Izmjenjena struktura, dodan backand

web/node_modules/sockjs-client/lib/info-iframe-receiver.js

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+'use strict';
+
+var inherits = require('inherits')
+  , EventEmitter = require('events').EventEmitter
+  , JSON3 = require('json3')
+  , XHRLocalObject = require('./transport/sender/xhr-local')
+  , InfoAjax = require('./info-ajax')
+  ;
+
+function InfoReceiverIframe(transUrl) {
+  var self = this;
+  EventEmitter.call(this);
+
+  this.ir = new InfoAjax(transUrl, XHRLocalObject);
+  this.ir.once('finish', function(info, rtt) {
+    self.ir = null;
+    self.emit('message', JSON3.stringify([info, rtt]));
+  });
+}
+
+inherits(InfoReceiverIframe, EventEmitter);
+
+InfoReceiverIframe.transportName = 'iframe-info-receiver';
+
+InfoReceiverIframe.prototype.close = function() {
+  if (this.ir) {
+    this.ir.close();
+    this.ir = null;
+  }
+  this.removeAllListeners();
+};
+
+module.exports = InfoReceiverIframe;