
-#else
-    unsigned char buf[1024];
-#endif
-    char hostname[32];
-    const char *pers = "ssl_mail_client";
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt cacert;
-    mbedtls_x509_crt clicert;
-    mbedtls_pk_context pkey;
-    int i;
-    size_t n;
-    char *p, *q;
-    const int *list;
-
-    /*
-     * Make sure memory references are valid in case we exit early.
-     */
-    mbedtls_net_init( &server_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    memset( &buf, 0, sizeof( buf ) );
-    mbedtls_x509_crt_init( &cacert );
-    mbedtls_x509_crt_init( &clicert );
-    mbedtls_pk_init( &pkey );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-    if( argc == 0 )
-    {
-    usage:
-        mbedtls_printf( USAGE );
-
-        list = mbedtls_ssl_list_ciphersuites();
-        while( *list )
-        {
-            mbedtls_printf("    %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) );
-            list++;
-        }
-        mbedtls_printf("\n");
-        goto exit;
-    }
-
-    opt.server_name         = DFL_SERVER_NAME;
-    opt.server_port         = DFL_SERVER_PORT;
-    opt.debug_level         = DFL_DEBUG_LEVEL;
-    opt.authentication      = DFL_AUTHENTICATION;
-    opt.mode                = DFL_MODE;
-    opt.user_name           = DFL_USER_NAME;
-    opt.user_pwd            = DFL_USER_PWD;
-    opt.mail_from           = DFL_MAIL_FROM;
-    opt.mail_to             = DFL_MAIL_TO;
-    opt.ca_file             = DFL_CA_FILE;
-    opt.crt_file            = DFL_CRT_FILE;
-    opt.key_file            = DFL_KEY_FILE;
-    opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
-
-    for( i = 1; i < argc; i++ )
-    {
-        p = argv[i];
-        if( ( q = strchr( p, '=' ) ) == NULL )
-            goto usage;
-        *q++ = '\0';
-
-        if( strcmp( p, "server_name" ) == 0 )
-            opt.server_name = q;
-        else if( strcmp( p, "server_port" ) == 0 )
-            opt.server_port = q;
-        else if( strcmp( p, "debug_level" ) == 0 )
-        {
-            opt.debug_level = atoi( q );
-            if( opt.debug_level < 0 || opt.debug_level > 65535 )
-                goto usage;
-        }
-        else if( strcmp( p, "authentication" ) == 0 )
-        {
-            opt.authentication = atoi( q );
-            if( opt.authentication < 0 || opt.authentication > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "mode" ) == 0 )
-        {
-            opt.mode = atoi( q );
-            if( opt.mode < 0 || opt.mode > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "user_name" ) == 0 )
-            opt.user_name = q;
-        else if( strcmp( p, "user_pwd" ) == 0 )
-            opt.user_pwd = q;
-        else if( strcmp( p, "mail_from" ) == 0 )
-            opt.mail_from = q;
-        else if( strcmp( p, "mail_to" ) == 0 )
-            opt.mail_to = q;
-        else if( strcmp( p, "ca_file" ) == 0 )
-            opt.ca_file = q;
-        else if( strcmp( p, "crt_file" ) == 0 )
-            opt.crt_file = q;
-        else if( strcmp( p, "key_file" ) == 0 )
-            opt.key_file = q;
-        else if( strcmp( p, "force_ciphersuite" ) == 0 )
-        {
-            opt.force_ciphersuite[0] = -1;
-
-            opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q );
-
-            if( opt.force_ciphersuite[0] <= 0 )
-                goto usage;
-
-            opt.force_ciphersuite[1] = 0;
-        }
-        else
-            goto usage;
-    }
-
-    /*
-     * 0. Initialize the RNG and the session data
-     */
-    mbedtls_printf( "\n  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    mbedtls_entropy_init( &entropy );
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 1.1. Load the trusted CA
-     */
-    mbedtls_printf( "  . Loading the CA root certificate ..." );
-    fflush( stdout );
-
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.ca_file ) )
-        ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_PEM_PARSE_C)
-        ret = mbedtls_x509_crt_parse( &cacert, (const unsigned char *) mbedtls_test_cas_pem,
-                              mbedtls_test_cas_pem_len );
-#else
-    {
-        mbedtls_printf("MBEDTLS_CERTS_C and/or MBEDTLS_PEM_PARSE_C not defined.");
-        goto exit;
-    }
-#endif
-    if( ret < 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok (%d skipped)\n", ret );
-
-    /*
-     * 1.2. Load own certificate and private key
-     *
-     * (can be skipped if client authentication is not required)
-     */
-    mbedtls_printf( "  . Loading the client cert. and key..." );
-    fflush( stdout );
-
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.crt_file ) )
-        ret = mbedtls_x509_crt_parse_file( &clicert, opt.crt_file );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C)
-        ret = mbedtls_x509_crt_parse( &clicert, (const unsigned char *) mbedtls_test_cli_crt,
-                              mbedtls_test_cli_crt_len );
-#else
-    {
-        mbedtls_printf("MBEDTLS_CERTS_C not defined.");
-        goto exit;
-    }
-#endif
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.key_file ) )
-        ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file, "" );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C) && defined(MBEDTLS_PEM_PARSE_C)
-        ret = mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_cli_key,
-                mbedtls_test_cli_key_len, NULL, 0 );
-#else
-    {
-        mbedtls_printf("MBEDTLS_CERTS_C or MBEDTLS_PEM_PARSE_C not defined.");
-        goto exit;
-    }
-#endif
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_pk_parse_key returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 2. Start the connection
-     */
-    mbedtls_printf( "  . Connecting to tcp/%s/%s...", opt.server_name,
-                                                opt.server_port );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_connect( &server_fd, opt.server_name,
-                             opt.server_port, MBEDTLS_NET_PROTO_TCP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_connect returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 3. Setup stuff
-     */
-    mbedtls_printf( "  . Setting up the SSL/TLS structure..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_CLIENT,
-                    MBEDTLS_SSL_TRANSPORT_STREAM,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
-        goto exit;
-    }
-
-    /* OPTIONAL is not optimal for security,
-     * but makes interop easier in this simplified example */
-    mbedtls_ssl_conf_authmode( &conf, MBEDTLS_SSL_VERIFY_OPTIONAL );
-
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-
-    if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
-        mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
-
-    mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
-    if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &clicert, &pkey ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-        goto exit;
-    }
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret );
-        goto exit;
-    }
-
-    if( ( ret = mbedtls_ssl_set_hostname( &ssl, opt.server_name ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, &server_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
-
-    mbedtls_printf( " ok\n" );
-
-    if( opt.mode == MODE_SSL_TLS )
-    {
-        if( do_handshake( &ssl ) != 0 )
-            goto exit;
-
-        mbedtls_printf( "  > Get header from server:" );
-        fflush( stdout );
-
-        ret = write_ssl_and_get_response( &ssl, buf, 0 );
-        if( ret < 200 || ret > 299 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-
-        mbedtls_printf( "  > Write EHLO to server:" );
-        fflush( stdout );
-
-        gethostname( hostname, 32 );
-        len = sprintf( (char *) buf, "EHLO %s\r\n", hostname );
-        ret = write_ssl_and_get_response( &ssl, buf, len );
-        if( ret < 200 || ret > 299 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-    }
-    else
-    {
-        mbedtls_printf( "  > Get header from server:" );
-        fflush( stdout );
-
-        ret = write_and_get_response( &server_fd, buf, 0 );
-        if( ret < 200 || ret > 299 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-
-        mbedtls_printf( "  > Write EHLO to server:" );
-        fflush( stdout );
-
-        gethostname( hostname, 32 );
-        len = sprintf( (char *) buf, "EHLO %s\r\n", hostname );
-        ret = write_and_get_response( &server_fd, buf, len );
-        if( ret < 200 || ret > 299 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-
-        mbedtls_printf( "  > Write STARTTLS to server:" );
-        fflush( stdout );
-
-        gethostname( hostname, 32 );
-        len = sprintf( (char *) buf, "STARTTLS\r\n" );
-        ret = write_and_get_response( &server_fd, buf, len );
-        if( ret < 200 || ret > 299 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-
-        if( do_handshake( &ssl ) != 0 )
-            goto exit;
-    }
-
-#if defined(MBEDTLS_BASE64_C)
-    if( opt.authentication )
-    {
-        mbedtls_printf( "  > Write AUTH LOGIN to server:" );
-        fflush( stdout );
-
-        len = sprintf( (char *) buf, "AUTH LOGIN\r\n" );
-        ret = write_ssl_and_get_response( &ssl, buf, len );
-        if( ret < 200 || ret > 399 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-
-        mbedtls_printf( "  > Write username to server: %s", opt.user_name );
-        fflush( stdout );
-
-        ret = mbedtls_base64_encode( base, sizeof( base ), &n, (const unsigned char *) opt.user_name,
-                             strlen( opt.user_name ) );
-
-        if( ret != 0 ) {
-            mbedtls_printf( " failed\n  ! mbedtls_base64_encode returned %d\n\n", ret );
-            goto exit;
-        }
-        len = sprintf( (char *) buf, "%s\r\n", base );
-        ret = write_ssl_and_get_response( &ssl, buf, len );
-        if( ret < 300 || ret > 399 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-
-        mbedtls_printf( "  > Write password to server: %s", opt.user_pwd );
-        fflush( stdout );
-
-        ret = mbedtls_base64_encode( base, sizeof( base ), &n, (const unsigned char *) opt.user_pwd,
-                             strlen( opt.user_pwd ) );
-
-        if( ret != 0 ) {
-            mbedtls_printf( " failed\n  ! mbedtls_base64_encode returned %d\n\n", ret );
-            goto exit;
-        }
-        len = sprintf( (char *) buf, "%s\r\n", base );
-        ret = write_ssl_and_get_response( &ssl, buf, len );
-        if( ret < 200 || ret > 399 )
-        {
-            mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_printf(" ok\n" );
-    }
-#endif
-
-    mbedtls_printf( "  > Write MAIL FROM to server:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, "MAIL FROM:<%s>\r\n", opt.mail_from );
-    ret = write_ssl_and_get_response( &ssl, buf, len );
-    if( ret < 200 || ret > 299 )
-    {
-        mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf(" ok\n" );
-
-    mbedtls_printf( "  > Write RCPT TO to server:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, "RCPT TO:<%s>\r\n", opt.mail_to );
-    ret = write_ssl_and_get_response( &ssl, buf, len );
-    if( ret < 200 || ret > 299 )
-    {
-        mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf(" ok\n" );
-
-    mbedtls_printf( "  > Write DATA to server:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, "DATA\r\n" );
-    ret = write_ssl_and_get_response( &ssl, buf, len );
-    if( ret < 300 || ret > 399 )
-    {
-        mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf(" ok\n" );
-
-    mbedtls_printf( "  > Write content to server:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, "From: %s\r\nSubject: mbed TLS Test mail\r\n\r\n"
-            "This is a simple test mail from the "
-            "mbed TLS mail client example.\r\n"
-            "\r\n"
-            "Enjoy!", opt.mail_from );
-    ret = write_ssl_data( &ssl, buf, len );
-
-    len = sprintf( (char *) buf, "\r\n.\r\n");
-    ret = write_ssl_and_get_response( &ssl, buf, len );
-    if( ret < 200 || ret > 299 )
-    {
-        mbedtls_printf( " failed\n  ! server responded with %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf(" ok\n" );
-
-    mbedtls_ssl_close_notify( &ssl );
-
-    exit_code = MBEDTLS_EXIT_SUCCESS;
-
-exit:
-
-    mbedtls_net_free( &server_fd );
-    mbedtls_x509_crt_free( &clicert );
-    mbedtls_x509_crt_free( &cacert );
-    mbedtls_pk_free( &pkey );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-
-#if defined(_WIN32)
-    mbedtls_printf( "  + Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    mbedtls_exit( exit_code );
-}
-#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_ENTROPY_C && MBEDTLS_SSL_TLS_C &&
-          MBEDTLS_SSL_CLI_C && MBEDTLS_NET_C && MBEDTLS_RSA_C **
-          MBEDTLS_CTR_DRBG_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_pthread_server.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_pthread_server.c
deleted file mode 100644
index c4c6ef1..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_pthread_server.c
+++ /dev/null
@@ -1,533 +0,0 @@
-/*
- *  SSL server demonstration program using pthread for handling multiple
- *  clients.
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_fprintf    fprintf
-#define mbedtls_printf     printf
-#define mbedtls_snprintf   snprintf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif
-
-#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_CERTS_C) ||            \
-    !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_SSL_TLS_C) ||         \
-    !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_NET_C) ||             \
-    !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_CTR_DRBG_C) ||            \
-    !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_FS_IO) ||      \
-    !defined(MBEDTLS_THREADING_C) || !defined(MBEDTLS_THREADING_PTHREAD) || \
-    !defined(MBEDTLS_PEM_PARSE_C)
-int main( void )
-{
-    mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_CERTS_C and/or MBEDTLS_ENTROPY_C "
-           "and/or MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or "
-           "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
-           "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C and/or "
-           "MBEDTLS_THREADING_C and/or MBEDTLS_THREADING_PTHREAD "
-           "and/or MBEDTLS_PEM_PARSE_C not defined.\n");
-    mbedtls_exit( 0 );
-}
-#else
-
-#include <stdlib.h>
-#include <string.h>
-
-#if defined(_WIN32)
-#include <windows.h>
-#endif
-
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/error.h"
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-#include "mbedtls/ssl_cache.h"
-#endif
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#include "mbedtls/memory_buffer_alloc.h"
-#endif
-
-
-#define HTTP_RESPONSE \
-    "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
-    "<h2>mbed TLS Test Server</h2>\r\n" \
-    "<p>Successful connection using: %s</p>\r\n"
-
-#define DEBUG_LEVEL 0
-
-#define MAX_NUM_THREADS 5
-
-mbedtls_threading_mutex_t debug_mutex;
-
-static void my_mutexed_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    long int thread_id = (long int) pthread_self();
-
-    mbedtls_mutex_lock( &debug_mutex );
-
-    ((void) level);
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: [ #%ld ] %s",
-                                    file, line, thread_id, str );
-    fflush(  (FILE *) ctx  );
-
-    mbedtls_mutex_unlock( &debug_mutex );
-}
-
-typedef struct {
-    mbedtls_net_context client_fd;
-    int thread_complete;
-    const mbedtls_ssl_config *config;
-} thread_info_t;
-
-typedef struct {
-    int active;
-    thread_info_t   data;
-    pthread_t       thread;
-} pthread_info_t;
-
-static thread_info_t    base_info;
-static pthread_info_t   threads[MAX_NUM_THREADS];
-
-static void *handle_ssl_connection( void *data )
-{
-    int ret, len;
-    thread_info_t *thread_info = (thread_info_t *) data;
-    mbedtls_net_context *client_fd = &thread_info->client_fd;
-    long int thread_id = (long int) pthread_self();
-    unsigned char buf[1024];
-    mbedtls_ssl_context ssl;
-
-    /* Make sure memory references are valid */
-    mbedtls_ssl_init( &ssl );
-
-    mbedtls_printf( "  [ #%ld ]  Setting up SSL/TLS data\n", thread_id );
-
-    /*
-     * 4. Get the SSL context ready
-     */
-    if( ( ret = mbedtls_ssl_setup( &ssl, thread_info->config ) ) != 0 )
-    {
-        mbedtls_printf( "  [ #%ld ]  failed: mbedtls_ssl_setup returned -0x%04x\n",
-                thread_id, ( unsigned int ) -ret );
-        goto thread_exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, client_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
-
-    /*
-     * 5. Handshake
-     */
-    mbedtls_printf( "  [ #%ld ]  Performing the SSL/TLS handshake\n", thread_id );
-
-    while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( "  [ #%ld ]  failed: mbedtls_ssl_handshake returned -0x%04x\n",
-                    thread_id, ( unsigned int ) -ret );
-            goto thread_exit;
-        }
-    }
-
-    mbedtls_printf( "  [ #%ld ]  ok\n", thread_id );
-
-    /*
-     * 6. Read the HTTP Request
-     */
-    mbedtls_printf( "  [ #%ld ]  < Read from client\n", thread_id );
-
-    do
-    {
-        len = sizeof( buf ) - 1;
-        memset( buf, 0, sizeof( buf ) );
-        ret = mbedtls_ssl_read( &ssl, buf, len );
-
-        if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
-            continue;
-
-        if( ret <= 0 )
-        {
-            switch( ret )
-            {
-                case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                    mbedtls_printf( "  [ #%ld ]  connection was closed gracefully\n",
-                            thread_id );
-                    goto thread_exit;
-
-                case MBEDTLS_ERR_NET_CONN_RESET:
-                    mbedtls_printf( "  [ #%ld ]  connection was reset by peer\n",
-                            thread_id );
-                    goto thread_exit;
-
-                default:
-                    mbedtls_printf( "  [ #%ld ]  mbedtls_ssl_read returned -0x%04x\n",
-                            thread_id, ( unsigned int ) -ret );
-                    goto thread_exit;
-            }
-        }
-
-        len = ret;
-        mbedtls_printf( "  [ #%ld ]  %d bytes read\n=====\n%s\n=====\n",
-                thread_id, len, (char *) buf );
-
-        if( ret > 0 )
-            break;
-    }
-    while( 1 );
-
-    /*
-     * 7. Write the 200 Response
-     */
-    mbedtls_printf( "  [ #%ld ]  > Write to client:\n", thread_id );
-
-    len = sprintf( (char *) buf, HTTP_RESPONSE,
-                   mbedtls_ssl_get_ciphersuite( &ssl ) );
-
-    while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
-    {
-        if( ret == MBEDTLS_ERR_NET_CONN_RESET )
-        {
-            mbedtls_printf( "  [ #%ld ]  failed: peer closed the connection\n",
-                    thread_id );
-            goto thread_exit;
-        }
-
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( "  [ #%ld ]  failed: mbedtls_ssl_write returned -0x%04x\n",
-                    thread_id, ( unsigned int ) ret );
-            goto thread_exit;
-        }
-    }
-
-    len = ret;
-    mbedtls_printf( "  [ #%ld ]  %d bytes written\n=====\n%s\n=====\n",
-            thread_id, len, (char *) buf );
-
-    mbedtls_printf( "  [ #%ld ]  . Closing the connection...", thread_id );
-
-    while( ( ret = mbedtls_ssl_close_notify( &ssl ) ) < 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-            ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( "  [ #%ld ]  failed: mbedtls_ssl_close_notify returned -0x%04x\n",
-                    thread_id, ( unsigned int ) ret );
-            goto thread_exit;
-        }
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    ret = 0;
-
-thread_exit:
-
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("  [ #%ld ]  Last error was: -0x%04x - %s\n\n",
-               thread_id, ( unsigned int ) -ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( client_fd );
-    mbedtls_ssl_free( &ssl );
-
-    thread_info->thread_complete = 1;
-
-    return( NULL );
-}
-
-static int thread_create( mbedtls_net_context *client_fd )
-{
-    int ret, i;
-
-    /*
-     * Find in-active or finished thread slot
-     */
-    for( i = 0; i < MAX_NUM_THREADS; i++ )
-    {
-        if( threads[i].active == 0 )
-            break;
-
-        if( threads[i].data.thread_complete == 1 )
-        {
-            mbedtls_printf( "  [ main ]  Cleaning up thread %d\n", i );
-            pthread_join(threads[i].thread, NULL );
-            memset( &threads[i], 0, sizeof(pthread_info_t) );
-            break;
-        }
-    }
-
-    if( i == MAX_NUM_THREADS )
-        return( -1 );
-
-    /*
-     * Fill thread-info for thread
-     */
-    memcpy( &threads[i].data, &base_info, sizeof(base_info) );
-    threads[i].active = 1;
-    memcpy( &threads[i].data.client_fd, client_fd, sizeof( mbedtls_net_context ) );
-
-    if( ( ret = pthread_create( &threads[i].thread, NULL, handle_ssl_connection,
-                                &threads[i].data ) ) != 0 )
-    {
-        return( ret );
-    }
-
-    return( 0 );
-}
-
-int main( void )
-{
-    int ret;
-    mbedtls_net_context listen_fd, client_fd;
-    const char pers[] = "ssl_pthread_server";
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt srvcert;
-    mbedtls_x509_crt cachain;
-    mbedtls_pk_context pkey;
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    unsigned char alloc_buf[100000];
-#endif
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_context cache;
-#endif
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
-#endif
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_init( &cache );
-#endif
-
-    mbedtls_x509_crt_init( &srvcert );
-    mbedtls_x509_crt_init( &cachain );
-
-    mbedtls_ssl_config_init( &conf );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-    memset( threads, 0, sizeof(threads) );
-    mbedtls_net_init( &listen_fd );
-    mbedtls_net_init( &client_fd );
-
-    mbedtls_mutex_init( &debug_mutex );
-
-    base_info.config = &conf;
-
-    /*
-     * We use only a single entropy source that is used in all the threads.
-     */
-    mbedtls_entropy_init( &entropy );
-
-    /*
-     * 1. Load the certificates and private RSA key
-     */
-    mbedtls_printf( "\n  . Loading the server cert. and key..." );
-    fflush( stdout );
-
-    /*
-     * This demonstration program uses embedded test certificates.
-     * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the
-     * server and CA certificates, as well as mbedtls_pk_parse_keyfile().
-     */
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
-                          mbedtls_test_srv_crt_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret = mbedtls_x509_crt_parse( &cachain, (const unsigned char *) mbedtls_test_cas_pem,
-                          mbedtls_test_cas_pem_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_pk_init( &pkey );
-    ret =  mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
-                         mbedtls_test_srv_key_len, NULL, 0 );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_pk_parse_key returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 1b. Seed the random number generator
-     */
-    mbedtls_printf( "  . Seeding the random number generator..." );
-
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        mbedtls_printf( " failed: mbedtls_ctr_drbg_seed returned -0x%04x\n",
-                ( unsigned int ) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 1c. Prepare SSL configuration
-     */
-    mbedtls_printf( "  . Setting up the SSL data...." );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_SERVER,
-                    MBEDTLS_SSL_TRANSPORT_STREAM,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed: mbedtls_ssl_config_defaults returned -0x%04x\n",
-                ( unsigned int ) -ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_mutexed_debug, stdout );
-
-    /* mbedtls_ssl_cache_get() and mbedtls_ssl_cache_set() are thread-safe if
-     * MBEDTLS_THREADING_C is set.
-     */
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_conf_session_cache( &conf, &cache,
-                                   mbedtls_ssl_cache_get,
-                                   mbedtls_ssl_cache_set );
-#endif
-
-    mbedtls_ssl_conf_ca_chain( &conf, &cachain, NULL );
-    if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 2. Setup the listening TCP socket
-     */
-    mbedtls_printf( "  . Bind on https://localhost:4433/ ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "4433", MBEDTLS_NET_PROTO_TCP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_bind returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-reset:
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf( "  [ main ]  Last error was: -0x%04x - %s\n", ( unsigned int ) -ret,
-                        error_buf );
-    }
-#endif
-
-    /*
-     * 3. Wait until a client connects
-     */
-    mbedtls_printf( "  [ main ]  Waiting for a remote connection\n" );
-
-    if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
-                                    NULL, 0, NULL ) ) != 0 )
-    {
-        mbedtls_printf( "  [ main ] failed: mbedtls_net_accept returned -0x%04x\n",
-                        ( unsigned int ) ret );
-        goto exit;
-    }
-
-    mbedtls_printf( "  [ main ]  ok\n" );
-    mbedtls_printf( "  [ main ]  Creating a new thread\n" );
-
-    if( ( ret = thread_create( &client_fd ) ) != 0 )
-    {
-        mbedtls_printf( "  [ main ]  failed: thread_create returned %d\n", ret );
-        mbedtls_net_free( &client_fd );
-        goto reset;
-    }
-
-    ret = 0;
-    goto reset;
-
-exit:
-    mbedtls_x509_crt_free( &srvcert );
-    mbedtls_pk_free( &pkey );
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_free( &cache );
-#endif
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-    mbedtls_ssl_config_free( &conf );
-
-    mbedtls_net_free( &listen_fd );
-
-    mbedtls_mutex_free( &debug_mutex );
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    mbedtls_memory_buffer_alloc_free();
-#endif
-
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    mbedtls_exit( ret );
-}
-
-#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_CERTS_C && MBEDTLS_ENTROPY_C &&
-          MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C &&
-          MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_THREADING_C &&
-          MBEDTLS_THREADING_PTHREAD && MBEDTLS_PEM_PARSE_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_server.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_server.c
deleted file mode 100644
index 0124338..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_server.c
+++ /dev/null
@@ -1,403 +0,0 @@
-/*
- *  SSL server demonstration program
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_time       time
-#define mbedtls_time_t     time_t
-#define mbedtls_fprintf    fprintf
-#define mbedtls_printf     printf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif
-
-#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_CERTS_C) ||    \
-    !defined(MBEDTLS_ENTROPY_C) || !defined(MBEDTLS_SSL_TLS_C) || \
-    !defined(MBEDTLS_SSL_SRV_C) || !defined(MBEDTLS_NET_C) ||     \
-    !defined(MBEDTLS_RSA_C) || !defined(MBEDTLS_CTR_DRBG_C) ||    \
-    !defined(MBEDTLS_X509_CRT_PARSE_C) || !defined(MBEDTLS_FS_IO) || \
-    !defined(MBEDTLS_PEM_PARSE_C)
-int main( void )
-{
-    mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_CERTS_C and/or MBEDTLS_ENTROPY_C "
-           "and/or MBEDTLS_SSL_TLS_C and/or MBEDTLS_SSL_SRV_C and/or "
-           "MBEDTLS_NET_C and/or MBEDTLS_RSA_C and/or "
-           "MBEDTLS_CTR_DRBG_C and/or MBEDTLS_X509_CRT_PARSE_C "
-           "and/or MBEDTLS_PEM_PARSE_C not defined.\n");
-    mbedtls_exit( 0 );
-}
-#else
-
-#include <stdlib.h>
-#include <string.h>
-
-#if defined(_WIN32)
-#include <windows.h>
-#endif
-
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/error.h"
-#include "mbedtls/debug.h"
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-#include "mbedtls/ssl_cache.h"
-#endif
-
-#define HTTP_RESPONSE \
-    "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
-    "<h2>mbed TLS Test Server</h2>\r\n" \
-    "<p>Successful connection using: %s</p>\r\n"
-
-#define DEBUG_LEVEL 0
-
-
-static void my_debug( void *ctx, int level,
-                      const char *file, int line,
-                      const char *str )
-{
-    ((void) level);
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: %s", file, line, str );
-    fflush(  (FILE *) ctx  );
-}
-
-int main( void )
-{
-    int ret, len;
-    mbedtls_net_context listen_fd, client_fd;
-    unsigned char buf[1024];
-    const char *pers = "ssl_server";
-
-    mbedtls_entropy_context entropy;
-    mbedtls_ctr_drbg_context ctr_drbg;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-    mbedtls_x509_crt srvcert;
-    mbedtls_pk_context pkey;
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_context cache;
-#endif
-
-    mbedtls_net_init( &listen_fd );
-    mbedtls_net_init( &client_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_init( &cache );
-#endif
-    mbedtls_x509_crt_init( &srvcert );
-    mbedtls_pk_init( &pkey );
-    mbedtls_entropy_init( &entropy );
-    mbedtls_ctr_drbg_init( &ctr_drbg );
-
-#if defined(MBEDTLS_DEBUG_C)
-    mbedtls_debug_set_threshold( DEBUG_LEVEL );
-#endif
-
-    /*
-     * 1. Load the certificates and private RSA key
-     */
-    mbedtls_printf( "\n  . Loading the server cert. and key..." );
-    fflush( stdout );
-
-    /*
-     * This demonstration program uses embedded test certificates.
