Re: Editorial Issue: Unknown/Undefined Settings IDs

Martin Thomson <martin.thomson@gmail.com> Fri, 26 April 2013 20:53 UTC

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Date: Fri, 26 Apr 2013 13:52:29 -0700
Message-ID: <CABkgnnXRh51N_BfvMMDHVHaOMO+3dETys6cx8zY1Mr6m-Jz2DQ@mail.gmail.com>
From: Martin Thomson <martin.thomson@gmail.com>
To: James M Snell <jasnell@gmail.com>
Cc: "ietf-http-wg@w3.org" <ietf-http-wg@w3.org>
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Subject: Re: Editorial Issue: Unknown/Undefined Settings IDs
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See earlier response.  If you want something other than "MUST ignore"
it's possible to negotiate a different protocol.

An alternative is to add a flag to settings that mark them as "MUST understand".

On 26 April 2013 13:47, James M Snell <jasnell@gmail.com>; wrote:
> We currently define Settings as being extensible but we do not define,
> as far as I can tell, what should happen if a Settings ID is not known
> or recognized by an endpoint.
>
> We could define it as MUST IGNORE but that could be dangerous
> depending on what the new setting is being used for.
>