Re: [MMUSIC] Mirja Kühlewind's Discuss on draft-ietf-mmusic-sctp-sdp-23: (with DISCUSS)

Eric Rescorla <ekr@rtfm.com> Thu, 16 February 2017 14:40 UTC

Return-Path: <ekr@rtfm.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 08C85129ACD for <mmusic@ietfa.amsl.com>; Thu, 16 Feb 2017 06:40:23 -0800 (PST)
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=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7] autolearn=unavailable autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=rtfm-com.20150623.gappssmtp.com
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 XYnVYXycPCFv for <mmusic@ietfa.amsl.com>; Thu, 16 Feb 2017 06:40:21 -0800 (PST)
Received: from mail-oi0-x236.google.com (mail-oi0-x236.google.com [IPv6:2607:f8b0:4003:c06::236]) (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 10E3F129CFB for <mmusic@ietf.org>; Thu, 16 Feb 2017 06:39:55 -0800 (PST)
Received: by mail-oi0-x236.google.com with SMTP id u143so9120523oif.3 for <mmusic@ietf.org>; Thu, 16 Feb 2017 06:39:55 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rtfm-com.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=KgaMbma91B4K1IZdPnkoGrnlbAzkKng2/58GNwS7aBo=; b=JPeM6bhHjT+WOPBVjtx4qoXxfjNva5avI3kL8ZL1cMU7abfsrG00EqWJQ2u+YpEfcp +BSJIjG2tWD0Glr0B8Sgnkhn0wRDxbszjwH5eTom09ebHGY9EipFzzmqdPP1jiPfbTBG zVq+DrqRLasbHQak3hadbxClLn/6UoxvNubtUACpYI/9fgS0uCVJ+8xIfCebnsnFsO/C ff7OS868+gCwTPWyeAzeibarhGHT0+yZnFwG8PMyyjNUYG+1mh83aUt48QWRCQvPKAea 33axLwlqbQfRiT4UDSvo6TT0UPWpak8rkpz2elnin9U3NX3IaICFC6OvrO/dScjnUK+s y+/w==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=KgaMbma91B4K1IZdPnkoGrnlbAzkKng2/58GNwS7aBo=; b=nHmXpNJyYpsyoflQ7zk6J+Y6MRexCan22unxci3MMQvh4pJ2qrdbEbY61A3H5C/aqh UxD/oVXDPrtqsrLp/b4mhcl09OPHgm+Q1PyGZJ7ehzZpR0ruopAFNRD1FwwTqRcLAUBQ s9MkrYcOMJvoTwqH4UUiXvSUYKoMrDgSU7qvHi6e/1m/AG1OeSoIHZxhI4QwWPCRkoRs K4Gj5R9oYLCAxdizRaRWUxF2EYIa46ec8aTFmDUd8Pfx0RDM+rHN0tPt1JZcx/HjIzjU xAEey+7f5J5clVjxptG6NWlZJIK96Wvaj+jPZAh18Wf3JgE7n4tDKw3ZxDEuN7UV/72l 8BBQ==
X-Gm-Message-State: AMke39lrISBXf7cymi4A9vj9PH8VPlJxOtJMVkR+mX+e/n3gtMGOMB6cHEhxxJ2ga5FhlVt9HpnnZesW0AgJTA==
X-Received: by 10.202.239.132 with SMTP id n126mr1203182oih.186.1487255994476; Thu, 16 Feb 2017 06:39:54 -0800 (PST)
MIME-Version: 1.0
Received: by 10.157.13.230 with HTTP; Thu, 16 Feb 2017 06:39:14 -0800 (PST)
In-Reply-To: <7594FB04B1934943A5C02806D1A2204B4C0040D6@ESESSMB209.ericsson.se>
References: <148724403323.15929.1432579178871938006.idtracker@ietfa.amsl.com> <7594FB04B1934943A5C02806D1A2204B4C0040D6@ESESSMB209.ericsson.se>
From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 16 Feb 2017 06:39:14 -0800
Message-ID: <CABcZeBMnefcEWsLPXRXUAyuX2H6ZYF42LzJbR_eS1ve25T0mYA@mail.gmail.com>
To: Christer Holmberg <christer.holmberg@ericsson.com>
Content-Type: multipart/alternative; boundary=94eb2c092f6c3dc6f60548a6c587
Archived-At: <https://mailarchive.ietf.org/arch/msg/mmusic/AhaeQMOPJ1aOcqu3055k6-ZQT44>
Cc: "mmusic-chairs@ietf.org" <mmusic-chairs@ietf.org>, "mmusic@ietf.org" <mmusic@ietf.org>, "fandreas@cisco.com" <fandreas@cisco.com>, Mirja Kuehlewind <ietf@kuehlewind.net>, The IESG <iesg@ietf.org>, "draft-ietf-mmusic-sctp-sdp@ietf.org" <draft-ietf-mmusic-sctp-sdp@ietf.org>
Subject: Re: [MMUSIC] =?utf-8?q?Mirja_K=C3=BChlewind=27s_Discuss_on_draft-ietf?= =?utf-8?q?-mmusic-sctp-sdp-23=3A_=28with_DISCUSS=29?=
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: Thu, 16 Feb 2017 14:40:23 -0000

With that said, why are we registering TCP/DTLS/TCP at all? Is anyone
really going to use this without ICE?

-Ekr


On Thu, Feb 16, 2017 at 6:37 AM, Christer Holmberg <
christer.holmberg@ericsson.com> wrote:

> Hi Mirja,
>
> ...
>
> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
>
> > Why is this using TCP/DTLS/SCTP instead of TCP/TLS/SCTP?
>
> Because the way it is realized is by transporting SCTP on top of DTLS (as
> defined in draft-ietf-tsvwg-sctp-dtls-encaps) and transporting DTLS on
> top of TCP (defined in RFC 4571).
>
> Regards.
>
> Christer
>
>
>
>
> _______________________________________________
> mmusic mailing list
> mmusic@ietf.org
> https://www.ietf.org/mailman/listinfo/mmusic
>