fix: Rate limit (#27)

* [chore] adding electron-fetch dependency

* [feat] adding requests module skeleton

* [feat] not doing any http request to get latest ns version if data is fresh

* [fix] data is considered fresh if less than 5 minutes old

* [feat] adding requests.getLatestNsVersionLink implementation

* [refactor] fully using requests module (with associated cache)

* [docs] adding documentation to requests module

* [refactor] adding a key to get nsLatestRelease cache results

* [chore] removing request deprecated dependency

* [feat] using follow-redirects instead of electron-fetch

* [chore] removing electron-fetch dependency

* fixed formatting

Single quotes to double, proper textwidth for comments, and proper
comment style, the usual... Nothing special here...

* fixed wrong location for requests.json

We don't want to clutter people's config folder, hence we should use the
cache folder instead...

Co-authored-by: 0neGal <mail@0negal.com>

4 files changed, 193 insertions, 564 deletions

diff --git a/package-lock.json b/package-lock.json
index 96d23eb..f337f3a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,18 +1,17 @@
 {
 	"name": "viper",
-	"version": "0.9.0",
+	"version": "0.9.1",
 	"lockfileVersion": 2,
 	"requires": true,
 	"packages": {
 		"": {
 			"name": "viper",
-			"version": "0.9.0",
+			"version": "0.9.1",
 			"license": "GPL-3.0-or-later",
 			"dependencies": {
 				"electron-updater": "^4.6.1",
 				"follow-redirects": "^1.14.6",
 				"marked-man": "^0.7.0",
-				"request": "^2.88.2",
 				"unzipper": "^0.10.11"
 			},
 			"devDependencies": {
@@ -301,6 +300,7 @@
 			"version": "6.12.6",
 			"resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
 			"integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
+			"dev": true,
 			"dependencies": {
 				"fast-deep-equal": "^3.1.1",
 				"fast-json-stable-stringify": "^2.0.0",
@@ -486,18 +486,12 @@
 				"@types/glob": "^7.1.1"
 			}
 		},
-		"node_modules/asn1": {
-			"version": "0.2.6",
-			"resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.6.tgz",
-			"integrity": "sha512-ix/FxPn0MDjeyJ7i/yoHGFt/EX6LyNbxSEhPPXODPL+KB0VPk86UYfL0lMdy+KCnv+fmvIzySwaK5COwqVbWTQ==",
-			"dependencies": {
-				"safer-buffer": "~2.1.0"
-			}
-		},
 		"node_modules/assert-plus": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
 			"integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+			"dev": true,
+			"optional": true,
 			"engines": {
 				"node": ">=0.8"
 			}
@@ -530,7 +524,8 @@
 		"node_modules/asynckit": {
 			"version": "0.4.0",
 			"resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
-			"integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
+			"integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k=",
+			"dev": true
 		},
 		"node_modules/at-least-node": {
 			"version": "1.0.0",
@@ -541,19 +536,6 @@
 				"node": ">= 4.0.0"
 			}
 		},
-		"node_modules/aws-sign2": {
-			"version": "0.7.0",
-			"resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
-			"integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=",
-			"engines": {
-				"node": "*"
-			}
-		},
-		"node_modules/aws4": {
-			"version": "1.11.0",
-			"resolved": "https://registry.npmjs.org/aws4/-/aws4-1.11.0.tgz",
-			"integrity": "sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA=="
-		},
 		"node_modules/balanced-match": {
 			"version": "1.0.2",
 			"resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
@@ -579,14 +561,6 @@
 				}
 			]
 		},
-		"node_modules/bcrypt-pbkdf": {
-			"version": "1.0.2",
-			"resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
-			"integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
-			"dependencies": {
-				"tweetnacl": "^0.14.3"
-			}
-		},
 		"node_modules/big-integer": {
 			"version": "1.6.51",
 			"resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.51.tgz",
@@ -888,11 +862,6 @@
 				"url": "https://github.com/sponsors/sindresorhus"
