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Re: [core] wglc: coap caching and observe, caching underspecified

Klaus Hartke <hartke@tzi.org> Sat, 21 April 2012 02:54 UTC

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Date: Sat, 21 Apr 2012 04:54:42 +0200
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From: Klaus Hartke <hartke@tzi.org>
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Subject: Re: [core] wglc: coap caching and observe, caching underspecified
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Cullen Jennings <fluffy@iii.ca> wrote:
> This thread seems to be leading towards a separate bit in the option that indicates if a proxy needs to understand the option or not. Not sure what I think of that idea but it would be one possibility to consider.

Picking up Thomas Fossati's suggestion of forwarding unrecognised
options, I could imagine a bit that says "this option can be safely
forwarded by an intermediary that doesn't understand it".

With such a bit, specifying out-of-band whether an option is part of
the cache key doesn't work any longer, so I guess we'd need another
bit that says "this option is part of the cache key".


Klaus

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