Index: frontend/node_modules/agent-base/README.md =================================================================== --- frontend/node_modules/agent-base/README.md (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/README.md (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,145 @@ +agent-base +========== +### Turn a function into an [`http.Agent`][http.Agent] instance +[![Build Status](https://github.com/TooTallNate/node-agent-base/workflows/Node%20CI/badge.svg)](https://github.com/TooTallNate/node-agent-base/actions?workflow=Node+CI) + +This module provides an `http.Agent` generator. That is, you pass it an async +callback function, and it returns a new `http.Agent` instance that will invoke the +given callback function when sending outbound HTTP requests. + +#### Some subclasses: + +Here's some more interesting uses of `agent-base`. +Send a pull request to list yours! + + * [`http-proxy-agent`][http-proxy-agent]: An HTTP(s) proxy `http.Agent` implementation for HTTP endpoints + * [`https-proxy-agent`][https-proxy-agent]: An HTTP(s) proxy `http.Agent` implementation for HTTPS endpoints + * [`pac-proxy-agent`][pac-proxy-agent]: A PAC file proxy `http.Agent` implementation for HTTP and HTTPS + * [`socks-proxy-agent`][socks-proxy-agent]: A SOCKS proxy `http.Agent` implementation for HTTP and HTTPS + + +Installation +------------ + +Install with `npm`: + +``` bash +$ npm install agent-base +``` + + +Example +------- + +Here's a minimal example that creates a new `net.Socket` connection to the server +for every HTTP request (i.e. the equivalent of `agent: false` option): + +```js +var net = require('net'); +var tls = require('tls'); +var url = require('url'); +var http = require('http'); +var agent = require('agent-base'); + +var endpoint = 'http://nodejs.org/api/'; +var parsed = url.parse(endpoint); + +// This is the important part! +parsed.agent = agent(function (req, opts) { + var socket; + // `secureEndpoint` is true when using the https module + if (opts.secureEndpoint) { + socket = tls.connect(opts); + } else { + socket = net.connect(opts); + } + return socket; +}); + +// Everything else works just like normal... +http.get(parsed, function (res) { + console.log('"response" event!', res.headers); + res.pipe(process.stdout); +}); +``` + +Returning a Promise or using an `async` function is also supported: + +```js +agent(async function (req, opts) { + await sleep(1000); + // etc… +}); +``` + +Return another `http.Agent` instance to "pass through" the responsibility +for that HTTP request to that agent: + +```js +agent(function (req, opts) { + return opts.secureEndpoint ? https.globalAgent : http.globalAgent; +}); +``` + + +API +--- + +## Agent(Function callback[, Object options]) → [http.Agent][] + +Creates a base `http.Agent` that will execute the callback function `callback` +for every HTTP request that it is used as the `agent` for. The callback function +is responsible for creating a `stream.Duplex` instance of some kind that will be +used as the underlying socket in the HTTP request. + +The `options` object accepts the following properties: + + * `timeout` - Number - Timeout for the `callback()` function in milliseconds. Defaults to Infinity (optional). + +The callback function should have the following signature: + +### callback(http.ClientRequest req, Object options, Function cb) → undefined + +The ClientRequest `req` can be accessed to read request headers and +and the path, etc. The `options` object contains the options passed +to the `http.request()`/`https.request()` function call, and is formatted +to be directly passed to `net.connect()`/`tls.connect()`, or however +else you want a Socket to be created. Pass the created socket to +the callback function `cb` once created, and the HTTP request will +continue to proceed. + +If the `https` module is used to invoke the HTTP request, then the +`secureEndpoint` property on `options` _will be set to `true`_. + + +License +------- + +(The MIT License) + +Copyright (c) 2013 Nathan Rajlich <nathan@tootallnate.net> + +Permission is hereby