 			}
 		},
-		"node_modules/caseless": {
-			"version": "0.12.0",
-			"resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
-			"integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
-		},
 		"node_modules/chainsaw": {
 			"version": "0.1.0",
 			"resolved": "https://registry.npmjs.org/chainsaw/-/chainsaw-0.1.0.tgz",
@@ -1012,6 +981,7 @@
 			"version": "1.0.8",
 			"resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
 			"integrity": "sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==",
+			"dev": true,
 			"dependencies": {
 				"delayed-stream": "~1.0.0"
 			},
@@ -1123,17 +1093,6 @@
 				"node": ">=8"
 			}
 		},
-		"node_modules/dashdash": {
-			"version": "1.14.1",
-			"resolved": "https://registry.npmjs.org/dashdash/-/dashdash-1.14.1.tgz",
-			"integrity": "sha1-hTz6D3y+L+1d4gMmuN1YEDX24vA=",
-			"dependencies": {
-				"assert-plus": "^1.0.0"
-			},
-			"engines": {
-				"node": ">=0.10"
-			}
-		},
 		"node_modules/debug": {
 			"version": "4.3.3",
 			"resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
@@ -1194,6 +1153,7 @@
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
 			"integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
+			"dev": true,
 			"engines": {
 				"node": ">=0.4.0"
 			}
@@ -1351,15 +1311,6 @@
 			"integrity": "sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI=",
 			"dev": true
 		},
-		"node_modules/ecc-jsbn": {
-			"version": "0.1.2",
-			"resolved": "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz",
-			"integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
-			"dependencies": {
-				"jsbn": "~0.1.0",
-				"safer-buffer": "^2.1.0"
-			}
-		},
 		"node_modules/ejs": {
 			"version": "3.1.6",
 			"resolved": "https://registry.npmjs.org/ejs/-/ejs-3.1.6.tgz",
@@ -1692,11 +1643,6 @@
 				"url": "https://github.com/sponsors/sindresorhus"
 			}
 		},
-		"node_modules/extend": {
-			"version": "3.0.2",
-			"resolved": "https://registry.npmjs.org/extend/-/extend-3.0.2.tgz",
-			"integrity": "sha512-fjquC59cD7CyW6urNXK0FBufkZcoiGG80wTuPujX590cB5Ttln20E2UB4S/WARVqhXffZl2LNgS+gQdPIIim/g=="
-		},
 		"node_modules/extract-zip": {
 			"version": "1.7.0",
 			"resolved": "https://registry.npmjs.org/extract-zip/-/extract-zip-1.7.0.tgz",
@@ -1731,19 +1677,23 @@
 			"version": "1.3.0",
 			"resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
 			"integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
+			"dev": true,
 			"engines": [
 				"node >=0.6.0"
-			]
+			],
+			"optional": true
 		},
 		"node_modules/fast-deep-equal": {
 			"version": "3.1.3",
 			"resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
-			"integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
+			"integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==",
+			"dev": true
 		},
 		"node_modules/fast-json-stable-stringify": {
 			"version": "2.1.0",
 			"resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
-			"integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw=="
+			"integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==",
+			"dev": true
 		},
 		"node_modules/fd-slicer": {
 			"version": "1.1.0",
@@ -1782,27 +1732,6 @@
 				}
 			}
 		},
-		"node_modules/forever-agent": {
-			"version": "0.6.1",
-			"resolved": "https://registry.npmjs.org/forever-agent/-/forever-agent-0.6.1.tgz",
-			"integrity": "sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=",
-			"engines": {
-				"node": "*"
-			}
-		},
-		"node_modules/form-data": {
-			"version": "2.3.3",
-			"resolved": "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz",
-			"integrity": "sha512-1lLKB2Mu3aGP1Q/2eCOx0fNbRMe7XdwktwOruhfqqd0rIJWwN4Dh+E3hrPSlDCXnSR7UtZ1N38rVXm+6+MEhJQ==",
-			"dependencies": {
-				"asynckit": "^0.4.0",
-				"combined-stream": "^1.0.6",
-				"mime-types": "^2.1.12"
-			},
-			"engines": {
-				"node": ">= 0.12"
-			}
-		},
 		"node_modules/fs-extra": {
 			"version": "8.1.0",
