BiKing/utils/websocket.js

const getUserAgent = () => {
		// plus.navigator.getUserAgent() / 
		// #ifdef APP-PLUS
		return plus.navigator.getUserAgent()
		// #endif
		// #ifdef H5
		return navigator.userAgent
		// #endif
	}

	! function(e) {
		if ("object" == typeof exports && "undefined" != typeof module) module.exports = e();
		else if ("function" == typeof define && define.amd) define([], e);
		else {
			var f;
			"undefined" != typeof window ? f = window : "undefined" != typeof global ? f = global : "undefined" !=
				typeof self && (f = self), f.io = e()
		}
	}(function() {
		var define, module, exports;
		return (function e(t, n, r) {
				function s(o, u) {
					if (!n[o]) {
						if (!t[o]) {
							var a = typeof require == "function" && require;
							if (!u && a) return a(o, !0);
							if (i) return i(o, !0);
							throw new Error("Cannot find module '" + o + "'")
						}
						var f = n[o] = {
							exports: {}
						};
						t[o][0].call(f.exports, function(e) {
							var n = t[o][1][e];
							return s(n ? n : e)
						}, f, f.exports, e, t, n, r)
					}
					return n[o].exports
				}
				var i = typeof require == "function" && require;
				for (var o = 0; o < r.length; o++) s(r[o]);
				return s
			})({
				1: [function(_dereq_, module, exports) {

					module.exports = _dereq_('./lib/');

				}, {
					"./lib/": 2
				}],
				2: [function(_dereq_, module, exports) {

					/**
					 * Module dependencies.
					 */

					var url = _dereq_('./url');
					var parser = _dereq_('socket.io-parser');
					var Manager = _dereq_('./manager');
					var debug = _dereq_('debug')('socket.io-client');

					/**
					 * Module exports.
					 */

					module.exports = exports = lookup;

					/**
					 * Managers cache.
					 */

					var cache = exports.managers = {};

					/**
					 * Looks up an existing `Manager` for multiplexing.
					 * If the user summons:
					 *
					 *   `io('http://localhost/a');`
					 *   `io('http://localhost/b');`
					 *
					 * We reuse the existing instance based on same scheme/port/host,
					 * and we initialize sockets for each namespace.
					 *
					 * @api public
					 */

					function lookup(uri, opts) {
						if (typeof uri == 'object') {
							opts = uri;
							uri = undefined;
						}

						opts = opts || {};

						var parsed = url(uri);
						var source = parsed.source;
						var id = parsed.id;
						var io;

						if (opts.forceNew || opts['force new connection'] || false === opts.multiplex) {
							debug('ignoring socket cache for %s', source);
							io = Manager(source, opts);
						} else {
							if (!cache[id]) {
								debug('new io instance for %s', source);
								cache[id] = Manager(source, opts);
							}
							io = cache[id];
						}
						return io.socket(parsed.path);
					}

					/**
					 * Protocol version.
					 *
					 * @api public
					 */

					exports.protocol = parser.protocol;

					/**
					 * `connect`.
					 *
					 * @param {String} uri
					 * @api public
					 */

					exports.connect = lookup;

					/**
					 * Expose constructors for standalone build.
					 *
					 * @api public
					 */

					exports.Manager = _dereq_('./manager');
					exports.Socket = _dereq_('./socket');

				}, {
					"./manager": 3,
					"./socket": 5,
					"./url": 6,
					"debug": 10,
					"socket.io-parser": 44
				}],
				3: [function(_dereq_, module, exports) {

					/**
					 * Module dependencies.
					 */

					var url = _dereq_('./url');
					var eio = _dereq_('engine.io-client');
					var Socket = _dereq_('./socket');
					var Emitter = _dereq_('component-emitter');
					var parser = _dereq_('socket.io-parser');
					var on = _dereq_('./on');
					var bind = _dereq_('component-bind');
					var object = _dereq_('object-component');
					var debug = _dereq_('debug')('socket.io-client:manager');
					var indexOf = _dereq_('indexof');
					var Backoff = _dereq_('backo2');

					/**
					 * Module exports
					 */

					module.exports = Manager;

					/**
					 * `Manager` constructor.
					 *
					 * @param {String} engine instance or engine uri/opts
					 * @param {Object} options
					 * @api public
					 */

					function Manager(uri, opts) {
						if (!(this instanceof Manager)) return new Manager(uri, opts);
						if (uri && ('object' == typeof uri)) {
							opts = uri;
							uri = undefined;
						}
						opts = opts || {};
						opts.path = opts.path || '/socket.io';
						console.log('opts.path ', opts.path)
						this.nsps = {};
						this.subs = [];
						this.opts = opts;
						this.reconnection(opts.reconnection !== false);
						this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
						this.reconnectionDelay(opts.reconnectionDelay || 1000);
						this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
						this.randomizationFactor(opts.randomizationFactor || 0.5);
						this.backoff = new Backoff({
							min: this.reconnectionDelay(),
							max: this.reconnectionDelayMax(),
							jitter: this.randomizationFactor()
						});
						this.timeout(null == opts.timeout ? 20000 : opts.timeout);
						this.readyState = 'closed';
						this.uri = uri;
						this.connected = [];
						this.encoding = false;
						this.packetBuffer = [];
						this.encoder = new parser.Encoder();
						this.decoder = new parser.Decoder();
						this.autoConnect = opts.autoConnect !== false;
						if (this.autoConnect) this.open();
					}

					/**
					 * Propagate given event to sockets and emit on `this`
					 *
					 * @api private
					 */

					Manager.prototype.emitAll = function() {
						this.emit.apply(this, arguments);
						for (var nsp in this.nsps) {
							this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
						}
					};

					/**
					 * Update `socket.id` of all sockets
					 *
					 * @api private
					 */

					Manager.prototype.updateSocketIds = function() {
						for (var nsp in this.nsps) {
							this.nsps[nsp].id = this.engine.id;
						}
					};

					/**
					 * Mix in `Emitter`.
					 */

					Emitter(Manager.prototype);

					/**
					 * Sets the `reconnection` config.
					 *
					 * @param {Boolean} true/false if it should automatically reconnect
					 * @return {Manager} self or value
					 * @api public
					 */

					Manager.prototype.reconnection = function(v) {
						if (!arguments.length) return this._reconnection;
						this._reconnection = !!v;
						return this;
					};

					/**
					 * Sets the reconnection attempts config.
					 *
					 * @param {Number} max reconnection attempts before giving up
					 * @return {Manager} self or value
					 * @api public
					 */

					Manager.prototype.reconnectionAttempts = function(v) {
						if (!arguments.length) return this._reconnectionAttempts;
						this._reconnectionAttempts = v;
						return this;
					};

					/**
					 * Sets the delay between reconnections.
					 *
					 * @param {Number} delay
					 * @return {Manager} self or value
					 * @api public
					 */

					Manager.prototype.reconnectionDelay = function(v) {
						if (!arguments.length) return this._reconnectionDelay;
						this._reconnectionDelay = v;
						this.backoff && this.backoff.setMin(v);
						return this;
					};

					Manager.prototype.randomizationFactor = function(v) {
						if (!arguments.length) return this._randomizationFactor;
						this._randomizationFactor = v;
						this.backoff && this.backoff.setJitter(v);
						return this;
					};

					/**
					 * Sets the maximum delay between reconnections.
					 *
					 * @param {Number} delay
					 * @return {Manager} self or value
					 * @api public
					 */

					Manager.prototype.reconnectionDelayMax = function(v) {
						if (!arguments.length) return this._reconnectionDelayMax;
						this._reconnectionDelayMax = v;
						this.backoff && this.backoff.setMax(v);
						return this;
					};

					/**
					 * Sets the connection timeout. `false` to disable
					 *
					 * @return {Manager} self or value
					 * @api public
					 */

					Manager.prototype.timeout = function(v) {
						if (!arguments.length) return this._timeout;
						this._timeout = v;
						return this;
					};

					/**
					 * Starts trying to reconnect if reconnection is enabled and we have not
					 * started reconnecting yet
					 *
					 * @api private
					 */

					Manager.prototype.maybeReconnectOnOpen = function() {
						// Only try to reconnect if it's the first time we're connecting
						if (!this.reconnecting && this._reconnection && this.backoff.attempts ===
							0) {
							// keeps reconnection from firing twice for the same reconnection loop
							this.reconnect();
						}
					};


					/**
					 * Sets the current transport `socket`.
					 *
					 * @param {Function} optional, callback
					 * @return {Manager} self
					 * @api public
					 */

					Manager.prototype.open =
						Manager.prototype.connect = function(fn) {
							debug('readyState %s', this.readyState);
							if (~this.readyState.indexOf('open')) return this;

							debug('opening %s', this.uri);
							this.engine = eio(this.uri, this.opts);
							var socket = this.engine;
							var self = this;
							this.readyState = 'opening';
							this.skipReconnect = false;

							// emit `open`
							var openSub = on(socket, 'open', function() {
								self.onopen();
								fn && fn();
							});

							// emit `connect_error`
							var errorSub = on(socket, 'error', function(data) {
								debug('connect_error');
								self.cleanup();
								self.readyState = 'closed';
								self.emitAll('connect_error', data);
								if (fn) {
									var err = new Error('Connection error');
									err.data = data;
									fn(err);
								} else {
									// Only do this if there is no fn to handle the error
									self.maybeReconnectOnOpen();
								}
							});

							// emit `connect_timeout`
							if (false !== this._timeout) {
								var timeout = this._timeout;
								debug('connect attempt will timeout after %d', timeout);

								// set timer
								var timer = setTimeout(function() {
									debug('connect attempt timed out after %d', timeout);
									openSub.destroy();
									socket.close();
									socket.emit('error', 'timeout');
									self.emitAll('connect_timeout', timeout);
								}, timeout);

								this.subs.push({
									destroy: function() {
										clearTimeout(timer);
									}
								});
							}

							this.subs.push(openSub);
							this.subs.push(errorSub);

							return this;
						};

					/**
					 * Called upon transport open.
					 *
					 * @api private
					 */

					Manager.prototype.onopen = function() {
						debug('open');

						// clear old subs
						this.cleanup();

						// mark as open
						this.readyState = 'open';
						this.emit('open');

						// add new subs
						var socket = this.engine;
						this.subs.push(on(socket, 'data', bind(this, 'ondata')));
						this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
						this.subs.push(on(socket, 'error', bind(this, 'onerror')));
						this.subs.push(on(socket, 'close', bind(this, 'onclose')));
					};

					/**
					 * Called with data.
					 *
					 * @api private
					 */

					Manager.prototype.ondata = function(data) {
						this.decoder.add(data);
					};

					/**
					 * Called when parser fully decodes a packet.
					 *
					 * @api private
					 */

					Manager.prototype.ondecoded = function(packet) {
						this.emit('packet', packet);
					};

					/**
					 * Called upon socket error.
					 *
					 * @api private
					 */

					Manager.prototype.onerror = function(err) {
						debug('error', err);
						this.emitAll('error', err);
					};

					/**
					 * Creates a new socket for the given `nsp`.
					 *
					 * @return {Socket}
					 * @api public
					 */

					Manager.prototype.socket = function(nsp) {

						var socket = this.nsps[nsp];
						if (!socket) {
							socket = new Socket(this, nsp);
							this.nsps[nsp] = socket;
							var self = this;
							socket.on('connect', function() {
								socket.id = self.engine.id;
								if (!~indexOf(self.connected, socket)) {
									self.connected.push(socket);
								}
							});
						}
						return socket;
					};

					/**
					 * Called upon a socket close.
					 *
					 * @param {Socket} socket
					 */

					Manager.prototype.destroy = function(socket) {
						var index = indexOf(this.connected, socket);
						if (~index) this.connected.splice(index, 1);
						if (this.connected.length) return;

						this.close();
					};

					/**
					 * Writes a packet.
					 *
					 * @param {Object} packet
					 * @api private
					 */

					Manager.prototype.packet = function(packet) {
						debug('writing packet %j', packet);
						var self = this;

						if (!self.encoding) {
							// encode, then write to engine with result
							self.encoding = true;
							this.encoder.encode(packet, function(encodedPackets) {
								for (var i = 0; i < encodedPackets.length; i++) {
									self.engine.write(encodedPackets[i]);
								}
								self.encoding = false;
								self.processPacketQueue();
							});
						} else { // add packet to the queue
							self.packetBuffer.push(packet);
						}
					};

					/**
					 * If packet buffer is non-empty, begins encoding the
					 * next packet in line.
					 *
					 * @api private
					 */

					Manager.prototype.processPacketQueue = function() {
						if (this.packetBuffer.length > 0 && !this.encoding) {
							var pack = this.packetBuffer.shift();
							this.packet(pack);
						}
					};

					/**
					 * Clean up transport subscriptions and packet buffer.
					 *
					 * @api private
					 */

					Manager.prototype.cleanup = function() {
						var sub;
						while (sub = this.subs.shift()) sub.destroy();

						this.packetBuffer = [];
						this.encoding = false;

						this.decoder.destroy();
					};

					/**
					 * Close the current socket.
					 *
					 * @api private
					 */

					Manager.prototype.close =
						Manager.prototype.disconnect = function() {
							this.skipReconnect = true;
							this.backoff.reset();
							this.readyState = 'closed';
							this.engine && this.engine.close();
						};

					/**
					 * Called upon engine close.
					 *
					 * @api private
					 */

					Manager.prototype.onclose = function(reason) {
						debug('close');
						this.cleanup();
						this.backoff.reset();
						this.readyState = 'closed';
						this.emit('close', reason);
						if (this._reconnection && !this.skipReconnect) {
							this.reconnect();
						}
					};

					/**
					 * Attempt a reconnection.
					 *
					 * @api private
					 */

					Manager.prototype.reconnect = function() {
						if (this.reconnecting || this.skipReconnect) return this;

						var self = this;

						if (this.backoff.attempts >= this._reconnectionAttempts) {
							debug('reconnect failed');
							this.backoff.reset();
							this.emitAll('reconnect_failed');
							this.reconnecting = false;
						} else {
							var delay = this.backoff.duration();
							debug('will wait %dms before reconnect attempt', delay);

							this.reconnecting = true;
							var timer = setTimeout(function() {
								if (self.skipReconnect) return;

								debug('attempting reconnect');
								self.emitAll('reconnect_attempt', self.backoff.attempts);
								self.emitAll('reconnecting', self.backoff.attempts);

								// check again for the case socket closed in above events
								if (self.skipReconnect) return;

								self.open(function(err) {
									if (err) {
										debug('reconnect attempt error');
										self.reconnecting = false;
										self.reconnect();
										self.emitAll('reconnect_error', err.data);
									} else {
										debug('reconnect success');
										self.onreconnect();
									}
								});
							}, delay);

							this.subs.push({
								destroy: function() {
									clearTimeout(timer);
								}
							});
						}
					};

					/**
					 * Called upon successful reconnect.
					 *
					 * @api private
					 */

					Manager.prototype.onreconnect = function() {
						var attempt = this.backoff.attempts;
						this.reconnecting = false;
						this.backoff.reset();
						this.updateSocketIds();
						this.emitAll('reconnect', attempt);
					};

				}, {
					"./on": 4,
					"./socket": 5,
					"./url": 6,
					"backo2": 7,
					"component-bind": 8,
					"component-emitter": 9,
					"debug": 10,
					"engine.io-client": 11,
					"indexof": 40,
					"object-component": 41,
					"socket.io-parser": 44
				}],
				4: [function(_dereq_, module, exports) {

					/**
					 * Module exports.
					 */

					module.exports = on;

					/**
					 * Helper for subscriptions.
					 *
					 * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`
					 * @param {String} event name
					 * @param {Function} callback
					 * @api public
					 */

					function on(obj, ev, fn) {
						// console.log(obj, ev, fn)
						obj.on(ev, fn);
						return {
							destroy: function() {
								obj.removeListener(ev, fn);
							}
						};
					}

				}, {}],
				5: [function(_dereq_, module, exports) {

					/**
					 * Module dependencies.
					 */

					var parser = _dereq_('socket.io-parser');
					var Emitter = _dereq_('component-emitter');
					var toArray = _dereq_('to-array');
					var on = _dereq_('./on');
					var bind = _dereq_('component-bind');
					var debug = _dereq_('debug')('socket.io-client:socket');
					var hasBin = _dereq_('has-binary');

					/**
					 * Module exports.
					 */

					module.exports = exports = Socket;

					/**
					 * Internal events (blacklisted).
					 * These events can't be emitted by the user.
					 *
					 * @api private
					 */

					var events = {
						connect: 1,
						connect_error: 1,
						connect_timeout: 1,
						disconnect: 1,
						error: 1,
						reconnect: 1,
						reconnect_attempt: 1,
						reconnect_failed: 1,
						reconnect_error: 1,
						reconnecting: 1
					};

					/**
					 * Shortcut to `Emitter#emit`.
					 */

					var emit = Emitter.prototype.emit;

					/**
					 * `Socket` constructor.
					 *
					 * @api public
					 */

					function Socket(io, nsp) {
						this.io = io;
						this.nsp = nsp;
						this.json = this; // compat
						this.ids = 0;
						this.acks = {};
						if (this.io.autoConnect) this.open();
						this.receiveBuffer = [];
						this.sendBuffer = [];
						this.connected = false;
						this.disconnected = true;
					}

					/**
					 * Mix in `Emitter`.
					 */

					Emitter(Socket.prototype);

					/**
					 * Subscribe to open, close and packet events
					 *
					 * @api private
					 */

					Socket.prototype.subEvents = function() {
						if (this.subs) return;

						var io = this.io;
						this.subs = [
							on(io, 'open', bind(this, 'onopen')),
							on(io, 'packet', bind(this, 'onpacket')),
							on(io, 'close', bind(this, 'onclose'))
						];
					};

					/**
					 * "Opens" the socket.
					 *
					 * @api public
					 */

					Socket.prototype.open =
						Socket.prototype.connect = function() {
							if (this.connected) return this;

							this.subEvents();
							this.io.open(); // ensure open
							if ('open' == this.io.readyState) this.onopen();
							return this;
						};

					/**
					 * Sends a `message` event.
					 *
					 * @return {Socket} self
					 * @api public
					 */

					Socket.prototype.send = function() {
						var args = toArray(arguments);
						args.unshift('message');
						this.emit.apply(this, args);
						return this;
					};

					/**
					 * Override `emit`.
					 * If the event is in `events`, it's emitted normally.
					 *
					 * @param {String} event name
					 * @return {Socket} self
					 * @api public
					 */

					Socket.prototype.emit = function(ev) {
						if (events.hasOwnProperty(ev)) {
							emit.apply(this, arguments);
							return this;
						}

						var args = toArray(arguments);
						var parserType = parser.EVENT; // default
						if (hasBin(args)) {
							parserType = parser.BINARY_EVENT;
						} // binary
						var packet = {
							type: parserType,
							data: args
						};

						// event ack callback
						if ('function' == typeof args[args.length - 1]) {
							debug('emitting packet with ack id %d', this.ids);
							this.acks[this.ids] = args.pop();
							packet.id = this.ids++;
						}

						if (this.connected) {
							this.packet(packet);
						} else {
							this.sendBuffer.push(packet);
						}

						return this;
					};

					/**
					 * Sends a packet.
					 *
					 * @param {Object} packet
					 * @api private
					 */

					Socket.prototype.packet = function(packet) {
						packet.nsp = this.nsp;
						this.io.packet(packet);
					};

					/**
					 * Called upon engine `open`.
					 *
					 * @api private
					 */

					Socket.prototype.onopen = function() {
						debug('transport is open - connecting');

						// write connect packet if necessary
						if ('/' != this.nsp) {
							this.packet({
								type: parser.CONNECT
							});
						}
					};

					/**
					 * Called upon engine `close`.
					 *
					 * @param {String} reason
					 * @api private
					 */

					Socket.prototype.onclose = function(reason) {
						debug('close (%s)', reason);
						this.connected = false;
						this.disconnected = true;
						delete this.id;
						this.emit('disconnect', reason);
					};

					/**
					 * Called with socket packet.
					 *
					 * @param {Object} packet
					 * @api private
					 */

					Socket.prototype.onpacket = function(packet) {
						if (packet.nsp != this.nsp) return;

						switch (packet.type) {
							case parser.CONNECT:
								this.onconnect();
								break;

							case parser.EVENT:
								this.onevent(packet);
								break;

							case parser.BINARY_EVENT:
								this.onevent(packet);
								break;

							case parser.ACK:
								this.onack(packet);
								break;

							case parser.BINARY_ACK:
								this.onack(packet);
								break;

							case parser.DISCONNECT:
								this.ondisconnect();
								break;

							case parser.ERROR:
								this.emit('error', packet.data);
								break;
						}
					};

					/**
					 * Called upon a server event.
					 *
					 * @param {Object} packet
					 * @api private
					 */

					Socket.prototype.onevent = function(packet) {
						var args = packet.data || [];
						debug('emitting event %j', args);

						if (null != packet.id) {
							debug('attaching ack callback to event');
							args.push(this.ack(packet.id));
						}

						if (this.connected) {
							emit.apply(this, args);
						} else {
							this.receiveBuffer.push(args);
						}
					};

					/**
					 * Produces an ack callback to emit with an event.
					 *
					 * @api private
					 */

					Socket.prototype.ack = function(id) {
						var self = this;
						var sent = false;
						return function() {
							// prevent double callbacks
							if (sent) return;
							sent = true;
							var args = toArray(arguments);
							debug('sending ack %j', args);

							var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;
							self.packet({
								type: type,
								id: id,
								data: args
							});
						};
					};

					/**
					 * Called upon a server acknowlegement.
					 *
					 * @param {Object} packet
					 * @api private
					 */

					Socket.prototype.onack = function(packet) {
						debug('calling ack %s with %j', packet.id, packet.data);
						var fn = this.acks[packet.id];
						fn.apply(this, packet.data);
						delete this.acks[packet.id];
					};

					/**
					 * Called upon server connect.
					 *
					 * @api private
					 */

					Socket.prototype.onconnect = function() {
						this.connected = true;
						this.disconnected = false;
						this.emit('connect');
						this.emitBuffered();
					};

					/**
					 * Emit buffered events (received and emitted).
					 *
					 * @api private
					 */

					Socket.prototype.emitBuffered = function() {
						var i;
						for (i = 0; i < this.receiveBuffer.length; i++) {
							emit.apply(this, this.receiveBuffer[i]);
						}
						this.receiveBuffer = [];

						for (i = 0; i < this.sendBuffer.length; i++) {
							this.packet(this.sendBuffer[i]);
						}
						this.sendBuffer = [];
					};

					/**
					 * Called upon server disconnect.
					 *
					 * @api private
					 */

					Socket.prototype.ondisconnect = function() {
						debug('server disconnect (%s)', this.nsp);
						this.destroy();
						this.onclose('io server disconnect');
					};

					/**
					 * Called upon forced client/server side disconnections,
					 * this method ensures the manager stops tracking us and
					 * that reconnections don't get triggered for this.
					 *
					 * @api private.
					 */

					Socket.prototype.destroy = function() {
						if (this.subs) {
							// clean subscriptions to avoid reconnections
							for (var i = 0; i < this.subs.length; i++) {
								this.subs[i].destroy();
							}
							this.subs = null;
						}

						this.io.destroy(this);
					};

					/**
					 * Disconnects the socket manually.
					 *
					 * @return {Socket} self
					 * @api public
					 */

					Socket.prototype.close =
						Socket.prototype.disconnect = function() {
							if (this.connected) {
								debug('performing disconnect (%s)', this.nsp);
								this.packet({
									type: parser.DISCONNECT
								});
							}

							// remove socket from pool
							this.destroy();

							if (this.connected) {
								// fire events
								this.onclose('io client disconnect');
							}
							return this;
						};

				}, {
					"./on": 4,
					"component-bind": 8,
					"component-emitter": 9,
					"debug": 10,
					"has-binary": 36,
					"socket.io-parser": 44,
					"to-array": 48
				}],
				6: [function(_dereq_, module, exports) {
					(function(global) {

						/**
						 * Module dependencies.
						 */

						var parseuri = _dereq_('parseuri');
						var debug = _dereq_('debug')('socket.io-client:url');

						/**
						 * Module exports.
						 */

						module.exports = url;

						/**
						 * URL parser.
						 *
						 * @param {String} url
						 * @param {Object} An object meant to mimic window.location.
						 *                 Defaults to window.location.
						 * @api public
						 */

						function url(uri, loc) {
							var obj = uri;

							// default to window.location
							var loc = loc || global.location;
							if (null == uri) uri = loc.protocol + '//' + loc.host;

							// relative path support
							if ('string' == typeof uri) {
								if ('/' == uri.charAt(0)) {
									if ('/' == uri.charAt(1)) {
										uri = loc.protocol + uri;
									} else {
										uri = loc.hostname + uri;
									}
								}

								if (!/^(https?|wss?):\/\//.test(uri)) {
									debug('protocol-less url %s', uri);
									if ('undefined' != typeof loc) {
										uri = loc.protocol + '//' + uri;
									} else {
										uri = 'https://' + uri;
									}
								}

								// parse
								debug('parse %s', uri);
								obj = parseuri(uri);
							}

							// make sure we treat `localhost:80` and `localhost` equally
							if (!obj.port) {
								if (/^(http|ws)$/.test(obj.protocol)) {
									obj.port = '80';
								} else if (/^(http|ws)s$/.test(obj.protocol)) {
									obj.port = '443';
								}
							}

							obj.path = obj.path || '/';
							// define unique id
							obj.id = obj.protocol + '://' + obj.host + ':' + obj.port;
							// define href
							obj.href = obj.protocol + '://' + obj.host + (loc && loc.port == obj
								.port ? '' : (':' + obj.port));

							return obj;
						}

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"debug": 10,
					"parseuri": 42
				}],
				7: [function(_dereq_, module, exports) {

					/**
					 * Expose `Backoff`.
					 */

					module.exports = Backoff;

					/**
					 * Initialize backoff timer with `opts`.
					 *
					 * - `min` initial timeout in milliseconds [100]
					 * - `max` max timeout [10000]
					 * - `jitter` [0]
					 * - `factor` [2]
					 *
					 * @param {Object} opts
					 * @api public
					 */

					function Backoff(opts) {
						opts = opts || {};
						this.ms = opts.min || 100;
						this.max = opts.max || 10000;
						this.factor = opts.factor || 2;
						this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
						this.attempts = 0;
					}

					/**
					 * Return the backoff duration.
					 *
					 * @return {Number}
					 * @api public
					 */

					Backoff.prototype.duration = function() {
						var ms = this.ms * Math.pow(this.factor, this.attempts++);
						if (this.jitter) {
							var rand = Math.random();
							var deviation = Math.floor(rand * this.jitter * ms);
							ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;
						}
						return Math.min(ms, this.max) | 0;
					};

					/**
					 * Reset the number of attempts.
					 *
					 * @api public
					 */

					Backoff.prototype.reset = function() {
						this.attempts = 0;
					};

					/**
					 * Set the minimum duration
					 *
					 * @api public
					 */

					Backoff.prototype.setMin = function(min) {
						this.ms = min;
					};

					/**
					 * Set the maximum duration
					 *
					 * @api public
					 */

					Backoff.prototype.setMax = function(max) {
						this.max = max;
					};

					/**
					 * Set the jitter
					 *
					 * @api public
					 */

					Backoff.prototype.setJitter = function(jitter) {
						this.jitter = jitter;
					};


				}, {}],
				8: [function(_dereq_, module, exports) {
					/**
					 * Slice reference.
					 */

					var slice = [].slice;

					/**
					 * Bind `obj` to `fn`.
					 *
					 * @param {Object} obj
					 * @param {Function|String} fn or string
					 * @return {Function}
					 * @api public
					 */

					module.exports = function(obj, fn) {
						if ('string' == typeof fn) fn = obj[fn];
						if ('function' != typeof fn) throw new Error('bind() requires a function');
						var args = slice.call(arguments, 2);
						return function() {
							return fn.apply(obj, args.concat(slice.call(arguments)));
						}
					};

				}, {}],
				9: [function(_dereq_, module, exports) {

					/**
					 * Expose `Emitter`.
					 */

					module.exports = Emitter;

					/**
					 * Initialize a new `Emitter`.
					 *
					 * @api public
					 */

					function Emitter(obj) {
						if (obj) return mixin(obj);
					};

					/**
					 * Mixin the emitter properties.
					 *
					 * @param {Object} obj
					 * @return {Object}
					 * @api private
					 */

					function mixin(obj) {
						for (var key in Emitter.prototype) {
							obj[key] = Emitter.prototype[key];
						}
						return obj;
					}

					/**
					 * Listen on the given `event` with `fn`.
					 *
					 * @param {String} event
					 * @param {Function} fn
					 * @return {Emitter}
					 * @api public
					 */

					Emitter.prototype.on =
						Emitter.prototype.addEventListener = function(event, fn) {
							this._callbacks = this._callbacks || {};
							(this._callbacks[event] = this._callbacks[event] || [])
							.push(fn);
							return this;
						};

					/**
					 * Adds an `event` listener that will be invoked a single
					 * time then automatically removed.
					 *
					 * @param {String} event
					 * @param {Function} fn
					 * @return {Emitter}
					 * @api public
					 */

					Emitter.prototype.once = function(event, fn) {
						var self = this;
						this._callbacks = this._callbacks || {};

						function on() {
							self.off(event, on);
							fn.apply(this, arguments);
						}

						on.fn = fn;
						this.on(event, on);
						return this;
					};

					/**
					 * Remove the given callback for `event` or all
					 * registered callbacks.
					 *
					 * @param {String} event
					 * @param {Function} fn
					 * @return {Emitter}
					 * @api public
					 */

					Emitter.prototype.off =
						Emitter.prototype.removeListener =
						Emitter.prototype.removeAllListeners =
						Emitter.prototype.removeEventListener = function(event, fn) {
							this._callbacks = this._callbacks || {};

							// all
							if (0 == arguments.length) {
								this._callbacks = {};
								return this;
							}

							// specific event
							var callbacks = this._callbacks[event];
							if (!callbacks) return this;

							// remove all handlers
							if (1 == arguments.length) {
								delete this._callbacks[event];
								return this;
							}

							// remove specific handler
							var cb;
							for (var i = 0; i < callbacks.length; i++) {
								cb = callbacks[i];
								if (cb === fn || cb.fn === fn) {
									callbacks.splice(i, 1);
									break;
								}
							}
							return this;
						};

					/**
					 * Emit `event` with the given args.
					 *
					 * @param {String} event
					 * @param {Mixed} ...
					 * @return {Emitter}
					 */

					Emitter.prototype.emit = function(event) {
						this._callbacks = this._callbacks || {};
						var args = [].slice.call(arguments, 1),
							callbacks = this._callbacks[event];

						if (callbacks) {
							callbacks = callbacks.slice(0);
							for (var i = 0, len = callbacks.length; i < len; ++i) {
								callbacks[i].apply(this, args);
							}
						}

						return this;
					};

					/**
					 * Return array of callbacks for `event`.
					 *
					 * @param {String} event
					 * @return {Array}
					 * @api public
					 */

					Emitter.prototype.listeners = function(event) {
						this._callbacks = this._callbacks || {};
						return this._callbacks[event] || [];
					};

					/**
					 * Check if this emitter has `event` handlers.
					 *
					 * @param {String} event
					 * @return {Boolean}
					 * @api public
					 */

					Emitter.prototype.hasListeners = function(event) {
						return !!this.listeners(event).length;
					};

				}, {}],
				10: [function(_dereq_, module, exports) {

					/**
					 * Expose `debug()` as the module.
					 */

					module.exports = debug;

					/**
					 * Create a debugger with the given `name`.
					 *
					 * @param {String} name
					 * @return {Type}
					 * @api public
					 */

					function debug(name) {
						if (!debug.enabled(name)) return function() {};

						return function(fmt) {
							fmt = coerce(fmt);

							var curr = new Date;
							var ms = curr - (debug[name] || curr);
							debug[name] = curr;

							fmt = name +
								' ' +
								fmt +
								' +' + debug.humanize(ms);

							// This hackery is required for IE8
							// where `console.log` doesn't have 'apply'
							window.console &&
								console.log &&
								Function.prototype.apply.call(console.log, console, arguments);
						}
					}

					/**
					 * The currently active debug mode names.
					 */

					debug.names = [];
					debug.skips = [];

					/**
					 * Enables a debug mode by name. This can include modes
					 * separated by a colon and wildcards.
					 *
					 * @param {String} name
					 * @api public
					 */

					debug.enable = function(name) {
						try {
							localStorage.debug = name;
						} catch (e) {}

						var split = (name || '').split(/[\s,]+/),
							len = split.length;

						for (var i = 0; i < len; i++) {
							name = split[i].replace('*', '.*?');
							if (name[0] === '-') {
								debug.skips.push(new RegExp('^' + name.substr(1) + '$'));
							} else {
								debug.names.push(new RegExp('^' + name + '$'));
							}
						}
					};

					/**
					 * Disable debug output.
					 *
					 * @api public
					 */

					debug.disable = function() {
						debug.enable('');
					};

					/**
					 * Humanize the given `ms`.
					 *
					 * @param {Number} m
					 * @return {String}
					 * @api private
					 */

					debug.humanize = function(ms) {
						var sec = 1000,
							min = 60 * 1000,
							hour = 60 * min;

						if (ms >= hour) return (ms / hour).toFixed(1) + 'h';
						if (ms >= min) return (ms / min).toFixed(1) + 'm';
						if (ms >= sec) return (ms / sec | 0) + 's';
						return ms + 'ms';
					};

					/**
					 * Returns true if the given mode name is enabled, false otherwise.
					 *
					 * @param {String} name
					 * @return {Boolean}
					 * @api public
					 */

					debug.enabled = function(name) {
						for (var i = 0, len = debug.skips.length; i < len; i++) {
							if (debug.skips[i].test(name)) {
								return false;
							}
						}
						for (var i = 0, len = debug.names.length; i < len; i++) {
							if (debug.names[i].test(name)) {
								return true;
							}
						}
						return false;
					};

					/**
					 * Coerce `val`.
					 */

					function coerce(val) {
						if (val instanceof Error) return val.stack || val.message;
						return val;
					}

					// persist

					try {
						if (window.localStorage) debug.enable(localStorage.debug);
					} catch (e) {}

				}, {}],
				11: [function(_dereq_, module, exports) {

					module.exports = _dereq_('./lib/');

				}, {
					"./lib/": 12
				}],
				12: [function(_dereq_, module, exports) {

					module.exports = _dereq_('./socket');

					/**
					 * Exports parser
					 *
					 * @api public
					 *
					 */
					module.exports.parser = _dereq_('engine.io-parser');

				}, {
					"./socket": 13,
					"engine.io-parser": 25
				}],
				13: [function(_dereq_, module, exports) {
					(function(global) {
						/**
						 * Module dependencies.
						 */

						var transports = _dereq_('./transports');
						var Emitter = _dereq_('component-emitter');
						var debug = _dereq_('debug')('engine.io-client:socket');
						var index = _dereq_('indexof');
						var parser = _dereq_('engine.io-parser');
						var parseuri = _dereq_('parseuri');
						var parsejson = _dereq_('parsejson');
						var parseqs = _dereq_('parseqs');

						/**
						 * Module exports.
						 */

						module.exports = Socket;

						/**
						 * Noop function.
						 *
						 * @api private
						 */

						function noop() {}

						/**
						 * Socket constructor.
						 *
						 * @param {String|Object} uri or options
						 * @param {Object} options
						 * @api public
						 */

						function Socket(uri, opts) {
							if (!(this instanceof Socket)) return new Socket(uri, opts);

							opts = opts || {};

							if (uri && 'object' == typeof uri) {
								opts = uri;
								uri = null;
							}

							if (uri) {
								uri = parseuri(uri);
								opts.host = uri.host;
								opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
								opts.port = uri.port;
								if (uri.query) opts.query = uri.query;
							}

							this.secure = null != opts.secure ? opts.secure :
								(global.location && 'https:' == location.protocol);

							if (opts.host) {
								var pieces = opts.host.split(':');
								opts.hostname = pieces.shift();
								if (pieces.length) {
									opts.port = pieces.pop();
								} else if (!opts.port) {
									// if no port is specified manually, use the protocol default
									opts.port = this.secure ? '443' : '80';
								}
							}

							this.agent = opts.agent || false;
							this.hostname = opts.hostname ||
								(global.location ? location.hostname : 'localhost');
							this.port = opts.port || (global.location && location.port ?
								location.port :
								(this.secure ? 443 : 80));
							this.query = opts.query || {};
							if ('string' == typeof this.query) this.query = parseqs.decode(this
								.query);
							this.upgrade = false !== opts.upgrade;
							this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
							this.forceJSONP = !!opts.forceJSONP;
							this.jsonp = false !== opts.jsonp;
							this.forceBase64 = !!opts.forceBase64;
							this.enablesXDR = !!opts.enablesXDR;
							this.timestampParam = opts.timestampParam || 't';
							this.timestampRequests = opts.timestampRequests;
							this.transports = opts.transports || ['polling', 'websocket'];
							this.readyState = '';
							this.writeBuffer = [];
							this.callbackBuffer = [];
							this.policyPort = opts.policyPort || 843;
							this.rememberUpgrade = opts.rememberUpgrade || false;
							this.binaryType = null;
							this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;

							// SSL options for Node.js client
							this.pfx = opts.pfx || null;
							this.key = opts.key || null;
							this.passphrase = opts.passphrase || null;
							this.cert = opts.cert || null;
							this.ca = opts.ca || null;
							this.ciphers = opts.ciphers || null;
							this.rejectUnauthorized = opts.rejectUnauthorized || null;

							this.open();
						}

						Socket.priorWebsocketSuccess = false;

						/**
						 * Mix in `Emitter`.
						 */

						Emitter(Socket.prototype);

						/**
						 * Protocol version.
						 *
						 * @api public
						 */

						Socket.protocol = parser.protocol; // this is an int

						/**
						 * Expose deps for legacy compatibility
						 * and standalone browser access.
						 */

						Socket.Socket = Socket;
						Socket.Transport = _dereq_('./transport');
						Socket.transports = _dereq_('./transports');
						Socket.parser = _dereq_('engine.io-parser');

						/**
						 * Creates transport of the given type.
						 *
						 * @param {String} transport name
						 * @return {Transport}
						 * @api private
						 */

						Socket.prototype.createTransport = function(name) {
							debug('creating transport "%s"', name);
							var query = clone(this.query);

							// append engine.io protocol identifier
							query.EIO = parser.protocol;

							// transport name
							query.transport = name;

							// session id if we already have one
							if (this.id) query.sid = this.id;

							var transport = new transports[name]({
								agent: this.agent,
								hostname: this.hostname,
								port: this.port,
								secure: this.secure,
								path: this.path,
								query: query,
								forceJSONP: this.forceJSONP,
								jsonp: this.jsonp,
								forceBase64: this.forceBase64,
								enablesXDR: this.enablesXDR,
								timestampRequests: this.timestampRequests,
								timestampParam: this.timestampParam,
								policyPort: this.policyPort,
								socket: this,
								pfx: this.pfx,
								key: this.key,
								passphrase: this.passphrase,
								cert: this.cert,
								ca: this.ca,
								ciphers: this.ciphers,
								rejectUnauthorized: this.rejectUnauthorized
							});

							return transport;
						};

						function clone(obj) {
							var o = {};
							for (var i in obj) {
								if (obj.hasOwnProperty(i)) {
									o[i] = obj[i];
								}
							}
							return o;
						}

						/**
						 * Initializes transport to use and starts probe.
						 *
						 * @api private
						 */
						Socket.prototype.open = function() {
							var transport;
							if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this
								.transports.indexOf('websocket') != -1) {
								transport = 'websocket';
							} else if (0 == this.transports.length) {
								// Emit error on next tick so it can be listened to
								var self = this;
								setTimeout(function() {
									self.emit('error', 'No transports available');
								}, 0);
								return;
							} else {
								transport = this.transports[0];
							}
							this.readyState = 'opening';

							// Retry with the next transport if the transport is disabled (jsonp: false)
							var transport;
							try {
								transport = this.createTransport(transport);
							} catch (e) {
								this.transports.shift();
								this.open();
								return;
							}

							transport.open();
							this.setTransport(transport);
						};

						/**
						 * Sets the current transport. Disables the existing one (if any).
						 *
						 * @api private
						 */

						Socket.prototype.setTransport = function(transport) {
							debug('setting transport %s', transport.name);
							var self = this;

							if (this.transport) {
								debug('clearing existing transport %s', this.transport.name);
								this.transport.removeAllListeners();
							}

							// set up transport
							this.transport = transport;

							// set up transport listeners
							transport
								.on('drain', function() {
									self.onDrain();
								})
								.on('packet', function(packet) {
									self.onPacket(packet);
								})
								.on('error', function(e) {
									self.onError(e);
								})
								.on('close', function() {
									self.onClose('transport close');
								});
						};

						/**
						 * Probes a transport.
						 *
						 * @param {String} transport name
						 * @api private
						 */

						Socket.prototype.probe = function(name) {
							debug('probing transport "%s"', name);
							var transport = this.createTransport(name, {
									probe: 1
								}),
								failed = false,
								self = this;

							Socket.priorWebsocketSuccess = false;

							function onTransportOpen() {
								if (self.onlyBinaryUpgrades) {
									var upgradeLosesBinary = !this.supportsBinary && self
										.transport.supportsBinary;
									failed = failed || upgradeLosesBinary;
								}
								if (failed) return;

								debug('probe transport "%s" opened', name);
								transport.send([{
									type: 'ping',
									data: 'probe'
								}]);
								transport.once('packet', function(msg) {
									if (failed) return;
									if ('pong' == msg.type && 'probe' == msg.data) {
										debug('probe transport "%s" pong', name);
										self.upgrading = true;
										self.emit('upgrading', transport);
										if (!transport) return;
										Socket.priorWebsocketSuccess = 'websocket' ==
											transport.name;

										debug('pausing current transport "%s"', self
											.transport.name);
										self.transport.pause(function() {
											if (failed) return;
											if ('closed' == self.readyState)
												return;
											debug(
												'changing transport and sending upgrade packet'
												);

											cleanup();

											self.setTransport(transport);
											transport.send([{
												type: 'upgrade'
											}]);
											self.emit('upgrade', transport);
											transport = null;
											self.upgrading = false;
											self.flush();
										});
									} else {
										debug('probe transport "%s" failed', name);
										var err = new Error('probe error');
										err.transport = transport.name;
										self.emit('upgradeError', err);
									}
								});
							}

							function freezeTransport() {
								if (failed) return;

								// Any callback called by transport should be ignored since now
								failed = true;

								cleanup();

								transport.close();
								transport = null;
							}

							//Handle any error that happens while probing
							function onerror(err) {
								var error = new Error('probe error: ' + err);
								error.transport = transport.name;

								freezeTransport();

								debug('probe transport "%s" failed because of error: %s', name,
									err);

								self.emit('upgradeError', error);
							}

							function onTransportClose() {
								onerror("transport closed");
							}

							//When the socket is closed while we're probing
							function onclose() {
								onerror("socket closed");
							}

