agsamantha/node_modules/http-proxy-agent/dist/index.js

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2024-10-02 15:15:21 -05:00
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.HttpProxyAgent = void 0;
const net = __importStar(require("net"));
const tls = __importStar(require("tls"));
const debug_1 = __importDefault(require("debug"));
const events_1 = require("events");
const agent_base_1 = require("agent-base");
const url_1 = require("url");
const debug = (0, debug_1.default)('http-proxy-agent');
/**
* The `HttpProxyAgent` implements an HTTP Agent subclass that connects
* to the specified "HTTP proxy server" in order to proxy HTTP requests.
*/
class HttpProxyAgent extends agent_base_1.Agent {
constructor(proxy, opts) {
super(opts);
this.proxy = typeof proxy === 'string' ? new url_1.URL(proxy) : proxy;
this.proxyHeaders = opts?.headers ?? {};
debug('Creating new HttpProxyAgent instance: %o', this.proxy.href);
// Trim off the brackets from IPv6 addresses
const host = (this.proxy.hostname || this.proxy.host).replace(/^\[|\]$/g, '');
const port = this.proxy.port
? parseInt(this.proxy.port, 10)
: this.proxy.protocol === 'https:'
? 443
: 80;
this.connectOpts = {
...(opts ? omit(opts, 'headers') : null),
host,
port,
};
}
addRequest(req, opts) {
req._header = null;
this.setRequestProps(req, opts);
// @ts-expect-error `addRequest()` isn't defined in `@types/node`
super.addRequest(req, opts);
}
setRequestProps(req, opts) {
const { proxy } = this;
const protocol = opts.secureEndpoint ? 'https:' : 'http:';
const hostname = req.getHeader('host') || 'localhost';
const base = `${protocol}//${hostname}`;
const url = new url_1.URL(req.path, base);
if (opts.port !== 80) {
url.port = String(opts.port);
}
// Change the `http.ClientRequest` instance's "path" field
// to the absolute path of the URL that will be requested.
req.path = String(url);
// Inject the `Proxy-Authorization` header if necessary.
const headers = typeof this.proxyHeaders === 'function'
? this.proxyHeaders()
: { ...this.proxyHeaders };
if (proxy.username || proxy.password) {
const auth = `${decodeURIComponent(proxy.username)}:${decodeURIComponent(proxy.password)}`;
headers['Proxy-Authorization'] = `Basic ${Buffer.from(auth).toString('base64')}`;
}
if (!headers['Proxy-Connection']) {
headers['Proxy-Connection'] = this.keepAlive
? 'Keep-Alive'
: 'close';
}
for (const name of Object.keys(headers)) {
const value = headers[name];
if (value) {
req.setHeader(name, value);
}
}
}
async connect(req, opts) {
req._header = null;
if (!req.path.includes('://')) {
this.setRequestProps(req, opts);
}
// At this point, the http ClientRequest's internal `_header` field
// might have already been set. If this is the case then we'll need
// to re-generate the string since we just changed the `req.path`.
let first;
let endOfHeaders;
debug('Regenerating stored HTTP header string for request');
req._implicitHeader();
if (req.outputData && req.outputData.length > 0) {
debug('Patching connection write() output buffer with updated header');
first = req.outputData[0].data;
endOfHeaders = first.indexOf('\r\n\r\n') + 4;
req.outputData[0].data =
req._header + first.substring(endOfHeaders);
debug('Output buffer: %o', req.outputData[0].data);
}
// Create a socket connection to the proxy server.
let socket;
if (this.proxy.protocol === 'https:') {
debug('Creating `tls.Socket`: %o', this.connectOpts);
socket = tls.connect(this.connectOpts);
}
else {
debug('Creating `net.Socket`: %o', this.connectOpts);
socket = net.connect(this.connectOpts);
}
// Wait for the socket's `connect` event, so that this `callback()`
// function throws instead of the `http` request machinery. This is
// important for i.e. `PacProxyAgent` which determines a failed proxy
// connection via the `callback()` function throwing.
await (0, events_1.once)(socket, 'connect');
return socket;
}
}
HttpProxyAgent.protocols = ['http', 'https'];
exports.HttpProxyAgent = HttpProxyAgent;
function omit(obj, ...keys) {
const ret = {};
let key;
for (key in obj) {
if (!keys.includes(key)) {
ret[key] = obj[key];
}
}
return ret;
}
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