-     * Instead, you may want to use mbedtls_x509_crt_parse_file() to read the
-     * server and CA certificates, as well as mbedtls_pk_parse_keyfile().
-     */
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_srv_crt,
-                          mbedtls_test_srv_crt_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret = mbedtls_x509_crt_parse( &srvcert, (const unsigned char *) mbedtls_test_cas_pem,
-                          mbedtls_test_cas_pem_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned %d\n\n", ret );
-        goto exit;
-    }
-
-    ret =  mbedtls_pk_parse_key( &pkey, (const unsigned char *) mbedtls_test_srv_key,
-                         mbedtls_test_srv_key_len, NULL, 0 );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_pk_parse_key returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 2. Setup the listening TCP socket
-     */
-    mbedtls_printf( "  . Bind on https://localhost:4433/ ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_bind( &listen_fd, NULL, "4433", MBEDTLS_NET_PROTO_TCP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_bind returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 3. Seed the RNG
-     */
-    mbedtls_printf( "  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
-                               (const unsigned char *) pers,
-                               strlen( pers ) ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 4. Setup stuff
-     */
-    mbedtls_printf( "  . Setting up the SSL data...." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_SERVER,
-                    MBEDTLS_SSL_TRANSPORT_STREAM,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_rng( &conf, mbedtls_ctr_drbg_random, &ctr_drbg );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_conf_session_cache( &conf, &cache,
-                                   mbedtls_ssl_cache_get,
-                                   mbedtls_ssl_cache_set );
-#endif
-
-    mbedtls_ssl_conf_ca_chain( &conf, srvcert.next, NULL );
-    if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, &pkey ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-        goto exit;
-    }
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-reset:
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &client_fd );
-
-    mbedtls_ssl_session_reset( &ssl );
-
-    /*
-     * 3. Wait until a client connects
-     */
-    mbedtls_printf( "  . Waiting for a remote connection ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
-                                    NULL, 0, NULL ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_accept returned %d\n\n", ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send, mbedtls_net_recv, NULL );
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 5. Handshake
-     */
-    mbedtls_printf( "  . Performing the SSL/TLS handshake..." );
-    fflush( stdout );
-
-    while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned %d\n\n", ret );
-            goto reset;
-        }
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 6. Read the HTTP Request
-     */
-    mbedtls_printf( "  < Read from client:" );
-    fflush( stdout );
-
-    do
-    {
-        len = sizeof( buf ) - 1;
-        memset( buf, 0, sizeof( buf ) );
-        ret = mbedtls_ssl_read( &ssl, buf, len );
-
-        if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
-            continue;
-
-        if( ret <= 0 )
-        {
-            switch( ret )
-            {
-                case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                    mbedtls_printf( " connection was closed gracefully\n" );
-                    break;
-
-                case MBEDTLS_ERR_NET_CONN_RESET:
-                    mbedtls_printf( " connection was reset by peer\n" );
-                    break;
-
-                default:
-                    mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret );
-                    break;
-            }
-
-            break;
-        }
-
-        len = ret;
-        mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
-
-        if( ret > 0 )
-            break;
-    }
-    while( 1 );
-
-    /*
-     * 7. Write the 200 Response
-     */
-    mbedtls_printf( "  > Write to client:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, HTTP_RESPONSE,
-                   mbedtls_ssl_get_ciphersuite( &ssl ) );
-
-    while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
-    {
-        if( ret == MBEDTLS_ERR_NET_CONN_RESET )
-        {
-            mbedtls_printf( " failed\n  ! peer closed the connection\n\n" );
-            goto reset;
-        }
-
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-
-    len = ret;
-    mbedtls_printf( " %d bytes written\n\n%s\n", len, (char *) buf );
-
-    mbedtls_printf( "  . Closing the connection..." );
-
-    while( ( ret = mbedtls_ssl_close_notify( &ssl ) ) < 0 )
-    {
-        if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
-            ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_close_notify returned %d\n\n", ret );
-            goto reset;
-        }
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    ret = 0;
-    goto reset;
-
-exit:
-
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &client_fd );
-    mbedtls_net_free( &listen_fd );
-
-    mbedtls_x509_crt_free( &srvcert );
-    mbedtls_pk_free( &pkey );
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_free( &cache );
-#endif
-    mbedtls_ctr_drbg_free( &ctr_drbg );
-    mbedtls_entropy_free( &entropy );
-
-#if defined(_WIN32)
-    mbedtls_printf( "  Press Enter to exit this program.\n" );
-    fflush( stdout ); getchar();
-#endif
-
-    mbedtls_exit( ret );
-}
-#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_CERTS_C && MBEDTLS_ENTROPY_C &&
-          MBEDTLS_SSL_TLS_C && MBEDTLS_SSL_SRV_C && MBEDTLS_NET_C &&
-          MBEDTLS_RSA_C && MBEDTLS_CTR_DRBG_C && MBEDTLS_X509_CRT_PARSE_C
-          && MBEDTLS_FS_IO && MBEDTLS_PEM_PARSE_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_server2.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_server2.c
deleted file mode 100644
index bd4dbb6..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_server2.c
+++ /dev/null
@@ -1,4051 +0,0 @@
-/*
- *  SSL client with options
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#include "ssl_test_lib.h"
-
-#if defined(MBEDTLS_SSL_TEST_IMPOSSIBLE)
-int main( void )
-{
-    mbedtls_printf( MBEDTLS_SSL_TEST_IMPOSSIBLE );
-    mbedtls_exit( 0 );
-}
-#elif !defined(MBEDTLS_SSL_SRV_C)
-int main( void )
-{
-    mbedtls_printf( "MBEDTLS_SSL_SRV_C not defined.\n" );
-    mbedtls_exit( 0 );
-}
-#else /* !MBEDTLS_SSL_TEST_IMPOSSIBLE && MBEDTLS_SSL_SRV_C */
-
-#include <stdint.h>
-
-#if !defined(_MSC_VER)
-#include <inttypes.h>
-#endif
-
-#if !defined(_WIN32)
-#include <signal.h>
-#endif
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-#include "mbedtls/ssl_cache.h"
-#endif
-
-#if defined(MBEDTLS_SSL_TICKET_C)
-#include "mbedtls/ssl_ticket.h"
-#endif
-
-#if defined(MBEDTLS_SSL_COOKIE_C)
-#include "mbedtls/ssl_cookie.h"
-#endif
-
-#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION) && defined(MBEDTLS_FS_IO)
-#define SNI_OPTION
-#endif
-
-#if defined(_WIN32)
-#include <windows.h>
-#endif
-
-/* Size of memory to be allocated for the heap, when using the library's memory
- * management and MBEDTLS_MEMORY_BUFFER_ALLOC_C is enabled. */
-#define MEMORY_HEAP_SIZE        120000
-
-#define DFL_SERVER_ADDR         NULL
-#define DFL_SERVER_PORT         "4433"
-#define DFL_RESPONSE_SIZE       -1
-#define DFL_DEBUG_LEVEL         0
-#define DFL_NBIO                0
-#define DFL_EVENT               0
-#define DFL_READ_TIMEOUT        0
-#define DFL_CA_FILE             ""
-#define DFL_CA_PATH             ""
-#define DFL_CRT_FILE            ""
-#define DFL_KEY_FILE            ""
-#define DFL_KEY_PWD             ""
-#define DFL_CRT_FILE2           ""
-#define DFL_KEY_FILE2           ""
-#define DFL_KEY_PWD2            ""
-#define DFL_ASYNC_OPERATIONS    "-"
-#define DFL_ASYNC_PRIVATE_DELAY1 ( -1 )
-#define DFL_ASYNC_PRIVATE_DELAY2 ( -1 )
-#define DFL_ASYNC_PRIVATE_ERROR  ( 0 )
-#define DFL_PSK                 ""
-#define DFL_PSK_OPAQUE          0
-#define DFL_PSK_LIST_OPAQUE     0
-#define DFL_PSK_IDENTITY        "Client_identity"
-#define DFL_ECJPAKE_PW          NULL
-#define DFL_PSK_LIST            NULL
-#define DFL_FORCE_CIPHER        0
-#define DFL_VERSION_SUITES      NULL
-#define DFL_RENEGOTIATION       MBEDTLS_SSL_RENEGOTIATION_DISABLED
-#define DFL_ALLOW_LEGACY        -2
-#define DFL_RENEGOTIATE         0
-#define DFL_RENEGO_DELAY        -2
-#define DFL_RENEGO_PERIOD       ( (uint64_t)-1 )
-#define DFL_EXCHANGES           1
-#define DFL_MIN_VERSION         -1
-#define DFL_MAX_VERSION         -1
-#define DFL_ARC4                -1
-#define DFL_SHA1                -1
-#define DFL_CID_ENABLED         0
-#define DFL_CID_VALUE           ""
-#define DFL_CID_ENABLED_RENEGO  -1
-#define DFL_CID_VALUE_RENEGO    NULL
-#define DFL_AUTH_MODE           -1
-#define DFL_CERT_REQ_CA_LIST    MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED
-#define DFL_MFL_CODE            MBEDTLS_SSL_MAX_FRAG_LEN_NONE
-#define DFL_TRUNC_HMAC          -1
-#define DFL_TICKETS             MBEDTLS_SSL_SESSION_TICKETS_ENABLED
-#define DFL_TICKET_TIMEOUT      86400
-#define DFL_CACHE_MAX           -1
-#define DFL_CACHE_TIMEOUT       -1
-#define DFL_SNI                 NULL
-#define DFL_ALPN_STRING         NULL
-#define DFL_CURVES              NULL
-#define DFL_DHM_FILE            NULL
-#define DFL_TRANSPORT           MBEDTLS_SSL_TRANSPORT_STREAM
-#define DFL_COOKIES             1
-#define DFL_ANTI_REPLAY         -1
-#define DFL_HS_TO_MIN           0
-#define DFL_HS_TO_MAX           0
-#define DFL_DTLS_MTU            -1
-#define DFL_BADMAC_LIMIT        -1
-#define DFL_DGRAM_PACKING        1
-#define DFL_EXTENDED_MS         -1
-#define DFL_ETM                 -1
-#define DFL_SERIALIZE           0
-#define DFL_CONTEXT_FILE        ""
-#define DFL_EXTENDED_MS_ENFORCE -1
-#define DFL_CA_CALLBACK         0
-#define DFL_EAP_TLS             0
-#define DFL_REPRODUCIBLE        0
-#define DFL_NSS_KEYLOG          0
-#define DFL_NSS_KEYLOG_FILE     NULL
-#define DFL_QUERY_CONFIG_MODE   0
-#define DFL_USE_SRTP            0
-#define DFL_SRTP_FORCE_PROFILE  0
-#define DFL_SRTP_SUPPORT_MKI    0
-
-#define LONG_RESPONSE "<p>01-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n" \
-    "02-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n"  \
-    "03-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n"  \
-    "04-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n"  \
-    "05-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n"  \
-    "06-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah\r\n"  \
-    "07-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah-blah</p>\r\n"
-
-/* Uncomment LONG_RESPONSE at the end of HTTP_RESPONSE to test sending longer
- * packets (for fragmentation purposes) */
-#define HTTP_RESPONSE \
-    "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" \
-    "<h2>mbed TLS Test Server</h2>\r\n" \
-    "<p>Successful connection using: %s</p>\r\n" // LONG_RESPONSE
-
-/*
- * Size of the basic I/O buffer. Able to hold our default response.
- *
- * You will need to adapt the mbedtls_ssl_get_bytes_avail() test in ssl-opt.sh
- * if you change this value to something outside the range <= 100 or > 500
- */
-#define DFL_IO_BUF_LEN      200
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_FS_IO)
-#define USAGE_IO \
-    "    ca_file=%%s          The single file containing the top-level CA(s) you fully trust\n" \
-    "                        default: \"\" (pre-loaded)\n" \
-    "                        use \"none\" to skip loading any top-level CAs.\n" \
-    "    ca_path=%%s          The path containing the top-level CA(s) you fully trust\n" \
-    "                        default: \"\" (pre-loaded) (overrides ca_file)\n" \
-    "                        use \"none\" to skip loading any top-level CAs.\n" \
-    "    crt_file=%%s         Your own cert and chain (in bottom to top order, top may be omitted)\n" \
-    "                        default: see note after key_file2\n" \
-    "    key_file=%%s         default: see note after key_file2\n" \
-    "    key_pwd=%%s          Password for key specified by key_file argument\n"\
-    "                        default: none\n" \
-    "    crt_file2=%%s        Your second cert and chain (in bottom to top order, top may be omitted)\n" \
-    "                        default: see note after key_file2\n" \
-    "    key_file2=%%s        default: see note below\n" \
-    "                        note: if neither crt_file/key_file nor crt_file2/key_file2 are used,\n" \
-    "                              preloaded certificate(s) and key(s) are used if available\n" \
-    "    key_pwd2=%%s         Password for key specified by key_file2 argument\n"\
-    "                        default: none\n" \
-    "    dhm_file=%%s        File containing Diffie-Hellman parameters\n" \
-    "                       default: preloaded parameters\n"
-#else
-#define USAGE_IO \
-    "\n"                                                    \
-    "    No file operations available (MBEDTLS_FS_IO not defined)\n" \
-    "\n"
-#endif /* MBEDTLS_FS_IO */
-#else
-#define USAGE_IO ""
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-#define USAGE_SSL_ASYNC \
-    "    async_operations=%%c...   d=decrypt, s=sign (default: -=off)\n" \
-    "    async_private_delay1=%%d  Asynchronous delay for key_file or preloaded key\n" \
-    "    async_private_delay2=%%d  Asynchronous delay for key_file2 and sni\n" \
-    "                              default: -1 (not asynchronous)\n" \
-    "    async_private_error=%%d   Async callback error injection (default=0=none,\n" \
-    "                              1=start, 2=cancel, 3=resume, negative=first time only)"
-#else
-#define USAGE_SSL_ASYNC ""
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-#define USAGE_CID \
-    "    cid=%%d             Disable (0) or enable (1) the use of the DTLS Connection ID extension.\n" \
-    "                       default: 0 (disabled)\n"     \
-    "    cid_renego=%%d      Disable (0) or enable (1) the use of the DTLS Connection ID extension during renegotiation.\n" \
-    "                       default: same as 'cid' parameter\n"     \
-    "    cid_val=%%s          The CID to use for incoming messages (in hex, without 0x).\n"  \
-    "                        default: \"\"\n" \
-    "    cid_val_renego=%%s   The CID to use for incoming messages (in hex, without 0x) after renegotiation.\n"  \
-    "                        default: same as 'cid_val' parameter\n"
-#else /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-#define USAGE_CID ""
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-#define USAGE_PSK_RAW                                               \
-    "    psk=%%s              default: \"\" (disabled)\n"     \
-    "                          The PSK values are in hex, without 0x.\n" \
-    "    psk_list=%%s         default: \"\"\n"                          \
-    "                          A list of (PSK identity, PSK value) pairs.\n" \
-    "                          The PSK values are in hex, without 0x.\n" \
-    "                          id1,psk1[,id2,psk2[,...]]\n"             \
-    "    psk_identity=%%s     default: \"Client_identity\"\n"
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-#define USAGE_PSK_SLOT                          \
-    "    psk_opaque=%%d       default: 0 (don't use opaque static PSK)\n"     \
-    "                          Enable this to store the PSK configured through command line\n" \
-    "                          parameter `psk` in a PSA-based key slot.\n" \
-    "                          Note: Currently only supported in conjunction with\n"                  \
-    "                          the use of min_version to force TLS 1.2 and force_ciphersuite \n"      \
-    "                          to force a particular PSK-only ciphersuite.\n"                         \
-    "                          Note: This is to test integration of PSA-based opaque PSKs with\n"     \
-    "                          Mbed TLS only. Production systems are likely to configure Mbed TLS\n"  \
-    "                          with prepopulated key slots instead of importing raw key material.\n" \
-    "    psk_list_opaque=%%d  default: 0 (don't use opaque dynamic PSKs)\n"     \
-    "                          Enable this to store the list of dynamically chosen PSKs configured\n" \
-    "                          through the command line parameter `psk_list` in PSA-based key slots.\n" \
-    "                          Note: Currently only supported in conjunction with\n" \
-    "                          the use of min_version to force TLS 1.2 and force_ciphersuite \n" \
-    "                          to force a particular PSK-only ciphersuite.\n" \
-    "                          Note: This is to test integration of PSA-based opaque PSKs with\n" \
-    "                          Mbed TLS only. Production systems are likely to configure Mbed TLS\n" \
-    "                          with prepopulated key slots instead of importing raw key material.\n"
-#else
-#define USAGE_PSK_SLOT ""
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-#define USAGE_PSK USAGE_PSK_RAW USAGE_PSK_SLOT
-#else
-#define USAGE_PSK ""
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-#define USAGE_CA_CALLBACK                       \
-    "   ca_callback=%%d       default: 0 (disabled)\n"      \
-    "                         Enable this to use the trusted certificate callback function\n"
-#else
-#define USAGE_CA_CALLBACK ""
-#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-#define USAGE_TICKETS                                       \
-    "    tickets=%%d          default: 1 (enabled)\n"       \
-    "    ticket_timeout=%%d   default: 86400 (one day)\n"
-#else
-#define USAGE_TICKETS ""
-#endif /* MBEDTLS_SSL_SESSION_TICKETS */
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-#define USAGE_EAP_TLS                                       \
-    "    eap_tls=%%d          default: 0 (disabled)\n"
-#define USAGE_NSS_KEYLOG                                    \
-    "    nss_keylog=%%d          default: 0 (disabled)\n"   \
-    "                             This cannot be used with eap_tls=1\n"
-#define USAGE_NSS_KEYLOG_FILE                               \
-    "    nss_keylog_file=%%s\n"
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-#define USAGE_SRTP \
-    "    use_srtp=%%d         default: 0 (disabled)\n" \
-    "    srtp_force_profile=%%d  default: 0 (all enabled)\n"   \
-    "                        available profiles:\n"       \
-    "                        1 - SRTP_AES128_CM_HMAC_SHA1_80\n"  \
-    "                        2 - SRTP_AES128_CM_HMAC_SHA1_32\n"  \
-    "                        3 - SRTP_NULL_HMAC_SHA1_80\n"       \
-    "                        4 - SRTP_NULL_HMAC_SHA1_32\n"       \
-    "    support_mki=%%d     default: 0 (not supported)\n"
-#else /* MBEDTLS_SSL_DTLS_SRTP */
-#define USAGE_SRTP ""
-#endif
-#else /* MBEDTLS_SSL_EXPORT_KEYS */
-#define USAGE_EAP_TLS ""
-#define USAGE_NSS_KEYLOG ""
-#define USAGE_NSS_KEYLOG_FILE ""
-#define USAGE_SRTP ""
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-#define USAGE_CACHE                                             \
-    "    cache_max=%%d        default: cache default (50)\n"    \
-    "    cache_timeout=%%d    default: cache default (1d)\n"
-#else
-#define USAGE_CACHE ""
-#endif /* MBEDTLS_SSL_CACHE_C */
-
-#if defined(SNI_OPTION)
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-#define SNI_CRL              ",crl"
-#else
-#define SNI_CRL              ""
-#endif
-
-#define USAGE_SNI                                                           \
-    "    sni=%%s              name1,cert1,key1,ca1"SNI_CRL",auth1[,...]\n"  \
-    "                        default: disabled\n"
-#else
-#define USAGE_SNI ""
-#endif /* SNI_OPTION */
-
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-#define USAGE_MAX_FRAG_LEN                                      \
-    "    max_frag_len=%%d     default: 16384 (tls default)\n"   \
-    "                        options: 512, 1024, 2048, 4096\n"
-#else
-#define USAGE_MAX_FRAG_LEN ""
-#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
-
-#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-#define USAGE_TRUNC_HMAC \
-    "    trunc_hmac=%%d       default: library default\n"
-#else
-#define USAGE_TRUNC_HMAC ""
-#endif
-
-#if defined(MBEDTLS_SSL_ALPN)
-#define USAGE_ALPN \
-    "    alpn=%%s             default: \"\" (disabled)\n"   \
-    "                        example: spdy/1,http/1.1\n"
-#else
-#define USAGE_ALPN ""
-#endif /* MBEDTLS_SSL_ALPN */
-
-#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
-#define USAGE_COOKIES \
-    "    cookies=0/1/-1      default: 1 (enabled)\n"        \
-    "                        0: disabled, -1: library default (broken)\n"
-#else
-#define USAGE_COOKIES ""
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
-#define USAGE_ANTI_REPLAY \
-    "    anti_replay=0/1     default: (library default: enabled)\n"
-#else
-#define USAGE_ANTI_REPLAY ""
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
-#define USAGE_BADMAC_LIMIT \
-    "    badmac_limit=%%d     default: (library default: disabled)\n"
-#else
-#define USAGE_BADMAC_LIMIT ""
-#endif
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-#define USAGE_DTLS \
-    "    dtls=%%d             default: 0 (TLS)\n"                           \
-    "    hs_timeout=%%d-%%d    default: (library default: 1000-60000)\n"    \
-    "                        range of DTLS handshake timeouts in millisecs\n" \
-    "    mtu=%%d              default: (library default: unlimited)\n"  \
-    "    dgram_packing=%%d    default: 1 (allowed)\n"                   \
-    "                        allow or forbid packing of multiple\n" \
-    "                        records within a single datgram.\n"
-#else
-#define USAGE_DTLS ""
-#endif
-
-#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-#define USAGE_EMS \
-    "    extended_ms=0/1     default: (library default: on)\n"
-#else
-#define USAGE_EMS ""
-#endif
-
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-#define USAGE_ETM \
-    "    etm=0/1             default: (library default: on)\n"
-#else
-#define USAGE_ETM ""
-#endif
-
-#define USAGE_REPRODUCIBLE \
-    "    reproducible=0/1     default: 0 (disabled)\n"
-
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-#define USAGE_RENEGO \
-    "    renegotiation=%%d    default: 0 (disabled)\n"      \
-    "    renegotiate=%%d      default: 0 (disabled)\n"      \
-    "    renego_delay=%%d     default: -2 (library default)\n" \
-    "    renego_period=%%d    default: (2^64 - 1 for TLS, 2^48 - 1 for DTLS)\n"
-#else
-#define USAGE_RENEGO ""
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-#define USAGE_ECJPAKE \
-    "    ecjpake_pw=%%s       default: none (disabled)\n"
-#else
-#define USAGE_ECJPAKE ""
-#endif
-
-#if defined(MBEDTLS_ECP_C)
-#define USAGE_CURVES \
-    "    curves=a,b,c,d      default: \"default\" (library default)\n"  \
-    "                        example: \"secp521r1,brainpoolP512r1\"\n"  \
-    "                        - use \"none\" for empty list\n"           \
-    "                        - see mbedtls_ecp_curve_list()\n"          \
-    "                          for acceptable curve names\n"
-#else
-#define USAGE_CURVES ""
-#endif
-
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-#define USAGE_SERIALIZATION \
-    "    serialize=%%d        default: 0 (do not serialize/deserialize)\n"     \
-    "                        options: 1 (serialize)\n"                         \
-    "                                 2 (serialize with re-initialization)\n"  \
-    "    context_file=%%s     The file path to write a serialized connection\n"\
-    "                        in the form of base64 code (serialize option\n"   \