							//When the socket is upgraded while we're probing
							function onupgrade(to) {
								if (transport && to.name != transport.name) {
									debug('"%s" works - aborting "%s"', to.name, transport
										.name);
									freezeTransport();
								}
							}

							//Remove all listeners on the transport and on self
							function cleanup() {
								transport.removeListener('open', onTransportOpen);
								transport.removeListener('error', onerror);
								transport.removeListener('close', onTransportClose);
								self.removeListener('close', onclose);
								self.removeListener('upgrading', onupgrade);
							}

							transport.once('open', onTransportOpen);
							transport.once('error', onerror);
							transport.once('close', onTransportClose);

							this.once('close', onclose);
							this.once('upgrading', onupgrade);

							transport.open();

						};

						/**
						 * Called when connection is deemed open.
						 *
						 * @api public
						 */

						Socket.prototype.onOpen = function() {
							console.log('111')
							debug('socket open');
							this.readyState = 'open';
							Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;
							this.emit('open');
							this.flush();

							// we check for `readyState` in case an `open`
							// listener already closed the socket
							if ('open' == this.readyState && this.upgrade && this.transport
								.pause) {
								debug('starting upgrade probes');
								for (var i = 0, l = this.upgrades.length; i < l; i++) {
									this.probe(this.upgrades[i]);
								}
							}
						};

						/**
						 * Handles a packet.
						 *
						 * @api private
						 */

						Socket.prototype.onPacket = function(packet) {
							if ('opening' == this.readyState || 'open' == this.readyState) {
								debug('socket receive: type "%s", data "%s"', packet.type,
									packet.data);

								this.emit('packet', packet);

								// Socket is live - any packet counts
								this.emit('heartbeat');

								switch (packet.type) {
									case 'open':
										this.onHandshake(parsejson(packet.data));
										break;

									case 'pong':
										this.setPing();
										break;

									case 'error':
										var err = new Error('server error');
										err.code = packet.data;
										this.emit('error', err);
										break;

									case 'message':
										this.emit('data', packet.data);
										this.emit('message', packet.data);
										break;
								}
							} else {
								debug('packet received with socket readyState "%s"', this
									.readyState);
							}
						};

						/**
						 * Called upon handshake completion.
						 *
						 * @param {Object} handshake obj
						 * @api private
						 */

						Socket.prototype.onHandshake = function(data) {
							this.emit('handshake', data);
							this.id = data.sid;
							this.transport.query.sid = data.sid;
							this.upgrades = this.filterUpgrades(data.upgrades);
							this.pingInterval = data.pingInterval;
							this.pingTimeout = data.pingTimeout;
							this.onOpen();
							// In case open handler closes socket
							if ('closed' == this.readyState) return;
							this.setPing();

							// Prolong liveness of socket on heartbeat
							this.removeListener('heartbeat', this.onHeartbeat);
							this.on('heartbeat', this.onHeartbeat);
						};

						/**
						 * Resets ping timeout.
						 *
						 * @api private
						 */

						Socket.prototype.onHeartbeat = function(timeout) {
							clearTimeout(this.pingTimeoutTimer);
							var self = this;
							self.pingTimeoutTimer = setTimeout(function() {
								if ('closed' == self.readyState) return;
								self.onClose('ping timeout');
							}, timeout || (self.pingInterval + self.pingTimeout));
						};

						/**
						 * Pings server every `this.pingInterval` and expects response
						 * within `this.pingTimeout` or closes connection.
						 *
						 * @api private
						 */

						Socket.prototype.setPing = function() {
							var self = this;
							clearTimeout(self.pingIntervalTimer);
							self.pingIntervalTimer = setTimeout(function() {
								debug('writing ping packet - expecting pong within %sms',
									self.pingTimeout);
								self.ping();
								self.onHeartbeat(self.pingTimeout);
							}, self.pingInterval);
						};

						/**
						 * Sends a ping packet.
						 *
						 * @api public
						 */

						Socket.prototype.ping = function() {
							this.sendPacket('ping');
						};

						/**
						 * Called on `drain` event
						 *
						 * @api private
						 */

						Socket.prototype.onDrain = function() {
							for (var i = 0; i < this.prevBufferLen; i++) {
								if (this.callbackBuffer[i]) {
									this.callbackBuffer[i]();
								}
							}

							this.writeBuffer.splice(0, this.prevBufferLen);
							this.callbackBuffer.splice(0, this.prevBufferLen);

							// setting prevBufferLen = 0 is very important
							// for example, when upgrading, upgrade packet is sent over,
							// and a nonzero prevBufferLen could cause problems on `drain`
							this.prevBufferLen = 0;

							if (this.writeBuffer.length == 0) {
								this.emit('drain');
							} else {
								this.flush();
							}
						};

						/**
						 * Flush write buffers.
						 *
						 * @api private
						 */

						Socket.prototype.flush = function() {
							if ('closed' != this.readyState && this.transport.writable &&
								!this.upgrading && this.writeBuffer.length) {
								debug('flushing %d packets in socket', this.writeBuffer.length);
								this.transport.send(this.writeBuffer);
								// keep track of current length of writeBuffer
								// splice writeBuffer and callbackBuffer on `drain`
								this.prevBufferLen = this.writeBuffer.length;
								this.emit('flush');
							}
						};

						/**
						 * Sends a message.
						 *
						 * @param {String} message.
						 * @param {Function} callback function.
						 * @return {Socket} for chaining.
						 * @api public
						 */

						Socket.prototype.write =
							Socket.prototype.send = function(msg, fn) {
								this.sendPacket('message', msg, fn);
								return this;
							};

						/**
						 * Sends a packet.
						 *
						 * @param {String} packet type.
						 * @param {String} data.
						 * @param {Function} callback function.
						 * @api private
						 */

						Socket.prototype.sendPacket = function(type, data, fn) {
							if ('closing' == this.readyState || 'closed' == this.readyState) {
								return;
							}

							var packet = {
								type: type,
								data: data
							};
							this.emit('packetCreate', packet);
							this.writeBuffer.push(packet);
							this.callbackBuffer.push(fn);
							this.flush();
						};

						/**
						 * Closes the connection.
						 *
						 * @api private
						 */

						Socket.prototype.close = function() {
							if ('opening' == this.readyState || 'open' == this.readyState) {
								this.readyState = 'closing';

								var self = this;

								function close() {
									self.onClose('forced close');
									debug('socket closing - telling transport to close');
									self.transport.close();
								}

								function cleanupAndClose() {
									self.removeListener('upgrade', cleanupAndClose);
									self.removeListener('upgradeError', cleanupAndClose);
									close();
								}

								function waitForUpgrade() {
									// wait for upgrade to finish since we can't send packets while pausing a transport
									self.once('upgrade', cleanupAndClose);
									self.once('upgradeError', cleanupAndClose);
								}

								if (this.writeBuffer.length) {
									this.once('drain', function() {
										if (this.upgrading) {
											waitForUpgrade();
										} else {
											close();
										}
									});
								} else if (this.upgrading) {
									waitForUpgrade();
								} else {
									close();
								}
							}

							return this;
						};

						/**
						 * Called upon transport error
						 *
						 * @api private
						 */

						Socket.prototype.onError = function(err) {
							debug('socket error %j', err);
							Socket.priorWebsocketSuccess = false;
							this.emit('error', err);
							this.onClose('transport error', err);
						};

						/**
						 * Called upon transport close.
						 *
						 * @api private
						 */

						Socket.prototype.onClose = function(reason, desc) {
							if ('opening' == this.readyState || 'open' == this.readyState ||
								'closing' == this.readyState) {
								debug('socket close with reason: "%s"', reason);
								var self = this;

								// clear timers
								clearTimeout(this.pingIntervalTimer);
								clearTimeout(this.pingTimeoutTimer);

								// clean buffers in next tick, so developers can still
								// grab the buffers on `close` event
								setTimeout(function() {
									self.writeBuffer = [];
									self.callbackBuffer = [];
									self.prevBufferLen = 0;
								}, 0);

								// stop event from firing again for transport
								this.transport.removeAllListeners('close');

								// ensure transport won't stay open
								this.transport.close();

								// ignore further transport communication
								this.transport.removeAllListeners();

								// set ready state
								this.readyState = 'closed';

								// clear session id
								this.id = null;

								// emit close event
								this.emit('close', reason, desc);
							}
						};

						/**
						 * Filters upgrades, returning only those matching client transports.
						 *
						 * @param {Array} server upgrades
						 * @api private
						 *
						 */

						Socket.prototype.filterUpgrades = function(upgrades) {
							var filteredUpgrades = [];
							for (var i = 0, j = upgrades.length; i < j; i++) {
								if (~index(this.transports, upgrades[i])) filteredUpgrades.push(
									upgrades[i]);
							}
							return filteredUpgrades;
						};

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"./transport": 14,
					"./transports": 15,
					"component-emitter": 9,
					"debug": 22,
					"engine.io-parser": 25,
					"indexof": 40,
					"parsejson": 32,
					"parseqs": 33,
					"parseuri": 34
				}],
				14: [function(_dereq_, module, exports) {
					/**
					 * Module dependencies.
					 */

					var parser = _dereq_('engine.io-parser');
					var Emitter = _dereq_('component-emitter');

					/**
					 * Module exports.
					 */

					module.exports = Transport;

					/**
					 * Transport abstract constructor.
					 *
					 * @param {Object} options.
					 * @api private
					 */

					function Transport(opts) {
						this.path = opts.path;
						this.hostname = opts.hostname;
						this.port = opts.port;
						this.secure = opts.secure;
						this.query = opts.query;
						this.timestampParam = opts.timestampParam;
						this.timestampRequests = opts.timestampRequests;
						this.readyState = '';
						this.agent = opts.agent || false;
						this.socket = opts.socket;
						this.enablesXDR = opts.enablesXDR;

						// SSL options for Node.js client
						this.pfx = opts.pfx;
						this.key = opts.key;
						this.passphrase = opts.passphrase;
						this.cert = opts.cert;
						this.ca = opts.ca;
						this.ciphers = opts.ciphers;
						this.rejectUnauthorized = opts.rejectUnauthorized;
					}

					/**
					 * Mix in `Emitter`.
					 */

					Emitter(Transport.prototype);

					/**
					 * A counter used to prevent collisions in the timestamps used
					 * for cache busting.
					 */

					Transport.timestamps = 0;

					/**
					 * Emits an error.
					 *
					 * @param {String} str
					 * @return {Transport} for chaining
					 * @api public
					 */

					Transport.prototype.onError = function(msg, desc) {
						var err = new Error(msg);
						err.type = 'TransportError';
						err.description = desc;
						this.emit('error', err);
						return this;
					};

					/**
					 * Opens the transport.
					 *
					 * @api public
					 */

					Transport.prototype.open = function() {
						if ('closed' == this.readyState || '' == this.readyState) {
							this.readyState = 'opening';
							this.doOpen();
						}

						return this;
					};

					/**
					 * Closes the transport.
					 *
					 * @api private
					 */

					Transport.prototype.close = function() {
						if ('opening' == this.readyState || 'open' == this.readyState) {
							this.doClose();
							this.onClose();
						}

						return this;
					};

					/**
					 * Sends multiple packets.
					 *
					 * @param {Array} packets
					 * @api private
					 */

					Transport.prototype.send = function(packets) {
						if ('open' == this.readyState) {
							this.write(packets);
						} else {
							throw new Error('Transport not open');
						}
					};

					/**
					 * Called upon open
					 *
					 * @api private
					 */

					Transport.prototype.onOpen = function() {
						this.readyState = 'open';
						this.writable = true;
						this.emit('open');
					};

					/**
					 * Called with data.
					 *
					 * @param {String} data
					 * @api private
					 */

					Transport.prototype.onData = function(data) {
						var packet = parser.decodePacket(data, this.socket.binaryType);
						this.onPacket(packet);
					};

					/**
					 * Called with a decoded packet.
					 */

					Transport.prototype.onPacket = function(packet) {
						this.emit('packet', packet);
					};

					/**
					 * Called upon close.
					 *
					 * @api private
					 */

					Transport.prototype.onClose = function() {
						this.readyState = 'closed';
						this.emit('close');
					};

				}, {
					"component-emitter": 9,
					"engine.io-parser": 25
				}],
				15: [function(_dereq_, module, exports) {
					(function(global) {
						/**
						 * Module dependencies
						 */

						var XMLHttpRequest = _dereq_('xmlhttprequest');
						var XHR = _dereq_('./polling-xhr');
						var JSONP = _dereq_('./polling-jsonp');
						var websocket = _dereq_('./websocket');

						/**
						 * Export transports.
						 */

						exports.polling = polling;
						exports.websocket = websocket;

						/**
						 * Polling transport polymorphic constructor.
						 * Decides on xhr vs jsonp based on feature detection.
						 *
						 * @api private
						 */

						function polling(opts) {
							var xhr;
							var xd = false;
							var xs = false;
							var jsonp = false !== opts.jsonp;

							if (global.location) {
								var isSSL = 'https:' == location.protocol;
								var port = location.port;

								// some user agents have empty `location.port`
								if (!port) {
									port = isSSL ? 443 : 80;
								}

								xd = opts.hostname != location.hostname || port != opts.port;
								xs = opts.secure != isSSL;
							}

							opts.xdomain = xd;
							opts.xscheme = xs;
							xhr = new XMLHttpRequest(opts);

							if ('open' in xhr && !opts.forceJSONP) {
								return new XHR(opts);
							} else {
								if (!jsonp) throw new Error('JSONP disabled');
								return new JSONP(opts);
							}
						}

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"./polling-jsonp": 16,
					"./polling-xhr": 17,
					"./websocket": 19,
					"xmlhttprequest": 20
				}],
				16: [function(_dereq_, module, exports) {
					(function(global) {

						/**
						 * Module requirements.
						 */

						var Polling = _dereq_('./polling');
						var inherit = _dereq_('component-inherit');

						/**
						 * Module exports.
						 */

						module.exports = JSONPPolling;

						/**
						 * Cached regular expressions.
						 */

						var rNewline = /\n/g;
						var rEscapedNewline = /\\n/g;

						/**
						 * Global JSONP callbacks.
						 */

						var callbacks;

						/**
						 * Callbacks count.
						 */

						var index = 0;

						/**
						 * Noop.
						 */

						function empty() {}

						/**
						 * JSONP Polling constructor.
						 *
						 * @param {Object} opts.
						 * @api public
						 */

						function JSONPPolling(opts) {
							Polling.call(this, opts);

							this.query = this.query || {};

							// define global callbacks array if not present
							// we do this here (lazily) to avoid unneeded global pollution
							if (!callbacks) {
								// we need to consider multiple engines in the same page
								if (!global.___eio) global.___eio = [];
								callbacks = global.___eio;
							}

							// callback identifier
							this.index = callbacks.length;

							// add callback to jsonp global
							var self = this;
							callbacks.push(function(msg) {
								self.onData(msg);
							});

							// append to query string
							this.query.j = this.index;

							// prevent spurious errors from being emitted when the window is unloaded
							if (global.document && global.addEventListener) {
								global.addEventListener('beforeunload', function() {
									if (self.script) self.script.onerror = empty;
								}, false);
							}
						}

						/**
						 * Inherits from Polling.
						 */

						inherit(JSONPPolling, Polling);

						/*
						 * JSONP only supports binary as base64 encoded strings
						 */

						JSONPPolling.prototype.supportsBinary = false;

						/**
						 * Closes the socket.
						 *
						 * @api private
						 */

						JSONPPolling.prototype.doClose = function() {
							if (this.script) {
								this.script.parentNode.removeChild(this.script);
								this.script = null;
							}

							if (this.form) {
								this.form.parentNode.removeChild(this.form);
								this.form = null;
								this.iframe = null;
							}

							Polling.prototype.doClose.call(this);
						};

						/**
						 * Starts a poll cycle.
						 *
						 * @api private
						 */

						JSONPPolling.prototype.doPoll = function() {
							var self = this;
							var script = document.createElement('script');

							if (this.script) {
								this.script.parentNode.removeChild(this.script);
								this.script = null;
							}

							script.async = true;
							script.src = this.uri();
							script.onerror = function(e) {
								self.onError('jsonp poll error', e);
							};

							var insertAt = document.getElementsByTagName('script')[0];
							insertAt.parentNode.insertBefore(script, insertAt);
							this.script = script;

							var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(getUserAgent());

							if (isUAgecko) {
								setTimeout(function() {
									var iframe = document.createElement('iframe');
									document.body.appendChild(iframe);
									document.body.removeChild(iframe);
								}, 100);
							}
						};

						/**
						 * Writes with a hidden iframe.
						 *
						 * @param {String} data to send
						 * @param {Function} called upon flush.
						 * @api private
						 */

						JSONPPolling.prototype.doWrite = function(data, fn) {
							var self = this;

							if (!this.form) {
								var form = document.createElement('form');
								var area = document.createElement('textarea');
								var id = this.iframeId = 'eio_iframe_' + this.index;
								var iframe;

								form.className = 'socketio';
								form.style.position = 'absolute';
								form.style.top = '-1000px';
								form.style.left = '-1000px';
								form.target = id;
								form.method = 'POST';
								form.setAttribute('accept-charset', 'utf-8');
								area.name = 'd';
								form.appendChild(area);
								document.body.appendChild(form);

								this.form = form;
								this.area = area;
							}

							this.form.action = this.uri();

							function complete() {
								initIframe();
								fn();
							}

							function initIframe() {
								if (self.iframe) {
									try {
										self.form.removeChild(self.iframe);
									} catch (e) {
										self.onError('jsonp polling iframe removal error', e);
									}
								}

								try {
									// ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
									var html = '<iframe src="javascript:0" name="' + self
										.iframeId + '">';
									iframe = document.createElement(html);
								} catch (e) {
									iframe = document.createElement('iframe');
									iframe.name = self.iframeId;
									iframe.src = 'javascript:0';
								}

								iframe.id = self.iframeId;

								self.form.appendChild(iframe);
								self.iframe = iframe;
							}

							initIframe();

							// escape \n to prevent it from being converted into \r\n by some UAs
							// double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
							data = data.replace(rEscapedNewline, '\\\n');
							this.area.value = data.replace(rNewline, '\\n');

							try {
								this.form.submit();
							} catch (e) {}

							if (this.iframe.attachEvent) {
								this.iframe.onreadystatechange = function() {
									if (self.iframe.readyState == 'complete') {
										complete();
									}
								};
							} else {
								this.iframe.onload = complete;
							}
						};

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"./polling": 18,
					"component-inherit": 21
				}],
				17: [function(_dereq_, module, exports) {
					(function(global) {
						/**
						 * Module requirements.
						 */

						var XMLHttpRequest = _dereq_('xmlhttprequest');
						var Polling = _dereq_('./polling');
						var Emitter = _dereq_('component-emitter');
						var inherit = _dereq_('component-inherit');
						var debug = _dereq_('debug')('engine.io-client:polling-xhr');

						/**
						 * Module exports.
						 */

						module.exports = XHR;
						module.exports.Request = Request;

						/**
						 * Empty function
						 */

						function empty() {}

						/**
						 * XHR Polling constructor.
						 *
						 * @param {Object} opts
						 * @api public
						 */

						function XHR(opts) {
							Polling.call(this, opts);

							if (global.location) {
								var isSSL = 'https:' == location.protocol;
								var port = location.port;

								// some user agents have empty `location.port`
								if (!port) {
									port = isSSL ? 443 : 80;
								}

								this.xd = opts.hostname != global.location.hostname ||
									port != opts.port;
								this.xs = opts.secure != isSSL;
							}
						}

						/**
						 * Inherits from Polling.
						 */

						inherit(XHR, Polling);

						/**
						 * XHR supports binary
						 */

						XHR.prototype.supportsBinary = true;

						/**
						 * Creates a request.
						 *
						 * @param {String} method
						 * @api private
						 */

						XHR.prototype.request = function(opts) {
							opts = opts || {};
							opts.uri = this.uri();
							opts.xd = this.xd;
							opts.xs = this.xs;
							opts.agent = this.agent || false;
							opts.supportsBinary = this.supportsBinary;
							opts.enablesXDR = this.enablesXDR;

							// SSL options for Node.js client
							opts.pfx = this.pfx;
							opts.key = this.key;
							opts.passphrase = this.passphrase;
							opts.cert = this.cert;
							opts.ca = this.ca;
							opts.ciphers = this.ciphers;
							opts.rejectUnauthorized = this.rejectUnauthorized;

							return new Request(opts);
						};

						/**
						 * Sends data.
						 *
						 * @param {String} data to send.
						 * @param {Function} called upon flush.
						 * @api private
						 */

						XHR.prototype.doWrite = function(data, fn) {
							var isBinary = typeof data !== 'string' && data !== undefined;
							var req = this.request({
								method: 'POST',
								data: data,
								isBinary: isBinary
							});
							var self = this;
							req.on('success', fn);
							req.on('error', function(err) {
								self.onError('xhr post error', err);
							});
							this.sendXhr = req;
						};

						/**
						 * Starts a poll cycle.
						 *
						 * @api private
						 */

						XHR.prototype.doPoll = function() {
							debug('xhr poll');
							var req = this.request();
							var self = this;
							req.on('data', function(data) {
								self.onData(data);
							});
							req.on('error', function(err) {
								self.onError('xhr poll error', err);
							});
							this.pollXhr = req;
						};

