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RE: Updated Binary Optimized Header Encoding Draft

From: Jeroen de Borst <J.deBorst@F5.com>
Date: Thu, 4 Oct 2012 04:02:16 +0000
To: James M Snell <jasnell@gmail.com>, "ietf-http-wg@w3.org" <ietf-http-wg@w3.org>
Message-ID: <445F70104F72BC4CBF0FBDE14145833F51A2D82D@SEAEMBX01.olympus.F5Net.com>
This is very similar to what was done in WAP (WSP 1.x specifically).

See section 8.4 in http://www.wapforum.org/tech/documents/WAP-203-WSP-20000504-a.pdf

Does this have to be re-invented? Are there significant benefits?


From: James M Snell [mailto:jasnell@gmail.com]
Sent: Wednesday, October 03, 2012 10:08 AM
To: ietf-http-wg@w3.org
Subject: Updated Binary Optimized Header Encoding Draft

FYI.. I have submitted an updated draft for the proposed Binary Optimized Header Encoding mechanism for the http2 effort.


A number of fairly significant changes have been made:

  1. The codepage identifier for registered header tokens has been removed.
  2. The Per-header flags field has been removed and replaced with specific individual bits to indicate character-based values and multiple values
  3. Value lengths have been increased from max 16-bit length to a max 22-bit length.

The encoding itself remains just as compact with these changes. With the http version header field, for example, requiring no more than 6 uncompressed bytes to represent.

As always, feedback is more than welcome.

- James
Received on Thursday, 4 October 2012 04:02:48 UTC

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