socket.io-client-v2/dist/socket.io.slim.dev.js

[](https://github.com/socketio/socket.io-client/actions) [](https://david-dm.org/socketio/socket.io

/*!
 * Socket.IO v2.5.0
 * (c) 2014-2021 Guillermo Rauch
 * Released under the MIT License.
 */
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define([], factory);
	else if(typeof exports === 'object')
		exports["io"] = factory();
	else
		root["io"] = factory();
})(this, function() {
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/******/ 	return __webpack_require__(0);
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/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';
	
	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
	
	/**
	 * Module dependencies.
	 */
	
	var url = __webpack_require__(1);
	var parser = __webpack_require__(4);
	var Manager = __webpack_require__(9);
	var debug = __webpack_require__(3)('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 === 'undefined' ? 'undefined' : _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) {
	
	    io = Manager(source, opts);
	  } else {
	    if (!cache[id]) {
	
	      cache[id] = Manager(source, opts);
	    }
	    io = cache[id];
	  }
	  if (parsed.query && !opts.query) {
	    opts.query = parsed.query;
	  }
	  return io.socket(parsed.path, opts);
	}
	
	/**
	 * 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 = __webpack_require__(9);
	exports.Socket = __webpack_require__(34);

/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';
	
	/**
	 * Module dependencies.
	 */
	
	var parseuri = __webpack_require__(2);
	var debug = __webpack_require__(3)('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
	  loc = loc || typeof location !== 'undefined' && 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)) {
	
	      if ('undefined' !== typeof loc) {
	        uri = loc.protocol + '//' + uri;
	      } else {
	        uri = 'https://' + uri;
	      }
	    }
	
	    // parse
	
	    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;
	}

/***/ }),
/* 2 */
/***/ (function(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;
	    }
	
	    uri.pathNames = pathNames(uri, uri['path']);
	    uri.queryKey = queryKey(uri, uri['query']);
	
	    return uri;
	};
	
	function pathNames(obj, path) {
	    var regx = /\/{2,9}/g,
	        names = path.replace(regx, "/").split("/");
	
	    if (path.substr(0, 1) == '/' || path.length === 0) {
	        names.splice(0, 1);
	    }
	    if (path.substr(path.length - 1, 1) == '/') {
	        names.splice(names.length - 1, 1);
	    }
	
	    return names;
	}
	
	function queryKey(uri, query) {
	    var data = {};
	
	    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
	        if ($1) {
	            data[$1] = $2;
	        }
	    });
	
	    return data;
	}


/***/ }),
/* 3 */
/***/ (function(module, exports) {

	"use strict";
	
	module.exports = function () {
	  return function () {};
	};

/***/ }),
/* 4 */
/***/ (function(module, exports, __webpack_require__) {

	
	/**
	 * Module dependencies.
	 */
	
	var debug = __webpack_require__(3)('socket.io-parser');
	var Emitter = __webpack_require__(5);
	var binary = __webpack_require__(6);
	var isArray = __webpack_require__(7);
	var isBuf = __webpack_require__(8);
	
	/**
	 * Protocol version.
	 *
	 * @api public
	 */
	
	exports.protocol = 4;
	
	/**
	 * Packet types.
	 *
	 * @api public
	 */
	
	exports.types = [
	  'CONNECT',
	  'DISCONNECT',
	  'EVENT',
	  'ACK',
	  'ERROR',
	  'BINARY_EVENT',
	  'BINARY_ACK'
	];
	
	/**
	 * 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() {}
	
	var ERROR_PACKET = exports.ERROR + '"encode error"';
	
	/**
	 * 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){
	
	
	  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) {
	
	  // first is type
	  var str = '' + obj.type;
	
	  // attachments if we have them
	  if (exports.BINARY_EVENT === obj.type || exports.BINARY_ACK === obj.type) {
	    str += obj.attachments + '-';
	  }
	
	  // if we have a namespace other than `/`
	  // we append it followed by a comma `,`
	  if (obj.nsp && '/' !== obj.nsp) {
	    str += obj.nsp + ',';
	  }
	
	  // immediately followed by the id
	  if (null != obj.id) {
	    str += obj.id;
	  }
	
	  // json data
	  if (null != obj.data) {
	    var payload = tryStringify(obj.data);
	    if (payload !== false) {
	      str += payload;
	    } else {
	      return ERROR_PACKET;
	    }
	  }
	
	
	  return str;
	}
	
	function tryStringify(str) {
	  try {
	    return JSON.stringify(str);
	  } catch(e){
	    return false;
	  }
	}
	
	/**
	 * 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 encoded packet string into packet JSON.
	 *
	 * @param {String} obj - encoded packet
	 * @return {Object} packet
	 * @api public
	 */
	