granted, free of charge, to any person obtaining +a copy of this software and associated documentation files (the +'Software'), to deal in the Software without restriction, including +without limitation the rights to use, copy, modify, merge, publish, +distribute, sublicense, and/or sell copies of the Software, and to +permit persons to whom the Software is furnished to do so, subject to +the following conditions: + +The above copyright notice and this permission notice shall be +included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, +EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +[http-proxy-agent]: https://github.com/TooTallNate/node-http-proxy-agent +[https-proxy-agent]: https://github.com/TooTallNate/node-https-proxy-agent +[pac-proxy-agent]: https://github.com/TooTallNate/node-pac-proxy-agent +[socks-proxy-agent]: https://github.com/TooTallNate/node-socks-proxy-agent +[http.Agent]: https://nodejs.org/api/http.html#http_class_http_agent Index: frontend/node_modules/agent-base/dist/src/index.d.ts =================================================================== --- frontend/node_modules/agent-base/dist/src/index.d.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/dist/src/index.d.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,78 @@ +/// +import net from 'net'; +import http from 'http'; +import https from 'https'; +import { Duplex } from 'stream'; +import { EventEmitter } from 'events'; +declare function createAgent(opts?: createAgent.AgentOptions): createAgent.Agent; +declare function createAgent(callback: createAgent.AgentCallback, opts?: createAgent.AgentOptions): createAgent.Agent; +declare namespace createAgent { + interface ClientRequest extends http.ClientRequest { + _last?: boolean; + _hadError?: boolean; + method: string; + } + interface AgentRequestOptions { + host?: string; + path?: string; + port: number; + } + interface HttpRequestOptions extends AgentRequestOptions, Omit { + secureEndpoint: false; + } + interface HttpsRequestOptions extends AgentRequestOptions, Omit { + secureEndpoint: true; + } + type RequestOptions = HttpRequestOptions | HttpsRequestOptions; + type AgentLike = Pick | http.Agent; + type AgentCallbackReturn = Duplex | AgentLike; + type AgentCallbackCallback = (err?: Error | null, socket?: createAgent.AgentCallbackReturn) => void; + type AgentCallbackPromise = (req: createAgent.ClientRequest, opts: createAgent.RequestOptions) => createAgent.AgentCallbackReturn | Promise; + type AgentCallback = typeof Agent.prototype.callback; + type AgentOptions = { + timeout?: number; + }; + /** + * Base `http.Agent` implementation. + * No pooling/keep-alive is implemented by default. + * + * @param {Function} callback + * @api public + */ + class Agent extends EventEmitter { + timeout: number | null; + maxFreeSockets: number; + maxTotalSockets: number; + maxSockets: number; + sockets: { + [key: string]: net.Socket[]; + }; + freeSockets: { + [key: string]: net.Socket[]; + }; + requests: { + [key: string]: http.IncomingMessage[]; + }; + options: https.AgentOptions; + private promisifiedCallback?; + private explicitDefaultPort?; + private explicitProtocol?; + constructor(callback?: createAgent.AgentCallback | createAgent.AgentOptions, _opts?: createAgent.AgentOptions); + get defaultPort(): number; + set defaultPort(v: number); + get protocol(): string; + set protocol(v: string); + callback(req: createAgent.ClientRequest, opts: createAgent.RequestOptions, fn: createAgent.AgentCallbackCallback): void; + callback(req: createAgent.ClientRequest, opts: createAgent.RequestOptions): createAgent.AgentCallbackReturn | Promise; + /** + * Called by node-core's "_http_client.js" module when creating + * a new HTTP request with this Agent instance. + * + * @api public + */ + addRequest(req: ClientRequest, _opts: RequestOptions): void; + freeSocket(socket: net.Socket, opts: AgentOptions): void; + destroy(): void; + } +} +export = createAgent; Index: frontend/node_modules/agent-base/dist/src/index.js =================================================================== --- frontend/node_modules/agent-base/dist/src/index.js (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/dist/src/index.js (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,203 @@ +"use strict"; +var __importDefault = (this && this.