[JDEV] One more newbie question

[Michaël Fiey]

Hi,

I'm a newbie with Jabber and very impressed and I try to understand how the system work...
My questions are :
how does a client receive his messages ?
Does he need to have a permanent connection to a server (tcp socket) which send him his new received messages or does he regularly ask a server for his new messages ?
To be a little bit clearer : is it a real connected system, or does the client send system messages to his server to say "I'm here", "I'm here", ... "I'm leaving".

Thanks for your help
 
Michael (from Paris)
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