Re: [http-state] parser rules of draft-ietf-httpstate-cookie-22

Peter Saint-Andre <stpeter@stpeter.im> Wed, 23 February 2011 22:57 UTC

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Date: Wed, 23 Feb 2011 15:57:56 -0700
From: Peter Saint-Andre <stpeter@stpeter.im>
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Cc: http-state <http-state@ietf.org>, iesg@iesg.org
Subject: Re: [http-state] parser rules of draft-ietf-httpstate-cookie-22
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On 2/23/11 3:07 PM, Roy T. Fielding wrote:

<snip/>

> Therefore, I would like you to change the ABNF so that it
> reflects the reality of (Set-)Cookie usage on the Internet,
> for the same reason that you have insisted the algorithm
> for user agent parsing reflects reality.  Changing the ABNF
> to include base64 does not do that -- it is just another
> fantasy production that differs from all prior specs of
> the cookie algorithm.  Changing it to
> 
>  cookie-value      = %x21-2B / %x2D-3A / %x3C-7E / %x80-FF
> 
> or just the minimum
> 
>  cookie-value      = %x21-2B / %x2D-3A / %x3C-7E

Hi Roy,

The latter seems fine, and in conversation with Adam he indicated to me
that he would not object to such a change.

However, I see no reason to include characters from the Unicode range
U+0080 to U+00FF in cookie-value. Among other reasons, characters above
U-00A1 would introduce the need for internationalization considerations
of the kind that have derailed many a standardization effort (e.g., in
Unicode U+00BE undergoes compatibility decomposition). Let's avoid that
can of worms if at all possible...

Peter

-- 
Peter Saint-Andre
https://stpeter.im/