IETF Logo Mail Archive

Re: [MMUSIC] connection:new with DTLS

Bernard Aboba <bernard_aboba@hotmail.com> Sun, 29 March 2015 21:55 UTC

Return-Path: <bernard_aboba@hotmail.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 938F71A6EFC for <mmusic@ietfa.amsl.com>; Sun, 29 Mar 2015 14:55:53 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: 0.791
X-Spam-Level:
X-Spam-Status: No, score=0.791 tagged_above=-999 required=5 tests=[BAYES_50=0.8, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01] 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 xCRNkXeaFaUj for <mmusic@ietfa.amsl.com>; Sun, 29 Mar 2015 14:55:51 -0700 (PDT)
Received: from BLU004-OMC3S31.hotmail.com (blu004-omc3s31.hotmail.com [65.55.116.106]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 9F4D31A6EE9 for <mmusic@ietf.org>; Sun, 29 Mar 2015 14:55:51 -0700 (PDT)
Received: from BLU181-W28 ([65.55.116.74]) by BLU004-OMC3S31.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.22751); Sun, 29 Mar 2015 14:55:50 -0700
X-TMN: [roZCY/mafWbcWy8Y2hB++enjsCFyn9FYIckZ99bRXCA=]
X-Originating-Email: [bernard_aboba@hotmail.com]
Message-ID: <BLU181-W28DA6FA11348B97988517993F60@phx.gbl>
Content-Type: multipart/alternative; boundary="_57151775-81cc-421b-adb2-22ef5d11b792_"
From: Bernard Aboba <bernard_aboba@hotmail.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>, Martin Thomson <martin.thomson@gmail.com>
Date: Sun, 29 Mar 2015 14:55:50 -0700
Importance: Normal
In-Reply-To: <7594FB04B1934943A5C02806D1A2204B1D782EB8@ESESSMB209.ericsson.se>
References: <7594FB04B1934943A5C02806D1A2204B1D781C55@ESESSMB209.ericsson.se>, , <CABkgnnXS0JHgxpkdHaQLfy7RtP_MrpeOJQZw=XWZGceu+BktRg@mail.gmail.com>, <7594FB04B1934943A5C02806D1A2204B1D782EB8@ESESSMB209.ericsson.se>
MIME-Version: 1.0
X-OriginalArrivalTime: 29 Mar 2015 21:55:50.0761 (UTC) FILETIME=[1EFBD590:01D06A6B]
Archived-At: <http://mailarchive.ietf.org/arch/msg/mmusic/EDz6wtZ0a8bGPnvfQBoLVkcaPoY>
Cc: mmusic E-mail <mmusic@ietf.org>
Subject: Re: [MMUSIC] connection:new with DTLS
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: Sun, 29 Mar 2015 21:55:53 -0000

Christer said: 


 
-          In case of SCTP/DTLS, I guess re-establishment of the SCTP association would also impact the overlying DTLS association. But, again, there are no ICE procedures for SCTP
 transport, so that should be fine.


[BA]  If we are talking about DTLS *over* SCTP,  I don't see why re-establishment of the SCTP association should necessarily require a new DTLS association.  Why can't DTLS utilize SCTP as a "virtual connection" as it does ICE?  



-          In case of UDP/DTLS/SCTP I guess one can re-establish the SCTP association without impacting the underlying DTLS connection, so that should be fine too.


[BA]  In general, transport layers are built to run over a variety of lower layers, and be tolerant of their (differing) characteristics.  So re-establishing the SCTP association does not impact an underlying DTLS association. 

 
-          However, in case of TCP/DTLS/SCTP, the draft says that connection:new re-establishes both the TCP connection and the SCTP association, so I guess that would impact the
 DTLS connection.

 
[BA]  Don't believe everything you read on the InterWebs, even if it is on the IETF website :)

v2.23.0 | Report a Bug | By Email