-    "                        must be set)\n"                                   \
-    "                         default: \"\" (do nothing)\n"                    \
-    "                         option: a file path\n"
-#else
-#define USAGE_SERIALIZATION ""
-#endif
-
-/* USAGE is arbitrarily split to stay under the portable string literal
- * length limit: 4095 bytes in C99. */
-#define USAGE1 \
-    "\n usage: ssl_server2 param=<>...\n"                   \
-    "\n acceptable parameters:\n"                           \
-    "    server_addr=%%s      default: (all interfaces)\n"  \
-    "    server_port=%%d      default: 4433\n"              \
-    "    debug_level=%%d      default: 0 (disabled)\n"      \
-    "    buffer_size=%%d      default: 200 \n" \
-    "                         (minimum: 1, max: 16385)\n" \
-    "    response_size=%%d    default: about 152 (basic response)\n" \
-    "                          (minimum: 0, max: 16384)\n" \
-    "                          increases buffer_size if bigger\n"\
-    "    nbio=%%d             default: 0 (blocking I/O)\n"  \
-    "                        options: 1 (non-blocking), 2 (added delays)\n" \
-    "    event=%%d            default: 0 (loop)\n"                            \
-    "                        options: 1 (level-triggered, implies nbio=1),\n" \
-    "    read_timeout=%%d     default: 0 ms (no timeout)\n"    \
-    "\n"                                                    \
-    USAGE_DTLS                                              \
-    USAGE_SRTP                                              \
-    USAGE_COOKIES                                           \
-    USAGE_ANTI_REPLAY                                       \
-    USAGE_BADMAC_LIMIT                                      \
-    "\n"
-#define USAGE2 \
-    "    auth_mode=%%s        default: (library default: none)\n"      \
-    "                        options: none, optional, required\n" \
-    "    cert_req_ca_list=%%d default: 1 (send ca list)\n"  \
-    "                        options: 1 (send ca list), 0 (don't send)\n" \
-    USAGE_IO                                                \
-    "\n"                                                    \
-    USAGE_PSK                                               \
-    USAGE_CA_CALLBACK                                       \
-    USAGE_ECJPAKE                                           \
-    "\n"
-#define USAGE3 \
-    "    allow_legacy=%%d     default: (library default: no)\n"      \
-    USAGE_RENEGO                                            \
-    "    exchanges=%%d        default: 1\n"                 \
-    "\n"                                                    \
-    USAGE_TICKETS                                           \
-    USAGE_EAP_TLS                                           \
-    USAGE_REPRODUCIBLE                                      \
-    USAGE_NSS_KEYLOG                                        \
-    USAGE_NSS_KEYLOG_FILE                                   \
-    USAGE_CACHE                                             \
-    USAGE_MAX_FRAG_LEN                                      \
-    USAGE_TRUNC_HMAC                                        \
-    USAGE_ALPN                                              \
-    USAGE_EMS                                               \
-    USAGE_ETM                                               \
-    USAGE_CURVES                                            \
-    "\n"
-#define USAGE4 \
-    USAGE_SSL_ASYNC                                         \
-    USAGE_SNI                                               \
-    "    arc4=%%d             default: (library default: 0)\n" \
-    "    allow_sha1=%%d       default: 0\n"                             \
-    "    min_version=%%s      default: (library default: tls1)\n"       \
-    "    max_version=%%s      default: (library default: tls1_2)\n"     \
-    "    force_version=%%s    default: \"\" (none)\n"       \
-    "                        options: ssl3, tls1, tls1_1, tls1_2, dtls1, dtls1_2\n" \
-    "\n"                                                                \
-    "    version_suites=a,b,c,d      per-version ciphersuites\n"        \
-    "                                in order from ssl3 to tls1_2\n"    \
-    "                                default: all enabled\n"            \
-    "    force_ciphersuite=<name>    default: all enabled\n"            \
-    "    query_config=<name>         return 0 if the specified\n"       \
-    "                                configuration macro is defined and 1\n"  \
-    "                                otherwise. The expansion of the macro\n" \
-    "                                is printed if it is defined\n"     \
-    USAGE_SERIALIZATION                                     \
-    " acceptable ciphersuite names:\n"
-
-#define ALPN_LIST_SIZE  10
-#define CURVE_LIST_SIZE 20
-
-#define PUT_UINT64_BE(out_be,in_le,i)                                   \
-{                                                                       \
-    (out_be)[(i) + 0] = (unsigned char)( ( (in_le) >> 56 ) & 0xFF );    \
-    (out_be)[(i) + 1] = (unsigned char)( ( (in_le) >> 48 ) & 0xFF );    \
-    (out_be)[(i) + 2] = (unsigned char)( ( (in_le) >> 40 ) & 0xFF );    \
-    (out_be)[(i) + 3] = (unsigned char)( ( (in_le) >> 32 ) & 0xFF );    \
-    (out_be)[(i) + 4] = (unsigned char)( ( (in_le) >> 24 ) & 0xFF );    \
-    (out_be)[(i) + 5] = (unsigned char)( ( (in_le) >> 16 ) & 0xFF );    \
-    (out_be)[(i) + 6] = (unsigned char)( ( (in_le) >> 8  ) & 0xFF );    \
-    (out_be)[(i) + 7] = (unsigned char)( ( (in_le) >> 0  ) & 0xFF );    \
-}
-
-
-/*
- * global options
- */
-struct options
-{
-    const char *server_addr;    /* address on which the ssl service runs    */
-    const char *server_port;    /* port on which the ssl service runs       */
-    int debug_level;            /* level of debugging                       */
-    int nbio;                   /* should I/O be blocking?                  */
-    int event;                  /* loop or event-driven IO? level or edge triggered? */
-    uint32_t read_timeout;      /* timeout on mbedtls_ssl_read() in milliseconds    */
-    int response_size;          /* pad response with header to requested size */
-    uint16_t buffer_size;       /* IO buffer size */
-    const char *ca_file;        /* the file with the CA certificate(s)      */
-    const char *ca_path;        /* the path with the CA certificate(s) reside */
-    const char *crt_file;       /* the file with the server certificate     */
-    const char *key_file;       /* the file with the server key             */
-    const char *key_pwd;        /* the password for the server key          */
-    const char *crt_file2;      /* the file with the 2nd server certificate */
-    const char *key_file2;      /* the file with the 2nd server key         */
-    const char *key_pwd2;       /* the password for the 2nd server key      */
-    const char *async_operations; /* supported SSL asynchronous operations  */
-    int async_private_delay1;   /* number of times f_async_resume needs to be called for key 1, or -1 for no async */
-    int async_private_delay2;   /* number of times f_async_resume needs to be called for key 2, or -1 for no async */
-    int async_private_error;    /* inject error in async private callback */
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    int psk_opaque;
-    int psk_list_opaque;
-#endif
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    int ca_callback;            /* Use callback for trusted certificate list */
-#endif
-    const char *psk;            /* the pre-shared key                       */
-    const char *psk_identity;   /* the pre-shared key identity              */
-    char *psk_list;             /* list of PSK id/key pairs for callback    */
-    const char *ecjpake_pw;     /* the EC J-PAKE password                   */
-    int force_ciphersuite[2];   /* protocol/ciphersuite to use, or all      */
-    const char *version_suites; /* per-version ciphersuites                 */
-    int renegotiation;          /* enable / disable renegotiation           */
-    int allow_legacy;           /* allow legacy renegotiation               */
-    int renegotiate;            /* attempt renegotiation?                   */
-    int renego_delay;           /* delay before enforcing renegotiation     */
-    uint64_t renego_period;     /* period for automatic renegotiation       */
-    int exchanges;              /* number of data exchanges                 */
-    int min_version;            /* minimum protocol version accepted        */
-    int max_version;            /* maximum protocol version accepted        */
-    int arc4;                   /* flag for arc4 suites support             */
-    int allow_sha1;             /* flag for SHA-1 support                   */
-    int auth_mode;              /* verify mode for connection               */
-    int cert_req_ca_list;       /* should we send the CA list?              */
-    unsigned char mfl_code;     /* code for maximum fragment length         */
-    int trunc_hmac;             /* accept truncated hmac?                   */
-    int tickets;                /* enable / disable session tickets         */
-    int ticket_timeout;         /* session ticket lifetime                  */
-    int cache_max;              /* max number of session cache entries      */
-    int cache_timeout;          /* expiration delay of session cache entries */
-    char *sni;                  /* string describing sni information        */
-    const char *curves;         /* list of supported elliptic curves        */
-    const char *alpn_string;    /* ALPN supported protocols                 */
-    const char *dhm_file;       /* the file with the DH parameters          */
-    int extended_ms;            /* allow negotiation of extended MS?        */
-    int etm;                    /* allow negotiation of encrypt-then-MAC?   */
-    int transport;              /* TLS or DTLS?                             */
-    int cookies;                /* Use cookies for DTLS? -1 to break them   */
-    int anti_replay;            /* Use anti-replay for DTLS? -1 for default */
-    uint32_t hs_to_min;         /* Initial value of DTLS handshake timer    */
-    uint32_t hs_to_max;         /* Max value of DTLS handshake timer        */
-    int dtls_mtu;               /* UDP Maximum tranport unit for DTLS       */
-    int dgram_packing;          /* allow/forbid datagram packing            */
-    int badmac_limit;           /* Limit of records with bad MAC            */
-    int eap_tls;                /* derive EAP-TLS keying material?          */
-    int nss_keylog;             /* export NSS key log material              */
-    const char *nss_keylog_file; /* NSS key log file                        */
-    int cid_enabled;            /* whether to use the CID extension or not  */
-    int cid_enabled_renego;     /* whether to use the CID extension or not
-                                 * during renegotiation                     */
-    const char *cid_val;        /* the CID to use for incoming messages     */
-    int serialize;              /* serialize/deserialize connection         */
-    const char *context_file;   /* the file to write a serialized connection
-                                 * in the form of base64 code (serialize
-                                 * option must be set)                      */
-    const char *cid_val_renego; /* the CID to use for incoming messages
-                                 * after renegotiation                      */
-    int reproducible;           /* make communication reproducible          */
-    int query_config_mode;      /* whether to read config                   */
-    int use_srtp;               /* Support SRTP                             */
-    int force_srtp_profile;     /* SRTP protection profile to use or all    */
-    int support_mki;            /* The dtls mki mki support                 */
-} opt;
-
-#include "ssl_test_common_source.c"
-
-/*
- * Return authmode from string, or -1 on error
- */
-static int get_auth_mode( const char *s )
-{
-    if( strcmp( s, "none" ) == 0 )
-        return( MBEDTLS_SSL_VERIFY_NONE );
-    if( strcmp( s, "optional" ) == 0 )
-        return( MBEDTLS_SSL_VERIFY_OPTIONAL );
-    if( strcmp( s, "required" ) == 0 )
-        return( MBEDTLS_SSL_VERIFY_REQUIRED );
-
-    return( -1 );
-}
-
-/*
- * Used by sni_parse and psk_parse to handle coma-separated lists
- */
-#define GET_ITEM( dst )         \
-    do                          \
-    {                           \
-        (dst) = p;              \
-        while( *p != ',' )      \
-            if( ++p > end )     \
-                goto error;     \
-        *p++ = '\0';            \
-    } while( 0 )
-
-#if defined(SNI_OPTION)
-typedef struct _sni_entry sni_entry;
-
-struct _sni_entry {
-    const char *name;
-    mbedtls_x509_crt *cert;
-    mbedtls_pk_context *key;
-    mbedtls_x509_crt* ca;
-    mbedtls_x509_crl* crl;
-    int authmode;
-    sni_entry *next;
-};
-
-void sni_free( sni_entry *head )
-{
-    sni_entry *cur = head, *next;
-
-    while( cur != NULL )
-    {
-        mbedtls_x509_crt_free( cur->cert );
-        mbedtls_free( cur->cert );
-
-        mbedtls_pk_free( cur->key );
-        mbedtls_free( cur->key );
-
-        mbedtls_x509_crt_free( cur->ca );
-        mbedtls_free( cur->ca );
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-        mbedtls_x509_crl_free( cur->crl );
-        mbedtls_free( cur->crl );
-#endif
-        next = cur->next;
-        mbedtls_free( cur );
-        cur = next;
-    }
-}
-
-/*
- * Parse a string of sextuples name1,crt1,key1,ca1,crl1,auth1[,...]
- * into a usable sni_entry list. For ca1, crl1, auth1, the special value
- * '-' means unset. If ca1 is unset, then crl1 is ignored too.
- *
- * Modifies the input string! This is not production quality!
- */
-sni_entry *sni_parse( char *sni_string )
-{
-    sni_entry *cur = NULL, *new = NULL;
-    char *p = sni_string;
-    char *end = p;
-    char *crt_file, *key_file, *ca_file, *auth_str;
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-    char *crl_file;
-#endif
-
-    while( *end != '\0' )
-        ++end;
-    *end = ',';
-
-    while( p <= end )
-    {
-        if( ( new = mbedtls_calloc( 1, sizeof( sni_entry ) ) ) == NULL )
-        {
-            sni_free( cur );
-            return( NULL );
-        }
-
-        GET_ITEM( new->name );
-        GET_ITEM( crt_file );
-        GET_ITEM( key_file );
-        GET_ITEM( ca_file );
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-        GET_ITEM( crl_file );
-#endif
-        GET_ITEM( auth_str );
-
-        if( ( new->cert = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ) ) == NULL ||
-            ( new->key = mbedtls_calloc( 1, sizeof( mbedtls_pk_context ) ) ) == NULL )
-            goto error;
-
-        mbedtls_x509_crt_init( new->cert );
-        mbedtls_pk_init( new->key );
-
-        if( mbedtls_x509_crt_parse_file( new->cert, crt_file ) != 0 ||
-            mbedtls_pk_parse_keyfile( new->key, key_file, "" ) != 0 )
-            goto error;
-
-        if( strcmp( ca_file, "-" ) != 0 )
-        {
-            if( ( new->ca = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) ) ) == NULL )
-                goto error;
-
-            mbedtls_x509_crt_init( new->ca );
-
-            if( mbedtls_x509_crt_parse_file( new->ca, ca_file ) != 0 )
-                goto error;
-        }
-
-#if defined(MBEDTLS_X509_CRL_PARSE_C)
-        if( strcmp( crl_file, "-" ) != 0 )
-        {
-            if( ( new->crl = mbedtls_calloc( 1, sizeof( mbedtls_x509_crl ) ) ) == NULL )
-                goto error;
-
-            mbedtls_x509_crl_init( new->crl );
-
-            if( mbedtls_x509_crl_parse_file( new->crl, crl_file ) != 0 )
-                goto error;
-        }
-#endif
-
-        if( strcmp( auth_str, "-" ) != 0 )
-        {
-            if( ( new->authmode = get_auth_mode( auth_str ) ) < 0 )
-                goto error;
-        }
-        else
-            new->authmode = DFL_AUTH_MODE;
-
-        new->next = cur;
-        cur = new;
-    }
-
-    return( cur );
-
-error:
-    sni_free( new );
-    sni_free( cur );
-    return( NULL );
-}
-
-/*
- * SNI callback.
- */
-int sni_callback( void *p_info, mbedtls_ssl_context *ssl,
-                  const unsigned char *name, size_t name_len )
-{
-    const sni_entry *cur = (const sni_entry *) p_info;
-
-    while( cur != NULL )
-    {
-        if( name_len == strlen( cur->name ) &&
-            memcmp( name, cur->name, name_len ) == 0 )
-        {
-            if( cur->ca != NULL )
-                mbedtls_ssl_set_hs_ca_chain( ssl, cur->ca, cur->crl );
-
-            if( cur->authmode != DFL_AUTH_MODE )
-                mbedtls_ssl_set_hs_authmode( ssl, cur->authmode );
-
-            return( mbedtls_ssl_set_hs_own_cert( ssl, cur->cert, cur->key ) );
-        }
-
-        cur = cur->next;
-    }
-
-    return( -1 );
-}
-
-#endif /* SNI_OPTION */
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-
-typedef struct _psk_entry psk_entry;
-
-struct _psk_entry
-{
-    const char *name;
-    size_t key_len;
-    unsigned char key[MBEDTLS_PSK_MAX_LEN];
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_key_id_t slot;
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-    psk_entry *next;
-};
-
-/*
- * Free a list of psk_entry's
- */
-int psk_free( psk_entry *head )
-{
-    psk_entry *next;
-
-    while( head != NULL )
-    {
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        psa_status_t status;
-        psa_key_id_t const slot = head->slot;
-
-        if( slot != 0 )
-        {
-            status = psa_destroy_key( slot );
-            if( status != PSA_SUCCESS )
-                return( status );
-        }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-        next = head->next;
-        mbedtls_free( head );
-        head = next;
-    }
-
-    return( 0 );
-}
-
-/*
- * Parse a string of pairs name1,key1[,name2,key2[,...]]
- * into a usable psk_entry list.
- *
- * Modifies the input string! This is not production quality!
- */
-psk_entry *psk_parse( char *psk_string )
-{
-    psk_entry *cur = NULL, *new = NULL;
-    char *p = psk_string;
-    char *end = p;
-    char *key_hex;
-
-    while( *end != '\0' )
-        ++end;
-    *end = ',';
-
-    while( p <= end )
-    {
-        if( ( new = mbedtls_calloc( 1, sizeof( psk_entry ) ) ) == NULL )
-            goto error;
-
-        memset( new, 0, sizeof( psk_entry ) );
-
-        GET_ITEM( new->name );
-        GET_ITEM( key_hex );
-
-        if( mbedtls_test_unhexify( new->key, MBEDTLS_PSK_MAX_LEN,
-                                   key_hex, &new->key_len ) != 0 )
-            goto error;
-
-        new->next = cur;
-        cur = new;
-    }
-
-    return( cur );
-
-error:
-    psk_free( new );
-    psk_free( cur );
-    return( 0 );
-}
-
-/*
- * PSK callback
- */
-int psk_callback( void *p_info, mbedtls_ssl_context *ssl,
-                  const unsigned char *name, size_t name_len )
-{
-    psk_entry *cur = (psk_entry *) p_info;
-
-    while( cur != NULL )
-    {
-        if( name_len == strlen( cur->name ) &&
-            memcmp( name, cur->name, name_len ) == 0 )
-        {
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-            if( cur->slot != 0 )
-                return( mbedtls_ssl_set_hs_psk_opaque( ssl, cur->slot ) );
-            else
-#endif
-            return( mbedtls_ssl_set_hs_psk( ssl, cur->key, cur->key_len ) );
-        }
-
-        cur = cur->next;
-    }
-
-    return( -1 );
-}
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-
-static mbedtls_net_context listen_fd, client_fd;
-
-/* Interruption handler to ensure clean exit (for valgrind testing) */
-#if !defined(_WIN32)
-static int received_sigterm = 0;
-void term_handler( int sig )
-{
-    ((void) sig);
-    received_sigterm = 1;
-    mbedtls_net_free( &listen_fd ); /* causes mbedtls_net_accept() to abort */
-    mbedtls_net_free( &client_fd ); /* causes net_read() to abort */
-}
-#endif
-
-/** Return true if \p ret is a status code indicating that there is an
- * operation in progress on an SSL connection, and false if it indicates
- * success or a fatal error.
- *
- * The possible operations in progress are:
- *
- * - A read, when the SSL input buffer does not contain a full message.
- * - A write, when the SSL output buffer contains some data that has not
- *   been sent over the network yet.
- * - An asynchronous callback that has not completed yet. */
-static int mbedtls_status_is_ssl_in_progress( int ret )
-{
-    return( ret == MBEDTLS_ERR_SSL_WANT_READ ||
-            ret == MBEDTLS_ERR_SSL_WANT_WRITE ||
-            ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
-}
-
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-typedef struct
-{
-    mbedtls_x509_crt *cert; /*!< Certificate corresponding to the key */
-    mbedtls_pk_context *pk; /*!< Private key */
-    unsigned delay; /*!< Number of resume steps to go through */
-    unsigned pk_owned : 1; /*!< Whether to free the pk object on exit */
-} ssl_async_key_slot_t;
-
-typedef enum {
-    SSL_ASYNC_INJECT_ERROR_NONE = 0, /*!< Let the callbacks succeed */
-    SSL_ASYNC_INJECT_ERROR_START, /*!< Inject error during start */
-    SSL_ASYNC_INJECT_ERROR_CANCEL, /*!< Close the connection after async start */
-    SSL_ASYNC_INJECT_ERROR_RESUME, /*!< Inject error during resume */
-#define SSL_ASYNC_INJECT_ERROR_MAX SSL_ASYNC_INJECT_ERROR_RESUME
-} ssl_async_inject_error_t;
-
-typedef struct
-{
-    ssl_async_key_slot_t slots[4]; /* key, key2, sni1, sni2 */
-    size_t slots_used;
-    ssl_async_inject_error_t inject_error;
-    int (*f_rng)(void *, unsigned char *, size_t);
-    void *p_rng;
-} ssl_async_key_context_t;
-
-int ssl_async_set_key( ssl_async_key_context_t *ctx,
-                       mbedtls_x509_crt *cert,
-                       mbedtls_pk_context *pk,
-                       int pk_take_ownership,
-                       unsigned delay )
-{
-    if( ctx->slots_used >= sizeof( ctx->slots ) / sizeof( *ctx->slots ) )
-        return( -1 );
-    ctx->slots[ctx->slots_used].cert = cert;
-    ctx->slots[ctx->slots_used].pk = pk;
-    ctx->slots[ctx->slots_used].delay = delay;
-    ctx->slots[ctx->slots_used].pk_owned = pk_take_ownership;
-    ++ctx->slots_used;
-    return( 0 );
-}
-
-#define SSL_ASYNC_INPUT_MAX_SIZE 512
-
-typedef enum
-{
-    ASYNC_OP_SIGN,
-    ASYNC_OP_DECRYPT,
-} ssl_async_operation_type_t;
-/* Note that the enum above and the array below need to be kept in sync!
- * `ssl_async_operation_names[op]` is the name of op for each value `op`
- * of type `ssl_async_operation_type_t`. */
-static const char *const ssl_async_operation_names[] =
-{
-    "sign",
-    "decrypt",
-};
-
-typedef struct
-{
-    unsigned slot;
-    ssl_async_operation_type_t operation_type;
-    mbedtls_md_type_t md_alg;
-    unsigned char input[SSL_ASYNC_INPUT_MAX_SIZE];
-    size_t input_len;
-    unsigned remaining_delay;
-} ssl_async_operation_context_t;
-
-static int ssl_async_start( mbedtls_ssl_context *ssl,
-                            mbedtls_x509_crt *cert,
-                            ssl_async_operation_type_t op_type,
-                            mbedtls_md_type_t md_alg,
-                            const unsigned char *input,
-                            size_t input_len )
-{
-    ssl_async_key_context_t *config_data =
-        mbedtls_ssl_conf_get_async_config_data( ssl->conf );
-    unsigned slot;
-    ssl_async_operation_context_t *ctx = NULL;
-    const char *op_name = ssl_async_operation_names[op_type];
-
-    {
-        char dn[100];
-        if( mbedtls_x509_dn_gets( dn, sizeof( dn ), &cert->subject ) > 0 )
-            mbedtls_printf( "Async %s callback: looking for DN=%s\n",
-                            op_name, dn );
-    }
-
-    /* Look for a private key that matches the public key in cert.
