Re: ORIGIN - suggested changes

Mark Nottingham <mnot@mnot.net> Fri, 03 February 2017 00:47 UTC

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From: Mark Nottingham <mnot@mnot.net>
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Date: Fri, 3 Feb 2017 11:43:03 +1100
In-Reply-To: <373E9285-B023-4D42-A749-368649E34252@mnot.net>
Cc: Martin Thomson <martin.thomson@gmail.com>, "Nygren, Erik" <nygren@akamai.com>
To: HTTP Working Group <ietf-http-wg@w3.org>
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Subject: Re: ORIGIN - suggested changes
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I've done some more updating:
  https://github.com/httpwg/http-extensions/pull/285

At this point, the diff isn't too helpful, so see attached.

Changes include:

1. Removing set manipulation flags
2. Reserving some flags for future backwards-incompatible extensions (which makes me feel a bit better about #1)
3. Note impact upon Server Push
4. Added IANA Considerations and Operational Considerations
5. Lots of clarifications

Feedback welcome, as always.




> On 2 Feb 2017, at 12:30 pm, Mark Nottingham <mnot@mnot.net> wrote:
> 
> 
>> On 2 Feb 2017, at 12:23 pm, Martin Thomson <martin.thomson@gmail.com> wrote:
>> 
>> On 2 February 2017 at 10:12, Mark Nottingham <mnot@mnot.net> wrote:
>>> I don't buy the argument that removal itself adds complexity. Implementations already need to remember what origins they received a 421 for, so they already have the concept of origin set removal.
>> 
>> Well, you just established why it might be unnecessary.  The gain here
>> is in the client not sending a request to the wrong place.  But if
>> this is rare enough, then that cost is probably bearable.
> 
> Right, but the whole point of ORIGIN is to avoid those situations. 
> 
> 
>> The "everything except those" case doesn't concern me that much.
>> Iknow it's relatively common, but it is fairly rare that the set of
>> origins that are used is not easily enumerable, or incrementally
>> discoverable.
> 
> Spoken like a true browser vendor :) 
> 
> It'd be good to get a bit more data here from server-side folks. Anyone share this concern? I note that Nick seems to be OK with it.
> 
> Cheers,
> 
> --
> Mark Nottingham   https://www.mnot.net/
> 
> 

--
Mark Nottingham   https://www.mnot.net/