title: Is it possible to have multiple XMPP App Server connected to Google Cloud Messaging to handle Upstream messages?
body: <p>i just began Android development, and i am currently testing GCM.</p>
  
  <p>I wrote a PHP server (with Jaxl) that handle upstream message, no problem.
  Then i wrote a Java server (with Smack). No problem either.</p>
  
  <p><strong>But when the both are connected to GCM, messages are sent to one or another, never both of them.</strong></p>
  
  <p>Is it possible ? 
  If no, have you got a hint to "share" those messages between servers (for security, to handle millions of messages...)</p>
  
  <p>Thanx, and sorry if my question is very noob...</p>
  
  <p>edit: i tried with one server API key, and also with 2 :)</p>