__importDefault) || function (mod) { + return (mod && mod.__esModule) ? mod : { "default": mod }; +}; +const events_1 = require("events"); +const debug_1 = __importDefault(require("debug")); +const promisify_1 = __importDefault(require("./promisify")); +const debug = debug_1.default('agent-base'); +function isAgent(v) { + return Boolean(v) && typeof v.addRequest === 'function'; +} +function isSecureEndpoint() { + const { stack } = new Error(); + if (typeof stack !== 'string') + return false; + return stack.split('\n').some(l => l.indexOf('(https.js:') !== -1 || l.indexOf('node:https:') !== -1); +} +function createAgent(callback, opts) { + return new createAgent.Agent(callback, opts); +} +(function (createAgent) { + /** + * Base `http.Agent` implementation. + * No pooling/keep-alive is implemented by default. + * + * @param {Function} callback + * @api public + */ + class Agent extends events_1.EventEmitter { + constructor(callback, _opts) { + super(); + let opts = _opts; + if (typeof callback === 'function') { + this.callback = callback; + } + else if (callback) { + opts = callback; + } + // Timeout for the socket to be returned from the callback + this.timeout = null; + if (opts && typeof opts.timeout === 'number') { + this.timeout = opts.timeout; + } + // These aren't actually used by `agent-base`, but are required + // for the TypeScript definition files in `@types/node` :/ + this.maxFreeSockets = 1; + this.maxSockets = 1; + this.maxTotalSockets = Infinity; + this.sockets = {}; + this.freeSockets = {}; + this.requests = {}; + this.options = {}; + } + get defaultPort() { + if (typeof this.explicitDefaultPort === 'number') { + return this.explicitDefaultPort; + } + return isSecureEndpoint() ? 443 : 80; + } + set defaultPort(v) { + this.explicitDefaultPort = v; + } + get protocol() { + if (typeof this.explicitProtocol === 'string') { + return this.explicitProtocol; + } + return isSecureEndpoint() ? 'https:' : 'http:'; + } + set protocol(v) { + this.explicitProtocol = v; + } + callback(req, opts, fn) { + throw new Error('"agent-base" has no default implementation, you must subclass and override `callback()`'); + } + /** + * Called by node-core's "_http_client.js" module when creating + * a new HTTP request with this Agent instance. + * + * @api public + */ + addRequest(req, _opts) { + const opts = Object.assign({}, _opts); + if (typeof opts.secureEndpoint !== 'boolean') { + opts.secureEndpoint = isSecureEndpoint(); + } + if (opts.host == null) { + opts.host = 'localhost'; + } + if (opts.port == null) { + opts.port = opts.secureEndpoint ? 443 : 80; + } + if (opts.protocol == null) { + opts.protocol = opts.secureEndpoint ? 'https:' : 'http:'; + } + if (opts.host && opts.path) { + // If both a `host` and `path` are specified then it's most + // likely the result of a `url.parse()` call... we need to + // remove the `path` portion so that `net.connect()` doesn't + // attempt to open that as a unix socket file. + delete opts.path; + } + delete opts.agent; + delete opts.hostname; + delete opts._defaultAgent; + delete opts.defaultPort; + delete opts.createConnection; + // Hint to use "Connection: close" + // XXX: non-documented `http` module API :( + req._last = true; + req.shouldKeepAlive = false; + let timedOut = false; + let timeoutId = null; + const timeoutMs = opts.timeout || this.timeout; + const onerror = (err) => { + if (req._hadError) + return; + req.emit('error', err); + // For Safety. Some additional errors might fire later on + // and we need to make sure we don't double-fire the error event. + req._hadError = true; + }; + const ontimeout = () => { + timeoutId = null; + timedOut = true; + const err = new Error(`A "socket" was not created for HTTP request before ${timeoutMs}ms`); + err.code = 'ETIMEOUT'; + onerror(err); + }; + const callbackError = (err) => { + if (timedOut) + return; + if (timeoutId !