proxy_agent: Use proxy-from-env for robustness
Now we support pretty much every variable under the sun along with $NO_PROXY all correctly and with minimal code on our end.
This commit is contained in:
Anmol Sethi
parent
94b4ba131e
commit
ae902b9dd1
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@ -65,6 +65,7 @@
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"native-watchdog": "1.3.0",
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"node-pty": "0.10.0-beta17",
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"proxy-agent": "^4.0.0",
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"proxy-from-env": "^1.1.0",
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"rimraf": "^2.2.8",
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"spdlog": "^0.11.1",
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"sudo-prompt": "9.1.1",
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@ -95,6 +96,7 @@
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"@types/minimist": "^1.2.0",
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"@types/mocha": "2.2.39",
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"@types/node": "^12.11.7",
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"@types/proxy-from-env": "^1.0.1",
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"@types/sinon": "^1.16.36",
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"@types/trusted-types": "^1.0.6",
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"@types/vscode-windows-registry": "^1.0.0",
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@ -302,6 +302,13 @@
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resolved "https://registry.yarnpkg.com/@types/node/-/node-13.13.28.tgz#b6d0628b0371d6c629d729c98322de314b640219"
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integrity sha512-EM/qFeRH8ZCD+TlsaIPULyyFm9vOhFIvgskY2JmHbEsWsOPgN+rtjSXrcHGgJpob4Nu17VfO95FKewr0XY7iOQ==
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"@types/proxy-from-env@^1.0.1":
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version "1.0.1"
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resolved "https://registry.yarnpkg.com/@types/proxy-from-env/-/proxy-from-env-1.0.1.tgz#b5f3e99230ca4518af196c18267055fc51f892b7"
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integrity sha512-luG++TFHyS61eKcfkR1CVV6a1GMNXDjtqEQIIfaSHax75xp0HU3SlezjOi1yqubJwrG8e9DeW59n6wTblIDwFg==
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dependencies:
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"@types/node" "*"
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"@types/semver@^5.4.0", "@types/semver@^5.5.0":
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version "5.5.0"
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resolved "https://registry.yarnpkg.com/@types/semver/-/semver-5.5.0.tgz#146c2a29ee7d3bae4bf2fcb274636e264c813c45"
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@ -40,6 +40,7 @@
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"@types/node": "^12.12.7",
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"@types/parcel-bundler": "^1.12.1",
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"@types/pem": "^1.9.5",
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"@types/proxy-from-env": "^1.0.1",
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"@types/safe-compare": "^1.1.0",
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"@types/semver": "^7.1.0",
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"@types/split2": "^2.1.6",
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@ -82,6 +83,7 @@
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"limiter": "^1.1.5",
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"pem": "^1.14.2",
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"proxy-agent": "^4.0.0",
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"proxy-from-env": "^1.1.0",
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"qs": "6.7.0",
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"rotating-file-stream": "^2.1.1",
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"safe-buffer": "^5.1.1",
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@ -1,13 +1,15 @@
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import { logger } from "@coder/logger"
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import * as http from "http"
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import * as url from "url"
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import * as proxyagent from "proxy-agent"
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import * as proxyAgent from "proxy-agent"
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import * as proxyFromEnv from "proxy-from-env"
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/**
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* This file has nothing to do with the code-server proxy.
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* It is for $HTTP_PROXY and $HTTPS_PROXY support.
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* It is to support $HTTP_PROXY, $HTTPS_PROXY and $NO_PROXY.
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*
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* - https://github.com/cdr/code-server/issues/124
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* - https://www.npmjs.com/package/proxy-agent
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* - https://www.npmjs.com/package/proxy-from-env
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*
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* This file exists in two locations:
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* - src/node/proxy_agent.ts
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@ -17,7 +19,7 @@ import * as proxyagent from "proxy-agent"
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/**
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* monkeyPatch patches the node http,https modules to route all requests through the
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* agents we get from the proxy-agent package.
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* agent we get from the proxy-agent package.
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*
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* This approach only works if there is no code specifying an explicit agent when making
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* a request.
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@ -28,29 +30,22 @@ import * as proxyagent from "proxy-agent"
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*
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* Even if they do, it's probably the same proxy so we should be fine! And those knobs
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* are deprecated anyway.
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*
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* We use $HTTP_PROXY for all HTTP resources via a normal HTTP proxy.
