[MMUSIC] UDPTL-DTLS: Open Issue regarding usage of the SDP connection attribute

Christer Holmberg <christer.holmberg@ericsson.com> Tue, 19 November 2013 10:40 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 2138B1ADBFF for <mmusic@ietfa.amsl.com>; Tue, 19 Nov 2013 02:40:44 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -3.85
X-Spam-Level:
X-Spam-Status: No, score=-3.85 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HELO_EQ_SE=0.35, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001] 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 ZoO2-OOBn1Ff for <mmusic@ietfa.amsl.com>; Tue, 19 Nov 2013 02:40:42 -0800 (PST)
Received: from mailgw1.ericsson.se (mailgw1.ericsson.se [193.180.251.45]) by ietfa.amsl.com (Postfix) with ESMTP id C3E041AD986 for <mmusic@ietf.org>; Tue, 19 Nov 2013 02:40:41 -0800 (PST)
X-AuditID: c1b4fb2d-b7f1c8e000005ceb-69-528b4023c5b6
Received: from ESESSHC008.ericsson.se (Unknown_Domain [153.88.253.125]) by mailgw1.ericsson.se (Symantec Mail Security) with SMTP id 73.26.23787.3204B825; Tue, 19 Nov 2013 11:40:35 +0100 (CET)
Received: from ESESSMB209.ericsson.se ([169.254.9.73]) by ESESSHC008.ericsson.se ([153.88.183.42]) with mapi id 14.02.0328.009; Tue, 19 Nov 2013 11:40:35 +0100
From: Christer Holmberg <christer.holmberg@ericsson.com>
To: "mmusic@ietf.org" <mmusic@ietf.org>
Thread-Topic: UDPTL-DTLS: Open Issue regarding usage of the SDP connection attribute
Thread-Index: Ac7lEyKJHfFouG6mT62OQuu1lxu/kQ==
Date: Tue, 19 Nov 2013 10:40:34 +0000
Message-ID: <7594FB04B1934943A5C02806D1A2204B1C541B0A@ESESSMB209.ericsson.se>
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: multipart/alternative; boundary="_000_7594FB04B1934943A5C02806D1A2204B1C541B0AESESSMB209erics_"
MIME-Version: 1.0
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrGLMWRmVeSWpSXmKPExsUyM+Jvra6yQ3eQwfPDwhZTlz9mcWD0WLLk J1MAYxSXTUpqTmZZapG+XQJXxsTmL2wFK+QrNh35zdTAuFO6i5GTQ0LARKJt7ScWCFtM4sK9 9WxdjFwcQgKHGCXmP77IDOEsZpTYtOA9YxcjBwebgIVE9z9tkAYRAXWJr3t7mEFsYYFAiVuN N5kh4mES9/5OYYGw9SQ2XrnACmKzCKhK3P3ewQhi8wr4Styeco4NxGYEWvz91BomEJtZQFzi 1pP5TBAHCUgs2XOeGcIWlXj5+B8rhK0o8fHVPkaI+nyJoy2LmSBmCkqcnPmEZQKj0Cwko2Yh KZuFpAwiriOxYPcnNghbW2LZwtfMMPaZA4+ZkMUXMLKvYmTPTczMSS833MQIDPuDW37r7mA8 dU7kEKM0B4uSOO+Ht85BQgLpiSWp2ampBalF8UWlOanFhxiZODilGhgbk64IJ/crpOxjmLrC 1Z/tiGKjmahY+f7922xPz2Cck9MdXZve8FDM99OblYfX6qg5xwvFFffeNZ9V9XxNOmvfqq8b dr6R+RW+60ZlkOGU29c+lIYwLTq12vOh25Zb+m3Rburav+x7F624fy2f+W1ebtJ7RoM7ch43 pH9tVmTVFCqQ9PpR56vEUpyRaKjFXFScCACV5pklSQIAAA==
Subject: [MMUSIC] UDPTL-DTLS: Open Issue regarding usage of the SDP connection attribute
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: <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: Tue, 19 Nov 2013 10:40:44 -0000

Hi,

One of the open issues (indicated in an Editor's Note) in the UDPTL-DTLS draft is regarding the usage of the SDP connection attribute:

"Editor's note: FFS if connection attribute defined in RFC 4145 is needed."

The SRTP-DTLS spec forbids the usage of the attribute:

"The endpoint MUST NOT use the connection attribute defined in [RFC4145]."

...and I can't think of a reason why we should deviate in the UDPTL-DTLS spec, so my suggestion would be to remove the Editor's Note, and explicitly indicate that the attribute must not be used (same as in RFC 5763).

Comments?

Regards,

Christer