(function (f) { 
  if (typeof exports === "object" && typeof module !== "undefined") { 
    module.exports = f() 
  } else if (typeof define === "function" && define.amd) { 
    define([], f) 
  } else { 
    var g; 
    if (typeof window !== "undefined") {
       g = window } 
    else if (typeof global !== "undefined") { 
      g = global 
    } else if (typeof self !== "undefined") {
       g = self 
    } else { 
      g = this 
    } 
    // 修改socketio外部名称 为_io
    g._io = f() 
  } 
})(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); 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 (_dereq_, module, exports) {

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

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

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

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

    }, { "./socket": 3, "engine.io-parser": 19 }], 3: [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.hostname = uri.host;
            opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
            opts.port = uri.port;
            if (uri.query) opts.query = uri.query;
          } else if (opts.host) {
            opts.hostname = parseuri(opts.host).host;
          }

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

          if (opts.hostname && !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.policyPort = opts.policyPort || 843;
          this.rememberUpgrade = opts.rememberUpgrade || false;
          this.binaryType = null;
          this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
          this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;

          if (true === this.perMessageDeflate) this.perMessageDeflate = {};
          if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {
            this.perMessageDeflate.threshold = 1024;
          }

          // 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 === undefined ? true : opts.rejectUnauthorized;

          // other options for Node.js client
          var freeGlobal = typeof global == 'object' && global;
          if (freeGlobal.global === freeGlobal) {
            if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
              this.extraHeaders = opts.extraHeaders;
            }
          }

          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,
            perMessageDeflate: this.perMessageDeflate,
            extraHeaders: this.extraHeaders
          });

          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)
          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 () {
          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();
                this.emit('pong');
                break;

              case 'error':
                var err = new Error('server error');
                err.code = packet.data;
                this.onError(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 private
        */

        Socket.prototype.ping = function () {
          var self = this;
          this.sendPacket('ping', function () {
            self.emit('ping');
          });
        };

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

        Socket.prototype.onDrain = function () {
          this.writeBuffer.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 (0 === this.writeBuffer.length) {
            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.
         * @param {Object} options.
         * @return {Socket} for chaining.
         * @api public
         */

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

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

        Socket.prototype.sendPacket = function (type, data, options, fn) {
          if ('function' == typeof data) {
            fn = data;
            data = undefined;
          }

          if ('function' == typeof options) {
            fn = options;
            options = null;
          }

          if ('closing' == this.readyState || 'closed' == this.readyState) {
            return;
          }

          options = options || {};
          options.compress = false !== options.compress;

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

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

          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);
          }

          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);

            // 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);

            // clean buffers after, so users can still
            // grab the buffers on `close` event
            self.writeBuffer = [];
            self.prevBufferLen = 0;
          }
        };

        /**
         * 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 : typeof global !== "undefined" ? global : {})
    }, { "./transport": 4, "./transports": 5, "component-emitter": 15, "debug": 17, "engine.io-parser": 19, "indexof": 23, "parsejson": 26, "parseqs": 27, "parseuri": 28 }], 4: [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;

        // other options for Node.js client
        this.extraHeaders = opts.extraHeaders;
      }

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

      Emitter(Transport.prototype);

      /**
       * 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": 15, "engine.io-parser": 19 }], 5: [function (_dereq_, module, exports) {
      (function (global) {
        /**
         * Module dependencies
         */

        var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
        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 : typeof global !== "undefined" ? global : {})
    }, { "./polling-jsonp": 6, "./polling-xhr": 7, "./websocket": 9, "xmlhttprequest-ssl": 10 }], 6: [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];
          if (insertAt) {
            insertAt.parentNode.insertBefore(script, insertAt);
          }
          else {
            (document.head || document.body).appendChild(script);
          }
          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 self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
    }, { "./polling": 8, "component-inherit": 16 }], 7: [function (_dereq_, module, exports) {
      (function (global) {
        /**
         * Module requirements.
         */

        var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
        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;
          } else {
            this.extraHeaders = opts.extraHeaders;
          }
        }

        /**
         * 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;

          // other options for Node.js client
          opts.extraHeaders = this.extraHeaders;

          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;

          // other options for Node.js client
          this.extraHeaders = opts.extraHeaders;

