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Re: [MMUSIC] Changes for draft-ietf-mmusic-trickle-ice-sip-14 - ABNF

Christer Holmberg <christer.holmberg@ericsson.com> Mon, 07 May 2018 21:20 UTC

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From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Peter Saint-Andre <stpeter@mozilla.com>, Thomas Stach <thomass.stach@gmail.com>, MMUSIC <mmusic@ietf.org>, "pkyzivat@alum.mit.edu" <pkyzivat@alum.mit.edu>
CC: "mmusic-chairs@ietf.org" <mmusic-chairs@ietf.org>, "draft-ietf-mmusic-trickle-ice-sip@ietf.org" <draft-ietf-mmusic-trickle-ice-sip@ietf.org>
Thread-Topic: [MMUSIC] Changes for draft-ietf-mmusic-trickle-ice-sip-14 - ABNF
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Date: Mon, 07 May 2018 21:20:16 +0000
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Subject: Re: [MMUSIC] Changes for draft-ietf-mmusic-trickle-ice-sip-14 - ABNF
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Hi,

>>>> However, I think there are some issue with the ABNF (not related to 
>>>> Adam¹s issue).
>>>>
>>>> For example, the syntax says:
>>>>
>>>>   ice-pwd-attribute      = %s"a" "=" ice-pwd-att
>>>>
>>>> Then the draft says:
>>>>
>>>>   with ice-pwd-attribute from [I-D.ietf-mmusic-ice-sip-sdp],
>>>
>>> which says
>>>
>>> ice-pwd-att           = "ice-pwd:" password
>>> i.e. doesn't introduce a second a=
>> 
>> First, I think the structure in draft-ice-sip-sdp is wrong. It shall be something like:
>> 
>>       Attribute Name: ice-pwd
>> 
>>       Attribute Value: ice-pwd-att
>> 
>>       Usage Level: media
>> 
>>       Charset Dependent: No
>> 
>>       Mux Category: TBD
>> 
>>     The Augmented BNF syntax [RFC5234] for the attribute is:
>> 
>>       ice-pwd-att = password
>>       password = blah blah...
>> 
>> Now, whether we should use that syntax also in trickle-ice I don't know.
>
> Do you mean in draft-ietf-mmusic-trickle-ice-sip or in draft-ietf-ice-trickle? The latter document contains no ABNF definitions.

I mean draft-ietf-mmusic-trickle-ice-sip.

Regards,

Christer

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