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Your IP : 18.217.207.109
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.httpsHappyEyeballsAgent = exports.httpHappyEyeballsAgent = void 0;
var dns = _interopRequireWildcard(require("dns"));
var http = _interopRequireWildcard(require("http"));
var https = _interopRequireWildcard(require("https"));
var net = _interopRequireWildcard(require("net"));
var tls = _interopRequireWildcard(require("tls"));
var _manualPromise = require("./manualPromise");
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
/**
* Copyright (c) Microsoft Corporation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Implementation(partial) of Happy Eyeballs 2 algorithm described in
// https://www.rfc-editor.org/rfc/rfc8305
// Same as in Chromium (https://source.chromium.org/chromium/chromium/src/+/5666ff4f5077a7e2f72902f3a95f5d553ea0d88d:net/socket/transport_connect_job.cc;l=102)
const connectionAttemptDelayMs = 300;
class HttpHappyEyeballsAgent extends http.Agent {
createConnection(options, oncreate) {
// There is no ambiguity in case of IP address.
if (net.isIP(clientRequestArgsToHostName(options))) return net.createConnection(options);
createConnectionAsync(options, oncreate, /* useTLS */false).catch(err => oncreate === null || oncreate === void 0 ? void 0 : oncreate(err));
}
}
class HttpsHappyEyeballsAgent extends https.Agent {
createConnection(options, oncreate) {
// There is no ambiguity in case of IP address.
if (net.isIP(clientRequestArgsToHostName(options))) return tls.connect(options);
createConnectionAsync(options, oncreate, /* useTLS */true).catch(err => oncreate === null || oncreate === void 0 ? void 0 : oncreate(err));
}
}
const httpsHappyEyeballsAgent = new HttpsHappyEyeballsAgent();
exports.httpsHappyEyeballsAgent = httpsHappyEyeballsAgent;
const httpHappyEyeballsAgent = new HttpHappyEyeballsAgent();
exports.httpHappyEyeballsAgent = httpHappyEyeballsAgent;
async function createConnectionAsync(options, oncreate, useTLS) {
const lookup = options.__testHookLookup || lookupAddresses;
const hostname = clientRequestArgsToHostName(options);
const addresses = await lookup(hostname);
const sockets = new Set();
let firstError;
let errorCount = 0;
const handleError = (socket, err) => {
var _firstError;
if (!sockets.delete(socket)) return;
++errorCount;
(_firstError = firstError) !== null && _firstError !== void 0 ? _firstError : firstError = err;
if (errorCount === addresses.length) oncreate === null || oncreate === void 0 ? void 0 : oncreate(firstError);
};
const connected = new _manualPromise.ManualPromise();
for (const {
address
} of addresses) {
const socket = useTLS ? tls.connect({
...options,
port: options.port,
host: address,
servername: hostname
}) : net.createConnection({
...options,
port: options.port,
host: address
});
// Each socket may fire only one of 'connect', 'timeout' or 'error' events.
// None of these events are fired after socket.destroy() is called.
socket.on('connect', () => {
connected.resolve();
oncreate === null || oncreate === void 0 ? void 0 : oncreate(null, socket);
// TODO: Cache the result?
// Close other outstanding sockets.
sockets.delete(socket);
for (const s of sockets) s.destroy();
sockets.clear();
});
socket.on('timeout', () => {
// Timeout is not an error, so we have to manually close the socket.
socket.destroy();
handleError(socket, new Error('Connection timeout'));
});
socket.on('error', e => handleError(socket, e));
sockets.add(socket);
await Promise.race([connected, new Promise(f => setTimeout(f, connectionAttemptDelayMs))]);
if (connected.isDone()) break;
}
}
async function lookupAddresses(hostname) {
const addresses = await dns.promises.lookup(hostname, {
all: true,
family: 0,
verbatim: true
});
let firstFamily = addresses.filter(({
family
}) => family === 6);
let secondFamily = addresses.filter(({
family
}) => family === 4);
// Make sure first address in the list is the same as in the original order.
if (firstFamily.length && firstFamily[0] !== addresses[0]) {
const tmp = firstFamily;
firstFamily = secondFamily;
secondFamily = tmp;
}
const result = [];
// Alternate ipv6 and ipv4 addreses.
for (let i = 0; i < Math.max(firstFamily.length, secondFamily.length); i++) {
if (firstFamily[i]) result.push(firstFamily[i]);
if (secondFamily[i]) result.push(secondFamily[i]);
}
return result;
}
function clientRequestArgsToHostName(options) {
if (options.hostname) return options.hostname;
if (options.host) return options.host.split(':')[0];
throw new Error('Either options.hostname or options.host must be provided');
}