          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);
            try {
              if (this.extraHeaders) {
                xhr.setDisableHeaderCheck(true);
                for (var i in this.extraHeaders) {
                  if (this.extraHeaders.hasOwnProperty(i)) {
                    xhr.setRequestHeader(i, this.extraHeaders[i]);
                  }
                }
              }
            } catch (e) { }
            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 {
                try {
                  data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));
                } catch (e) {
                  var ui8Arr = new Uint8Array(this.xhr.response);
                  var dataArray = [];
                  for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {
                    dataArray.push(ui8Arr[idx]);
                  }

                  data = String.fromCharCode.apply(null, dataArray);
                }
              }
            }
          } 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 : typeof global !== "undefined" ? global : {})
    }, { "./polling": 8, "component-emitter": 15, "component-inherit": 16, "debug": 17, "xmlhttprequest-ssl": 10 }], 8: [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 yeast = _dereq_('yeast');
      var debug = _dereq_('debug')('engine.io-client:polling');

      /**
       * Module exports.
       */

      module.exports = Polling;

      /**
       * Is XHR2 supported?
       */

      var hasXHR2 = (function () {
        var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
        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] = yeast();
        }

        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;
        }

        var ipv6 = this.hostname.indexOf(':') !== -1;
        return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
      };

    }, { "../transport": 4, "component-inherit": 16, "debug": 17, "engine.io-parser": 19, "parseqs": 27, "xmlhttprequest-ssl": 10, "yeast": 30 }], 9: [function (_dereq_, module, exports) {
      (function (global) {
        /**
         * Module dependencies.
         */

        var Transport = _dereq_('../transport');
        var parser = _dereq_('engine.io-parser');
        var parseqs = _dereq_('parseqs');
        var inherit = _dereq_('component-inherit');
        var yeast = _dereq_('yeast');
        var debug = _dereq_('debug')('engine.io-client:websocket');
        var BrowserWebSocket = global.WebSocket || global.MozWebSocket;

        /**
         * Get either the `WebSocket` or `MozWebSocket` globals
         * in the browser or try to resolve WebSocket-compatible
         * interface exposed by `ws` for Node-like environment.
         */

        var WebSocket = BrowserWebSocket;
        if (!WebSocket && typeof window === 'undefined') {
          try {
            WebSocket = _dereq_('ws');
          } catch (e) { }
        }

        /**
         * 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;
          }
          this.perMessageDeflate = opts.perMessageDeflate;
          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,
            perMessageDeflate: this.perMessageDeflate
          };

          // 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;
          if (this.extraHeaders) {
            opts.headers = this.extraHeaders;
          }

          this.ws = BrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);

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

          if (this.ws.supports && this.ws.supports.binary) {
            this.supportsBinary = true;
            this.ws.binaryType = 'buffer';
          } else {
            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
          var total = packets.length;
          for (var i = 0, l = total; i < l; i++) {
            (function (packet) {
              parser.encodePacket(packet, self.supportsBinary, function (data) {
                if (!BrowserWebSocket) {
                  // always create a new object (GH-437)
                  var opts = {};
                  if (packet.options) {
                    opts.compress = packet.options.compress;
                  }

                  if (self.perMessageDeflate) {
                    var len = 'string' == typeof data ? global.Buffer.byteLength(data) : data.length;
                    if (len < self.perMessageDeflate.threshold) {
                      opts.compress = false;
                    }
                  }
                }

                //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 {
                  if (BrowserWebSocket) {
                    // TypeError is thrown when passing the second argument on Safari
                    self.ws.send(data);
                  } else {
                    self.ws.send(data, opts);
                  }
                } catch (e) {
                  debug('websocket closed before onclose event');
                }

                --total || done();
              });
            })(packets[i]);
          }

          function done() {
            self.emit('flush');

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

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

          query = parseqs.encode(query);

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

          var ipv6 = this.hostname.indexOf(':') !== -1;
          return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : 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);
        };

      }).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
    }, { "../transport": 4, "component-inherit": 16, "debug": 17, "engine.io-parser": 19, "parseqs": 27, "ws": undefined, "yeast": 30 }], 10: [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": 22 }], 11: [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() { }

    }, {}], 12: [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;
      };

    }, {}], 13: [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+/");

    }, {}], 14: [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 : typeof global !== "undefined" ? global : {})
    }, {}], 15: [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;
      };

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

      module.exports = function (a, b) {
        var fn = function () { };
        fn.prototype = b.prototype;
        a.prototype = new fn;
        a.prototype.constructor = a;
      };
    }, {}], 17: [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;
      exports.storage = 'undefined' != typeof chrome
        && 'undefined' != typeof chrome.storage
        ? chrome.storage.local
        : localstorage();

      /**
       * 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
          (navigator.userAgent.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 IE8/9, where
        // the `console.log` function doesn't have 'apply'
        return 'object' === typeof console
          && console.log
          && Function.prototype.apply.call(console.log, console, arguments);
      }

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

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

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

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

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

      exports.enable(load());

