IETF Logo Mail Archive

[Webtransport] Http3Transport: Connection-basd Functionality

Luke Curley <kixelated@gmail.com> Fri, 19 February 2021 20:49 UTC

Return-Path: <kixelated@gmail.com>
X-Original-To: webtransport@ietfa.amsl.com
Delivered-To: webtransport@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 468743A150A for <webtransport@ietfa.amsl.com>; Fri, 19 Feb 2021 12:49:43 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -7.098
X-Spam-Level:
X-Spam-Status: No, score=-7.098 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001, 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 (2048-bit key) header.d=gmail.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 jMDTT-iFM9Y9 for <webtransport@ietfa.amsl.com>; Fri, 19 Feb 2021 12:49:41 -0800 (PST)
Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) (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 968503A1509 for <webtransport@ietf.org>; Fri, 19 Feb 2021 12:49:41 -0800 (PST)
Received: by mail-wm1-x333.google.com with SMTP id o15so8090328wmq.5 for <webtransport@ietf.org>; Fri, 19 Feb 2021 12:49:41 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=ROq3muAIosElgX/i9UKmksh19C/ygo6sr3xJa1Y9GRI=; b=PeWTNMCzY5ODtiPCEw/FE7RtIuPuxPLeS7Q189NePlcDS32cr4LcNnqsFislAu5yUB lTUEPQnk7KJK0l5n/87JtlOJWc3HxnRswQyomss4FjI0WT3i+jipMvZWHU6hl6mwm4O1 NzFiXCJWSrhDilTkSLMBaigyJFg3WW+KW+AY0FRZGz2aHPMB9xMfDs+HqBzukxncwrkH yPNabNw/g2PGXx2TIQBS1o4+gz4T+Be0YSIdUwclLOfSr+pnk7DlJWUztBpx6f8gCZEO wtJY+No4bkKzDdAyIJ/wc7BrRtGnhUXtLXlRUpeirXEq8WOIozMTyaPkVob+kK5LXaUy tl+Q==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=ROq3muAIosElgX/i9UKmksh19C/ygo6sr3xJa1Y9GRI=; b=UGDCcznFWV1JcKQ5zeIx0s5pvhbqPx/IxXvWf4ykEZlIpCXR2vK51ejBIAgtM4ohzb o3aX4gSlZzgXuEc5+0mjFnADkYww3ZsjkkxMtybr1aBfPqahy8htTlz0SRdTT2aKrWzF qQBFHzJLn3V24x5yuNJvx4DdCKeF0Xf7sWFDm0U0cPe94J+pspKfa9VCkmcCjSHOJ6EC ff6E4+asYwJqBa4+SNhGYr4LXr59/q3KicS4jySiXtMu0kCOxEduQ1yWMl/OmZIHWXF6 R/In8C5c+vfbHeSCvyN2hhN6Pmm2OjxsFnGN0qi6RdyATXsZzeQFQ5YJdVMgDMU8wTIW 2THw==
X-Gm-Message-State: AOAM530wbnR2Yyp9Rw3IkPsos9OjM1fxaDhnDTvTvO1FCDzfulTDgRYb OFE9Y1HMWsASBqCJrnaHSgH8nnrTlANK8aBxGD1CQaWgyzu8Zw==
X-Google-Smtp-Source: ABdhPJyiS6hw/VjpX1EAyLdP5+sEcjrBdUqQi21L8h4Ymm2moZUV8UsewHPvyIhwDRhIGdEx4ukx9hqDcwx6SREpPTI=
X-Received: by 2002:a1c:4386:: with SMTP id q128mr9706777wma.184.1613767779607; Fri, 19 Feb 2021 12:49:39 -0800 (PST)
MIME-Version: 1.0
From: Luke Curley <kixelated@gmail.com>
Date: Fri, 19 Feb 2021 12:49:28 -0800
Message-ID: <CAHVo=ZmRketpx02KeYPSHSB2gQNvYi6RSs3HrXA1isYTgYorLg@mail.gmail.com>
To: WebTransport <webtransport@ietf.org>
Content-Type: multipart/alternative; boundary="00000000000040e78c05bbb697fe"
Archived-At: <https://mailarchive.ietf.org/arch/msg/webtransport/-m9ha6QZXARIk2FbXI_FJ_ui8hg>
Subject: [Webtransport] Http3Transport: Connection-basd Functionality
X-BeenThere: webtransport@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: <webtransport.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/webtransport>, <mailto:webtransport-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/webtransport/>
List-Post: <mailto:webtransport@ietf.org>
List-Help: <mailto:webtransport-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/webtransport>, <mailto:webtransport-request@ietf.org?subject=subscribe>
X-List-Received-Date: Fri, 19 Feb 2021 20:49:43 -0000

Hey everybody, I wanted to start the discussion now that Victor's document
has been adopted!

I filed some issues
<https://github.com/ietf-wg-webtrans/draft-ietf-webtrans-http3> earlier on
Github over a few small things. Overall, the draft is clean and it's nice
that we've converged on a single WebTransport protocol. One bigger topic I
wanted to discuss is the ramifications of connection pooling.

Broadly speaking, any QUIC parameters or frames that operate on the
connection as a whole can no longer be exposed to the application.
Specifically: MAX_DATA, MAX_STREAMS, CONNECTION_CLOSE*, connection ID, and
any transport parameters.

The WebTransport specification specifically mentions MAX_STREAMS, as HTTP/3
servers can no longer use this to limit the number of simultaneous
requests. Returning an error code instead of utilizing the built-in flow
control is not a problem, but it's not ideal either.

I believe this is a one-way door in general. Any protocols or applications
built on top of QUIC will no longer be able to use connection-based QUIC
features without breaking WebTransport compatibility. This primarily means
HTTP/3, but it also includes any new protocols that utilize QUIC and desire
browser support.

What does the group think? Is this something worth caring about?

v2.8.7 | Report a Bug | By Email