[jdev] last presence confusion

Maciek Niedzielski machekku at uaznia.net
Fri Jan 25 09:06:33 CST 2008

On Sat, Dec 22, 2007 at 12:23:38PM -0800, Justin Karneges wrote:
> On Thursday 20 December 2007 2:52 pm, Peter Saint-Andre wrote:
> >    2.  Else, if the contact has no available resources, the server MUST
> >        either (1) reply to the presence probe by sending to the user the
> >        full XML of the last presence stanza of type "unavailable"
> >        received by the server from the contact, or (2) not reply at all.
> > So a nice server will return the last unavailable presence information
> > (with a Delayed Delivery flag), thus obviating the need for a flood of
> > jabber:iq:last requests.
> How about emphasizing the first option as a SHOULD?  This would hopefully 
> encourage new servers to always reply, while not causing existing servers to 
> become non-compliant.
On the other hand, usually just 1/3 of my roster is online. So if server
starts sending presence for all contacts, initial "presence flood" from
the server increases 3 times.

Maciek Niedzielski
 xmpp:machekku at uaznia.net

More information about the JDev mailing list