Re: 6.9.2 Initial Flow Control Window Size Example

Martin Thomson <martin.thomson@gmail.com> Tue, 23 July 2013 22:29 UTC

Return-Path: <ietf-http-wg-request@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 D018811E8123 for <ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com>; Tue, 23 Jul 2013 15:29:56 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -9.769
X-Spam-Level:
X-Spam-Status: No, score=-9.769 tagged_above=-999 required=5 tests=[AWL=0.830, BAYES_00=-2.599, RCVD_IN_DNSWL_HI=-8]
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 x0T1Ii-KYYU5 for <ietfarch-httpbisa-archive-bis2Juki@ietfa.amsl.com>; Tue, 23 Jul 2013 15:29:51 -0700 (PDT)
Received: from frink.w3.org (frink.w3.org [128.30.52.56]) by ietfa.amsl.com (Postfix) with ESMTP id 8909D21F90FB for <httpbisa-archive-bis2Juki@lists.ietf.org>; Tue, 23 Jul 2013 15:29:46 -0700 (PDT)
Received: from lists by frink.w3.org with local (Exim 4.72) (envelope-from <ietf-http-wg-request@listhub.w3.org>) id 1V1l55-0000uh-0i for ietf-http-wg-dist@listhub.w3.org; Tue, 23 Jul 2013 22:29:19 +0000
Resent-Date: Tue, 23 Jul 2013 22:29:19 +0000
Resent-Message-Id: <E1V1l55-0000uh-0i@frink.w3.org>
Received: from maggie.w3.org ([128.30.52.39]) by frink.w3.org with esmtp (Exim 4.72) (envelope-from <martin.thomson@gmail.com>) id 1V1l4w-0000ts-Fl for ietf-http-wg@listhub.w3.org; Tue, 23 Jul 2013 22:29:10 +0000
Received: from mail-we0-f177.google.com ([74.125.82.177]) by maggie.w3.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.72) (envelope-from <martin.thomson@gmail.com>) id 1V1l4v-0003P9-PK for ietf-http-wg@w3.org; Tue, 23 Jul 2013 22:29:10 +0000
Received: by mail-we0-f177.google.com with SMTP id m46so937915wev.36 for <ietf-http-wg@w3.org>; Tue, 23 Jul 2013 15:28:43 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=C0kky5Kl3Jjc3JaB37REUhmA0X6V/vYiatoOlYCmZfE=; b=Z4bVU1+RLJUFUz7dk9TYCeGlUC5vdm2nuPup5NUi3+Whpt58kSK+H02RiLY6ybnepC KGU6m+XECtXX9T+FGwkzYTkzOpqgxOWS04Z+n+ydpsiC1Aos9/L2YVHPgjkmHPkTYMg4 hR9nfPMGpOVVgDnbn756nwOCNaJ8j5GUcwzyyf3Om2h5h05CMuuJVmcYJAVG/1NAgf+X 8PuTnEvr+F4eW+03BChZGHVpoghxqqaGB4MQM45cpGWOIA2OJlcYRksCkAws33dIA+KE eYwv2xKvCqH5Tk7jd7z610FMWzVBXfNKwCX0NcdjPup1G+sX7X+Lh86zeWl1iR3sq7Ea WTAg==
MIME-Version: 1.0
X-Received: by 10.180.92.1 with SMTP id ci1mr577740wib.14.1374618523663; Tue, 23 Jul 2013 15:28:43 -0700 (PDT)
Received: by 10.194.60.46 with HTTP; Tue, 23 Jul 2013 15:28:43 -0700 (PDT)
In-Reply-To: <CAOdDvNptA+va785zGGXuPnjh0WfRLBazA1n_mUcvg2fwvHXtcA@mail.gmail.com>
References: <CAOdDvNptA+va785zGGXuPnjh0WfRLBazA1n_mUcvg2fwvHXtcA@mail.gmail.com>
Date: Tue, 23 Jul 2013 15:28:43 -0700
Message-ID: <CABkgnnWayWA_jdeGvo2-OGjGA7-k-vO03=iO=Gn4YYu=fh3UhQ@mail.gmail.com>
From: Martin Thomson <martin.thomson@gmail.com>
To: Patrick McManus <pmcmanus@mozilla.com>
Cc: HTTP Working Group <ietf-http-wg@w3.org>
Content-Type: text/plain; charset="UTF-8"
Received-SPF: pass client-ip=74.125.82.177; envelope-from=martin.thomson@gmail.com; helo=mail-we0-f177.google.com
X-W3C-Hub-Spam-Status: No, score=-3.5
X-W3C-Hub-Spam-Report: AWL=-2.660, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, SPF_PASS=-0.001
X-W3C-Scan-Sig: maggie.w3.org 1V1l4v-0003P9-PK b8ab82d09e61867de2d2100ea1c279a8
X-Original-To: ietf-http-wg@w3.org
Subject: Re: 6.9.2 Initial Flow Control Window Size Example
Archived-At: <http://www.w3.org/mid/CABkgnnWayWA_jdeGvo2-OGjGA7-k-vO03=iO=Gn4YYu=fh3UhQ@mail.gmail.com>
Resent-From: ietf-http-wg@w3.org
X-Mailing-List: <ietf-http-wg@w3.org> archive/latest/18894
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: <http://www.w3.org/Mail/>
List-Post: <mailto:ietf-http-wg@w3.org>
List-Unsubscribe: <mailto:ietf-http-wg-request@w3.org?subject=unsubscribe>

On 23 July 2013 14:03, Patrick McManus <pmcmanus@mozilla.com> wrote:
> For example, if the client sends 64KB immediately on connection
>    establishment,
>
>
> The example uses an invalid computation because the default window is "64KB
> - 1"

This is true if you assume that it wasn't just rounded up :)

https://github.com/http2/http2-spec/issues/182