It would be great if the Jabber client plugin could support BOSH.

http://xmpp.org/about-xmpp/technology-overview/bosh/ (do not confuse with cloud foundry tool)

It enables the client to speak with a jabber server, even when only HTTP is available (reverse proxies, proxies, angry firewalls, and so on).

Typical use case:

• Jabber server in a private network
• Private network only reachable via HTTP reverse-proxy in a DMZ, that is set up to proxy the BOSH implementation of the Jabber server
• Jenkins is on Internet (guys at Cloudbees may like this)

We have it working with Pidgin client, ejabberd server and Apache's mod_proxy_http