text: (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);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.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(require,module,exports){
  
  module.exports =  require('./lib/');
  
  },{"./lib/":2}],2:[function(require,module,exports){
  
  module.exports = require('./socket');
  
  /**
   * Exports parser
   *
   * @api public
   *
   */
  module.exports.parser = require('engine.io-parser');
  
  },{"./socket":3,"engine.io-parser":13}],3:[function(require,module,exports){
  (function (global){
  /**
   * Module dependencies.
   */
  
  var transports = require('./transports');
  var Emitter = require('emitter');
  var debug = require('debug')('engine.io-client:socket');
  var index = require('indexof');
  var parser = require('engine.io-parser');
  var parseuri = require('parseuri');
  var parsejson = require('parsejson');
  var parseqs = require('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();
    }
  
    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.forceBase64 = !!opts.forceBase64;
    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.open();
    this.binaryType = null;
    this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
  }
  
  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 = require('./transport');
  Socket.transports = require('./transports');
  Socket.parser = require('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,
      forceBase64: this.forceBase64,
      timestampRequests: this.timestampRequests,
      timestampParam: this.timestampParam,
      policyPort: this.policyPort,
      socket: this
    });
  
    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 {
      transport = this.transports[0];
    }
    this.readyState = 'opening';
    var transport = this.createTransport(transport);
    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);
          Socket.priorWebsocketSuccess = 'websocket' == transport.name;
  
          debug('pausing current transport "%s"', self.transport.name);
          self.transport.pause(function () {
            if (failed) return;
            if ('closed' == self.readyState || 'closing' == 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 () {
    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) {
    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.onClose('forced close');
      debug('socket closing - telling transport to close');
      this.transport.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) {
      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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./transport":4,"./transports":5,"debug":11,"emitter":12,"engine.io-parser":13,"indexof":22,"parsejson":24,"parseqs":25,"parseuri":26}],4:[function(require,module,exports){
  /**
   * Module dependencies.
   */
  
  var parser = require('engine.io-parser');
  var Emitter = require('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;
  }
  
  /**
   * 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) {
    this.onPacket(parser.decodePacket(data, this.socket.binaryType));
  };
  
  /**
   * 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');
  };
  
  },{"emitter":12,"engine.io-parser":13}],5:[function(require,module,exports){
  (function (global){
  /**
   * Module dependencies
   */
  
  var XMLHttpRequest = require('xmlhttprequest');
  var XHR = require('./polling-xhr');
  var JSONP = require('./polling-jsonp');
  var websocket = require('./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;
  
    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;
    }
  
    opts.xdomain = xd;
    xhr = new XMLHttpRequest(opts);
  
    if ('open' in xhr && !opts.forceJSONP) {
      return new XHR(opts);
    } else {
      return new JSONP(opts);
    }
  }
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./polling-jsonp":6,"./polling-xhr":7,"./websocket":9,"xmlhttprequest":10}],6:[function(require,module,exports){
  (function (global){
  
  /**
   * Module requirements.
   */
  
  var Polling = require('./polling');
  var inherit = require('inherits');
  
  /**
   * 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;
      });
    }
  }
  
  /**
   * 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;
    }
  
    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(navigator.userAgent);
    
    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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./polling":8,"inherits":23}],7:[function(require,module,exports){
  (function (global){
  /**
   * Module requirements.
   */
  
  var XMLHttpRequest = require('xmlhttprequest');
  var Polling = require('./polling');
  var Emitter = require('emitter');
  var debug = require('debug')('engine.io-client:polling-xhr');
  var inherit = require('inherits');
  
  /**
   * 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;
    }
  }
  
  /**
   * 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.agent = this.agent || false;
    opts.supportsBinary = this.supportsBinary;
    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.async = false !== opts.async;
    this.data = undefined != opts.data ? opts.data : null;
    this.agent = opts.agent;
    this.create(opts.isBinary, opts.supportsBinary);
  }
  
  /**
   * Mix in `Emitter`.
   */
  
  Emitter(Request.prototype);
  
  /**
   * Creates the XHR object and sends the request.
   *
   * @api private
   */
  