 			"resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
@@ -1843,14 +1772,6 @@
 				"node": ">=6"
 			}
 		},
-		"node_modules/getpass": {
-			"version": "0.1.7",
-			"resolved": "https://registry.npmjs.org/getpass/-/getpass-0.1.7.tgz",
-			"integrity": "sha1-Xv+OPmhNVprkyysSgmBOi6YhSfo=",
-			"dependencies": {
-				"assert-plus": "^1.0.0"
-			}
-		},
 		"node_modules/glob": {
 			"version": "7.2.0",
 			"resolved": "https://registry.npmjs.org/glob/-/glob-7.2.0.tgz",
@@ -1993,27 +1914,6 @@
 			"integrity": "sha1-TK+tdrxi8C+gObL5Tpo906ORpyU=",
 			"dev": true
 		},
-		"node_modules/har-schema": {
-			"version": "2.0.0",
-			"resolved": "https://registry.npmjs.org/har-schema/-/har-schema-2.0.0.tgz",
-			"integrity": "sha1-qUwiJOvKwEeCoNkDVSHyRzW37JI=",
-			"engines": {
-				"node": ">=4"
-			}
-		},
-		"node_modules/har-validator": {
-			"version": "5.1.5",
-			"resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.1.5.tgz",
-			"integrity": "sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==",
-			"deprecated": "this library is no longer supported",
-			"dependencies": {
-				"ajv": "^6.12.3",
-				"har-schema": "^2.0.0"
-			},
-			"engines": {
-				"node": ">=6"
-			}
-		},
 		"node_modules/has-flag": {
 			"version": "4.0.0",
 			"resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
@@ -2050,20 +1950,6 @@
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 			"dev": true
 		},
-		"node_modules/http-signature": {
-			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
-			"integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
-			"dependencies": {
-				"assert-plus": "^1.0.0",
-				"jsprim": "^1.2.2",
-				"sshpk": "^1.7.0"
-			},
-			"engines": {
-				"node": ">=0.8",
-				"npm": ">=1.3.7"
-			}
-		},
 		"node_modules/iconv-corefoundation": {
 			"version": "1.1.7",
 			"resolved": "https://registry.npmjs.org/iconv-corefoundation/-/iconv-corefoundation-1.1.7.tgz",
@@ -2222,7 +2108,8 @@
 		"node_modules/is-typedarray": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
-			"integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
+			"integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=",
+			"dev": true
 		},
 		"node_modules/is-yarn-global": {
 			"version": "0.3.0",
@@ -2253,11 +2140,6 @@
 			"integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=",
 			"dev": true
 		},
-		"node_modules/isstream": {
-			"version": "0.1.2",
-			"resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
-			"integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo="
-		},
 		"node_modules/jake": {
 			"version": "10.8.2",
 			"resolved": "https://registry.npmjs.org/jake/-/jake-10.8.2.tgz",
@@ -2358,31 +2240,24 @@
 				"js-yaml": "bin/js-yaml.js"
 			}
 		},
-		"node_modules/jsbn": {
-			"version": "0.1.1",
-			"resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
-			"integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM="
-		},
 		"node_modules/json-buffer": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.0.tgz",
 			"integrity": "sha1-Wx85evx11ne96Lz8Dkfh+aPZqJg=",
 			"dev": true
 		},
-		"node_modules/json-schema": {
-			"version": "0.4.0",
-			"resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.4.0.tgz",
-			"integrity": "sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA=="
-		},
 		"node_modules/json-schema-traverse": {
 			"version": "0.4.1",
 			"resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
-			"integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="
+			"integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
+			"dev": true
 		},
 		"node_modules/json-stringify-safe": {
 			"version": "5.0.1",
 			"resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
-			"integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
+			"integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
+			"dev": true,
+			"optional": true
 		},
 		"node_modules/json5": {
 			"version": "2.2.0",
@@ -2408,20 +2283,6 @@