	Decoder.prototype.add = function(obj) {
	  var packet;
	  if (typeof obj === 'string') {
	    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 i = 0;
	  // look up type
	  var p = {
	    type: Number(str.charAt(0))
	  };
	
	  if (null == exports.types[p.type]) {
	    return error('unknown packet type ' + p.type);
	  }
	
	  // 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)) {
	    var payload = tryParse(str.substr(i));
	    var isPayloadValid = payload !== false && (p.type === exports.ERROR || isArray(payload));
	    if (isPayloadValid) {
	      p.data = payload;
	    } else {
	      return error('invalid payload');
	    }
	  }
	
	
	  return p;
	}
	
	function tryParse(str) {
	  try {
	    return JSON.parse(str);
	  } catch(e){
	    return false;
	  }
	}
	
	/**
	 * 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(msg) {
	  return {
	    type: exports.ERROR,
	    data: 'parser error: ' + msg
	  };
	}


/***/ }),
/* 5 */
/***/ (function(module, exports, __webpack_require__) {

	
	/**
	 * Expose `Emitter`.
	 */
	
	if (true) {
	  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;
	    }
	  }
	
	  // Remove event specific arrays for event types that no
	  // one is subscribed for to avoid memory leak.
	  if (callbacks.length === 0) {
	    delete this._callbacks['$' + event];
	  }
	
	  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 = new Array(arguments.length - 1)
	    , callbacks = this._callbacks['$' + event];
	
	  for (var i = 1; i < arguments.length; i++) {
	    args[i - 1] = arguments[i];
	  }
	
	  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;
	};


/***/ }),
/* 6 */
/***/ (function(module, exports, __webpack_require__) {

	/*global Blob,File*/
	
	/**
	 * Module requirements
	 */
	
	var isArray = __webpack_require__(7);
	var isBuf = __webpack_require__(8);
	var toString = Object.prototype.toString;
	var withNativeBlob = typeof Blob === 'function' || (typeof Blob !== 'undefined' && toString.call(Blob) === '[object BlobConstructor]');
	var withNativeFile = typeof File === 'function' || (typeof File !== 'undefined' && toString.call(File) === '[object FileConstructor]');
	
	/**
	 * 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;
	  var pack = packet;
	  pack.data = _deconstructPacket(packetData, buffers);
	  pack.attachments = buffers.length; // number of binary 'attachments'
	  return {packet: pack, buffers: buffers};
	};
	
	function _deconstructPacket(data, buffers) {
	  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], buffers);
	    }
	    return newData;
	  } else if (typeof data === 'object' && !(data instanceof Date)) {
	    var newData = {};
	    for (var key in data) {
	      newData[key] = _deconstructPacket(data[key], buffers);
	    }
	    return newData;
	  }
	  return data;
	}
	
	/**
	 * 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) {
	  packet.data = _reconstructPacket(packet.data, buffers);
	  packet.attachments = undefined; // no longer useful
	  return packet;
	};
	
	function _reconstructPacket(data, buffers) {
	  if (!data) return data;
	
	  if (data && data._placeholder) {
	    return buffers[data.num]; // appropriate buffer (should be natural order anyway)
	  } else if (isArray(data)) {
	    for (var i = 0; i < data.length; i++) {
	      data[i] = _reconstructPacket(data[i], buffers);
	    }
	  } else if (typeof data === 'object') {
	    for (var key in data) {
	      data[key] = _reconstructPacket(data[key], buffers);
	    }
	  }
	
	  return data;
	}
	
	/**
	 * 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 ((withNativeBlob && obj instanceof Blob) ||
	        (withNativeFile && 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 (typeof obj === 'object' && !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);
	  }
	};


/***/ }),
/* 7 */
/***/ (function(module, exports) {

	var toString = {}.toString;
	
	module.exports = Array.isArray || function (arr) {
	  return toString.call(arr) == '[object Array]';
	};


/***/ }),
/* 8 */
/***/ (function(module, exports) {

	
	module.exports = isBuf;
	
	var withNativeBuffer = typeof Buffer === 'function' && typeof Buffer.isBuffer === 'function';
	var withNativeArrayBuffer = typeof ArrayBuffer === 'function';
	
	var isView = function (obj) {
	  return typeof ArrayBuffer.isView === 'function' ? ArrayBuffer.isView(obj) : (obj.buffer instanceof ArrayBuffer);
	};
	
	/**
	 * Returns true if obj is a buffer or an arraybuffer.
	 *
	 * @api private
	 */
	
	function isBuf(obj) {
	  return (withNativeBuffer && Buffer.isBuffer(obj)) ||
	          (withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj)));
	}


/***/ }),
/* 9 */
/***/ (function(module, exports, __webpack_require__) {

	'use strict';
	