-     * Since this test code has the private key inside Mbed TLS,
-     * we call mbedtls_pk_check_pair to match a private key with the
-     * public key. */
-    for( slot = 0; slot < config_data->slots_used; slot++ )
-    {
-        if( mbedtls_pk_check_pair( &cert->pk,
-                                   config_data->slots[slot].pk ) == 0 )
-            break;
-    }
-    if( slot == config_data->slots_used )
-    {
-        mbedtls_printf( "Async %s callback: no key matches this certificate.\n",
-                        op_name );
-        return( MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH );
-    }
-    mbedtls_printf( "Async %s callback: using key slot %u, delay=%u.\n",
-                    op_name, slot, config_data->slots[slot].delay );
-
-    if( config_data->inject_error == SSL_ASYNC_INJECT_ERROR_START )
-    {
-        mbedtls_printf( "Async %s callback: injected error\n", op_name );
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
-    }
-
-    if( input_len > SSL_ASYNC_INPUT_MAX_SIZE )
-        return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
-
-    ctx = mbedtls_calloc( 1, sizeof( *ctx ) );
-    if( ctx == NULL )
-        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
-    ctx->slot = slot;
-    ctx->operation_type = op_type;
-    ctx->md_alg = md_alg;
-    memcpy( ctx->input, input, input_len );
-    ctx->input_len = input_len;
-    ctx->remaining_delay = config_data->slots[slot].delay;
-    mbedtls_ssl_set_async_operation_data( ssl, ctx );
-
-    if( ctx->remaining_delay == 0 )
-        return( 0 );
-    else
-        return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
-}
-
-static int ssl_async_sign( mbedtls_ssl_context *ssl,
-                           mbedtls_x509_crt *cert,
-                           mbedtls_md_type_t md_alg,
-                           const unsigned char *hash,
-                           size_t hash_len )
-{
-    return( ssl_async_start( ssl, cert,
-                             ASYNC_OP_SIGN, md_alg,
-                             hash, hash_len ) );
-}
-
-static int ssl_async_decrypt( mbedtls_ssl_context *ssl,
-                              mbedtls_x509_crt *cert,
-                              const unsigned char *input,
-                              size_t input_len )
-{
-    return( ssl_async_start( ssl, cert,
-                             ASYNC_OP_DECRYPT, MBEDTLS_MD_NONE,
-                             input, input_len ) );
-}
-
-static int ssl_async_resume( mbedtls_ssl_context *ssl,
-                             unsigned char *output,
-                             size_t *output_len,
-                             size_t output_size )
-{
-    ssl_async_operation_context_t *ctx = mbedtls_ssl_get_async_operation_data( ssl );
-    ssl_async_key_context_t *config_data =
-        mbedtls_ssl_conf_get_async_config_data( ssl->conf );
-    ssl_async_key_slot_t *key_slot = &config_data->slots[ctx->slot];
-    int ret;
-    const char *op_name;
-
-    if( ctx->remaining_delay > 0 )
-    {
-        --ctx->remaining_delay;
-        mbedtls_printf( "Async resume (slot %u): call %u more times.\n",
-                        ctx->slot, ctx->remaining_delay );
-        return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
-    }
-
-    switch( ctx->operation_type )
-    {
-        case ASYNC_OP_DECRYPT:
-            ret = mbedtls_pk_decrypt( key_slot->pk,
-                                      ctx->input, ctx->input_len,
-                                      output, output_len, output_size,
-                                      config_data->f_rng, config_data->p_rng );
-            break;
-        case ASYNC_OP_SIGN:
-            ret = mbedtls_pk_sign( key_slot->pk,
-                                   ctx->md_alg,
-                                   ctx->input, ctx->input_len,
-                                   output, output_len,
-                                   config_data->f_rng, config_data->p_rng );
-            break;
-        default:
-            mbedtls_printf( "Async resume (slot %u): unknown operation type %ld. This shouldn't happen.\n",
-                            ctx->slot, (long) ctx->operation_type );
-            mbedtls_free( ctx );
-            return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
-            break;
-    }
-
-    op_name = ssl_async_operation_names[ctx->operation_type];
-
-    if( config_data->inject_error == SSL_ASYNC_INJECT_ERROR_RESUME )
-    {
-        mbedtls_printf( "Async resume callback: %s done but injected error\n",
-                        op_name );
-        mbedtls_free( ctx );
-        return( MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE );
-    }
-
-    mbedtls_printf( "Async resume (slot %u): %s done, status=%d.\n",
-                    ctx->slot, op_name, ret );
-    mbedtls_free( ctx );
-    return( ret );
-}
-
-static void ssl_async_cancel( mbedtls_ssl_context *ssl )
-{
-    ssl_async_operation_context_t *ctx = mbedtls_ssl_get_async_operation_data( ssl );
-    mbedtls_printf( "Async cancel callback.\n" );
-    mbedtls_free( ctx );
-}
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-static psa_status_t psa_setup_psk_key_slot( psa_key_id_t *slot,
-                                            psa_algorithm_t alg,
-                                            unsigned char *psk,
-                                            size_t psk_len )
-{
-    psa_status_t status;
-    psa_key_attributes_t key_attributes;
-
-    key_attributes = psa_key_attributes_init();
-    psa_set_key_usage_flags( &key_attributes, PSA_KEY_USAGE_DERIVE );
-    psa_set_key_algorithm( &key_attributes, alg );
-    psa_set_key_type( &key_attributes, PSA_KEY_TYPE_DERIVE );
-
-    status = psa_import_key( &key_attributes, psk, psk_len, slot );
-    if( status != PSA_SUCCESS )
-    {
-        fprintf( stderr, "IMPORT\n" );
-        return( status );
-    }
-
-    return( PSA_SUCCESS );
-}
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-int report_cid_usage( mbedtls_ssl_context *ssl,
-                      const char *additional_description )
-{
-    int ret;
-    unsigned char peer_cid[ MBEDTLS_SSL_CID_OUT_LEN_MAX ];
-    size_t peer_cid_len;
-    int cid_negotiated;
-
-    if( opt.transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-        return( 0 );
-
-    /* Check if the use of a CID has been negotiated */
-    ret = mbedtls_ssl_get_peer_cid( ssl, &cid_negotiated,
-                                    peer_cid, &peer_cid_len );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_get_peer_cid returned -0x%x\n\n",
-                        (unsigned int) -ret );
-        return( ret );
-    }
-
-    if( cid_negotiated == MBEDTLS_SSL_CID_DISABLED )
-    {
-        if( opt.cid_enabled == MBEDTLS_SSL_CID_ENABLED )
-        {
-            mbedtls_printf( "(%s) Use of Connection ID was not offered by client.\n",
-                            additional_description );
-        }
-    }
-    else
-    {
-        size_t idx=0;
-        mbedtls_printf( "(%s) Use of Connection ID has been negotiated.\n",
-                        additional_description );
-        mbedtls_printf( "(%s) Peer CID (length %u Bytes): ",
-                        additional_description,
-                        (unsigned) peer_cid_len );
-        while( idx < peer_cid_len )
-        {
-            mbedtls_printf( "%02x ", peer_cid[ idx ] );
-            idx++;
-        }
-        mbedtls_printf( "\n" );
-    }
-
-    return( 0 );
-}
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-int main( int argc, char *argv[] )
-{
-    int ret = 0, len, written, frags, exchanges_left;
-    int query_config_ret = 0;
-    int version_suites[4][2];
-    io_ctx_t io_ctx;
-    unsigned char* buf = 0;
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_algorithm_t alg = 0;
-    psa_key_id_t psk_slot = 0;
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-    unsigned char psk[MBEDTLS_PSK_MAX_LEN];
-    size_t psk_len = 0;
-    psk_entry *psk_info = NULL;
-#endif
-    const char *pers = "ssl_server2";
-    unsigned char client_ip[16] = { 0 };
-    size_t cliip_len;
-#if defined(MBEDTLS_SSL_COOKIE_C)
-    mbedtls_ssl_cookie_ctx cookie_ctx;
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_profile crt_profile_for_test = mbedtls_x509_crt_profile_default;
-#endif
-    rng_context_t rng;
-    mbedtls_ssl_context ssl;
-    mbedtls_ssl_config conf;
-#if defined(MBEDTLS_TIMING_C)
-    mbedtls_timing_delay_context timer;
-#endif
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-    unsigned char renego_period[8] = { 0 };
-#endif
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    uint32_t flags;
-    mbedtls_x509_crt cacert;
-    mbedtls_x509_crt srvcert;
-    mbedtls_pk_context pkey;
-    mbedtls_x509_crt srvcert2;
-    mbedtls_pk_context pkey2;
-    int key_cert_init = 0, key_cert_init2 = 0;
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    ssl_async_key_context_t ssl_async_keys;
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO)
-    mbedtls_dhm_context dhm;
-#endif
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_context cache;
-#endif
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    mbedtls_ssl_ticket_context ticket_ctx;
-#endif
-#if defined(SNI_OPTION)
-    sni_entry *sni_info = NULL;
-#endif
-#if defined(MBEDTLS_ECP_C)
-    mbedtls_ecp_group_id curve_list[CURVE_LIST_SIZE];
-    const mbedtls_ecp_curve_info * curve_cur;
-#endif
-#if defined(MBEDTLS_SSL_ALPN)
-    const char *alpn_list[ALPN_LIST_SIZE];
-#endif
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    unsigned char alloc_buf[MEMORY_HEAP_SIZE];
-#endif
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    unsigned char cid[MBEDTLS_SSL_CID_IN_LEN_MAX];
-    unsigned char cid_renego[MBEDTLS_SSL_CID_IN_LEN_MAX];
-    size_t cid_len = 0;
-    size_t cid_renego_len = 0;
-#endif
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-    unsigned char *context_buf = NULL;
-    size_t context_buf_len = 0;
-#endif
-
-    int i;
-    char *p, *q;
-    const int *list;
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    psa_status_t status;
-#endif
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-    unsigned char eap_tls_keymaterial[16];
-    unsigned char eap_tls_iv[8];
-    const char* eap_tls_label = "client EAP encryption";
-    eap_tls_keys eap_tls_keying;
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-    /*! master keys and master salt for SRTP generated during handshake */
-     unsigned char dtls_srtp_key_material[MBEDTLS_TLS_SRTP_MAX_KEY_MATERIAL_LENGTH];
-     const char* dtls_srtp_label = "EXTRACTOR-dtls_srtp";
-     dtls_srtp_keys dtls_srtp_keying;
-     const mbedtls_ssl_srtp_profile default_profiles[] = {
-         MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_80,
-         MBEDTLS_TLS_SRTP_AES128_CM_HMAC_SHA1_32,
-         MBEDTLS_TLS_SRTP_NULL_HMAC_SHA1_80,
-         MBEDTLS_TLS_SRTP_NULL_HMAC_SHA1_32,
-         MBEDTLS_TLS_SRTP_UNSET
-     };
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-    mbedtls_memory_buffer_alloc_init( alloc_buf, sizeof(alloc_buf) );
-#if defined(MBEDTLS_MEMORY_DEBUG)
-    size_t current_heap_memory, peak_heap_memory, heap_blocks;
-#endif  /* MBEDTLS_MEMORY_DEBUG */
-#endif  /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
-
-#if defined(MBEDTLS_TEST_HOOKS)
-    test_hooks_init( );
-#endif /* MBEDTLS_TEST_HOOKS */
-
-    /*
-     * Make sure memory references are valid in case we exit early.
-     */
-    mbedtls_net_init( &client_fd );
-    mbedtls_net_init( &listen_fd );
-    mbedtls_ssl_init( &ssl );
-    mbedtls_ssl_config_init( &conf );
-    rng_init( &rng );
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_init( &cacert );
-    mbedtls_x509_crt_init( &srvcert );
-    mbedtls_pk_init( &pkey );
-    mbedtls_x509_crt_init( &srvcert2 );
-    mbedtls_pk_init( &pkey2 );
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    memset( &ssl_async_keys, 0, sizeof( ssl_async_keys ) );
-#endif
-#endif
-#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO)
-    mbedtls_dhm_init( &dhm );
-#endif
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_init( &cache );
-#endif
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    mbedtls_ssl_ticket_init( &ticket_ctx );
-#endif
-#if defined(MBEDTLS_SSL_ALPN)
-    memset( (void *) alpn_list, 0, sizeof( alpn_list ) );
-#endif
-#if defined(MBEDTLS_SSL_COOKIE_C)
-    mbedtls_ssl_cookie_init( &cookie_ctx );
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    status = psa_crypto_init();
-    if( status != PSA_SUCCESS )
-    {
-        mbedtls_fprintf( stderr, "Failed to initialize PSA Crypto implementation: %d\n",
-                         (int) status );
-        ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
-        goto exit;
-    }
-#endif  /* MBEDTLS_USE_PSA_CRYPTO */
-#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-    mbedtls_test_enable_insecure_external_rng( );
-#endif  /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */
-
-#if !defined(_WIN32)
-    /* Abort cleanly on SIGTERM and SIGINT */
-    signal( SIGTERM, term_handler );
-    signal( SIGINT, term_handler );
-#endif
-
-    if( argc == 0 )
-    {
-    usage:
-        if( ret == 0 )
-            ret = 1;
-
-        mbedtls_printf( USAGE1 );
-        mbedtls_printf( USAGE2 );
-        mbedtls_printf( USAGE3 );
-        mbedtls_printf( USAGE4 );
-
-        list = mbedtls_ssl_list_ciphersuites();
-        while( *list )
-        {
-            mbedtls_printf(" %-42s", mbedtls_ssl_get_ciphersuite_name( *list ) );
-            list++;
-            if( !*list )
-                break;
-            mbedtls_printf(" %s\n", mbedtls_ssl_get_ciphersuite_name( *list ) );
-            list++;
-        }
-        mbedtls_printf("\n");
-        goto exit;
-    }
-
-    opt.buffer_size         = DFL_IO_BUF_LEN;
-    opt.server_addr         = DFL_SERVER_ADDR;
-    opt.server_port         = DFL_SERVER_PORT;
-    opt.debug_level         = DFL_DEBUG_LEVEL;
-    opt.event               = DFL_EVENT;
-    opt.response_size       = DFL_RESPONSE_SIZE;
-    opt.nbio                = DFL_NBIO;
-    opt.cid_enabled         = DFL_CID_ENABLED;
-    opt.cid_enabled_renego  = DFL_CID_ENABLED_RENEGO;
-    opt.cid_val             = DFL_CID_VALUE;
-    opt.cid_val_renego      = DFL_CID_VALUE_RENEGO;
-    opt.read_timeout        = DFL_READ_TIMEOUT;
-    opt.ca_file             = DFL_CA_FILE;
-    opt.ca_path             = DFL_CA_PATH;
-    opt.crt_file            = DFL_CRT_FILE;
-    opt.key_file            = DFL_KEY_FILE;
-    opt.key_pwd             = DFL_KEY_PWD;
-    opt.crt_file2           = DFL_CRT_FILE2;
-    opt.key_file2           = DFL_KEY_FILE2;
-    opt.key_pwd2            = DFL_KEY_PWD2;
-    opt.async_operations    = DFL_ASYNC_OPERATIONS;
-    opt.async_private_delay1 = DFL_ASYNC_PRIVATE_DELAY1;
-    opt.async_private_delay2 = DFL_ASYNC_PRIVATE_DELAY2;
-    opt.async_private_error = DFL_ASYNC_PRIVATE_ERROR;
-    opt.psk                 = DFL_PSK;
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    opt.psk_opaque          = DFL_PSK_OPAQUE;
-    opt.psk_list_opaque     = DFL_PSK_LIST_OPAQUE;
-#endif
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-    opt.ca_callback         = DFL_CA_CALLBACK;
-#endif
-    opt.psk_identity        = DFL_PSK_IDENTITY;
-    opt.psk_list            = DFL_PSK_LIST;
-    opt.ecjpake_pw          = DFL_ECJPAKE_PW;
-    opt.force_ciphersuite[0]= DFL_FORCE_CIPHER;
-    opt.version_suites      = DFL_VERSION_SUITES;
-    opt.renegotiation       = DFL_RENEGOTIATION;
-    opt.allow_legacy        = DFL_ALLOW_LEGACY;
-    opt.renegotiate         = DFL_RENEGOTIATE;
-    opt.renego_delay        = DFL_RENEGO_DELAY;
-    opt.renego_period       = DFL_RENEGO_PERIOD;
-    opt.exchanges           = DFL_EXCHANGES;
-    opt.min_version         = DFL_MIN_VERSION;
-    opt.max_version         = DFL_MAX_VERSION;
-    opt.arc4                = DFL_ARC4;
-    opt.allow_sha1          = DFL_SHA1;
-    opt.auth_mode           = DFL_AUTH_MODE;
-    opt.cert_req_ca_list    = DFL_CERT_REQ_CA_LIST;
-    opt.mfl_code            = DFL_MFL_CODE;
-    opt.trunc_hmac          = DFL_TRUNC_HMAC;
-    opt.tickets             = DFL_TICKETS;
-    opt.ticket_timeout      = DFL_TICKET_TIMEOUT;
-    opt.cache_max           = DFL_CACHE_MAX;
-    opt.cache_timeout       = DFL_CACHE_TIMEOUT;
-    opt.sni                 = DFL_SNI;
-    opt.alpn_string         = DFL_ALPN_STRING;
-    opt.curves              = DFL_CURVES;
-    opt.dhm_file            = DFL_DHM_FILE;
-    opt.transport           = DFL_TRANSPORT;
-    opt.cookies             = DFL_COOKIES;
-    opt.anti_replay         = DFL_ANTI_REPLAY;
-    opt.hs_to_min           = DFL_HS_TO_MIN;
-    opt.hs_to_max           = DFL_HS_TO_MAX;
-    opt.dtls_mtu            = DFL_DTLS_MTU;
-    opt.dgram_packing       = DFL_DGRAM_PACKING;
-    opt.badmac_limit        = DFL_BADMAC_LIMIT;
-    opt.extended_ms         = DFL_EXTENDED_MS;
-    opt.etm                 = DFL_ETM;
-    opt.serialize           = DFL_SERIALIZE;
-    opt.context_file        = DFL_CONTEXT_FILE;
-    opt.eap_tls             = DFL_EAP_TLS;
-    opt.reproducible        = DFL_REPRODUCIBLE;
-    opt.nss_keylog          = DFL_NSS_KEYLOG;
-    opt.nss_keylog_file     = DFL_NSS_KEYLOG_FILE;
-    opt.query_config_mode   = DFL_QUERY_CONFIG_MODE;
-    opt.use_srtp            = DFL_USE_SRTP;
-    opt.force_srtp_profile  = DFL_SRTP_FORCE_PROFILE;
-    opt.support_mki         = DFL_SRTP_SUPPORT_MKI;
-
-    for( i = 1; i < argc; i++ )
-    {
-        p = argv[i];
-        if( ( q = strchr( p, '=' ) ) == NULL )
-            goto usage;
-        *q++ = '\0';
-
-        if( strcmp( p, "server_port" ) == 0 )
-            opt.server_port = q;
-        else if( strcmp( p, "server_addr" ) == 0 )
-            opt.server_addr = q;
-        else if( strcmp( p, "dtls" ) == 0 )
-        {
-            int t = atoi( q );
-            if( t == 0 )
-                opt.transport = MBEDTLS_SSL_TRANSPORT_STREAM;
-            else if( t == 1 )
-                opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "debug_level" ) == 0 )
-        {
-            opt.debug_level = atoi( q );
-            if( opt.debug_level < 0 || opt.debug_level > 65535 )
-                goto usage;
-        }
-        else if( strcmp( p, "nbio" ) == 0 )
-        {
-            opt.nbio = atoi( q );
-            if( opt.nbio < 0 || opt.nbio > 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "event" ) == 0 )
-        {
-            opt.event = atoi( q );
-            if( opt.event < 0 || opt.event > 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "read_timeout" ) == 0 )
-            opt.read_timeout = atoi( q );
-        else if( strcmp( p, "buffer_size" ) == 0 )
-        {
-            opt.buffer_size = atoi( q );
-            if( opt.buffer_size < 1 || opt.buffer_size > MBEDTLS_SSL_MAX_CONTENT_LEN + 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "response_size" ) == 0 )
-        {
-            opt.response_size = atoi( q );
-            if( opt.response_size < 0 || opt.response_size > MBEDTLS_SSL_MAX_CONTENT_LEN )
-                goto usage;
-            if( opt.buffer_size < opt.response_size )
-                opt.buffer_size = opt.response_size;
-        }
-        else if( strcmp( p, "ca_file" ) == 0 )
-            opt.ca_file = q;
-        else if( strcmp( p, "ca_path" ) == 0 )
-            opt.ca_path = q;
-        else if( strcmp( p, "crt_file" ) == 0 )
-            opt.crt_file = q;
-        else if( strcmp( p, "key_file" ) == 0 )
-            opt.key_file = q;
-        else if( strcmp( p, "key_pwd" ) == 0 )
-            opt.key_pwd = q;
-        else if( strcmp( p, "crt_file2" ) == 0 )
-            opt.crt_file2 = q;
-        else if( strcmp( p, "key_file2" ) == 0 )
-            opt.key_file2 = q;
-        else if( strcmp( p, "key_pwd2" ) == 0 )
-            opt.key_pwd2 = q;
-        else if( strcmp( p, "dhm_file" ) == 0 )
-            opt.dhm_file = q;
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        else if( strcmp( p, "async_operations" ) == 0 )
-            opt.async_operations = q;
-        else if( strcmp( p, "async_private_delay1" ) == 0 )
-            opt.async_private_delay1 = atoi( q );
-        else if( strcmp( p, "async_private_delay2" ) == 0 )
-            opt.async_private_delay2 = atoi( q );
-        else if( strcmp( p, "async_private_error" ) == 0 )
-        {
-            int n = atoi( q );
-            if( n < -SSL_ASYNC_INJECT_ERROR_MAX ||
-                n > SSL_ASYNC_INJECT_ERROR_MAX )
-            {
-                ret = 2;
-                goto usage;
-            }
-            opt.async_private_error = n;
-        }
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-        else if( strcmp( p, "cid" ) == 0 )
-        {
-            opt.cid_enabled = atoi( q );
-            if( opt.cid_enabled != 0 && opt.cid_enabled != 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "cid_renego" ) == 0 )
-        {
-            opt.cid_enabled_renego = atoi( q );
-            if( opt.cid_enabled_renego != 0 && opt.cid_enabled_renego != 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "cid_val" ) == 0 )
-        {
-            opt.cid_val = q;
-        }
-        else if( strcmp( p, "cid_val_renego" ) == 0 )
-        {
-            opt.cid_val_renego = q;
-        }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-        else if( strcmp( p, "psk" ) == 0 )
-            opt.psk = q;
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        else if( strcmp( p, "psk_opaque" ) == 0 )
-            opt.psk_opaque = atoi( q );
-        else if( strcmp( p, "psk_list_opaque" ) == 0 )
-            opt.psk_list_opaque = atoi( q );
-#endif
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-        else if( strcmp( p, "ca_callback" ) == 0)
-            opt.ca_callback = atoi( q );
-#endif
-        else if( strcmp( p, "psk_identity" ) == 0 )
-            opt.psk_identity = q;
-        else if( strcmp( p, "psk_list" ) == 0 )
-            opt.psk_list = q;
-        else if( strcmp( p, "ecjpake_pw" ) == 0 )
-            opt.ecjpake_pw = q;
-        else if( strcmp( p, "force_ciphersuite" ) == 0 )
-        {
-            opt.force_ciphersuite[0] = mbedtls_ssl_get_ciphersuite_id( q );
-
-            if( opt.force_ciphersuite[0] == 0 )
-            {
-                ret = 2;
-                goto usage;
-            }
-            opt.force_ciphersuite[1] = 0;
-        }
-        else if( strcmp( p, "curves" ) == 0 )
-            opt.curves = q;
-        else if( strcmp( p, "version_suites" ) == 0 )
-            opt.version_suites = q;
-        else if( strcmp( p, "renegotiation" ) == 0 )
-        {
-            opt.renegotiation = (atoi( q )) ?
