Re: Unicode escape sequence | Re: draft-ietf-httpbis-header-structure-00, unicode range

Julian Reschke <julian.reschke@gmx.de> Fri, 23 December 2016 17:23 UTC

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To: Mark Nottingham <mnot@mnot.net>, Poul-Henning Kamp <phk@phk.freebsd.dk>
References: <20161213173327.C1F7D1714B@welho-filter2.welho.com> <20161213175419.GA7943@LK-Perkele-V2.elisa-laajakaista.fi> <25434.1481665395@critter.freebsd.dk> <201612140628.uBE6SO3L025885@shell.siilo.fmi.fi> <36792.1481701328@critter.freebsd.dk> <CACweHNDKgWQewZHb=Kz3_2=41M58sY5472Q5OwpqPLxorvkzHQ@mail.gmail.com> <37223.1481707288@critter.freebsd.dk> <3a65ca44-f652-3b14-6d64-46f35b32df57@isode.com> <55880.1481711031@critter.freebsd.dk> <95057a05-6714-9154-8cf8-7cd302c86715@gmx.de> <60914.1481712680@critter.freebsd.dk> <CABkgnnWzOhkznH2HzweNegYo4dDHE+DT0PM=eCSvVr+-Wkup1A@mail.gmail.com> <63340.1481720099@critter.freebsd.dk> <C8F21FA8-8B03-4E9C-B0E8-CD3C9CF028CE@mnot.net> <56063.1482509609@critter.freebsd.dk> <2C87FAB2-33B3-44FE-A2FB-EB0BD384E87F@mnot.net>
Cc: Martin Thomson <martin.thomson@gmail.com>, Alexey Melnikov <alexey.melnikov@isode.com>, Matthew Kerwin <matthew@kerwin.net.au>, Kari Hurtta <hurtta-ietf@elmme-mailer.org>, Ilari Liusvaara <ilariliusvaara@welho.com>, HTTP working group mailing list <ietf-http-wg@w3.org>, Poul-Henning Kamp <phk@varnish-cache.org>
From: Julian Reschke <julian.reschke@gmx.de>
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Date: Fri, 23 Dec 2016 18:19:18 +0100
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Subject: Re: Unicode escape sequence | Re: draft-ietf-httpbis-header-structure-00, unicode range
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On 2016-12-23 17:36, Mark Nottingham wrote:
>
>> On 23 Dec. 2016, at 11:13 am, Poul-Henning Kamp <phk@phk.freebsd.dk> wrote:
>>
>> --------
>> In message <C8F21FA8-8B03-4E9C-B0E8-CD3C9CF028CE@mnot.net>et>, Mark Nottingham wri
>> tes:
>>
>>> And, as discussed previously, there aren't a lot of use cases for
>>> non-ASCII header values in standards (because few have a payload that's
>>> exposed to end users), so the reward for taking that risk is
>>> questionable.
>>
>> But isn't that an almost circular[1] argument, when there is no
>> safe standardized way to put non-ASCII into header values in the
>> first place ?
>
> There is -- RFC5987 encoding. Not pretty or efficient, but implemented and interoperable. Used in Content-Disposition, Link (although not much), and not much else AFAIK (Julian?).

It's used in the new Digest spec, but I don't believe it's implemented yet.

 > ...

Best regards, Julian