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Re: [MMUSIC] [rtcweb] Default proto transport in JSEP

Roman Shpount <roman@telurix.com> Tue, 20 November 2018 06:26 UTC

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From: Roman Shpount <roman@telurix.com>
Date: Tue, 20 Nov 2018 01:26:28 -0500
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To: Justin Uberti <juberti@google.com>
Cc: Iñaki Baz Castillo <ibc@aliax.net>, RTCWeb IETF <rtcweb@ietf.org>, mmusic WG <mmusic@ietf.org>
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Subject: Re: [MMUSIC] [rtcweb] Default proto transport in JSEP
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On Tue, Nov 20, 2018 at 1:15 AM Roman Shpount <roman@telurix.com> wrote:

> On Tue, Nov 20, 2018 at 12:58 AM Justin Uberti <juberti@google.com> wrote:
>
>> Anyway, we have the 3 choices listed below. We differ on which is the
>> most pragmatic solution. If the WG has enough voices in support of #2 or #3
>> to overturn the consensus of #1 from IETF 103, I will write it up
>> accordingly.
>>
>
> So the 3 choices are:
>
> 1) (current) Match IP and port, but stipulate an exact proto value -- This
> choice is not compliant with either RFC 5245 or draft ice-sip-sdp. If
> this is selected, ice-sip-sdp will need to be updated
> 2) Match IP, port and proto -- Compliant with both RFC 5245 and
> ice-sip-sdp
> 3) Set IP, port, and proto to fixed values -- Compliant with only
> ice-sip-sdp but not with RFC 5245
>

P.S. There is a compromise option 4) Proto is fixed (UDP).  If default
candidate is UDP, address and port should match the candidate. If default
candidate is TCP, set address to IN IP4 0.0.0.0 and port to 9. This is
compliant with both RFC 5245 and ice-sip-sdp for UDP default candidates,
but only compliant with ice-sip-sdp for TCP default candidates.

Regards,
_____________
Roman Shpount

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