"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