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* We use $HTTPS_PROXY for all HTTPS resources via HTTP connect.
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* See https://stackoverflow.com/a/10442767/4283659
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*/
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export function monkeyPatch(inVSCode: boolean): void {
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const http = require("http")
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const https = require("https")
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if (shouldEnableProxy()) {
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const http = require("http")
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const https = require("https")
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const httpProxyURL = process.env.HTTP_PROXY || process.env.http_proxy
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if (httpProxyURL) {
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logger.debug(`using $HTTP_PROXY ${httpProxyURL}`)
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http.globalAgent = newProxyAgent(inVSCode, httpProxyURL)
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}
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const httpsProxyURL = process.env.HTTPS_PROXY || process.env.https_proxy
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if (httpsProxyURL) {
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logger.debug(`using $HTTPS_PROXY ${httpsProxyURL}`)
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https.globalAgent = newProxyAgent(inVSCode, httpsProxyURL)
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// If we do not pass in a proxy URL, proxy-agent will get the URL from the environment.
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// See https://www.npmjs.com/package/proxy-from-env.
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// Also see shouldEnableProxy.
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const pa = newProxyAgent(inVSCode)
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http.globalAgent = pa
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https.globalAgent = pa
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}
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}
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function newProxyAgent(inVSCode: boolean, for: "http" | "https", proxyURL: string): http.Agent {
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function newProxyAgent(inVSCode: boolean): http.Agent {
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// The reasoning for this split is that VS Code's build process does not have
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// esModuleInterop enabled but the code-server one does. As a result depending on where
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// we execute, we either have a default attribute or we don't.
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@ -59,8 +54,28 @@ function newProxyAgent(inVSCode: boolean, for: "http" | "https", proxyURL: strin
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// a huge number of errors. And we can't use require as otherwise the modules won't be
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// included in the final product.
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if (inVSCode) {
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return new (proxyagent as any)(opts)
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return new (proxyAgent as any)()
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} else {
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return new (proxyagent as any).default(opts)
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return new (proxyAgent as any).default()
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}
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}
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// If they have $NO_PROXY set to example.com then this check won't work!
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// But that's drastically unlikely.
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function shouldEnableProxy(): boolean {
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let shouldEnable = false
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const httpProxy = proxyFromEnv.getProxyForUrl(`http://example.com`)
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if (httpProxy) {
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shouldEnable = true
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logger.debug(`using $HTTP_PROXY ${httpProxy}`)
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}
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const httpsProxy = proxyFromEnv.getProxyForUrl(`https://example.com`)
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if (httpsProxy) {
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shouldEnable = true
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logger.debug(`using $HTTPS_PROXY ${httpsProxy}`)
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}
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return shouldEnable
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}
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@ -1137,6 +1137,13 @@
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dependencies:
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"@types/node" "*"
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"@types/proxy-from-env@^1.0.1":
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version "1.0.1"
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resolved "https://registry.yarnpkg.com/@types/proxy-from-env/-/proxy-from-env-1.0.1.tgz#b5f3e99230ca4518af196c18267055fc51f892b7"
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integrity sha512-luG++TFHyS61eKcfkR1CVV6a1GMNXDjtqEQIIfaSHax75xp0HU3SlezjOi1yqubJwrG8e9DeW59n6wTblIDwFg==
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dependencies:
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"@types/node" "*"
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"@types/q@^1.5.1":
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version "1.5.4"
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resolved "https://registry.yarnpkg.com/@types/q/-/q-1.5.4.tgz#15925414e0ad2cd765bfef58842f7e26a7accb24"
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@ -6333,7 +6340,7 @@ proxy-agent@^4.0.0:
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proxy-from-env "^1.0.0"
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socks-proxy-agent "^5.0.0"
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proxy-from-env@^1.0.0:
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proxy-from-env@^1.0.0, proxy-from-env@^1.1.0:
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version "1.1.0"
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resolved "https://registry.yarnpkg.com/proxy-from-env/-/proxy-from-env-1.1.0.tgz#e102f16ca355424865755d2c9e8ea4f24d58c3e2"
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integrity sha512-D+zkORCbA9f1tdWRK0RaCR3GPv50cMxcrz4X8k5LTSUD1Dkw47mKJEZQNunItRTkWwgtaUSo1RVFRIG9ZXiFYg==
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