// Stilts stomp-client.js 0.1.40 // Some parts © 2010 Jeff Mesnil – jmesnil.net/ // 0.1.40

var Stomp = {

Headers: {
  HOST : 'host',
  CONTENT_LENGTH : 'content-length',
  CONTENT_TYPE : 'content-type',
  ACCEPT_VERSION : 'accept-version',
  VERSION : 'version'
},

Transport: {

},

Transports: [],

unmarshal: function(data) {
  var divider     = data.search(/\n\n/);
  var headerLines = data.substring(0, divider).split('\n');
  var command     = headerLines.shift(), headers = {}, body = '';

  // Parse headers
  var line = idx = null;
  for ( var i = 0; i < headerLines.length; i++) {
    line = '' + headerLines[i];
    idx = line.indexOf(':');
    headers[line.substring(0, idx).trim()] = line.substring(idx + 1).trim();
  }
  try {
    if (headers[Stomp.Headers.CONTENT_LENGTH]) {
      var len = parseInt( headers[Stomp.Headers.CONTENT_LENGTH] );
      var start = divider + 2;
      // content-length is bytes, substring operates on characters
      body = Stomp.bytes_to_chars(Stomp.chars_to_bytes('' + data).substring(start, start+len))
    } else {
      // Parse body, stopping at the first \0 found.
      var chr = null;
      for ( var i = divider + 2; i < data.length; i++) {
        chr = data.charAt(i);
        if (chr === '\0') {
          break;
        }
        body += chr;
      }
    }
    return Stomp.frame(command, headers, body);
  } catch (err) {
    return Stomp.frame('ERROR', headers, "Error parsing frame: " + err.description);
  }
},

marshal: function(command, headers, body) {
  var frame = Stomp.frame(command, headers, body);
  return frame.toString() + '\0';
},

frame: function(command, headers, body) {
  return {
    command : command,
    headers : headers,
    body : body,
    toString : function() {
      var out = command + '\n';
      if (headers) {
        for (header in headers) {
          if (header != 'content-length' && headers.hasOwnProperty(header)) {
            out = out + header + ':' + headers[header] + '\n';
          }
        }
      }
      if (body) {
        out = out + 'content-length:' + Stomp.chars_to_bytes(body).length + '\n';
      }
      out = out + '\n';
      if (body) {
        out = out + body;
      }
      return out;
    }
  }
},

chars_to_bytes: function(chars) {
  return unescape(encodeURIComponent(chars));
},

bytes_to_chars: function(bytes) {
  return decodeURIComponent(escape(bytes));
},

logger: ( function() {
  if (typeof(console) == 'undefined') {
    return { log: function() { }, debug: function() { } };
  } else {
    return console;
  }
} )()

};

Stomp

Stomp.Client = function(host, port, secure) {

this._host   = host   || Stomp.DEFAULT_HOST;
this._port   = port   || Stomp.DEFAULT_PORT || 8675;
this._secure = secure || Stomp.DEFAULT_SECURE_FLAG || false;

}

Stomp.Client.prototype = {

Versions: { 
  VERSION_1_0 : "1.0", 
  VERSION_1_1 : "1.1",

},

supportedVersions : function() {
  return "1.0,1.1";
},

connect: function(callback) {
  if ( arguments.length == 1 ) {
    this._connectCallback = arguments[0];
  }
  if ( arguments.length == 2 ) {
    this._connectCallback = arguments[0];
    this._errorCallback = arguments[1];
  }
  if ( arguments.length == 3 ) {
    this._login = arguments[0];
    this._passcode = arguments[1];
    this._connectCallback = arguments[2];
  }
  if ( arguments.length == 4 ) {
    this._login = arguments[0];
    this._passcode = arguments[1];
    this._connectCallback = arguments[2];
    this._errorCallback = arguments[3];
  }

  this._connectTransport(callback);

