Re: [quicwg/base-drafts] Update ACK generation policy (#3501)

ianswett <> Sun, 22 March 2020 19:27 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 5E97F3A081C for <>; Sun, 22 Mar 2020 12:27:53 -0700 (PDT)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -1.554
X-Spam-Status: No, score=-1.554 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, DKIM_VALID_EF=-0.1, HTML_IMAGE_ONLY_20=1.546, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001] autolearn=ham autolearn_force=no
Authentication-Results: (amavisd-new); dkim=pass (1024-bit key)
Received: from ([]) by localhost ( []) (amavisd-new, port 10024) with ESMTP id uxhjgZS4C_cK for <>; Sun, 22 Mar 2020 12:27:52 -0700 (PDT)
Received: from ( []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id 2AA333A0814 for <>; Sun, 22 Mar 2020 12:27:51 -0700 (PDT)
Received: from ( []) by (Postfix) with ESMTP id 2566BC605BC for <>; Sun, 22 Mar 2020 12:27:51 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=pf2014; t=1584905271; bh=FE8qTerCTVDExoTi61zgSF+bWGhXT8UGm/keAON7Xkc=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=uNqc/yvEp6C352WqQWpbiv6kCGnjhKiHcEeMq7DauNQ1aWv6SfS1Ra26e5H84RxMa +nerqn3RcPlKeLcT2fcw89ERZRdfXw63JN0590r0wWlOd8wbmRw1YQqXlE3Qoianh8 UZZakFIELYkax9Bd+bWVQunQcfxaT5szov0hUXCk=
Date: Sun, 22 Mar 2020 12:27:51 -0700
From: ianswett <>
Reply-To: quicwg/base-drafts <>
To: quicwg/base-drafts <>
Cc: Subscribed <>
Message-ID: <quicwg/base-drafts/pull/3501/review/>
In-Reply-To: <quicwg/base-drafts/pull/>
References: <quicwg/base-drafts/pull/>
Subject: Re: [quicwg/base-drafts] Update ACK generation policy (#3501)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5e77bc3715bee_21c53fdabcacd95c936d9"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: ianswett
X-GitHub-Recipient: quic-issues
X-GitHub-Reason: subscribed
X-Auto-Response-Suppress: All
Archived-At: <>
X-Mailman-Version: 2.1.29
List-Id: Notification list for GitHub issues related to the QUIC WG <>
List-Unsubscribe: <>, <>
List-Archive: <>
List-Post: <>
List-Help: <>
List-Subscribe: <>, <>
X-List-Received-Date: Sun, 22 Mar 2020 19:27:54 -0000

ianswett commented on this pull request.

> @@ -3170,11 +3170,21 @@ delayed retransmissions from the peer. For Initial and Handshake packets,
 a max_ack_delay of 0 is used. The sender uses the receiver's `max_ack_delay`
 value in determining timeouts for timer-based retransmission, as detailed in
 Section 5.2.1 of {{QUIC-RECOVERY}}.
+The max_ack_delay needs to be set so that at least several samples can

max_ack_delay is unilateral, chosen prior to an RTT sample, and never changed over the course of the connection(unless one implements the ack-frequency extension, of course).

You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub: