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Re: draft-ietf-httpbis-header-structure: handling multiple field values

Willy Tarreau <w@1wt.eu> Wed, 13 May 2020 03:37 UTC

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Date: Wed, 13 May 2020 05:33:45 +0200
From: Willy Tarreau <w@1wt.eu>
To: Julian Reschke <julian.reschke@gmx.de>
Cc: Poul-Henning Kamp <phk@phk.freebsd.dk>, Ian Clelland <iclelland@google.com>, HTTP Working Group <ietf-http-wg@w3.org>
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Subject: Re: draft-ietf-httpbis-header-structure: handling multiple field values
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On Wed, May 13, 2020 at 05:18:19AM +0200, Julian Reschke wrote:
> I wonder whether we should point out that each *individual* field line
> needs to conform to the syntax defined for the field value, so that
> splitting strings over lines would be disallowed.

I think that would be a nice addition. It would implicitly allow a
recipient to reject a message when it knows some fields are not
properly formatted, before recombining them. Your example with a
single double-quote could serve as an encouragement for some
intermediaries which want to be strict to systematically reject
such individual values early.

Willy

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