						/**
						 * Request constructor
						 *
						 * @param {Object} options
						 * @api public
						 */

						function Request(opts) {
							this.method = opts.method || 'GET';
							this.uri = opts.uri;
							this.xd = !!opts.xd;
							this.xs = !!opts.xs;
							this.async = false !== opts.async;
							this.data = undefined != opts.data ? opts.data : null;
							this.agent = opts.agent;
							this.isBinary = opts.isBinary;
							this.supportsBinary = opts.supportsBinary;
							this.enablesXDR = opts.enablesXDR;

							// SSL options for Node.js client
							this.pfx = opts.pfx;
							this.key = opts.key;
							this.passphrase = opts.passphrase;
							this.cert = opts.cert;
							this.ca = opts.ca;
							this.ciphers = opts.ciphers;
							this.rejectUnauthorized = opts.rejectUnauthorized;

							this.create();
						}

						/**
						 * Mix in `Emitter`.
						 */

						Emitter(Request.prototype);

						/**
						 * Creates the XHR object and sends the request.
						 *
						 * @api private
						 */

						Request.prototype.create = function() {
							var opts = {
								agent: this.agent,
								xdomain: this.xd,
								xscheme: this.xs,
								enablesXDR: this.enablesXDR
							};

							// SSL options for Node.js client
							opts.pfx = this.pfx;
							opts.key = this.key;
							opts.passphrase = this.passphrase;
							opts.cert = this.cert;
							opts.ca = this.ca;
							opts.ciphers = this.ciphers;
							opts.rejectUnauthorized = this.rejectUnauthorized;

							var xhr = this.xhr = new XMLHttpRequest(opts);
							var self = this;

							try {
								debug('xhr open %s: %s', this.method, this.uri);
								xhr.open(this.method, this.uri, this.async);
								if (this.supportsBinary) {
									// This has to be done after open because Firefox is stupid
									// http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
									xhr.responseType = 'arraybuffer';
								}

								if ('POST' == this.method) {
									try {
										if (this.isBinary) {
											xhr.setRequestHeader('Content-type',
												'application/octet-stream');
										} else {
											xhr.setRequestHeader('Content-type',
												'text/plain;charset=UTF-8');
										}
									} catch (e) {}
								}

								// ie6 check
								if ('withCredentials' in xhr) {
									xhr.withCredentials = true;
								}

								if (this.hasXDR()) {
									xhr.onload = function() {
										self.onLoad();
									};
									xhr.onerror = function() {
										self.onError(xhr.responseText);
									};
								} else {
									xhr.onreadystatechange = function() {
										if (4 != xhr.readyState) return;
										if (200 == xhr.status || 1223 == xhr.status) {
											self.onLoad();
										} else {
											// make sure the `error` event handler that's user-set
											// does not throw in the same tick and gets caught here
											setTimeout(function() {
												self.onError(xhr.status);
											}, 0);
										}
									};
								}

								debug('xhr data %s', this.data);
								xhr.send(this.data);
							} catch (e) {
								// Need to defer since .create() is called directly fhrom the constructor
								// and thus the 'error' event can only be only bound *after* this exception
								// occurs.  Therefore, also, we cannot throw here at all.
								setTimeout(function() {
									self.onError(e);
								}, 0);
								return;
							}

							if (global.document) {
								this.index = Request.requestsCount++;
								Request.requests[this.index] = this;
							}
						};

						/**
						 * Called upon successful response.
						 *
						 * @api private
						 */

						Request.prototype.onSuccess = function() {
							this.emit('success');
							this.cleanup();
						};

						/**
						 * Called if we have data.
						 *
						 * @api private
						 */

						Request.prototype.onData = function(data) {
							this.emit('data', data);
							this.onSuccess();
						};

						/**
						 * Called upon error.
						 *
						 * @api private
						 */

						Request.prototype.onError = function(err) {
							this.emit('error', err);
							this.cleanup(true);
						};

						/**
						 * Cleans up house.
						 *
						 * @api private
						 */

						Request.prototype.cleanup = function(fromError) {
							if ('undefined' == typeof this.xhr || null === this.xhr) {
								return;
							}
							// xmlhttprequest
							if (this.hasXDR()) {
								this.xhr.onload = this.xhr.onerror = empty;
							} else {
								this.xhr.onreadystatechange = empty;
							}

							if (fromError) {
								try {
									this.xhr.abort();
								} catch (e) {}
							}

							if (global.document) {
								delete Request.requests[this.index];
							}

							this.xhr = null;
						};

						/**
						 * Called upon load.
						 *
						 * @api private
						 */

						Request.prototype.onLoad = function() {
							var data;
							try {
								var contentType;
								try {
									contentType = this.xhr.getResponseHeader('Content-Type')
										.split(';')[0];
								} catch (e) {}
								if (contentType === 'application/octet-stream') {
									data = this.xhr.response;
								} else {
									if (!this.supportsBinary) {
										data = this.xhr.responseText;
									} else {
										data = 'ok';
									}
								}
							} catch (e) {
								this.onError(e);
							}
							if (null != data) {
								this.onData(data);
							}
						};

						/**
						 * Check if it has XDomainRequest.
						 *
						 * @api private
						 */

						Request.prototype.hasXDR = function() {
							return 'undefined' !== typeof global.XDomainRequest && !this.xs &&
								this.enablesXDR;
						};

						/**
						 * Aborts the request.
						 *
						 * @api public
						 */

						Request.prototype.abort = function() {
							this.cleanup();
						};

						/**
						 * Aborts pending requests when unloading the window. This is needed to prevent
						 * memory leaks (e.g. when using IE) and to ensure that no spurious error is
						 * emitted.
						 */

						if (global.document) {
							Request.requestsCount = 0;
							Request.requests = {};
							if (global.attachEvent) {
								global.attachEvent('onunload', unloadHandler);
							} else if (global.addEventListener) {
								global.addEventListener('beforeunload', unloadHandler, false);
							}
						}

						function unloadHandler() {
							for (var i in Request.requests) {
								if (Request.requests.hasOwnProperty(i)) {
									Request.requests[i].abort();
								}
							}
						}

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"./polling": 18,
					"component-emitter": 9,
					"component-inherit": 21,
					"debug": 22,
					"xmlhttprequest": 20
				}],
				18: [function(_dereq_, module, exports) {
					/**
					 * Module dependencies.
					 */

					var Transport = _dereq_('../transport');
					var parseqs = _dereq_('parseqs');
					var parser = _dereq_('engine.io-parser');
					var inherit = _dereq_('component-inherit');
					var debug = _dereq_('debug')('engine.io-client:polling');

					/**
					 * Module exports.
					 */

					module.exports = Polling;

					/**
					 * Is XHR2 supported?
					 */

					var hasXHR2 = (function() {
						var XMLHttpRequest = _dereq_('xmlhttprequest');
						var xhr = new XMLHttpRequest({
							xdomain: false
						});
						return null != xhr.responseType;
					})();

					/**
					 * Polling interface.
					 *
					 * @param {Object} opts
					 * @api private
					 */

					function Polling(opts) {
						var forceBase64 = (opts && opts.forceBase64);
						if (!hasXHR2 || forceBase64) {
							this.supportsBinary = false;
						}
						Transport.call(this, opts);
					}

					/**
					 * Inherits from Transport.
					 */

					inherit(Polling, Transport);

					/**
					 * Transport name.
					 */

					Polling.prototype.name = 'polling';

					/**
					 * Opens the socket (triggers polling). We write a PING message to determine
					 * when the transport is open.
					 *
					 * @api private
					 */

					Polling.prototype.doOpen = function() {
						this.poll();
					};

					/**
					 * Pauses polling.
					 *
					 * @param {Function} callback upon buffers are flushed and transport is paused
					 * @api private
					 */

					Polling.prototype.pause = function(onPause) {
						var pending = 0;
						var self = this;

						this.readyState = 'pausing';

						function pause() {
							debug('paused');
							self.readyState = 'paused';
							onPause();
						}

						if (this.polling || !this.writable) {
							var total = 0;

							if (this.polling) {
								debug('we are currently polling - waiting to pause');
								total++;
								this.once('pollComplete', function() {
									debug('pre-pause polling complete');
									--total || pause();
								});
							}

							if (!this.writable) {
								debug('we are currently writing - waiting to pause');
								total++;
								this.once('drain', function() {
									debug('pre-pause writing complete');
									--total || pause();
								});
							}
						} else {
							pause();
						}
					};

					/**
					 * Starts polling cycle.
					 *
					 * @api public
					 */

					Polling.prototype.poll = function() {
						debug('polling');
						this.polling = true;
						this.doPoll();
						this.emit('poll');
					};

					/**
					 * Overloads onData to detect payloads.
					 *
					 * @api private
					 */

					Polling.prototype.onData = function(data) {
						var self = this;
						debug('polling got data %s', data);
						var callback = function(packet, index, total) {
							// if its the first message we consider the transport open
							if ('opening' == self.readyState) {
								self.onOpen();
							}

							// if its a close packet, we close the ongoing requests
							if ('close' == packet.type) {
								self.onClose();
								return false;
							}

							// otherwise bypass onData and handle the message
							self.onPacket(packet);
						};

						// decode payload
						parser.decodePayload(data, this.socket.binaryType, callback);

						// if an event did not trigger closing
						if ('closed' != this.readyState) {
							// if we got data we're not polling
							this.polling = false;
							this.emit('pollComplete');

							if ('open' == this.readyState) {
								this.poll();
							} else {
								debug('ignoring poll - transport state "%s"', this.readyState);
							}
						}
					};

					/**
					 * For polling, send a close packet.
					 *
					 * @api private
					 */

					Polling.prototype.doClose = function() {
						var self = this;

						function close() {
							debug('writing close packet');
							self.write([{
								type: 'close'
							}]);
						}

						if ('open' == this.readyState) {
							debug('transport open - closing');
							close();
						} else {
							// in case we're trying to close while
							// handshaking is in progress (GH-164)
							debug('transport not open - deferring close');
							this.once('open', close);
						}
					};

					/**
					 * Writes a packets payload.
					 *
					 * @param {Array} data packets
					 * @param {Function} drain callback
					 * @api private
					 */

					Polling.prototype.write = function(packets) {
						var self = this;
						this.writable = false;
						var callbackfn = function() {
							self.writable = true;
							self.emit('drain');
						};

						var self = this;
						parser.encodePayload(packets, this.supportsBinary, function(data) {
							self.doWrite(data, callbackfn);
						});
					};

					/**
					 * Generates uri for connection.
					 *
					 * @api private
					 */

					Polling.prototype.uri = function() {
						var query = this.query || {};
						var schema = this.secure ? 'https' : 'http';
						var port = '';

						// cache busting is forced
						if (false !== this.timestampRequests) {
							query[this.timestampParam] = +new Date + '-' + Transport.timestamps++;
						}

						if (!this.supportsBinary && !query.sid) {
							query.b64 = 1;
						}

						query = parseqs.encode(query);

						// avoid port if default for schema
						if (this.port && (('https' == schema && this.port != 443) ||
								('http' == schema && this.port != 80))) {
							port = ':' + this.port;
						}

						// prepend ? to query
						if (query.length) {
							query = '?' + query;
						}

						return schema + '://' + this.hostname + port + this.path + query;
					};

				}, {
					"../transport": 14,
					"component-inherit": 21,
					"debug": 22,
					"engine.io-parser": 25,
					"parseqs": 33,
					"xmlhttprequest": 20
				}],
				19: [function(_dereq_, module, exports) {
					/**
					 * Module dependencies.
					 */

					var Transport = _dereq_('../transport');
					var parser = _dereq_('engine.io-parser');
					var parseqs = _dereq_('parseqs');
					var inherit = _dereq_('component-inherit');
					var debug = _dereq_('debug')('engine.io-client:websocket');

					/**
					 * `ws` exposes a WebSocket-compatible interface in
					 * Node, or the `WebSocket` or `MozWebSocket` globals
					 * in the browser.
					 */

					var WebSocket = _dereq_('ws');

					/**
					 * Module exports.
					 */

					module.exports = WS;

					/**
					 * WebSocket transport constructor.
					 *
					 * @api {Object} connection options
					 * @api public
					 */

					function WS(opts) {
						var forceBase64 = (opts && opts.forceBase64);
						if (forceBase64) {
							this.supportsBinary = false;
						}
						Transport.call(this, opts);
					}

					/**
					 * Inherits from Transport.
					 */

					inherit(WS, Transport);

					/**
					 * Transport name.
					 *
					 * @api public
					 */

					WS.prototype.name = 'websocket';

					/*
					 * WebSockets support binary
					 */

					WS.prototype.supportsBinary = true;

					/**
					 * Opens socket.
					 *
					 * @api private
					 */

					WS.prototype.doOpen = function() {
						if (!this.check()) {
							// let probe timeout
							return;
						}

						var self = this;
						var uri = this.uri();
						var protocols = void(0);
						var opts = {
							agent: this.agent
						};

						// SSL options for Node.js client
						opts.pfx = this.pfx;
						opts.key = this.key;
						opts.passphrase = this.passphrase;
						opts.cert = this.cert;
						opts.ca = this.ca;
						opts.ciphers = this.ciphers;
						opts.rejectUnauthorized = this.rejectUnauthorized;
						console.log('uri, protocols, opts = ' , uri, protocols, opts)
						this.ws = new WebSocket(uri, protocols, opts);

						if (this.ws.binaryType === undefined) {
							this.supportsBinary = false;
						}

						this.ws.binaryType = 'arraybuffer';
						this.addEventListeners();
					};

					/**
					 * Adds event listeners to the socket
					 *
					 * @api private
					 */

					WS.prototype.addEventListeners = function() {
						var self = this;

						this.ws.onopen = function() {
							self.onOpen();
						};
						this.ws.onclose = function() {
							self.onClose();
						};
						this.ws.onmessage = function(ev) {
							self.onData(ev.data);
						};
						this.ws.onerror = function(e) {
							self.onError('websocket error', e);
						};
					};

					/**
					 * Override `onData` to use a timer on iOS.
					 * See: https://gist.github.com/mloughran/2052006
					 *
					 * @api private
					 */

					if ('undefined' != typeof navigator &&
						/iPad|iPhone|iPod/i.test(getUserAgent())) {
						WS.prototype.onData = function(data) {
							var self = this;
							setTimeout(function() {
								Transport.prototype.onData.call(self, data);
							}, 0);
						};
					}

					/**
					 * Writes data to socket.
					 *
					 * @param {Array} array of packets.
					 * @api private
					 */

					WS.prototype.write = function(packets) {
						var self = this;
						this.writable = false;
						// encodePacket efficient as it uses WS framing
						// no need for encodePayload
						for (var i = 0, l = packets.length; i < l; i++) {
							parser.encodePacket(packets[i], this.supportsBinary, function(data) {
								//Sometimes the websocket has already been closed but the browser didn't
								//have a chance of informing us about it yet, in that case send will
								//throw an error
								try {
									self.ws.send(data);
								} catch (e) {
									debug('websocket closed before onclose event');
								}
							});
						}

						function ondrain() {
							self.writable = true;
							self.emit('drain');
						}
						// fake drain
						// defer to next tick to allow Socket to clear writeBuffer
						setTimeout(ondrain, 0);
					};

					/**
					 * Called upon close
					 *
					 * @api private
					 */

					WS.prototype.onClose = function() {
						Transport.prototype.onClose.call(this);
					};

					/**
					 * Closes socket.
					 *
					 * @api private
					 */

					WS.prototype.doClose = function() {
						if (typeof this.ws !== 'undefined') {
							this.ws.close();
						}
					};

					/**
					 * Generates uri for connection.
					 *
					 * @api private
					 */

					WS.prototype.uri = function() {
						var query = this.query || {};
						var schema = this.secure ? 'wss' : 'ws';
						var port = '';

						// avoid port if default for schema
						if (this.port && (('wss' == schema && this.port != 443) ||
								('ws' == schema && this.port != 80))) {
							port = ':' + this.port;
						}

						// append timestamp to URI
						if (this.timestampRequests) {
							query[this.timestampParam] = +new Date;
						}

						// communicate binary support capabilities
						if (!this.supportsBinary) {
							query.b64 = 1;
						}

						query = parseqs.encode(query);

						// prepend ? to query
						if (query.length) {
							query = '?' + query;
						}

						return schema + '://' + this.hostname + port + this.path + query;
					};

					/**
					 * Feature detection for WebSocket.
					 *
					 * @return {Boolean} whether this transport is available.
					 * @api public
					 */

					WS.prototype.check = function() {
						return !!WebSocket && !('__initialize' in WebSocket && this.name === WS
							.prototype.name);
					};

				}, {
					"../transport": 14,
					"component-inherit": 21,
					"debug": 22,
					"engine.io-parser": 25,
					"parseqs": 33,
					"ws": 35
				}],
				20: [function(_dereq_, module, exports) {
					// browser shim for xmlhttprequest module
					var hasCORS = _dereq_('has-cors');

					module.exports = function(opts) {
						var xdomain = opts.xdomain;

						// scheme must be same when usign XDomainRequest
						// http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
						var xscheme = opts.xscheme;

						// XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
						// https://github.com/Automattic/engine.io-client/pull/217
						var enablesXDR = opts.enablesXDR;

						// XMLHttpRequest can be disabled on IE
						try {
							if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
								return new XMLHttpRequest();
							}
						} catch (e) {}

						// Use XDomainRequest for IE8 if enablesXDR is true
						// because loading bar keeps flashing when using jsonp-polling
						// https://github.com/yujiosaka/socke.io-ie8-loading-example
						try {
							if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {
								return new XDomainRequest();
							}
						} catch (e) {}

						if (!xdomain) {
							try {
								return new ActiveXObject('Microsoft.XMLHTTP');
							} catch (e) {}
						}
					}

				}, {
					"has-cors": 38
				}],
				21: [function(_dereq_, module, exports) {

					module.exports = function(a, b) {
						var fn = function() {};
						fn.prototype = b.prototype;
						a.prototype = new fn;
						a.prototype.constructor = a;
					};
				}, {}],
				22: [function(_dereq_, module, exports) {

					/**
					 * This is the web browser implementation of `debug()`.
					 *
					 * Expose `debug()` as the module.
					 */

					exports = module.exports = _dereq_('./debug');
					exports.log = log;
					exports.formatArgs = formatArgs;
					exports.save = save;
					exports.load = load;
					exports.useColors = useColors;

					/**
					 * Colors.
					 */

					exports.colors = [
						'lightseagreen',
						'forestgreen',
						'goldenrod',
						'dodgerblue',
						'darkorchid',
						'crimson'
					];

					/**
					 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
					 * and the Firebug extension (any Firefox version) are known
					 * to support "%c" CSS customizations.
					 *
					 * TODO: add a `localStorage` variable to explicitly enable/disable colors
					 */

					function useColors() {
						// is webkit? http://stackoverflow.com/a/16459606/376773
						return ('WebkitAppearance' in document.documentElement.style) ||
							// is firebug? http://stackoverflow.com/a/398120/376773
							(window.console && (console.firebug || (console.exception && console
								.table))) ||
							// is firefox >= v31?
							// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
							(getUserAgent().toLowerCase().match(/firefox\/(\d+)/) &&
								parseInt(RegExp.$1, 10) >= 31);
					}

					/**
					 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
					 */

					exports.formatters.j = function(v) {
						return JSON.stringify(v);
					};


					/**
					 * Colorize log arguments if enabled.
					 *
					 * @api public
					 */

					function formatArgs() {
						var args = arguments;
						var useColors = this.useColors;

						args[0] = (useColors ? '%c' : '') +
							this.namespace +
							(useColors ? ' %c' : ' ') +
							args[0] +
							(useColors ? '%c ' : ' ') +
							'+' + exports.humanize(this.diff);

						if (!useColors) return args;

						var c = 'color: ' + this.color;
						args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args,
							1));

						// the final "%c" is somewhat tricky, because there could be other
						// arguments passed either before or after the %c, so we need to
						// figure out the correct index to insert the CSS into
						var index = 0;
						var lastC = 0;
						args[0].replace(/%[a-z%]/g, function(match) {
							if ('%%' === match) return;
							index++;
							if ('%c' === match) {
								// we only are interested in the *last* %c
								// (the user may have provided their own)
								lastC = index;
							}
						});

						args.splice(lastC, 0, c);
						return args;
					}

					/**
					 * Invokes `console.log()` when available.
					 * No-op when `console.log` is not a "function".
					 *
					 * @api public
					 */

					function log() {
						// This hackery is required for IE8,
						// where the `console.log` function doesn't have 'apply'
						return 'object' == typeof console &&
							'function' == typeof console.log &&
							Function.prototype.apply.call(console.log, console, arguments);
					}

					/**
					 * Save `namespaces`.
					 *
					 * @param {String} namespaces
					 * @api private
					 */

					function save(namespaces) {
						try {
							if (null == namespaces) {
								localStorage.removeItem('debug');
							} else {
								localStorage.debug = namespaces;
							}
						} catch (e) {}
					}

					/**
					 * Load `namespaces`.
					 *
					 * @return {String} returns the previously persisted debug modes
					 * @api private
					 */

					function load() {
						var r;
						try {
							r = localStorage.debug;
						} catch (e) {}
						return r;
					}

					/**
					 * Enable namespaces listed in `localStorage.debug` initially.
					 */

					exports.enable(load());

				}, {
					"./debug": 23
				}],
				23: [function(_dereq_, module, exports) {

					/**
					 * This is the common logic for both the Node.js and web browser
					 * implementations of `debug()`.
					 *
					 * Expose `debug()` as the module.
					 */

					exports = module.exports = debug;
					exports.coerce = coerce;
					exports.disable = disable;
					exports.enable = enable;
					exports.enabled = enabled;
					exports.humanize = _dereq_('ms');

