XMPP stanza for sending the upstream message. The message goes from the app on the device to CCS to the 3rd-party server. The stanza has the following format:</p>

<pre>&lt;message id=&quot;&quot;&gt;
  &lt;gcm xmlns=&quot;google:mobile:data&quot;&gt;
  {
      &quot;category&quot;:&quot;com.example.yourapp&quot;, // to know which app sent it
      &quot;data&quot;:
      {
          &quot;hello&quot;:&quot;world&quot;,
      },
      &quot;message_id&quot;:&quot;m-123&quot;,
      &quot;from&quot;:&quot;RE