Re: [http-state] [Technical Errata Reported] RFC6265 (3444)

Adam Barth <ietf@adambarth.com> Mon, 07 January 2013 20:48 UTC

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From: Adam Barth <ietf@adambarth.com>
Date: Mon, 7 Jan 2013 12:48:13 -0800
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To: Barry Leiba <barryleiba@computer.org>
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Cc: Julian Reschke <julian.reschke@gmx.de>, Pete Resnick <presnick@qti.qualcomm.com>, Bjoern Hoehrmann <derhoermi@gmx.net>, Eran Hammer <eran@hueniverse.com>, http-state <http-state@ietf.org>, RFC Errata System <rfc-editor@rfc-editor.org>
Subject: Re: [http-state] [Technical Errata Reported] RFC6265 (3444)
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On Mon, Jan 7, 2013 at 12:28 PM, Barry Leiba <barryleiba@computer.org>; wrote:
>>>>> Happy to go that route.  So how about this correction?:
>>>>>
>>>>>     path-value        = *av-octet
>>>>>     extension-av      = *av-octet
>>>>>     av-octet          = %x20-3A / %x3C-7E
>>>>>                       ; any CHAR except CTLs or ";"
>>
>> So you want to allow space but not tab, right?
>
> Well, that's what the current text ("any CHAR except CTLs") says.  If
> we want to "fix" that, then now's the time, while we're
> precisificatifying the ABNF.
>
> So, which should it be?:
>
> 1:  av-octet = %x20-3A / %x3C-7E    (allows space, but not tab)
>
> 2:  av-octet = %x21-3A / %x3C-7E    (allows neither space nor tab)
>
> 3:  av-octet = %x09 / %x20-3A / %x3C-7E    (allows both space and tab)

This grammar is intentionally "loose" because there is such a wide
variety of crazy Set-Cookie headers in the world.  Allowing tab
doesn't seem harmful, so I'd recommend (3).

Adam