 				"graceful-fs": "^4.1.6"
 			}
 		},
-		"node_modules/jsprim": {
-			"version": "1.4.2",
-			"resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.2.tgz",
-			"integrity": "sha512-P2bSOMAc/ciLz6DzgjVlGJP9+BrJWu5UDGK70C2iweC5QBIeFf0ZXRvGjEj2uYgrY2MkAAhsSWHDWlFtEroZWw==",
-			"dependencies": {
-				"assert-plus": "1.0.0",
-				"extsprintf": "1.3.0",
-				"json-schema": "0.4.0",
-				"verror": "1.10.0"
-			},
-			"engines": {
-				"node": ">=0.6.0"
-			}
-		},
 		"node_modules/keyv": {
 			"version": "3.1.0",
 			"resolved": "https://registry.npmjs.org/keyv/-/keyv-3.1.0.tgz",
@@ -2556,6 +2417,7 @@
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 			"resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.51.0.tgz",
 			"integrity": "sha512-5y8A56jg7XVQx2mbv1lu49NR4dokRnhZYTtL+KGfaa27uq4pSTXkwQkFJl4pkRMyNFz/EtYDSkiiEHx3F7UN6g==",
+			"dev": true,
 			"engines": {
 				"node": ">= 0.6"
 			}
@@ -2564,6 +2426,7 @@
 			"version": "2.1.34",
 			"resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.34.tgz",
 			"integrity": "sha512-6cP692WwGIs9XXdOO4++N+7qjqv0rqxxVvJ3VHPh/Sc9mVZcQP+ZGhkKiTvWMQRr2tbHkJP/Yn7Y0npb3ZBs4A==",
+			"dev": true,
 			"dependencies": {
 				"mime-db": "1.51.0"
 			},
@@ -2642,14 +2505,6 @@
 				"node": ">=4"
 			}
 		},
-		"node_modules/oauth-sign": {
-			"version": "0.9.0",
-			"resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.9.0.tgz",
-			"integrity": "sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==",
-			"engines": {
-				"node": "*"
-			}
-		},
 		"node_modules/object-keys": {
 			"version": "1.1.1",
 			"resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
@@ -2715,11 +2570,6 @@
 			"integrity": "sha1-elfrVQpng/kRUzH89GY9XI4AelA=",
 			"dev": true
 		},
-		"node_modules/performance-now": {
-			"version": "2.1.0",
-			"resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
-			"integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
-		},
 		"node_modules/pify": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
@@ -2782,11 +2632,6 @@
 			"dev": true,
 			"optional": true
 		},
-		"node_modules/psl": {
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-		},
-		"har-validator": {
-			"version": "5.1.5",
-			"resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.1.5.tgz",
-			"integrity": "sha512-nmT2T0lljbxdQZfspsno9hgrG3Uir6Ks5afism62poxqBM6sDnMEuPmzTq8XN0OEwqKLLdh1jQI3qyE66Nzb3w==",
-			"requires": {
-				"ajv": "^6.12.3",
-				"har-schema": "^2.0.0"
-			}
-		},
 		"has-flag": {
 			"version": "4.0.0",
 			"resolved": "https://registry.npmjs.org/has-flag/-/has-flag-4.0.0.tgz",
@@ -5298,16 +4970,6 @@
 			"integrity": "sha512-carPklcUh7ROWRK7Cv27RPtdhYhUsela/ue5/jKzjegVvXDqM2ILE9Q2BGn9JZJh1g87cp56su/FgQSzcWS8cQ==",
 			"dev": true
 		},
-		"http-signature": {
-			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/http-signature/-/http-signature-1.2.0.tgz",
-			"integrity": "sha1-muzZJRFHcvPZW2WmCruPfBj7rOE=",
-			"requires": {
-				"assert-plus": "^1.0.0",
-				"jsprim": "^1.2.2",
-				"sshpk": "^1.7.0"
-			}
-		},
 		"iconv-corefoundation": {
 			"version": "1.1.7",
 			"resolved": "https://registry.npmjs.org/iconv-corefoundation/-/iconv-corefoundation-1.1.7.tgz",
@@ -5413,7 +5075,8 @@
 		"is-typedarray": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
-			"integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
+			"integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo=",
+			"dev": true
 		},
 		"is-yarn-global": {
 			"version": "0.3.0",
@@ -5438,11 +5101,6 @@
 			"integrity": "sha1-6PvzdNxVb/iUehDcsFctYz8s+hA=",
 			"dev": true
 		},
-		"isstream": {
-			"version": "0.1.2",
-			"resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
-			"integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo="
-		},
 		"jake": {
 			"version": "10.8.2",
 			"resolved": "https://registry.npmjs.org/jake/-/jake-10.8.2.tgz",
@@ -5521,31 +5179,24 @@
 				"argparse": "^2.0.1"
 			}
 		},
-		"jsbn": {