      /**
       * Localstorage attempts to return the localstorage.
       *
       * This is necessary because safari throws
       * when a user disables cookies/localstorage
       * and you attempt to access it.
       *
       * @return {LocalStorage}
       * @api private
       */

      function localstorage() {
        try {
          return window.localStorage;
        } catch (e) { }
      }

    }, { "./debug": 18 }], 18: [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": 25 }], 19: [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 = navigator.userAgent.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(navigator.userAgent);

        /**
         * 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 global.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 : typeof global !== "undefined" ? global : {})
    }, { "./keys": 20, "after": 11, "arraybuffer.slice": 12, "base64-arraybuffer": 13, "blob": 14, "has-binary": 21, "utf8": 29 }], 20: [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;
      };

    }, {}], 21: [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 : typeof global !== "undefined" ? global : {})
    }, { "isarray": 24 }], 22: [function (_dereq_, module, exports) {

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

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

    }, {}], 23: [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;
      };
    }, {}], 24: [function (_dereq_, module, exports) {
      module.exports = Array.isArray || function (arr) {
        return Object.prototype.toString.call(arr) == '[object Array]';
      };

    }, {}], 25: [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) {
        str = '' + str;
        if (str.length > 10000) return;
        var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|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 'yrs':
          case 'yr':
          case 'y':
            return n * y;
          case 'days':
          case 'day':
          case 'd':
            return n * d;
          case 'hours':
          case 'hour':
          case 'hrs':
          case 'hr':
          case 'h':
            return n * h;
          case 'minutes':
          case 'minute':
          case 'mins':
          case 'min':
          case 'm':
            return n * m;
          case 'seconds':
          case 'second':
          case 'secs':
          case 'sec':
          case 's':
            return n * s;
          case 'milliseconds':
          case 'millisecond':
          case 'msecs':
          case 'msec':
          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';
      }

    }, {}], 26: [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 : typeof global !== "undefined" ? global : {})
    }, {}], 27: [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;
      };

    }, {}], 28: [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;
      };

    }, {}], 29: [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’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) {
                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 : typeof global !== "undefined" ? global : {})
    }, {}], 30: [function (_dereq_, module, exports) {
      'use strict';

      var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
        , length = 64
        , map = {}
        , seed = 0
        , i = 0
        , prev;

      /**
       * Return a string representing the specified number.
       *
       * @param {Number} num The number to convert.
       * @returns {String} The string representation of the number.
       * @api public
       */
      function encode(num) {
        var encoded = '';

        do {
          encoded = alphabet[num % length] + encoded;
          num = Math.floor(num / length);
        } while (num > 0);

        return encoded;
      }

      /**
       * Return the integer value specified by the given string.
       *
       * @param {String} str The string to convert.
       * @returns {Number} The integer value represented by the string.
       * @api public
       */
      function decode(str) {
        var decoded = 0;

        for (i = 0; i < str.length; i++) {
          decoded = decoded * length + map[str.charAt(i)];
        }

        return decoded;
      }

      /**
       * Yeast: A tiny growing id generator.
       *
       * @returns {String} A unique id.
       * @api public
       */
      function yeast() {
        var now = encode(+new Date());

        if (now !== prev) return seed = 0, prev = now;
        return now + '.' + encode(seed++);
      }

      //
      // Map each character to its index.
      //
      for (; i < length; i++) map[alphabet[i]] = i;

      //
      // Expose the `yeast`, `encode` and `decode` functions.
      //
      yeast.encode = encode;
      yeast.decode = decode;
      module.exports = yeast;

    }, {}], 31: [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 path = parsed.path;
        var sameNamespace = cache[id] && path in cache[id].nsps;
        var newConnection = opts.forceNew || opts['force new connection'] ||
          false === opts.multiplex || sameNamespace;

        var io;

        if (newConnection) {
          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": 32, "./socket": 34, "./url": 35, "debug": 39, "socket.io-parser": 47 }], 32: [function (_dereq_, module, exports) {

      /**
       * Module dependencies.
       */

      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 debug = _dereq_('debug')('socket.io-client:manager');
      var indexOf = _dereq_('indexof');
      var Backoff = _dereq_('backo2');

      /**
       * IE6+ hasOwnProperty
       */

      var has = Object.prototype.hasOwnProperty;

      /**
       * 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';
        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.connecting = [];
        this.lastPing = null;
        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) {
          if (has.call(this.nsps, nsp)) {
            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) {
          if (has.call(this.nsps, nsp)) {
            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(socket, 'ping', bind(this, 'onping')));
        this.subs.push(on(socket, 'pong', bind(this, 'onpong')));
        this.subs.push(on(socket, 'error', bind(this, 'onerror')));
        this.subs.push(on(socket, 'close', bind(this, 'onclose')));
        this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
      };

