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Re: #536: clarify extensibility for :pseudo header fields

From: David Krauss <potswa@gmail.com>
Date: Tue, 1 Jul 2014 12:26:22 +0800
Cc: HTTP Working Group <ietf-http-wg@w3.org>
Message-Id: <8A7224ED-7EC8-4767-B9C7-2FDF53B38901@gmail.com>
To: Mark Nottingham <mnot@mnot.net>

On 2014–07–01, at 11:29 AM, Mark Nottingham <mnot@mnot.net> wrote:

> <https://github.com/http2/http2-spec/issues/536>
> 
> It looks like the options so far are:
> 
> 1) Define a registry for :headers
> 
> 2) Make the list of acceptable :headers static with respect to the ALPN token
> 
> Thoughts? Other options?

Reserve them to HTTP/2 alone. The ALPN sets are going to leak into the regular namespace, and vice versa. Whether or not a particular header is pseudo will be just one more point of confusion.

It would be nice if headers used for routing were segregated from others. This is already a distinguishing feature of the existing pseudo-headers. This doesn’t really dictate how extension should be accomplished, but more regulatory control over validity would help maximize the semantic value of the distinction between pseudo and normal.
Received on Tuesday, 1 July 2014 04:27:02 UTC

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