On 05/28/2008 12:44 PM, Robert McQueen wrote:
> Peter Saint-Andre wrote:
>> Therefore I think the content-replace action is unnecessary in XEP-0176
>> (since nomination in the Jingle ICE-UDP transport will also occur over
>> STUN and does not need to happen in the signalling channel).
>>
>> Unless there are objections, I will update XEP-0176 accordingly (a usage
>> inherited by some of the examples in XEP-0167 and XEP-0180, which will
>> be harmonized with the modified XEP-0176).
> 
> +1 from me. My gut feeling is that content-replace is more of a content
> apocalypse in terms of implementations. I don't think it's reasonable to
> expect people to have to diff content descriptions and transports in
> normal operation - it should have a similar semantic/behaviour as
> content-remove and content-add delivered simultaneously.

Hmm.

I agree that content-replace should be equivalent to simultaneous
content-remove and content-add. I thought it was, but perhaps I was
wrong. :)

However, it seems that we need content-replace during PENDING in order
to handle certain fallback use cases (see the thread on Jingle file
transfer). I am going to update XEP-0234 to use this model so that we
can see if it will solve the fallback problem in a more elegant way. If
so, I may request that we allow content-replace during PENDING.

More soon. :)

Peter

-- 
Peter Saint-Andre
https://stpeter.im/

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