Re: [MMUSIC] BUNDLE DECISSION: SDP Answer Restrictions

Kevin Dempsey <kevindempsey70@gmail.com> Fri, 24 May 2013 14:39 UTC

Return-Path: <kevindempsey70@gmail.com>
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 647F021F8624 for <mmusic@ietfa.amsl.com>; Fri, 24 May 2013 07:39:57 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.599
X-Spam-Level:
X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[BAYES_00=-2.599, HTML_MESSAGE=0.001, NO_RELAYS=-0.001]
Received: from mail.ietf.org ([12.22.58.30]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fNiFACIepkUt for <mmusic@ietfa.amsl.com>; Fri, 24 May 2013 07:39:56 -0700 (PDT)
Received: from mail-la0-x22e.google.com (mail-la0-x22e.google.com [IPv6:2a00:1450:4010:c03::22e]) by ietfa.amsl.com (Postfix) with ESMTP id AAFF121F8616 for <mmusic@ietf.org>; Fri, 24 May 2013 07:39:55 -0700 (PDT)
Received: by mail-la0-f46.google.com with SMTP id er20so4468039lab.5 for <mmusic@ietf.org>; Fri, 24 May 2013 07:39:54 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=6faadDVIycTCQp1ocLs0V525J+RtUts0TTMKFtFfgw8=; b=Jpcp3G/Iz7If0kUWzVznraD+lKZreV5zqATEYn6XkBsmuws7531skRaUFO0/R58yCR AKAA95TkS4rlrlKsiRpkQjtgvNYNI79MNZAnQhUsKo8Ie3vYUdEw85Mdxo2YfHj1rL61 cKTkBcK89P0R3R2Wbs3pf8uLQ+HPi7dlairgZvZss2BAZqbn06malI6jwgMjsc8wzegU NvJppHSQaanRfbsKG5o65HJbRFNaUaCWKuzC3KIR+POa1OBQ+uPPNSpsuljKg41zzApH s8+zv1BH0o/RyYzHr08b0gd4CwmDWAX0oHOzfxSFLxYdygv9x7fSd4BwzdTYIw5gvdd3 wvkQ==
MIME-Version: 1.0
X-Received: by 10.152.26.41 with SMTP id i9mr9009936lag.12.1369406394251; Fri, 24 May 2013 07:39:54 -0700 (PDT)
Received: by 10.114.0.139 with HTTP; Fri, 24 May 2013 07:39:54 -0700 (PDT)
In-Reply-To: <7594FB04B1934943A5C02806D1A2204B1C377967@ESESSMB209.ericsson.se>
References: <7594FB04B1934943A5C02806D1A2204B1C377967@ESESSMB209.ericsson.se>
Date: Fri, 24 May 2013 15:39:54 +0100
Message-ID: <CAMvTgcd1z2U1RmSQYPCrwvmk9Ka5EtXvYxKEJeGSoi5gRQM5qg@mail.gmail.com>
From: Kevin Dempsey <kevindempsey70@gmail.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
Content-Type: multipart/alternative; boundary=089e0158bde8aec0ca04dd77c543
Cc: "mmusic@ietf.org" <mmusic@ietf.org>
Subject: Re: [MMUSIC] BUNDLE DECISSION: SDP Answer Restrictions
X-BeenThere: mmusic@ietf.org
X-Mailman-Version: 2.1.12
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: <http://www.ietf.org/mail-archive/web/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: Fri, 24 May 2013 14:39:57 -0000

Can someone please explain why a m-line can be rejected when the port
numbers are different, but not if all the port numbers are the same?


On 24 May 2013 13:32, Christer Holmberg <christer.holmberg@ericsson.com>wrote;wrote:

>  Hi,****
>
> ** **
>
> At the interim meeting yesterday, we agreed on some restrictions regarding
> creating SDP answers containing bundle group(s).****
>
> ** **
>
> Note that the restrictions 1-3 are simply alignments with RFC 5888, and
> are listed simply for clarification purpose. Restrictions 4 is BUNDLE
> specific. Restriction 5 is also alignment with RFC 5888, as m- lines with
> port zero are not allowed within groups, but we will need some
> clarification text saying that a new offer will have to be sent in order to
> remove a stream (either from a bundle group, or completely from the
> session).****
>
> ** **
>
> (Note that the text below is not necessarily the wording that will go into
> the draft)****
>
> ** **
>
> In an SDP answer:****
>
> **1)      **a BUNDLE group MUST NOT be created, unless it was included in
> the associated offer****
>
> **2)      **an m- line MUST NOT be added to a BUNDLE group, unless it was
> included in a BUNDLE group in the associated offer****
>
> **3)      **an m- line MUST NOT be added to another BUNDLE group than the
> group in which was included in the associated offer****
>
> **4)      **an m- line MUST NOT be removed from a BUNDLE group if, in the
> associated offer, an identical port number was indicated for all m- lines
> in a BUNDLE group****
>
> **5)      **an m- line MUST NOT be rejected if, in the associated offer,
> an identical port number was indicated for all m- lines in a BUNDLE group*
> ***
>
> ** **
>
> ** **
>
> Note that there is also a discussion regarding bundle offers, e.g. when
> restrictions when adding new m- lines to a bundle. Based on the outcome of
> that, there may be some additional answer restrictions, e.g. regarding the
> change of bundle transport parameters. But, let’s deal with that in the
> offer thread.****
>
> ** **
>
> So, if anyone OBJECTS to the restrictions above, please indicate so.****
>
> ** **
>
> Regards,****
>
> ** **
>
> Christer****
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> _______________________________________________
> mmusic mailing list
> mmusic@ietf.org
> https://www.ietf.org/mailman/listinfo/mmusic
>
>