std.http: add simple standalone http tests, add state check for http server

2 files changed, 436 insertions, 0 deletions

diff --git a/test/standalone.zig b/test/standalone.zig
index 1f4d7cfded..a055da9761 100644
--- a/test/standalone.zig
+++ b/test/standalone.zig
@@ -55,6 +55,10 @@ pub const simple_cases = [_]SimpleCase{
         .os_filter = .windows,
         .link_libc = true,
     },
+    .{
+        .src_path = "test/standalone/http.zig",
+        .all_modes = true,
+    },
 
     // Ensure the development tools are buildable. Alphabetically sorted.
     // No need to build `tools/spirv/grammar.zig`.
diff --git a/test/standalone/http.zig b/test/standalone/http.zig
new file mode 100644
index 0000000000..1ed4b1b279
--- /dev/null
+++ b/test/standalone/http.zig
@@ -0,0 +1,432 @@
+const std = @import("std");
+
+const http = std.http;
+const Server = http.Server;
+const Client = http.Client;
+
+const mem = std.mem;
+const testing = std.testing;
+
+const max_header_size = 8192;
+
+var gpa_server = std.heap.GeneralPurposeAllocator(.{}){};
+var gpa_client = std.heap.GeneralPurposeAllocator(.{}){};
+
+const salloc = gpa_server.allocator();
+const calloc = gpa_client.allocator();
+
+fn handleRequest(res: *Server.Response) !void {
+    const log = std.log.scoped(.server);
+
+    log.info("{s} {s} {s}", .{ @tagName(res.request.method), @tagName(res.request.version), res.request.target });
+
+    const body = try res.reader().readAllAlloc(salloc, 8192);
+    defer salloc.free(body);
+
+    if (res.request.headers.contains("connection")) {
+        try res.headers.append("connection", "keep-alive");
+    }
+
+    if (mem.startsWith(u8, res.request.target, "/get")) {
+        if (std.mem.indexOf(u8, res.request.target, "?chunked") != null) {
+            res.transfer_encoding = .chunked;
+        } else {
+            res.transfer_encoding = .{ .content_length = 14 };
+        }
+
+        try res.headers.append("content-type", "text/plain");
+
+        try res.do();
+        if (res.request.method != .HEAD) {
+            try res.writeAll("Hello, ");
+            try res.writeAll("World!\n");
+            try res.finish();
+        }
+    } else if (mem.eql(u8, res.request.target, "/echo-content")) {
+        try testing.expectEqualStrings("Hello, World!\n", body);
+        try testing.expectEqualStrings("text/plain", res.request.headers.getFirstValue("content-type").?);
+
+        if (res.request.headers.contains("transfer-encoding")) {
+            try testing.expectEqualStrings("chunked", res.request.headers.getFirstValue("transfer-encoding").?);
+            res.transfer_encoding = .chunked;
+        } else {
+            res.transfer_encoding = .{ .content_length = 14 };
+            try testing.expectEqualStrings("14", res.request.headers.getFirstValue("content-length").?);
+        }
+
+        try res.do();
+        try res.writeAll("Hello, ");
+        try res.writeAll("World!\n");
+        try res.finish();
+    } else if (mem.eql(u8, res.request.target, "/trailer")) {
+        res.transfer_encoding = .chunked;
+
+        try res.do();
+        try res.writeAll("Hello, ");
+        try res.writeAll("World!\n");
+        // try res.finish();
+        try res.connection.writeAll("0\r\nX-Checksum: aaaa\r\n\r\n");
+    } else if (mem.eql(u8, res.request.target, "/redirect/1")) {
+        res.transfer_encoding = .chunked;
+
+        res.status = .found;
+        try res.headers.append("location", "../../get");
+
+        try res.do();
+        try res.writeAll("Hello, ");
+        try res.writeAll("Redirected!\n");
+        try res.finish();
+    } else if (mem.eql(u8, res.request.target, "/redirect/2")) {
+        res.transfer_encoding = .chunked;
+
+        res.status = .found;
+        try res.headers.append("location", "/redirect/1");
+
+        try res.do();
+        try res.writeAll("Hello, ");
+        try res.writeAll("Redirected!\n");
+        try res.finish();
+    } else if (mem.eql(u8, res.request.target, "/redirect/3")) {
+        res.transfer_encoding = .chunked;
+
+        const location = try std.fmt.allocPrint(salloc, "http://127.0.0.1:{d}/redirect/2", .{res.server.socket.listen_address.getPort()});
+        defer salloc.free(location);
+
+        res.status = .found;
+        try res.headers.append("location", location);
+
+        try res.do();
+        try res.writeAll("Hello, ");
+        try res.writeAll("Redirected!\n");
+        try res.finish();
+    } else if (mem.eql(u8, res.request.target, "/redirect/4")) {
+        res.transfer_encoding = .chunked;
+
+        res.status = .found;
+        try res.headers.append("location", "/redirect/3");
+
+        try res.do();
+        try res.writeAll("Hello, ");
+        try res.writeAll("Redirected!\n");
+        try res.finish();
+    } else {
+        res.status = .not_found;
+        try res.do();
+    }
+}
+
+var handle_new_requests = true;
+
+fn runServer(srv: *Server) !void {
+    outer: while (handle_new_requests) {
+        var res = try srv.accept(.{ .dynamic = max_header_size });
+        defer res.deinit();
+
+        while (res.reset()) {
+            res.wait() catch |err| switch (err) {
+                error.HttpHeadersInvalid => continue :outer,
+                error.EndOfStream => continue,
+                else => return err,
