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To listen for new IQ requests, add the appropriate entry in
jabber-iq-get-xmlns-alist or jabber-iq-set-xmlns-alist.
The key is the namespace of the request, and the value is a function
that takes two arguments, the connection object, and
the entire IQ stanza in list format.
jabber-process-iq reads these alists to determine which
function to call on incoming packets.
For example, the Ad-Hoc Commands module contains the following:
(add-to-list 'jabber-iq-set-xmlns-alist
(cons "http://jabber.org/protocol/commands"
'jabber-ahc-process))
To send a response to an IQ request, use ‘(jabber-send-iq
connection sender "result" query nil nil nil nil
id)’, where query is the query in list format.
jabber-send-iq will encapsulate the query in an IQ packet with
the specified id.
To return an error to the Jabber entity that sent the query, use
jabber-signal-error. The signal is caught by
jabber-process-iq, which takes care of sending the error.
You can also use jabber-send-iq-error.