rc-web@69: /*!
rc-web@69:  * socket.io-node
rc-web@69:  * Copyright(c) 2011 LearnBoost <dev@learnboost.com>
rc-web@69:  * MIT Licensed
rc-web@69:  */
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Module dependencies.
rc-web@69:  */
rc-web@69: 
rc-web@69: var fs = require('fs')
rc-web@69:   , url = require('url')
rc-web@69:   , tty = require('tty')
rc-web@69:   , crypto = require('crypto')
rc-web@69:   , util = require('./util')
rc-web@69:   , store = require('./store')
rc-web@69:   , client = require('socket.io-client')
rc-web@69:   , transports = require('./transports')
rc-web@69:   , Logger = require('./logger')
rc-web@69:   , Socket = require('./socket')
rc-web@69:   , MemoryStore = require('./stores/memory')
rc-web@69:   , SocketNamespace = require('./namespace')
rc-web@69:   , Static = require('./static')
rc-web@69:   , EventEmitter = process.EventEmitter;
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Export the constructor.
rc-web@69:  */
rc-web@69: 
rc-web@69: exports = module.exports = Manager;
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Default transports.
rc-web@69:  */
rc-web@69: 
rc-web@69: var defaultTransports = exports.defaultTransports = [
rc-web@69:     'websocket'
rc-web@69:   , 'htmlfile'
rc-web@69:   , 'xhr-polling'
rc-web@69:   , 'jsonp-polling'
rc-web@69: ];
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Inherited defaults.
rc-web@69:  */
rc-web@69: 
rc-web@69: var parent = module.parent.exports
rc-web@69:   , protocol = parent.protocol
rc-web@69:   , jsonpolling_re = /^\d+$/;
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Manager constructor.
rc-web@69:  *
rc-web@69:  * @param {HTTPServer} server
rc-web@69:  * @param {Object} options, optional
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: function Manager (server, options) {
rc-web@69:   this.server = server;
rc-web@69:   this.namespaces = {};
rc-web@69:   this.sockets = this.of('');
rc-web@69:   this.settings = {
rc-web@69:       origins: '*:*'
rc-web@69:     , log: true
rc-web@69:     , store: new MemoryStore
rc-web@69:     , logger: new Logger
rc-web@69:     , static: new Static(this)
rc-web@69:     , heartbeats: true
rc-web@69:     , resource: '/socket.io'
rc-web@69:     , transports: defaultTransports
rc-web@69:     , authorization: false
rc-web@69:     , blacklist: ['disconnect']
rc-web@69:     , 'log level': 3
rc-web@69:     , 'log colors': tty.isatty(process.stdout.fd)
rc-web@69:     , 'close timeout': 60
rc-web@69:     , 'heartbeat interval': 25
rc-web@69:     , 'heartbeat timeout': 60
rc-web@69:     , 'polling duration': 20
rc-web@69:     , 'flash policy server': true
rc-web@69:     , 'flash policy port': 10843
rc-web@69:     , 'destroy upgrade': true
rc-web@69:     , 'destroy buffer size': 10E7
rc-web@69:     , 'browser client': true
rc-web@69:     , 'browser client cache': true
rc-web@69:     , 'browser client minification': false
rc-web@69:     , 'browser client etag': false
rc-web@69:     , 'browser client expires': 315360000
rc-web@69:     , 'browser client gzip': false
rc-web@69:     , 'browser client handler': false
rc-web@69:     , 'client store expiration': 15
rc-web@69:     , 'match origin protocol': false
rc-web@69:   };
rc-web@69: 
rc-web@69:   for (var i in options) {
rc-web@69:     if (options.hasOwnProperty(i)) {
rc-web@69:       this.settings[i] = options[i];
rc-web@69:     }
rc-web@69:   }
rc-web@69: 
rc-web@69:   var self = this;
rc-web@69: 
rc-web@69:   // default error handler
rc-web@69:   server.on('error', function(err) {
rc-web@69:     self.log.warn('error raised: ' + err);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.initStore();
rc-web@69: 
rc-web@69:   this.on('set:store', function() {
rc-web@69:     self.initStore();
rc-web@69:   });
rc-web@69: 
rc-web@69:   // reset listeners
