On Jun 24, 2011, at 8:27 AM, Mark Rejhon wrote:

> 2011/6/24 Remko Tronçon <[email protected]>
> Hi Mark,
> 
> On Fri, Jun 24, 2011 at 5:15 PM, Mark Rejhon <[email protected]> wrote:
> > The earlier spec covered feature negotiation via XEP-0020. However, it was
> > encouraged by a few people that spec simplification became more important,
> > and to focus chiefly on the most basic, core interop issues, at least for
> > the first published version of the specification.
> 
> How about just using Disco/Caps discovery for now, as was suggested
> earlier? I think this will make most people happy, and will only add a
> few lines to the spec. See for example XEP-0085, section 4:
> http://xmpp.org/extensions/xep-0085.html
> 
> Kurt et cetra, would this be satisfactory in the short term?

Yes.

> It would at least mean XMPP RTT would now have a basic mechanism of 
> discovering whether the other end supports RTT, and being able to restrain 
> from sending RTT if the other end does not support RTT. This would not be the 
> complete session negotiation algorithm, but would allay the cheif concern of 
> Kurt.

Correct, and it would allow for fall back to unextended XMPP if RTT was not 
available end-to-end, which I would think quite important in emergency and deaf 
communications.

-- Kurt

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