-                MBEDTLS_SSL_RENEGOTIATION_ENABLED :
-                MBEDTLS_SSL_RENEGOTIATION_DISABLED;
-        }
-        else if( strcmp( p, "allow_legacy" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case -1:
-                    opt.allow_legacy = MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE;
-                    break;
-                case 0:
-                    opt.allow_legacy = MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION;
-                    break;
-                case 1:
-                    opt.allow_legacy = MBEDTLS_SSL_LEGACY_ALLOW_RENEGOTIATION;
-                    break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "renegotiate" ) == 0 )
-        {
-            opt.renegotiate = atoi( q );
-            if( opt.renegotiate < 0 || opt.renegotiate > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "renego_delay" ) == 0 )
-        {
-            opt.renego_delay = atoi( q );
-        }
-        else if( strcmp( p, "renego_period" ) == 0 )
-        {
-#if defined(_MSC_VER)
-            opt.renego_period = _strtoui64( q, NULL, 10 );
-#else
-            if( sscanf( q, "%" SCNu64, &opt.renego_period ) != 1 )
-                goto usage;
-#endif /* _MSC_VER */
-            if( opt.renego_period < 2 )
-                goto usage;
-        }
-        else if( strcmp( p, "exchanges" ) == 0 )
-        {
-            opt.exchanges = atoi( q );
-            if( opt.exchanges < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "min_version" ) == 0 )
-        {
-            if( strcmp( q, "ssl3" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0;
-            else if( strcmp( q, "tls1" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1;
-            else if( strcmp( q, "tls1_1" ) == 0 ||
-                     strcmp( q, "dtls1" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-            else if( strcmp( q, "tls1_2" ) == 0 ||
-                     strcmp( q, "dtls1_2" ) == 0 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "max_version" ) == 0 )
-        {
-            if( strcmp( q, "ssl3" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0;
-            else if( strcmp( q, "tls1" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1;
-            else if( strcmp( q, "tls1_1" ) == 0 ||
-                     strcmp( q, "dtls1" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
-            else if( strcmp( q, "tls1_2" ) == 0 ||
-                     strcmp( q, "dtls1_2" ) == 0 )
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "arc4" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0:     opt.arc4 = MBEDTLS_SSL_ARC4_DISABLED;   break;
-                case 1:     opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED;    break;
-                default:    goto usage;
-            }
-        }
-        else if( strcmp( p, "allow_sha1" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0:     opt.allow_sha1 = 0;   break;
-                case 1:     opt.allow_sha1 = 1;    break;
-                default:    goto usage;
-            }
-        }
-        else if( strcmp( p, "force_version" ) == 0 )
-        {
-            if( strcmp( q, "ssl3" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_0;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_0;
-            }
-            else if( strcmp( q, "tls1" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_1;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_1;
-            }
-            else if( strcmp( q, "tls1_1" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
-            }
-            else if( strcmp( q, "tls1_2" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-            }
-            else if( strcmp( q, "dtls1" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_2;
-                opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
-            }
-            else if( strcmp( q, "dtls1_2" ) == 0 )
-            {
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_3;
-                opt.max_version = MBEDTLS_SSL_MINOR_VERSION_3;
-                opt.transport = MBEDTLS_SSL_TRANSPORT_DATAGRAM;
-            }
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "auth_mode" ) == 0 )
-        {
-            if( ( opt.auth_mode = get_auth_mode( q ) ) < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "cert_req_ca_list" ) == 0 )
-        {
-            opt.cert_req_ca_list = atoi( q );
-            if( opt.cert_req_ca_list < 0 || opt.cert_req_ca_list > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "max_frag_len" ) == 0 )
-        {
-            if( strcmp( q, "512" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_512;
-            else if( strcmp( q, "1024" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_1024;
-            else if( strcmp( q, "2048" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_2048;
-            else if( strcmp( q, "4096" ) == 0 )
-                opt.mfl_code = MBEDTLS_SSL_MAX_FRAG_LEN_4096;
-            else
-                goto usage;
-        }
-        else if( strcmp( p, "alpn" ) == 0 )
-        {
-            opt.alpn_string = q;
-        }
-        else if( strcmp( p, "trunc_hmac" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_DISABLED; break;
-                case 1: opt.trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED; break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "extended_ms" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0:
-                    opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_DISABLED;
-                    break;
-                case 1:
-                    opt.extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED;
-                    break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "etm" ) == 0 )
-        {
-            switch( atoi( q ) )
-            {
-                case 0: opt.etm = MBEDTLS_SSL_ETM_DISABLED; break;
-                case 1: opt.etm = MBEDTLS_SSL_ETM_ENABLED; break;
-                default: goto usage;
-            }
-        }
-        else if( strcmp( p, "tickets" ) == 0 )
-        {
-            opt.tickets = atoi( q );
-            if( opt.tickets < 0 || opt.tickets > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "ticket_timeout" ) == 0 )
-        {
-            opt.ticket_timeout = atoi( q );
-            if( opt.ticket_timeout < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "cache_max" ) == 0 )
-        {
-            opt.cache_max = atoi( q );
-            if( opt.cache_max < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "cache_timeout" ) == 0 )
-        {
-            opt.cache_timeout = atoi( q );
-            if( opt.cache_timeout < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "cookies" ) == 0 )
-        {
-            opt.cookies = atoi( q );
-            if( opt.cookies < -1 || opt.cookies > 1)
-                goto usage;
-        }
-        else if( strcmp( p, "anti_replay" ) == 0 )
-        {
-            opt.anti_replay = atoi( q );
-            if( opt.anti_replay < 0 || opt.anti_replay > 1)
-                goto usage;
-        }
-        else if( strcmp( p, "badmac_limit" ) == 0 )
-        {
-            opt.badmac_limit = atoi( q );
-            if( opt.badmac_limit < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "hs_timeout" ) == 0 )
-        {
-            if( ( p = strchr( q, '-' ) ) == NULL )
-                goto usage;
-            *p++ = '\0';
-            opt.hs_to_min = atoi( q );
-            opt.hs_to_max = atoi( p );
-            if( opt.hs_to_min == 0 || opt.hs_to_max < opt.hs_to_min )
-                goto usage;
-        }
-        else if( strcmp( p, "mtu" ) == 0 )
-        {
-            opt.dtls_mtu = atoi( q );
-            if( opt.dtls_mtu < 0 )
-                goto usage;
-        }
-        else if( strcmp( p, "dgram_packing" ) == 0 )
-        {
-            opt.dgram_packing = atoi( q );
-            if( opt.dgram_packing != 0 &&
-                opt.dgram_packing != 1 )
-            {
-                goto usage;
-            }
-        }
-        else if( strcmp( p, "sni" ) == 0 )
-        {
-            opt.sni = q;
-        }
-        else if( strcmp( p, "query_config" ) == 0 )
-        {
-            opt.query_config_mode = 1;
-            query_config_ret = query_config( q );
-            goto exit;
-        }
-        else if( strcmp( p, "serialize") == 0 )
-        {
-            opt.serialize = atoi( q );
-            if( opt.serialize < 0 || opt.serialize > 2)
-                goto usage;
-        }
-        else if( strcmp( p, "context_file") == 0 )
-        {
-            opt.context_file = q;
-        }
-        else if( strcmp( p, "eap_tls" ) == 0 )
-        {
-            opt.eap_tls = atoi( q );
-            if( opt.eap_tls < 0 || opt.eap_tls > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "reproducible" ) == 0 )
-        {
-            opt.reproducible = 1;
-        }
-        else if( strcmp( p, "nss_keylog" ) == 0 )
-        {
-            opt.nss_keylog = atoi( q );
-            if( opt.nss_keylog < 0 || opt.nss_keylog > 1 )
-                goto usage;
-        }
-        else if( strcmp( p, "nss_keylog_file" ) == 0 )
-        {
-            opt.nss_keylog_file = q;
-        }
-        else if( strcmp( p, "use_srtp" ) == 0 )
-        {
-            opt.use_srtp = atoi ( q );
-        }
-        else if( strcmp( p, "srtp_force_profile" ) == 0 )
-        {
-            opt.force_srtp_profile = atoi( q );
-        }
-        else if( strcmp( p, "support_mki" ) == 0 )
-        {
-            opt.support_mki = atoi( q );
-        }
-        else
-            goto usage;
-    }
-
-    if( opt.nss_keylog != 0 && opt.eap_tls != 0 )
-    {
-        mbedtls_printf( "Error: eap_tls and nss_keylog options cannot be used together.\n" );
-        goto usage;
-    }
-
-    /* Event-driven IO is incompatible with the above custom
-     * receive and send functions, as the polling builds on
-     * refers to the underlying net_context. */
-    if( opt.event == 1 && opt.nbio != 1 )
-    {
-        mbedtls_printf( "Warning: event-driven IO mandates nbio=1 - overwrite\n" );
-        opt.nbio = 1;
-    }
-
-#if defined(MBEDTLS_DEBUG_C)
-    mbedtls_debug_set_threshold( opt.debug_level );
-#endif
-    buf = mbedtls_calloc( 1, opt.buffer_size + 1 );
-    if( buf == NULL )
-    {
-        mbedtls_printf( "Could not allocate %u bytes\n", opt.buffer_size );
-        ret = 3;
-        goto exit;
-    }
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( opt.psk_opaque != 0 )
-    {
-        if( strlen( opt.psk ) == 0 )
-        {
-            mbedtls_printf( "psk_opaque set but no psk to be imported specified.\n" );
-            ret = 2;
-            goto usage;
-        }
-
-        if( opt.force_ciphersuite[0] <= 0 )
-        {
-            mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" );
-            ret = 2;
-            goto usage;
-        }
-    }
-
-    if( opt.psk_list_opaque != 0 )
-    {
-        if( opt.psk_list == NULL )
-        {
-            mbedtls_printf( "psk_slot set but no psk to be imported specified.\n" );
-            ret = 2;
-            goto usage;
-        }
-
-        if( opt.force_ciphersuite[0] <= 0 )
-        {
-            mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" );
-            ret = 2;
-            goto usage;
-        }
-    }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-    if( opt.force_ciphersuite[0] > 0 )
-    {
-        const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
-        ciphersuite_info =
-            mbedtls_ssl_ciphersuite_from_id( opt.force_ciphersuite[0] );
-
-        if( opt.max_version != -1 &&
-            ciphersuite_info->min_minor_ver > opt.max_version )
-        {
-            mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" );
-            ret = 2;
-            goto usage;
-        }
-        if( opt.min_version != -1 &&
-            ciphersuite_info->max_minor_ver < opt.min_version )
-        {
-            mbedtls_printf( "forced ciphersuite not allowed with this protocol version\n" );
-            ret = 2;
-            goto usage;
-        }
-
-        /* If we select a version that's not supported by
-         * this suite, then there will be no common ciphersuite... */
-        if( opt.max_version == -1 ||
-            opt.max_version > ciphersuite_info->max_minor_ver )
-        {
-            opt.max_version = ciphersuite_info->max_minor_ver;
-        }
-        if( opt.min_version < ciphersuite_info->min_minor_ver )
-        {
-            opt.min_version = ciphersuite_info->min_minor_ver;
-            /* DTLS starts with TLS 1.1 */
-            if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-                opt.min_version < MBEDTLS_SSL_MINOR_VERSION_2 )
-                opt.min_version = MBEDTLS_SSL_MINOR_VERSION_2;
-        }
-
-        /* Enable RC4 if needed and not explicitly disabled */
-        if( ciphersuite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
-        {
-            if( opt.arc4 == MBEDTLS_SSL_ARC4_DISABLED )
-            {
-                mbedtls_printf("forced RC4 ciphersuite with RC4 disabled\n");
-                ret = 2;
-                goto usage;
-            }
-
-            opt.arc4 = MBEDTLS_SSL_ARC4_ENABLED;
-        }
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        if( opt.psk_opaque != 0 || opt.psk_list_opaque != 0 )
-        {
-            /* Ensure that the chosen ciphersuite is PSK-only; we must know
-             * the ciphersuite in advance to set the correct policy for the
-             * PSK key slot. This limitation might go away in the future. */
-            if( ciphersuite_info->key_exchange != MBEDTLS_KEY_EXCHANGE_PSK ||
-                opt.min_version != MBEDTLS_SSL_MINOR_VERSION_3 )
-            {
-                mbedtls_printf( "opaque PSKs are only supported in conjunction with forcing TLS 1.2 and a PSK-only ciphersuite through the 'force_ciphersuite' option.\n" );
-                ret = 2;
-                goto usage;
-            }
-
-            /* Determine KDF algorithm the opaque PSK will be used in. */
-#if defined(MBEDTLS_SHA512_C)
-            if( ciphersuite_info->mac == MBEDTLS_MD_SHA384 )
-                alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_384);
-            else
-#endif /* MBEDTLS_SHA512_C */
-                alg = PSA_ALG_TLS12_PSK_TO_MS(PSA_ALG_SHA_256);
-        }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-    }
-
-    if( opt.version_suites != NULL )
-    {
-        const char *name[4] = { 0 };
-
-        /* Parse 4-element coma-separated list */
-        for( i = 0, p = (char *) opt.version_suites;
-             i < 4 && *p != '\0';
-             i++ )
-        {
-            name[i] = p;
-
-            /* Terminate the current string and move on to next one */
-            while( *p != ',' && *p != '\0' )
-                p++;
-            if( *p == ',' )
-                *p++ = '\0';
-        }
-
-        if( i != 4 )
-        {
-            mbedtls_printf( "too few values for version_suites\n" );
-            ret = 1;
-            goto exit;
-        }
-
-        memset( version_suites, 0, sizeof( version_suites ) );
-
-        /* Get the suites identifiers from their name */
-        for( i = 0; i < 4; i++ )
-        {
-            version_suites[i][0] = mbedtls_ssl_get_ciphersuite_id( name[i] );
-
-            if( version_suites[i][0] == 0 )
-            {
-                mbedtls_printf( "unknown ciphersuite: '%s'\n", name[i] );
-                ret = 2;
-                goto usage;
-            }
-        }
-    }
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    if( mbedtls_test_unhexify( cid, sizeof( cid ),
-                               opt.cid_val, &cid_len ) != 0 )
-    {
-        mbedtls_printf( "CID not valid hex\n" );
-        goto exit;
-    }
-
-    /* Keep CID settings for renegotiation unless
-     * specified otherwise. */
-    if( opt.cid_enabled_renego == DFL_CID_ENABLED_RENEGO )
-        opt.cid_enabled_renego = opt.cid_enabled;
-    if( opt.cid_val_renego == DFL_CID_VALUE_RENEGO )
-        opt.cid_val_renego = opt.cid_val;
-
-    if( mbedtls_test_unhexify( cid_renego, sizeof( cid_renego ),
-                               opt.cid_val_renego, &cid_renego_len ) != 0 )
-    {
-        mbedtls_printf( "CID not valid hex\n" );
-        goto exit;
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-    /*
-     * Unhexify the pre-shared key and parse the list if any given
-     */
-    if( mbedtls_test_unhexify( psk, sizeof( psk ),
-                               opt.psk, &psk_len ) != 0 )
-    {
-        mbedtls_printf( "pre-shared key not valid hex\n" );
-        goto exit;
-    }
-
-    if( opt.psk_list != NULL )
-    {
-        if( ( psk_info = psk_parse( opt.psk_list ) ) == NULL )
-        {
-            mbedtls_printf( "psk_list invalid" );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
-
-#if defined(MBEDTLS_ECP_C)
-    if( opt.curves != NULL )
-    {
-        p = (char *) opt.curves;
-        i = 0;
-
-        if( strcmp( p, "none" ) == 0 )
-        {
-            curve_list[0] = MBEDTLS_ECP_DP_NONE;
-        }
-        else if( strcmp( p, "default" ) != 0 )
-        {
-            /* Leave room for a final NULL in curve list */
-            while( i < CURVE_LIST_SIZE - 1 && *p != '\0' )
-            {
-                q = p;
-
-                /* Terminate the current string */
-                while( *p != ',' && *p != '\0' )
-                    p++;
-                if( *p == ',' )
-                    *p++ = '\0';
-
-                if( ( curve_cur = mbedtls_ecp_curve_info_from_name( q ) ) != NULL )
-                {
-                    curve_list[i++] = curve_cur->grp_id;
-                }
-                else
-                {
-                    mbedtls_printf( "unknown curve %s\n", q );
-                    mbedtls_printf( "supported curves: " );
-                    for( curve_cur = mbedtls_ecp_curve_list();
-                         curve_cur->grp_id != MBEDTLS_ECP_DP_NONE;
-                         curve_cur++ )
-                    {
-                        mbedtls_printf( "%s ", curve_cur->name );
-                    }
-                    mbedtls_printf( "\n" );
-                    goto exit;
-                }
-            }
-
-            mbedtls_printf("Number of curves: %d\n", i );
-
-            if( i == CURVE_LIST_SIZE - 1 && *p != '\0' )
-            {
-                mbedtls_printf( "curves list too long, maximum %d",
-                                CURVE_LIST_SIZE - 1  );
-                goto exit;
-            }
-
-            curve_list[i] = MBEDTLS_ECP_DP_NONE;
-        }
-    }
-#endif /* MBEDTLS_ECP_C */
-
-#if defined(MBEDTLS_SSL_ALPN)
-    if( opt.alpn_string != NULL )
-    {
-        p = (char *) opt.alpn_string;
-        i = 0;
-
-        /* Leave room for a final NULL in alpn_list */
-        while( i < ALPN_LIST_SIZE - 1 && *p != '\0' )
-        {
-            alpn_list[i++] = p;
-
-            /* Terminate the current string and move on to next one */
-            while( *p != ',' && *p != '\0' )
-                p++;
-            if( *p == ',' )
-                *p++ = '\0';
-        }
-    }
-#endif /* MBEDTLS_SSL_ALPN */
-
-    /*
-     * 0. Initialize the RNG and the session data
-     */
-    mbedtls_printf( "\n  . Seeding the random number generator..." );
-    fflush( stdout );
-
-    ret = rng_seed( &rng, opt.reproducible, pers );
-    if( ret != 0 )
-        goto exit;
-    mbedtls_printf( " ok\n" );
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    /*
-     * 1.1. Load the trusted CA
-     */
-    mbedtls_printf( "  . Loading the CA root certificate ..." );
-    fflush( stdout );
-
-    if( strcmp( opt.ca_path, "none" ) == 0 ||
-        strcmp( opt.ca_file, "none" ) == 0 )
-    {
-        ret = 0;
-    }
-    else
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.ca_path ) )
-        ret = mbedtls_x509_crt_parse_path( &cacert, opt.ca_path );
-    else if( strlen( opt.ca_file ) )
-        ret = mbedtls_x509_crt_parse_file( &cacert, opt.ca_file );
-    else
-#endif
-#if defined(MBEDTLS_CERTS_C)
-    {
-#if defined(MBEDTLS_PEM_PARSE_C)
-        for( i = 0; mbedtls_test_cas[i] != NULL; i++ )
-        {
-            ret = mbedtls_x509_crt_parse( &cacert,
-                                  (const unsigned char *) mbedtls_test_cas[i],
-                                  mbedtls_test_cas_len[i] );
-            if( ret != 0 )
-                break;
-        }
-        if( ret == 0 )
-#endif /* MBEDTLS_PEM_PARSE_C */
-        for( i = 0; mbedtls_test_cas_der[i] != NULL; i++ )
-        {
-            ret = mbedtls_x509_crt_parse_der( &cacert,
-                         (const unsigned char *) mbedtls_test_cas_der[i],
-                         mbedtls_test_cas_der_len[i] );
-            if( ret != 0 )
-                break;
-        }
-    }
-#else
-    {
-        ret = 1;
-        mbedtls_printf( "MBEDTLS_CERTS_C not defined." );
-    }
-#endif /* MBEDTLS_CERTS_C */
-    if( ret < 0 )
-    {
-        mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok (%d skipped)\n", ret );
-
-    /*
-     * 1.2. Load own certificate and private key
-     */
-    mbedtls_printf( "  . Loading the server cert. and key..." );
-    fflush( stdout );
-
-#if defined(MBEDTLS_FS_IO)
-    if( strlen( opt.crt_file ) && strcmp( opt.crt_file, "none" ) != 0 )
-    {
-        key_cert_init++;
-        if( ( ret = mbedtls_x509_crt_parse_file( &srvcert, opt.crt_file ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse_file returned -0x%x\n\n",
-                    (unsigned int) -ret );
-            goto exit;
-        }
-    }
-    if( strlen( opt.key_file ) && strcmp( opt.key_file, "none" ) != 0 )
-    {
-        key_cert_init++;
-        if( ( ret = mbedtls_pk_parse_keyfile( &pkey, opt.key_file,
-                                              opt.key_pwd ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  mbedtls_pk_parse_keyfile returned -0x%x\n\n", (unsigned int) -ret );
-            goto exit;
-        }
-    }
-    if( key_cert_init == 1 )
-    {
-        mbedtls_printf( " failed\n  !  crt_file without key_file or vice-versa\n\n" );
-        goto exit;
-    }
-
-    if( strlen( opt.crt_file2 ) && strcmp( opt.crt_file2, "none" ) != 0 )
-    {
-        key_cert_init2++;
-        if( ( ret = mbedtls_x509_crt_parse_file( &srvcert2, opt.crt_file2 ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse_file(2) returned -0x%x\n\n",
-                    (unsigned int) -ret );
-            goto exit;
-        }
-    }
-    if( strlen( opt.key_file2 ) && strcmp( opt.key_file2, "none" ) != 0 )
-    {
-        key_cert_init2++;
-        if( ( ret = mbedtls_pk_parse_keyfile( &pkey2, opt.key_file2,
-                                              opt.key_pwd2 ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  mbedtls_pk_parse_keyfile(2) returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-    }
-    if( key_cert_init2 == 1 )
-    {
-        mbedtls_printf( " failed\n  !  crt_file2 without key_file2 or vice-versa\n\n" );
-        goto exit;
-    }
-#endif
-    if( key_cert_init == 0 &&
-        strcmp( opt.crt_file, "none" ) != 0 &&
-        strcmp( opt.key_file, "none" ) != 0 &&
-        key_cert_init2 == 0 &&
-        strcmp( opt.crt_file2, "none" ) != 0 &&
-        strcmp( opt.key_file2, "none" ) != 0 )
-    {
-#if !defined(MBEDTLS_CERTS_C)
-        mbedtls_printf( "Not certificated or key provided, and \nMBEDTLS_CERTS_C not defined!\n" );
-        goto exit;
-#else
-#if defined(MBEDTLS_RSA_C)
-        if( ( ret = mbedtls_x509_crt_parse( &srvcert,
-                                    (const unsigned char *) mbedtls_test_srv_crt_rsa,
-                                    mbedtls_test_srv_crt_rsa_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-        if( ( ret = mbedtls_pk_parse_key( &pkey,
-                                  (const unsigned char *) mbedtls_test_srv_key_rsa,
-                                  mbedtls_test_srv_key_rsa_len, NULL, 0 ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  mbedtls_pk_parse_key returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-        key_cert_init = 2;
-#endif /* MBEDTLS_RSA_C */
-#if defined(MBEDTLS_ECDSA_C)
-        if( ( ret = mbedtls_x509_crt_parse( &srvcert2,
-                                    (const unsigned char *) mbedtls_test_srv_crt_ec,
-                                    mbedtls_test_srv_crt_ec_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  x509_crt_parse2 returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-        if( ( ret = mbedtls_pk_parse_key( &pkey2,
-                                  (const unsigned char *) mbedtls_test_srv_key_ec,
-                                  mbedtls_test_srv_key_ec_len, NULL, 0 ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  !  pk_parse_key2 returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-        key_cert_init2 = 2;
-#endif /* MBEDTLS_ECDSA_C */
-#endif /* MBEDTLS_CERTS_C */
-    }
-
-    mbedtls_printf( " ok\n" );
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO)
-    if( opt.dhm_file != NULL )
-    {
-        mbedtls_printf( "  . Loading DHM parameters..." );
-        fflush( stdout );
-
-        if( ( ret = mbedtls_dhm_parse_dhmfile( &dhm, opt.dhm_file ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_dhm_parse_dhmfile returned -0x%04X\n\n",
-                     (unsigned int) -ret );
-            goto exit;
-        }
-
-        mbedtls_printf( " ok\n" );
-    }
-#endif
-
-#if defined(SNI_OPTION)
-    if( opt.sni != NULL )
-    {
-        mbedtls_printf( "  . Setting up SNI information..." );
-        fflush( stdout );
-
-        if( ( sni_info = sni_parse( opt.sni ) ) == NULL )
-        {
-            mbedtls_printf( " failed\n" );
-            goto exit;
-        }
-
-        mbedtls_printf( " ok\n" );
-    }
-#endif /* SNI_OPTION */
-
-    /*
-     * 2. Setup the listening TCP socket
-     */
-    mbedtls_printf( "  . Bind on %s://%s:%s/ ...",
-            opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ? "tcp" : "udp",
-            opt.server_addr ? opt.server_addr : "*",
-            opt.server_port );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_bind( &listen_fd, opt.server_addr, opt.server_port,
-                          opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM ?
-                          MBEDTLS_NET_PROTO_TCP : MBEDTLS_NET_PROTO_UDP ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_net_bind returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 3. Setup stuff
-     */
-    mbedtls_printf( "  . Setting up the SSL/TLS structure..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_ssl_config_defaults( &conf,
-                    MBEDTLS_SSL_IS_SERVER,
-                    opt.transport,
-                    MBEDTLS_SSL_PRESET_DEFAULT ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_config_defaults returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    /* The default algorithms profile disables SHA-1, but our tests still
-       rely on it heavily. Hence we allow it here. A real-world server
-       should use the default profile unless there is a good reason not to. */
-    if( opt.allow_sha1 > 0 )
-    {
-        crt_profile_for_test.allowed_mds |= MBEDTLS_X509_ID_FLAG( MBEDTLS_MD_SHA1 );
-        mbedtls_ssl_conf_cert_profile( &conf, &crt_profile_for_test );
-        mbedtls_ssl_conf_sig_hashes( &conf, ssl_sig_hashes_for_test );
-    }
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-    if( opt.auth_mode != DFL_AUTH_MODE )
-        mbedtls_ssl_conf_authmode( &conf, opt.auth_mode );
-
-    if( opt.cert_req_ca_list != DFL_CERT_REQ_CA_LIST )
-        mbedtls_ssl_conf_cert_req_ca_list( &conf, opt.cert_req_ca_list );
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( opt.hs_to_min != DFL_HS_TO_MIN || opt.hs_to_max != DFL_HS_TO_MAX )
-        mbedtls_ssl_conf_handshake_timeout( &conf, opt.hs_to_min, opt.hs_to_max );
-
-    if( opt.dgram_packing != DFL_DGRAM_PACKING )
-        mbedtls_ssl_set_datagram_packing( &ssl, opt.dgram_packing );
-#endif /* MBEDTLS_SSL_PROTO_DTLS */
-
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    if( ( ret = mbedtls_ssl_conf_max_frag_len( &conf, opt.mfl_code ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_max_frag_len returned %d\n\n", ret );
-        goto exit;
-    }
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    if( opt.cid_enabled == 1 || opt.cid_enabled_renego == 1 )
-    {
-        if( opt.cid_enabled == 1        &&
-            opt.cid_enabled_renego == 1 &&
-            cid_len != cid_renego_len )
-        {
-            mbedtls_printf( "CID length must not change during renegotiation\n" );
-            goto usage;
-        }
-
-        if( opt.cid_enabled == 1 )
-            ret = mbedtls_ssl_conf_cid( &conf, cid_len,
-                                        MBEDTLS_SSL_UNEXPECTED_CID_IGNORE );
-        else
-            ret = mbedtls_ssl_conf_cid( &conf, cid_renego_len,
-                                        MBEDTLS_SSL_UNEXPECTED_CID_IGNORE );
-
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_cid_len returned -%#04x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_SSL_DTLS_SRTP)
-    const mbedtls_ssl_srtp_profile forced_profile[] = { opt.force_srtp_profile, MBEDTLS_TLS_SRTP_UNSET };
-    if( opt.use_srtp == 1 )
-    {
-        if( opt.force_srtp_profile != 0 )
-        {
-            ret = mbedtls_ssl_conf_dtls_srtp_protection_profiles( &conf, forced_profile );
-        }
-        else
-        {
-            ret = mbedtls_ssl_conf_dtls_srtp_protection_profiles( &conf, default_profiles );
-        }
-
-        if( ret != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_dtls_srtp_protection_profiles returned %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_ssl_conf_srtp_mki_value_supported( &conf,
-                                                   opt.support_mki ?