rc-web@69:   this.oldListeners = server.listeners('request').splice(0);
rc-web@69:   server.removeAllListeners('request');
rc-web@69: 
rc-web@69:   server.on('request', function (req, res) {
rc-web@69:     self.handleRequest(req, res);
rc-web@69:   });
rc-web@69: 
rc-web@69:   server.on('upgrade', function (req, socket, head) {
rc-web@69:     self.handleUpgrade(req, socket, head);
rc-web@69:   });
rc-web@69: 
rc-web@69:   server.on('close', function () {
rc-web@69:     clearInterval(self.gc);
rc-web@69:   });
rc-web@69: 
rc-web@69:   server.once('listening', function () {
rc-web@69:     self.gc = setInterval(self.garbageCollection.bind(self), 10000);
rc-web@69:   });
rc-web@69: 
rc-web@69:   for (var i in transports) {
rc-web@69:     if (transports.hasOwnProperty(i)) {
rc-web@69:       if (transports[i].init) {
rc-web@69:         transports[i].init(this);
rc-web@69:       }
rc-web@69:     }
rc-web@69:   }
rc-web@69: 
rc-web@69:   // forward-compatibility with 1.0
rc-web@69:   var self = this;
rc-web@69:   this.sockets.on('connection', function (conn) {
rc-web@69:     self.emit('connection', conn);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.sequenceNumber = Date.now() | 0;
rc-web@69:  
rc-web@69:   this.log.info('socket.io started');
rc-web@69: };
rc-web@69: 
rc-web@69: Manager.prototype.__proto__ = EventEmitter.prototype
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Store accessor shortcut.
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.__defineGetter__('store', function () {
rc-web@69:   var store = this.get('store');
rc-web@69:   store.manager = this;
rc-web@69:   return store;
rc-web@69: });
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Logger accessor.
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.__defineGetter__('log', function () {
rc-web@69:   var logger = this.get('logger');
rc-web@69: 
rc-web@69:   logger.level = this.get('log level') || -1;
rc-web@69:   logger.colors = this.get('log colors');
rc-web@69:   logger.enabled = this.enabled('log');
rc-web@69: 
rc-web@69:   return logger;
rc-web@69: });
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Static accessor.
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.__defineGetter__('static', function () {
rc-web@69:   return this.get('static');
rc-web@69: });
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Get settings.
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.get = function (key) {
rc-web@69:   return this.settings[key];
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Set settings
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.set = function (key, value) {
rc-web@69:   if (arguments.length == 1) return this.get(key);
rc-web@69:   this.settings[key] = value;
rc-web@69:   this.emit('set:' + key, this.settings[key], key);
rc-web@69:   return this;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Enable a setting
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.enable = function (key) {
rc-web@69:   this.settings[key] = true;
rc-web@69:   this.emit('set:' + key, this.settings[key], key);
rc-web@69:   return this;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Disable a setting
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.disable = function (key) {
rc-web@69:   this.settings[key] = false;
rc-web@69:   this.emit('set:' + key, this.settings[key], key);
rc-web@69:   return this;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Checks if a setting is enabled
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.enabled = function (key) {
rc-web@69:   return !!this.settings[key];
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Checks if a setting is disabled
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.disabled = function (key) {
rc-web@69:   return !this.settings[key];
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Configure callbacks.