	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
	
	/**
	 * Module dependencies.
	 */
	
	var eio = __webpack_require__(10);
	var Socket = __webpack_require__(34);
	var Emitter = __webpack_require__(5);
	var parser = __webpack_require__(4);
	var on = __webpack_require__(36);
	var bind = __webpack_require__(37);
	var debug = __webpack_require__(3)('socket.io-client:manager');
	var indexOf = __webpack_require__(33);
	var Backoff = __webpack_require__(38);
	
	/**
	 * 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 === 'undefined' ? 'undefined' : _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 = [];
	  var _parser = opts.parser || parser;
	  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.generateId(nsp);
	    }
	  }
	};
	
	/**
	 * generate `socket.id` for the given `nsp`
	 *
	 * @param {String} nsp
	 * @return {String}
	 * @api private
	 */
	
	Manager.prototype.generateId = function (nsp) {
	  return (nsp === '/' ? '' : nsp + '#') + 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, opts) {
	
	  if (~this.readyState.indexOf('open')) return this;
	
	  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) {
	
	    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;
	
	    if (timeout === 0) {
	      openSub.destroy(); // prevents a race condition with the 'open' event
	    }
	
	    // set timer
	    var timer = setTimeout(function () {
	
	      openSub.destroy();
	      socket.close();
	      socket.emit('error', 'timeout');
	      self.emitAll('connect_timeout', timeout);
	    }, timeout);
	
	    this.subs.push({
	      destroy: function destroy() {
	        clearTimeout(timer);
	      }
	    });
	  }
	
	  this.subs.push(openSub);
	  this.subs.push(errorSub);
	
	  return this;
	};
	
	/**
	 * Called upon transport open.
	 *
	 * @api private
	 */
	
	Manager.prototype.onopen = function () {
	
	  // 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) {
	
	  this.emitAll('error', err);
	};
	
	/**
	 * Creates a new socket for the given `nsp`.
	 *
	 * @return {Socket}
	 * @api public
	 */
	
	Manager.prototype.socket = function (nsp, opts) {
	  var socket = this.nsps[nsp];
	  if (!socket) {
	    socket = new Socket(this, nsp, opts);
	    this.nsps[nsp] = socket;
	    var self = this;
	    socket.on('connecting', onConnecting);
	    socket.on('connect', function () {
	      socket.id = self.generateId(nsp);
	    });
	
	    if (this.autoConnect) {
	      // manually call here since connecting event 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) {
	
	  var self = this;
	  if (packet.query && packet.type === 0) packet.nsp += '?' + packet.query;
	
	  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 () {
	
	  var subsLength = this.subs.length;
	  for (var i = 0; i < subsLength; i++) {
	    var 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 () {
	
	  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) {
	
	  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) {
	
	    this.backoff.reset();
	    this.emitAll('reconnect_failed');
	    this.reconnecting = false;
	  } else {
	    var delay = this.backoff.duration();
	
	    this.reconnecting = true;
	    var timer = setTimeout(function () {
	      if (self.skipReconnect) return;
	
	      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) {
	
	          self.reconnecting = false;
	          self.reconnect();
	          self.emitAll('reconnect_error', err.data);
	        } else {
	
	          self.onreconnect();
	        }
	      });
	    }, delay);
	
	    this.subs.push({
	      destroy: function destroy() {
	        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);
	};

/***/ }),
/* 10 */
/***/ (function(module, exports, __webpack_require__) {

	
	module.exports = __webpack_require__(11);
	
	/**
	 * Exports parser
	 *
	 * @api public
	 *
	 */
	module.exports.parser = __webpack_require__(19);


/***/ }),
/* 11 */
/***/ (function(module, exports, __webpack_require__) {

	/**
	 * Module dependencies.
	 */
	
	var transports = __webpack_require__(12);
	var Emitter = __webpack_require__(5);
	var debug = __webpack_require__(3)('engine.io-client:socket');
	var index = __webpack_require__(33);
	var parser = __webpack_require__(19);
	var parseuri = __webpack_require__(2);
	var parseqs = __webpack_require__(27);
	
	/**
	 * Module exports.
	 */
	
	module.exports = Socket;
	
	/**
	 * 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
	    : (typeof location !== 'undefined' && '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 ||
	    (typeof location !== 'undefined' ? location.hostname : 'localhost');
	  this.port = opts.port || (typeof location !== 'undefined' && 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.withCredentials = false !== opts.withCredentials;
	  this.timestampParam = opts.timestampParam || 't';
	  this.timestampRequests = opts.timestampRequests;
	  this.transports = opts.transports || ['polling', 'websocket'];
	  this.transportOptions = opts.transportOptions || {};
	  this.readyState = '';
	  this.writeBuffer = [];
	  this.prevBufferLen = 0;
	  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;
	  this.forceNode = !!opts.forceNode;
	
