1 line
24 KiB
JSON
1 line
24 KiB
JSON
{"ast":null,"code":"'use strict';\n\nvar net = require('net'),\n tls = require('tls'),\n http = require('http'),\n https = require('https'),\n events = require('events'),\n assert = require('assert'),\n util = require('util'),\n Buffer = require('safe-buffer').Buffer;\n\nexports.httpOverHttp = httpOverHttp;\nexports.httpsOverHttp = httpsOverHttp;\nexports.httpOverHttps = httpOverHttps;\nexports.httpsOverHttps = httpsOverHttps;\n\nfunction httpOverHttp(options) {\n var agent = new TunnelingAgent(options);\n agent.request = http.request;\n return agent;\n}\n\nfunction httpsOverHttp(options) {\n var agent = new TunnelingAgent(options);\n agent.request = http.request;\n agent.createSocket = createSecureSocket;\n agent.defaultPort = 443;\n return agent;\n}\n\nfunction httpOverHttps(options) {\n var agent = new TunnelingAgent(options);\n agent.request = https.request;\n return agent;\n}\n\nfunction httpsOverHttps(options) {\n var agent = new TunnelingAgent(options);\n agent.request = https.request;\n agent.createSocket = createSecureSocket;\n agent.defaultPort = 443;\n return agent;\n}\n\nfunction TunnelingAgent(options) {\n var self = this;\n self.options = options || {};\n self.proxyOptions = self.options.proxy || {};\n self.maxSockets = self.options.maxSockets || http.Agent.defaultMaxSockets;\n self.requests = [];\n self.sockets = [];\n self.on('free', function onFree(socket, host, port) {\n for (var i = 0, len = self.requests.length; i < len; ++i) {\n var pending = self.requests[i];\n\n if (pending.host === host && pending.port === port) {\n // Detect the request to connect same origin server,\n // reuse the connection.\n self.requests.splice(i, 1);\n pending.request.onSocket(socket);\n return;\n }\n }\n\n socket.destroy();\n self.removeSocket(socket);\n });\n}\n\nutil.inherits(TunnelingAgent, events.EventEmitter);\n\nTunnelingAgent.prototype.addRequest = function addRequest(req, options) {\n var self = this; // Legacy API: addRequest(req, host, port, path)\n\n if (typeof options === 'string') {\n options = {\n host: options,\n port: arguments[2],\n path: arguments[3]\n };\n }\n\n if (self.sockets.length >= this.maxSockets) {\n // We are over limit so we'll add it to the queue.\n self.requests.push({\n host: options.host,\n port: options.port,\n request: req\n });\n return;\n } // If we are under maxSockets create a new one.\n\n\n self.createConnection({\n host: options.host,\n port: options.port,\n request: req\n });\n};\n\nTunnelingAgent.prototype.createConnection = function createConnection(pending) {\n var self = this;\n self.createSocket(pending, function (socket) {\n socket.on('free', onFree);\n socket.on('close', onCloseOrRemove);\n socket.on('agentRemove', onCloseOrRemove);\n pending.request.onSocket(socket);\n\n function onFree() {\n self.emit('free', socket, pending.host, pending.port);\n }\n\n function onCloseOrRemove(err) {\n self.removeSocket(socket);\n socket.removeListener('free', onFree);\n socket.removeListener('close', onCloseOrRemove);\n socket.removeListener('agentRemove', onCloseOrRemove);\n }\n });\n};\n\nTunnelingAgent.prototype.createSocket = function createSocket(options, cb) {\n var self = this;\n var placeholder = {};\n self.sockets.push(placeholder);\n var connectOptions = mergeOptions({}, self.proxyOptions, {\n method: 'CONNECT',\n path: options.host + ':' + options.port,\n agent: false\n });\n\n if (connectOptions.proxyAuth) {\n connectOptions.headers = connectOptions.headers || {};\n connectOptions.headers['Proxy-Authorization'] = 'Basic ' + Buffer.from(connectOptions.proxyAuth).toString('base64');\n }\n\n debug('making CONNECT request');\n var connectReq = self.request(connectOptions);\n connectReq.useChunkedEncodingByDefault = false; // for v0.6\n\n connectReq.once('response', onResponse); // for v0.6\n\n connectReq.once('upgrade', onUpgrade); // for v0.6\n\n connectReq.once('connect', onConnect); // for v0.7 or later\n\n connectReq.once('error', onError);\n connectReq.end();\n\n function onResponse(res) {\n // Very hacky. 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host: options,\n port: arguments[2],\n path: arguments[3]\n };\n }\n\n if (self.sockets.length >= this.maxSockets) {\n // We are over limit so we'll add it to the queue.\n self.requests.push({host: options.host, port: options.port, request: req})\n return\n }\n\n // If we are under maxSockets create a new one.