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Re: HPACK opcode bit patterns

From: Michael Sweet <msweet@apple.com>
Date: Wed, 06 Aug 2014 08:12:09 -0400
Cc: HTTP Working Group <ietf-http-wg@w3.org>
Message-id: <A4223B2F-7433-4820-9610-057D8D5CC4A5@apple.com>
To: David Krauss <potswa@gmail.com>

On Aug 6, 2014, at 6:58 AM, David Krauss <potswa@gmail.com> wrote:
> ...
> Also, an implementation can treat “without indexing” as “never indexed” and use a common code path, since the encodings are identical modulo a don’t-care bit. Wouldn’t be surprised if that was deliberate.

That's the approach I am taking, and frankly I wouldn't cry if we just did away with the semantic difference and just had "never indexed".  While I don't think the extra bit will make a huge difference in compression ratio, it would simplify all implementations and it puts the onus of efficient encoding on the sender (vs. intermediaries like proxies).

Michael Sweet, Senior Printing System Engineer, PWG Chair

Received on Wednesday, 6 August 2014 12:12:37 UTC

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