Re: HTTP/2 GREASE, Results, and Implications

Stefan Eissing <stefan.eissing@greenbytes.de> Mon, 04 November 2019 08:59 UTC

Return-Path: <ietf-http-wg-request+bounce-httpbisa-archive-bis2juki=lists.ie@listhub.w3.org>
X-Original-To: ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com
Delivered-To: ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id CD297120D62 for <ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com>; Mon, 4 Nov 2019 00:59:26 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.65
X-Spam-Level:
X-Spam-Status: No, score=-2.65 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, MAILING_LIST_MULTI=-1, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
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 5R1Qms085ybZ for <ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com>; Mon, 4 Nov 2019 00:59:24 -0800 (PST)
Received: from frink.w3.org (frink.w3.org [IPv6:2603:400a:ffff:804:801e:34:0:38]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C9CD3120D55 for <httpbisa-archive-bis2Juki@lists.ietf.org>; Mon, 4 Nov 2019 00:59:24 -0800 (PST)
Received: from lists by frink.w3.org with local (Exim 4.89) (envelope-from <ietf-http-wg-request@listhub.w3.org>) id 1iRY9t-00028b-Bj for ietf-http-wg-dist@listhub.w3.org; Mon, 04 Nov 2019 08:56:21 +0000
Resent-Date: Mon, 04 Nov 2019 08:56:21 +0000
Resent-Message-Id: <E1iRY9t-00028b-Bj@frink.w3.org>
Received: from mimas.w3.org ([2603:400a:ffff:804:801e:34:0:4f]) by frink.w3.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from <stefan.eissing@greenbytes.de>) id 1iRY9q-00027g-Uk for ietf-http-wg@listhub.w3.org; Mon, 04 Nov 2019 08:56:18 +0000
Received: from mail.greenbytes.de ([217.91.35.233]) by mimas.w3.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from <stefan.eissing@greenbytes.de>) id 1iRY9p-00078Z-97 for ietf-http-wg@w3.org; Mon, 04 Nov 2019 08:56:18 +0000
Received: by mail.greenbytes.de (Postfix, from userid 119) id E2D67984946; Mon, 4 Nov 2019 09:56:14 +0100 (CET)
Received: from resistance.greenbytes.local (unknown [192.168.1.65]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mail.greenbytes.de (Postfix) with ESMTPSA id 4BA3A980653; Mon, 4 Nov 2019 09:56:13 +0100 (CET)
Content-Type: text/plain; charset=utf-8
Mime-Version: 1.0 (Mac OS X Mail 13.0 \(3594.4.19\))
From: Stefan Eissing <stefan.eissing@greenbytes.de>
In-Reply-To: <20191101131903.GA1988@1wt.eu>
Date: Mon, 4 Nov 2019 09:56:13 +0100
Cc: =?utf-8?Q?Bence_B=C3=A9ky?= <bnc@chromium.org>, Mike Bishop <mbishop@evequefou.be>, HTTP Working Group <ietf-http-wg@w3.org>
Content-Transfer-Encoding: quoted-printable
Message-Id: <6F4160E3-D460-4DD9-9931-348479F6437F@greenbytes.de>
References: <BN6PR2201MB1700D10A34C72213C78E09A6DA630@BN6PR2201MB1700.namprd22.prod.outlook.com> <20191031155259.GC30674@1wt.eu> <CACMu3trL5UMukoPd8Nr4W-bMsyH+WKUnwg16yxu3tN5D=uZt8w@mail.gmail.com> <20191031203458.GA31017@1wt.eu> <CACMu3toue60Y_6Qxpzsqw-fOByc3Qjv=AG8Ed_DGvkR1EYn+4w@mail.gmail.com> <20191101131903.GA1988@1wt.eu>
To: Willy Tarreau <w@1wt.eu>
X-Mailer: Apple Mail (2.3594.4.19)
Received-SPF: pass client-ip=217.91.35.233; envelope-from=stefan.eissing@greenbytes.de; helo=mail.greenbytes.de
X-W3C-Hub-Spam-Status: No, score=-3.9
X-W3C-Hub-Spam-Report: BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, W3C_AA=-1, W3C_WL=-1
X-W3C-Scan-Sig: mimas.w3.org 1iRY9p-00078Z-97 da0da07d88cce3c8f4d735c911a509ce
X-Original-To: ietf-http-wg@w3.org
Subject: Re: HTTP/2 GREASE, Results, and Implications
Archived-At: <https://www.w3.org/mid/6F4160E3-D460-4DD9-9931-348479F6437F@greenbytes.de>
Resent-From: ietf-http-wg@w3.org
X-Mailing-List: <ietf-http-wg@w3.org> archive/latest/37112
X-Loop: ietf-http-wg@w3.org
Resent-Sender: ietf-http-wg-request@w3.org
Precedence: list
List-Id: <ietf-http-wg.w3.org>
List-Help: <https://www.w3.org/Mail/>
List-Post: <mailto:ietf-http-wg@w3.org>
List-Unsubscribe: <mailto:ietf-http-wg-request@w3.org?subject=unsubscribe>

Thanks for mitigating this. 

> Am 01.11.2019 um 14:19 schrieb Willy Tarreau <w@1wt.eu>;:
> 
> On Fri, Nov 01, 2019 at 07:43:51AM -0400, Bence Béky wrote:
>> Hi Willy,
>> 
>> Yes, I agree with you.  My current plan is to make Chrome send a frame of
>> reserved type
>> * on stream 0, after the SETTINGS frame;
>> * on non-zero streams, after each HEADERS and DATA frame that does not have
>> the END_STREAM flag set;
>> * or alternatively, after each HEADERS and DATA frame, and if the stream
>> should be closed, then send an empty DATA frame with END_STREAM after the
>> reserved frame.
>> 
>> I think this conforms to the state transition requirements you summarized.
> 
> Yes that sounds good.
> 
>> Thank you for the guidance.  I'll keep the list posted.
> 
> Thanks!
> Willy
>