},

_connectTransport: function(callback) {
  var transports = [];
  for ( i = 0 ; i < Stomp.Transports.length ; ++i ) {
     var t = new Stomp.Transports[i]( this._host, this._port, this._secure );
     t.client = this;
     transports.push( t );
   }

   this._buildConnector( transports, 0, callback )();
},

_buildConnector: function(transports, i, callback) {
  var client = this;
  if ( i+1 < transports.length ) {
    return function() {
      var fallback = client._buildConnector( transports, i+1, callback );
      try {
        transports[i].connect( function() {
          client._transport = transports[i];
          callback();
        }, fallback );
      } catch (err) {
        fallback();
      }
    };
  } else if ( i < transports.length ) {
    return function() {
      var fallback = client.connectionFailed.bind( this );
      try {
        transports[i].connect( function() {
          client._transport = transports[i];
          callback();
        }, client.connectionFailed.bind( this ) );
      } catch(err) {
        fallback();
      }
    };
  } else {
    return function() {
      client.connectionFailed(this);
    };
  }
},

connectionFailed: function() {
  Stomp.logger.log( "unable to connect" );
},

disconnect: function(disconnectCallback) {
  this._transmit("DISCONNECT");
  this._transport.close();
  if (disconnectCallback) {
    disconnectCallback();
  }
},

send: function(destination, headers, body) {
  var headers = headers || {};
  headers.destination = destination;
  this._transmit("SEND", headers, body);
},

subscribe: function(destination, callback, headers) {
  var headers = headers || {};
  var subscription_id = "sub-" + this._counter++;
  headers.destination = destination;
  headers.id = subscription_id;
  this._subscriptions['' + subscription_id] = callback;
  this._transmit("SUBSCRIBE", headers);
  return subscription_id;
},

unsubscribe: function(id, headers) {
  var headers = headers || {};
  headers.id = id;
  delete this._subscriptions[id];
  this._transmit("UNSUBSCRIBE", headers);
},

begin: function(transaction, headers) {
  var headers = headers || {};
  headers.transaction = transaction;
  this._transmit("BEGIN", headers);
},

commit: function(transaction, headers) {
  var headers = headers || {};
  headers.transaction = transaction;
  this._transmit("COMMIT", headers);
},

abort: function(transaction, headers) {
  var headers = headers || {};
  headers.transaction = transaction;
  this._transmit("ABORT", headers);
},

ack: function(message_id, headers) {
  var headers = headers || {};
  headers["message-id"] = message_id;
  this._transmit("ACK", headers);
},

nack: function(message_id, headers) {
  // TODO: Add nack functionality.
},

// ----------------------------------------
processMessage: function(message) {
  if (message.command == "MESSAGE") {
    var subId = message.headers['subscription'];
    var callback = this._subscriptions[ subId ];
    callback(message);
  } else if (message.command == "RECEIPT" && this.onreceipt) {
    this.onreceipt(message);
  } else if (message.command == "ERROR" && this.onerror) {
    this.onerror(message);
  }
},
// ----------------------------------------

_login: undefined,
_passcode: undefined,
_connectCallback: undefined,
_errorCallback: undefined,
_webSocketEnabled: true,
_longPollEnabled: true,

_transport: undefined,
_subscriptions: {},
_counter: 0,

_transmit: function(command, headers, body) {
      this._transport.transmit(command, headers, body);
},

} Stomp.Transport.WebSocket = function(host, port, secure) {

this._host = host;
this._port = port;
this._secure = secure;

}

Stomp.Transport.WebSocket.prototype = {

_ws: undefined,
_state: 'unconnected',

transmit: function(command, headers, body) {
  var out = Stomp.marshal(command, headers, body);
  this._ws.send(out);
},

connect: function(callback, errorCallback) {
  var wsClass = null;
  if ( typeof WebSocket != 'undefined' ) {
    wsClass = WebSocket;
  } else if ( typeof MozWebSocket != 'undefined' ) {
    wsClass = MozWebSocket;
  } else {
    return;
  }

  this._connectCallback = callback;
  this._ws = new wsClass( this._url() );
  this._ws.onopen = this._issueConnect.bind(this);
  this._ws.onmessage = this._handleMessage.bind(this);
  this._ws.onerror = errorCallback;
},

close: function() {
  this._ws.close(); 
},

send: function(data) {
  this._ws.send(data);
},

_issueConnect: function() {
  var headers = {};
  if ( this._login ) {
    headers['login'] = this._login;
  }
  if ( this._passcode ) {
    headers['passcode'] = this._passcode;
  }
  Stomp.logger.debug( this.client );
  headers[Stomp.Headers.ACCEPT_VERSION] = this.client.supportedVersions();
  this.transmit( "CONNECT", headers)
},