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.configure = function (env, fn) {
rc-web@69:   if ('function' == typeof env) {
rc-web@69:     env.call(this);
rc-web@69:   } else if (env == (process.env.NODE_ENV || 'development')) {
rc-web@69:     fn.call(this);
rc-web@69:   }
rc-web@69: 
rc-web@69:   return this;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Initializes everything related to the message dispatcher.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.initStore = function () {
rc-web@69:   this.handshaken = {};
rc-web@69:   this.connected = {};
rc-web@69:   this.open = {};
rc-web@69:   this.closed = {};
rc-web@69:   this.rooms = {};
rc-web@69:   this.roomClients = {};
rc-web@69: 
rc-web@69:   var self = this;
rc-web@69: 
rc-web@69:   this.store.subscribe('handshake', function (id, data) {
rc-web@69:     self.onHandshake(id, data);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('connect', function (id) {
rc-web@69:     self.onConnect(id);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('open', function (id) {
rc-web@69:     self.onOpen(id);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('join', function (id, room) {
rc-web@69:     self.onJoin(id, room);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('leave', function (id, room) {
rc-web@69:     self.onLeave(id, room);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('close', function (id) {
rc-web@69:     self.onClose(id);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('dispatch', function (room, packet, volatile, exceptions) {
rc-web@69:     self.onDispatch(room, packet, volatile, exceptions);
rc-web@69:   });
rc-web@69: 
rc-web@69:   this.store.subscribe('disconnect', function (id) {
rc-web@69:     self.onDisconnect(id);
rc-web@69:   });
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client handshakes.
rc-web@69:  *
rc-web@69:  * @param text
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onHandshake = function (id, data) {
rc-web@69:   this.handshaken[id] = data;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client connects (ie: transport first opens)
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onConnect = function (id) {
rc-web@69:   this.connected[id] = true;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client opens a request in a different node.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onOpen = function (id) {
rc-web@69:   this.open[id] = true;
rc-web@69: 
rc-web@69:   if (this.closed[id]) {
rc-web@69:     var self = this;
rc-web@69: 
rc-web@69:     this.store.unsubscribe('dispatch:' + id, function () {
rc-web@69:       var transport = self.transports[id];
rc-web@69:       if (self.closed[id] && self.closed[id].length && transport) {
rc-web@69: 
rc-web@69:         // if we have buffered messages that accumulate between calling
rc-web@69:         // onOpen an this async callback, send them if the transport is 
rc-web@69:         // still open, otherwise leave them buffered
rc-web@69:         if (transport.open) {
rc-web@69:           transport.payload(self.closed[id]);
rc-web@69:           self.closed[id] = [];
rc-web@69:         }
rc-web@69:       }
rc-web@69:     });
rc-web@69:   }
rc-web@69: 
rc-web@69:   // clear the current transport
rc-web@69:   if (this.transports[id]) {
rc-web@69:     this.transports[id].discard();
rc-web@69:     this.transports[id] = null;
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a message is sent to a namespace and/or room.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onDispatch = function (room, packet, volatile, exceptions) {
rc-web@69:   if (this.rooms[room]) {
rc-web@69:     for (var i = 0, l = this.rooms[room].length; i < l; i++) {
rc-web@69:       var id = this.rooms[room][i];
rc-web@69: 
rc-web@69:       if (!~exceptions.indexOf(id)) {
rc-web@69:         if (this.transports[id] && this.transports[id].open) {
rc-web@69:           this.transports[id].onDispatch(packet, volatile);
rc-web@69:         } else if (!volatile) {
rc-web@69:           this.onClientDispatch(id, packet);
rc-web@69:         }
rc-web@69:       }
rc-web@69:     }
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client joins a nsp / room.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onJoin = function (id, name) {
rc-web@69:   if (!this.roomClients[id]) {
rc-web@69:     this.roomClients[id] = {};
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (!this.rooms[name]) {
rc-web@69:     this.rooms[name] = [];
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (!~this.rooms[name].indexOf(id)) {
rc-web@69:     this.rooms[name].push(id);
rc-web@69:     this.roomClients[id][name] = true;
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client leaves a nsp / room.
