IETF Logo Mail Archive

Re: Space for Packet Metadata

Eric Rescorla <ekr@rtfm.com> Wed, 28 February 2018 14:08 UTC

Return-Path: <ekr@rtfm.com>
X-Original-To: quic@ietfa.amsl.com
Delivered-To: quic@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 5EC9312D7F8 for <quic@ietfa.amsl.com>; Wed, 28 Feb 2018 06:08:07 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.599
X-Spam-Level:
X-Spam-Status: No, score=-2.599 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HTML_MESSAGE=0.001, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=rtfm-com.20150623.gappssmtp.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 rwS2Hbp7PaQy for <quic@ietfa.amsl.com>; Wed, 28 Feb 2018 06:08:06 -0800 (PST)
Received: from mail-qk0-x234.google.com (mail-qk0-x234.google.com [IPv6:2607:f8b0:400d:c09::234]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 10C4912DA4C for <quic@ietf.org>; Wed, 28 Feb 2018 06:08:00 -0800 (PST)
Received: by mail-qk0-x234.google.com with SMTP id s198so3074220qke.5 for <quic@ietf.org>; Wed, 28 Feb 2018 06:08:00 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rtfm-com.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=Q3j0TB6DIO/CFEPjPJressV4WNtwC2lsV/UqXfd8uZ0=; b=o8DwclpSK7JzNNolZK3B1W19OxvGlw9Rr6fxkFIK9W2sEIZGKOX2FID8nZhkL5worB X8ZO9by/XbJmOAYqHxOxHjEhjtMuNbJD2dWRjQXcw8sSJGhVMyb+iSZIAx6Eth3uvtZr LnBHJkgjIBrxFih99HtDk73ael/O6n4GVYn5yF+0DBdV+y4Ej+BXBtqeB3S46FivXph7 Ck+xzVowSRxpdcUSkTMIoDzF55W+uHN3jk0dsE/7o8sk7wU5AAKvMnt3PatowhfA3j1L G8b7cvKz5UN62vKl/r/bvg+wu6/Yky3GM0FS5I8Sy/grJT6jP2pFa+qNEI85WR049z6T 7i6Q==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=Q3j0TB6DIO/CFEPjPJressV4WNtwC2lsV/UqXfd8uZ0=; b=mULR4y2LCrT7oXWFp7MSzdBqyHFGan4GxZDuIuVcnvWtv8WpnXS3xMvIalKc/jhjs3 qYjfDxcVB+R4NNmulwfrrE+eZe5TU9dIutIQJJktUxeQtf7d10OKFwNPpxwjyftVOc+u kaC80hPCqJt+CO/WZ8ejPAR70PwvnH0DgwPA40xXwNkrs000zrG7jeB3RPZpFUTnACqj W8adEzM37TMDdDvUhLWnC0AV2W9h+EEG6VyWRr45diXwaySXcWGkkvK5sfNpTIM98v/C /e9JlQ09v/XD1XOWBndGa+qo13vPGJ7zEZLxs1/JHPb5RDsS96bkMDT1BaZTyzKgbcEZ JZ6A==
X-Gm-Message-State: APf1xPCPjXLPsH4CsdJ61u55cRhBWDUOaQoYIV2XY8fUNonAMex8+yJf QQn2BdJmVXixb9WY9HI6gZ6dHWQXylH5vtMFlh3Sm2vl
X-Google-Smtp-Source: AG47ELsFHiEOOoOrSj0CgQWhWBfVp7OSr+S2Oegue0XTreVVtDIzacG2+bO4lnv+icsi/g6OIoI/tO6joodwvUSaDfE=
X-Received: by 10.55.9.135 with SMTP id 129mr26914880qkj.221.1519826879114; Wed, 28 Feb 2018 06:07:59 -0800 (PST)
MIME-Version: 1.0
Received: by 10.200.37.176 with HTTP; Wed, 28 Feb 2018 06:07:18 -0800 (PST)
In-Reply-To: <CAN1APdfx4Y4MUm5iAF99Vn1Svck5y2e6_qrNbozkwJWics17eQ@mail.gmail.com>
References: <CAN1APdfx4Y4MUm5iAF99Vn1Svck5y2e6_qrNbozkwJWics17eQ@mail.gmail.com>
From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 28 Feb 2018 06:07:18 -0800
Message-ID: <CABcZeBORqwRKK1FM6Np_=qt3KAnrPb_L7NKNT_-KpucSDajCqQ@mail.gmail.com>
Subject: Re: Space for Packet Metadata
To: Mikkel Fahnøe Jørgensen <mikkelfj@gmail.com>
Cc: IETF QUIC WG <quic@ietf.org>
Content-Type: multipart/alternative; boundary="001a11487b8c400b52056646451f"
Archived-At: <https://mailarchive.ietf.org/arch/msg/quic/S_vC5D4gbbKGuK6tr6fnFFp7pm4>
X-BeenThere: quic@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: Main mailing list of the IETF QUIC working group <quic.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/quic>, <mailto:quic-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/quic/>
List-Post: <mailto:quic@ietf.org>
List-Help: <mailto:quic-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/quic>, <mailto:quic-request@ietf.org?subject=subscribe>
X-List-Received-Date: Wed, 28 Feb 2018 14:08:07 -0000

On Wed, Feb 28, 2018 at 12:11 AM, Mikkel Fahnøe Jørgensen <
mikkelfj@gmail.com> wrote:

> Would it make sense to reserve space for additional metadata by reducing
> the required initial packet size to, say 1000 octets in order to allow for
> a smaller PMTU than the actual PMTU?
>
> This could simplify tunnelling and monitoring, and also other cases where
> multiple servers cooperate on handling a single connection.
>

How do you imagine those servers would use this space?

-Ekr


> Kind Regards,
> Mikkel Fahnøe Jørgensen
>
>

v2.23.0 | Report a Bug | By Email