On 7/15/13 11:31 PM, Justin Karneges wrote: > Hey folks, > > For awhile I've been designing systems whereby any entity announcing > presence has the responsibility of continuously refreshing this > presence. I've even done this within XMPP by including a <ttl> element > in the presence stanza indicating a timeout value. If the receiving > entity does not receive a new presence stanza within this time period > then it considers the sending entity to be unavailable. I prefer this to > the practice of the receiving entity having to periodically probe > whoever it has received presence from. The end result is pretty much the > same, but to me it feels cleaner to put this responsibility on the sender. > > I wonder if it couldn't hurt to standardize a simple thing like this? > > <presence from="alice" to="bob"> > <status>I'm here</status> > <ttl xmlns="urn:xmpp:tmp:ttl">600</ttl> > </presence> > > Given the above directed presence, Bob would expect another presence > stanza from Alice within 10 minutes.
Seems useful. Would it apply only to presence? Peter -- Peter Saint-Andre https://stpeter.im/