rc-web@69:  *
rc-web@69:  * @param private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onLeave = function (id, room) {
rc-web@69:   if (this.rooms[room]) {
rc-web@69:     var index = this.rooms[room].indexOf(id);
rc-web@69: 
rc-web@69:     if (index >= 0) {
rc-web@69:       this.rooms[room].splice(index, 1);
rc-web@69:     }
rc-web@69: 
rc-web@69:     if (!this.rooms[room].length) {
rc-web@69:       delete this.rooms[room];
rc-web@69:     }
rc-web@69: 
rc-web@69:     if (this.roomClients[id]) {
rc-web@69:       delete this.roomClients[id][room];
rc-web@69:     }
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client closes a request in different node.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onClose = function (id) {
rc-web@69:   if (this.open[id]) {
rc-web@69:     delete this.open[id];
rc-web@69:   }
rc-web@69: 
rc-web@69:   this.closed[id] = [];
rc-web@69: 
rc-web@69:   var self = this;
rc-web@69: 
rc-web@69:   this.store.subscribe('dispatch:' + id, function (packet, volatile) {
rc-web@69:     if (!volatile) {
rc-web@69:       self.onClientDispatch(id, packet);
rc-web@69:     }
rc-web@69:   });
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Dispatches a message for a closed client.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onClientDispatch = function (id, packet) {
rc-web@69:   if (this.closed[id]) {
rc-web@69:     this.closed[id].push(packet);
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Receives a message for a client.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onClientMessage = function (id, packet) {
rc-web@69:   if (this.namespaces[packet.endpoint]) {
rc-web@69:     this.namespaces[packet.endpoint].handlePacket(id, packet);
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Fired when a client disconnects (not triggered).
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onClientDisconnect = function (id, reason) {
rc-web@69:   for (var name in this.namespaces) {
rc-web@69:     if (this.namespaces.hasOwnProperty(name)) {
rc-web@69:       this.namespaces[name].handleDisconnect(id, reason, typeof this.roomClients[id] !== 'undefined' &&
rc-web@69:         typeof this.roomClients[id][name] !== 'undefined');
rc-web@69:     }
rc-web@69:   }
rc-web@69: 
rc-web@69:   this.onDisconnect(id);
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Called when a client disconnects.
rc-web@69:  *
rc-web@69:  * @param text
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.onDisconnect = function (id, local) {
rc-web@69:   delete this.handshaken[id];
rc-web@69: 
rc-web@69:   if (this.open[id]) {
rc-web@69:     delete this.open[id];
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (this.connected[id]) {
rc-web@69:     delete this.connected[id];
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (this.transports[id]) {
rc-web@69:     this.transports[id].discard();
rc-web@69:     delete this.transports[id];
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (this.closed[id]) {
rc-web@69:     delete this.closed[id];
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (this.roomClients[id]) {
rc-web@69:     for (var room in this.roomClients[id]) {
rc-web@69:       if (this.roomClients[id].hasOwnProperty(room)) {
rc-web@69:         this.onLeave(id, room);
rc-web@69:       }
rc-web@69:     }
rc-web@69:     delete this.roomClients[id]
rc-web@69:   }
rc-web@69: 
rc-web@69:   this.store.destroyClient(id, this.get('client store expiration'));
rc-web@69: 
rc-web@69:   this.store.unsubscribe('dispatch:' + id);
rc-web@69: 
rc-web@69:   if (local) {
rc-web@69:     this.store.unsubscribe('message:' + id);
rc-web@69:     this.store.unsubscribe('disconnect:' + id);
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Handles an HTTP request.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handleRequest = function (req, res) {
rc-web@69:   var data = this.checkRequest(req);
rc-web@69: 
