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Merge pull request #2487 from cdr/proxy-docs-86d4
proxy-agent: Use proxy-from-env and add docs
This commit is contained in:
Anmol Sethi
GitHub
commit
cb446666fa
25
doc/FAQ.md
25
doc/FAQ.md
@ -27,6 +27,7 @@
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- [Isn't an install script piped into sh insecure?](#isnt-an-install-script-piped-into-sh-insecure)
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- [How do I make my keyboard shortcuts work?](#how-do-i-make-my-keyboard-shortcuts-work)
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- [Differences compared to Theia?](#differences-compared-to-theia)
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- [`$HTTP_PROXY`, `$HTTPS_PROXY`, `$NO_PROXY`](#http_proxy-https_proxy-no_proxy)
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- [Enterprise](#enterprise)
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<!-- END doctoc generated TOC please keep comment here to allow auto update -->
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@ -338,6 +339,30 @@ You can't just use your VS Code config in Theia like you can with code-server.
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To summarize, code-server is a patched fork of VS Code to run in the browser whereas
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Theia takes some parts of VS Code but is an entirely different editor.
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## `$HTTP_PROXY`, `$HTTPS_PROXY`, `$NO_PROXY`
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code-server supports the standard environment variables to allow directing
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server side requests through a proxy.
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```sh
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export HTTP_PROXY=https://134.8.5.4
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export HTTPS_PROXY=https://134.8.5.4
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# Now all of code-server's server side requests will go through
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# https://134.8.5.4 first.
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code-server
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```
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- See [proxy-from-env](https://www.npmjs.com/package/proxy-from-env#environment-variables)
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for a detailed reference on the various environment variables and their syntax.
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- code-server only uses the `http` and `https` protocols.
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- See [proxy-agent](https://www.npmjs.com/package/proxy-agent) for the various supported
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proxy protocols.
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**note**: Only server side requests will be proxied! This includes fetching extensions,
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requests made from extensions etc. To proxy requests from your browser you need to
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configure your browser separately. Browser requests would cover exploring the extension
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marketplace.
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## Enterprise
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Visit [our enterprise page](https://coder.com) for more information about our
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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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@ -270,6 +270,13 @@
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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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@ -1,12 +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 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 does not have anything to do with the code-server proxy.
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* It's for $HTTP_PROXY support!
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* This file has nothing to do with the code-server proxy.
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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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@ -15,48 +18,64 @@ import * as proxyagent from "proxy-agent"
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*/
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/**
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* monkeyPatch patches the node HTTP/HTTPS library to route all requests through our
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* custom agent from the proxyAgent package.
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* monkeyPatch patches the node http,https modules to route all requests through the
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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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*
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* None of our code ever passes in a explicit agent to the http,https modules.
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* VS Code's does sometimes but only when a user sets the http.proxy configuration.
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* See https://code.visualstudio.com/docs/setup/network#_legacy-proxy-server-support
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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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export function monkeyPatch(vscode: boolean): void {
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// We do not support HTTPS_PROXY here to avoid confusion. proxy-agent will automatically
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// use the correct protocol to connect to the proxy depending on the requested URL.
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//
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// We could implement support ourselves to allow people to configure the proxy used for
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// HTTPS vs HTTP but there doesn't seem to be much value in that.
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//
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// At least of right now, it'd just be plain confusing to support HTTPS_PROXY when proxy-agent
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// will still use HTTP to hit it for HTTP requests.
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const proxyURL = process.env.HTTP_PROXY || process.env.http_proxy
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if (!proxyURL) {
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return
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export function monkeyPatch(inVSCode: boolean): void {
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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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// 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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logger.debug(`using $HTTP_PROXY ${process.env.HTTP_PROXY}`)
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let pa: 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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//
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// I can't enable esModuleInterop in VS Code's build process as it breaks and spits out
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// a huge number of errors.
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if (vscode) {
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pa = new (proxyagent as any)(process.env.HTTP_PROXY)
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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)()
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} else {
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pa = new (proxyagent as any).default(process.env.HTTP_PROXY)
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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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/**
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* None of our code ever passes in a explicit agent to the http modules but VS Code's
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* does sometimes but only when a user sets the http.proxy configuration.
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* See https://code.visualstudio.com/docs/setup/network#_legacy-proxy-server-support
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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 are
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* deprecated anyway.
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*/
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const http = require("http")
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const https = require("https")
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http.globalAgent = pa
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https.globalAgent = pa
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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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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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