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Re: Adam Roach's Discuss on draft-ietf-httpbis-expect-ct-07: (with DISCUSS and COMMENT)

Julian Reschke <julian.reschke@gmx.de> Wed, 19 September 2018 16:27 UTC

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To: Adam Roach <adam@nostrum.com>, The IESG <iesg@ietf.org>
Cc: draft-ietf-httpbis-expect-ct@ietf.org, Mark Nottingham <mnot@mnot.net>, httpbis-chairs@ietf.org, ietf-http-wg@w3.org
References: <153682169290.9530.10396840495307914328.idtracker@ietfa.amsl.com>
From: Julian Reschke <julian.reschke@gmx.de>
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Date: Wed, 19 Sep 2018 18:24:52 +0200
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Subject: Re: Adam Roach's Discuss on draft-ietf-httpbis-expect-ct-07: (with DISCUSS and COMMENT)
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On 9/13/2018 8:54 AM, Adam Roach wrote:
> ...
> §2.1.3:
> 
>>   The "max-age" directive is REQUIRED to be present within an "Expect-
>>   CT" header field.
> 
> This doesn't appear to be true as stated; or, at least, it is stated in a
> somewhat confusing way. A casual reading of this requirement is that an
> "Expect-CT" header field is noncompliant if it is missing this directive.
> Based on the examples given, the actual requirement here is that a response
> that contains an Expect-CT header field MUST contain an Expect-CT header field
> with a max-age directive, although that directive does not necessarily need to
> appear in each Expect-CT header field. This should probably be clarified.
> ...

That's another case where progress on 
<https://github.com/httpwg/http-core/issues/111> would help. This 
plagues other WG drafts as well.

Best regards, Julian

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