rc-web@69:   if (!data) {
rc-web@69:     for (var i = 0, l = this.oldListeners.length; i < l; i++) {
rc-web@69:       this.oldListeners[i].call(this.server, req, res);
rc-web@69:     }
rc-web@69: 
rc-web@69:     return;
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (data.static || !data.transport && !data.protocol) {
rc-web@69:     if (data.static && this.enabled('browser client')) {
rc-web@69:       this.static.write(data.path, req, res);
rc-web@69:     } else {
rc-web@69:       res.writeHead(200);
rc-web@69:       res.end('Welcome to socket.io.');
rc-web@69: 
rc-web@69:       this.log.info('unhandled socket.io url');
rc-web@69:     }
rc-web@69: 
rc-web@69:     return;
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (data.protocol != protocol) {
rc-web@69:     res.writeHead(500);
rc-web@69:     res.end('Protocol version not supported.');
rc-web@69: 
rc-web@69:     this.log.info('client protocol version unsupported');
rc-web@69:   } else {
rc-web@69:     if (data.id) {
rc-web@69:       this.handleHTTPRequest(data, req, res);
rc-web@69:     } else {
rc-web@69:       this.handleHandshake(data, req, res);
rc-web@69:     }
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Handles an HTTP Upgrade.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handleUpgrade = function (req, socket, head) {
rc-web@69:   var data = this.checkRequest(req)
rc-web@69:     , self = this;
rc-web@69: 
rc-web@69:   if (!data) {
rc-web@69:     if (this.enabled('destroy upgrade')) {
rc-web@69:       socket.end();
rc-web@69:       this.log.debug('destroying non-socket.io upgrade');
rc-web@69:     }
rc-web@69: 
rc-web@69:     return;
rc-web@69:   }
rc-web@69: 
rc-web@69:   req.head = head;
rc-web@69:   this.handleClient(data, req);
rc-web@69:   req.head = null;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Handles a normal handshaken HTTP request (eg: long-polling)
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handleHTTPRequest = function (data, req, res) {
rc-web@69:   req.res = res;
rc-web@69:   this.handleClient(data, req);
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Intantiantes a new client.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handleClient = function (data, req) {
rc-web@69:   var socket = req.socket
rc-web@69:     , store = this.store
rc-web@69:     , self = this;
rc-web@69: 
rc-web@69:   // handle sync disconnect xhrs
rc-web@69:   if (undefined != data.query.disconnect) {
rc-web@69:     if (this.transports[data.id] && this.transports[data.id].open) {
rc-web@69:       this.transports[data.id].onForcedDisconnect();
rc-web@69:     } else {
rc-web@69:       this.store.publish('disconnect-force:' + data.id);
rc-web@69:     }
rc-web@69:     req.res.writeHead(200);
rc-web@69:     req.res.end();
rc-web@69:     return;
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (!~this.get('transports').indexOf(data.transport)) {
rc-web@69:     this.log.warn('unknown transport: "' + data.transport + '"');
rc-web@69:     req.connection.end();
rc-web@69:     return;
rc-web@69:   }
rc-web@69: 
rc-web@69:   var transport = new transports[data.transport](this, data, req)
rc-web@69:     , handshaken = this.handshaken[data.id];
rc-web@69: 
rc-web@69:   if (transport.disconnected) {
rc-web@69:     // failed during transport setup
rc-web@69:     req.connection.end();
rc-web@69:     return;
rc-web@69:   }
rc-web@69:   if (handshaken) {
rc-web@69:     if (transport.open) {
rc-web@69:       if (this.closed[data.id] && this.closed[data.id].length) {
rc-web@69:         transport.payload(this.closed[data.id]);
rc-web@69:         this.closed[data.id] = [];
rc-web@69:       }
rc-web@69: 
rc-web@69:       this.onOpen(data.id);
rc-web@69:       this.store.publish('open', data.id);
rc-web@69:       this.transports[data.id] = transport;
rc-web@69:     }
rc-web@69: 
rc-web@69:     if (!this.connected[data.id]) {
rc-web@69:       this.onConnect(data.id);
