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Re: [hybi] Framing take IV [why fragment]

Ian Hickson <ian@hixie.ch> Wed, 04 August 2010 17:54 UTC

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Date: Wed, 04 Aug 2010 17:55:26 +0000
From: Ian Hickson <ian@hixie.ch>
To: Patrick McManus <mcmanus@ducksong.com>
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Cc: hybi@ietf.org
Subject: Re: [hybi] Framing take IV [why fragment]
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On Wed, 4 Aug 2010, Patrick McManus wrote:
> 
> But I also believe fragments with fixed lengths are simpler than a BER 
> because properly aligned lengths are always correct data - there are no 
> error cases as all the bits are defined to be some quantity regardless 
> of their arrangement. BER has error cases and determining the expressed 
> quantity requires multiple indirections and a significant algorithm to 
> use it.

As far as I can tell there are no error cases as defined in WebSockets.

Variable-width lengths also doesn't preclude chunking at a future point 
should it prove to be needed (which we would be able to tell because we 
would see authors making their application-layer protocols implement 
chunking on top of WebSockets).

-- 
Ian Hickson               U+1047E                )\._.,--....,'``.    fL
http://ln.hixie.ch/       U+263A                /,   _.. \   _\  ;`._ ,.
Things that are impossible just take longer.   `._.-(,_..'--(,_..'`-.;.'

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