-			"version": "0.1.1",
-			"resolved": "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz",
-			"integrity": "sha1-peZUwuWi3rXyAdls77yoDA7y9RM="
-		},
 		"json-buffer": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/json-buffer/-/json-buffer-3.0.0.tgz",
 			"integrity": "sha1-Wx85evx11ne96Lz8Dkfh+aPZqJg=",
 			"dev": true
 		},
-		"json-schema": {
-			"version": "0.4.0",
-			"resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.4.0.tgz",
-			"integrity": "sha512-es94M3nTIfsEPisRafak+HDLfHXnKBhV3vU5eqPcS3flIWqcxJWgXHXiey3YrpaNsanY5ei1VoYEbOzijuq9BA=="
-		},
 		"json-schema-traverse": {
 			"version": "0.4.1",
 			"resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
-			"integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="
+			"integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==",
+			"dev": true
 		},
 		"json-stringify-safe": {
 			"version": "5.0.1",
 			"resolved": "https://registry.npmjs.org/json-stringify-safe/-/json-stringify-safe-5.0.1.tgz",
-			"integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
+			"integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus=",
+			"dev": true,
+			"optional": true
 		},
 		"json5": {
 			"version": "2.2.0",
@@ -5565,17 +5216,6 @@
 				"graceful-fs": "^4.1.6"
 			}
 		},
-		"jsprim": {
-			"version": "1.4.2",
-			"resolved": "https://registry.npmjs.org/jsprim/-/jsprim-1.4.2.tgz",
-			"integrity": "sha512-P2bSOMAc/ciLz6DzgjVlGJP9+BrJWu5UDGK70C2iweC5QBIeFf0ZXRvGjEj2uYgrY2MkAAhsSWHDWlFtEroZWw==",
-			"requires": {
-				"assert-plus": "1.0.0",
-				"extsprintf": "1.3.0",
-				"json-schema": "0.4.0",
-				"verror": "1.10.0"
-			}
-		},
 		"keyv": {
 			"version": "3.1.0",
 			"resolved": "https://registry.npmjs.org/keyv/-/keyv-3.1.0.tgz",
@@ -5674,12 +5314,14 @@
 		"mime-db": {
 			"version": "1.51.0",
 			"resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.51.0.tgz",
-			"integrity": "sha512-5y8A56jg7XVQx2mbv1lu49NR4dokRnhZYTtL+KGfaa27uq4pSTXkwQkFJl4pkRMyNFz/EtYDSkiiEHx3F7UN6g=="
+			"integrity": "sha512-5y8A56jg7XVQx2mbv1lu49NR4dokRnhZYTtL+KGfaa27uq4pSTXkwQkFJl4pkRMyNFz/EtYDSkiiEHx3F7UN6g==",
+			"dev": true
 		},
 		"mime-types": {
 			"version": "2.1.34",
 			"resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.34.tgz",
 			"integrity": "sha512-6cP692WwGIs9XXdOO4++N+7qjqv0rqxxVvJ3VHPh/Sc9mVZcQP+ZGhkKiTvWMQRr2tbHkJP/Yn7Y0npb3ZBs4A==",
+			"dev": true,
 			"requires": {
 				"mime-db": "1.51.0"
 			}
@@ -5740,11 +5382,6 @@
 				"pify": "^3.0.0"
 			}
 		},
-		"oauth-sign": {
-			"version": "0.9.0",
-			"resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.9.0.tgz",
-			"integrity": "sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ=="
-		},
 		"object-keys": {
 			"version": "1.1.1",
 			"resolved": "https://registry.npmjs.org/object-keys/-/object-keys-1.1.1.tgz",
@@ -5795,11 +5432,6 @@
 			"integrity": "sha1-elfrVQpng/kRUzH89GY9XI4AelA=",
 			"dev": true
 		},
-		"performance-now": {
-			"version": "2.1.0",
-			"resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
-			"integrity": "sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns="
-		},
 		"pify": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
@@ -5849,11 +5481,6 @@
 			"dev": true,
 			"optional": true
 		},
-		"psl": {
-			"version": "1.8.0",
-			"resolved": "https://registry.npmjs.org/psl/-/psl-1.8.0.tgz",
-			"integrity": "sha512-RIdOzyoavK+hA18OGGWDqUTsCLhtA7IcZ/6NCs4fFJaHBDab+pDDmDIByWFRQJq2Cd7r1OoQxBGKOaztq+hjIQ=="
-		},
 		"pump": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
@@ -5867,7 +5494,8 @@
 		"punycode": {
 			"version": "2.1.1",
 			"resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-			"integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
+			"integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
+			"dev": true
 		},
 		"pupa": {
 			"version": "2.1.1",
@@ -5878,11 +5506,6 @@
 				"escape-goat": "^2.0.0"
 			}
 		},
-		"qs": {
-			"version": "6.5.2",