rc-web@69:       this.store.publish('connect', data.id);
rc-web@69: 
rc-web@69:       // flag as used
rc-web@69:       delete handshaken.issued;
rc-web@69:       this.onHandshake(data.id, handshaken);
rc-web@69:       this.store.publish('handshake', data.id, handshaken);
rc-web@69: 
rc-web@69:       // initialize the socket for all namespaces
rc-web@69:       for (var i in this.namespaces) {
rc-web@69:         if (this.namespaces.hasOwnProperty(i)) {
rc-web@69:           var socket = this.namespaces[i].socket(data.id, true);
rc-web@69: 
rc-web@69:           // echo back connect packet and fire connection event
rc-web@69:           if (i === '') {
rc-web@69:             this.namespaces[i].handlePacket(data.id, { type: 'connect' });
rc-web@69:           }
rc-web@69:         }
rc-web@69:       }
rc-web@69: 
rc-web@69:       this.store.subscribe('message:' + data.id, function (packet) {
rc-web@69:         self.onClientMessage(data.id, packet);
rc-web@69:       });
rc-web@69: 
rc-web@69:       this.store.subscribe('disconnect:' + data.id, function (reason) {
rc-web@69:         self.onClientDisconnect(data.id, reason);
rc-web@69:       });
rc-web@69:     }
rc-web@69:   } else {
rc-web@69:     if (transport.open) {
rc-web@69:       transport.error('client not handshaken', 'reconnect');
rc-web@69:     }
rc-web@69: 
rc-web@69:     transport.discard();
rc-web@69:   }
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Generates a session id.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.generateId = function () {
rc-web@69:   var rand = new Buffer(15); // multiple of 3 for base64
rc-web@69:   if (!rand.writeInt32BE) {
rc-web@69:     return Math.abs(Math.random() * Math.random() * Date.now() | 0).toString()
rc-web@69:       + Math.abs(Math.random() * Math.random() * Date.now() | 0).toString();
rc-web@69:   }
rc-web@69:   this.sequenceNumber = (this.sequenceNumber + 1) | 0;
rc-web@69:   rand.writeInt32BE(this.sequenceNumber, 11);
rc-web@69:   if (crypto.randomBytes) {
rc-web@69:     crypto.randomBytes(12).copy(rand);
rc-web@69:   } else {
rc-web@69:     // not secure for node 0.4
rc-web@69:     [0, 4, 8].forEach(function(i) {
rc-web@69:       rand.writeInt32BE(Math.random() * Math.pow(2, 32) | 0, i);
rc-web@69:     });
rc-web@69:   }
rc-web@69:   return rand.toString('base64').replace(/\//g, '_').replace(/\+/g, '-');
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Handles a handshake request.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handleHandshake = function (data, req, res) {
rc-web@69:   var self = this
rc-web@69:     , origin = req.headers.origin
rc-web@69:     , headers = {
rc-web@69:         'Content-Type': 'text/plain'
rc-web@69:     };
rc-web@69: 
rc-web@69:   function writeErr (status, message) {
rc-web@69:     if (data.query.jsonp && jsonpolling_re.test(data.query.jsonp)) {
rc-web@69:       res.writeHead(200, { 'Content-Type': 'application/javascript' });
rc-web@69:       res.end('io.j[' + data.query.jsonp + '](new Error("' + message + '"));');
rc-web@69:     } else {
rc-web@69:       res.writeHead(status, headers);
rc-web@69:       res.end(message);
rc-web@69:     }
rc-web@69:   };
rc-web@69: 
rc-web@69:   function error (err) {
rc-web@69:     writeErr(500, 'handshake error');
rc-web@69:     self.log.warn('handshake error ' + err);
rc-web@69:   };
rc-web@69: 
rc-web@69:   if (!this.verifyOrigin(req)) {
rc-web@69:     writeErr(403, 'handshake bad origin');
rc-web@69:     return;
rc-web@69:   }
rc-web@69: 
rc-web@69:   var handshakeData = this.handshakeData(data);
rc-web@69: 
rc-web@69:   if (origin) {
rc-web@69:     // https://developer.mozilla.org/En/HTTP_Access_Control
rc-web@69:     headers['Access-Control-Allow-Origin'] = origin;
rc-web@69:     headers['Access-Control-Allow-Credentials'] = 'true';
rc-web@69:   }
rc-web@69: 
rc-web@69:   this.authorize(handshakeData, function (err, authorized, newData) {
