You can see mod_vcard.erl,

mfoss — Tue, 01 Jul 2008 18:36:16 +0000

I don't remember doing this exactly, so I'll just give some points. I hope some of them give you a good idea to solve the problem:

You can see mod_vcard.erl, it handles some IQ namespace:

   IQDisc = gen_mod:get_opt(iqdisc, Opts, one_queue),
    gen_iq_handler:add_iq_handler(ejabberd_local, Host, ?NS_VCARD,
				  ?MODULE, process_local_iq, IQDisc),
    gen_iq_handler:add_iq_handler(ejabberd_sm, Host, ?NS_VCARD,
				  ?MODULE, process_sm_iq, IQDisc),

You can also look at mod_caps. That module performs many tasks, one of them: send an IQ query to discover features of remote Jabber servers; and when the response is received, parse it and store information.

Or you can implement a jabber component (like mod_echo, mod_vcard, mod_pubsub, mod_muc, ...), so you have your own JID (test.example.org or whatever), and you can do whatever you want with IQ :)

ejabberd - Comments for "Sending IQ Packets To Clients"

You can see mod_vcard.erl,