_handleMessage: function(evt) {
  var frame = Stomp.unmarshal(evt.data);
  if (frame.command == "CONNECTED") {
    this._version = frame.headers[Stomp.Headers.VERSION];
    if (this._connectCallback) {
      this._connectCallback(frame);
    }
  } else {
    this.client.processMessage( frame );
  }
},

_url: function() {
  if ( this._secure ) {
    return "wss://" + this._host + ":" + this._port + "/";
  }
  return "ws://" + this._host + ":" + this._port + "/";
},

}

Stomp.Transports.push( Stomp.Transport.WebSocket );

// ————————————————————— // Third-party Libraries // —————————————————————

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// Copyright: Hiroshi Ichikawa <gimite.net/en/> // License: New BSD License // Reference: dev.w3.org/html5/websockets/ // Reference: tools.ietf.org/html/rfc6455

WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = true;

(function() {

if (window.WEB_SOCKET_FORCE_FLASH) {
  // Keeps going.
} else if (window.WebSocket) {
  return;
} else if (window.MozWebSocket) {
  // Firefox.
  window.WebSocket = MozWebSocket;
  return;
}

var logger;
if (window.WEB_SOCKET_LOGGER) {
  logger = WEB_SOCKET_LOGGER;
} else if (window.console && window.console.log && window.console.error) {
  // In some environment, console is defined but console.log or console.error is missing.
  logger = window.console;
} else {
  logger = {log: function(){ }, error: function(){ }};
}

// swfobject.hasFlashPlayerVersion("10.0.0") doesn't work with Gnash.
if (swfobject.getFlashPlayerVersion().major < 10) {
  logger.error("Flash Player >= 10.0.0 is required.");
  return;
}
if (location.protocol == "file:") {
  logger.error(
    "WARNING: web-socket-js doesn't work in file:///... URL " +
    "unless you set Flash Security Settings properly. " +
    "Open the page via Web server i.e. http://...");
}

/**
 * Our own implementation of WebSocket class using Flash.
 * @param {string} url
 * @param {array or string} protocols
 * @param {string} proxyHost
 * @param {int} proxyPort
 * @param {string} headers
 */
window.WebSocket = function(url, protocols, proxyHost, proxyPort, headers) {
  var self = this;
  self.__id = WebSocket.__nextId++;
  WebSocket.__instances[self.__id] = self;
  self.readyState = WebSocket.CONNECTING;
  self.bufferedAmount = 0;
  self.__events = {};
  if (!protocols) {
    protocols = [];
  } else if (typeof protocols == "string") {
    protocols = [protocols];
  }
  // Uses setTimeout() to make sure __createFlash() runs after the caller sets ws.onopen etc.
  // Otherwise, when onopen fires immediately, onopen is called before it is set.
  self.__createTask = setTimeout(function() {
    WebSocket.__addTask(function() {
      self.__createTask = null;
      WebSocket.__flash.create(
          self.__id, url, protocols, proxyHost || null, proxyPort || 0, headers || null);
    });
  }, 0);
};

/**
 * Send data to the web socket.
 * @param {string} data  The data to send to the socket.
 * @return {boolean}  True for success, false for failure.
 */
WebSocket.prototype.send = function(data) {
  if (this.readyState == WebSocket.CONNECTING) {
    throw "INVALID_STATE_ERR: Web Socket connection has not been established";
  }
  // We use encodeURIComponent() here, because FABridge doesn't work if
  // the argument includes some characters. We don't use escape() here
  // because of this:
  // https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Functions#escape_and_unescape_Functions
  // But it looks decodeURIComponent(encodeURIComponent(s)) doesn't
  // preserve all Unicode characters either e.g. "\uffff" in Firefox.
  // Note by wtritch: Hopefully this will not be necessary using ExternalInterface.  Will require
  // additional testing.
  var result = WebSocket.__flash.send(this.__id, encodeURIComponent(data));
  if (result < 0) { // success
    return true;
  } else {
    this.bufferedAmount += result;
    return false;
  }
};

/**
 * Close this web socket gracefully.
 */
WebSocket.prototype.close = function() {
  if (this.__createTask) {
    clearTimeout(this.__createTask);
    this.__createTask = null;
    this.readyState = WebSocket.CLOSED;
    return;
  }
  if (this.readyState == WebSocket.CLOSED || this.readyState == WebSocket.CLOSING) {
    return;
  }
  this.readyState = WebSocket.CLOSING;
  WebSocket.__flash.close(this.__id);
};