rc-web@69:     if (err) return error(err);
rc-web@69: 
rc-web@69:     if (authorized) {
rc-web@69:       var id = self.generateId()
rc-web@69:         , hs = [
rc-web@69:               id
rc-web@69:             , self.enabled('heartbeats') ? self.get('heartbeat timeout') || '' : ''
rc-web@69:             , self.get('close timeout') || ''
rc-web@69:             , self.transports(data).join(',')
rc-web@69:           ].join(':');
rc-web@69: 
rc-web@69:       if (data.query.jsonp && jsonpolling_re.test(data.query.jsonp)) {
rc-web@69:         hs = 'io.j[' + data.query.jsonp + '](' + JSON.stringify(hs) + ');';
rc-web@69:         res.writeHead(200, { 'Content-Type': 'application/javascript' });
rc-web@69:       } else {
rc-web@69:         res.writeHead(200, headers);
rc-web@69:       }
rc-web@69: 
rc-web@69:       res.end(hs);
rc-web@69: 
rc-web@69:       self.onHandshake(id, newData || handshakeData);
rc-web@69:       self.store.publish('handshake', id, newData || handshakeData);
rc-web@69: 
rc-web@69:       self.log.info('handshake authorized', id);
rc-web@69:     } else {
rc-web@69:       writeErr(403, 'handshake unauthorized');
rc-web@69:       self.log.info('handshake unauthorized');
rc-web@69:     }
rc-web@69:   })
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Gets normalized handshake data
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handshakeData = function (data) {
rc-web@69:   var connection = data.request.connection
rc-web@69:     , connectionAddress
rc-web@69:     , date = new Date;
rc-web@69: 
rc-web@69:   if (connection.remoteAddress) {
rc-web@69:     connectionAddress = {
rc-web@69:         address: connection.remoteAddress
rc-web@69:       , port: connection.remotePort
rc-web@69:     };
rc-web@69:   } else if (connection.socket && connection.socket.remoteAddress) {
rc-web@69:     connectionAddress = {
rc-web@69:         address: connection.socket.remoteAddress
rc-web@69:       , port: connection.socket.remotePort
rc-web@69:     };
rc-web@69:   }
rc-web@69: 
rc-web@69:   return {
rc-web@69:       headers: data.headers
rc-web@69:     , address: connectionAddress
rc-web@69:     , time: date.toString()
rc-web@69:     , query: data.query
rc-web@69:     , url: data.request.url
rc-web@69:     , xdomain: !!data.request.headers.origin
rc-web@69:     , secure: data.request.connection.secure
rc-web@69:     , issued: +date
rc-web@69:   };
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Verifies the origin of a request.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.verifyOrigin = function (request) {
rc-web@69:   var origin = request.headers.origin || request.headers.referer
rc-web@69:     , origins = this.get('origins');
rc-web@69: 
rc-web@69:   if (origin === 'null') origin = '*';
rc-web@69: 
rc-web@69:   if (origins.indexOf('*:*') !== -1) {
rc-web@69:     return true;
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (origin) {
rc-web@69:     try {
rc-web@69:       var parts = url.parse(origin);
rc-web@69:       parts.port = parts.port || 80;
rc-web@69:       var ok =
rc-web@69:         ~origins.indexOf(parts.hostname + ':' + parts.port) ||
rc-web@69:         ~origins.indexOf(parts.hostname + ':*') ||
rc-web@69:         ~origins.indexOf('*:' + parts.port);
rc-web@69:       if (!ok) this.log.warn('illegal origin: ' + origin);
rc-web@69:       return ok;
rc-web@69:     } catch (ex) {
rc-web@69:       this.log.warn('error parsing origin');
rc-web@69:     }
rc-web@69:   }
rc-web@69:   else {
rc-web@69:     this.log.warn('origin missing from handshake, yet required by config');
rc-web@69:   }
rc-web@69:   return false;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Handles an incoming packet.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.handlePacket = function (sessid, packet) {
rc-web@69:   this.of(packet.endpoint || '').handlePacket(sessid, packet);
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Performs authentication.
