Re: [xmpp] 3921bis: probe to full JID?

[Justin Karneges <justin at affinix.com>]

On Friday 29 January 2010 03:09:05 you wrote:
> Hi,
>
> On Fri, Jan 29, 2010 at 4:22 AM, Justin Karneges <justin at affinix.com> wrote:
> > Any sent stanza acts as a probe here, at least for discovering s2s
> > connection errors.  If enough time passes in a room and nobody has
> > joined, changed status, left, or sent a message, then it's probably not
> > unreasonable to suggest that all of the participants be sent /something/
> > to induce a bounce.
>
> Agreed, but /something/ need not be a presence probe, given that you
> would be asking the wrong question.
>
> With a presence probe you are asking "are you still online?", but what
> you want is "are you still connected to this room?".

Actually the presence probe is the right question.  That is the one which 
asks, "are you still connected to this room?" because it finds out if the 
user's server still believes the MUC is allowed to have the user's presence.

If we want to ask the lesser question: "are you still online?", then I suggest 
the MUC send the user's own presence again to himself.  Maybe this the 
harmless one-way communication we can suggest in XEP-0045?

-Justin