  Request.prototype.create = function(isBinary, supportsBinary){
    var xhr = this.xhr = new XMLHttpRequest({ agent: this.agent, xdomain: this.xd });
    var self = this;
  
    try {
      debug('xhr open %s: %s', this.method, this.uri);
      xhr.open(this.method, this.uri, this.async);
      if (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 (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;
      }
  
      xhr.onreadystatechange = function(){
        var data;
  
        try {
          if (4 != xhr.readyState) return;
          if (200 == xhr.status || 1223 == xhr.status) {
            var contentType = xhr.getResponseHeader('Content-Type');
            if (contentType === 'application/octet-stream') {
              data = xhr.response;
            } else {
              if (!supportsBinary) {
                data = xhr.responseText;
              } else {
                data = 'ok';
              }
            }
          } 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);
          }
        } catch (e) {
          self.onError(e);
        }
  
        if (null != data) {
          self.onData(data);
        }
      };
  
      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();
  };
  
  /**
   * Cleans up house.
   *
   * @api private
   */
  
  Request.prototype.cleanup = function(){
    if ('undefined' == typeof this.xhr || null === this.xhr) {
      return;
    }
    // xmlhttprequest
    this.xhr.onreadystatechange = empty;
  
    try {
      this.xhr.abort();
    } catch(e) {}
  
    if (global.document) {
      delete Request.requests[this.index];
    }
  
    this.xhr = null;
  };
  
  /**
   * 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);
    }
  }
  
  function unloadHandler() {
    for (var i in Request.requests) {
      if (Request.requests.hasOwnProperty(i)) {
        Request.requests[i].abort();
      }
    }
  }
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./polling":8,"debug":11,"emitter":12,"inherits":23,"xmlhttprequest":10}],8:[function(require,module,exports){
  /**
   * Module dependencies.
   */
  
  var Transport = require('../transport');
  var parseqs = require('parseqs');
  var parser = require('engine.io-parser');
  var debug = require('debug')('engine.io-client:polling');
  var inherit = require('inherits');
  
  /**
   * Module exports.
   */
  
  module.exports = Polling;
  
  /**
   * Is XHR2 supported?
   */
  
  var hasXHR2 = (function() {
    var XMLHttpRequest = require('xmlhttprequest');
    var xhr = new XMLHttpRequest({ agent: this.agent, 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":4,"debug":11,"engine.io-parser":13,"inherits":23,"parseqs":25,"xmlhttprequest":10}],9:[function(require,module,exports){
  /**
   * Module dependencies.
   */
  
  var Transport = require('../transport');
  var parser = require('engine.io-parser');
  var parseqs = require('parseqs');
  var debug = require('debug')('engine.io-client:websocket');
  var inherit = require('inherits');
  
  /**
   * `ws` exposes a WebSocket-compatible interface in
   * Node, or the `WebSocket` or `MozWebSocket` globals
   * in the browser.
   */
  
  var WebSocket = require('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 };
  
    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(navigator.userAgent)) {
    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":4,"debug":11,"engine.io-parser":13,"inherits":23,"parseqs":25,"ws":27}],10:[function(require,module,exports){
  // browser shim for xmlhttprequest module
  var hasCORS = require('has-cors');
  
  module.exports = function(opts) {
    var xdomain = opts.xdomain;
  
    // XMLHttpRequest can be disabled on IE
    try {
      if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
        return new XMLHttpRequest();
      }
    } catch (e) { }
  
    if (!xdomain) {
      try {
        return new ActiveXObject('Microsoft.XMLHTTP');
      } catch(e) { }
    }
  }
  
  },{"has-cors":20}],11:[function(require,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){}
  
  },{}],12:[function(require,module,exports){
  
  /**
   * Module dependencies.
   */
  
  var index = require('indexof');
  
  /**
   * 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 = 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);
    }
  
    fn._off = on;
    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 = 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 i = index(callbacks, fn._off || fn);
    if (~i) callbacks.splice(i, 1);
    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;
  };
  
  },{"indexof":22}],13:[function(require,module,exports){
  (function (global){
  /**
   * Module dependencies.
   */
  
  var keys = require('./keys');
  var sliceBuffer = require('arraybuffer.slice');
  var base64encoder = require('base64-arraybuffer');
  var after = require('after');
  var utf8 = require('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 = navigator.userAgent.match(/Android/i);
  
