Re: [rtcweb] Multiplexing using the same port number for multiple media descritions

Harald Alvestrand <harald@alvestrand.no> Wed, 31 August 2011 14:54 UTC

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Date: Wed, 31 Aug 2011 16:55:53 +0200
From: Harald Alvestrand <harald@alvestrand.no>
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Subject: Re: [rtcweb] Multiplexing using the same port number for multiple media descritions
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On 08/30/11 21:27, Christer Holmberg wrote:
> Hi Justin,
>
>> I think Harald's approach is cleaner, since the fallback does not require a new offer.
>>
>> What do you see as problematic with Harald's suggestion?
> I have sent comments on Harald's draft, but my main issues are:
>
> 1. Unclear how to remove the m- line which is used for the multiplexed stream.
>
> (Maybe Harald has indicated somewhere how it would be done, and in that case I appologise for having missed it)
>
>
> 2. Intermediaries that do not understand the extension would still think that there are individual streams, and reserve resources etc accordingly.
Would those intermediaries understand the double usage in your proposal?
> (Now, maybe there aren't such intermediaries in a web environment. But as CLUE very likely will also need some kind of a multiplex negotiation mechanism I would like to see something more general).