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Re: [rtcweb] Replacing a=extmap mapping in re-offer, is it legal?

Christer Holmberg <christer.holmberg@ericsson.com> Mon, 07 August 2017 18:07 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Iñaki Baz Castillo <ibc@aliax.net>
CC: Taylor Brandstetter <deadbeef@google.com>, "rtcweb@ietf.org" <rtcweb@ietf.org>
Thread-Topic: [rtcweb] Replacing a=extmap mapping in re-offer, is it legal?
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Date: Mon, 07 Aug 2017 18:06:56 +0000
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Subject: Re: [rtcweb] Replacing a=extmap mapping in re-offer, is it legal?
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Hi,

>> Taylor's explanation makes sense. But, in this case:
>>
>> 1) Re-using the same value with a new mapping should be an explicit 
>> MUST NOT
>>
>> 2) The re-offer should be rejected
>
> Hi Christer, I'm lost. If Taylor's explanation is ok, why 1) and 2)?

Maybe I was unclear :)

Taylor described why re-using a value for a new mapping doesn't work. I think that should be explicitly described, and the text should say MUST NOT re-use value for new mapping (hence 1).

Second, IF an offerer still tries to re-use a value for a new mapping, the text should say that the receiver MUST discard the offer (hence 2).

Regards,

Christer

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