Google GCM demo app - Server messages not being received <p>I am trying to get the Google GCM demo app up and running. My android emulator makes a successful connection to the GCM server and goes on to make successful connection to my own server which is located at <code>http://localhost:8080/gcm-demo-server</code> (ie. the emulator sends the request to <code>http://10.0.2.2:8080/gcm-demo-server</code>).</p> <p>However when I click 'Send message' on my server's webpage the message doesn't get delivered to the emulator. Nothing shows up in Logcat and my breakpoint in onMessage() in the GCMIntentService class doesn't get hit.</p> <p>I can't understand how it can successfully register with the server, passing it's registrationId, yet when that registrationId is used to send a message back to the emulator it doesn't get received. I have not altered the demo app code.</p> <p>Anyone ideas what could be going where or where I could start looking for problems as I don't even know where to start with this.</p>