+            };
+
+            try handleRequest(&res);
+        }
+    }
+}
+
+fn serverThread(srv: *Server) void {
+    defer srv.deinit();
+    defer _ = gpa_server.deinit();
+
+    runServer(srv) catch |err| {
+        std.debug.print("server error: {}\n", .{err});
+
+        if (@errorReturnTrace()) |trace| {
+            std.debug.dumpStackTrace(trace.*);
+        }
+
+        _ = gpa_server.deinit();
+        std.os.exit(1);
+    };
+}
+
+fn killServer(addr: std.net.Address) void {
+    handle_new_requests = false;
+
+    const conn = std.net.tcpConnectToAddress(addr) catch return;
+    conn.close();
+}
+
+pub fn main() !void {
+    const log = std.log.scoped(.client);
+
+    defer _ = gpa_client.deinit();
+
+    var server = Server.init(salloc, .{ .reuse_address = true });
+
+    const addr = std.net.Address.parseIp("127.0.0.1", 0) catch unreachable;
+    try server.listen(addr);
+
+    const port = server.socket.listen_address.getPort();
+
+    const server_thread = try std.Thread.spawn(.{}, serverThread, .{&server});
+
+    var client = Client{ .allocator = calloc };
+
+    defer client.deinit();
+
+    { // read content-length response
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/get", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+        try testing.expectEqualStrings("text/plain", req.response.headers.getFirstValue("content-type").?);
+    }
+
+    { // send head request and not read chunked
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/get", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.HEAD, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("", body);
+        try testing.expectEqualStrings("text/plain", req.response.headers.getFirstValue("content-type").?);
+        try testing.expectEqualStrings("14", req.response.headers.getFirstValue("content-length").?);
+    }
+
+    { // read chunked response
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/get?chunked", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+        try testing.expectEqualStrings("text/plain", req.response.headers.getFirstValue("content-type").?);
+    }
+
+    { // send head request and not read chunked
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/get?chunked", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.HEAD, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("", body);
+        try testing.expectEqualStrings("text/plain", req.response.headers.getFirstValue("content-type").?);
+        try testing.expectEqualStrings("chunked", req.response.headers.getFirstValue("transfer-encoding").?);
+    }
+
+    { // check trailing headers
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/trailer", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+        try testing.expectEqualStrings("aaaa", req.response.headers.getFirstValue("x-checksum").?);
+    }
+
+    { // send content-length request
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        try h.append("content-type", "text/plain");
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/echo-content", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.POST, uri, h, .{});
+        defer req.deinit();
+
+        req.transfer_encoding = .{ .content_length = 14 };
+
+        try req.start();
+        try req.writeAll("Hello, ");
+        try req.writeAll("World!\n");
+        try req.finish();
+
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+    }
+
+    { // send chunked request
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        try h.append("content-type", "text/plain");
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/echo-content", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.POST, uri, h, .{});
+        defer req.deinit();
+
+        req.transfer_encoding = .chunked;
+
+        try req.start();
+        try req.writeAll("Hello, ");
+        try req.writeAll("World!\n");
+        try req.finish();
+
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+    }
+
+    { // relative redirect
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/redirect/1", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+    }
+
+    { // redirect from root
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/redirect/2", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+    }
+
+    { // absolute redirect
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/redirect/3", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        try req.wait();
+
+        const body = try req.reader().readAllAlloc(calloc, 8192);
+        defer calloc.free(body);
+
+        try testing.expectEqualStrings("Hello, World!\n", body);
+    }
+
+    { // too many redirects
+        var h = http.Headers{ .allocator = calloc };
+        defer h.deinit();
+
+        const location = try std.fmt.allocPrint(calloc, "http://127.0.0.1:{d}/redirect/4", .{port});
+        defer calloc.free(location);
+        const uri = try std.Uri.parse(location);
+
+        log.info("{s}", .{location});
+        var req = try client.request(.GET, uri, h, .{});
+        defer req.deinit();
+
+        try req.start();
+        req.wait() catch |err| switch (err) {
+            error.TooManyHttpRedirects => {},
+            else => return err,
+        };
+    }
+
+    killServer(server.socket.listen_address);
+    server_thread.join();
+}