Can anyone explain how an XMPP server pushes data to an XMPP client? This client will most likely be behind a firewall and will not have its own IP on the Internet so how can the client be notified? Does the client leave a connection open with the server at all times?
+4
A:
It depends on the type of connection: HTTP polling or a direct TCP/IP connection over port 5222.
HTTP polling relies on the client sending a long-running HTTP request (Comet-style) to the server and waiting for replies.
Direct TCP/IP connection keeps a connection open to the server at all times.
Jon Benedicto
2010-10-05 17:11:34
+3
A:
XMPP is a TCP/IP connection that is kept alive. So if you're client is able to connect to an XMPP server, said server will be able to send data to the client.
Julien Genestoux
2010-10-05 17:14:21