Re: [MMUSIC] [rtcweb] Quick comments on draft-roach-rtcweb-glareless-add-00

[Paul Kyzivat <[e-mail]>]

On 5/11/13 7:50 AM, Stefan Håkansson LK wrote:
> On 5/10/13 11:20 PM, Paul Kyzivat wrote:

>> What is the probability that the other side, for independent reasons,
>> decides to make a change within that interval? (And it isn't really the
>> whole interval - it is only the first part of it.)
>
> Given that in multiparty services the "main" video changes quite often,
> I'd not say this is extremely low. It will happen.

Are you thinking that there will be an SDP change every time the speaker 
changes???

Or do you mean changes when participants join and leave a conference?

I would hope there will normally not be SDP changes for either of those 
events.

> But, given that there is a way to roll-back in a predictable way I think
> glare resolution could be quick - nothing stops the web application from
> including a random number in every offer, and resolve glare based on
> that (one of the offers "win").
>
> So I think glare will happen in practice (that is what I wanted to point
> out), but it is not a show-stopper provided there is a way to roll back.

I'm sure it will happen. The question is whether it happens often enough 
to do more than count on the normal glare recovery procedures.

	Thanks,
	Paul