\n self.createConnection({host: options.host, port: options.port, request: req})\n}\n\nTunnelingAgent.prototype.createConnection = function createConnection(pending) {\n var self = this\n\n self.createSocket(pending, function(socket) {\n socket.on('free', onFree)\n socket.on('close', onCloseOrRemove)\n socket.on('agentRemove', onCloseOrRemove)\n pending.request.onSocket(socket)\n\n function onFree() {\n self.emit('free', socket, pending.host, pending.port)\n }\n\n function onCloseOrRemove(err) {\n self.removeSocket(socket)\n socket.removeListener('free', onFree)\n socket.removeListener('close', onCloseOrRemove)\n socket.removeListener('agentRemove', onCloseOrRemove)\n }\n })\n}\n\nTunnelingAgent.prototype.createSocket = function createSocket(options, cb) {\n var self = this\n var placeholder = {}\n self.sockets.push(placeholder)\n\n var connectOptions = mergeOptions({}, self.proxyOptions,\n { method: 'CONNECT'\n , path: options.host + ':' + options.port\n , agent: false\n }\n )\n if (connectOptions.proxyAuth) {\n connectOptions.headers = connectOptions.headers || {}\n connectOptions.headers['Proxy-Authorization'] = 'Basic ' +\n Buffer.from(connectOptions.proxyAuth).toString('base64')\n }\n\n debug('making CONNECT request')\n var connectReq = self.request(connectOptions)\n connectReq.useChunkedEncodingByDefault = false // for v0.6\n connectReq.once('response', onResponse) // for v0.6\n connectReq.once('upgrade', onUpgrade) // for v0.6\n connectReq.once('connect', onConnect) // for v0.7 or later\n connectReq.once('error', onError)\n connectReq.end()\n\n function onResponse(res) {\n // Very hacky. This is necessary to avoid http-parser leaks.\n res.upgrade = true\n }\n\n function onUpgrade(res, socket, head) {\n // Hacky.\n process.nextTick(function() {\n onConnect(res, socket, head)\n })\n }\n\n function onConnect(res, socket, head) {\n connectReq.removeAllListeners()\n socket.removeAllListeners()\n\n if (res.statusCode === 200) {\n assert.equal(head.length, 0)\n debug('tunneling connection has established')\n self.sockets[self.sockets.indexOf(placeholder)] = socket\n cb(socket)\n } else {\n debug('tunneling socket could not be established, statusCode=%d', res.statusCode)\n var error = new Error('tunneling socket could not be established, ' + 'statusCode=' + res.statusCode)\n error.code = 'ECONNRESET'\n options.request.emit('error', error)\n self.removeSocket(placeholder)\n }\n }\n\n function onError(cause) {\n connectReq.removeAllListeners()\n\n debug('tunneling socket could not be established, cause=%s\\n', cause.message, cause.stack)\n var error = new Error('tunneling socket could not be established, ' + 'cause=' + cause.message)\n error.code = 'ECONNRESET'\n options.request.emit('error', error)\n self.removeSocket(placeholder)\n }\n}\n\nTunnelingAgent.prototype.removeSocket = function removeSocket(socket) {\n var pos = this.sockets.indexOf(socket)\n if (pos === -1) return\n\n this.sockets.splice(pos, 1)\n\n var pending = this.requests.shift()\n if (pending) {\n // If we have pending requests and a socket gets closed a new one\n // needs to be created to take over in the pool for the one that closed.\n this.createConnection(pending)\n }\n}\n\nfunction createSecureSocket(options, cb) {\n var self = this\n TunnelingAgent.prototype.createSocket.call(self, options, function(socket) {\n // 0 is dummy port for v0.6\n var secureSocket = tls.connect(0, mergeOptions({}, self.options,\n { servername: options.host\n , socket: socket\n }\n ))\n self.sockets[self.sockets.indexOf(socket)] = secureSocket\n cb(secureSocket)\n })\n}\n\n\nfunction mergeOptions(target) {\n for (var i = 1, len = arguments.length; i < len; ++i) {\n var overrides = arguments[i]\n if (typeof overrides === 'object') {\n var keys = Object.keys(overrides)\n for (var j = 0, keyLen = keys.length; j < keyLen; ++j) {\n var k = keys[j]\n if (overrides[k] !== undefined) {\n target[k] = overrides[k]\n }\n }\n }\n }\n return target\n}\n\n\nvar debug\nif (process.env.NODE_DEBUG && /\\btunnel\\b/.test(process.env.NODE_DEBUG)) {\n debug = function() {\n var args = Array.prototype.slice.call(arguments)\n if (typeof args[0] === 'string') {\n args[0] = 'TUNNEL: ' + args[0]\n } else {\n args.unshift('TUNNEL:')\n }\n console.error.apply(console, args)\n }\n} else {\n debug = function() {}\n}\nexports.debug = debug // for test\n"]},"metadata":{},"sourceType":"script"} |