IETF Logo Mail Archive

Re: [MMUSIC] BUNDLE: no reason por payload type to be unique within bundled m= lines

Iñaki Baz Castillo <ibc@aliax.net> Wed, 09 March 2016 10:57 UTC

Return-Path: <ibc@aliax.net>
X-Original-To: mmusic@ietfa.amsl.com
Delivered-To: mmusic@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 7FEE912D5DE for <mmusic@ietfa.amsl.com>; Wed, 9 Mar 2016 02:57:40 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=aliax-net.20150623.gappssmtp.com
Received: from mail.ietf.org ([127.0.0.1]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mYnUg0-9QXQx for <mmusic@ietfa.amsl.com>; Wed, 9 Mar 2016 02:57:39 -0800 (PST)
Received: from mail-yk0-x229.google.com (mail-yk0-x229.google.com [IPv6:2607:f8b0:4002:c07::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id D1E8D12D5BB for <mmusic@ietf.org>; Wed, 9 Mar 2016 02:57:38 -0800 (PST)
Received: by mail-yk0-x229.google.com with SMTP id x17so18830790ykd.1 for <mmusic@ietf.org>; Wed, 09 Mar 2016 02:57:38 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aliax-net.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=kRU0hP86u48FPbdOwQN9jl0qcfi9g2k3vbQgYNjsLT0=; b=mKhqGHmqxlTdZFXU+nFzYaP6JH2ez9LG+0l0yXQBRg62vb0hCNMP+pqOE+MQWObRYL MR5HKgkwlPgrIw6qXFv2xel7wIL4swpaMzWCylEOs/ajHdhux3BmZ60V1uYZ+zAQUvBH 8w2Ba7i9ioZk45/ZzyGqCm3bnJkO1N/2xIGumevGCJFvYkNkgjrGaIZjmBC8+ncvMguA LcTdVStybHGoryGf2lZEBxGPGj3g7boM9T/GjY3rvQulKTaedIk8EjQasRLVAbj/7OFO by7Rs5AYl7oC2toVe6HNrtTTbnhlSERvK3CCqgN1i4YjschRLplM/kO8QI5o+Z+SjnFX EAAA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=kRU0hP86u48FPbdOwQN9jl0qcfi9g2k3vbQgYNjsLT0=; b=JbSeseF/eknOf34/NqYYFArqHKNSwqGTW5o05zE8hXlEW2MkKEoK/VGOFA0fKMEPi3 hAGeqUZUMixfJmMd4IeTBojD+R+gJQo9nPfBXXN8IuOCpSdL1ZDhlTf/rguUihckK8Pm UfXnXQLrh1YHzf2sa37Lw+57N7QMoO5FJJ2arUDXcSbGVLH1CqS8SgNBQ045+MqPuMWl KLcgSN80We+j9AqwkJE45JZCzYCjMQqh5ruj7ZmfMXVOr0iayyVqnbZPrPgS7WZlL1zr mOi5ck72CyCyzG+cZK5vsChdihdpdbmKmYs+uQC/htyDxo+TgmmPGDXBm7ylg0r1ZAa+ /9HQ==
X-Gm-Message-State: AD7BkJKBBz7fVu5o8c2w4tMxvlxnbTqG4PMZzxIuFxwMMsEq7Oou1JhcZY7zPbsXRLlwh12nHjitgV3jnfBIXQ==
X-Received: by 10.37.95.7 with SMTP id t7mr12888607ybb.82.1457521057766; Wed, 09 Mar 2016 02:57:37 -0800 (PST)
MIME-Version: 1.0
Received: by 10.37.201.132 with HTTP; Wed, 9 Mar 2016 02:57:18 -0800 (PST)
In-Reply-To: <7594FB04B1934943A5C02806D1A2204B37E9FDAB@ESESSMB209.ericsson.se>
References: <CALiegfm7Rb4e5DFGycr=EsdigE1XFCUiqNL6+GpRSyrGe=_RWg@mail.gmail.com> <56DED735.1000101@ericsson.com> <CALiegf=G77JOcoR6DORnPsMx4OCgy=_dYQ_r8KfjMy_33vn89A@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B37E9EA74@ESESSMB209.ericsson.se> <CALiegf=F4z9r+oCO1DMW_nXq7TBJjf-n3N1r6yr5tLoksXtUqg@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B37E9FDAB@ESESSMB209.ericsson.se>
From: Iñaki Baz Castillo <ibc@aliax.net>
Date: Wed, 09 Mar 2016 11:57:18 +0100
Message-ID: <CALiegf=kzThQ3n+Z-=E8G=ivyL1W=Q4gUcQenihAJ3pmv8udKQ@mail.gmail.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Archived-At: <http://mailarchive.ietf.org/arch/msg/mmusic/P1ir9VSXmW_mSbHTsxksEvzCEC0>
Cc: Magnus Westerlund <magnus.westerlund@ericsson.com>, "mmusic@ietf.org" <mmusic@ietf.org>
Subject: Re: [MMUSIC] BUNDLE: no reason por payload type to be unique within bundled m= lines
X-BeenThere: mmusic@ietf.org
X-Mailman-Version: 2.1.17
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: Wed, 09 Mar 2016 10:57:40 -0000

2016-03-09 8:01 GMT+01:00 Christer Holmberg <christer.holmberg@ericsson.com>:
> Section 5.1 of RFC 3264 says:
>
>    "For sendonly RTP streams, the payload type numbers indicate the value of the payload type field in RTP packets
>    the offerer is planning to send for that codec."
>
> ...followed by:
>
>    "However, for sendonly and sendrecv streams, the answer might indicate
>    different payload type numbers for the same codecs, in which case,
>    the offerer MUST send with the payload type numbers from the answer."
>
> So, for sendonly, the offerer can indicate the values it is "planning" to use, but the answerer will have the final say.

OK. But what would happen when such a a=sendrecv becomes a=sendonly
and later a=recvonly (due "hold" feature for example)? Also note that,
depending who sends the re-offer, payload types may have to change
within the same RTP "session".




-- 
Iñaki Baz Castillo
<ibc@aliax.net>

v2.23.0 | Report a Bug | By Email