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Re: [rtcweb] Working Group Last Call: draft-ietf-rtcweb-jsep-19.txt

Eric Rescorla <ekr@rtfm.com> Fri, 24 March 2017 18:53 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Fri, 24 Mar 2017 11:52:56 -0700
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To: Magnus Westerlund <magnus.westerlund@ericsson.com>
Cc: Ted Hardie <ted.ietf@gmail.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>, Sean Turner <sean@sn3rd.com>, Cullen Jennings <fluffy@cisco.com>
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Subject: Re: [rtcweb] Working Group Last Call: draft-ietf-rtcweb-jsep-19.txt
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PR welcome.

-Ekr


On Fri, Mar 24, 2017 at 8:37 AM, Magnus Westerlund <
magnus.westerlund@ericsson.com> wrote:

> Den 2017-03-24 kl. 16:17, skrev Eric Rescorla:
>
>>
>>
>> On Fri, Mar 24, 2017 at 6:23 AM, Magnus Westerlund
>> <magnus.westerlund@ericsson.com <mailto:magnus.westerlund@ericsson.com>>
>> wrote:
>>
>>     2. Section 5.1.2:
>>
>>        o  The profile in any "m=" line in any answer MUST exactly match
>> the
>>           profile provided in the offer.
>>
>>        o  Any profile matching the following patterns MUST be accepted:
>>           "RTP/[S]AVP[F]" and "(UDP/TCP)/TLS/RTP/SAVP[F]"
>>
>>     These two are in conflict in cases when the answer to an
>>     "UDP/TLS/RTP/SAVPF" offer comes back as UDP/TLS/RTP/SAVP. Then the
>>     first can't be fulfilled, but the second is. Isn't the rule "It
>>     either is an exact match or matches the following patterns"?
>>
>>
>> They are not in conflict. The first is about what you send. The second
>> is about what you accept.
>>
>>
> Ok, but the received vs send directionality is not at all clear in the
> first bullet. The accept in the second bullet, implies a received SDP. I
> would propose that the first bullet is ammended to include a "in any answer
> generated by the JSEP implementation MUST exactly ..." or similar.
>
>
> Cheers
>
> Magnus Westerlund
>
> ----------------------------------------------------------------------
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