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

"Poul-Henning Kamp" <phk@phk.freebsd.dk> Wed, 14 December 2016 10:54 UTC

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To: Julian Reschke <julian.reschke@gmx.de>
cc: 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>
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From: 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>
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Subject: Re: Unicode escape sequence | Re: draft-ietf-httpbis-header-structure-00, unicode range
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--------
In message <95057a05-6714-9154-8cf8-7cd302c86715@gmx.de>, Julian Reschke writes
:

>>> IETF has published BCP 137, which should be followed, unless there is a
>>> very good reason not to:
>>>  https://www.rfc-editor.org/bcp/bcp137.txt
>>>
>>> See section 5.1.
>>
>> So many RFCs, so little time...
>>
>> 	EmbeddedUnicodeChar =  %x5C.75.27 4*6HEXDIG %x27
>>
>> That works for me, but HPACK is not a big fan of it:
>>
>> 	19 + 6 + 11 + [4:6] * [5:6] + 11 = [67:83]
>>
>> Is that a show-stopper for anybody in Asia ?
>
>Why are we concerned with HPACK? Wouldn't we convert to raw UTF-8 before 
>HPACKing?

Well, UTF-8 would also go through HPACK, but by eye-ball it seems
that it would be more efficient.

But it would kill the "HPACK doesn't molest tunneled H1 headers" idea ?

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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