Re: [quicwg/base-drafts] GOAWAY initiating a graceful shutdown can carry a huge stream ID (#3343)

ianswett <notifications@github.com> Wed, 15 January 2020 00:02 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 4EC4D12006D for <quic-issues@ietfa.amsl.com>; Tue, 14 Jan 2020 16:02:06 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -8
X-Spam-Level:
X-Spam-Status: No, score=-8 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_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 Tz5StQnk8cM4 for <quic-issues@ietfa.amsl.com>; Tue, 14 Jan 2020 16:01:59 -0800 (PST)
Received: from out-12.smtp.github.com (out-12.smtp.github.com [192.30.254.195]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id C2598120058 for <quic-issues@ietf.org>; Tue, 14 Jan 2020 16:01:59 -0800 (PST)
Date: Tue, 14 Jan 2020 16:01:59 -0800
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=github.com; s=pf2014; t=1579046519; bh=3UBuvjUwwglkufY7nMo9TGTaPBFHadHjdrNGpwnknSU=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=dzHwJvJvmJlvT/9fsFksLwazn6Nlzyze89XzwElWjVgt0CbJ+P6dc3dM/6Jcf+f9D sVMjp1tYBHbpIID8qDH4V8jYP0tMLZYAIHONFMsU0d0wwiV1liGNs1iM54v+Vzck4w ajnw9c6y1N0QIM9ig+4A0M47PRVZOGS5E5m/6SlQ=
From: ianswett <notifications@github.com>
Reply-To: quicwg/base-drafts <reply+AFTOJKY3LUUGDSOLGZ3QP2N4FOEPPEVBNHHCBRUE74@reply.github.com>
To: quicwg/base-drafts <base-drafts@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Message-ID: <quicwg/base-drafts/pull/3343/review/342916931@github.com>
In-Reply-To: <quicwg/base-drafts/pull/3343@github.com>
References: <quicwg/base-drafts/pull/3343@github.com>
Subject: Re: [quicwg/base-drafts] GOAWAY initiating a graceful shutdown can carry a huge stream ID (#3343)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5e1e5677e42a_1d2e3fbb19ecd95c767df"; 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
X-GitHub-Recipient-Address: quic-issues@ietf.org
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic-issues/GJZYUbhbW3reawwizvDh3E8HmzQ>
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: Wed, 15 Jan 2020 00:02:06 -0000

ianswett commented on this pull request.

LG

> @@ -727,12 +727,14 @@ indicating different stream IDs, but MUST NOT increase the value they send in
 the last Stream ID, since clients might already have retried unprocessed
 requests on another connection.  A server that is attempting to gracefully shut
 down a connection SHOULD send an initial GOAWAY frame with the last Stream ID
-set to the maximum value allowed by QUIC's MAX_STREAMS and SHOULD NOT increase
-the MAX_STREAMS limit thereafter.  This signals to the client that a shutdown is
-imminent and that initiating further requests is prohibited.  After allowing
-time for any in-flight requests (at least one round-trip time), the server MAY
-send another GOAWAY frame with an updated last Stream ID.  This ensures that a
-connection can be cleanly shut down without losing requests.
+set to the maximum value allowed by the concurrency control of QUIC for the
+client-initiated, bidirectional streams (see section 4.5 of {{QUIC-TRANSPORT}})
+or any value above that, and SHOULD forbid the QUIC transport from granting
+additional concurrency credits thereafter.  This signals to the client that a
+shutdown is imminent and that initiating further requests is prohibited.  After
+allowing time for any in-flight requests (at least one round-trip time), the
+server MAY send another GOAWAY frame with an updated last Stream ID.  This
+ensures that a connection can be cleanly shut down without losing requests.

```suggestion
ensures that a connection can be cleanly shut down without causing requests to fail.
```

-- 
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/3343#pullrequestreview-342916931