title: Using easyXDM to communicate between parent document and child iframe loaded from a different domain (amazon)
body: <p>I'm trying to use easyXDM to communicate between parent document and child iframe (loaded from a different domain - amazon). The iframe src is an oauth signed url and has the following code to communicate with the parent document that loads it:</p>
  
  <pre><code>socket = new easyXDM.Socket({
      remote: "http://localhost:56789/hitch.html", /* parent document */
      remoteHelper: "http://localhost:56789/easyXDM/name.html",
      onMessage: function(message, origin){
          alert("Received '" + message + "' from '" + origin + "'");
      },
      onReady: function() {
          socket.postMessage("Yay, it works!");
      }
  });
  </code></pre>
  
  <p>the above code is kept in the head portion of the document.</p>
  
  <p>In parent (hitch.html):</p>
  
  <pre><code>var transport = new easyXDM.Socket(/** The configuration */{
      local: "/easyXDM/name.html",
      swf: "/easyXDM/easyxdm.swf",
      onMessage: function(message, origin){
         transport.postMessage("This is a message received from " + location);
      }
  });
  </code></pre>
  
  <p>When I load the child iframe from amazonS3 inside the parent document, easyXDM is creating another iframe inside the child iframe with src set to "http://localhost:56789/hitch.html?xdm_e=..." . This causes the whole thing to be repeated in a cycle - with parent again trying to load the child iframe and so on.</p>
  
  <p>I'm testing on Firefox 9.0 which has postMessage support. The actual messages are being sent properly and I can see the message boxes. Other than this, it also throws a "url is undefined or empty" error in parent document when initializing easyXDM.socket but it doesn't seem to affect  anything else...</p>
  
  <p>Thanks,</p>