-			"resolved": "https://registry.npmjs.org/qs/-/qs-6.5.2.tgz",
-			"integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA=="
-		},
 		"rc": {
 			"version": "1.2.8",
 			"resolved": "https://registry.npmjs.org/rc/-/rc-1.2.8.tgz",
@@ -5940,33 +5563,6 @@
 				"rc": "^1.2.8"
 			}
 		},
-		"request": {
-			"version": "2.88.2",
-			"resolved": "https://registry.npmjs.org/request/-/request-2.88.2.tgz",
-			"integrity": "sha512-MsvtOrfG9ZcrOwAW+Qi+F6HbD0CWXEh9ou77uOb7FM2WPhwT7smM833PzanhJLsgXjN89Ir6V2PczXNnMpwKhw==",
-			"requires": {
-				"aws-sign2": "~0.7.0",
-				"aws4": "^1.8.0",
-				"caseless": "~0.12.0",
-				"combined-stream": "~1.0.6",
-				"extend": "~3.0.2",
-				"forever-agent": "~0.6.1",
-				"form-data": "~2.3.2",
-				"har-validator": "~5.1.3",
-				"http-signature": "~1.2.0",
-				"is-typedarray": "~1.0.0",
-				"isstream": "~0.1.2",
-				"json-stringify-safe": "~5.0.1",
-				"mime-types": "~2.1.19",
-				"oauth-sign": "~0.9.0",
-				"performance-now": "^2.1.0",
-				"qs": "~6.5.2",
-				"safe-buffer": "^5.1.2",
-				"tough-cookie": "~2.5.0",
-				"tunnel-agent": "^0.6.0",
-				"uuid": "^3.3.2"
-			}
-		},
 		"require-directory": {
 			"version": "2.1.1",
 			"resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -6013,7 +5609,8 @@
 		"safer-buffer": {
 			"version": "2.1.2",
 			"resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
-			"integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+			"integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+			"dev": true
 		},
 		"sanitize-filename": {
 			"version": "1.6.3",
@@ -6129,22 +5726,6 @@
 			"dev": true,
 			"optional": true
 		},
-		"sshpk": {
-			"version": "1.16.1",
-			"resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.1.tgz",
-			"integrity": "sha512-HXXqVUq7+pcKeLqqZj6mHFUMvXtOJt1uoUx09pFW6011inTMxqI8BA8PM95myrIyyKwdnzjdFjLiE6KBPVtJIg==",
-			"requires": {
-				"asn1": "~0.2.3",
-				"assert-plus": "^1.0.0",
-				"bcrypt-pbkdf": "^1.0.0",
-				"dashdash": "^1.12.0",
-				"ecc-jsbn": "~0.1.1",
-				"getpass": "^0.1.1",
-				"jsbn": "~0.1.0",
-				"safer-buffer": "^2.0.2",
-				"tweetnacl": "~0.14.0"
-			}
-		},
 		"stat-mode": {
 			"version": "1.0.0",
 			"resolved": "https://registry.npmjs.org/stat-mode/-/stat-mode-1.0.0.tgz",
@@ -6277,15 +5858,6 @@
 			"integrity": "sha512-Iq25XBt6zD5npPhlLVXGFN3/gyR2/qODcKNNyTMd4vbm39HUaOiAM4PMq0eMVC/Tkxz+Zjdsc55g9yyz+Yq00Q==",
 			"dev": true
 		},
-		"tough-cookie": {
-			"version": "2.5.0",
-			"resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.5.0.tgz",
-			"integrity": "sha512-nlLsUzgm1kfLXSXfRZMc1KLAugd4hqJHDTvc2hDIwS3mZAfMEuMbc03SujMF+GEcpaX/qboeycw6iO8JwVv2+g==",
-			"requires": {
-				"psl": "^1.1.28",
-				"punycode": "^2.1.1"
-			}
-		},
 		"traverse": {
 			"version": "0.3.9",
 			"resolved": "https://registry.npmjs.org/traverse/-/traverse-0.3.9.tgz",
@@ -6307,19 +5879,6 @@
 			"dev": true,
 			"optional": true
 		},
-		"tunnel-agent": {
-			"version": "0.6.0",
-			"resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
-			"integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
-			"requires": {
-				"safe-buffer": "^5.0.1"
-			}
-		},
-		"tweetnacl": {
-			"version": "0.14.5",
-			"resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
-			"integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
-		},
 		"type-fest": {
 			"version": "0.13.1",
 			"resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.13.1.tgz",
@@ -6439,6 +5998,7 @@
 			"version": "4.4.1",
 			"resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
 			"integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
+			"dev": true,
 			"requires": {
 				"punycode": "^2.1.0"
 			}
@@ -6463,15 +6023,12 @@
 			"resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
 			"integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
 		},
-		"uuid": {
-			"version": "3.4.0",
-			"resolved": "https://registry.npmjs.org/uuid/-/uuid-3.4.0.tgz",
