IETF Logo Mail Archive

Re: [MMUSIC] Not fixing a=rtcp and rtcp-mux exclusive

Christer Holmberg <christer.holmberg@ericsson.com> Mon, 25 January 2016 07:36 UTC

Return-Path: <christer.holmberg@ericsson.com>
X-Original-To: mmusic@ietfa.amsl.com
Delivered-To: mmusic@ietfa.amsl.com
Received: from localhost (ietfa.amsl.com [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id B62881AD26B for <mmusic@ietfa.amsl.com>; Sun, 24 Jan 2016 23:36:36 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.6
X-Spam-Level:
X-Spam-Status: No, score=-3.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, J_CHICKENPOX_14=0.6, RCVD_IN_DNSWL_MED=-2.3] autolearn=ham
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LuC-2tCPiByB for <mmusic@ietfa.amsl.com>; Sun, 24 Jan 2016 23:36:35 -0800 (PST)
Received: from sessmg22.ericsson.net (sessmg22.ericsson.net [193.180.251.58]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 290B31AD21C for <mmusic@ietf.org>; Sun, 24 Jan 2016 23:36:35 -0800 (PST)
X-AuditID: c1b4fb3a-f79df6d0000013b1-67-56a5d0807754
Received: from ESESSHC016.ericsson.se (Unknown_Domain [153.88.183.66]) by sessmg22.ericsson.net (Symantec Mail Security) with SMTP id A1.71.05041.080D5A65; Mon, 25 Jan 2016 08:36:32 +0100 (CET)
Received: from ESESSMB209.ericsson.se ([169.254.9.166]) by ESESSHC016.ericsson.se ([153.88.183.66]) with mapi id 14.03.0248.002; Mon, 25 Jan 2016 08:36:31 +0100
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: Suhas Nandakumar <suhasietf@gmail.com>, Roman Shpount <roman@telurix.com>
Thread-Topic: [MMUSIC] Not fixing a=rtcp and rtcp-mux exclusive
Thread-Index: AQHRVH5u5HwUiLpiFk2f5BpmhdG86J8GeIug///94ICAAL0LkIAAOGowgABaTACAAV0qoIAAIcaAgAEX24CAAX87kA==
Date: Mon, 25 Jan 2016 07:36:31 +0000
Message-ID: <7594FB04B1934943A5C02806D1A2204B37D59386@ESESSMB209.ericsson.se>
References: <CAD5OKxvMdsdkYaJWB5UdvCTNj3a+pheXV+_1viyLrH_UOWBTpA@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B37D5509D@ESESSMB209.ericsson.se> <CAD5OKxum=E84NVTtWtSwYowDmyJ=sQifx6Na9wt0pUhYH1j_PA@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B37D557C6@ESESSMB209.ericsson.se> <7594FB04B1934943A5C02806D1A2204B37D55EAA@ESESSMB209.ericsson.se> <CAD5OKxvaUi25TbOa48mKwkEJMnJqde_TQNfe1Cagdgj+jTbJ3g@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B37D57EFC@ESESSMB209.ericsson.se> <CAD5OKxuRwgs0w0iUorivK6BV_8bZNNN1D9w9ot4CVJ7CV-6xpw@mail.gmail.com> <CAMRcRGTDpXMdk9SqQtRCc+LyQff26-5NiV6er6dkbdJzJLEwAQ@mail.gmail.com>
In-Reply-To: <CAMRcRGTDpXMdk9SqQtRCc+LyQff26-5NiV6er6dkbdJzJLEwAQ@mail.gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
x-originating-ip: [153.88.183.18]
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBIsWRmVeSWpSXmKPExsUyM2K7k27DhaVhBheW61pMXf6YxWLFhgOs FjMuTGW22Dm3g9mBxePv+w9MHjtn3WX3WLLkJ5PHrSkFASxRXDYpqTmZZalF+nYJXBkXX39m LtjFVnF00UW2BsYlbF2MnBwSAiYSXfsXQtliEhfurQeyuTiEBA4zSqx5tZ8RwlnCKLHlTTtL FyMHB5uAhUT3P22QBhEBX4mdc5pYQWxmIPv9z+nsILawgJ1E8+n1zBA19hKn1n5ghLCzJE4t OQUWZxFQlTh+8C4jyEheoN5pl0ohVv1hkVi5axnYKk6BQInOZR4g5YxAt30/tYYJYpW4xK0n 85kgbhaQWLLnPDOELSrx8vE/VghbUeLjq31g45kFNCXW79KHaFWUmNL9EOxKXgFBiZMzn7BM YBSbhWTqLISOWUg6ZiHpWMDIsopRtDi1uDg33chIL7UoM7m4OD9PLy+1ZBMjML4ObvlttYPx 4HPHQ4wCHIxKPLwF4UvDhFgTy4orcw8xSnAwK4nwLt4PFOJNSaysSi3Kjy8qzUktPsQozcGi JM57kH9RmJBAemJJanZqakFqEUyWiYNTqoFRteW3xa+uyAPap1qPldhxLJuaP1Xz9FXhfT5d lx2PT7a6aMsfGtrteuKs4ud/qeVajblH7fL+VHWs68pYI69iWXfkJdvbu2Fnnvin7tx1ento Xlz+wun2Uw8LCR9MfRR/pW1OqnBGmPDKstL71pcvzHNpPZRv+bs0wki/qLVbm01xkYDSltdK LMUZiYZazEXFiQDl31InqwIAAA==
Archived-At: <http://mailarchive.ietf.org/arch/msg/mmusic/t6EltqE02c3eGSsgwcq2HZ3IuVM>
Cc: "mmusic@ietf.org" <mmusic@ietf.org>, Paul Kyzivat <pkyzivat@alum.mit.edu>
Subject: Re: [MMUSIC] Not fixing a=rtcp and rtcp-mux exclusive
X-BeenThere: mmusic@ietf.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: Multiparty Multimedia Session Control Working Group <mmusic.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/mmusic>, <mailto:mmusic-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/mmusic/>
List-Post: <mailto:mmusic@ietf.org>
List-Help: <mailto:mmusic-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/mmusic>, <mailto:mmusic-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 25 Jan 2016 07:36:36 -0000

Hi,

...

>When ICE is in usage and the Offer want to support a=rtcp-mux-only, it does the following
>a) include a=rtcp-mux-only
>b) include a=rtcp <rtp-port> <-- RTP port
>c) include RTCP candidate with port information that matches RTP. No need to do new turn allocation for RTCP either.

Note that suggested ICE text says that if an entity only supports mux there is no need to include RTCP candidates. Instead the entity will only include RTP candidates (there are other mechanisms to indicate whether the entity doesn't support/want to use RTCP to begin with).

Regards,

Christer

v2.23.0 | Report a Bug | By Email