Re: Duplicated TPs vs duped HTTP/3 settings

Jana Iyengar <jri.ietf@gmail.com> Fri, 10 May 2019 01:39 UTC

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From: Jana Iyengar <jri.ietf@gmail.com>
Date: Thu, 09 May 2019 18:39:13 -0700
Message-ID: <CACpbDce2WJeh8v-Q1_Jrw9oMYwzky+Nts2Nj1mVnQZA-y4papQ@mail.gmail.com>
Subject: Re: Duplicated TPs vs duped HTTP/3 settings
To: IETF QUIC WG <quic@ietf.org>
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Hi Dmitri,

Your proposal sounds quite reasonable. Can you open an issue for it? This
will be a design issue that will need consensus.

- jana

On Fri, May 3, 2019 at 5:22 AM Dmitri Tikhonov <dtikhonov@litespeedtech.com>
wrote:

> Hello,
>
> A recent GitHub discussion [1] reminded me that duplicated transport
> parameters MUST be treated as error [2].  This is in contrast to
> duplicated HTTP/3 settings, which MAY be treated as an error.
>
> Why the inconsistency?
>
> The checks for duplicated transport (or settings) parameters are
> expensive, because one has to maintain an arbitrarily-sized set
> of possibly large numbers.
>
> I propose we switch the duplicate TP parameters enforcement to
> "MAY treat as error."
>
>   - Dmitri.
>
> 1. https://github.com/quicwg/base-drafts/issues/2663
> 2. https://tools.ietf.org/html/draft-ietf-quic-transport-20#section-7.3
>
>