[Standards-JIG] rfc3921bis, RC3

Peter Saint-Andre stpeter at jabber.org
Fri Oct 13 16:26:34 UTC 2006

Ian Paterson wrote:
> Peter Saint-Andre wrote:
>> <snip/>
>> Oh, and the stuff about probes related to directed presence is here:
>> http://www.xmpp.org/internet-drafts/draft-saintandre-rfc3921bis-00.html#presence-directed
> The recipient already knows the content of the directed available
> presence stanza it received. So, IMO, if the user is still available the
> server should only respond to the probe with an *empty* presence stanza.
> Returning the "last broadcasted available presence" may well leak
> information that the other entity has no right to, and/or provide
> incorrect information (e.g. if I'm DND to everyone except the occupants
> of a room).

Tough luck? Or maybe just send an empty presence packet if the user is
still online? All we really care about here is determining whether the
entity that sent directed presence is still online or has gone offline.

> Also I think it would be helpful to indicate that once the client has
> gone offline then the server should respond to a probe with the same
> error as if the other entity had never been sent directed presence (i.e.
> as soon as the client goes offline the server can forget about any
> directed presence it sent on the client's behalf).

Yes, that's the desired behavior.


Peter Saint-Andre
Jabber Software Foundation

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