[ejabberd] mod_irc getting user status from IRC network

[Oleg V. Motienko]

Hello!

Just read rfcs about IRC (1459,2812). So, there is beautiful command to 
get presence from IRC network (IRC clients use it to create notify list).

Let's our nick is user0; user1 and user3 is online, user2 and user4 is 
offline.

So, we send to IRC server:

ISON user1 user2 user3 user4

and got answer:

:irc.domain.ru 303 user0 :user1 user3

In jabber we see users like user1!irc.domain.ru at mod_irc.ejabber.domain 
and if we poll userlist approx every 1-3 min we can see status of IRC users.

Some IRC servers also support command WATCH. In this case they send word 
WATCH in compatibility list (005 answer, like "WATCH=128")

Information avaible on

http://www.mishscript.de/help/rawhlp6.htm#raw600
http://www.eggfaq.com/docs/raw.html

This is better way to get status, cause server sent 600 series replies 
itself instead of client polls (traffic safer).

What do you think about?

-- 
Regards, Oleg
xmpp: mmm at jabber.ttn.ru