Service discovery of mod_proxy65 with mod_disco

Hi everyone

Most XMPP clients often have a file transfer proxy address already set.
But I wanted to try and use our own proxy. I've enabled mod_proxy65 and it seems to work as desired.

But has anyone tried to use mod_disco to allow the client to auto-discover the file transfer proxy?
According to this in XEP-0065 it should be possible... http://xmpp.org/extensions/xep-0065.html#disco

Obviously this still relies on the client supporting the auto-discovery but I'm just curious to see if there's a way to get this setup on the server side.

Cheers, B