	  // detect ReactNative environment
	  this.isReactNative = (typeof navigator !== 'undefined' && typeof navigator.product === 'string' && navigator.product.toLowerCase() === 'reactnative');
	
	  // other options for Node.js or ReactNative client
	  if (typeof self === 'undefined' || this.isReactNative) {
	    if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
	      this.extraHeaders = opts.extraHeaders;
	    }
	
	    if (opts.localAddress) {
	      this.localAddress = opts.localAddress;
	    }
	  }
	
	  // set on handshake
	  this.id = null;
	  this.upgrades = null;
	  this.pingInterval = null;
	  this.pingTimeout = null;
	
	  // set on heartbeat
	  this.pingIntervalTimer = null;
	  this.pingTimeoutTimer = null;
	
	  this.open();
	}
	
	Socket.priorWebsocketSuccess = false;
	
	/**
	 * Mix in `Emitter`.
	 */
	
	Emitter(Socket.prototype);
	
	/**
	 * Protocol version.
	 *
	 * @api public
	 */
	
	Socket.protocol = parser.protocol; // this is an int
	
	/**
	 * Expose deps for legacy compatibility
	 * and standalone browser access.
	 */
	
	Socket.Socket = Socket;
	Socket.Transport = __webpack_require__(18);
	Socket.transports = __webpack_require__(12);
	Socket.parser = __webpack_require__(19);
	
	/**
	 * Creates transport of the given type.
	 *
	 * @param {String} transport name
	 * @return {Transport}
	 * @api private
	 */
	
	Socket.prototype.createTransport = function (name) {
	
	  var query = clone(this.query);
	
	  // append engine.io protocol identifier
	  query.EIO = parser.protocol;
	
	  // transport name
	  query.transport = name;
	
	  // per-transport options
	  var options = this.transportOptions[name] || {};
	
	  // session id if we already have one
	  if (this.id) query.sid = this.id;
	
	  var transport = new transports[name]({
	    query: query,
	    socket: this,
	    agent: options.agent || this.agent,
	    hostname: options.hostname || this.hostname,
	    port: options.port || this.port,
	    secure: options.secure || this.secure,
	    path: options.path || this.path,
	    forceJSONP: options.forceJSONP || this.forceJSONP,
	    jsonp: options.jsonp || this.jsonp,
	    forceBase64: options.forceBase64 || this.forceBase64,
	    enablesXDR: options.enablesXDR || this.enablesXDR,
	    withCredentials: options.withCredentials || this.withCredentials,
	    timestampRequests: options.timestampRequests || this.timestampRequests,
	    timestampParam: options.timestampParam || this.timestampParam,
	    policyPort: options.policyPort || this.policyPort,
	    pfx: options.pfx || this.pfx,
	    key: options.key || this.key,
	    passphrase: options.passphrase || this.passphrase,
	    cert: options.cert || this.cert,
	    ca: options.ca || this.ca,
	    ciphers: options.ciphers || this.ciphers,
	    rejectUnauthorized: options.rejectUnauthorized || this.rejectUnauthorized,
	    perMessageDeflate: options.perMessageDeflate || this.perMessageDeflate,
	    extraHeaders: options.extraHeaders || this.extraHeaders,
	    forceNode: options.forceNode || this.forceNode,
	    localAddress: options.localAddress || this.localAddress,
	    requestTimeout: options.requestTimeout || this.requestTimeout,
	    protocols: options.protocols || void (0),
	    isReactNative: this.isReactNative
	  });
	
	  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) {
	
	  var self = this;
	
	  if (this.transport) {
	
	    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) {
	
	  var transport = this.createTransport(name, { probe: 1 });
	  var failed = false;
	  var self = this;
	
	  Socket.priorWebsocketSuccess = false;
	
	  function onTransportOpen () {
	    if (self.onlyBinaryUpgrades) {
	      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
	      failed = failed || upgradeLosesBinary;
	    }
	    if (failed) return;
	
	
	    transport.send([{ type: 'ping', data: 'probe' }]);
	    transport.once('packet', function (msg) {
	      if (failed) return;
	      if ('pong' === msg.type && 'probe' === msg.data) {
	
	        self.upgrading = true;
	        self.emit('upgrading', transport);
	        if (!transport) return;
	        Socket.priorWebsocketSuccess = 'websocket' === transport.name;
	
	
	        self.transport.pause(function () {
	          if (failed) return;
	          if ('closed' === self.readyState) return;
	
	
	          cleanup();
	
	          self.setTransport(transport);
	          transport.send([{ type: 'upgrade' }]);
	          self.emit('upgrade', transport);
	          transport = null;
	          self.upgrading = false;
	          self.flush();
	        });
	      } else {
	
	        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();
	
	
	
	    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) {
	
	      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 () {
	
	  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) {
	
	    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 ('openi