== null) { + clearTimeout(timeoutId); + timeoutId = null; + } + onerror(err); + }; + const onsocket = (socket) => { + if (timedOut) + return; + if (timeoutId != null) { + clearTimeout(timeoutId); + timeoutId = null; + } + if (isAgent(socket)) { + // `socket` is actually an `http.Agent` instance, so + // relinquish responsibility for this `req` to the Agent + // from here on + debug('Callback returned another Agent instance %o', socket.constructor.name); + socket.addRequest(req, opts); + return; + } + if (socket) { + socket.once('free', () => { + this.freeSocket(socket, opts); + }); + req.onSocket(socket); + return; + } + const err = new Error(`no Duplex stream was returned to agent-base for \`${req.method} ${req.path}\``); + onerror(err); + }; + if (typeof this.callback !== 'function') { + onerror(new Error('`callback` is not defined')); + return; + } + if (!this.promisifiedCallback) { + if (this.callback.length >= 3) { + debug('Converting legacy callback function to promise'); + this.promisifiedCallback = promisify_1.default(this.callback); + } + else { + this.promisifiedCallback = this.callback; + } + } + if (typeof timeoutMs === 'number' && timeoutMs > 0) { + timeoutId = setTimeout(ontimeout, timeoutMs); + } + if ('port' in opts && typeof opts.port !== 'number') { + opts.port = Number(opts.port); + } + try { + debug('Resolving socket for %o request: %o', opts.protocol, `${req.method} ${req.path}`); + Promise.resolve(this.promisifiedCallback(req, opts)).then(onsocket, callbackError); + } + catch (err) { + Promise.reject(err).catch(callbackError); + } + } + freeSocket(socket, opts) { + debug('Freeing socket %o %o', socket.constructor.name, opts); + socket.destroy(); + } + destroy() { + debug('Destroying agent %o', this.constructor.name); + } + } + createAgent.Agent = Agent; + // So that `instanceof` works correctly + createAgent.prototype = createAgent.Agent.prototype; +})(createAgent || (createAgent = {})); +module.exports = createAgent; +//# sourceMappingURL=index.js.map Index: frontend/node_modules/agent-base/dist/src/index.js.map =================================================================== --- frontend/node_modules/agent-base/dist/src/index.js.map (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/dist/src/index.js.map (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,1 @@ 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Index: frontend/node_modules/agent-base/dist/src/promisify.d.ts =================================================================== --- frontend/node_modules/agent-base/dist/src/promisify.d.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/dist/src/promisify.d.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,4 @@ +import { ClientRequest, RequestOptions, AgentCallbackCallback, AgentCallbackPromise } from './index'; +declare type LegacyCallback = (req: ClientRequest, opts: RequestOptions, fn: AgentCallbackCallback) => void; +export default function promisify(fn: LegacyCallback): AgentCallbackPromise; +export {}; Index: frontend/node_modules/agent-base/dist/src/promisify.js =================================================================== --- frontend/node_modules/agent-base/dist/src/promisify.js (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/dist/src/promisify.js (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,18 @@ +"use strict"; +Object.defineProperty(exports, "__esModule", { value: true }); +function promisify(fn) { + return function (req, opts) { + return new Promise((resolve, reject) => { + fn.call(this, req, opts, (err, rtn) => { + if (err) { + reject(err); + } + else { + resolve(rtn); + } + }); + }); + }; +} +exports.default = promisify; +//# sourceMappingURL=promisify.js.map Index: frontend/node_modules/agent-base/dist/src/promisify.js.map =================================================================== --- frontend/node_modules/agent-base/dist/src/promisify.js.map (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/dist/src/promisify.js.map (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,1 @@ +{"version":3,"file":"promisify.js","sourceRoot":"","sources":["../../src/promisify.ts"],"names":[],"mappings":";;AAeA,SAAwB,SAAS,CAAC,EAAkB;IACnD,OAAO,UAAsB,GAAkB,EAAE,IAAoB;QACpE,OAAO,IAAI,OAAO,CAAC,CAAC,OAAO,EAAE,MAAM,EAAE,EAAE;YACtC,EAAE,CAAC,IAAI,CACN,IAAI,EACJ,GAAG,EACH,IAAI,EACJ,CAAC,GAA6B,EAAE,GAAyB,EAAE,EAAE;gBAC5D,IAAI,GAAG,EAAE;oBACR,MAAM,CAAC,GAAG,CAAC,CAAC;iBACZ;qBAAM;oBACN,OAAO,CAAC,GAAG,CAAC,CAAC;iBACb;YACF,CAAC,CACD,CAAC;QACH,CAAC,CAAC,CAAC;IACJ,CAAC,CAAC;AACH,CAAC;AAjBD,4BAiBC"} Index: frontend/node_modules/agent-base/package.json =================================================================== --- frontend/node_modules/agent-base/package.json (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/package.json (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,64 @@ +{ + "name": "agent-base", + "version": "6.0.2", + "description": "Turn a function into an `http.Agent` instance", + "main": "dist/src/index", + "typings": "dist/src/index", + "files": [ + "dist/src", + "src" + ], + "scripts": { + "prebuild": "rimraf dist", + "build": "tsc", + "postbuild": "cpy --parents src test '!**/*.ts' dist", + "test": "mocha --reporter spec dist/test/*.js", + "test-lint": "eslint src --ext .js,.ts", + "prepublishOnly": "npm run build" + }, + "repository": { + "type": "git", + "url": "git://github.com/TooTallNate/node-agent-base.git" + }, + "keywords": [ + "http", + "agent", + "base", + "barebones", + "https" + ], + "author": "Nathan Rajlich (http://n8.io/)", + "license": "MIT", + "bugs": { + "url": "https://github.com/TooTallNate/node-agent-base/issues" + }, + "dependencies": { + "debug": "4" + }, + "devDependencies": { + "@types/debug": "4", + "@types/mocha": "^5.2.7", + "@types/node": "^14.0.20", + "@types/semver": "^7.1.0", + "@types/ws": "^6.0.3", + "@typescript-eslint/eslint-plugin": "1.6.0", + "@typescript-eslint/parser": "1.1.0", + "async-listen": "^1.2.0", + "cpy-cli": "^2.0.0", + "eslint": "5.16.0", + "eslint-config-airbnb": "17.1.0", + "eslint-config-prettier": "4.1.0", + "eslint-import-resolver-typescript": "1.1.1", + "eslint-plugin-import": "2.16.0", + "eslint-plugin-jsx-a11y": "6.2.1", + "eslint-plugin-react": "7.12.4", + "mocha": "^6.2.0", + "rimraf": "^3.0.0", + "semver": "^7.1.2", + "typescript": "^3.5.3", + "ws": "^3.0.0" + }, + "engines": { + "node": ">= 6.0.0" + } +} Index: frontend/node_modules/agent-base/src/index.ts =================================================================== --- frontend/node_modules/agent-base/src/index.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/src/index.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,345 @@ +import net from 'net'; +import http from 'http'; +import https from 'https'; +import { Duplex } from 'stream'; +import { EventEmitter } from 'events'; +import createDebug from 'debug'; +import promisify from './promisify'; + +const debug = createDebug('agent-base'); + +function isAgent(v: any): v is createAgent.AgentLike { + return Boolean(v) && typeof v.addRequest === 'function'; +} + +function isSecureEndpoint(): boolean { + const { stack } = new Error(); + if (typeof stack !== 'string') return false; + return stack.split('\n').some(l => l.indexOf('(https.js:') !== -1 || l.indexOf('node:https:') !== -1); +} + +function createAgent(opts?: createAgent.AgentOptions): createAgent.Agent; +function createAgent( + callback: createAgent.AgentCallback, + opts?: createAgent.AgentOptions +): createAgent.Agent; +function createAgent( + callback?: createAgent.AgentCallback | createAgent.AgentOptions, + opts?: createAgent.AgentOptions +) { + return new createAgent.Agent(callback, opts); +} + +namespace createAgent { + export interface ClientRequest extends http.ClientRequest { + _last?: boolean; + _hadError?: boolean; + method: string; + } + + export interface AgentRequestOptions { + host?: string; + path?: string; + // `port` on `http.RequestOptions` can be a string or undefined, + // but `net.TcpNetConnectOpts` expects only a number + port: number; + } + + export interface HttpRequestOptions + extends