      /**
       * Called upon a ping.
       *
       * @api private
       */

      Manager.prototype.onping = function () {
        this.lastPing = new Date;
        this.emitAll('ping');
      };

      /**
       * Called upon a packet.
       *
       * @api private
       */

      Manager.prototype.onpong = function () {
        this.emitAll('pong', new Date - this.lastPing);
      };

      /**
       * 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('connecting', onConnecting);
          socket.on('connect', function () {
            socket.id = self.engine.id;
          });

          if (this.autoConnect) {
            // manually call here since connecting evnet is fired before listening
            onConnecting();
          }
        }

        function onConnecting() {
          if (!~indexOf(self.connecting, socket)) {
            self.connecting.push(socket);
          }
        }

        return socket;
      };

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

      Manager.prototype.destroy = function (socket) {
        var index = indexOf(this.connecting, socket);
        if (~index) this.connecting.splice(index, 1);
        if (this.connecting.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], packet.options);
            }
            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 () {
        debug('cleanup');

        var sub;
        while (sub = this.subs.shift()) sub.destroy();

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

        this.decoder.destroy();
      };

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

      Manager.prototype.close =
        Manager.prototype.disconnect = function () {
          debug('disconnect');
          this.skipReconnect = true;
          this.reconnecting = false;
          if ('opening' == this.readyState) {
            // `onclose` will not fire because
            // an open event never happened
            this.cleanup();
          }
          this.backoff.reset();
          this.readyState = 'closed';
          if (this.engine) this.engine.close();
        };

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

      Manager.prototype.onclose = function (reason) {
        debug('onclose');

        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": 33, "./socket": 34, "backo2": 36, "component-bind": 37, "component-emitter": 38, "debug": 39, "engine.io-client": 1, "indexof": 42, "socket.io-parser": 47 }], 33: [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) {
        obj.on(ev, fn);
        return {
          destroy: function () {
            obj.removeListener(ev, fn);
          }
        };
      }

    }, {}], 34: [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,
        connecting: 1,
        disconnect: 1,
        error: 1,
        reconnect: 1,
        reconnect_attempt: 1,
        reconnect_failed: 1,
        reconnect_error: 1,
        reconnecting: 1,
        ping: 1,
        pong: 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 = {};
        this.receiveBuffer = [];
        this.sendBuffer = [];
        this.connected = false;
        this.disconnected = true;
        if (this.io.autoConnect) this.open();
      }

      /**
       * 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();
          this.emit('connecting');
          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 };

        packet.options = {};
        packet.options.compress = !this.flags || false !== this.flags.compress;

        // 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);
        }

        delete this.flags;

        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) {
        var ack = this.acks[packet.id];
        if ('function' == typeof ack) {
          debug('calling ack %s with %j', packet.id, packet.data);
          ack.apply(this, packet.data);
          delete this.acks[packet.id];
        } else {
          debug('bad ack %s', 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;
        };

      /**
       * Sets the compress flag.
       *
       * @param {Boolean} if `true`, compresses the sending data
       * @return {Socket} self
       * @api public
       */

      Socket.prototype.compress = function (compress) {
        this.flags = this.flags || {};
        this.flags.compress = compress;
        return this;
      };

    }, { "./on": 33, "component-bind": 37, "component-emitter": 38, "debug": 39, "has-binary": 41, "socket.io-parser": 47, "to-array": 51 }], 35: [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.host + 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 || '/';

          var ipv6 = obj.host.indexOf(':') !== -1;
          var host = ipv6 ? '[' + obj.host + ']' : obj.host;

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

          return obj;
        }

      }).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
    }, { "debug": 39, "parseuri": 45 }], 36: [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;
      };


    }, {}], 37: [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)));
        }
      };

    }, {}], 38: [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) {
        function on() {
          this.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;
      };

