al Overview</a>.</p>

<h2 id="usage">How to Use CCS</h2>

<p>GCM Cloud Connection Server (CCS) is an XMPP endpoint, running on <code>http://gcm.googleapis.com</code> port 5235.</p>

<p>CCS requires a Transport Layer Security (TLS) connection. That means the  XMPP client must initiate a TLS connection.
For example in smack, you would call <code>setSocketFactory(SSLSocketFactory)</code>, similar to “old style SSL” XMPP connections and https.</p>

<p>CCS requires a SASL PLAIN authentication mechanism using