AgentRequestOptions, + Omit { + secureEndpoint: false; + } + + export interface HttpsRequestOptions + extends AgentRequestOptions, + Omit { + secureEndpoint: true; + } + + export type RequestOptions = HttpRequestOptions | HttpsRequestOptions; + + export type AgentLike = Pick | http.Agent; + + export type AgentCallbackReturn = Duplex | AgentLike; + + export type AgentCallbackCallback = ( + err?: Error | null, + socket?: createAgent.AgentCallbackReturn + ) => void; + + export type AgentCallbackPromise = ( + req: createAgent.ClientRequest, + opts: createAgent.RequestOptions + ) => + | createAgent.AgentCallbackReturn + | Promise; + + export type AgentCallback = typeof Agent.prototype.callback; + + export type AgentOptions = { + timeout?: number; + }; + + /** + * Base `http.Agent` implementation. + * No pooling/keep-alive is implemented by default. + * + * @param {Function} callback + * @api public + */ + export class Agent extends EventEmitter { + public timeout: number | null; + public maxFreeSockets: number; + public maxTotalSockets: number; + public maxSockets: number; + public sockets: { + [key: string]: net.Socket[]; + }; + public freeSockets: { + [key: string]: net.Socket[]; + }; + public requests: { + [key: string]: http.IncomingMessage[]; + }; + public options: https.AgentOptions; + private promisifiedCallback?: createAgent.AgentCallbackPromise; + private explicitDefaultPort?: number; + private explicitProtocol?: string; + + constructor( + callback?: createAgent.AgentCallback | createAgent.AgentOptions, + _opts?: createAgent.AgentOptions + ) { + super(); + + let opts = _opts; + if (typeof callback === 'function') { + this.callback = callback; + } else if (callback) { + opts = callback; + } + + // Timeout for the socket to be returned from the callback + this.timeout = null; + if (opts && typeof opts.timeout === 'number') { + this.timeout = opts.timeout; + } + + // These aren't actually used by `agent-base`, but are required + // for the TypeScript definition files in `@types/node` :/ + this.maxFreeSockets = 1; + this.maxSockets = 1; + this.maxTotalSockets = Infinity; + this.sockets = {}; + this.freeSockets = {}; + this.requests = {}; + this.options = {}; + } + + get defaultPort(): number { + if (typeof this.explicitDefaultPort === 'number') { + return this.explicitDefaultPort; + } + return isSecureEndpoint() ? 443 : 80; + } + + set defaultPort(v: number) { + this.explicitDefaultPort = v; + } + + get protocol(): string { + if (typeof this.explicitProtocol === 'string') { + return this.explicitProtocol; + } + return isSecureEndpoint() ? 'https:' : 'http:'; + } + + set protocol(v: string) { + this.explicitProtocol = v; + } + + callback( + req: createAgent.ClientRequest, + opts: createAgent.RequestOptions, + fn: createAgent.AgentCallbackCallback + ): void; + callback( + req: createAgent.ClientRequest, + opts: createAgent.RequestOptions + ): + | createAgent.AgentCallbackReturn + | Promise; + callback( + req: createAgent.ClientRequest, + opts: createAgent.AgentOptions, + fn?: createAgent.AgentCallbackCallback + ): + | createAgent.AgentCallbackReturn + | Promise + | void { + throw new Error( + '"agent-base" has no default implementation, you must subclass and override `callback()`' + ); + } + + /** + * Called by node-core's "_http_client.js" module when creating + * a new HTTP request with this Agent instance. + * + * @api public + */ + addRequest(req: ClientRequest, _opts: RequestOptions): void { + const opts: RequestOptions = { ..._opts }; + + if (typeof opts.secureEndpoint !== 'boolean') { + opts.secureEndpoint = isSecureEndpoint(); + } + + if (opts.host == null) { + opts.host = 'localhost'; + } + + if (opts.port == null) { + opts.port = opts.secureEndpoint ? 443 : 80; + } + + if (opts.protocol == null) { + opts.protocol = opts.secureEndpoint ? 