					/**
					 * The currently active debug mode names, and names to skip.
					 */

					exports.names = [];
					exports.skips = [];

					/**
					 * Map of special "%n" handling functions, for the debug "format" argument.
					 *
					 * Valid key names are a single, lowercased letter, i.e. "n".
					 */

					exports.formatters = {};

					/**
					 * Previously assigned color.
					 */

					var prevColor = 0;

					/**
					 * Previous log timestamp.
					 */

					var prevTime;

					/**
					 * Select a color.
					 *
					 * @return {Number}
					 * @api private
					 */

					function selectColor() {
						return exports.colors[prevColor++ % exports.colors.length];
					}

					/**
					 * Create a debugger with the given `namespace`.
					 *
					 * @param {String} namespace
					 * @return {Function}
					 * @api public
					 */

					function debug(namespace) {

						// define the `disabled` version
						function disabled() {}
						disabled.enabled = false;

						// define the `enabled` version
						function enabled() {

							var self = enabled;

							// set `diff` timestamp
							var curr = +new Date();
							var ms = curr - (prevTime || curr);
							self.diff = ms;
							self.prev = prevTime;
							self.curr = curr;
							prevTime = curr;

							// add the `color` if not set
							if (null == self.useColors) self.useColors = exports.useColors();
							if (null == self.color && self.useColors) self.color = selectColor();

							var args = Array.prototype.slice.call(arguments);

							args[0] = exports.coerce(args[0]);

							if ('string' !== typeof args[0]) {
								// anything else let's inspect with %o
								args = ['%o'].concat(args);
							}

							// apply any `formatters` transformations
							var index = 0;
							args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
								// if we encounter an escaped % then don't increase the array index
								if (match === '%%') return match;
								index++;
								var formatter = exports.formatters[format];
								if ('function' === typeof formatter) {
									var val = args[index];
									match = formatter.call(self, val);

									// now we need to remove `args[index]` since it's inlined in the `format`
									args.splice(index, 1);
									index--;
								}
								return match;
							});

							if ('function' === typeof exports.formatArgs) {
								args = exports.formatArgs.apply(self, args);
							}
							var logFn = enabled.log || exports.log || console.log.bind(console);
							logFn.apply(self, args);
						}
						enabled.enabled = true;

						var fn = exports.enabled(namespace) ? enabled : disabled;

						fn.namespace = namespace;

						return fn;
					}

					/**
					 * Enables a debug mode by namespaces. This can include modes
					 * separated by a colon and wildcards.
					 *
					 * @param {String} namespaces
					 * @api public
					 */

					function enable(namespaces) {
						exports.save(namespaces);

						var split = (namespaces || '').split(/[\s,]+/);
						var len = split.length;

						for (var i = 0; i < len; i++) {
							if (!split[i]) continue; // ignore empty strings
							namespaces = split[i].replace(/\*/g, '.*?');
							if (namespaces[0] === '-') {
								exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
							} else {
								exports.names.push(new RegExp('^' + namespaces + '$'));
							}
						}
					}

					/**
					 * Disable debug output.
					 *
					 * @api public
					 */

					function disable() {
						exports.enable('');
					}

					/**
					 * Returns true if the given mode name is enabled, false otherwise.
					 *
					 * @param {String} name
					 * @return {Boolean}
					 * @api public
					 */

					function enabled(name) {
						var i, len;
						for (i = 0, len = exports.skips.length; i < len; i++) {
							if (exports.skips[i].test(name)) {
								return false;
							}
						}
						for (i = 0, len = exports.names.length; i < len; i++) {
							if (exports.names[i].test(name)) {
								return true;
							}
						}
						return false;
					}

					/**
					 * Coerce `val`.
					 *
					 * @param {Mixed} val
					 * @return {Mixed}
					 * @api private
					 */

					function coerce(val) {
						if (val instanceof Error) return val.stack || val.message;
						return val;
					}

				}, {
					"ms": 24
				}],
				24: [function(_dereq_, module, exports) {
					/**
					 * Helpers.
					 */

					var s = 1000;
					var m = s * 60;
					var h = m * 60;
					var d = h * 24;
					var y = d * 365.25;

					/**
					 * Parse or format the given `val`.
					 *
					 * Options:
					 *
					 *  - `long` verbose formatting [false]
					 *
					 * @param {String|Number} val
					 * @param {Object} options
					 * @return {String|Number}
					 * @api public
					 */

					module.exports = function(val, options) {
						options = options || {};
						if ('string' == typeof val) return parse(val);
						return options.long ?
							long(val) :
							short(val);
					};

					/**
					 * Parse the given `str` and return milliseconds.
					 *
					 * @param {String} str
					 * @return {Number}
					 * @api private
					 */

					function parse(str) {
						var match =
							/^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i
							.exec(str);
						if (!match) return;
						var n = parseFloat(match[1]);
						var type = (match[2] || 'ms').toLowerCase();
						switch (type) {
							case 'years':
							case 'year':
							case 'y':
								return n * y;
							case 'days':
							case 'day':
							case 'd':
								return n * d;
							case 'hours':
							case 'hour':
							case 'h':
								return n * h;
							case 'minutes':
							case 'minute':
							case 'm':
								return n * m;
							case 'seconds':
							case 'second':
							case 's':
								return n * s;
							case 'ms':
								return n;
						}
					}

					/**
					 * Short format for `ms`.
					 *
					 * @param {Number} ms
					 * @return {String}
					 * @api private
					 */

					function short(ms) {
						if (ms >= d) return Math.round(ms / d) + 'd';
						if (ms >= h) return Math.round(ms / h) + 'h';
						if (ms >= m) return Math.round(ms / m) + 'm';
						if (ms >= s) return Math.round(ms / s) + 's';
						return ms + 'ms';
					}

					/**
					 * Long format for `ms`.
					 *
					 * @param {Number} ms
					 * @return {String}
					 * @api private
					 */

					function long(ms) {
						return plural(ms, d, 'day') ||
							plural(ms, h, 'hour') ||
							plural(ms, m, 'minute') ||
							plural(ms, s, 'second') ||
							ms + ' ms';
					}

					/**
					 * Pluralization helper.
					 */

					function plural(ms, n, name) {
						if (ms < n) return;
						if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
						return Math.ceil(ms / n) + ' ' + name + 's';
					}

				}, {}],
				25: [function(_dereq_, module, exports) {
					(function(global) {
						/**
						 * Module dependencies.
						 */

						var keys = _dereq_('./keys');
						var hasBinary = _dereq_('has-binary');
						var sliceBuffer = _dereq_('arraybuffer.slice');
						var base64encoder = _dereq_('base64-arraybuffer');
						var after = _dereq_('after');
						var utf8 = _dereq_('utf8');

						/**
						 * Check if we are running an android browser. That requires us to use
						 * ArrayBuffer with polling transports...
						 *
						 * http://ghinda.net/jpeg-blob-ajax-android/
						 */

						var isAndroid = getUserAgent().match(/Android/i);

						/**
						 * Check if we are running in PhantomJS.
						 * Uploading a Blob with PhantomJS does not work correctly, as reported here:
						 * https://github.com/ariya/phantomjs/issues/11395
						 * @type boolean
						 */
						var isPhantomJS = /PhantomJS/i.test(getUserAgent());

						/**
						 * When true, avoids using Blobs to encode payloads.
						 * @type boolean
						 */
						var dontSendBlobs = isAndroid || isPhantomJS;

						/**
						 * Current protocol version.
						 */

						exports.protocol = 3;

						/**
						 * Packet types.
						 */

						var packets = exports.packets = {
							open: 0 // non-ws
								,
							close: 1 // non-ws
								,
							ping: 2,
							pong: 3,
							message: 4,
							upgrade: 5,
							noop: 6
						};

						var packetslist = keys(packets);

						/**
						 * Premade error packet.
						 */

						var err = {
							type: 'error',
							data: 'parser error'
						};

						/**
						 * Create a blob api even for blob builder when vendor prefixes exist
						 */

						var Blob = _dereq_('blob');

						/**
						 * Encodes a packet.
						 *
						 *     <packet type id> [ <data> ]
						 *
						 * Example:
						 *
						 *     5hello world
						 *     3
						 *     4
						 *
						 * Binary is encoded in an identical principle
						 *
						 * @api private
						 */

						exports.encodePacket = function(packet, supportsBinary, utf8encode,
							callback) {
							if ('function' == typeof supportsBinary) {
								callback = supportsBinary;
								supportsBinary = false;
							}

							if ('function' == typeof utf8encode) {
								callback = utf8encode;
								utf8encode = null;
							}

							var data = (packet.data === undefined) ?
								undefined :
								packet.data.buffer || packet.data;

							if (global.ArrayBuffer && data instanceof ArrayBuffer) {
								return encodeArrayBuffer(packet, supportsBinary, callback);
							} else if (Blob && data instanceof global.Blob) {
								return encodeBlob(packet, supportsBinary, callback);
							}

							// might be an object with { base64: true, data: dataAsBase64String }
							if (data && data.base64) {
								return encodeBase64Object(packet, callback);
							}

							// Sending data as a utf-8 string
							var encoded = packets[packet.type];

							// data fragment is optional
							if (undefined !== packet.data) {
								encoded += utf8encode ? utf8.encode(String(packet.data)) :
									String(packet.data);
							}

							return callback('' + encoded);

						};

						function encodeBase64Object(packet, callback) {
							// packet data is an object { base64: true, data: dataAsBase64String }
							var message = 'b' + exports.packets[packet.type] + packet.data.data;
							return callback(message);
						}

						/**
						 * Encode packet helpers for binary types
						 */

						function encodeArrayBuffer(packet, supportsBinary, callback) {
							if (!supportsBinary) {
								return exports.encodeBase64Packet(packet, callback);
							}

							var data = packet.data;
							var contentArray = new Uint8Array(data);
							var resultBuffer = new Uint8Array(1 + data.byteLength);

							resultBuffer[0] = packets[packet.type];
							for (var i = 0; i < contentArray.length; i++) {
								resultBuffer[i + 1] = contentArray[i];
							}

							return callback(resultBuffer.buffer);
						}

						function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
							if (!supportsBinary) {
								return exports.encodeBase64Packet(packet, callback);
							}

							var fr = new FileReader();
							fr.onload = function() {
								packet.data = fr.result;
								exports.encodePacket(packet, supportsBinary, true, callback);
							};
							return fr.readAsArrayBuffer(packet.data);
						}

						function encodeBlob(packet, supportsBinary, callback) {
							if (!supportsBinary) {
								return exports.encodeBase64Packet(packet, callback);
							}

							if (dontSendBlobs) {
								return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
							}

							var length = new Uint8Array(1);
							length[0] = packets[packet.type];
							var blob = new Blob([length.buffer, packet.data]);

							return callback(blob);
						}

						/**
						 * Encodes a packet with binary data in a base64 string
						 *
						 * @param {Object} packet, has `type` and `data`
						 * @return {String} base64 encoded message
						 */

						exports.encodeBase64Packet = function(packet, callback) {
							var message = 'b' + exports.packets[packet.type];
							if (Blob && packet.data instanceof Blob) {
								var fr = new FileReader();
								fr.onload = function() {
									var b64 = fr.result.split(',')[1];
									callback(message + b64);
								};
								return fr.readAsDataURL(packet.data);
							}

							var b64data;
							try {
								b64data = String.fromCharCode.apply(null, new Uint8Array(packet
									.data));
							} catch (e) {
								// iPhone Safari doesn't let you apply with typed arrays
								var typed = new Uint8Array(packet.data);
								var basic = new Array(typed.length);
								for (var i = 0; i < typed.length; i++) {
									basic[i] = typed[i];
								}
								b64data = String.fromCharCode.apply(null, basic);
							}
							message += global.btoa(b64data);
							return callback(message);
						};

						/**
						 * Decodes a packet. Changes format to Blob if requested.
						 *
						 * @return {Object} with `type` and `data` (if any)
						 * @api private
						 */

						exports.decodePacket = function(data, binaryType, utf8decode) {
							// String data
							if (typeof data == 'string' || data === undefined) {
								if (data.charAt(0) == 'b') {
									return exports.decodeBase64Packet(data.substr(1),
										binaryType);
								}

								if (utf8decode) {
									try {
										data = utf8.decode(data);
									} catch (e) {
										return err;
									}
								}
								var type = data.charAt(0);

								if (Number(type) != type || !packetslist[type]) {
									return err;
								}

								if (data.length > 1) {
									return {
										type: packetslist[type],
										data: data.substring(1)
									};
								} else {
									return {
										type: packetslist[type]
									};
								}
							}

							var asArray = new Uint8Array(data);
							var type = asArray[0];
							var rest = sliceBuffer(data, 1);
							if (Blob && binaryType === 'blob') {
								rest = new Blob([rest]);
							}
							return {
								type: packetslist[type],
								data: rest
							};
						};

						/**
						 * Decodes a packet encoded in a base64 string
						 *
						 * @param {String} base64 encoded message
						 * @return {Object} with `type` and `data` (if any)
						 */

						exports.decodeBase64Packet = function(msg, binaryType) {
							var type = packetslist[msg.charAt(0)];
							if (!global.ArrayBuffer) {
								return {
									type: type,
									data: {
										base64: true,
										data: msg.substr(1)
									}
								};
							}

							var data = base64encoder.decode(msg.substr(1));

							if (binaryType === 'blob' && Blob) {
								data = new Blob([data]);
							}

							return {
								type: type,
								data: data
							};
						};

						/**
						 * Encodes multiple messages (payload).
						 *
						 *     <length>:data
						 *
						 * Example:
						 *
						 *     11:hello world2:hi
						 *
						 * If any contents are binary, they will be encoded as base64 strings. Base64
						 * encoded strings are marked with a b before the length specifier
						 *
						 * @param {Array} packets
						 * @api private
						 */

						exports.encodePayload = function(packets, supportsBinary, callback) {
							if (typeof supportsBinary == 'function') {
								callback = supportsBinary;
								supportsBinary = null;
							}

							var isBinary = hasBinary(packets);

							if (supportsBinary && isBinary) {
								if (Blob && !dontSendBlobs) {
									return exports.encodePayloadAsBlob(packets, callback);
								}

								return exports.encodePayloadAsArrayBuffer(packets, callback);
							}

							if (!packets.length) {
								return callback('0:');
							}

							function setLengthHeader(message) {
								return message.length + ':' + message;
							}

							function encodeOne(packet, doneCallback) {
								exports.encodePacket(packet, !isBinary ? false : supportsBinary,
									true,
									function(message) {
										doneCallback(null, setLengthHeader(message));
									});
							}

							map(packets, encodeOne, function(err, results) {
								return callback(results.join(''));
							});
						};

						/**
						 * Async array map using after
						 */

						function map(ary, each, done) {
							var result = new Array(ary.length);
							var next = after(ary.length, done);

							var eachWithIndex = function(i, el, cb) {
								each(el, function(error, msg) {
									result[i] = msg;
									cb(error, result);
								});
							};

							for (var i = 0; i < ary.length; i++) {
								eachWithIndex(i, ary[i], next);
							}
						}

						/*
						 * Decodes data when a payload is maybe expected. Possible binary contents are
						 * decoded from their base64 representation
						 *
						 * @param {String} data, callback method
						 * @api public
						 */

						exports.decodePayload = function(data, binaryType, callback) {
							if (typeof data != 'string') {
								return exports.decodePayloadAsBinary(data, binaryType,
									callback);
							}

							if (typeof binaryType === 'function') {
								callback = binaryType;
								binaryType = null;
							}

							var packet;
							if (data == '') {
								// parser error - ignoring payload
								return callback(err, 0, 1);
							}

							var length = '',
								n, msg;

							for (var i = 0, l = data.length; i < l; i++) {
								var chr = data.charAt(i);

								if (':' != chr) {
									length += chr;
								} else {
									if ('' == length || (length != (n = Number(length)))) {
										// parser error - ignoring payload
										return callback(err, 0, 1);
									}

									msg = data.substr(i + 1, n);

									if (length != msg.length) {
										// parser error - ignoring payload
										return callback(err, 0, 1);
									}

									if (msg.length) {
										packet = exports.decodePacket(msg, binaryType, true);

										if (err.type == packet.type && err.data == packet
											.data) {
											// parser error in individual packet - ignoring payload
											return callback(err, 0, 1);
										}

										var ret = callback(packet, i + n, l);
										if (false === ret) return;
									}

									// advance cursor
									i += n;
									length = '';
								}
							}

							if (length != '') {
								// parser error - ignoring payload
								return callback(err, 0, 1);
							}

						};

						/**
						 * Encodes multiple messages (payload) as binary.
						 *
						 * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
						 * 255><data>
						 *
						 * Example:
						 * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
						 *
						 * @param {Array} packets
						 * @return {ArrayBuffer} encoded payload
						 * @api private
						 */

						exports.encodePayloadAsArrayBuffer = function(packets, callback) {
							if (!packets.length) {
								return callback(new ArrayBuffer(0));
							}

							function encodeOne(packet, doneCallback) {
								exports.encodePacket(packet, true, true, function(data) {
									return doneCallback(null, data);
								});
							}

							map(packets, encodeOne, function(err, encodedPackets) {
								var totalLength = encodedPackets.reduce(function(acc,
									p) {
									var len;
									if (typeof p === 'string') {
										len = p.length;
									} else {
										len = p.byteLength;
									}
									return acc + len.toString().length + len +
										2; // string/binary identifier + separator = 2
								}, 0);

								var resultArray = new Uint8Array(totalLength);

								var bufferIndex = 0;
								encodedPackets.forEach(function(p) {
									var isString = typeof p === 'string';
									var ab = p;
									if (isString) {
										var view = new Uint8Array(p.length);
										for (var i = 0; i < p.length; i++) {
											view[i] = p.charCodeAt(i);
										}
										ab = view.buffer;
									}

									if (isString) { // not true binary
										resultArray[bufferIndex++] = 0;
									} else { // true binary
										resultArray[bufferIndex++] = 1;
									}

									var lenStr = ab.byteLength.toString();
									for (var i = 0; i < lenStr.length; i++) {
										resultArray[bufferIndex++] = parseInt(
											lenStr[i]);
									}
									resultArray[bufferIndex++] = 255;

									var view = new Uint8Array(ab);
									for (var i = 0; i < view.length; i++) {
										resultArray[bufferIndex++] = view[i];
									}
								});

								return callback(resultArray.buffer);
							});
						};

						/**
						 * Encode as Blob
						 */

						exports.encodePayloadAsBlob = function(packets, callback) {
							function encodeOne(packet, doneCallback) {
								exports.encodePacket(packet, true, true, function(encoded) {
									var binaryIdentifier = new Uint8Array(1);
									binaryIdentifier[0] = 1;
									if (typeof encoded === 'string') {
										var view = new Uint8Array(encoded.length);
										for (var i = 0; i < encoded.length; i++) {
											view[i] = encoded.charCodeAt(i);
										}
										encoded = view.buffer;
										binaryIdentifier[0] = 0;
									}

									var len = (encoded instanceof ArrayBuffer) ?
										encoded.byteLength :
										encoded.size;

									var lenStr = len.toString();
									var lengthAry = new Uint8Array(lenStr.length + 1);
									for (var i = 0; i < lenStr.length; i++) {
										lengthAry[i] = parseInt(lenStr[i]);
									}
									lengthAry[lenStr.length] = 255;

									if (Blob) {
										var blob = new Blob([binaryIdentifier.buffer,
											lengthAry.buffer, encoded
										]);
										doneCallback(null, blob);
									}
								});
							}

							map(packets, encodeOne, function(err, results) {
								return callback(new Blob(results));
							});
						};

						/*
						 * Decodes data when a payload is maybe expected. Strings are decoded by
						 * interpreting each byte as a key code for entries marked to start with 0. See
						 * description of encodePayloadAsBinary
						 *
						 * @param {ArrayBuffer} data, callback method
						 * @api public
						 */

						exports.decodePayloadAsBinary = function(data, binaryType, callback) {
							if (typeof binaryType === 'function') {
								callback = binaryType;
								binaryType = null;
							}

							var bufferTail = data;
							var buffers = [];

							var numberTooLong = false;
							while (bufferTail.byteLength > 0) {
								var tailArray = new Uint8Array(bufferTail);
								var isString = tailArray[0] === 0;
								var msgLength = '';

								for (var i = 1;; i++) {
									if (tailArray[i] == 255) break;

									if (msgLength.length > 310) {
										numberTooLong = true;
										break;
									}

									msgLength += tailArray[i];
								}

								if (numberTooLong) return callback(err, 0, 1);

								bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
								msgLength = parseInt(msgLength);

								var msg = sliceBuffer(bufferTail, 0, msgLength);
								if (isString) {
									try {
										msg = String.fromCharCode.apply(null, new Uint8Array(
											msg));
									} catch (e) {
										// iPhone Safari doesn't let you apply to typed arrays
										var typed = new Uint8Array(msg);
										msg = '';
										for (var i = 0; i < typed.length; i++) {
											msg += String.fromCharCode(typed[i]);
										}
									}
								}

								buffers.push(msg);
								bufferTail = sliceBuffer(bufferTail, msgLength);
							}

							var total = buffers.length;
							buffers.forEach(function(buffer, i) {
								callback(exports.decodePacket(buffer, binaryType, true),
									i, total);
							});
						};

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"./keys": 26,
					"after": 27,
					"arraybuffer.slice": 28,
					"base64-arraybuffer": 29,
					"blob": 30,
					"has-binary": 36,
					"utf8": 31
				}],
				26: [function(_dereq_, module, exports) {