-                                                   MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED :
-                                                   MBEDTLS_SSL_DTLS_SRTP_MKI_UNSUPPORTED );
-
-    }
-    else if( opt.force_srtp_profile != 0 )
-    {
-        mbedtls_printf( " failed\n  ! must enable use_srtp to force srtp profile\n\n" );
-        goto exit;
-    }
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-
-#if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    if( opt.trunc_hmac != DFL_TRUNC_HMAC )
-        mbedtls_ssl_conf_truncated_hmac( &conf, opt.trunc_hmac );
-#endif
-
-#if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-    if( opt.extended_ms != DFL_EXTENDED_MS )
-        mbedtls_ssl_conf_extended_master_secret( &conf, opt.extended_ms );
-#endif
-
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    if( opt.etm != DFL_ETM )
-        mbedtls_ssl_conf_encrypt_then_mac( &conf, opt.etm );
-#endif
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-    if( opt.eap_tls != 0 )
-    {
-        mbedtls_ssl_conf_export_keys_ext_cb( &conf, eap_tls_key_derivation,
-                                             &eap_tls_keying );
-    }
-    else if( opt.nss_keylog != 0 )
-    {
-        mbedtls_ssl_conf_export_keys_ext_cb( &conf,
-                                             nss_keylog_export,
-                                             NULL );
-    }
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-    else if( opt.use_srtp != 0 )
-    {
-        mbedtls_ssl_conf_export_keys_ext_cb( &conf, dtls_srtp_key_derivation,
-                                             &dtls_srtp_keying );
-    }
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_SSL_ALPN)
-    if( opt.alpn_string != NULL )
-        if( ( ret = mbedtls_ssl_conf_alpn_protocols( &conf, alpn_list ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_alpn_protocols returned %d\n\n", ret );
-            goto exit;
-        }
-#endif
-
-    if (opt.reproducible)
-    {
-#if defined(MBEDTLS_HAVE_TIME)
-#if defined(MBEDTLS_PLATFORM_TIME_ALT)
-        mbedtls_platform_set_time( dummy_constant_time );
-#else
-        fprintf( stderr, "Warning: reproducible option used without constant time\n" );
-#endif
-#endif  /* MBEDTLS_HAVE_TIME */
-    }
-    mbedtls_ssl_conf_rng( &conf, rng_get, &rng );
-    mbedtls_ssl_conf_dbg( &conf, my_debug, stdout );
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-    if( opt.cache_max != -1 )
-        mbedtls_ssl_cache_set_max_entries( &cache, opt.cache_max );
-
-    if( opt.cache_timeout != -1 )
-        mbedtls_ssl_cache_set_timeout( &cache, opt.cache_timeout );
-
-    mbedtls_ssl_conf_session_cache( &conf, &cache,
-                                   mbedtls_ssl_cache_get,
-                                   mbedtls_ssl_cache_set );
-#endif
-
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    if( opt.tickets == MBEDTLS_SSL_SESSION_TICKETS_ENABLED )
-    {
-        if( ( ret = mbedtls_ssl_ticket_setup( &ticket_ctx,
-                        rng_get, &rng,
-                        MBEDTLS_CIPHER_AES_256_GCM,
-                        opt.ticket_timeout ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_ticket_setup returned %d\n\n", ret );
-            goto exit;
-        }
-
-        mbedtls_ssl_conf_session_tickets_cb( &conf,
-                mbedtls_ssl_ticket_write,
-                mbedtls_ssl_ticket_parse,
-                &ticket_ctx );
-    }
-#endif
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-#if defined(MBEDTLS_SSL_COOKIE_C)
-        if( opt.cookies > 0 )
-        {
-            if( ( ret = mbedtls_ssl_cookie_setup( &cookie_ctx,
-                                                  rng_get, &rng ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_cookie_setup returned %d\n\n", ret );
-                goto exit;
-            }
-
-            mbedtls_ssl_conf_dtls_cookies( &conf, mbedtls_ssl_cookie_write, mbedtls_ssl_cookie_check,
-                                       &cookie_ctx );
-        }
-        else
-#endif /* MBEDTLS_SSL_COOKIE_C */
-#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
-        if( opt.cookies == 0 )
-        {
-            mbedtls_ssl_conf_dtls_cookies( &conf, NULL, NULL, NULL );
-        }
-        else
-#endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */
-        {
-            ; /* Nothing to do */
-        }
-
-#if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
-        if( opt.anti_replay != DFL_ANTI_REPLAY )
-            mbedtls_ssl_conf_dtls_anti_replay( &conf, opt.anti_replay );
-#endif
-
-#if defined(MBEDTLS_SSL_DTLS_BADMAC_LIMIT)
-        if( opt.badmac_limit != DFL_BADMAC_LIMIT )
-            mbedtls_ssl_conf_dtls_badmac_limit( &conf, opt.badmac_limit );
-#endif
-    }
-#endif /* MBEDTLS_SSL_PROTO_DTLS */
-
-    if( opt.force_ciphersuite[0] != DFL_FORCE_CIPHER )
-        mbedtls_ssl_conf_ciphersuites( &conf, opt.force_ciphersuite );
-
-#if defined(MBEDTLS_ARC4_C)
-    if( opt.arc4 != DFL_ARC4 )
-        mbedtls_ssl_conf_arc4_support( &conf, opt.arc4 );
-#endif
-
-    if( opt.version_suites != NULL )
-    {
-        mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[0],
-                                          MBEDTLS_SSL_MAJOR_VERSION_3,
-                                          MBEDTLS_SSL_MINOR_VERSION_0 );
-        mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[1],
-                                          MBEDTLS_SSL_MAJOR_VERSION_3,
-                                          MBEDTLS_SSL_MINOR_VERSION_1 );
-        mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[2],
-                                          MBEDTLS_SSL_MAJOR_VERSION_3,
-                                          MBEDTLS_SSL_MINOR_VERSION_2 );
-        mbedtls_ssl_conf_ciphersuites_for_version( &conf, version_suites[3],
-                                          MBEDTLS_SSL_MAJOR_VERSION_3,
-                                          MBEDTLS_SSL_MINOR_VERSION_3 );
-    }
-
-    if( opt.allow_legacy != DFL_ALLOW_LEGACY )
-        mbedtls_ssl_conf_legacy_renegotiation( &conf, opt.allow_legacy );
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-    mbedtls_ssl_conf_renegotiation( &conf, opt.renegotiation );
-
-    if( opt.renego_delay != DFL_RENEGO_DELAY )
-        mbedtls_ssl_conf_renegotiation_enforced( &conf, opt.renego_delay );
-
-    if( opt.renego_period != DFL_RENEGO_PERIOD )
-    {
-        PUT_UINT64_BE( renego_period, opt.renego_period, 0 );
-        mbedtls_ssl_conf_renegotiation_period( &conf, renego_period );
-    }
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    if( strcmp( opt.ca_path, "none" ) != 0 &&
-        strcmp( opt.ca_file, "none" ) != 0 )
-    {
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-        if( opt.ca_callback != 0 )
-            mbedtls_ssl_conf_ca_cb( &conf, ca_callback, &cacert);
-        else
-#endif
-            mbedtls_ssl_conf_ca_chain( &conf, &cacert, NULL );
-    }
-    if( key_cert_init )
-    {
-        mbedtls_pk_context *pk = &pkey;
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if( opt.async_private_delay1 >= 0 )
-        {
-            ret = ssl_async_set_key( &ssl_async_keys, &srvcert, pk, 0,
-                                     opt.async_private_delay1 );
-            if( ret < 0 )
-            {
-                mbedtls_printf( "  Test error: ssl_async_set_key failed (%d)\n",
-                                ret );
-                goto exit;
-            }
-            pk = NULL;
-        }
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-        if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert, pk ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-    if( key_cert_init2 )
-    {
-        mbedtls_pk_context *pk = &pkey2;
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if( opt.async_private_delay2 >= 0 )
-        {
-            ret = ssl_async_set_key( &ssl_async_keys, &srvcert2, pk, 0,
-                                     opt.async_private_delay2 );
-            if( ret < 0 )
-            {
-                mbedtls_printf( "  Test error: ssl_async_set_key failed (%d)\n",
-                                ret );
-                goto exit;
-            }
-            pk = NULL;
-        }
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-        if( ( ret = mbedtls_ssl_conf_own_cert( &conf, &srvcert2, pk ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_own_cert returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    if( opt.async_operations[0] != '-' )
-    {
-        mbedtls_ssl_async_sign_t *sign = NULL;
-        mbedtls_ssl_async_decrypt_t *decrypt = NULL;
-        const char *r;
-        for( r = opt.async_operations; *r; r++ )
-        {
-            switch( *r )
-            {
-            case 'd':
-                decrypt = ssl_async_decrypt;
-                break;
-            case 's':
-                sign = ssl_async_sign;
-                break;
-            }
-        }
-        ssl_async_keys.inject_error = ( opt.async_private_error < 0 ?
-                                        - opt.async_private_error :
-                                        opt.async_private_error );
-        ssl_async_keys.f_rng = rng_get;
-        ssl_async_keys.p_rng = &rng;
-        mbedtls_ssl_conf_async_private_cb( &conf,
-                                           sign,
-                                           decrypt,
-                                           ssl_async_resume,
-                                           ssl_async_cancel,
-                                           &ssl_async_keys );
-    }
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(SNI_OPTION)
-    if( opt.sni != NULL )
-    {
-        mbedtls_ssl_conf_sni( &conf, sni_callback, sni_info );
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if( opt.async_private_delay2 >= 0 )
-        {
-            sni_entry *cur;
-            for( cur = sni_info; cur != NULL; cur = cur->next )
-            {
-                ret = ssl_async_set_key( &ssl_async_keys,
-                                         cur->cert, cur->key, 1,
-                                         opt.async_private_delay2 );
-                if( ret < 0 )
-                {
-                    mbedtls_printf( "  Test error: ssl_async_set_key failed (%d)\n",
-                                    ret );
-                    goto exit;
-                }
-                cur->key = NULL;
-            }
-        }
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-    }
-#endif
-
-#if defined(MBEDTLS_ECP_C)
-    if( opt.curves != NULL &&
-        strcmp( opt.curves, "default" ) != 0 )
-    {
-        mbedtls_ssl_conf_curves( &conf, curve_list );
-    }
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-
-    if( strlen( opt.psk ) != 0 && strlen( opt.psk_identity ) != 0 )
-    {
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        if( opt.psk_opaque != 0 )
-        {
-            /* The algorithm has already been determined earlier. */
-            status = psa_setup_psk_key_slot( &psk_slot, alg, psk, psk_len );
-            if( status != PSA_SUCCESS )
-            {
-                fprintf( stderr, "SETUP FAIL\n" );
-                ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
-                goto exit;
-            }
-            if( ( ret = mbedtls_ssl_conf_psk_opaque( &conf, psk_slot,
-                             (const unsigned char *) opt.psk_identity,
-                             strlen( opt.psk_identity ) ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_conf_psk_opaque returned %d\n\n",
-                                ret );
-                goto exit;
-            }
-        }
-        else
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-        if( psk_len > 0 )
-        {
-            ret = mbedtls_ssl_conf_psk( &conf, psk, psk_len,
-                                     (const unsigned char *) opt.psk_identity,
-                                     strlen( opt.psk_identity ) );
-            if( ret != 0 )
-            {
-                mbedtls_printf( "  failed\n  mbedtls_ssl_conf_psk returned -0x%04X\n\n", (unsigned int) -ret );
-                goto exit;
-            }
-        }
-    }
-
-    if( opt.psk_list != NULL )
-    {
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-        if( opt.psk_list_opaque != 0 )
-        {
-            psk_entry *cur_psk;
-            for( cur_psk = psk_info; cur_psk != NULL; cur_psk = cur_psk->next )
-            {
-
-                status = psa_setup_psk_key_slot( &cur_psk->slot, alg,
-                                                 cur_psk->key,
-                                                 cur_psk->key_len );
-                if( status != PSA_SUCCESS )
-                {
-                    ret = MBEDTLS_ERR_SSL_HW_ACCEL_FAILED;
-                    goto exit;
-                }
-            }
-        }
-#endif /* MBEDTLS_USE_PSA_CRYPTO */
-
-        mbedtls_ssl_conf_psk_cb( &conf, psk_callback, psk_info );
-    }
-#endif
-
-#if defined(MBEDTLS_DHM_C)
-    /*
-     * Use different group than default DHM group
-     */
-#if defined(MBEDTLS_FS_IO)
-    if( opt.dhm_file != NULL )
-        ret = mbedtls_ssl_conf_dh_param_ctx( &conf, &dhm );
-#endif
-    if( ret != 0 )
-    {
-        mbedtls_printf( "  failed\n  mbedtls_ssl_conf_dh_param returned -0x%04X\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-#endif
-
-    if( opt.min_version != DFL_MIN_VERSION )
-        mbedtls_ssl_conf_min_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3, opt.min_version );
-
-    if( opt.max_version != DFL_MIN_VERSION )
-        mbedtls_ssl_conf_max_version( &conf, MBEDTLS_SSL_MAJOR_VERSION_3, opt.max_version );
-
-    if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    io_ctx.ssl = &ssl;
-    io_ctx.net = &client_fd;
-    mbedtls_ssl_set_bio( &ssl, &io_ctx, send_cb, recv_cb,
-                         opt.nbio == 0 ? recv_timeout_cb : NULL );
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        if( ( ret = mbedtls_ssl_set_cid( &ssl, opt.cid_enabled,
-                                         cid, cid_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_cid returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( opt.dtls_mtu != DFL_DTLS_MTU )
-        mbedtls_ssl_set_mtu( &ssl, opt.dtls_mtu );
-#endif
-
-#if defined(MBEDTLS_TIMING_C)
-    mbedtls_ssl_set_timer_cb( &ssl, &timer, mbedtls_timing_set_delay,
-                                            mbedtls_timing_get_delay );
-#endif
-
-    mbedtls_printf( " ok\n" );
-
-reset:
-#if !defined(_WIN32)
-    if( received_sigterm )
-    {
-        mbedtls_printf( " interrupted by SIGTERM (not in net_accept())\n" );
-        if( ret == MBEDTLS_ERR_NET_INVALID_CONTEXT )
-            ret = 0;
-
-        goto exit;
-    }
-#endif
-
-    if( ret == MBEDTLS_ERR_SSL_CLIENT_RECONNECT )
-    {
-        mbedtls_printf( "  ! Client initiated reconnection from same port\n" );
-        goto handshake;
-    }
-
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf );
-    }
-#endif
-
-    mbedtls_net_free( &client_fd );
-
-    mbedtls_ssl_session_reset( &ssl );
-
-    /*
-     * 3. Wait until a client connects
-     */
-    mbedtls_printf( "  . Waiting for a remote connection ..." );
-    fflush( stdout );
-
-    if( ( ret = mbedtls_net_accept( &listen_fd, &client_fd,
-                    client_ip, sizeof( client_ip ), &cliip_len ) ) != 0 )
-    {
-#if !defined(_WIN32)
-        if( received_sigterm )
-        {
-            mbedtls_printf( " interrupted by SIGTERM (in net_accept())\n" );
-            if( ret == MBEDTLS_ERR_NET_ACCEPT_FAILED )
-                ret = 0;
-
-            goto exit;
-        }
-#endif
-
-        mbedtls_printf( " failed\n  ! mbedtls_net_accept returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    if( opt.nbio > 0 )
-        ret = mbedtls_net_set_nonblock( &client_fd );
-    else
-        ret = mbedtls_net_set_block( &client_fd );
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! net_set_(non)block() returned -0x%x\n\n", (unsigned int) -ret );
-        goto exit;
-    }
-
-    mbedtls_ssl_conf_read_timeout( &conf, opt.read_timeout );
-
-#if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        if( ( ret = mbedtls_ssl_set_client_transport_id( &ssl,
-                        client_ip, cliip_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_client_transport_id() returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */
-
-#if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if( opt.ecjpake_pw != DFL_ECJPAKE_PW )
-    {
-        if( ( ret = mbedtls_ssl_set_hs_ecjpake_password( &ssl,
-                        (const unsigned char *) opt.ecjpake_pw,
-                                        strlen( opt.ecjpake_pw ) ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_hs_ecjpake_password returned %d\n\n", ret );
-            goto exit;
-        }
-    }
-#endif
-
-    mbedtls_printf( " ok\n" );
-
-    /*
-     * 4. Handshake
-     */
-handshake:
-    mbedtls_printf( "  . Performing the SSL/TLS handshake..." );
-    fflush( stdout );
-
-    while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
-    {
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if( ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS &&
-            ssl_async_keys.inject_error == SSL_ASYNC_INJECT_ERROR_CANCEL )
-        {
-            mbedtls_printf( " cancelling on injected error\n" );
-            break;
-        }
-#endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-
-        if( ! mbedtls_status_is_ssl_in_progress( ret ) )
-            break;
-
-        /* For event-driven IO, wait for socket to become available */
-        if( opt.event == 1 /* level triggered IO */ )
-        {
-#if defined(MBEDTLS_TIMING_C)
-            ret = idle( &client_fd, &timer, ret );
-#else
-            ret = idle( &client_fd, ret );
-#endif
-            if( ret != 0 )
-                goto reset;
-        }
-    }
-
-    if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED )
-    {
-        mbedtls_printf( " hello verification requested\n" );
-        ret = 0;
-        goto reset;
-    }
-    else if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n", (unsigned int) -ret );
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-        if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
-        {
-            char vrfy_buf[512];
-            flags = mbedtls_ssl_get_verify_result( &ssl );
-
-            mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), "  ! ", flags );
-
-            mbedtls_printf( "%s\n", vrfy_buf );
-        }
-#endif
-
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if( opt.async_private_error < 0 )
-            /* Injected error only the first time round, to test reset */
-            ssl_async_keys.inject_error = SSL_ASYNC_INJECT_ERROR_NONE;
-#endif
-        goto reset;
-    }
-    else /* ret == 0 */
-    {
-        mbedtls_printf( " ok\n    [ Protocol is %s ]\n    [ Ciphersuite is %s ]\n",
-                mbedtls_ssl_get_version( &ssl ), mbedtls_ssl_get_ciphersuite( &ssl ) );
-    }
-
-    if( ( ret = mbedtls_ssl_get_record_expansion( &ssl ) ) >= 0 )
-        mbedtls_printf( "    [ Record expansion is %d ]\n", ret );
-    else
-        mbedtls_printf( "    [ Record expansion is unknown (compression) ]\n" );
-
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    mbedtls_printf( "    [ Maximum input fragment length is %u ]\n",
-                    (unsigned int) mbedtls_ssl_get_input_max_frag_len( &ssl ) );
-    mbedtls_printf( "    [ Maximum output fragment length is %u ]\n",
-                    (unsigned int) mbedtls_ssl_get_output_max_frag_len( &ssl ) );
-#endif
-
-#if defined(MBEDTLS_SSL_ALPN)
-    if( opt.alpn_string != NULL )
-    {
-        const char *alp = mbedtls_ssl_get_alpn_protocol( &ssl );
-        mbedtls_printf( "    [ Application Layer Protocol is %s ]\n",
-                alp ? alp : "(none)" );
-    }
-#endif
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    /*
-     * 5. Verify the client certificate
-     */
-    mbedtls_printf( "  . Verifying peer X.509 certificate..." );
-
-    if( ( flags = mbedtls_ssl_get_verify_result( &ssl ) ) != 0 )
-    {
-        char vrfy_buf[512];
-
-        mbedtls_printf( " failed\n" );
-
-        mbedtls_x509_crt_verify_info( vrfy_buf, sizeof( vrfy_buf ), "  ! ", flags );
-
-        mbedtls_printf( "%s\n", vrfy_buf );
-    }
-    else
-        mbedtls_printf( " ok\n" );
-
-    if( mbedtls_ssl_get_peer_cert( &ssl ) != NULL )
-    {
-        char crt_buf[512];
-
-        mbedtls_printf( "  . Peer certificate information    ...\n" );
-        mbedtls_x509_crt_info( crt_buf, sizeof( crt_buf ), "      ",
-                       mbedtls_ssl_get_peer_cert( &ssl ) );
-        mbedtls_printf( "%s\n", crt_buf );
-    }
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-    if( opt.eap_tls != 0 )
-    {
-        size_t j = 0;
-
-        if( ( ret = mbedtls_ssl_tls_prf( eap_tls_keying.tls_prf_type,
-                                         eap_tls_keying.master_secret,
-                                         sizeof( eap_tls_keying.master_secret ),
-                                         eap_tls_label,
-                                         eap_tls_keying.randbytes,
-                                         sizeof( eap_tls_keying.randbytes ),
-                                         eap_tls_keymaterial,
-                                         sizeof( eap_tls_keymaterial ) ) )
-                                         != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
-                            (unsigned int) -ret );
-            goto reset;
-        }
-
-        mbedtls_printf( "    EAP-TLS key material is:" );
-        for( j = 0; j < sizeof( eap_tls_keymaterial ); j++ )
-        {
-            if( j % 8 == 0 )
-                mbedtls_printf("\n    ");
-            mbedtls_printf("%02x ", eap_tls_keymaterial[j] );
-        }
-        mbedtls_printf("\n");
-
-        if( ( ret = mbedtls_ssl_tls_prf( eap_tls_keying.tls_prf_type, NULL, 0,
-                                         eap_tls_label,
-                                         eap_tls_keying.randbytes,
-                                         sizeof( eap_tls_keying.randbytes ),
-                                         eap_tls_iv,
-                                         sizeof( eap_tls_iv ) ) ) != 0 )
-         {
-             mbedtls_printf( " failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
-                             (unsigned int) -ret );
-             goto reset;
-         }
-
-        mbedtls_printf( "    EAP-TLS IV is:" );
-        for( j = 0; j < sizeof( eap_tls_iv ); j++ )
-        {
-            if( j % 8 == 0 )
-                mbedtls_printf("\n    ");
-            mbedtls_printf("%02x ", eap_tls_iv[j] );
-        }
-        mbedtls_printf("\n");
-    }
-
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-    else if( opt.use_srtp != 0  )
-    {
-        size_t j = 0;
-        mbedtls_dtls_srtp_info dtls_srtp_negotiation_result;
-        mbedtls_ssl_get_dtls_srtp_negotiation_result( &ssl, &dtls_srtp_negotiation_result );
-
-        if( dtls_srtp_negotiation_result.chosen_dtls_srtp_profile
-                                == MBEDTLS_TLS_SRTP_UNSET )
-        {
-            mbedtls_printf( "    Unable to negotiate "
-                            "the use of DTLS-SRTP\n" );
-        }
-        else
-        {
-            if( ( ret = mbedtls_ssl_tls_prf( dtls_srtp_keying.tls_prf_type,
-                                             dtls_srtp_keying.master_secret,
-                                             sizeof( dtls_srtp_keying.master_secret ),
-                                             dtls_srtp_label,
-                                             dtls_srtp_keying.randbytes,
-                                             sizeof( dtls_srtp_keying.randbytes ),
-                                             dtls_srtp_key_material,
-                                             sizeof( dtls_srtp_key_material ) ) )
-                                             != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_tls_prf returned -0x%x\n\n",
-                                (unsigned int) -ret );
-                goto exit;
-            }
-
-            mbedtls_printf( "    DTLS-SRTP key material is:" );
-            for( j = 0; j < sizeof( dtls_srtp_key_material ); j++ )
-            {
-                if( j % 8 == 0 )
-                    mbedtls_printf( "\n    " );
-                mbedtls_printf( "%02x ", dtls_srtp_key_material[j] );
-            }
-            mbedtls_printf( "\n" );
-
-            /* produce a less readable output used to perform automatic checks
-             * - compare client and server output
-             * - interop test with openssl which client produces this kind of output
-             */
-            mbedtls_printf( "    Keying material: " );
-            for( j = 0; j < sizeof( dtls_srtp_key_material ); j++ )
-            {
-                mbedtls_printf( "%02X", dtls_srtp_key_material[j] );
-            }
-            mbedtls_printf( "\n" );
-
-            if ( dtls_srtp_negotiation_result.mki_len > 0 )
-            {
-                mbedtls_printf( "    DTLS-SRTP mki value: " );
-                for( j = 0; j < dtls_srtp_negotiation_result.mki_len; j++ )
-                {
-                    mbedtls_printf( "%02X", dtls_srtp_negotiation_result.mki_value[j] );
-                }
-            }
-            else
-            {
-                mbedtls_printf( "    DTLS-SRTP no mki value negotiated" );
-            }
-            mbedtls_printf( "\n" );
-
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    ret = report_cid_usage( &ssl, "initial handshake" );
-    if( ret != 0 )
-        goto exit;
-
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        if( ( ret = mbedtls_ssl_set_cid( &ssl, opt.cid_enabled_renego,
-                                         cid_renego, cid_renego_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_set_cid returned %d\n\n",
-                            ret );
-            goto exit;
-        }
-    }
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-#if defined(MBEDTLS_MEMORY_DEBUG)
-    mbedtls_memory_buffer_alloc_cur_get( &current_heap_memory, &heap_blocks );
-    mbedtls_memory_buffer_alloc_max_get( &peak_heap_memory, &heap_blocks );
-    mbedtls_printf( "Heap memory usage after handshake: %lu bytes. Peak memory usage was %lu\n",
-                    (unsigned long) current_heap_memory, (unsigned long) peak_heap_memory );
-#endif  /* MBEDTLS_MEMORY_DEBUG */
-
-    if( opt.exchanges == 0 )
-        goto close_notify;
-
-    exchanges_left = opt.exchanges;
-data_exchange:
-    /*
-     * 6. Read the HTTP Request
-     */
-    mbedtls_printf( "  < Read from client:" );
-    fflush( stdout );
-
-    /*
-     * TLS and DTLS need different reading styles (stream vs datagram)
-     */
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM )
-    {
-        do
-        {
-            int terminated = 0;
-            len = opt.buffer_size - 1;
-            memset( buf, 0, opt.buffer_size );
-            ret = mbedtls_ssl_read( &ssl, buf, len );
-
-            if( mbedtls_status_is_ssl_in_progress( ret ) )
-            {
-                if( opt.event == 1 /* level triggered IO */ )
-                {
-#if defined(MBEDTLS_TIMING_C)
-                    idle( &client_fd, &timer, ret );
-#else
-                    idle( &client_fd, ret );
-#endif
-                }
-
-                continue;
-            }
-
-            if( ret <= 0 )
-            {
-                switch( ret )
-                {
-                    case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                        mbedtls_printf( " connection was closed gracefully\n" );
-                        goto close_notify;
-
-                    case 0:
-                    case MBEDTLS_ERR_NET_CONN_RESET:
-                        mbedtls_printf( " connection was reset by peer\n" );
-                        ret = MBEDTLS_ERR_NET_CONN_RESET;
-                        goto reset;
-
-                    default:
-                        mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret );
-                        goto reset;
-                }
-            }
-
-            if( mbedtls_ssl_get_bytes_avail( &ssl ) == 0 )
-            {
-                len = ret;
-                buf[len] = '\0';
-                mbedtls_printf( " %d bytes read\n\n%s\n", len, (char *) buf );
-
-                /* End of message should be detected according to the syntax of the
-                 * application protocol (eg HTTP), just use a dummy test here. */
-                if( buf[len - 1] == '\n' )
-                    terminated = 1;
-            }
-            else
-            {
-                int extra_len, ori_len;
-                unsigned char *larger_buf;
-
-                ori_len = ret;
-                extra_len = (int) mbedtls_ssl_get_bytes_avail( &ssl );
-
-                larger_buf = mbedtls_calloc( 1, ori_len + extra_len + 1 );
-                if( larger_buf == NULL )
-                {
-                    mbedtls_printf( "  ! memory allocation failed\n" );
-                    ret = 1;
-                    goto reset;
-                }
-
-                memset( larger_buf, 0, ori_len + extra_len );
-                memcpy( larger_buf, buf, ori_len );
-
-                /* This read should never fail and get the whole cached data */
-                ret = mbedtls_ssl_read( &ssl, larger_buf + ori_len, extra_len );
-                if( ret != extra_len ||
-                    mbedtls_ssl_get_bytes_avail( &ssl ) != 0 )
-                {
-                    mbedtls_printf( "  ! mbedtls_ssl_read failed on cached data\n" );
-                    ret = 1;
-                    goto reset;
-                }
-
-                larger_buf[ori_len + extra_len] = '\0';
-                mbedtls_printf( " %d bytes read (%d + %d)\n\n%s\n",
-                        ori_len + extra_len, ori_len, extra_len,
-                        (char *) larger_buf );
-
-                /* End of message should be detected according to the syntax of the
-                 * application protocol (eg HTTP), just use a dummy test here. */
-                if( larger_buf[ori_len + extra_len - 1] == '\n' )
-                    terminated = 1;
-
-                mbedtls_free( larger_buf );
-            }
-
-            if( terminated )
-            {
-                ret = 0;
-                break;
-            }
-        }
-        while( 1 );
-    }
-    else /* Not stream, so datagram */
-    {
-        len = opt.buffer_size - 1;
-        memset( buf, 0, opt.buffer_size );
-
-        do
-        {
-            /* Without the call to `mbedtls_ssl_check_pending`, it might
-             * happen that the client sends application data in the same
-             * datagram as the Finished message concluding the handshake.
