102 lines
2.5 KiB
JavaScript
102 lines
2.5 KiB
JavaScript
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/**
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* Module dependencies.
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*/
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require('./patch-core');
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var extend = require('extend');
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var inherits = require('util').inherits;
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var EventEmitter = require('events').EventEmitter;
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/**
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* Module exports.
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*/
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module.exports = Agent;
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/**
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* Base `http.Agent` implementation.
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* No pooling/keep-alive is implemented by default.
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*
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* @param {Function} callback
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* @api public
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*/
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function Agent (callback) {
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if (!(this instanceof Agent)) return new Agent(callback);
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if ('function' != typeof callback) throw new Error('Must pass a "callback function"');
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EventEmitter.call(this);
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this.callback = callback;
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}
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inherits(Agent, EventEmitter);
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/**
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* Called by node-core's "_http_client.js" module when creating
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* a new HTTP request with this Agent instance.
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*
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* @api public
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*/
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Agent.prototype.addRequest = function (req, host, port, localAddress) {
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var opts;
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if ('object' == typeof host) {
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// >= v0.11.x API
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opts = extend({}, req._options, host);
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} else {
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// <= v0.10.x API
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opts = extend({}, req._options, { host: host, port: port });
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if (null != localAddress) {
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opts.localAddress = localAddress;
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}
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}
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if (opts.host && opts.path) {
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// if both a `host` and `path` are specified then it's most likely the
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// result of a `url.parse()` call... we need to remove the `path` portion so
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// that `net.connect()` doesn't attempt to open that as a unix socket file.
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delete opts.path;
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}
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// set default `port` if none was explicitly specified
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if (null == opts.port) {
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opts.port = opts.secureEndpoint ? 443 : 80;
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}
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delete opts.agent;
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delete opts.hostname;
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delete opts._defaultAgent;
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delete opts.defaultPort;
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delete opts.createConnection;
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// hint to use "Connection: close"
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// XXX: non-documented `http` module API :(
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req._last = true;
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req.shouldKeepAlive = false;
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// clean up a bit of memory since we're no longer using this
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req._options = null;
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// create the `net.Socket` instance
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var sync = true;
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this.callback(req, opts, function (err, socket) {
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function emitErr () {
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req.emit('error', err);
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// For Safety. Some additional errors might fire later on
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// and we need to make sure we don't double-fire the error event.
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req._hadError = true;
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}
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if (err) {
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if (sync) {
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// need to defer the "error" event, when sync, because by now the `req`
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// instance hasn't event been passed back to the user yet...
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process.nextTick(emitErr);
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} else {
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emitErr();
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}
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} else {
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req.onSocket(socket);
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}
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});
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sync = false;
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};
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