Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER scenario in JSEP

Harald Alvestrand <harald@alvestrand.no> Wed, 02 May 2012 16:38 UTC

Return-Path: <harald@alvestrand.no>
X-Original-To: rtcweb@ietfa.amsl.com
Delivered-To: rtcweb@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 55FC311E8086 for <rtcweb@ietfa.amsl.com>; Wed, 2 May 2012 09:38:41 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -110.52
X-Spam-Level:
X-Spam-Status: No, score=-110.52 tagged_above=-999 required=5 tests=[AWL=0.078, BAYES_00=-2.599, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_HI=-8, USER_IN_WHITELIST=-100]
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 kJUz6EhFj23I for <rtcweb@ietfa.amsl.com>; Wed, 2 May 2012 09:38:40 -0700 (PDT)
Received: from eikenes.alvestrand.no (eikenes.alvestrand.no [158.38.152.233]) by ietfa.amsl.com (Postfix) with ESMTP id 8394111E8081 for <rtcweb@ietf.org>; Wed, 2 May 2012 09:38:38 -0700 (PDT)
Received: from localhost (localhost [127.0.0.1]) by eikenes.alvestrand.no (Postfix) with ESMTP id 9834439E112; Wed, 2 May 2012 18:38:37 +0200 (CEST)
X-Virus-Scanned: Debian amavisd-new at eikenes.alvestrand.no
Received: from eikenes.alvestrand.no ([127.0.0.1]) by localhost (eikenes.alvestrand.no [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id CPUXBUXsp46I; Wed, 2 May 2012 18:38:36 +0200 (CEST)
Received: from hta-dell.lul.corp.google.com (62-20-124-50.customer.telia.com [62.20.124.50]) by eikenes.alvestrand.no (Postfix) with ESMTPSA id CB0BD39E089; Wed, 2 May 2012 18:38:36 +0200 (CEST)
Message-ID: <4FA1630C.7060902@alvestrand.no>
Date: Wed, 02 May 2012 18:38:36 +0200
From: Harald Alvestrand <harald@alvestrand.no>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120412 Thunderbird/11.0.1
MIME-Version: 1.0
To: Roman Shpount <roman@telurix.com>
References: <387F9047F55E8C42850AD6B3A7A03C6C0E23B102@inba-mail01.sonusnet.com> <CA+rAfUMfZBHxAjR0zmwhSxftQbPK0X3sNuxu4UV6bnMvnJ_9xA@mail.gmail.com> <CAOJ7v-3K=NK6zCLr-E-aSHDKVv2hMqnUhZKroX0YoBTo6-nQ+Q@mail.gmail.com> <6F428EFD2B8C2F49A2FB1317291A76C1136029362A@USNAVSXCHMBSA1.ndc.alcatel-lucent.com> <4FA13816.6050003@alvestrand.no> <CAD5OKxsOAeTRdCgj2g4BY8maeG1n9nzCv29g8kaFPVZ4tf8C5w@mail.gmail.com> <4FA15898.1040204@alvestrand.no> <7F2072F1E0DE894DA4B517B93C6A05852C44001329@ESESSCMS0356.eemea.ericsson.se> <CAD5OKxsbTSpMPg30P4DSN6UasCx6na43tpZ5yT2ct6SLMpd9xQ@mail.gmail.com>
In-Reply-To: <CAD5OKxsbTSpMPg30P4DSN6UasCx6na43tpZ5yT2ct6SLMpd9xQ@mail.gmail.com>
Content-Type: multipart/alternative; boundary="------------090903080506070707010605"
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] SDP_PRANSWER followed by SDP_OFFER scenario in JSEP
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: Real-Time Communication in WEB-browsers working group list <rtcweb.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=unsubscribe>
List-Archive: <http://www.ietf.org/mail-archive/web/rtcweb>
List-Post: <mailto:rtcweb@ietf.org>
List-Help: <mailto:rtcweb-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/rtcweb>, <mailto:rtcweb-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 02 May 2012 16:38:42 -0000

On 05/02/2012 06:27 PM, Roman Shpount wrote:
>
> On Wed, May 2, 2012 at 12:13 PM, Christer Holmberg 
> <christer.holmberg@ericsson.com 
> <mailto:christer.holmberg@ericsson.com>> wrote:
>
>     Do people think that is not enough, and that we would need to
>     support multiple remote locations simultanously (no matter whether
>     it's implemented using cloning or something else)?
>
>
> I never thought that was enough if we are to interop with anything 
> that support forking. Latest example from Partha shows that this is 
> indeed the case.
>
> I actually think that adding support for forking is trivial (order of 
> magnitude less complcated then DTLS-SRTP or identity) and would 
> simplify interop as well as enable numerous additional calling scenarios.

I'm looking forward to reviewing your detailed proposal and your 
implementation.