[Operators] Using XMPP server behind proxy / NAT

[Thomas Leister]

Hi operators!

Is there any kind of technology which lets my Prosody XMPP server or any
other XMPP server receive a client's IP address even behind a NAT or a
HAProxy? We do have Proxy Headers for HTTP, but is there something
similar for XMPP?

I'd like to run Prosody behind a HAProxy server and at the same time log
the clients' IP-addresses when auth fails.

Kind regards,
Thomas