Re: [quicwg/base-drafts] If you want a Stateless Reset you need to send a much larger packet than before (#2770)

Kazuho Oku <> Sun, 09 June 2019 21:34 UTC

Return-Path: <>
Received: from localhost (localhost []) by (Postfix) with ESMTP id 04321120046 for <>; Sun, 9 Jun 2019 14:34:49 -0700 (PDT)
X-Virus-Scanned: amavisd-new at
X-Spam-Flag: NO
X-Spam-Score: -6.605
X-Spam-Status: No, score=-6.605 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HTML_IMAGE_ONLY_28=1.404, HTML_MESSAGE=0.001, MAILING_LIST_MULTI=-1, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_DKIMWL_WL_HIGH=-0.01] 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 zh9Wz8LeydUR for <>; Sun, 9 Jun 2019 14:34:47 -0700 (PDT)
Received: from ( []) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by (Postfix) with ESMTPS id 0432612001E for <>; Sun, 9 Jun 2019 14:34:47 -0700 (PDT)
Date: Sun, 09 Jun 2019 14:34:45 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=pf2014; t=1560116085; bh=Q6tVqMYTVMGVHIeH6ymvv3KKIIdJ5ZRKJla2ogId/Q4=; h=Date:From:Reply-To:To:Cc:In-Reply-To:References:Subject:List-ID: List-Archive:List-Post:List-Unsubscribe:From; b=wUfB6UKKJS5NeG7YNplCGXKtb2p2RZVna7C7aiQWIr5lQF6FWa3FxvJfU3DLvQPOp RXYMtUuw9FH6mpaWDswTCn3xITeUbqlc2tKsrH7J+TUh8GzW7tYxIdtqWxmDApzmlM 43w6pZjRH0eOgXtH7uklDApA81U+Kd3hFL7fksiI=
From: Kazuho Oku <>
Reply-To: quicwg/base-drafts <>
To: quicwg/base-drafts <>
Cc: Subscribed <>
Message-ID: <quicwg/base-drafts/issues/2770/>
In-Reply-To: <quicwg/base-drafts/issues/>
References: <quicwg/base-drafts/issues/>
Subject: Re: [quicwg/base-drafts] If you want a Stateless Reset you need to send a much larger packet than before (#2770)
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="--==_mimepart_5cfd7b75d5a14_3e293f8f772cd9682465832"; charset="UTF-8"
Content-Transfer-Encoding: 7bit
Precedence: list
X-GitHub-Sender: kazuho
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, 09 Jun 2019 21:34:49 -0000

> We can put a bit more burden on the client and add text to indicate that if the client wants a stateless reject that's indistinguishable from other traffic, it needs to send a packet that's at least 1 byte larger than the minimum plausible incoming packet. In most circumstances, I expect this to naturally occur because the server connection ID will be longer than the client's.

I think this would be the logical outcome, even though I am not sure I like the complexity.

At the moment, minimum packet size is calculated like: 1 + len(dcid) + 4 + len(aead_tag). Changing this to 1 + max(len(dcid), len(scid)) + 4 + len(aead_tag) is not _that_ difficult.

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