Am 16.07.2009 um 14:59 schrieb Pedro Melo:
2.) You know when you got all presences and then definitely know if somebody is online without waiting 10 minutes just in case you didn't get the initial presence yet.[…]the 2) is possible today. <presence> with jabber:x:delay are "initial" presences, in response to presence probes. Without a jabber:x:delay , they are not.
Not exactly - you still don't know whether you have received all initial presences yet or if there are still initial presences to come.
You are assuming that the server can even have access to all presences at any point in time...Think about server restarts. I think Jabber.org has around 500k accounts. Is the server expected to send a presence probe to each distinct contact in those 500k roster just to have a clear picture of each user roster presence just so you can have your single stanza?
It would only need to do that on startup, so not a real problem.
Do you really think this is a good idea?
Servers shouldn't be restarted all the time anyway, so yes, I think this won't be a big problem.
-- Jonathan
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