/**
 * Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
 *
 * @param {string} type
 * @param {function} listener
 * @param {boolean} useCapture
 * @return void
 */
WebSocket.prototype.addEventListener = function(type, listener, useCapture) {
  if (!(type in this.__events)) {
    this.__events[type] = [];
  }
  this.__events[type].push(listener);
};

/**
 * Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
 *
 * @param {string} type
 * @param {function} listener
 * @param {boolean} useCapture
 * @return void
 */
WebSocket.prototype.removeEventListener = function(type, listener, useCapture) {
  if (!(type in this.__events)) return;
  var events = this.__events[type];
  for (var i = events.length - 1; i >= 0; --i) {
    if (events[i] === listener) {
      events.splice(i, 1);
      break;
    }
  }
};

/**
 * Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
 *
 * @param {Event} event
 * @return void
 */
WebSocket.prototype.dispatchEvent = function(event) {
  var events = this.__events[event.type] || [];
  for (var i = 0; i < events.length; ++i) {
    events[i](event);
  }
  var handler = this["on" + event.type];
  if (handler) handler.apply(this, [event]);
};

/**
 * Handles an event from Flash.
 * @param {Object} flashEvent
 */
WebSocket.prototype.__handleEvent = function(flashEvent) {

  if ("readyState" in flashEvent) {
    this.readyState = flashEvent.readyState;
  }
  if ("protocol" in flashEvent) {
    this.protocol = flashEvent.protocol;
  }

  var jsEvent;
  if (flashEvent.type == "open" || flashEvent.type == "error") {
    jsEvent = this.__createSimpleEvent(flashEvent.type);
  } else if (flashEvent.type == "close") {
    jsEvent = this.__createSimpleEvent("close");
    jsEvent.wasClean = flashEvent.wasClean ? true : false;
    jsEvent.code = flashEvent.code;
    jsEvent.reason = flashEvent.reason;
  } else if (flashEvent.type == "message") {
    var data = decodeURIComponent(flashEvent.message);
    jsEvent = this.__createMessageEvent("message", data);
  } else {
    throw "unknown event type: " + flashEvent.type;
  }

  this.dispatchEvent(jsEvent);

};

WebSocket.prototype.__createSimpleEvent = function(type) {
  if (document.createEvent && window.Event) {
    var event = document.createEvent("Event");
    event.initEvent(type, false, false);
    return event;
  } else {
    return {type: type, bubbles: false, cancelable: false};
  }
};

WebSocket.prototype.__createMessageEvent = function(type, data) {
  if (document.createEvent && window.MessageEvent && !window.opera) {
    var event = document.createEvent("MessageEvent");
    event.initMessageEvent("message", false, false, data, null, null, window, null);
    return event;
  } else {
    // IE and Opera, the latter one truncates the data parameter after any 0x00 bytes.
    return {type: type, data: data, bubbles: false, cancelable: false};
  }
};

/**
 * Define the WebSocket readyState enumeration.
 */
WebSocket.CONNECTING = 0;
WebSocket.OPEN = 1;
WebSocket.CLOSING = 2;
WebSocket.CLOSED = 3;

// Field to check implementation of WebSocket.
WebSocket.__isFlashImplementation = true;
WebSocket.__initialized = false;
WebSocket.__flash = null;
WebSocket.__instances = {};
WebSocket.__tasks = [];
WebSocket.__nextId = 0;

/**
 * Load a new flash security policy file.
 * @param {string} url
 */
WebSocket.loadFlashPolicyFile = function(url){
  WebSocket.__addTask(function() {
    WebSocket.__flash.loadManualPolicyFile(url);
  });
};