'https:' : 'http:'; + } + + if (opts.host && opts.path) { + // If both a `host` and `path` are specified then it's most + // likely the result of a `url.parse()` call... we need to + // remove the `path` portion so that `net.connect()` doesn't + // attempt to open that as a unix socket file. + delete opts.path; + } + + delete opts.agent; + delete opts.hostname; + delete opts._defaultAgent; + delete opts.defaultPort; + delete opts.createConnection; + + // Hint to use "Connection: close" + // XXX: non-documented `http` module API :( + req._last = true; + req.shouldKeepAlive = false; + + let timedOut = false; + let timeoutId: ReturnType | null = null; + const timeoutMs = opts.timeout || this.timeout; + + const onerror = (err: NodeJS.ErrnoException) => { + if (req._hadError) return; + req.emit('error', err); + // For Safety. Some additional errors might fire later on + // and we need to make sure we don't double-fire the error event. + req._hadError = true; + }; + + const ontimeout = () => { + timeoutId = null; + timedOut = true; + const err: NodeJS.ErrnoException = new Error( + `A "socket" was not created for HTTP request before ${timeoutMs}ms` + ); + err.code = 'ETIMEOUT'; + onerror(err); + }; + + const callbackError = (err: NodeJS.ErrnoException) => { + if (timedOut) return; + if (timeoutId !== null) { + clearTimeout(timeoutId); + timeoutId = null; + } + onerror(err); + }; + + const onsocket = (socket: AgentCallbackReturn) => { + if (timedOut) return; + if (timeoutId != null) { + clearTimeout(timeoutId); + timeoutId = null; + } + + if (isAgent(socket)) { + // `socket` is actually an `http.Agent` instance, so + // relinquish responsibility for this `req` to the Agent + // from here on + debug( + 'Callback returned another Agent instance %o', + socket.constructor.name + ); + (socket as createAgent.Agent).addRequest(req, opts); + return; + } + + if (socket) { + socket.once('free', () => { + this.freeSocket(socket as net.Socket, opts); + }); + req.onSocket(socket as net.Socket); + return; + } + + const err = new Error( + `no Duplex stream was returned to agent-base for \`${req.method} ${req.path}\`` + ); + onerror(err); + }; + + if (typeof this.callback !== 'function') { + onerror(new Error('`callback` is not defined')); + return; + } + + if (!this.promisifiedCallback) { + if (this.callback.length >= 3) { + debug('Converting legacy callback function to promise'); + this.promisifiedCallback = promisify(this.callback); + } else { + this.promisifiedCallback = this.callback; + } + } + + if (typeof timeoutMs === 'number' && timeoutMs > 0) { + timeoutId = setTimeout(ontimeout, timeoutMs); + } + + if ('port' in opts && typeof opts.port !== 'number') { + opts.port = Number(opts.port); + } + + try { + debug( + 'Resolving socket for %o request: %o', + opts.protocol, + `${req.method} ${req.path}` + ); + Promise.resolve(this.promisifiedCallback(req, opts)).then( + onsocket, + callbackError + ); + } catch (err) { + Promise.reject(err).catch(callbackError); + } + } + + freeSocket(socket: net.Socket, opts: AgentOptions) { + debug('Freeing socket %o %o', socket.constructor.name, opts); + socket.destroy(); + } + + destroy() { + debug('Destroying agent %o', this.constructor.name); + } + } + + // So that `instanceof` works correctly + createAgent.prototype = createAgent.Agent.prototype; +} + +export = createAgent; Index: frontend/node_modules/agent-base/src/promisify.ts =================================================================== --- frontend/node_modules/agent-base/src/promisify.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) +++ frontend/node_modules/agent-base/src/promisify.ts (revision 9af201e94b5a79beb92a30858fc54de4bc3b9449) @@ -0,0 +1,33 @@ +import { + Agent, + ClientRequest, + RequestOptions, + AgentCallbackCallback, + AgentCallbackPromise, + AgentCallbackReturn +} from './index'; + +type LegacyCallback = ( + req: ClientRequest, + opts: RequestOptions, + fn: AgentCallbackCallback +) => void; + +export default function promisify(fn: LegacyCallback): AgentCallbackPromise { + return function(this: Agent, req: ClientRequest, opts: RequestOptions) { + return new Promise((resolve, reject) => { + fn.call( + this, + req, + opts, + (err: Error | null | undefined, rtn?: AgentCallbackReturn) => { + if (err) { + reject(err); + } else { + resolve(rtn); + } + } + ); + }); + }; +}