-			"integrity": "sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A=="
-		},
 		"verror": {
 			"version": "1.10.0",
 			"resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
 			"integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+			"dev": true,
+			"optional": true,
 			"requires": {
 				"assert-plus": "^1.0.0",
 				"core-util-is": "1.0.2",
@@ -6481,7 +6038,9 @@
 				"core-util-is": {
 					"version": "1.0.2",
 					"resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
-					"integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
+					"integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
+					"dev": true,
+					"optional": true
 				}
 			}
 		},
diff --git a/package.json b/package.json
index de8dcee..f6f5b19 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,6 @@
 		"electron-updater": "^4.6.1",
 		"follow-redirects": "^1.14.6",
 		"marked-man": "^0.7.0",
-		"request": "^2.88.2",
 		"unzipper": "^0.10.11"
 	},
 	"devDependencies": {
diff --git a/src/requests.js b/src/requests.js
new file mode 100644
index 0000000..06c5577
--- /dev/null
+++ b/src/requests.js
@@ -0,0 +1,77 @@
+const { app } = require("electron");
+const path = require("path");
+const fs = require("fs");
+const { https } = require("follow-redirects");
+
+
+// all requests results are stored in this file
+const cachePath = path.join(app.getPath("cache"), "requests.json");
+const NORTHSTAR_LATEST_RELEASE_KEY = "nsLatestRelease";
+
+
+function _saveCache(data) {
+    fs.writeFileSync(cachePath, JSON.stringify(data));
+}
+
+function _getRequestsCache() {
+    if (fs.existsSync(cachePath)) {
+        return JSON.parse(fs.readFileSync(cachePath, "utf8"));
+    } else {
+        fs.writeFileSync(cachePath, "{}");
+        return {};
+    }
+}
+
+// Returns latest Northstar version available from GitHub releases. If
+// there's no cache result for this request, or if cache exists but is
+// old, refreshes cache with new data.
+async function getLatestNsVersion() {
+    return new Promise((resolve, reject) => {
+        let cache = _getRequestsCache();
+    
+        if (cache[NORTHSTAR_LATEST_RELEASE_KEY] && (Date.now() - cache[NORTHSTAR_LATEST_RELEASE_KEY]["time"]) < 5 * 60 * 1000) {
+            console.log(`returning ${NORTHSTAR_LATEST_RELEASE_KEY} data from cache`);
+            resolve( cache[NORTHSTAR_LATEST_RELEASE_KEY]["body"]["tag_name"] );
+        } else {
+            https.get({
+                host: "api.github.com",
+                port: 443,
+                path: "/repos/R2Northstar/Northstar/releases/latest",
+                method: "GET",
+                headers: { "User-Agent": "viper" }
+            }, 
+            
+            response => {
+                response.setEncoding("utf8");
+                let responseData = "";
+
+                response.on("data", data => {
+                    responseData += data;
+                });
+
+                response.on("end", _ => {                    
+                    cache[NORTHSTAR_LATEST_RELEASE_KEY] = {
+                        "time": Date.now(),
+                        "body": JSON.parse(responseData)
+                    };
+                    _saveCache(cache);
+                    resolve( cache[NORTHSTAR_LATEST_RELEASE_KEY]["body"]["tag_name"] );
+                });
+            });
+        }
+    });
+}
+
+// Returns the download link to latest Northstar version. Should always
+// be called after getLatestNsVersion, as it refreshes cache data (if
+// needed).
+function getLatestNsVersionLink() {
+    const cache = _getRequestsCache();
+    return cache[NORTHSTAR_LATEST_RELEASE_KEY]["body"].assets[0].browser_download_url;
+}
+
+
+module.exports = {
+    getLatestNsVersion, 
+    getLatestNsVersionLink
+};
diff --git a/src/utils.js b/src/utils.js
index d2e6fe6..85db119 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -7,9 +7,9 @@ const events = new Emitter();
 
