[Standards] mobile optimizations

Joe Hildebrand hildjj at gmail.com
Tue Feb 19 15:00:36 UTC 2008

Could this be added to XEP-198?  Basically a pause command that would  
cause stuff to get buffered on the server.  There would need to be an  
ack that comes back to avoid races.  Additionally, I could imagine the  
thing doing the buffering could toss old stale presence stanzas when  
new ones are received from the same full jid.

Combined with XEP-198 quick-reconnects (or BOSH) with long server-side  
timeouts, and it seems pretty efficient for this use case, at the  
expense of some DEFLATE performance.

On Feb 19, 2008, at 2:47 AM, Fabio Forno wrote:

> On Feb 16, 2008 6:10 AM, Peter Saint-Andre <stpeter at stpeter.im> wrote:
>> It would be good to analyze the relative percentage of presence to
>> messages. My sense from watching the XML console in Psi is that  
>> most of
>> the "noise" is presence.
>> In general I think it might be difficult to determine which stanzas  
>> are
>> worth waking up for (some messages might just be PEP  
>> notifications), but
>> ignoring presence seems like a good start.
> I must study how privacy lists work (don't know if they need some
> extension or we can use them in this way), but the best solution in
> this case seems a set of privacy rules allowing asymmetric presence
> distribution. When I'm online with a mobile there may be at least
> three groups of users:
> - symmetric presence exchange (as it works now, I want being
> constantly informed about their status and let them know mine)
> - asymmetric presence: let them know my status, but don't update me
> with theirs until they do some action (e.g. a message) or I query
> explicetely
> - no presence at all: don't bother with these contacts when I'm with  
> a mobile
> -- 
> Fabio Forno, Ph.D.
> Bluendo srl http://www.bluendo.com
> jabber id: ff at jabber.bluendo.com

Joe Hildebrand

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