Re: [rtcweb] I-D Action: draft-ietf-rtcweb-data-channel-04.txt

Salvatore Loreto <salvatore.loreto@ericsson.com> Wed, 06 March 2013 10:45 UTC

Return-Path: <salvatore.loreto@ericsson.com>
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 4EA7C21F8611 for <rtcweb@ietfa.amsl.com>; Wed, 6 Mar 2013 02:45:34 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -106.249
X-Spam-Level:
X-Spam-Status: No, score=-106.249 tagged_above=-999 required=5 tests=[AWL=0.000, BAYES_00=-2.599, HELO_EQ_SE=0.35, RCVD_IN_DNSWL_MED=-4, 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 9TLeVmfIzQsT for <rtcweb@ietfa.amsl.com>; Wed, 6 Mar 2013 02:45:33 -0800 (PST)
Received: from mailgw1.ericsson.se (mailgw1.ericsson.se [193.180.251.45]) by ietfa.amsl.com (Postfix) with ESMTP id 5F23321F85D6 for <rtcweb@ietf.org>; Wed, 6 Mar 2013 02:45:33 -0800 (PST)
X-AuditID: c1b4fb2d-b7f316d0000028db-25-51371e4cebbd
Received: from esessmw0197.eemea.ericsson.se (Unknown_Domain [153.88.253.124]) by mailgw1.ericsson.se (Symantec Mail Security) with SMTP id 0F.1C.10459.C4E17315; Wed, 6 Mar 2013 11:45:32 +0100 (CET)
Received: from mail.lmf.ericsson.se (153.88.115.8) by esessmw0197.eemea.ericsson.se (153.88.115.88) with Microsoft SMTP Server id 8.3.279.1; Wed, 6 Mar 2013 11:45:32 +0100
Received: from nomadiclab.lmf.ericsson.se (nomadiclab.lmf.ericsson.se [131.160.33.3]) by mail.lmf.ericsson.se (Postfix) with ESMTP id A95542AF0 for <rtcweb@ietf.org>; Wed, 6 Mar 2013 12:45:31 +0200 (EET)
Received: from nomadiclab.lmf.ericsson.se (localhost [127.0.0.1]) by nomadiclab.lmf.ericsson.se (Postfix) with ESMTP id 4BC6154659 for <rtcweb@ietf.org>; Wed, 6 Mar 2013 12:45:29 +0200 (EET)
Received: from Salvatore-Loretos-MacBook-Pro.local (localhost [127.0.0.1]) by nomadiclab.lmf.ericsson.se (Postfix) with ESMTP id D3A935463D for <rtcweb@ietf.org>; Wed, 6 Mar 2013 12:45:28 +0200 (EET)
Message-ID: <51371E4A.4040602@ericsson.com>
Date: Wed, 06 Mar 2013 11:45:30 +0100
From: Salvatore Loreto <salvatore.loreto@ericsson.com>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:17.0) Gecko/20130216 Thunderbird/17.0.3
MIME-Version: 1.0
To: rtcweb@ietf.org
References: <20130225224014.18570.20111.idtracker@ietfa.amsl.com> <39821B4C400EC14DAD4DB25330A9271A0191D3@FR711WXCHMBA03.zeu.alcatel-lucent.com> <5135C64A.50302@jesup.org> <39821B4C400EC14DAD4DB25330A9271A02108E@FR711WXCHMBA02.zeu.alcatel-lucent.com>
In-Reply-To: <39821B4C400EC14DAD4DB25330A9271A02108E@FR711WXCHMBA02.zeu.alcatel-lucent.com>
Content-Type: text/plain; charset="ISO-8859-1"; format="flowed"
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: ClamAV using ClamSMTP
X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrILMWRmVeSWpSXmKPExsUyM+Jvja6PnHmgwc+TihZr/7WzOzB6LFny kymAMYrLJiU1J7MstUjfLoEr48vkj8wFXWwVG5evYG1gfMfSxcjJISFgIvFo7gk2CFtM4sK9 9WC2kMBJRomGjTkQ9npGiaYvwV2MXED2BUaJA4s+s0A4hxklHq+bwwrhnGGUuHB9F1g7r4C2 xKyrV5lBbBYBFYlbX5eCxdkEzCSeP9wCFhcVSJb49+gII0S9oMTJmU/AThIREJbY+qqXCcQW FnCX+Pijkx1iwS9GibNXjoAN4hSIlviy7AcriM0sYCtxYc51FghbXmL72znMEP+oSVw9t4kZ 4gctid6znUwTGEVmIdk3C0n7LCTtCxiZVzGy5yZm5qSXG25iBAbzwS2/dXcwnjoncohRmoNF SZw3zPVCgJBAemJJanZqakFqUXxRaU5q8SFGJg5OqQZGnlPLl7S8zNx2PlXXgllsj+WBO7YO r4w1EzbEz411z1H5wx2Ydk9B7MzMjU+OeE3lk9y+U3/K0TWX94bcvedQnnBYrWAz14QZgcdm Xfj3afrSaMZk4xuzPmzZedXi435DL+4/79RLsuuOLbCe8UvDq/K5c8ayD2rqpo17T7EyZiso GM5X11r3WYmlOCPRUIu5qDgRAL8RchA0AgAA
Subject: Re: [rtcweb] I-D Action: draft-ietf-rtcweb-data-channel-04.txt
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, 06 Mar 2013 10:45:34 -0000

On 3/6/13 11:40 AM, MARCON, JEROME (JEROME) wrote:
>>> > >4. What happens if the SDP Opening Handshake agreed on some
>> >data channels using the 'chat' subprotocol, and later on an
>> >endpoint creates in-band a new channel with 'file transfer'
>> >subprotocol ?
>> >
>> >When you create a channel, it sends Open on an unused Stream.
>> >
>> >
> That does not answer to my question, so I reformulate: some time after the initial SDP Opening Handshake, can the DATA_CHANNEL_OPEN message create in-band a data channel with a 'subprotocol' not negotiated by the initial SDP Opening Handshake ?
>
I do think it should be possible to do it in-band

However I agree with you that an important side question is if/when that 
will be also signaled via SDP

/Salvatore