    }, {}], 39: [function (_dereq_, module, exports) {
      arguments[4][17][0].apply(exports, arguments)
    }, { "./debug": 40, "dup": 17 }], 40: [function (_dereq_, module, exports) {
      arguments[4][18][0].apply(exports, arguments)
    }, { "dup": 18, "ms": 44 }], 41: [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 && 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) {
              // see: https://github.com/Automattic/has-binary/pull/4
              if (obj.toJSON && 'function' == typeof 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 : typeof global !== "undefined" ? global : {})
    }, { "isarray": 43 }], 42: [function (_dereq_, module, exports) {
      arguments[4][23][0].apply(exports, arguments)
    }, { "dup": 23 }], 43: [function (_dereq_, module, exports) {
      arguments[4][24][0].apply(exports, arguments)
    }, { "dup": 24 }], 44: [function (_dereq_, module, exports) {
      arguments[4][25][0].apply(exports, arguments)
    }, { "dup": 25 }], 45: [function (_dereq_, module, exports) {
      arguments[4][28][0].apply(exports, arguments)
    }, { "dup": 28 }], 46: [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 : typeof global !== "undefined" ? global : {})
    }, { "./is-buffer": 48, "isarray": 43 }], 47: [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": 46, "./is-buffer": 48, "component-emitter": 49, "debug": 39, "isarray": 43, "json3": 50 }], 48: [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 : typeof global !== "undefined" ? global : {})
    }, {}], 49: [function (_dereq_, module, exports) {
      arguments[4][15][0].apply(exports, arguments)
    }, { "dup": 15 }], 50: [function (_dereq_, module, exports) {
      (function (global) {
        /*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */
        ; (function () {
          // 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;

          // A set of types used to distinguish objects from primitives.
          var objectTypes = {
            "function": true,
            "object": true
          };

          // Detect the `exports` object exposed by CommonJS implementations.
          var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;

          // Use the `global` object exposed by Node (including Browserify via
          // `insert-module-globals`), Narwhal, and Ringo as the default context,
          // and the `window` object in browsers. Rhino exports a `global` function
          // instead.
          var root = objectTypes[typeof window] && window || this,
            freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == "object" && global;

          if (freeGlobal && (freeGlobal["global"] === freeGlobal || freeGlobal["window"] === freeGlobal || freeGlobal["self"] === freeGlobal)) {
            root = freeGlobal;
          }

          // Public: Initializes JSON 3 using the given `context` object, attaching the
          // `stringify` and `parse` functions to the specified `exports` object.
          function runInContext(context, exports) {
            context || (context = root["Object"]());
            exports || (exports = root["Object"]());

            // Native constructor aliases.
            var Number = context["Number"] || root["Number"],
              String = context["String"] || root["String"],
              Object = context["Object"] || root["Object"],
              Date = context["Date"] || root["Date"],
              SyntaxError = context["SyntaxError"] || root["SyntaxError"],
              TypeError = context["TypeError"] || root["TypeError"],
              Math = context["Math"] || root["Math"],
              nativeJSON = context["JSON"] || root["JSON"];

            // Delegate to the native `stringify` and `parse` implementations.
            if (typeof nativeJSON == "object" && nativeJSON) {
              exports.stringify = nativeJSON.stringify;
              exports.parse = nativeJSON.parse;
            }

            // Convenience aliases.
            var objectProto = Object.prototype,
              getClass = objectProto.toString,
              isProperty, forEach, undef;

            // 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 = exports.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 = exports.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]",
                dateClass = "[object Date]",
                numberClass = "[object Number]",
                stringClass = "[object String]",
                arrayClass = "[object Array]",
                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 = objectProto.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: 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" && objectTypes[typeof 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, useCharIndex = !charIndexBuggy || length > 10;
                  var symbols = useCharIndex && (charIndexBuggy ? value.split("") : value);
                  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 += useCharIndex ? symbols[index] : value.charAt(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.
                exports.stringify = function (source, filter, width) {
                  var whitespace, callback, properties, className;
                  if (objectTypes[typeof filter] && 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.
                exports.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;
                };
              }
            }

            exports["runInContext"] = runInContext;
            return exports;
          }

          if (freeExports && !isLoader) {
            // Export for CommonJS environments.
            runInContext(root, freeExports);
          } else {
            // Export for web browsers and JavaScript engines.
            var nativeJSON = root.JSON,
              previousJSON = root["JSON3"],
              isRestored = false;

            var JSON3 = runInContext(root, (root["JSON3"] = {
              // Public: Restores the original value of the global `JSON` object and
              // returns a reference to the `JSON3` object.
              "noConflict": function () {
                if (!isRestored) {
                  isRestored = true;
                  root.JSON = nativeJSON;
                  root["JSON3"] = previousJSON;
                  nativeJSON = previousJSON = null;
                }
                return JSON3;
              }
            }));

            root.JSON = {
              "parse": JSON3.parse,
              "stringify": JSON3.stringify
            };
          }

          // Export for asynchronous module loaders.
          if (isLoader) {
            define(function () {
              return JSON3;
            });
          }
        }).call(this);

      }).call(this, typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
    }, {}], 51: [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
      }

    }, {}]
  }, {}, [31])(31)
});