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Re: [hybi] Framing take IV

Douglas Otis <dotis@mail-abuse.org> Wed, 04 August 2010 16:53 UTC

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Date: Wed, 04 Aug 2010 09:53:29 -0700
From: Douglas Otis <dotis@mail-abuse.org>
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Subject: Re: [hybi] Framing take IV
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Please keep data handling state assertions explicit,
map out future options, and retain alignment.

     0      1      2      3          -           7
+--------------------------------------------------+
| str(1)|end(1)|cmp(1)|       Op-Code(5)           |
+--------------------------------------------------+
|                 Stream ID (8)                    |
+--------------------------------------------------+
|                 Length MS (8)                    |
+--------------------------------------------------+
|                 Length LS (8)                    |
+--------------------------------------------------+
|         Data (8) * Length + Pad to 32b           |
+--------------------------------------------------+

With this structure, the Op-Code field is independent
of data handling state.  By using "End", rather than
"Continue", null injection will not terminate handling
without error.  Detecting errors improves reliability
and security.

-Doug

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