-             * In this case, the application data would be ready to be
-             * processed while the underlying transport wouldn't signal
-             * any further incoming data.
-             *
-             * See the test 'Event-driven I/O: session-id resume, UDP packing'
-             * in tests/ssl-opt.sh.
-             */
-
-            /* For event-driven IO, wait for socket to become available */
-            if( mbedtls_ssl_check_pending( &ssl ) == 0 &&
-                opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &client_fd, &timer, MBEDTLS_ERR_SSL_WANT_READ );
-#else
-                idle( &client_fd, MBEDTLS_ERR_SSL_WANT_READ );
-#endif
-            }
-
-            ret = mbedtls_ssl_read( &ssl, buf, len );
-
-            /* Note that even if `mbedtls_ssl_check_pending` returns true,
-             * it can happen that the subsequent call to `mbedtls_ssl_read`
-             * returns `MBEDTLS_ERR_SSL_WANT_READ`, because the pending messages
-             * might be discarded (e.g. because they are retransmissions). */
-        }
-        while( mbedtls_status_is_ssl_in_progress( ret ) );
-
-        if( ret <= 0 )
-        {
-            switch( ret )
-            {
-                case MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY:
-                    mbedtls_printf( " connection was closed gracefully\n" );
-                    ret = 0;
-                    goto close_notify;
-
-                default:
-                    mbedtls_printf( " mbedtls_ssl_read returned -0x%x\n", (unsigned int) -ret );
-                    goto reset;
-            }
-        }
-
-        len = ret;
-        buf[len] = '\0';
-        mbedtls_printf( " %d bytes read\n\n%s", len, (char *) buf );
-        ret = 0;
-    }
-
-    /*
-     * 7a. Request renegotiation while client is waiting for input from us.
-     * (only on the first exchange, to be able to test retransmission)
-     */
-#if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( opt.renegotiate && exchanges_left == opt.exchanges )
-    {
-        mbedtls_printf( "  . Requestion renegotiation..." );
-        fflush( stdout );
-
-        while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 )
-        {
-            if( ! mbedtls_status_is_ssl_in_progress( ret ) )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_renegotiate returned %d\n\n", ret );
-                goto reset;
-            }
-
-            /* For event-driven IO, wait for socket to become available */
-            if( opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &client_fd, &timer, ret );
-#else
-                idle( &client_fd, ret );
-#endif
-            }
-        }
-
-        mbedtls_printf( " ok\n" );
-    }
-#endif /* MBEDTLS_SSL_RENEGOTIATION */
-
-#if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    ret = report_cid_usage( &ssl, "after renegotiation" );
-    if( ret != 0 )
-        goto exit;
-#endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
-
-    /*
-     * 7. Write the 200 Response
-     */
-    mbedtls_printf( "  > Write to client:" );
-    fflush( stdout );
-
-    len = sprintf( (char *) buf, HTTP_RESPONSE,
-                   mbedtls_ssl_get_ciphersuite( &ssl ) );
-
-    /* Add padding to the response to reach opt.response_size in length */
-    if( opt.response_size != DFL_RESPONSE_SIZE &&
-        len < opt.response_size )
-    {
-        memset( buf + len, 'B', opt.response_size - len );
-        len += opt.response_size - len;
-    }
-
-    /* Truncate if response size is smaller than the "natural" size */
-    if( opt.response_size != DFL_RESPONSE_SIZE &&
-        len > opt.response_size )
-    {
-        len = opt.response_size;
-
-        /* Still end with \r\n unless that's really not possible */
-        if( len >= 2 ) buf[len - 2] = '\r';
-        if( len >= 1 ) buf[len - 1] = '\n';
-    }
-
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_STREAM )
-    {
-        for( written = 0, frags = 0; written < len; written += ret, frags++ )
-        {
-            while( ( ret = mbedtls_ssl_write( &ssl, buf + written, len - written ) )
-                           <= 0 )
-            {
-                if( ret == MBEDTLS_ERR_NET_CONN_RESET )
-                {
-                    mbedtls_printf( " failed\n  ! peer closed the connection\n\n" );
-                    goto reset;
-                }
-
-                if( ! mbedtls_status_is_ssl_in_progress( ret ) )
-                {
-                    mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-                    goto reset;
-                }
-
-                /* For event-driven IO, wait for socket to become available */
-                if( opt.event == 1 /* level triggered IO */ )
-                {
-#if defined(MBEDTLS_TIMING_C)
-                    idle( &client_fd, &timer, ret );
-#else
-                    idle( &client_fd, ret );
-#endif
-                }
-            }
-        }
-    }
-    else /* Not stream, so datagram */
-    {
-        while( 1 )
-        {
-            ret = mbedtls_ssl_write( &ssl, buf, len );
-
-            if( ! mbedtls_status_is_ssl_in_progress( ret ) )
-                break;
-
-            /* For event-driven IO, wait for socket to become available */
-            if( opt.event == 1 /* level triggered IO */ )
-            {
-#if defined(MBEDTLS_TIMING_C)
-                idle( &client_fd, &timer, ret );
-#else
-                idle( &client_fd, ret );
-#endif
-            }
-        }
-
-        if( ret < 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_write returned %d\n\n", ret );
-            goto reset;
-        }
-
-        frags = 1;
-        written = ret;
-    }
-
-    buf[written] = '\0';
-    mbedtls_printf( " %d bytes written in %d fragments\n\n%s\n", written, frags, (char *) buf );
-    ret = 0;
-
-    /*
-     * 7b. Simulate serialize/deserialize and go back to data exchange
-     */
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-    if( opt.serialize != 0 )
-    {
-        size_t buf_len;
-
-        mbedtls_printf( "  . Serializing live connection..." );
-
-        ret = mbedtls_ssl_context_save( &ssl, NULL, 0, &buf_len );
-        if( ret != MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_context_save returned "
-                            "-0x%x\n\n", (unsigned int) -ret );
-
-            goto exit;
-        }
-
-        if( ( context_buf = mbedtls_calloc( 1, buf_len ) ) == NULL )
-        {
-            mbedtls_printf( " failed\n  ! Couldn't allocate buffer for "
-                            "serialized context" );
-
-            goto exit;
-        }
-        context_buf_len = buf_len;
-
-        if( ( ret = mbedtls_ssl_context_save( &ssl, context_buf,
-                                              buf_len, &buf_len ) ) != 0 )
-        {
-            mbedtls_printf( " failed\n  ! mbedtls_ssl_context_save returned "
-                            "-0x%x\n\n", (unsigned int) -ret );
-
-            goto exit;
-        }
-
-        mbedtls_printf( " ok\n" );
-
-        /* Save serialized context to the 'opt.context_file' as a base64 code */
-        if( 0 < strlen( opt.context_file ) )
-        {
-            FILE *b64_file;
-            uint8_t *b64_buf;
-            size_t b64_len;
-
-            mbedtls_printf( "  . Save serialized context to a file... " );
-
-            mbedtls_base64_encode( NULL, 0, &b64_len, context_buf, buf_len );
-
-            if( ( b64_buf = mbedtls_calloc( 1, b64_len ) ) == NULL )
-            {
-                mbedtls_printf( "failed\n  ! Couldn't allocate buffer for "
-                                "the base64 code\n" );
-                goto exit;
-            }
-
-            if( ( ret = mbedtls_base64_encode( b64_buf, b64_len, &b64_len,
-                                               context_buf, buf_len ) ) != 0 )
-            {
-                mbedtls_printf( "failed\n  ! mbedtls_base64_encode returned "
-                            "-0x%x\n", (unsigned int) -ret );
-                mbedtls_free( b64_buf );
-                goto exit;
-            }
-
-            if( ( b64_file = fopen( opt.context_file, "w" ) ) == NULL )
-            {
-                mbedtls_printf( "failed\n  ! Cannot open '%s' for writing.\n",
-                                opt.context_file );
-                mbedtls_free( b64_buf );
-                goto exit;
-            }
-
-            if( b64_len != fwrite( b64_buf, 1, b64_len, b64_file ) )
-            {
-                mbedtls_printf( "failed\n  ! fwrite(%ld bytes) failed\n",
-                                (long) b64_len );
-                mbedtls_free( b64_buf );
-                fclose( b64_file );
-                goto exit;
-            }
-
-            mbedtls_free( b64_buf );
-            fclose( b64_file );
-
-            mbedtls_printf( "ok\n" );
-        }
-
-        /*
-         * This simulates a workflow where you have a long-lived server
-         * instance, potentially with a pool of ssl_context objects, and you
-         * just want to re-use one while the connection is inactive: in that
-         * case you can just reset() it, and then it's ready to receive
-         * serialized data from another connection (or the same here).
-         */
-        if( opt.serialize == 1 )
-        {
-            /* nothing to do here, done by context_save() already */
-            mbedtls_printf( "  . Context has been reset... ok\n" );
-        }
-
-        /*
-         * This simulates a workflow where you have one server instance per
-         * connection, and want to release it entire when the connection is
-         * inactive, and spawn it again when needed again - this would happen
-         * between ssl_free() and ssl_init() below, together with any other
-         * teardown/startup code needed - for example, preparing the
-         * ssl_config again (see section 3 "setup stuff" in this file).
-         */
-        if( opt.serialize == 2 )
-        {
-            mbedtls_printf( "  . Freeing and reinitializing context..." );
-
-            mbedtls_ssl_free( &ssl );
-
-            mbedtls_ssl_init( &ssl );
-
-            if( ( ret = mbedtls_ssl_setup( &ssl, &conf ) ) != 0 )
-            {
-                mbedtls_printf( " failed\n  ! mbedtls_ssl_setup returned "
-                                "-0x%x\n\n", (unsigned int) -ret );
-                goto exit;
-            }
-
-            /*
-             * This illustrates the minimum amount of things you need to set
-             * up, however you could set up much more if desired, for example
-             * if you want to share your set up code between the case of
-             * establishing a new connection and this case.
-             */
-            if( opt.nbio == 2 )
-                mbedtls_ssl_set_bio( &ssl, &client_fd, delayed_send,
-                                     delayed_recv, NULL );
-            else
-                mbedtls_ssl_set_bio( &ssl, &client_fd, mbedtls_net_send,
-                            mbedtls_net_recv,
-                            opt.nbio == 0 ? mbedtls_net_recv_timeout : NULL );
-
-#if defined(MBEDTLS_TIMING_C)
-                mbedtls_ssl_set_timer_cb( &ssl, &timer,
-                                          mbedtls_timing_set_delay,
-                                          mbedtls_timing_get_delay );
-#endif /* MBEDTLS_TIMING_C */
-
-            mbedtls_printf( " ok\n" );
-        }
-
-        mbedtls_printf( "  . Deserializing connection..." );
-
-        if( ( ret = mbedtls_ssl_context_load( &ssl, context_buf,
-                                              buf_len ) ) != 0 )
-        {
-            mbedtls_printf( "failed\n  ! mbedtls_ssl_context_load returned "
-                            "-0x%x\n\n", (unsigned int) -ret );
-
-            goto exit;
-        }
-
-        mbedtls_free( context_buf );
-        context_buf = NULL;
-        context_buf_len = 0;
-
-        mbedtls_printf( " ok\n" );
-    }
-#endif /* MBEDTLS_SSL_CONTEXT_SERIALIZATION */
-
-    /*
-     * 7c. Continue doing data exchanges?
-     */
-    if( --exchanges_left > 0 )
-        goto data_exchange;
-
-    /*
-     * 8. Done, cleanly close the connection
-     */
-close_notify:
-    mbedtls_printf( "  . Closing the connection..." );
-
-    /* No error checking, the connection might be closed already */
-    do ret = mbedtls_ssl_close_notify( &ssl );
-    while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
-    ret = 0;
-
-    mbedtls_printf( " done\n" );
-
-    goto reset;
-
-    /*
-     * Cleanup and exit
-     */
-exit:
-#ifdef MBEDTLS_ERROR_C
-    if( ret != 0 )
-    {
-        char error_buf[100];
-        mbedtls_strerror( ret, error_buf, 100 );
-        mbedtls_printf("Last error was: -0x%X - %s\n\n", (unsigned int) -ret, error_buf );
-    }
-#endif
-
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-    {
-        mbedtls_printf( "  . Cleaning up..." );
-        fflush( stdout );
-    }
-
-    mbedtls_net_free( &client_fd );
-    mbedtls_net_free( &listen_fd );
-
-#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO)
-    mbedtls_dhm_free( &dhm );
-#endif
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-    mbedtls_x509_crt_free( &cacert );
-    mbedtls_x509_crt_free( &srvcert );
-    mbedtls_pk_free( &pkey );
-    mbedtls_x509_crt_free( &srvcert2 );
-    mbedtls_pk_free( &pkey2 );
-#endif
-#if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    for( i = 0; (size_t) i < ssl_async_keys.slots_used; i++ )
-    {
-        if( ssl_async_keys.slots[i].pk_owned )
-        {
-            mbedtls_pk_free( ssl_async_keys.slots[i].pk );
-            mbedtls_free( ssl_async_keys.slots[i].pk );
-            ssl_async_keys.slots[i].pk = NULL;
-        }
-    }
-#endif
-#if defined(SNI_OPTION)
-    sni_free( sni_info );
-#endif
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
-    ret = psk_free( psk_info );
-    if( ( ret != 0 ) && ( opt.query_config_mode == DFL_QUERY_CONFIG_MODE ) )
-        mbedtls_printf( "Failed to list of opaque PSKs - error was %d\n", ret );
-#endif
-#if defined(MBEDTLS_DHM_C) && defined(MBEDTLS_FS_IO)
-    mbedtls_dhm_free( &dhm );
-#endif
-
-#if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED) && \
-    defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( opt.psk_opaque != 0 )
-    {
-        /* This is ok even if the slot hasn't been
-         * initialized (we might have jumed here
-         * immediately because of bad cmd line params,
-         * for example). */
-        status = psa_destroy_key( psk_slot );
-        if( ( status != PSA_SUCCESS ) &&
-            ( opt.query_config_mode == DFL_QUERY_CONFIG_MODE ) )
-        {
-            mbedtls_printf( "Failed to destroy key slot %u - error was %d",
-                            (unsigned) psk_slot, (int) status );
-        }
-    }
-#endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED &&
-          MBEDTLS_USE_PSA_CRYPTO */
-
-    mbedtls_ssl_free( &ssl );
-    mbedtls_ssl_config_free( &conf );
-    rng_free( &rng );
-
-#if defined(MBEDTLS_SSL_CACHE_C)
-    mbedtls_ssl_cache_free( &cache );
-#endif
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    mbedtls_ssl_ticket_free( &ticket_ctx );
-#endif
-#if defined(MBEDTLS_SSL_COOKIE_C)
-    mbedtls_ssl_cookie_free( &cookie_ctx );
-#endif
-
-    mbedtls_free( buf );
-
-#if defined(MBEDTLS_SSL_CONTEXT_SERIALIZATION)
-    if( context_buf != NULL )
-        mbedtls_platform_zeroize( context_buf, context_buf_len );
-    mbedtls_free( context_buf );
-#endif
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    mbedtls_psa_crypto_free( );
-#endif
-
-#if defined(MBEDTLS_TEST_HOOKS)
-    /* Let test hooks detect errors such as resource leaks.
-     * Don't do it in query_config mode, because some test code prints
-     * information to stdout and this gets mixed with the regular output. */
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-    {
-        if( test_hooks_failure_detected( ) )
-        {
-            if( ret == 0 )
-                ret = 1;
-            mbedtls_printf( "Test hooks detected errors.\n" );
-        }
-    }
-    test_hooks_free( );
-#endif /* MBEDTLS_TEST_HOOKS */
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#if defined(MBEDTLS_MEMORY_DEBUG)
-    mbedtls_memory_buffer_alloc_status();
-#endif
-    mbedtls_memory_buffer_alloc_free();
-#endif  /* MBEDTLS_MEMORY_BUFFER_ALLOC_C */
-
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-    {
-        mbedtls_printf( " done.\n" );
-
-#if defined(_WIN32)
-        mbedtls_printf( "  + Press Enter to exit this program.\n" );
-        fflush( stdout ); getchar();
-#endif
-    }
-
-    // Shell can not handle large exit numbers -> 1 for errors
-    if( ret < 0 )
-        ret = 1;
-
-    if( opt.query_config_mode == DFL_QUERY_CONFIG_MODE )
-        mbedtls_exit( ret );
-    else
-        mbedtls_exit( query_config_ret );
-}
-#endif /* !MBEDTLS_SSL_TEST_IMPOSSIBLE && MBEDTLS_SSL_SRV_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_test_common_source.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_test_common_source.c
deleted file mode 100644
index d9e3607..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_test_common_source.c
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- *  Common source code for SSL test programs. This file is included by
- *  both ssl_client2.c and ssl_server2.c and is intended for source
- *  code that is textually identical in both programs, but that cannot be
- *  compiled separately because it refers to types or macros that are
- *  different in the two programs, or because it would have an incomplete
- *  type.
- *
- *  This file is meant to be #include'd and cannot be compiled separately.
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-int eap_tls_key_derivation( void *p_expkey,
-                            const unsigned char *ms,
-                            const unsigned char *kb,
-                            size_t maclen,
-                            size_t keylen,
-                            size_t ivlen,
-                            const unsigned char client_random[32],
-                            const unsigned char server_random[32],
-                            mbedtls_tls_prf_types tls_prf_type )
-{
-    eap_tls_keys *keys = (eap_tls_keys *)p_expkey;
-
-    ( ( void ) kb );
-    memcpy( keys->master_secret, ms, sizeof( keys->master_secret ) );
-    memcpy( keys->randbytes, client_random, 32 );
-    memcpy( keys->randbytes + 32, server_random, 32 );
-    keys->tls_prf_type = tls_prf_type;
-
-    if( opt.debug_level > 2 )
-    {
-        mbedtls_printf("exported maclen is %u\n", (unsigned)maclen);
-        mbedtls_printf("exported keylen is %u\n", (unsigned)keylen);
-        mbedtls_printf("exported ivlen is %u\n", (unsigned)ivlen);
-    }
-    return( 0 );
-}
-
-int nss_keylog_export( void *p_expkey,
-                       const unsigned char *ms,
-                       const unsigned char *kb,
-                       size_t maclen,
-                       size_t keylen,
-                       size_t ivlen,
-                       const unsigned char client_random[32],
-                       const unsigned char server_random[32],
-                       mbedtls_tls_prf_types tls_prf_type )
-{
-    char nss_keylog_line[ 200 ];
-    size_t const client_random_len = 32;
-    size_t const master_secret_len = 48;
-    size_t len = 0;
-    size_t j;
-    int ret = 0;
-
-    ((void) p_expkey);
-    ((void) kb);
-    ((void) maclen);
-    ((void) keylen);
-    ((void) ivlen);
-    ((void) server_random);
-    ((void) tls_prf_type);
-
-    len += sprintf( nss_keylog_line + len,
-                    "%s", "CLIENT_RANDOM " );
-
-    for( j = 0; j < client_random_len; j++ )
-    {
-        len += sprintf( nss_keylog_line + len,
-                        "%02x", client_random[j] );
-    }
-
-    len += sprintf( nss_keylog_line + len, " " );
-
-    for( j = 0; j < master_secret_len; j++ )
-    {
-        len += sprintf( nss_keylog_line + len,
-                        "%02x", ms[j] );
-    }
-
-    len += sprintf( nss_keylog_line + len, "\n" );
-    nss_keylog_line[ len ] = '\0';
-
-    mbedtls_printf( "\n" );
-    mbedtls_printf( "---------------- NSS KEYLOG -----------------\n" );
-    mbedtls_printf( "%s", nss_keylog_line );
-    mbedtls_printf( "---------------------------------------------\n" );
-
-    if( opt.nss_keylog_file != NULL )
-    {
-        FILE *f;
-
-        if( ( f = fopen( opt.nss_keylog_file, "a" ) ) == NULL )
-        {
-            ret = -1;
-            goto exit;
-        }
-
-        if( fwrite( nss_keylog_line, 1, len, f ) != len )
-        {
-            ret = -1;
-            fclose( f );
-            goto exit;
-        }
-
-        fclose( f );
-    }
-
-exit:
-    mbedtls_platform_zeroize( nss_keylog_line,
-                              sizeof( nss_keylog_line ) );
-    return( ret );
-}
-
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-int dtls_srtp_key_derivation( void *p_expkey,
-                              const unsigned char *ms,
-                              const unsigned char *kb,
-                              size_t maclen,
-                              size_t keylen,
-                              size_t ivlen,
-                              const unsigned char client_random[32],
-                              const unsigned char server_random[32],
-                              mbedtls_tls_prf_types tls_prf_type )
-{
-    dtls_srtp_keys *keys = (dtls_srtp_keys *)p_expkey;
-
-    ( ( void ) kb );
-    memcpy( keys->master_secret, ms, sizeof( keys->master_secret ) );
-    memcpy( keys->randbytes, client_random, 32 );
-    memcpy( keys->randbytes + 32, server_random, 32 );
-    keys->tls_prf_type = tls_prf_type;
-
-    if( opt.debug_level > 2 )
-    {
-        mbedtls_printf( "exported maclen is %u\n", (unsigned) maclen );
-        mbedtls_printf( "exported keylen is %u\n", (unsigned) keylen );
-        mbedtls_printf( "exported ivlen is %u\n", (unsigned) ivlen );
-    }
-    return( 0 );
-}
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-#if defined(MBEDTLS_SSL_RECORD_CHECKING)
-int ssl_check_record( mbedtls_ssl_context const *ssl,
-                      unsigned char const *buf, size_t len )
-{
-    int ret;
-    unsigned char *tmp_buf;
-
-    /* Record checking may modify the input buffer,
-     * so make a copy. */
-    tmp_buf = mbedtls_calloc( 1, len );
-    if( tmp_buf == NULL )
-        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
-    memcpy( tmp_buf, buf, len );
-
-    ret = mbedtls_ssl_check_record( ssl, tmp_buf, len );
-    if( ret != MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE )
-    {
-        int ret_repeated;
-
-        /* Test-only: Make sure that mbedtls_ssl_check_record()
-         *            doesn't alter state. */
-        memcpy( tmp_buf, buf, len ); /* Restore buffer */
-        ret_repeated = mbedtls_ssl_check_record( ssl, tmp_buf, len );
-        if( ret != ret_repeated )
-        {
-            mbedtls_printf( "mbedtls_ssl_check_record() returned inconsistent results.\n" );
-            return( -1 );
-        }
-
-        switch( ret )
-        {
-            case 0:
-                break;
-
-            case MBEDTLS_ERR_SSL_INVALID_RECORD:
-                if( opt.debug_level > 1 )
-                    mbedtls_printf( "mbedtls_ssl_check_record() detected invalid record.\n" );
-                break;
-
-            case MBEDTLS_ERR_SSL_INVALID_MAC:
-                if( opt.debug_level > 1 )
-                    mbedtls_printf( "mbedtls_ssl_check_record() detected unauthentic record.\n" );
-                break;
-
-            case MBEDTLS_ERR_SSL_UNEXPECTED_RECORD:
-                if( opt.debug_level > 1 )
-                    mbedtls_printf( "mbedtls_ssl_check_record() detected unexpected record.\n" );
-                break;
-
-            default:
-                mbedtls_printf( "mbedtls_ssl_check_record() failed fatally with -%#04x.\n", (unsigned int) -ret );
-                return( -1 );
-        }
-
-        /* Regardless of the outcome, forward the record to the stack. */
-    }
-
-    mbedtls_free( tmp_buf );
-
-    return( 0 );
-}
-#endif /* MBEDTLS_SSL_RECORD_CHECKING */
-
-int recv_cb( void *ctx, unsigned char *buf, size_t len )
-{
-    io_ctx_t *io_ctx = (io_ctx_t*) ctx;
-    size_t recv_len;
-    int ret;
-
-    if( opt.nbio == 2 )
-        ret = delayed_recv( io_ctx->net, buf, len );
-    else
-        ret = mbedtls_net_recv( io_ctx->net, buf, len );
-    if( ret < 0 )
-        return( ret );
-    recv_len = (size_t) ret;
-
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        /* Here's the place to do any datagram/record checking
-         * in between receiving the packet from the underlying
-         * transport and passing it on to the TLS stack. */
-#if defined(MBEDTLS_SSL_RECORD_CHECKING)
-        if( ssl_check_record( io_ctx->ssl, buf, recv_len ) != 0 )
-            return( -1 );
-#endif /* MBEDTLS_SSL_RECORD_CHECKING */
-    }
-
-    return( (int) recv_len );
-}
-
-int recv_timeout_cb( void *ctx, unsigned char *buf, size_t len,
-                     uint32_t timeout )
-{
-    io_ctx_t *io_ctx = (io_ctx_t*) ctx;
-    int ret;
-    size_t recv_len;
-
-    ret = mbedtls_net_recv_timeout( io_ctx->net, buf, len, timeout );
-    if( ret < 0 )
-        return( ret );
-    recv_len = (size_t) ret;
-
-    if( opt.transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        /* Here's the place to do any datagram/record checking
-         * in between receiving the packet from the underlying
-         * transport and passing it on to the TLS stack. */
-#if defined(MBEDTLS_SSL_RECORD_CHECKING)
-        if( ssl_check_record( io_ctx->ssl, buf, recv_len ) != 0 )
-            return( -1 );
-#endif /* MBEDTLS_SSL_RECORD_CHECKING */
-    }
-
-    return( (int) recv_len );
-}
-
-int send_cb( void *ctx, unsigned char const *buf, size_t len )
-{
-    io_ctx_t *io_ctx = (io_ctx_t*) ctx;
-
-    if( opt.nbio == 2 )
-        return( delayed_send( io_ctx->net, buf, len ) );
-
-    return( mbedtls_net_send( io_ctx->net, buf, len ) );
-}
-
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-int ssl_sig_hashes_for_test[] = {
-#if defined(MBEDTLS_SHA512_C)
-    MBEDTLS_MD_SHA512,
-    MBEDTLS_MD_SHA384,
-#endif
-#if defined(MBEDTLS_SHA256_C)
-    MBEDTLS_MD_SHA256,
-    MBEDTLS_MD_SHA224,
-#endif
-#if defined(MBEDTLS_SHA1_C)
-    /* Allow SHA-1 as we use it extensively in tests. */
-    MBEDTLS_MD_SHA1,
-#endif
-    MBEDTLS_MD_NONE
-};
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_test_lib.c b/lib/mbedtls-2.27.0/programs/ssl/ssl_test_lib.c
deleted file mode 100644
index 1bb9d61..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_test_lib.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- *  Common code library for SSL test programs.