					/**
					 * Gets the keys for an object.
					 *
					 * @return {Array} keys
					 * @api private
					 */

					module.exports = Object.keys || function keys(obj) {
						var arr = [];
						var has = Object.prototype.hasOwnProperty;

						for (var i in obj) {
							if (has.call(obj, i)) {
								arr.push(i);
							}
						}
						return arr;
					};

				}, {}],
				27: [function(_dereq_, module, exports) {
					module.exports = after

					function after(count, callback, err_cb) {
						var bail = false
						err_cb = err_cb || noop
						proxy.count = count

						return (count === 0) ? callback() : proxy

						function proxy(err, result) {
							if (proxy.count <= 0) {
								throw new Error('after called too many times')
							}
							--proxy.count

							// after first error, rest are passed to err_cb
							if (err) {
								bail = true
								callback(err)
								// future error callbacks will go to error handler
								callback = err_cb
							} else if (proxy.count === 0 && !bail) {
								callback(null, result)
							}
						}
					}

					function noop() {}

				}, {}],
				28: [function(_dereq_, module, exports) {
					/**
					 * An abstraction for slicing an arraybuffer even when
					 * ArrayBuffer.prototype.slice is not supported
					 *
					 * @api public
					 */

					module.exports = function(arraybuffer, start, end) {
						var bytes = arraybuffer.byteLength;
						start = start || 0;
						end = end || bytes;

						if (arraybuffer.slice) {
							return arraybuffer.slice(start, end);
						}

						if (start < 0) {
							start += bytes;
						}
						if (end < 0) {
							end += bytes;
						}
						if (end > bytes) {
							end = bytes;
						}

						if (start >= bytes || start >= end || bytes === 0) {
							return new ArrayBuffer(0);
						}

						var abv = new Uint8Array(arraybuffer);
						var result = new Uint8Array(end - start);
						for (var i = start, ii = 0; i < end; i++, ii++) {
							result[ii] = abv[i];
						}
						return result.buffer;
					};

				}, {}],
				29: [function(_dereq_, module, exports) {
					/*
					 * base64-arraybuffer
					 * https://github.com/niklasvh/base64-arraybuffer
					 *
					 * Copyright (c) 2012 Niklas von Hertzen
					 * Licensed under the MIT license.
					 */
					(function(chars) {
						"use strict";

						exports.encode = function(arraybuffer) {
							var bytes = new Uint8Array(arraybuffer),
								i, len = bytes.length,
								base64 = "";

							for (i = 0; i < len; i += 3) {
								base64 += chars[bytes[i] >> 2];
								base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
								base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >>
									6)];
								base64 += chars[bytes[i + 2] & 63];
							}

							if ((len % 3) === 2) {
								base64 = base64.substring(0, base64.length - 1) + "=";
							} else if (len % 3 === 1) {
								base64 = base64.substring(0, base64.length - 2) + "==";
							}

							return base64;
						};

						exports.decode = function(base64) {
							var bufferLength = base64.length * 0.75,
								len = base64.length,
								i, p = 0,
								encoded1, encoded2, encoded3, encoded4;

							if (base64[base64.length - 1] === "=") {
								bufferLength--;
								if (base64[base64.length - 2] === "=") {
									bufferLength--;
								}
							}

							var arraybuffer = new ArrayBuffer(bufferLength),
								bytes = new Uint8Array(arraybuffer);

							for (i = 0; i < len; i += 4) {
								encoded1 = chars.indexOf(base64[i]);
								encoded2 = chars.indexOf(base64[i + 1]);
								encoded3 = chars.indexOf(base64[i + 2]);
								encoded4 = chars.indexOf(base64[i + 3]);

								bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
								bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
								bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
							}

							return arraybuffer;
						};
					})("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");

				}, {}],
				30: [function(_dereq_, module, exports) {
					(function(global) {
						/**
						 * Create a blob builder even when vendor prefixes exist
						 */

						var BlobBuilder = global.BlobBuilder ||
							global.WebKitBlobBuilder ||
							global.MSBlobBuilder ||
							global.MozBlobBuilder;

						/**
						 * Check if Blob constructor is supported
						 */

						var blobSupported = (function() {
							try {
								var a = new Blob(['hi']);
								return a.size === 2;
							} catch (e) {
								return false;
							}
						})();

						/**
						 * Check if Blob constructor supports ArrayBufferViews
						 * Fails in Safari 6, so we need to map to ArrayBuffers there.
						 */

						var blobSupportsArrayBufferView = blobSupported && (function() {
							try {
								var b = new Blob([new Uint8Array([1, 2])]);
								return b.size === 2;
							} catch (e) {
								return false;
							}
						})();

						/**
						 * Check if BlobBuilder is supported
						 */

						var blobBuilderSupported = BlobBuilder &&
							BlobBuilder.prototype.append &&
							BlobBuilder.prototype.getBlob;

						/**
						 * Helper function that maps ArrayBufferViews to ArrayBuffers
						 * Used by BlobBuilder constructor and old browsers that didn't
						 * support it in the Blob constructor.
						 */

						function mapArrayBufferViews(ary) {
							for (var i = 0; i < ary.length; i++) {
								var chunk = ary[i];
								if (chunk.buffer instanceof ArrayBuffer) {
									var buf = chunk.buffer;

									// if this is a subarray, make a copy so we only
									// include the subarray region from the underlying buffer
									if (chunk.byteLength !== buf.byteLength) {
										var copy = new Uint8Array(chunk.byteLength);
										copy.set(new Uint8Array(buf, chunk.byteOffset, chunk
											.byteLength));
										buf = copy.buffer;
									}

									ary[i] = buf;
								}
							}
						}

						function BlobBuilderConstructor(ary, options) {
							options = options || {};

							var bb = new BlobBuilder();
							mapArrayBufferViews(ary);

							for (var i = 0; i < ary.length; i++) {
								bb.append(ary[i]);
							}

							return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
						};

						function BlobConstructor(ary, options) {
							mapArrayBufferViews(ary);
							return new Blob(ary, options || {});
						};

						module.exports = (function() {
							if (blobSupported) {
								return blobSupportsArrayBufferView ? global.Blob :
									BlobConstructor;
							} else if (blobBuilderSupported) {
								return BlobBuilderConstructor;
							} else {
								return undefined;
							}
						})();

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {}],
				31: [function(_dereq_, module, exports) {
					(function(global) {
						/*! https://mths.be/utf8js v2.0.0 by @mathias */
						;
						(function(root) {

							// Detect free variables `exports`
							var freeExports = typeof exports == 'object' && exports;

							// Detect free variable `module`
							var freeModule = typeof module == 'object' && module &&
								module.exports == freeExports && module;

							// Detect free variable `global`, from Node.js or Browserified code,
							// and use it as `root`
							var freeGlobal = typeof global == 'object' && global;
							if (freeGlobal.global === freeGlobal || freeGlobal.window ===
								freeGlobal) {
								root = freeGlobal;
							}

							/*--------------------------------------------------------------------------*/

							var stringFromCharCode = String.fromCharCode;

							// Taken from https://mths.be/punycode
							function ucs2decode(string) {
								var output = [];
								var counter = 0;
								var length = string.length;
								var value;
								var extra;
								while (counter < length) {
									value = string.charCodeAt(counter++);
									if (value >= 0xD800 && value <= 0xDBFF && counter <
										length) {
										// high surrogate, and there is a next character
										extra = string.charCodeAt(counter++);
										if ((extra & 0xFC00) == 0xDC00) { // low surrogate
											output.push(((value & 0x3FF) << 10) + (extra &
												0x3FF) + 0x10000);
										} else {
											// unmatched surrogate; only append this code unit, in case the next
											// code unit is the high surrogate of a surrogate pair
											output.push(value);
											counter--;
										}
									} else {
										output.push(value);
									}
								}
								return output;
							}

							// Taken from https://mths.be/punycode
							function ucs2encode(array) {
								var length = array.length;
								var index = -1;
								var value;
								var output = '';
								while (++index < length) {
									value = array[index];
									if (value > 0xFFFF) {
										value -= 0x10000;
										output += stringFromCharCode(value >>> 10 & 0x3FF |
											0xD800);
										value = 0xDC00 | value & 0x3FF;
									}
									output += stringFromCharCode(value);
								}
								return output;
							}

							function checkScalarValue(codePoint) {
								if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
									throw Error(
										'Lone surrogate U+' + codePoint.toString(16)
										.toUpperCase() +
										' is not a scalar value'
									);
								}
							}
							/*--------------------------------------------------------------------------*/

							function createByte(codePoint, shift) {
								return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
							}

							function encodeCodePoint(codePoint) {
								if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
									return stringFromCharCode(codePoint);
								}
								var symbol = '';
								if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
									symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) |
										0xC0);
								} else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
									checkScalarValue(codePoint);
									symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) |
										0xE0);
									symbol += createByte(codePoint, 6);
								} else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
									symbol = stringFromCharCode(((codePoint >> 18) & 0x07) |
										0xF0);
									symbol += createByte(codePoint, 12);
									symbol += createByte(codePoint, 6);
								}
								symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
								return symbol;
							}

							function utf8encode(string) {
								var codePoints = ucs2decode(string);
								var length = codePoints.length;
								var index = -1;
								var codePoint;
								var byteString = '';
								while (++index < length) {
									codePoint = codePoints[index];
									byteString += encodeCodePoint(codePoint);
								}
								return byteString;
							}

							/*--------------------------------------------------------------------------*/

							function readContinuationByte() {
								if (byteIndex >= byteCount) {
									throw Error('Invalid byte index');
								}

								var continuationByte = byteArray[byteIndex] & 0xFF;
								byteIndex++;

								if ((continuationByte & 0xC0) == 0x80) {
									return continuationByte & 0x3F;
								}

								// If we end up here, it鈥檚 not a continuation byte
								throw Error('Invalid continuation byte');
							}

							function decodeSymbol() {
								var byte1;
								var byte2;
								var byte3;
								var byte4;
								var codePoint;

								if (byteIndex > byteCount) {
									throw Error('Invalid byte index');
								}

								if (byteIndex == byteCount) {
									return false;
								}

								// Read first byte
								byte1 = byteArray[byteIndex] & 0xFF;
								byteIndex++;

								// 1-byte sequence (no continuation bytes)
								if ((byte1 & 0x80) == 0) {
									return byte1;
								}

								// 2-byte sequence
								if ((byte1 & 0xE0) == 0xC0) {
									var byte2 = readContinuationByte();
									codePoint = ((byte1 & 0x1F) << 6) | byte2;
									if (codePoint >= 0x80) {
										return codePoint;
									} else {
										throw Error('Invalid continuation byte');
									}
								}

								// 3-byte sequence (may include unpaired surrogates)
								if ((byte1 & 0xF0) == 0xE0) {
									byte2 = readContinuationByte();
									byte3 = readContinuationByte();
									codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
									if (codePoint >= 0x0800) {
										checkScalarValue(codePoint);
										return codePoint;
									} else {
										throw Error('Invalid continuation byte');
									}
								}

								// 4-byte sequence
								if ((byte1 & 0xF8) == 0xF0) {
									byte2 = readContinuationByte();
									byte3 = readContinuationByte();
									byte4 = readContinuationByte();
									codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
										(byte3 << 0x06) | byte4;
									if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
										return codePoint;
									}
								}

								throw Error('Invalid UTF-8 detected');
							}

							var byteArray;
							var byteCount;
							var byteIndex;

							function utf8decode(byteString) {
								byteArray = ucs2decode(byteString);
								byteCount = byteArray.length;
								byteIndex = 0;
								var codePoints = [];
								var tmp;
								while ((tmp = decodeSymbol()) !== false) {
									codePoints.push(tmp);
								}
								return ucs2encode(codePoints);
							}

							/*--------------------------------------------------------------------------*/

							var utf8 = {
								'version': '2.0.0',
								'encode': utf8encode,
								'decode': utf8decode
							};

							// Some AMD build optimizers, like r.js, check for specific condition patterns
							// like the following:
							if (
								typeof define == 'function' &&
								typeof define.amd == 'object' &&
								define.amd
							) {
								define(function() {
									return utf8;
								});
							} else if (freeExports && !freeExports.nodeType) {
								if (freeModule) { // in Node.js or RingoJS v0.8.0+
									freeModule.exports = utf8;
								} else { // in Narwhal or RingoJS v0.7.0-
									var object = {};
									var hasOwnProperty = object.hasOwnProperty;
									for (var key in utf8) {
										hasOwnProperty.call(utf8, key) && (freeExports[key] =
											utf8[key]);
									}
								}
							} else { // in Rhino or a web browser
								root.utf8 = utf8;
							}

						}(this));

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {}],
				32: [function(_dereq_, module, exports) {
					(function(global) {
						/**
						 * JSON parse.
						 *
						 * @see Based on jQuery#parseJSON (MIT) and JSON2
						 * @api private
						 */

						var rvalidchars = /^[\],:{}\s]*$/;
						var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
						var rvalidtokens =
							/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
						var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
						var rtrimLeft = /^\s+/;
						var rtrimRight = /\s+$/;

						module.exports = function parsejson(data) {
							if ('string' != typeof data || !data) {
								return null;
							}

							data = data.replace(rtrimLeft, '').replace(rtrimRight, '');

							// Attempt to parse using the native JSON parser first
							if (global.JSON && JSON.parse) {
								return JSON.parse(data);
							}

							if (rvalidchars.test(data.replace(rvalidescape, '@')
									.replace(rvalidtokens, ']')
									.replace(rvalidbraces, ''))) {
								return (new Function('return ' + data))();
							}
						};
					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {}],
				33: [function(_dereq_, module, exports) {
					/**
					 * Compiles a querystring
					 * Returns string representation of the object
					 *
					 * @param {Object}
					 * @api private
					 */

					exports.encode = function(obj) {
						var str = '';

						for (var i in obj) {
							if (obj.hasOwnProperty(i)) {
								if (str.length) str += '&';
								str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
							}
						}

						return str;
					};

					/**
					 * Parses a simple querystring into an object
					 *
					 * @param {String} qs
					 * @api private
					 */

					exports.decode = function(qs) {
						var qry = {};
						var pairs = qs.split('&');
						for (var i = 0, l = pairs.length; i < l; i++) {
							var pair = pairs[i].split('=');
							qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
						}
						return qry;
					};

				}, {}],
				34: [function(_dereq_, module, exports) {
					/**
					 * Parses an URI
					 *
					 * @author Steven Levithan <stevenlevithan.com> (MIT license)
					 * @api private
					 */

					var re =
						/^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;

					var parts = [
						'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host',
						'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
					];

					module.exports = function parseuri(str) {
						var src = str,
							b = str.indexOf('['),
							e = str.indexOf(']');

						if (b != -1 && e != -1) {
							str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str
								.substring(e, str.length);
						}

						var m = re.exec(str || ''),
							uri = {},
							i = 14;

						while (i--) {
							uri[parts[i]] = m[i] || '';
						}

						if (b != -1 && e != -1) {
							uri.source = src;
							uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g,
								':');
							uri.authority = uri.authority.replace('[', '').replace(']', '').replace(
								/;/g, ':');
							uri.ipv6uri = true;
						}

						return uri;
					};

				}, {}],
				35: [function(_dereq_, module, exports) {

					/**
					 * Module dependencies.
					 */

					var global = (function() {
						return this;
					})();

					/**
					 * WebSocket constructor.
					 */

					var WebSocket = global.WebSocket || global.MozWebSocket;

					/**
					 * Module exports.
					 */

					module.exports = WebSocket ? ws : null;

					/**
					 * WebSocket constructor.
					 *
					 * The third `opts` options object gets ignored in web browsers, since it's
					 * non-standard, and throws a TypeError if passed to the constructor.
					 * See: https://github.com/einaros/ws/issues/227
					 *
					 * @param {String} uri
					 * @param {Array} protocols (optional)
					 * @param {Object) opts (optional)
					 * @api public
					 */

					function ws(uri, protocols, opts) {
						var instance;
						console.log('new WebSocket' , uri)
						if (protocols) {
							instance = new WebSocket(uri, protocols);
						} else {
							instance = new WebSocket(uri);
						}
						return instance;
					}

					if (WebSocket) ws.prototype = WebSocket.prototype;

				}, {}],
				36: [function(_dereq_, module, exports) {
					(function(global) {

						/*
						 * Module requirements.
						 */

						var isArray = _dereq_('isarray');

						/**
						 * Module exports.
						 */

						module.exports = hasBinary;

						/**
						 * Checks for binary data.
						 *
						 * Right now only Buffer and ArrayBuffer are supported..
						 *
						 * @param {Object} anything
						 * @api public
						 */

						function hasBinary(data) {

							function _hasBinary(obj) {
								if (!obj) return false;

								if ((global.Buffer && global.Buffer.isBuffer(obj)) ||
									(global.ArrayBuffer && obj instanceof ArrayBuffer) ||
									(global.Blob && obj instanceof Blob) ||
									(global.File && obj instanceof File)
								) {
									return true;
								}

								if (isArray(obj)) {
									for (var i = 0; i < obj.length; i++) {
										if (_hasBinary(obj[i])) {
											return true;
										}
									}
								} else if (obj && 'object' == typeof obj) {
									if (obj.toJSON) {
										obj = obj.toJSON();
									}

									for (var key in obj) {
										if (Object.prototype.hasOwnProperty.call(obj, key) &&
											_hasBinary(obj[key])) {
											return true;
										}
									}
								}

								return false;
							}

							return _hasBinary(data);
						}

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"isarray": 37
				}],
				37: [function(_dereq_, module, exports) {
					module.exports = Array.isArray || function(arr) {
						return Object.prototype.toString.call(arr) == '[object Array]';
					};

				}, {}],
				38: [function(_dereq_, module, exports) {

					/**
					 * Module dependencies.
					 */

					var global = _dereq_('global');

					/**
					 * Module exports.
					 *
					 * Logic borrowed from Modernizr:
					 *
					 *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
					 */

					try {
						module.exports = 'XMLHttpRequest' in global &&
							'withCredentials' in new global.XMLHttpRequest();
					} catch (err) {
						// if XMLHttp support is disabled in IE then it will throw
						// when trying to create
						module.exports = false;
					}

				}, {
					"global": 39
				}],
				39: [function(_dereq_, module, exports) {

					/**
					 * Returns `this`. Execute this without a "context" (i.e. without it being
					 * attached to an object of the left-hand side), and `this` points to the
					 * "global" scope of the current JS execution.
					 */

					module.exports = (function() {
						return this;
					})();

				}, {}],
				40: [function(_dereq_, module, exports) {

					var indexOf = [].indexOf;

					module.exports = function(arr, obj) {
						if (indexOf) return arr.indexOf(obj);
						for (var i = 0; i < arr.length; ++i) {
							if (arr[i] === obj) return i;
						}
						return -1;
					};
				}, {}],
				41: [function(_dereq_, module, exports) {

					/**
					 * HOP ref.
					 */

					var has = Object.prototype.hasOwnProperty;

					/**
					 * Return own keys in `obj`.
					 *
					 * @param {Object} obj
					 * @return {Array}
					 * @api public
					 */

					exports.keys = Object.keys || function(obj) {
						var keys = [];
						for (var key in obj) {
							if (has.call(obj, key)) {
								keys.push(key);
							}
						}
						return keys;
					};

					/**
					 * Return own values in `obj`.
					 *
					 * @param {Object} obj
					 * @return {Array}
					 * @api public
					 */

					exports.values = function(obj) {
						var vals = [];
						for (var key in obj) {
							if (has.call(obj, key)) {
								vals.push(obj[key]);
							}
						}
						return vals;
					};

					/**
					 * Merge `b` into `a`.
					 *
					 * @param {Object} a
					 * @param {Object} b
					 * @return {Object} a
					 * @api public
					 */

					exports.merge = function(a, b) {
						for (var key in b) {
							if (has.call(b, key)) {
								a[key] = b[key];
							}
						}
						return a;
					};

					/**
					 * Return length of `obj`.
					 *
					 * @param {Object} obj
					 * @return {Number}
					 * @api public
					 */

					exports.length = function(obj) {
						return exports.keys(obj).length;
					};

					/**
					 * Check if `obj` is empty.
					 *
					 * @param {Object} obj
					 * @return {Boolean}
					 * @api public
					 */

					exports.isEmpty = function(obj) {
						return 0 == exports.length(obj);
					};
				}, {}],
				42: [function(_dereq_, module, exports) {
					/**
					 * Parses an URI
					 *
					 * @author Steven Levithan <stevenlevithan.com> (MIT license)
					 * @api private
					 */

					var re =
						/^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;

					var parts = [
						'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host',
						'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
					];

					module.exports = function parseuri(str) {
						var m = re.exec(str || ''),
							uri = {},
							i = 14;

						while (i--) {
							uri[parts[i]] = m[i] || '';
						}

						return uri;
					};

				}, {}],
				43: [function(_dereq_, module, exports) {
					(function(global) {
						/*global Blob,File*/

						/**
						 * Module requirements
						 */

						var isArray = _dereq_('isarray');
						var isBuf = _dereq_('./is-buffer');