/**
 * Loads WebSocketMain.swf and creates WebSocketMain object in Flash.
 */
WebSocket.__initialize = function() {

  if (WebSocket.__initialized) return;
  WebSocket.__initialized = true;

  if (WebSocket.__swfLocation) {
    // For backword compatibility.
    window.WEB_SOCKET_SWF_LOCATION = WebSocket.__swfLocation;
  }
  if (!window.WEB_SOCKET_SWF_LOCATION) {
    logger.error("[WebSocket] set WEB_SOCKET_SWF_LOCATION to location of WebSocketMain.swf");
    return;
  }
  if (!window.WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR &&
      !WEB_SOCKET_SWF_LOCATION.match(/(^|\/)WebSocketMainInsecure\.swf(\?.*)?$/) &&
      WEB_SOCKET_SWF_LOCATION.match(/^\w+:\/\/([^\/]+)/)) {
    var swfHost = RegExp.$1;
    if (location.host != swfHost) {
      logger.error(
          "[WebSocket] You must host HTML and WebSocketMain.swf in the same host " +
          "('" + location.host + "' != '" + swfHost + "'). " +
          "See also 'How to host HTML file and SWF file in different domains' section " +
          "in README.md. If you use WebSocketMainInsecure.swf, you can suppress this message " +
          "by WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = true;");
    }
  }
  var container = document.createElement("div");
  container.id = "webSocketContainer";
  // Hides Flash box. We cannot use display: none or visibility: hidden because it prevents
  // Flash from loading at least in IE. So we move it out of the screen at (-100, -100).
  // But this even doesn't work with Flash Lite (e.g. in Droid Incredible). So with Flash
  // Lite, we put it at (0, 0). This shows 1x1 box visible at left-top corner but this is
  // the best we can do as far as we know now.
  container.style.position = "absolute";
  if (WebSocket.__isFlashLite()) {
    container.style.left = "0px";
    container.style.top = "0px";
  } else {
    container.style.left = "-100px";
    container.style.top = "-100px";
  }
  var holder = document.createElement("div");
  holder.id = "webSocketFlash";
  container.appendChild(holder);
  document.body.appendChild(container);
  // See this article for hasPriority:
  // http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36cfb8137124318eebc6-7ffd.html
  swfobject.embedSWF(
    WEB_SOCKET_SWF_LOCATION,
    "webSocketFlash",
    "1" /* width */,
    "1" /* height */,
    "10.0.0" /* SWF version */,
    null,
    null,
    {hasPriority: true, swliveconnect : true, allowScriptAccess: "always"},
    null,
    function(e) {
      if (!e.success) {
        logger.error("[WebSocket] swfobject.embedSWF failed");
      }
    }
  );

};

/**
 * Called by Flash to notify JS that it's fully loaded and ready
 * for communication.
 */
WebSocket.__onFlashInitialized = function() {
  // We need to set a timeout here to avoid round-trip calls
  // to flash during the initialization process.
  setTimeout(function() {
    WebSocket.__flash = document.getElementById("webSocketFlash");
    WebSocket.__flash.setCallerUrl(location.href);
    WebSocket.__flash.setDebug(!!window.WEB_SOCKET_DEBUG);
    for (var i = 0; i < WebSocket.__tasks.length; ++i) {
      WebSocket.__tasks[i]();
    }
    WebSocket.__tasks = [];
  }, 0);
};

/**
 * Called by Flash to notify WebSockets events are fired.
 */
WebSocket.__onFlashEvent = function() {
  setTimeout(function() {
    try {
      // Gets events using receiveEvents() instead of getting it from event object
      // of Flash event. This is to make sure to keep message order.
      // It seems sometimes Flash events don't arrive in the same order as they are sent.
      var events = WebSocket.__flash.receiveEvents();
      for (var i = 0; i < events.length; ++i) {
        WebSocket.__instances[events[i].webSocketId].__handleEvent(events[i]);
      }
    } catch (e) {
      logger.error(e);
    }
  }, 0);
  return true;
};

// Called by Flash.
WebSocket.__log = function(message) {
  logger.log(decodeURIComponent(message));
};

// Called by Flash.
WebSocket.__error = function(message) {
  logger.error(decodeURIComponent(message));
};

WebSocket.__addTask = function(task) {
  if (WebSocket.__flash) {
    task();
  } else {
    WebSocket.__tasks.push(task);
  }
};

/**
 * Test if the browser is running flash lite.
 * @return {boolean} True if flash lite is running, false otherwise.
 */
WebSocket.__isFlashLite = function() {
  if (!window.navigator || !window.navigator.mimeTypes) {
    return false;
  }
  var mimeType = window.navigator.mimeTypes["application/x-shockwave-flash"];
  if (!mimeType || !mimeType.enabledPlugin || !mimeType.enabledPlugin.filename) {
    return false;
  }
  return mimeType.enabledPlugin.filename.match(/flashlite/i) ? true : false;
};

if (!window.WEB_SOCKET_DISABLE_AUTO_INITIALIZATION) {
  // NOTE:
  //   This fires immediately if web_socket.js is dynamically loaded after
  //   the document is loaded.
  swfobject.addDomLoadEvent(function() {
    WebSocket.__initialize();
  });
}