  /**
   * Current protocol version.
   */
  
  exports.protocol = 2;
  
  /**
   * 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 = require('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, callback) {
    if (typeof supportsBinary == 'function') {
      callback = supportsBinary;
      supportsBinary = false;
    }
  
    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);
    }
  
    // Sending data as a utf-8 string
    var encoded = packets[packet.type];
  
    // data fragment is optional
    if (undefined !== packet.data) {
      encoded += utf8.encode(String(packet.data));
    }
  
    return callback('' + encoded);
  
  };
  
  /**
   * 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, callback);
    };
    return fr.readAsArrayBuffer(packet.data);
  }
  
  function encodeBlob(packet, supportsBinary, callback) {
    if (!supportsBinary) {
      return exports.encodeBase64Packet(packet, callback);
    }
  
    if (isAndroid) {
      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) {
    // String data
    if (typeof data == 'string' || data === undefined) {
      if (data.charAt(0) == 'b') {
        return exports.decodeBase64Packet(data.substr(1), binaryType);
      }
  
      data = utf8.decode(data);
      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;
    }
  
    if (supportsBinary) {
      if (Blob && !isAndroid) {
        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, supportsBinary, 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);
  
          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, 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, 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 = [];
  
    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;
        msgLength += tailArray[i];
      }
      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), i, total);
    });
  };
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./keys":14,"after":15,"arraybuffer.slice":16,"base64-arraybuffer":17,"blob":18,"utf8":19}],14:[function(require,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;
  };
  
  },{}],15:[function(require,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() {}
  
  },{}],16:[function(require,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;
  };
  
  },{}],17:[function(require,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+/");
  
  },{}],18:[function(require,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 b = new Blob(['hi']);
      return b.size == 2;
    } catch(e) {
      return false;
    }
  })();
  
  /**
   * Check if BlobBuilder is supported
   */
  
  var blobBuilderSupported = BlobBuilder
    && BlobBuilder.prototype.append
    && BlobBuilder.prototype.getBlob;
  
  function BlobBuilderConstructor(ary, options) {
    options = options || {};
  
    var bb = new BlobBuilder();
    for (var i = 0; i < ary.length; i++) {
      bb.append(ary[i]);
    }
    return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
  };
  
  module.exports = (function() {
    if (blobSupported) {
      return global.Blob;
    } else if (blobBuilderSupported) {
      return BlobBuilderConstructor;
    } else {
      return undefined;
    }
  })();
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}],19:[function(require,module,exports){
  (function (global){
  /*! http://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 http://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 http://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 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
  			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);
  
  		// console.log(JSON.stringify(codePoints.map(function(x) {
  		// 	return 'U+' + x.toString(16).toUpperCase();
  		// })));
  
  		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’s 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) {
  				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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}],20:[function(require,module,exports){
  
  /**
   * Module dependencies.
   */
  
  var global = require('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":21}],21:[function(require,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; })();
  
  },{}],22:[function(require,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;
  };
  },{}],23:[function(require,module,exports){
  if (typeof Object.create === 'function') {
    // implementation from standard node.js 'util' module
    module.exports = function inherits(ctor, superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      });
    };
  } else {
    // old school shim for old browsers
    module.exports = function inherits(ctor, superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
  
  },{}],24:[function(require,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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}],25:[function(require,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;
  };
  
  },{}],26:[function(require,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;
  };
  
  },{}],27:[function(require,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;
    if (protocols) {
      instance = new WebSocket(uri, protocols);
    } else {
      instance = new WebSocket(uri);
    }
    return instance;
  }
  
  if (WebSocket) ws.prototype = WebSocket.prototype;
  
  },{}],28:[function(require,module,exports){
  var socket = require('engine.io-client')('ws://localhost');
  socket.on('open', function(){
    socket.on('message', function(data){
      console.log('message', data);
    });
    socket.on('close', function(){
      console.log('close');
    });
  });
  window.socket = socket;
  
  },{"engine.io-client":1}]},{},[28]);
  