On 1/29/10 11:21 AM, Justin Karneges wrote: > 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? Hmm, it seems that version -03 of 3921bis already contained this text: If a server receives a presence probe intended for a full JID <contact at domain/resource>, it SHOULD handle it on behalf of the connected resource by returning only the presence information for that particular resource (and in any case MUST NOT deliver it to the resource). I can't even read my own specs... Peter -- Peter Saint-Andre https://stpeter.im/
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