Re: [MMUSIC] DTLS-SDP: connection, dtls_connection, or dtls_ufrag?

Paul Kyzivat <pkyzivat@alum.mit.edu> Fri, 02 October 2015 14:56 UTC

Return-Path: <pkyzivat@alum.mit.edu>
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 DFBDF1B2BF6 for <mmusic@ietfa.amsl.com>; Fri, 2 Oct 2015 07:56:06 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.235
X-Spam-Level:
X-Spam-Status: No, score=-1.235 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, SPF_SOFTFAIL=0.665] autolearn=no
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 grQ3DOppUvxS for <mmusic@ietfa.amsl.com>; Fri, 2 Oct 2015 07:56:05 -0700 (PDT)
Received: from resqmta-ch2-10v.sys.comcast.net (resqmta-ch2-10v.sys.comcast.net [IPv6:2001:558:fe21:29:69:252:207:42]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 776CA1B2BD5 for <mmusic@ietf.org>; Fri, 2 Oct 2015 07:56:04 -0700 (PDT)
Received: from resomta-ch2-12v.sys.comcast.net ([69.252.207.108]) by resqmta-ch2-10v.sys.comcast.net with comcast id QEuQ1r0062LrikM01Ew3k3; Fri, 02 Oct 2015 14:56:03 +0000
Received: from Paul-Kyzivats-MacBook-Pro.local ([50.138.229.151]) by resomta-ch2-12v.sys.comcast.net with comcast id QEw31r00H3Ge9ey01Ew3Pl; Fri, 02 Oct 2015 14:56:03 +0000
To: mmusic@ietf.org
References: <7594FB04B1934943A5C02806D1A2204B37A85E29@ESESSMB209.ericsson.se> <560A2FC9.5030809@nteczone.com> <786615F3A85DF44AA2A76164A71FE1ACDF7907B1@FR711WXCHMBA01.zeu.alcatel-lucent.com> <CAD5OKxvzw7P2x6D91mrGfkDcdvMAX+nawdJFUzU+K4k3JmysrA@mail.gmail.com> <560B01FB.2090809@alum.mit.edu> <CAD5OKxvt1bM1d-PpcE=MjQs=ABSpA4QaQYj4dcA_kQRRyH9L+g@mail.gmail.com> <560D5D4E.4070203@alum.mit.edu> <CAD5OKxtguZs-w78xm=vdwDp9+W+6QhGLeTpL53XCEbK4BGfAqg@mail.gmail.com> <7594FB04B1934943A5C02806D1A2204B37AE8FD9@ESESSMB209.ericsson.se>
From: Paul Kyzivat <pkyzivat@alum.mit.edu>
Message-ID: <560E9B03.8030606@alum.mit.edu>
Date: Fri, 2 Oct 2015 10:56:03 -0400
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:38.0) Gecko/20100101 Thunderbird/38.3.0
MIME-Version: 1.0
In-Reply-To: <7594FB04B1934943A5C02806D1A2204B37AE8FD9@ESESSMB209.ericsson.se>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=comcast.net; s=q20140121; t=1443797763; bh=FYELklQnXY8SWCwvLlocEZQw/M+zXFPQi7NXekKI1Bo=; h=Received:Received:Subject:To:From:Message-ID:Date:MIME-Version: Content-Type; b=O4RjMRYG/wdFvLyxRx8KpMjQMXsnwEmjWEqJtv4+4ZUjLiI79/9d/kl7y2U5uA3ye /mPCgYd9Y5oC4KqAz2klUDzmr1d5bofMX8xXSRcx1uKY3LblXJ2fWPoB63ytLuTQIa 8Yz/jk5ZXKL4bbropf+VSkKgrFvAsms+pRgBiLNG8phEUrPPsyUZhO80zpj3eid1RF tZ57xT1BjdcuZ7O6wh/VABmFHdoh4xrubMpA8J901/EWi4Sf65u3anBf4EvKJQ7ODX faPYQsqjG5VUIf5tVy1TLpudG3d9VfbwqOIFqokMjBorMnNmHdbK0rTCShk2RkB7hF AV7vk4BX4GfvA==
Archived-At: <http://mailarchive.ietf.org/arch/msg/mmusic/hDIxZDWDaKXynuIueOhmkc3ukwo>
Subject: Re: [MMUSIC] DTLS-SDP: connection, dtls_connection, or dtls_ufrag?
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: Fri, 02 Oct 2015 14:56:07 -0000

I think there has been a screw up, in that the IANA SDP attributes 
registry has not been updated to reference these as uses of the attribute.

	Thanks,
	Paul

On 10/2/15 2:20 AM, Christer Holmberg wrote:
> Hi,
>
>>>> If setup attribute is used with protocol prefix, it is unclear if it will
>>>> be correctly recognized by the remote party.
>>>
>>> Am I right that there is no rfc specifying use of the setup attribute with dtls? (The IANA registry only has rfc4145 covering TCP.)
>>
>> RFC 5763 seciont 5 (https://tools.ietf.org/html/rfc5763#section-5) specifies how SDP setup attribute is used when DTLS association
>> is established. So, we are dealing with existing, standard compliant implementations.
>
> RFC 7345 (UDPTL-DTLS) also uses the same procedures, as does BFCPbis AFAIR.
>
> Regards,
>
> Christer
> _______________________________________________
> mmusic mailing list
> mmusic@ietf.org
> https://www.ietf.org/mailman/listinfo/mmusic
>