rc-web@69:  *
rc-web@69:  * @param Object client request data
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.authorize = function (data, fn) {
rc-web@69:   if (this.get('authorization')) {
rc-web@69:     var self = this;
rc-web@69: 
rc-web@69:     this.get('authorization').call(this, data, function (err, authorized) {
rc-web@69:       self.log.debug('client ' + authorized ? 'authorized' : 'unauthorized');
rc-web@69:       fn(err, authorized);
rc-web@69:     });
rc-web@69:   } else {
rc-web@69:     this.log.debug('client authorized');
rc-web@69:     fn(null, true);
rc-web@69:   }
rc-web@69: 
rc-web@69:   return this;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Retrieves the transports adviced to the user.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.transports = function (data) {
rc-web@69:   var transp = this.get('transports')
rc-web@69:     , ret = [];
rc-web@69: 
rc-web@69:   for (var i = 0, l = transp.length; i < l; i++) {
rc-web@69:     var transport = transp[i];
rc-web@69: 
rc-web@69:     if (transport) {
rc-web@69:       if (!transport.checkClient || transport.checkClient(data)) {
rc-web@69:         ret.push(transport);
rc-web@69:       }
rc-web@69:     }
rc-web@69:   }
rc-web@69: 
rc-web@69:   return ret;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Checks whether a request is a socket.io one.
rc-web@69:  *
rc-web@69:  * @return {Object} a client request data object or `false`
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: var regexp = /^\/([^\/]+)\/?([^\/]+)?\/?([^\/]+)?\/?$/
rc-web@69: 
rc-web@69: Manager.prototype.checkRequest = function (req) {
rc-web@69:   var resource = this.get('resource');
rc-web@69: 
rc-web@69:   var match;
rc-web@69:   if (typeof resource === 'string') {
rc-web@69:     match = req.url.substr(0, resource.length);
rc-web@69:     if (match !== resource) match = null;
rc-web@69:   } else {
rc-web@69:     match = resource.exec(req.url);
rc-web@69:     if (match) match = match[0];
rc-web@69:   }
rc-web@69: 
rc-web@69:   if (match) {
rc-web@69:     var uri = url.parse(req.url.substr(match.length), true)
rc-web@69:       , path = uri.pathname || ''
rc-web@69:       , pieces = path.match(regexp);
rc-web@69: 
rc-web@69:     // client request data
rc-web@69:     var data = {
rc-web@69:         query: uri.query || {}
rc-web@69:       , headers: req.headers
rc-web@69:       , request: req
rc-web@69:       , path: path
rc-web@69:     };
rc-web@69: 
rc-web@69:     if (pieces) {
rc-web@69:       data.protocol = Number(pieces[1]);
rc-web@69:       data.transport = pieces[2];
rc-web@69:       data.id = pieces[3];
rc-web@69:       data.static = !!this.static.has(path);
rc-web@69:     };
rc-web@69: 
rc-web@69:     return data;
rc-web@69:   }
rc-web@69: 
rc-web@69:   return false;
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Declares a socket namespace
rc-web@69:  *
rc-web@69:  * @api public
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.of = function (nsp) {
rc-web@69:   if (this.namespaces[nsp]) {
rc-web@69:     return this.namespaces[nsp];
rc-web@69:   }
rc-web@69: 
rc-web@69:   return this.namespaces[nsp] = new SocketNamespace(this, nsp);
rc-web@69: };
rc-web@69: 
rc-web@69: /**
rc-web@69:  * Perform garbage collection on long living objects and properties that cannot
rc-web@69:  * be removed automatically.
rc-web@69:  *
rc-web@69:  * @api private
rc-web@69:  */
rc-web@69: 
rc-web@69: Manager.prototype.garbageCollection = function () {
rc-web@69:   // clean up unused handshakes
rc-web@69:   var ids = Object.keys(this.handshaken)
rc-web@69:     , i = ids.length
rc-web@69:     , now = Date.now()
rc-web@69:     , handshake;
rc-web@69: 
rc-web@69:   while (i--) {
rc-web@69:     handshake = this.handshaken[ids[i]];
rc-web@69: 
rc-web@69:     if ('issued' in handshake && (now - handshake.issued) >= 3E4) {
rc-web@69:       this.onDisconnect(ids[i]);
rc-web@69:     }
rc-web@69:   }
rc-web@69: };