						/**
						 * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.
						 * Anything with blobs or files should be fed through removeBlobs before coming
						 * here.
						 *
						 * @param {Object} packet - socket.io event packet
						 * @return {Object} with deconstructed packet and list of buffers
						 * @api public
						 */

						exports.deconstructPacket = function(packet) {
							var buffers = [];
							var packetData = packet.data;

							function _deconstructPacket(data) {
								if (!data) return data;

								if (isBuf(data)) {
									var placeholder = {
										_placeholder: true,
										num: buffers.length
									};
									buffers.push(data);
									return placeholder;
								} else if (isArray(data)) {
									var newData = new Array(data.length);
									for (var i = 0; i < data.length; i++) {
										newData[i] = _deconstructPacket(data[i]);
									}
									return newData;
								} else if ('object' == typeof data && !(data instanceof Date)) {
									var newData = {};
									for (var key in data) {
										newData[key] = _deconstructPacket(data[key]);
									}
									return newData;
								}
								return data;
							}

							var pack = packet;
							pack.data = _deconstructPacket(packetData);
							pack.attachments = buffers.length; // number of binary 'attachments'
							return {
								packet: pack,
								buffers: buffers
							};
						};

						/**
						 * Reconstructs a binary packet from its placeholder packet and buffers
						 *
						 * @param {Object} packet - event packet with placeholders
						 * @param {Array} buffers - binary buffers to put in placeholder positions
						 * @return {Object} reconstructed packet
						 * @api public
						 */

						exports.reconstructPacket = function(packet, buffers) {
							var curPlaceHolder = 0;

							function _reconstructPacket(data) {
								if (data && data._placeholder) {
									var buf = buffers[data
										.num
										]; // appropriate buffer (should be natural order anyway)
									return buf;
								} else if (isArray(data)) {
									for (var i = 0; i < data.length; i++) {
										data[i] = _reconstructPacket(data[i]);
									}
									return data;
								} else if (data && 'object' == typeof data) {
									for (var key in data) {
										data[key] = _reconstructPacket(data[key]);
									}
									return data;
								}
								return data;
							}

							packet.data = _reconstructPacket(packet.data);
							packet.attachments = undefined; // no longer useful
							return packet;
						};

						/**
						 * Asynchronously removes Blobs or Files from data via
						 * FileReader's readAsArrayBuffer method. Used before encoding
						 * data as msgpack. Calls callback with the blobless data.
						 *
						 * @param {Object} data
						 * @param {Function} callback
						 * @api private
						 */

						exports.removeBlobs = function(data, callback) {
							function _removeBlobs(obj, curKey, containingObject) {
								if (!obj) return obj;

								// convert any blob
								if ((global.Blob && obj instanceof Blob) ||
									(global.File && obj instanceof File)) {
									pendingBlobs++;

									// async filereader
									var fileReader = new FileReader();
									fileReader.onload =
										function() { // this.result == arraybuffer
											if (containingObject) {
												containingObject[curKey] = this.result;
											} else {
												bloblessData = this.result;
											}

											// if nothing pending its callback time
											if (!--pendingBlobs) {
												callback(bloblessData);
											}
										};

									fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer
								} else if (isArray(obj)) { // handle array
									for (var i = 0; i < obj.length; i++) {
										_removeBlobs(obj[i], i, obj);
									}
								} else if (obj && 'object' == typeof obj && !isBuf(
										obj)) { // and object
									for (var key in obj) {
										_removeBlobs(obj[key], key, obj);
									}
								}
							}

							var pendingBlobs = 0;
							var bloblessData = data;
							_removeBlobs(bloblessData);
							if (!pendingBlobs) {
								callback(bloblessData);
							}
						};

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {
					"./is-buffer": 45,
					"isarray": 46
				}],
				44: [function(_dereq_, module, exports) {

					/**
					 * Module dependencies.
					 */

					var debug = _dereq_('debug')('socket.io-parser');
					var json = _dereq_('json3');
					var isArray = _dereq_('isarray');
					var Emitter = _dereq_('component-emitter');
					var binary = _dereq_('./binary');
					var isBuf = _dereq_('./is-buffer');

					/**
					 * Protocol version.
					 *
					 * @api public
					 */

					exports.protocol = 4;

					/**
					 * Packet types.
					 *
					 * @api public
					 */

					exports.types = [
						'CONNECT',
						'DISCONNECT',
						'EVENT',
						'BINARY_EVENT',
						'ACK',
						'BINARY_ACK',
						'ERROR'
					];

					/**
					 * Packet type `connect`.
					 *
					 * @api public
					 */

					exports.CONNECT = 0;

					/**
					 * Packet type `disconnect`.
					 *
					 * @api public
					 */

					exports.DISCONNECT = 1;

					/**
					 * Packet type `event`.
					 *
					 * @api public
					 */

					exports.EVENT = 2;

					/**
					 * Packet type `ack`.
					 *
					 * @api public
					 */

					exports.ACK = 3;

					/**
					 * Packet type `error`.
					 *
					 * @api public
					 */

					exports.ERROR = 4;

					/**
					 * Packet type 'binary event'
					 *
					 * @api public
					 */

					exports.BINARY_EVENT = 5;

					/**
					 * Packet type `binary ack`. For acks with binary arguments.
					 *
					 * @api public
					 */

					exports.BINARY_ACK = 6;

					/**
					 * Encoder constructor.
					 *
					 * @api public
					 */

					exports.Encoder = Encoder;

					/**
					 * Decoder constructor.
					 *
					 * @api public
					 */

					exports.Decoder = Decoder;

					/**
					 * A socket.io Encoder instance
					 *
					 * @api public
					 */

					function Encoder() {}

					/**
					 * Encode a packet as a single string if non-binary, or as a
					 * buffer sequence, depending on packet type.
					 *
					 * @param {Object} obj - packet object
					 * @param {Function} callback - function to handle encodings (likely engine.write)
					 * @return Calls callback with Array of encodings
					 * @api public
					 */

					Encoder.prototype.encode = function(obj, callback) {
						debug('encoding packet %j', obj);

						if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
							encodeAsBinary(obj, callback);
						} else {
							var encoding = encodeAsString(obj);
							callback([encoding]);
						}
					};

					/**
					 * Encode packet as string.
					 *
					 * @param {Object} packet
					 * @return {String} encoded
					 * @api private
					 */

					function encodeAsString(obj) {
						var str = '';
						var nsp = false;

						// first is type
						str += obj.type;

						// attachments if we have them
						if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
							str += obj.attachments;
							str += '-';
						}

						// if we have a namespace other than `/`
						// we append it followed by a comma `,`
						if (obj.nsp && '/' != obj.nsp) {
							nsp = true;
							str += obj.nsp;
						}

						// immediately followed by the id
						if (null != obj.id) {
							if (nsp) {
								str += ',';
								nsp = false;
							}
							str += obj.id;
						}

						// json data
						if (null != obj.data) {
							if (nsp) str += ',';
							str += json.stringify(obj.data);
						}

						debug('encoded %j as %s', obj, str);
						return str;
					}

					/**
					 * Encode packet as 'buffer sequence' by removing blobs, and
					 * deconstructing packet into object with placeholders and
					 * a list of buffers.
					 *
					 * @param {Object} packet
					 * @return {Buffer} encoded
					 * @api private
					 */

					function encodeAsBinary(obj, callback) {

						function writeEncoding(bloblessData) {
							var deconstruction = binary.deconstructPacket(bloblessData);
							var pack = encodeAsString(deconstruction.packet);
							var buffers = deconstruction.buffers;

							buffers.unshift(pack); // add packet info to beginning of data list
							callback(buffers); // write all the buffers
						}

						binary.removeBlobs(obj, writeEncoding);
					}

					/**
					 * A socket.io Decoder instance
					 *
					 * @return {Object} decoder
					 * @api public
					 */

					function Decoder() {
						this.reconstructor = null;
					}

					/**
					 * Mix in `Emitter` with Decoder.
					 */

					Emitter(Decoder.prototype);

					/**
					 * Decodes an ecoded packet string into packet JSON.
					 *
					 * @param {String} obj - encoded packet
					 * @return {Object} packet
					 * @api public
					 */

					Decoder.prototype.add = function(obj) {
						var packet;
						if ('string' == typeof obj) {
							packet = decodeString(obj);
							if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet
								.type) { // binary packet's json
								this.reconstructor = new BinaryReconstructor(packet);

								// no attachments, labeled binary but no binary data to follow
								if (this.reconstructor.reconPack.attachments === 0) {
									this.emit('decoded', packet);
								}
							} else { // non-binary full packet
								this.emit('decoded', packet);
							}
						} else if (isBuf(obj) || obj.base64) { // raw binary data
							if (!this.reconstructor) {
								throw new Error('got binary data when not reconstructing a packet');
							} else {
								packet = this.reconstructor.takeBinaryData(obj);
								if (packet) { // received final buffer
									this.reconstructor = null;
									this.emit('decoded', packet);
								}
							}
						} else {
							throw new Error('Unknown type: ' + obj);
						}
					};

					/**
					 * Decode a packet String (JSON data)
					 *
					 * @param {String} str
					 * @return {Object} packet
					 * @api private
					 */

					function decodeString(str) {
						var p = {};
						var i = 0;

						// look up type
						p.type = Number(str.charAt(0));
						if (null == exports.types[p.type]) return error();

						// look up attachments if type binary
						if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {
							var buf = '';
							while (str.charAt(++i) != '-') {
								buf += str.charAt(i);
								if (i == str.length) break;
							}
							if (buf != Number(buf) || str.charAt(i) != '-') {
								throw new Error('Illegal attachments');
							}
							p.attachments = Number(buf);
						}

						// look up namespace (if any)
						if ('/' == str.charAt(i + 1)) {
							p.nsp = '';
							while (++i) {
								var c = str.charAt(i);
								if (',' == c) break;
								p.nsp += c;
								if (i == str.length) break;
							}
						} else {
							p.nsp = '/';
						}

						// look up id
						var next = str.charAt(i + 1);
						if ('' !== next && Number(next) == next) {
							p.id = '';
							while (++i) {
								var c = str.charAt(i);
								if (null == c || Number(c) != c) {
									--i;
									break;
								}
								p.id += str.charAt(i);
								if (i == str.length) break;
							}
							p.id = Number(p.id);
						}

						// look up json data
						if (str.charAt(++i)) {
							try {
								p.data = json.parse(str.substr(i));
							} catch (e) {
								return error();
							}
						}

						debug('decoded %s as %j', str, p);
						return p;
					}

					/**
					 * Deallocates a parser's resources
					 *
					 * @api public
					 */

					Decoder.prototype.destroy = function() {
						if (this.reconstructor) {
							this.reconstructor.finishedReconstruction();
						}
					};

					/**
					 * A manager of a binary event's 'buffer sequence'. Should
					 * be constructed whenever a packet of type BINARY_EVENT is
					 * decoded.
					 *
					 * @param {Object} packet
					 * @return {BinaryReconstructor} initialized reconstructor
					 * @api private
					 */

					function BinaryReconstructor(packet) {
						this.reconPack = packet;
						this.buffers = [];
					}

					/**
					 * Method to be called when binary data received from connection
					 * after a BINARY_EVENT packet.
					 *
					 * @param {Buffer | ArrayBuffer} binData - the raw binary data received
					 * @return {null | Object} returns null if more binary data is expected or
					 *   a reconstructed packet object if all buffers have been received.
					 * @api private
					 */

					BinaryReconstructor.prototype.takeBinaryData = function(binData) {
						this.buffers.push(binData);
						if (this.buffers.length == this.reconPack
							.attachments) { // done with buffer list
							var packet = binary.reconstructPacket(this.reconPack, this.buffers);
							this.finishedReconstruction();
							return packet;
						}
						return null;
					};

					/**
					 * Cleans up binary packet reconstruction variables.
					 *
					 * @api private
					 */

					BinaryReconstructor.prototype.finishedReconstruction = function() {
						this.reconPack = null;
						this.buffers = [];
					};

					function error(data) {
						return {
							type: exports.ERROR,
							data: 'parser error'
						};
					}

				}, {
					"./binary": 43,
					"./is-buffer": 45,
					"component-emitter": 9,
					"debug": 10,
					"isarray": 46,
					"json3": 47
				}],
				45: [function(_dereq_, module, exports) {
					(function(global) {

						module.exports = isBuf;

						/**
						 * Returns true if obj is a buffer or an arraybuffer.
						 *
						 * @api private
						 */

						function isBuf(obj) {
							return (global.Buffer && global.Buffer.isBuffer(obj)) ||
								(global.ArrayBuffer && obj instanceof ArrayBuffer);
						}

					}).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ?
						window : {})
				}, {}],
				46: [function(_dereq_, module, exports) {
					module.exports = _dereq_(37)
				}, {}],
				47: [function(_dereq_, module, exports) {
					/*! JSON v3.2.6 | http://bestiejs.github.io/json3 | Copyright 2012-2013, Kit Cambridge | http://kit.mit-license.org */
					;
					(function(window) {
						// Convenience aliases.
						var getClass = {}.toString,
							isProperty, forEach, undef;

						// Detect the `define` function exposed by asynchronous module loaders. The
						// strict `define` check is necessary for compatibility with `r.js`.
						var isLoader = typeof define === "function" && define.amd;

						// Detect native implementations.
						var nativeJSON = typeof JSON == "object" && JSON;

						// Set up the JSON 3 namespace, preferring the CommonJS `exports` object if
						// available.
						var JSON3 = typeof exports == "object" && exports && !exports.nodeType &&
							exports;

						if (JSON3 && nativeJSON) {
							// Explicitly delegate to the native `stringify` and `parse`
							// implementations in CommonJS environments.
							JSON3.stringify = nativeJSON.stringify;
							JSON3.parse = nativeJSON.parse;
						} else {
							// Export for web browsers, JavaScript engines, and asynchronous module
							// loaders, using the global `JSON` object if available.
							JSON3 = window.JSON = nativeJSON || {};
						}

						// Test the `Date#getUTC*` methods. Based on work by @Yaffle.
						var isExtended = new Date(-3509827334573292);
						try {
							// The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
							// results for certain dates in Opera >= 10.53.
							isExtended = isExtended.getUTCFullYear() == -109252 && isExtended
								.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
								// Safari < 2.0.2 stores the internal millisecond time value correctly,
								// but clips the values returned by the date methods to the range of
								// signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
								isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() ==
								37 && isExtended.getUTCSeconds() == 6 && isExtended
								.getUTCMilliseconds() == 708;
						} catch (exception) {}

						// Internal: Determines whether the native `JSON.stringify` and `parse`
						// implementations are spec-compliant. Based on work by Ken Snyder.
						function has(name) {
							if (has[name] !== undef) {
								// Return cached feature test result.
								return has[name];
							}

							var isSupported;
							if (name == "bug-string-char-index") {
								// IE <= 7 doesn't support accessing string characters using square
								// bracket notation. IE 8 only supports this for primitives.
								isSupported = "a" [0] != "a";
							} else if (name == "json") {
								// Indicates whether both `JSON.stringify` and `JSON.parse` are
								// supported.
								isSupported = has("json-stringify") && has("json-parse");
							} else {
								var value, serialized =
									'{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
								// Test `JSON.stringify`.
								if (name == "json-stringify") {
									var stringify = JSON3.stringify,
										stringifySupported = typeof stringify == "function" &&
										isExtended;
									if (stringifySupported) {
										// A test function object with a custom `toJSON` method.
										(value = function() {
											return 1;
										}).toJSON = value;
										try {
											stringifySupported =
												// Firefox 3.1b1 and b2 serialize string, number, and boolean
												// primitives as object literals.
												stringify(0) === "0" &&
												// FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
												// literals.
												stringify(new Number()) === "0" &&
												stringify(new String()) == '""' &&
												// FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
												// does not define a canonical JSON representation (this applies to
												// objects with `toJSON` properties as well, *unless* they are nested
												// within an object or array).
												stringify(getClass) === undef &&
												// IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
												// FF 3.1b3 pass this test.
												stringify(undef) === undef &&
												// Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
												// respectively, if the value is omitted entirely.
												stringify() === undef &&
												// FF 3.1b1, 2 throw an error if the given value is not a number,
												// string, array, object, Boolean, or `null` literal. This applies to
												// objects with custom `toJSON` methods as well, unless they are nested
												// inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
												// methods entirely.
												stringify(value) === "1" &&
												stringify([value]) == "[1]" &&
												// Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
												// `"[null]"`.
												stringify([undef]) == "[null]" &&
												// YUI 3.0.0b1 fails to serialize `null` literals.
												stringify(null) == "null" &&
												// FF 3.1b1, 2 halts serialization if an array contains a function:
												// `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
												// elides non-JSON values from objects and arrays, unless they
												// define custom `toJSON` methods.
												stringify([undef, getClass, null]) ==
												"[null,null,null]" &&
												// Simple serialization test. FF 3.1b1 uses Unicode escape sequences
												// where character escape codes are expected (e.g., `\b` => `\u0008`).
												stringify({
													"a": [value, true, false, null,
														"\x00\b\n\f\r\t"
													]
												}) == serialized &&
												// FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
												stringify(null, value) === "1" &&
												stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
												// JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
												// serialize extended years.
												stringify(new Date(-8.64e15)) ==
												'"-271821-04-20T00:00:00.000Z"' &&
												// The milliseconds are optional in ES 5, but required in 5.1.
												stringify(new Date(8.64e15)) ==
												'"+275760-09-13T00:00:00.000Z"' &&
												// Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
												// four-digit years instead of six-digit years. Credits: @Yaffle.
												stringify(new Date(-621987552e5)) ==
												'"-000001-01-01T00:00:00.000Z"' &&
												// Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
												// values less than 1000. Credits: @Yaffle.
												stringify(new Date(-1)) ==
												'"1969-12-31T23:59:59.999Z"';
										} catch (exception) {
											stringifySupported = false;
										}
									}
									isSupported = stringifySupported;
								}
								// Test `JSON.parse`.
								if (name == "json-parse") {
									var parse = JSON3.parse;
									if (typeof parse == "function") {
										try {
											// FF 3.1b1, b2 will throw an exception if a bare literal is provided.
											// Conforming implementations should also coerce the initial argument to
											// a string prior to parsing.
											if (parse("0") === 0 && !parse(false)) {
												// Simple parsing test.
												value = parse(serialized);
												var parseSupported = value["a"].length == 5 &&
													value["a"][0] === 1;
												if (parseSupported) {
													try {
														// Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
														parseSupported = !parse('"\t"');
													} catch (exception) {}
													if (parseSupported) {
														try {
															// FF 4.0 and 4.0.1 allow leading `+` signs and leading
															// decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
															// certain octal literals.
															parseSupported = parse("01") !== 1;
														} catch (exception) {}
													}
													if (parseSupported) {
														try {
															// FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
															// points. These environments, along with FF 3.1b1 and 2,
															// also allow trailing commas in JSON objects and arrays.
															parseSupported = parse("1.") !== 1;
														} catch (exception) {}
													}
												}
											}
										} catch (exception) {
											parseSupported = false;
										}
									}
									isSupported = parseSupported;
								}
							}
							return has[name] = !!isSupported;
						}

						if (!has("json")) {
							// Common `[[Class]]` name aliases.
							var functionClass = "[object Function]";
							var dateClass = "[object Date]";
							var numberClass = "[object Number]";
							var stringClass = "[object String]";
							var arrayClass = "[object Array]";
							var booleanClass = "[object Boolean]";

							// Detect incomplete support for accessing string characters by index.
							var charIndexBuggy = has("bug-string-char-index");

							// Define additional utility methods if the `Date` methods are buggy.
							if (!isExtended) {
								var floor = Math.floor;
								// A mapping between the months of the year and the number of days between
								// January 1st and the first of the respective month.
								var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304,
									334
								];
								// Internal: Calculates the number of days between the Unix epoch and the
								// first day of the given month.
								var getDay = function(year, month) {
									return Months[month] + 365 * (year - 1970) + floor((year -
										1969 + (month = +(month > 1))) / 4) - floor((year -
										1901 + month) / 100) + floor((year - 1601 + month) /
										400);
								};
							}

							// Internal: Determines if a property is a direct property of the given
							// object. Delegates to the native `Object#hasOwnProperty` method.
							if (!(isProperty = {}.hasOwnProperty)) {
								isProperty = function(property) {
									var members = {},
										constructor;
									if ((members.__proto__ = null, members.__proto__ = {
											// The *proto* property cannot be set multiple times in recent
											// versions of Firefox and SeaMonkey.
											"toString": 1
										}, members).toString != getClass) {
										// Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
										// supports the mutable *proto* property.
										isProperty = function(property) {
											// Capture and break the object's prototype chain (see section 8.6.2
											// of the ES 5.1 spec). The parenthesized expression prevents an
											// unsafe transformation by the Closure Compiler.
											var original = this.__proto__,
												result = property in (this.__proto__ = null,
													this);
											// Restore the original prototype chain.
											this.__proto__ = original;
											return result;
										};
									} else {
										// Capture a reference to the top-level `Object` constructor.
										constructor = members.constructor;
										// Use the `constructor` property to simulate `Object#hasOwnProperty` in
										// other environments.
										isProperty = function(property) {
											var parent = (this.constructor || constructor)
												.prototype;
											return property in this && !(property in
												parent && this[property] === parent[
													property]);
										};
									}
									members = null;
									return isProperty.call(this, property);
								};
							}

							// Internal: A set of primitive types used by `isHostType`.
							var PrimitiveTypes = {
								'boolean': 1,
								'number': 1,
								'string': 1,
								'undefined': 1
							};

							// Internal: Determines if the given object `property` value is a
							// non-primitive.
							var isHostType = function(object, property) {
								var type = typeof object[property];
								return type == 'object' ? !!object[property] : !PrimitiveTypes[
									type];
							};

							// Internal: Normalizes the `for...in` iteration algorithm across
							// environments. Each enumerated key is yielded to a `callback` function.
							forEach = function(object, callback) {
								var size = 0,
									Properties, members, property;