- *
- *  In addition to the functions in this file, there is shared source code
- *  that cannot be compiled separately in "ssl_test_common_source.c".
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#include "ssl_test_lib.h"
-
-#if defined(MBEDTLS_TEST_HOOKS)
-#include "test/helpers.h"
-#endif
-
-#if !defined(MBEDTLS_SSL_TEST_IMPOSSIBLE)
-
-void my_debug( void *ctx, int level,
-               const char *file, int line,
-               const char *str )
-{
-    const char *p, *basename;
-
-    /* Extract basename from file */
-    for( p = basename = file; *p != '\0'; p++ )
-        if( *p == '/' || *p == '\\' )
-            basename = p + 1;
-
-    mbedtls_fprintf( (FILE *) ctx, "%s:%04d: |%d| %s",
-                     basename, line, level, str );
-    fflush( (FILE *) ctx  );
-}
-
-mbedtls_time_t dummy_constant_time( mbedtls_time_t* time )
-{
-    (void) time;
-    return 0x5af2a056;
-}
-
-#if !defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-static int dummy_entropy( void *data, unsigned char *output, size_t len )
-{
-    size_t i;
-    int ret;
-    (void) data;
-
-    ret = mbedtls_entropy_func( data, output, len );
-    for( i = 0; i < len; i++ )
-    {
-        //replace result with pseudo random
-        output[i] = (unsigned char) rand();
-    }
-    return( ret );
-}
-#endif
-
-void rng_init( rng_context_t *rng )
-{
-#if defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-    (void) rng;
-    psa_crypto_init( );
-#else /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-
-#if defined(MBEDTLS_CTR_DRBG_C)
-    mbedtls_ctr_drbg_init( &rng->drbg );
-#elif defined(MBEDTLS_HMAC_DRBG_C)
-    mbedtls_hmac_drbg_init( &rng->drbg );
-#else
-#error "No DRBG available"
-#endif
-
-    mbedtls_entropy_init( &rng->entropy );
-#endif /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-}
-
-int rng_seed( rng_context_t *rng, int reproducible, const char *pers )
-{
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( reproducible )
-    {
-        mbedtls_fprintf( stderr,
-                         "MBEDTLS_USE_PSA_CRYPTO does not support reproducible mode.\n" );
-        return( -1 );
-    }
-#endif
-#if defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-    /* The PSA crypto RNG does its own seeding. */
-    (void) rng;
-    (void) pers;
-    if( reproducible )
-    {
-        mbedtls_fprintf( stderr,
-                         "The PSA RNG does not support reproducible mode.\n" );
-        return( -1 );
-    }
-    return( 0 );
-#else /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-    int ( *f_entropy )( void *, unsigned char *, size_t ) =
-        ( reproducible ? dummy_entropy : mbedtls_entropy_func );
-
-    if ( reproducible )
-        srand( 1 );
-
-#if defined(MBEDTLS_CTR_DRBG_C)
-    int ret = mbedtls_ctr_drbg_seed( &rng->drbg,
-                                     f_entropy, &rng->entropy,
-                                     (const unsigned char *) pers,
-                                     strlen( pers ) );
-#elif defined(MBEDTLS_HMAC_DRBG_C)
-#if defined(MBEDTLS_SHA256_C)
-    const mbedtls_md_type_t md_type = MBEDTLS_MD_SHA256;
-#elif defined(MBEDTLS_SHA512_C)
-    const mbedtls_md_type_t md_type = MBEDTLS_MD_SHA512;
-#else
-#error "No message digest available for HMAC_DRBG"
-#endif
-    int ret = mbedtls_hmac_drbg_seed( &rng->drbg,
-                                      mbedtls_md_info_from_type( md_type ),
-                                      f_entropy, &rng->entropy,
-                                      (const unsigned char *) pers,
-                                      strlen( pers ) );
-#else /* !defined(MBEDTLS_CTR_DRBG_C) && !defined(MBEDTLS_HMAC_DRBG_C) */
-#error "No DRBG available"
-#endif /* !defined(MBEDTLS_CTR_DRBG_C) && !defined(MBEDTLS_HMAC_DRBG_C) */
-
-    if( ret != 0 )
-    {
-        mbedtls_printf( " failed\n  ! mbedtls_ctr_drbg_seed returned -0x%x\n",
-                        (unsigned int) -ret );
-        return( ret );
-    }
-#endif /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-
-    return( 0 );
-}
-
-void rng_free( rng_context_t *rng )
-{
-#if defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-    (void) rng;
-    /* Deinitialize the PSA crypto subsystem. This deactivates all PSA APIs.
-     * This is ok because none of our applications try to do any crypto after
-     * deinitializing the RNG. */
-    mbedtls_psa_crypto_free( );
-#else /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-
-#if defined(MBEDTLS_CTR_DRBG_C)
-    mbedtls_ctr_drbg_free( &rng->drbg );
-#elif defined(MBEDTLS_HMAC_DRBG_C)
-    mbedtls_hmac_drbg_free( &rng->drbg );
-#else
-#error "No DRBG available"
-#endif
-
-    mbedtls_entropy_free( &rng->entropy );
-#endif /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-}
-
-int rng_get( void *p_rng, unsigned char *output, size_t output_len )
-{
-#if defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-    (void) p_rng;
-    return( mbedtls_psa_get_random( MBEDTLS_PSA_RANDOM_STATE,
-                                    output, output_len ) );
-#else /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-    rng_context_t *rng = p_rng;
-
-#if defined(MBEDTLS_CTR_DRBG_C)
-    return( mbedtls_ctr_drbg_random( &rng->drbg, output, output_len ) );
-#elif defined(MBEDTLS_HMAC_DRBG_C)
-    return( mbedtls_hmac_drbg_random( &rng->drbg, output, output_len ) );
-#else
-#error "No DRBG available"
-#endif
-
-#endif /* !MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-}
-
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-int ca_callback( void *data, mbedtls_x509_crt const *child,
-                 mbedtls_x509_crt **candidates )
-{
-    int ret = 0;
-    mbedtls_x509_crt *ca = (mbedtls_x509_crt *) data;
-    mbedtls_x509_crt *first;
-
-    /* This is a test-only implementation of the CA callback
-     * which always returns the entire list of trusted certificates.
-     * Production implementations managing a large number of CAs
-     * should use an efficient presentation and lookup for the
-     * set of trusted certificates (such as a hashtable) and only
-     * return those trusted certificates which satisfy basic
-     * parental checks, such as the matching of child `Issuer`
-     * and parent `Subject` field or matching key identifiers. */
-    ((void) child);
-
-    first = mbedtls_calloc( 1, sizeof( mbedtls_x509_crt ) );
-    if( first == NULL )
-    {
-        ret = -1;
-        goto exit;
-    }
-    mbedtls_x509_crt_init( first );
-
-    if( mbedtls_x509_crt_parse_der( first, ca->raw.p, ca->raw.len ) != 0 )
-    {
-        ret = -1;
-        goto exit;
-    }
-
-    while( ca->next != NULL )
-    {
-        ca = ca->next;
-        if( mbedtls_x509_crt_parse_der( first, ca->raw.p, ca->raw.len ) != 0 )
-        {
-            ret = -1;
-            goto exit;
-        }
-    }
-
-exit:
-
-    if( ret != 0 )
-    {
-        mbedtls_x509_crt_free( first );
-        mbedtls_free( first );
-        first = NULL;
-    }
-
-    *candidates = first;
-    return( ret );
-}
-#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
-
-int delayed_recv( void *ctx, unsigned char *buf, size_t len )
-{
-    static int first_try = 1;
-    int ret;
-
-    if( first_try )
-    {
-        first_try = 0;
-        return( MBEDTLS_ERR_SSL_WANT_READ );
-    }
-
-    ret = mbedtls_net_recv( ctx, buf, len );
-    if( ret != MBEDTLS_ERR_SSL_WANT_READ )
-        first_try = 1; /* Next call will be a new operation */
-    return( ret );
-}
-
-int delayed_send( void *ctx, const unsigned char *buf, size_t len )
-{
-    static int first_try = 1;
-    int ret;
-
-    if( first_try )
-    {
-        first_try = 0;
-        return( MBEDTLS_ERR_SSL_WANT_WRITE );
-    }
-
-    ret = mbedtls_net_send( ctx, buf, len );
-    if( ret != MBEDTLS_ERR_SSL_WANT_WRITE )
-        first_try = 1; /* Next call will be a new operation */
-    return( ret );
-}
-
-#if !defined(MBEDTLS_TIMING_C)
-int idle( mbedtls_net_context *fd,
-          int idle_reason )
-#else
-int idle( mbedtls_net_context *fd,
-          mbedtls_timing_delay_context *timer,
-          int idle_reason )
-#endif
-{
-    int ret;
-    int poll_type = 0;
-
-    if( idle_reason == MBEDTLS_ERR_SSL_WANT_WRITE )
-        poll_type = MBEDTLS_NET_POLL_WRITE;
-    else if( idle_reason == MBEDTLS_ERR_SSL_WANT_READ )
-        poll_type = MBEDTLS_NET_POLL_READ;
-#if !defined(MBEDTLS_TIMING_C)
-    else
-        return( 0 );
-#endif
-
-    while( 1 )
-    {
-        /* Check if timer has expired */
-#if defined(MBEDTLS_TIMING_C)
-        if( timer != NULL &&
-            mbedtls_timing_get_delay( timer ) == 2 )
-        {
-            break;
-        }
-#endif /* MBEDTLS_TIMING_C */
-
-        /* Check if underlying transport became available */
-        if( poll_type != 0 )
-        {
-            ret = mbedtls_net_poll( fd, poll_type, 0 );
-            if( ret < 0 )
-                return( ret );
-            if( ret == poll_type )
-                break;
-        }
-    }
-
-    return( 0 );
-}
-
-#if defined(MBEDTLS_TEST_HOOKS)
-
-void test_hooks_init( void )
-{
-    mbedtls_test_info_reset( );
-
-#if defined(MBEDTLS_TEST_MUTEX_USAGE)
-    mbedtls_test_mutex_usage_init( );
-#endif
-}
-
-int test_hooks_failure_detected( void )
-{
-#if defined(MBEDTLS_TEST_MUTEX_USAGE)
-    /* Errors are reported via mbedtls_test_info. */
-    mbedtls_test_mutex_usage_check( );
-#endif
-
-    if( mbedtls_test_info.result != MBEDTLS_TEST_RESULT_SUCCESS )
-        return( 1 );
-    return( 0 );
-}
-
-void test_hooks_free( void )
-{
-}
-
-#endif /* MBEDTLS_TEST_HOOKS */
-
-#endif /* !defined(MBEDTLS_SSL_TEST_IMPOSSIBLE) */
diff --git a/lib/mbedtls-2.27.0/programs/ssl/ssl_test_lib.h b/lib/mbedtls-2.27.0/programs/ssl/ssl_test_lib.h
deleted file mode 100644
index 98751a0..0000000
--- a/lib/mbedtls-2.27.0/programs/ssl/ssl_test_lib.h
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- *  Common code for SSL test programs
- *
- *  Copyright The Mbed TLS Contributors
- *  SPDX-License-Identifier: Apache-2.0
- *
- *  Licensed under the Apache License, Version 2.0 (the "License"); you may
- *  not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-#ifndef MBEDTLS_PROGRAMS_SSL_SSL_TEST_LIB_H
-#define MBEDTLS_PROGRAMS_SSL_SSL_TEST_LIB_H
-
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
-
-#if defined(MBEDTLS_PLATFORM_C)
-#include "mbedtls/platform.h"
-#else
-#include <stdio.h>
-#include <stdlib.h>
-#define mbedtls_calloc     calloc
-#define mbedtls_free       free
-#define mbedtls_time       time
-#define mbedtls_time_t     time_t
-#define mbedtls_printf     printf
-#define mbedtls_fprintf    fprintf
-#define mbedtls_snprintf   snprintf
-#define mbedtls_exit            exit
-#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
-#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
-#endif
-
-#undef HAVE_RNG
-#if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) &&         \
-    ( defined(MBEDTLS_USE_PSA_CRYPTO) ||                \
-      defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG) )
-#define HAVE_RNG
-#elif defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_CTR_DRBG_C)
-#define HAVE_RNG
-#elif defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_HMAC_DRBG_C) &&     \
-    ( defined(MBEDTLS_SHA256_C) || defined(MBEDTLS_SHA512_C) )
-#define HAVE_RNG
-#endif
-
-#if !defined(MBEDTLS_NET_C) ||                              \
-    !defined(MBEDTLS_SSL_TLS_C) ||                          \
-    defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER)
-#define MBEDTLS_SSL_TEST_IMPOSSIBLE                             \
-    "MBEDTLS_NET_C and/or "                                     \
-    "MBEDTLS_SSL_TLS_C not defined, "                           \
-    "and/or MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER defined.\n"
-#elif !defined(HAVE_RNG)
-#define MBEDTLS_SSL_TEST_IMPOSSIBLE             \
-    "No random generator is available.\n"
-#else
-#undef MBEDTLS_SSL_TEST_IMPOSSIBLE
-
-#undef HAVE_RNG
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "mbedtls/net_sockets.h"
-#include "mbedtls/ssl.h"
-#include "mbedtls/entropy.h"
-#include "mbedtls/ctr_drbg.h"
-#include "mbedtls/hmac_drbg.h"
-#include "mbedtls/certs.h"
-#include "mbedtls/x509.h"
-#include "mbedtls/error.h"
-#include "mbedtls/debug.h"
-#include "mbedtls/timing.h"
-#include "mbedtls/base64.h"
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-#include "psa/crypto.h"
-#include "mbedtls/psa_util.h"
-#endif
-
-#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
-#include "mbedtls/memory_buffer_alloc.h"
-#endif
-
-#include <test/helpers.h>
-
-#include "../test/query_config.h"
-
-#if defined(MBEDTLS_SSL_EXPORT_KEYS)
-
-typedef struct eap_tls_keys
-{
-    unsigned char master_secret[48];
-    unsigned char randbytes[64];
-    mbedtls_tls_prf_types tls_prf_type;
-} eap_tls_keys;
-
-#if defined( MBEDTLS_SSL_DTLS_SRTP )
-
-/* Supported SRTP mode needs a maximum of :
- * - 16 bytes for key (AES-128)
- * - 14 bytes SALT
- * One for sender, one for receiver context
- */
-#define MBEDTLS_TLS_SRTP_MAX_KEY_MATERIAL_LENGTH    60
-
-typedef struct dtls_srtp_keys
-{
-    unsigned char master_secret[48];
-    unsigned char randbytes[64];
-    mbedtls_tls_prf_types tls_prf_type;
-} dtls_srtp_keys;
-
-#endif /* MBEDTLS_SSL_DTLS_SRTP */
-
-#endif /* MBEDTLS_SSL_EXPORT_KEYS */
-
-typedef struct
-{
-    mbedtls_ssl_context *ssl;
-    mbedtls_net_context *net;
-} io_ctx_t;
-
-void my_debug( void *ctx, int level,
-               const char *file, int line,
-               const char *str );
-
-mbedtls_time_t dummy_constant_time( mbedtls_time_t* time );
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO)
-/* If MBEDTLS_TEST_USE_PSA_CRYPTO_RNG is defined, the SSL test programs will use
- * mbedtls_psa_get_random() rather than entropy+DRBG as a random generator.
- *
- * The constraints are:
- * - Without the entropy module, the PSA RNG is the only option.
- * - Without at least one of the DRBG modules, the PSA RNG is the only option.
- * - The PSA RNG does not support explicit seeding, so it is incompatible with
- *   the reproducible mode used by test programs.
- * - For good overall test coverage, there should be at least one configuration
- *   where the test programs use the PSA RNG while the PSA RNG is itself based
- *   on entropy+DRBG, and at least one configuration where the test programs
- *   do not use the PSA RNG even though it's there.
- *
- * A simple choice that meets the constraints is to use the PSA RNG whenever
- * MBEDTLS_USE_PSA_CRYPTO is enabled. There's no real technical reason the
- * choice to use the PSA RNG in the test programs and the choice to use
- * PSA crypto when TLS code needs crypto have to be tied together, but it
- * happens to be a good match. It's also a good match from an application
- * perspective: either PSA is preferred for TLS (both for crypto and for
- * random generation) or it isn't.
- */
-#define MBEDTLS_TEST_USE_PSA_CRYPTO_RNG
-#endif
-
-/** A context for random number generation (RNG).
- */
-typedef struct
-{
-#if defined(MBEDTLS_TEST_USE_PSA_CRYPTO_RNG)
-    unsigned char dummy;
-#else /* MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-    mbedtls_entropy_context entropy;
-#if defined(MBEDTLS_CTR_DRBG_C)
-    mbedtls_ctr_drbg_context drbg;
-#elif defined(MBEDTLS_HMAC_DRBG_C)
-    mbedtls_hmac_drbg_context drbg;
-#else
-#error "No DRBG available"
-#endif
-#endif /* MBEDTLS_TEST_USE_PSA_CRYPTO_RNG */
-} rng_context_t;
-
-/** Initialize the RNG.
- *
- * This function only initializes the memory used by the RNG context.
- * Before using the RNG, it must be seeded with rng_seed().
- */
-void rng_init( rng_context_t *rng );
-
-/* Seed the random number generator.
- *
- * \param rng           The RNG context to use. It must have been initialized
- *                      with rng_init().
- * \param reproducible  If zero, seed the RNG from entropy.
- *                      If nonzero, use a fixed seed, so that the program
- *                      will produce the same sequence of random numbers
- *                      each time it is invoked.
- * \param pers          A null-terminated string. Different values for this
- *                      string cause the RNG to emit different output for
- *                      the same seed.
- *
- * return 0 on success, a negative value on error.
- */
-int rng_seed( rng_context_t *rng, int reproducible, const char *pers );
-
-/** Deinitialize the RNG. Free any embedded resource.
- *
- * \param rng           The RNG context to deinitialize. It must have been
- *                      initialized with rng_init().
- */
-void rng_free( rng_context_t *rng );
-
-/** Generate random data.
- *
- * This function is suitable for use as the \c f_rng argument to Mbed TLS
- * library functions.
- *
- * \param p_rng         The random generator context. This must be a pointer to
- *                      a #rng_context_t structure.
- * \param output        The buffer to fill.
- * \param output_len    The length of the buffer in bytes.
- *
- * \return              \c 0 on success.
- * \return              An Mbed TLS error code on error.
- */
-int rng_get( void *p_rng, unsigned char *output, size_t output_len );
-
-#if defined(MBEDTLS_USE_PSA_CRYPTO) && defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG)
-/* The test implementation of the PSA external RNG is insecure. When
- * MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG is enabled, before using any PSA crypto
- * function that makes use of an RNG, you must call
- * mbedtls_test_enable_insecure_external_rng(). */
-#include <test/fake_external_rng_for_test.h>
-#endif
-
-#if defined(MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK)
-int ca_callback( void *data, mbedtls_x509_crt const *child,
-                 mbedtls_x509_crt **candidates );
-#endif /* MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK */
-
-/*
- * Test recv/send functions that make sure each try returns
- * WANT_READ/WANT_WRITE at least once before sucesseding
- */
-int delayed_recv( void *ctx, unsigned char *buf, size_t len );
-int delayed_send( void *ctx, const unsigned char *buf, size_t len );
-
-/*
- * Wait for an event from the underlying transport or the timer
- * (Used in event-driven IO mode).
- */
-int idle( mbedtls_net_context *fd,
-#if defined(MBEDTLS_TIMING_C)
-          mbedtls_timing_delay_context *timer,
-#endif
-          int idle_reason );
-
-#if defined(MBEDTLS_TEST_HOOKS)
-/** Initialize whatever test hooks are enabled by the compile-time
- * configuration and make sense for the TLS test programs. */
-void test_hooks_init( void );
-
-/** Check if any test hooks detected a problem.
- *
- * If a problem was detected, it's ok for the calling program to keep going,
- * but it should ultimately exit with an error status.
- *
- * \note When implementing a test hook that detects errors on its own
- *       (as opposed to e.g. leaving the error for a memory sanitizer to
- *       report), make sure to print a message to standard error either at
- *       the time the problem is detected or during the execution of this
- *       function. This function does not indicate what problem was detected,
- *       so printing a message is the only way to provide feedback in the
- *       logs of the calling program.
- *
- * \return Nonzero if a problem was detected.
- *         \c 0 if no problem was detected.
- */
-int test_hooks_failure_detected( void );
-
-/** Free any resources allocated for the sake of test hooks.
- *
- * Call this at the end of the program so that resource leak analyzers
- * don't complain.
- */
-void test_hooks_free( void );
-
-#endif /* !MBEDTLS_TEST_HOOKS */
-
-#endif /* MBEDTLS_SSL_TEST_IMPOSSIBLE conditions: else */
-#endif /* MBEDTLS_PROGRAMS_SSL_SSL_TEST_LIB_H */