Re: [rtcweb] Working Group Last Call: JSEP

Bernard Aboba <bernard.aboba@gmail.com> Thu, 10 November 2016 01:36 UTC

Return-Path: <bernard.aboba@gmail.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 2DF4712959B for <rtcweb@ietfa.amsl.com>; Wed, 9 Nov 2016 17:36:54 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.999
X-Spam-Level:
X-Spam-Status: No, score=-1.999 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=gmail.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 kdy8bVF_7TCU for <rtcweb@ietfa.amsl.com>; Wed, 9 Nov 2016 17:36:52 -0800 (PST)
Received: from mail-ua0-x236.google.com (mail-ua0-x236.google.com [IPv6:2607:f8b0:400c:c08::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 4E45A1294AC for <rtcweb@ietf.org>; Wed, 9 Nov 2016 17:36:52 -0800 (PST)
Received: by mail-ua0-x236.google.com with SMTP id b35so189159511uaa.3 for <rtcweb@ietf.org>; Wed, 09 Nov 2016 17:36:52 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=PrwNP4nfy0PuV3auAzGILmz1DU/xaTka6fiVYdpwjfU=; b=CPxRkvLycjfdoCaT6dYBqgaHMl7Yom6lfEXumv0wSuMRvi1buOEMj3wI0e3eTo6UHk arjwl1k1WfW+wPo9mvfvvJVHD3a5VqqLXDn1xfJkEOHSzWQpNm0aGF527I8RqT0SPV7/ 4e22ZapmZp9QWEGNi9vI6IKeiZ6RROhKIwB77DdzU9dzX/Yo6WorAPKirtNnA9GPX2Kx +F+6PWYX9j5+8uxj+SIqvVN122Lurb5gF3QI8P9vfMP/1IQ4TNa2qLvMiRX7pDqqQc5Y jWCT9HeZIINej6rwqsH0S68hJK2ZJKXyjSmnD+qzA8LAhpEKojN0Bi8RnEwVkL5dxySU JyCA==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=PrwNP4nfy0PuV3auAzGILmz1DU/xaTka6fiVYdpwjfU=; b=l2HaZHaUTsq/1NMgeD5TxAj9yhiQyyfO8ABR9o3IZfgJGctNA6Vqokdg+0e/4EhnM1 HjflKe3r2dJxJjiZD3S+MFLXTZOC3Qb7REP2fBcqWHX7DxrCfb1nz9hepW/kFU9FcnrT G24FG0JiDROaxGCdvVgjO3yX7BlGKBBRRF53fR8Ix/T5nF3Y2s75xPOebmwF1vArqw7L Xl4AZssZExqhElonVwx89S6uPlYVCsb8FMv01hbcfizMX5DSo4KM4w3gcoPX+oJERBid BUYE99VNB2BY3gs2HvymAVDAvYlSIqnzzfjfhJFHQ9SI+6aqKQ1MNqc5E/Y3xlu84vs+ JAHA==
X-Gm-Message-State: ABUngvdJVIUW+gS9FcgVS7DM4CSubkY13EUXZVCify9xJoULF7AYfU1ABEBhnPLYMC1cslPYsPn0CwugR2JuQQ==
X-Received: by 10.159.34.41 with SMTP id 38mr1881935uad.160.1478741811357; Wed, 09 Nov 2016 17:36:51 -0800 (PST)
MIME-Version: 1.0
Received: by 10.176.16.10 with HTTP; Wed, 9 Nov 2016 17:36:31 -0800 (PST)
In-Reply-To: <c4c9d8ff-389a-6eae-0938-ba99b151b9f9@goodadvice.pages.de>
References: <CA+9kkMBLcUFs-sdpSnTEHfGVwwG1iDsWpsk1ONHrq2M7LV4g3w@mail.gmail.com> <c4c9d8ff-389a-6eae-0938-ba99b151b9f9@goodadvice.pages.de>
From: Bernard Aboba <bernard.aboba@gmail.com>
Date: Wed, 09 Nov 2016 17:36:31 -0800
Message-ID: <CAOW+2dux2xg6vD0j0ewPKy5dBBR8C=8+7NqfFxqnaF1T6xuJ5Q@mail.gmail.com>
To: Philipp Hancke <fippo@goodadvice.pages.de>
Content-Type: multipart/alternative; boundary="001a1135df646170680540e86842"
Archived-At: <https://mailarchive.ietf.org/arch/msg/rtcweb/acNvLcBMvNpGp_k4CgQityEXDII>
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>, Shijun Sun <sunsj007@gmail.com>
Subject: Re: [rtcweb] Working Group Last Call: JSEP
X-BeenThere: rtcweb@ietf.org
X-Mailman-Version: 2.1.17
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: <https://mailarchive.ietf.org/arch/browse/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: Thu, 10 Nov 2016 01:36:54 -0000

+1.

One of the reasons we added setDirection() was to be able to handle the
"warm up" case with no recourse to pranswer (as demonstrated in Example 12
in Section 11.2 as you cite).

Given that, it is hard to motivate an implementation to support pranswer
(e.g. in the Edge WebRTC 1.0 feature now in Windows Insider Preview, we
left out support for pranswer).



On Tue, Nov 8, 2016 at 10:43 AM, Philipp Hancke <fippo@goodadvice.pages.de>
wrote:

> Am 21.10.2016 um 21:25 schrieb Ted Hardie:
>
>> The chairs would like to start a working group last call on
>> draft-ietf-rtcweb-jset-17 to end on November 9th, 2016, 17:00 KST.
>>
>> Please review thoroughly, as working through the last comments will be the
>> major effort of our working group meeting in Seoul.
>>
>
> One question: why is pranswer still in there? The major use-case for this
> seems to be transport warm-up (4.1.7.1) for which I think transceivers are
> the new way as shown in http://w3c.github.io/webrtc-pc
> /#simple-peer-to-peer-example-with-warm-up
>
> pranswer has not seen much traffic on this list. Together with BUNDLE it
> seems to have been broken in Chrome since 2014 if I understand
> https://bugs.chromium.org/p/webrtc/issues/detail?id=3349 correctly. And I
> recall it being broken in 2013 when using DTLS.
>
>
> _______________________________________________
> rtcweb mailing list
> rtcweb@ietf.org
> https://www.ietf.org/mailman/listinfo/rtcweb
>