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Re: [Perc] Drop support for E2E RTP header extensions

Roni Even <roni.even@huawei.com> Wed, 17 May 2017 08:53 UTC

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From: Roni Even <roni.even@huawei.com>
To: Sergio Garcia Murillo <sergio.garcia.murillo@gmail.com>, Cullen Jennings <fluffy@iii.ca>, Paul Jones <paulej@packetizer.com>
CC: "perc@ietf.org" <perc@ietf.org>
Thread-Topic: [Perc] Drop support for E2E RTP header extensions
Thread-Index: AQHSzuAr4xPDIVqlkkantSV9zNI526H4NmaQ
Date: Wed, 17 May 2017 08:49:09 +0000
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References: <49c7de34-8bc6-bb7d-4524-0af26089eecb@gmail.com> <1CF6F66C-939F-484D-8C53-46ACB8CA69BE@vidyo.com> <27ca2993-5c66-8388-7187-b47ed8ae1340@gmail.com> <CAL02cgRDaz7BT+GzxWJ0cM7rebhd2cu2WbPy+Mwjkk0wJK=6mw@mail.gmail.com> <aef9a32f-f761-c9e8-de99-57c4acfd5088@gmail.com> <8FD07F5D-CD52-445B-AF75-BA1696F3A151@mozilla.com> <aff1a9bf-7dcb-71e6-3d01-afe5cac87ca5@gmail.com> <E234DDC1-9AB5-4C64-91C0-A8FCB58DA351@iii.ca> <8ddbf495-ac23-8529-aa0b-a233a0b336c0@gmail.com> <74BE8407-9AC0-45D3-9476-5C109A7B7A3C@iii.ca> <286A6294-EC1E-49D3-88BB-023178DB07BD@packetizer.com> <2810AD6C-0F45-41CC-BC6F-4303B5649CB0@iii.ca> <em9a829f3a-e2ed-4250-8e7e-cad6623a30a2@sydney> <FD826FBD-6D15-4791-8C9F-450E83EA1EC6@iii.ca> <eme27e4a00-19ad-48da-bd9e-1e8bfb69ca8f@sydney> <87C7FDA2-3F7B-4037-BD5D-71BF5D71BC27@iii.ca> <6E58094ECC8D8344914996DAD28F1CCD7CBDE1@DGGEMM506-MBX.china.huawei.com> <9ed0ac20-8baa-1e5f-83e0-61071d484796@gmail.com>
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Subject: Re: [Perc] Drop support for E2E RTP header extensions
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Ser,
Cullen in point 2 was proposing to signal that the extensions are not supported even though they can support it, so my comment was about being cautious in this case, it may break application logic. 
Roni

> -----Original Message-----
> From: Sergio Garcia Murillo [mailto:sergio.garcia.murillo@gmail.com]
> Sent: יום ד 17 מאי 2017 10:35
> To: Roni Even; Cullen Jennings; Paul Jones
> Cc: perc@ietf.org
> Subject: Re: [Perc] Drop support for E2E RTP header extensions
> 
> On 17/05/2017 7:23, Roni Even wrote:
> > As for dropping RTP header extensions, the 5285-bis draft says
> "intermediaries aware of the RTP  header extensions are advised to be
> cautious when removing or  generating RTP header extensions see section
> 4.7 of [RFC7667]."
> >
> >
> Note that an MD or any intermediary can't drop any E2E RTP header
> extension present in an rtp packet as it will break the inner crypto and will
> prevent the final endpoint to be able to decrypt it.
> 
> BR
> Ser

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