IETF Logo Mail Archive

Re: [quicwg/base-drafts] MUST ACK each ack-eliciting packet once (#3092)

Martin Thomson <notifications@github.com> Tue, 22 October 2019 08:30 UTC

Return-Path: <noreply@github.com>
X-Original-To: quic-issues@ietfa.amsl.com
Delivered-To: quic-issues@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 92B551200C7 for <quic-issues@ietfa.amsl.com>; Tue, 22 Oct 2019 01:30:20 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -6.382
X-Spam-Level:
X-Spam-Status: No, score=-6.382 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_IMAGE_ONLY_24=1.618, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=github.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 CmNpGzOZHiBK for <quic-issues@ietfa.amsl.com>; Tue, 22 Oct 2019 01:30:19 -0700 (PDT)
Received: from out-24.smtp.github.com (out-24.smtp.github.com [192.30.252.207]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2F8AD120047 for <quic-issues@ietf.org>; Tue, 22 Oct 2019 01:30:19 -0700 (PDT)
Date: Tue, 22 Oct 2019 01:30:18 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1571733018; bh=CwRe2qycSgHk4Yqb715kBCJeVyzIh35Hhi9YLvDnxak=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=opNW/0bVP9UILlj6zIAhLf1NQlroc7HievhqywVFJR7OZkSfAFi3yNEc7aIjRKBUE Lba1P8fJURSXA5Xw0OzysYsTcLBwoj8eLROvU2Z5NzvvTnn81B4wwhizCLwdxR2ake UFlyn/MRqELABE9DA5WeiV9E1ycQrbhaD8gy09LI=
From: Martin Thomson <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJK2B5A44P3V5YE2UJD53XP7KVEVBNHHB4ODZTE@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/3092/review/305034767@github.com>
In-Reply-To: <quicwg/base-drafts/pull/3092@github.com>
References: <quicwg/base-drafts/pull/3092@github.com>
Subject: Re: [quicwg/base-drafts] MUST ACK each ack-eliciting packet once (#3092)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5daebe1a4c52a_33e93ff4caccd96434305b"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: martinthomson
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/x4FBfV3tRNug5k0btvSiNDrySlc>
X-BeenThere: quic-issues@ietf.org
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <quic-issues.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic-issues/>
List-Post: <mailto:quic-issues@ietf.org>
List-Help: <mailto:quic-issues-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic-issues>, <mailto:quic-issues-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Oct 2019 08:30:21 -0000

martinthomson commented on this pull request.



> @@ -3007,9 +3007,6 @@ guidance offered below seeks to strike this balance.
 
 ### Sending ACK Frames {#sending-acknowledgements}
 
-An ACK frame SHOULD be generated for at least every second ack-eliciting packet.
-This recommendation is in keeping with standard practice for TCP {{?RFC5681}}.
-
 An endpoint MUST NOT excessively delay acknowledgements of ack-eliciting

If you send an ACK for every other received packet and drop all older acknowledgments, then you use at most 19 bytes for an ACK, probably less.  I don't think that will break any limits.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/quicwg/base-drafts/pull/3092#discussion_r337385994

v2.20.3 | Report a Bug | By Email