								// Tests for bugs in the current environment's `for...in` algorithm. The
								// `valueOf` property inherits the non-enumerable flag from
								// `Object.prototype` in older versions of IE, Netscape, and Mozilla.
								(Properties = function() {
									this.valueOf = 0;
								}).prototype.valueOf = 0;

								// Iterate over a new instance of the `Properties` class.
								members = new Properties();
								for (property in members) {
									// Ignore all properties inherited from `Object.prototype`.
									if (isProperty.call(members, property)) {
										size++;
									}
								}
								Properties = members = null;

								// Normalize the iteration algorithm.
								if (!size) {
									// A list of non-enumerable properties inherited from `Object.prototype`.
									members = ["valueOf", "toString", "toLocaleString",
										"propertyIsEnumerable", "isPrototypeOf",
										"hasOwnProperty", "constructor"
									];
									// IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
									// properties.
									forEach = function(object, callback) {
										var isFunction = getClass.call(object) ==
											functionClass,
											property, length;
										var hasProperty = !isFunction && typeof object
											.constructor != 'function' && isHostType(object,
												'hasOwnProperty') ? object.hasOwnProperty :
											isProperty;
										for (property in object) {
											// Gecko <= 1.0 enumerates the `prototype` property of functions under
											// certain conditions; IE does not.
											if (!(isFunction && property == "prototype") &&
												hasProperty.call(object, property)) {
												callback(property);
											}
										}
										// Manually invoke the callback for each non-enumerable property.
										for (length = members.length; property = members[--
												length]; hasProperty.call(object,
												property) && callback(property));
									};
								} else if (size == 2) {
									// Safari <= 2.0.4 enumerates shadowed properties twice.
									forEach = function(object, callback) {
										// Create a set of iterated properties.
										var members = {},
											isFunction = getClass.call(object) ==
											functionClass,
											property;
										for (property in object) {
											// Store each property name to prevent double enumeration. The
											// `prototype` property of functions is not enumerated due to cross-
											// environment inconsistencies.
											if (!(isFunction && property == "prototype") &&
												!isProperty.call(members, property) && (
													members[property] = 1) && isProperty
												.call(object, property)) {
												callback(property);
											}
										}
									};
								} else {
									// No bugs detected; use the standard `for...in` algorithm.
									forEach = function(object, callback) {
										var isFunction = getClass.call(object) ==
											functionClass,
											property, isConstructor;
										for (property in object) {
											if (!(isFunction && property == "prototype") &&
												isProperty.call(object, property) && !(
													isConstructor = property ===
													"constructor")) {
												callback(property);
											}
										}
										// Manually invoke the callback for the `constructor` property due to
										// cross-environment inconsistencies.
										if (isConstructor || isProperty.call(object, (
												property = "constructor"))) {
											callback(property);
										}
									};
								}
								return forEach(object, callback);
							};

							// Public: Serializes a JavaScript `value` as a JSON string. The optional
							// `filter` argument may specify either a function that alters how object and
							// array members are serialized, or an array of strings and numbers that
							// indicates which properties should be serialized. The optional `width`
							// argument may be either a string or number that specifies the indentation
							// level of the output.
							if (!has("json-stringify")) {
								// Internal: A map of control characters and their escaped equivalents.
								var Escapes = {
									92: "\\\\",
									34: '\\"',
									8: "\\b",
									12: "\\f",
									10: "\\n",
									13: "\\r",
									9: "\\t"
								};

								// Internal: Converts `value` into a zero-padded string such that its
								// length is at least equal to `width`. The `width` must be <= 6.
								var leadingZeroes = "000000";
								var toPaddedString = function(width, value) {
									// The `|| 0` expression is necessary to work around a bug in
									// Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
									return (leadingZeroes + (value || 0)).slice(-width);
								};

								// Internal: Double-quotes a string `value`, replacing all ASCII control
								// characters (characters with code unit values between 0 and 31) with
								// their escaped equivalents. This is an implementation of the
								// `Quote(value)` operation defined in ES 5.1 section 15.12.3.
								var unicodePrefix = "\\u00";
								var quote = function(value) {
									var result = '"',
										index = 0,
										length = value.length,
										isLarge = length > 10 && charIndexBuggy,
										symbols;
									if (isLarge) {
										symbols = value.split("");
									}
									for (; index < length; index++) {
										var charCode = value.charCodeAt(index);
										// If the character is a control character, append its Unicode or
										// shorthand escape sequence; otherwise, append the character as-is.
										switch (charCode) {
											case 8:
											case 9:
											case 10:
											case 12:
											case 13:
											case 34:
											case 92:
												result += Escapes[charCode];
												break;
											default:
												if (charCode < 32) {
													result += unicodePrefix + toPaddedString(2,
														charCode.toString(16));
													break;
												}
												result += isLarge ? symbols[index] :
													charIndexBuggy ? value.charAt(index) :
													value[index];
										}
									}
									return result + '"';
								};

								// Internal: Recursively serializes an object. Implements the
								// `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
								var serialize = function(property, object, callback, properties,
									whitespace, indentation, stack) {
									var value, className, year, month, date, time, hours,
										minutes, seconds, milliseconds, results, element, index,
										length, prefix, result;
									try {
										// Necessary for host object support.
										value = object[property];
									} catch (exception) {}
									if (typeof value == "object" && value) {
										className = getClass.call(value);
										if (className == dateClass && !isProperty.call(value,
												"toJSON")) {
											if (value > -1 / 0 && value < 1 / 0) {
												// Dates are serialized according to the `Date#toJSON` method
												// specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
												// for the ISO 8601 date time string format.
												if (getDay) {
													// Manually compute the year, month, date, hours, minutes,
													// seconds, and milliseconds if the `getUTC*` methods are
													// buggy. Adapted from @Yaffle's `date-shim` project.
													date = floor(value / 864e5);
													for (year = floor(date / 365.2425) + 1970 -
														1; getDay(year + 1, 0) <= date; year++);
													for (month = floor((date - getDay(year,
															0)) / 30.42); getDay(year, month +
															1) <= date; month++);
													date = 1 + date - getDay(year, month);
													// The `time` value specifies the time within the day (see ES
													// 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
													// to compute `A modulo B`, as the `%` operator does not
													// correspond to the `modulo` operation for negative numbers.
													time = (value % 864e5 + 864e5) % 864e5;
													// The hours, minutes, seconds, and milliseconds are obtained by
													// decomposing the time within the day. See section 15.9.1.10.
													hours = floor(time / 36e5) % 24;
													minutes = floor(time / 6e4) % 60;
													seconds = floor(time / 1e3) % 60;
													milliseconds = time % 1e3;
												} else {
													year = value.getUTCFullYear();
													month = value.getUTCMonth();
													date = value.getUTCDate();
													hours = value.getUTCHours();
													minutes = value.getUTCMinutes();
													seconds = value.getUTCSeconds();
													milliseconds = value.getUTCMilliseconds();
												}
												// Serialize extended years correctly.
												value = (year <= 0 || year >= 1e4 ? (year < 0 ?
															"-" : "+") + toPaddedString(6,
															year < 0 ? -year : year) :
														toPaddedString(4, year)) +
													"-" + toPaddedString(2, month + 1) + "-" +
													toPaddedString(2, date) +
													// Months, dates, hours, minutes, and seconds should have two
													// digits; milliseconds should have three.
													"T" + toPaddedString(2, hours) + ":" +
													toPaddedString(2, minutes) + ":" +
													toPaddedString(2, seconds) +
													// Milliseconds are optional in ES 5.0, but required in 5.1.
													"." + toPaddedString(3, milliseconds) + "Z";
											} else {
												value = null;
											}
										} else if (typeof value.toJSON == "function" && ((
													className != numberClass && className !=
													stringClass && className != arrayClass) ||
												isProperty.call(value, "toJSON"))) {
											// Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
											// `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
											// ignores all `toJSON` methods on these objects unless they are
											// defined directly on an instance.
											value = value.toJSON(property);
										}
									}
									if (callback) {
										// If a replacement function was provided, call it to obtain the value
										// for serialization.
										value = callback.call(object, property, value);
									}
									if (value === null) {
										return "null";
									}
									className = getClass.call(value);
									if (className == booleanClass) {
										// Booleans are represented literally.
										return "" + value;
									} else if (className == numberClass) {
										// JSON numbers must be finite. `Infinity` and `NaN` are serialized as
										// `"null"`.
										return value > -1 / 0 && value < 1 / 0 ? "" + value :
											"null";
									} else if (className == stringClass) {
										// Strings are double-quoted and escaped.
										return quote("" + value);
									}
									// Recursively serialize objects and arrays.
									if (typeof value == "object") {
										// Check for cyclic structures. This is a linear search; performance
										// is inversely proportional to the number of unique nested objects.
										for (length = stack.length; length--;) {
											if (stack[length] === value) {
												// Cyclic structures cannot be serialized by `JSON.stringify`.
												throw TypeError();
											}
										}
										// Add the object to the stack of traversed objects.
										stack.push(value);
										results = [];
										// Save the current indentation level and indent one additional level.
										prefix = indentation;
										indentation += whitespace;
										if (className == arrayClass) {
											// Recursively serialize array elements.
											for (index = 0, length = value.length; index <
												length; index++) {
												element = serialize(index, value, callback,
													properties, whitespace, indentation,
													stack);
												results.push(element === undef ? "null" :
													element);
											}
											result = results.length ? (whitespace ? "[\n" +
												indentation + results.join(",\n" +
													indentation) + "\n" + prefix + "]" : (
													"[" + results.join(",") + "]")) : "[]";
										} else {
											// Recursively serialize object members. Members are selected from
											// either a user-specified list of property names, or the object
											// itself.
											forEach(properties || value, function(property) {
												var element = serialize(property, value,
													callback, properties,
													whitespace, indentation, stack);
												if (element !== undef) {
													// According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
													// is not the empty string, let `member` {quote(property) + ":"}
													// be the concatenation of `member` and the `space` character."
													// The "`space` character" refers to the literal space
													// character, not the `space` {width} argument provided to
													// `JSON.stringify`.
													results.push(quote(property) + ":" +
														(whitespace ? " " : "") +
														element);
												}
											});
											result = results.length ? (whitespace ? "{\n" +
												indentation + results.join(",\n" +
													indentation) + "\n" + prefix + "}" : (
													"{" + results.join(",") + "}")) : "{}";
										}
										// Remove the object from the traversed object stack.
										stack.pop();
										return result;
									}
								};

								// Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
								JSON3.stringify = function(source, filter, width) {
									var whitespace, callback, properties, className;
									if (typeof filter == "function" || typeof filter ==
										"object" && filter) {
										if ((className = getClass.call(filter)) ==
											functionClass) {
											callback = filter;
										} else if (className == arrayClass) {
											// Convert the property names array into a makeshift set.
											properties = {};
											for (var index = 0, length = filter.length,
													value; index < length; value = filter[
													index++],
												((className = getClass.call(value)),
													className == stringClass || className ==
													numberClass) && (properties[value] = 1));
										}
									}
									if (width) {
										if ((className = getClass.call(width)) == numberClass) {
											// Convert the `width` to an integer and create a string containing
											// `width` number of space characters.
											if ((width -= width % 1) > 0) {
												for (whitespace = "", width > 10 && (width =
														10); whitespace.length <
													width; whitespace += " ");
											}
										} else if (className == stringClass) {
											whitespace = width.length <= 10 ? width : width
												.slice(0, 10);
										}
									}
									// Opera <= 7.54u2 discards the values associated with empty string keys
									// (`""`) only if they are used directly within an object member list
									// (e.g., `!("" in { "": 1})`).
									return serialize("", (value = {}, value[""] = source,
											value), callback, properties, whitespace, "",
									[]);
								};
							}

							// Public: Parses a JSON source string.
							if (!has("json-parse")) {
								var fromCharCode = String.fromCharCode;

								// Internal: A map of escaped control characters and their unescaped
								// equivalents.
								var Unescapes = {
									92: "\\",
									34: '"',
									47: "/",
									98: "\b",
									116: "\t",
									110: "\n",
									102: "\f",
									114: "\r"
								};

								// Internal: Stores the parser state.
								var Index, Source;

								// Internal: Resets the parser state and throws a `SyntaxError`.
								var abort = function() {
									Index = Source = null;
									throw SyntaxError();
								};

								// Internal: Returns the next token, or `"$"` if the parser has reached
								// the end of the source string. A token may be a string, number, `null`
								// literal, or Boolean literal.
								var lex = function() {
									var source = Source,
										length = source.length,
										value, begin, position, isSigned, charCode;
									while (Index < length) {
										charCode = source.charCodeAt(Index);
										switch (charCode) {
											case 9:
											case 10:
											case 13:
											case 32:
												// Skip whitespace tokens, including tabs, carriage returns, line
												// feeds, and space characters.
												Index++;
												break;
											case 123:
											case 125:
											case 91:
											case 93:
											case 58:
											case 44:
												// Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
												// the current position.
												value = charIndexBuggy ? source.charAt(Index) :
													source[Index];
												Index++;
												return value;
											case 34:
												// `"` delimits a JSON string; advance to the next character and
												// begin parsing the string. String tokens are prefixed with the
												// sentinel `@` character to distinguish them from punctuators and
												// end-of-string tokens.
												for (value = "@", Index++; Index < length;) {
													charCode = source.charCodeAt(Index);
													if (charCode < 32) {
														// Unescaped ASCII control characters (those with a code unit
														// less than the space character) are not permitted.
														abort();
													} else if (charCode == 92) {
														// A reverse solidus (`\`) marks the beginning of an escaped
														// control character (including `"`, `\`, and `/`) or Unicode
														// escape sequence.
														charCode = source.charCodeAt(++Index);
														switch (charCode) {
															case 92:
															case 34:
															case 47:
															case 98:
															case 116:
															case 110:
															case 102:
															case 114:
																// Revive escaped control characters.
																value += Unescapes[charCode];
																Index++;
																break;
															case 117:
																// `\u` marks the beginning of a Unicode escape sequence.
																// Advance to the first character and validate the
																// four-digit code point.
																begin = ++Index;
																for (position = Index +
																	4; Index < position; Index++
																) {
																	charCode = source
																		.charCodeAt(Index);
																	// A valid sequence comprises four hexdigits (case-
																	// insensitive) that form a single hexadecimal value.
																	if (!(charCode >= 48 &&
																			charCode <= 57 ||
																			charCode >= 97 &&
																			charCode <= 102 ||
																			charCode >= 65 &&
																			charCode <= 70)) {
																		// Invalid Unicode escape sequence.
																		abort();
																	}
																}
																// Revive the escaped character.
																value += fromCharCode("0x" +
																	source.slice(begin,
																		Index));
																break;
															default:
																// Invalid escape sequence.
																abort();
														}
													} else {
														if (charCode == 34) {
															// An unescaped double-quote character marks the end of the
															// string.
															break;
														}
														charCode = source.charCodeAt(Index);
														begin = Index;
														// Optimize for the common case where a string is valid.
														while (charCode >= 32 && charCode !=
															92 && charCode != 34) {
															charCode = source.charCodeAt(++
																Index);
														}
														// Append the string as-is.
														value += source.slice(begin, Index);
													}
												}
												if (source.charCodeAt(Index) == 34) {
													// Advance to the next character and return the revived string.
													Index++;
													return value;
												}
												// Unterminated string.
												abort();
											default:
												// Parse numbers and literals.
												begin = Index;
												// Advance past the negative sign, if one is specified.
												if (charCode == 45) {
													isSigned = true;
													charCode = source.charCodeAt(++Index);
												}
												// Parse an integer or floating-point value.
												if (charCode >= 48 && charCode <= 57) {
													// Leading zeroes are interpreted as octal literals.
													if (charCode == 48 && ((charCode = source
																.charCodeAt(Index + 1)),
															charCode >= 48 && charCode <= 57)) {
														// Illegal octal literal.
														abort();
													}
													isSigned = false;
													// Parse the integer component.
													for (; Index < length && ((charCode = source
																.charCodeAt(Index)), charCode >=
															48 && charCode <= 57); Index++);
													// Floats cannot contain a leading decimal point; however, this
													// case is already accounted for by the parser.
													if (source.charCodeAt(Index) == 46) {
														position = ++Index;
														// Parse the decimal component.
														for (; position < length && ((charCode =
																	source.charCodeAt(position)
																), charCode >= 48 &&
																charCode <= 57); position++);
														if (position == Index) {
															// Illegal trailing decimal.
															abort();
														}
														Index = position;
													}
													// Parse exponents. The `e` denoting the exponent is
													// case-insensitive.
													charCode = source.charCodeAt(Index);
													if (charCode == 101 || charCode == 69) {
														charCode = source.charCodeAt(++Index);
														// Skip past the sign following the exponent, if one is
														// specified.
														if (charCode == 43 || charCode == 45) {
															Index++;
														}
														// Parse the exponential component.
														for (position = Index; position <
															length && ((charCode = source
																	.charCodeAt(position)),
																charCode >= 48 && charCode <= 57
															); position++);
														if (position == Index) {
															// Illegal empty exponent.
															abort();
														}
														Index = position;
													}
													// Coerce the parsed value to a JavaScript number.
													return +source.slice(begin, Index);
												}
												// A negative sign may only precede numbers.
												if (isSigned) {
													abort();
												}
												// `true`, `false`, and `null` literals.
												if (source.slice(Index, Index + 4) == "true") {
													Index += 4;
													return true;
												} else if (source.slice(Index, Index + 5) ==
													"false") {
													Index += 5;
													return false;
												} else if (source.slice(Index, Index + 4) ==
													"null") {
													Index += 4;
													return null;
												}
												// Unrecognized token.
												abort();
										}
									}
									// Return the sentinel `$` character if the parser has reached the end
									// of the source string.
									return "$";
								};

								// Internal: Parses a JSON `value` token.
								var get = function(value) {
									var results, hasMembers;
									if (value == "$") {
										// Unexpected end of input.
										abort();
									}
									if (typeof value == "string") {
										if ((charIndexBuggy ? value.charAt(0) : value[0]) ==
											"@") {
											// Remove the sentinel `@` character.
											return value.slice(1);
										}
										// Parse object and array literals.
										if (value == "[") {
											// Parses a JSON array, returning a new JavaScript array.
											results = [];
											for (;; hasMembers || (hasMembers = true)) {
												value = lex();
												// A closing square bracket marks the end of the array literal.
												if (value == "]") {
													break;
												}
												// If the array literal contains elements, the current token
												// should be a comma separating the previous element from the
												// next.
												if (hasMembers) {
													if (value == ",") {
														value = lex();
														if (value == "]") {
															// Unexpected trailing `,` in array literal.
															abort();
														}
													} else {
														// A `,` must separate each array element.
														abort();
													}
												}
												// Elisions and leading commas are not permitted.
												if (value == ",") {
													abort();
												}
												results.push(get(value));
											}
											return results;
										} else if (value == "{") {
											// Parses a JSON object, returning a new JavaScript object.
											results = {};
											for (;; hasMembers || (hasMembers = true)) {
												value = lex();
												// A closing curly brace marks the end of the object literal.
												if (value == "}") {
													break;
												}
												// If the object literal contains members, the current token
												// should be a comma separator.
												if (hasMembers) {
													if (value == ",") {
														value = lex();
														if (value == "}") {
															// Unexpected trailing `,` in object literal.
															abort();
														}
													} else {
														// A `,` must separate each object member.
														abort();
													}
												}
												// Leading commas are not permitted, object property names must be
												// double-quoted strings, and a `:` must separate each property
												// name and value.
												if (value == "," || typeof value != "string" ||
													(charIndexBuggy ? value.charAt(0) : value[
														0]) != "@" || lex() != ":") {
													abort();
												}
												results[value.slice(1)] = get(lex());
											}
											return results;
										}
										// Unexpected token encountered.
										abort();
									}
									return value;
								};

								// Internal: Updates a traversed object member.
								var update = function(source, property, callback) {
									var element = walk(source, property, callback);
									if (element === undef) {
										delete source[property];
									} else {
										source[property] = element;
									}
								};

								// Internal: Recursively traverses a parsed JSON object, invoking the
								// `callback` function for each value. This is an implementation of the
								// `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
								var walk = function(source, property, callback) {
									var value = source[property],
										length;
									if (typeof value == "object" && value) {
										// `forEach` can't be used to traverse an array in Opera <= 8.54
										// because its `Object#hasOwnProperty` implementation returns `false`
										// for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
										if (getClass.call(value) == arrayClass) {
											for (length = value.length; length--;) {
												update(value, length, callback);
											}
										} else {
											forEach(value, function(property) {
												update(value, property, callback);
											});
										}
									}
									return callback.call(source, property, value);
								};

								// Public: `JSON.parse`. See ES 5.1 section 15.12.2.
								JSON3.parse = function(source, callback) {
									var result, value;
									Index = 0;
									Source = "" + source;
									result = get(lex());
									// If a JSON string contains multiple tokens, it is invalid.
									if (lex() != "$") {
										abort();
									}
									// Reset the parser state.
									Index = Source = null;
									return callback && getClass.call(callback) ==
										functionClass ? walk((value = {}, value[""] = result,
											value), "", callback) : result;
								};
							}
						}

						// Export for asynchronous module loaders.
						if (isLoader) {
							define(function() {
								return JSON3;
							});
						}
					}(this));

				}, {}],
				48: [function(_dereq_, module, exports) {
					module.exports = toArray

					function toArray(list, index) {
						var array = []

						index = index || 0

						for (var i = index || 0; i < list.length; i++) {
							array[i - index] = list[i]
						}

						return array
					}

				}, {}]
			}, {}, [1])
			(1)
	});