Now we know all about joining and sending and receiving messages in a multiuser chat room, but one thing we haven't discussed so far is finding the darn things! Let's make that right.

As with most things in XMPP, if you as a user are trying to find out what things are there and what they do, you lean on your old friend DISCO. Let's look at a typical round trip to find an MUC room that we're interested in. First, we make a DISCO#info request to the server to see what features it supports:

<iq type='get' id='query1' 
from='[email protected]/dining-room' 
to='chat.baines.fam'> 
  <query xmlns='http://jabber.org/protocol/disco#info'/> 
</iq> 

The server will then return a list of features supported (note that this could potentially be a long list if the server supports a lot of features!):

<iq type='result' id='query1' 
from='chat.baines.fam' 
to='[email protected]/dining-room'> 
    <query xmlns='http://jabber...