})();

// —————————————- // HTTP Transport // —————————————-

Stomp.Transport.HTTP = function(host, port, secure) {

this._host = host;
this._port = port;
this._secure = secure;

}

Stomp.Transport.HTTP.prototype = {

_receiverRequest: undefined,
_disconnectReceiver: false,

connect: function(callback, errorCallback) {
  var headers = {};
  if ( this._login ) {
    headers.login = this._login;
  }
  if ( this._passcode ) {
    headers.passcode = this._passcode;
  }

  headers[Stomp.Headers.ACCEPT_VERSION] = this.client.supportedVersions();

  var transport = this;

  var request = new XMLHttpRequest();
  request.open( "POST", this._url(), true );
  request.withCredentials = true;

  var timeoutHandle = setTimeout( function() {
    if ( request.readyState != 0 && request.readyState != 4 ) {
      request.abort();
      errorCallack();
    }
  }, 5000 );

  request.onerror = errorCallback;

  request.onload = function() {
    clearTimeout( timeoutHandle );
    transport.connectMessageReceiver();
    callback();
  }
  request.setRequestHeader("Content-type","text/stomp");

  var data = Stomp.marshal("CONNECT", headers);
  request.send(data);
},

connectMessageReceiver: function() {
  var transport = this;
  try {
    this._eventSource = new EventSource( this._url(), { withCredentials: true } );
    this._eventSource.withCredentials = true;
    this._eventSource.onerror = function() {
      transport._eventSource.close();
      transport._eventSource = undefined;
      transport.connectLongPoll();
    };
    this._eventSource.onopen = function() {
      transport._eventSource.onerror = undefined; 
    };
    this._eventSource.onmessage = function(e) {
      var message = Stomp.unmarshal( e.data );
      transport.client.processMessage( message );
    };
  } catch (err) {
    Stomp.logger.debug( err );
    this._eventSource.close();
    this._eventSource = undefined;
    this.connectLongPoll();
  }
},

connectLongPoll: function() {
  var transport = this;

  var request = new XMLHttpRequest();
  request.open( "GET", this._url(), true );
  request.onload = function() {
    var message = Stomp.unmarshal( request.response );
    transport.client.processMessage( message );
  }

  request.onloadend = function() {
    if ( transport._disconnectReceiver ) {
      return;
    }
    transport.connectLongPoll();
  }

  setTimeout( function() {
    if ( request.readyState != 0 && request.readyState != 4 ) {
      request.abort();
    }
  }, 10000 );

  request.setRequestHeader("Accept","text/stomp-poll");
  request.withCredentials = true;
  request.send();
  this._receiverRequest = request;
},

disconnectMessageReceiver: function() {
  this._disconnectReceiver = true;
  if ( this._eventSource ) {
    this._eventSource.close();
    this._eventSource = undefined;
  }
  if ( this._receiverRequest ) {
    this._receiverRequest.abort();
    this._receiverRequest = undefined;
  }
},

close: function() {
  this.disconnectMessageReceiver();
},

transmit: function(command, headers, body, callbacks, timeoutMs) {
  var data = Stomp.marshal(command, headers, body);
  this.send(data, callbacks, timeoutMs);
},

send: function(data, callbacks) {
  callbacks = callbacks || {};
  var request = new XMLHttpRequest();
  request.open( "POST", this._url(), true );
  request.withCredentials = true;
  Stomp.logger.debug( request );
  if ( callbacks['load'] ) {
    request.onload = function() {
      callbacks['load'](request);
    }
  }
  if ( callbacks['error'] ) {
    request.onerror = function() {
      callbacks['error'](request);
    }
  }
  request.setRequestHeader("Content-type","text/stomp");
  request.send(data);
},

_url: function() {
  if ( this._secure ) {
    return "https://" + this._host + ":" + this._port + "/";
  }
  return "http://" + this._host + ":" + this._port + "/";
},

};

Stomp.Transports.push( Stomp.Transport.HTTP );