 const cli = require("./cli");
 const lang = require("./lang");
+const requests = require("./requests");
 
 const unzip = require("unzipper");
-const request = require("request");
 const exec = require("child_process").spawn;
 const { https } = require("follow-redirects");
 
@@ -69,7 +69,7 @@ function getNSVersion() {
 	}
 }
 
-function update() {
+async function update() {
 	for (let i = 0; i < settings.excludes.length; i++) {
 		let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
 		if (fs.existsSync(exclude)) {
@@ -81,59 +81,53 @@ function update() {
 	console.log(lang("cli.update.checking"));
 	var version = getNSVersion();
 
-	request({
-		json: true,
-		headers: {"User-Agent": "Viper"},
-		url: "https://api.github.com/repos/R2Northstar/Northstar/releases/latest",
-	}, (error, response, body) => {
-		var tag = body["tag_name"];
-
-		if (version === tag) {
-			ipcMain.emit("ns-updated");
-			console.log(lang("cli.update.uptodate"), version);
-
-			winLog(lang("gui.update.uptodate"));
-			return;
-		} else {
-			if (version != "unknown") {
-				console.log(lang("cli.update.current"), version);
-			}; console.log(lang("cli.update.downloading") + ":", tag);
-
-			winLog(lang("gui.update.downloading"));
-		}
+	const latestAvailableVersion = await requests.getLatestNsVersion();
+
+	if (version === latestAvailableVersion) {
+		ipcMain.emit("ns-updated");
+		console.log(lang("cli.update.uptodate"), version);
+
+		winLog(lang("gui.update.uptodate"));
+		return;
+	} else {
+		if (version != "unknown") {
+			console.log(lang("cli.update.current"), version);
+		}; console.log(lang("cli.update.downloading") + ":", latestAvailableVersion);
+
+		winLog(lang("gui.update.downloading"));
+	}
+
+	https.get(requests.getLatestNsVersionLink(), (res) => {
+		let stream = fs.createWriteStream(settings.zip);
+		res.pipe(stream);
+
+		let received = 0;
+		res.on("data", (chunk) => {
+			received += chunk.length;
+			winLog(lang("gui.update.downloading") + " " + (received / 1024 / 1024).toFixed(1) + "mb");
+		})
 
-		https.get(body.assets[0].browser_download_url, (res) => {
-			let stream = fs.createWriteStream(settings.zip);
-			res.pipe(stream);
-
-			let received = 0;
-			res.on("data", (chunk) => {
-				received += chunk.length;
-				winLog(lang("gui.update.downloading") + " " + (received / 1024 / 1024).toFixed(1) + "mb");
-			})
-
-			stream.on("finish", () => {
-				stream.close();
-				winLog(lang("gui.update.extracting"));
-				console.log(lang("cli.update.downloaddone"));
-				fs.createReadStream(settings.zip).pipe(unzip.Extract({path: settings.gamepath}))
-				.on("finish", () => {
-					fs.writeFileSync(path.join(settings.gamepath, "ns_version.txt"), tag);
-					ipcMain.emit("getversion");
-
-					for (let i = 0; i < settings.excludes.length; i++) {
-						let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
-						if (fs.existsSync(exclude + ".excluded")) {
-							fs.renameSync(exclude + ".excluded", exclude)
-						}
+		stream.on("finish", () => {
+			stream.close();
+			winLog(lang("gui.update.extracting"));
+			console.log(lang("cli.update.downloaddone"));
+			fs.createReadStream(settings.zip).pipe(unzip.Extract({path: settings.gamepath}))
+			.on("finish", () => {
+				fs.writeFileSync(path.join(settings.gamepath, "ns_version.txt"), latestAvailableVersion);
+				ipcMain.emit("getversion");
+
+				for (let i = 0; i < settings.excludes.length; i++) {
+					let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
+					if (fs.existsSync(exclude + ".excluded")) {
+						fs.renameSync(exclude + ".excluded", exclude)
 					}
+				}
 
-					ipcMain.emit("ns-updated");
-					winLog(lang("gui.update.finished"));
-					console.log(lang("cli.update.finished"));
-					cli.exit();
-				});
-			})
+				ipcMain.emit("ns-updated");
+				winLog(lang("gui.update.finished"));
+				console.log(lang("cli.update.finished"));
+				cli.exit();
+			});
 		})
 	})
 }