Re: [core-parameters] Heads up for senml-versions

Esko Dijk <esko.dijk@iotconsultancy.nl> Tue, 06 April 2021 08:13 UTC

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From: Esko Dijk <esko.dijk@iotconsultancy.nl>
To: Jaime Jiménez <jaime@iki.fi>, "core-parameters@ietf.org" <core-parameters@ietf.org>
Thread-Topic: [core-parameters] Heads up for senml-versions
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Date: Tue, 06 Apr 2021 08:13:29 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/core-parameters/AaWzfNa3U8BVvLQKiLReoQzFrWU>
Subject: Re: [core-parameters] Heads up for senml-versions
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Hi Jaime,

As an outsider to SenML I think the reason for doing this particular encoding in the version number is not yet well explained in the draft.  Somewhere it should state e.g. "re-purposing the version number is preferred to adding an additional feature-bitmask field in a version-11 format, because shorter to encode in average use cases".  

The registry looks okay from what I can tell!
For the sake of caution it could be useful to already reserve one feature code (e.g. the last one?) to indicate a far-future-version that doesn't encode a particular set of features but leaves open the door towards a completely different format (not using the feature codes) some day. 

Regards
Esko

-----Original Message-----
From: core-parameters <core-parameters-bounces@ietf.org> On Behalf Of Jaime Jiménez
Sent: Monday, April 5, 2021 14:04
To: core-parameters@ietf.org
Subject: [core-parameters] Heads up for senml-versions

Dear CoRE parameters experts,

this is just a heads up for the draft-core-senml-versions which has now finished WGLC. Please have a look at the new sub-registry being created and if you have any issues with the content please let the chairs of CoRE know.

https://tools.ietf.org/html/draft-ietf-core-senml-versions-02#page-4

We intend to submit to IESG shortly, so your potential comments would be checked during the IESG review process.

Ciao!
-- 
Jaime Jiménez

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