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Re: [core] ue of resource type in collections

Michel Veillette <Michel.Veillette@trilliant.com> Thu, 19 July 2018 13:55 UTC

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From: Michel Veillette <Michel.Veillette@trilliant.com>
To: Klaus Hartke <klaus.hartke@ericsson.com>, "consultancy@vanderstok.org" <consultancy@vanderstok.org>, Core <core@ietf.org>
Thread-Topic: [core] ue of resource type in collections
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Date: Thu, 19 Jul 2018 13:54:53 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/core/y1-7hCNi60ghpTgn1WfGy-dYYAE>
Subject: Re: [core] ue of resource type in collections
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The recommended list of CoAP resources listed in the original email conflict with current CoMI recommended resource (/c). To minimize the likelihood of conflicts, I recommend to define these resources under a single root resource.

For example:
</est/skg>;rt="ace.est.skg"
</est/crts>;rt="ace.est.crts"
</est>; rt="ace.est"
</est/att>;rt="ace.est.att"
</est/sren>;rt="ace.est.sren"
</est/sen>;rt="ace.est.sen"

Regards,
Michel

-----Original Message-----
From: core [mailto:core-bounces@ietf.org] On Behalf Of Klaus Hartke
Sent: Wednesday, July 18, 2018 10:00 AM
To: consultancy@vanderstok.org; Core <core@ietf.org>
Subject: Re: [core] ue of resource type in collections

Peter van der Stok wrote:
> The coaps-est server uses a collection of resources:
> The collection resource has been assigned rt=ace.est It is not clear 
> what the resource types of the underlying resources should be.

According to BCP 190 [1], the coaps-est draft should not mandate particular forms of URI substructure. So a server should be free to structure URIs as it sees fit, e.g.:

</a>;rt="ace.est"
</b>;rt="ace.est"
</c>;rt="ace.est"
</d>;rt="ace.est"
</e>;rt="ace.est"
</f>;rt="ace.est"

If a client has trouble selecting the right link from the above list (and they all look interchangeable to me), then you'd need to provide more specific link information, e.g.:

</a>;rt="ace.est.skg"
</b>;rt="ace.est.crts"
</c>; rt="ace.est"
</d>;rt="ace.est.att"
</e>;rt="ace.est.sren"
</f>;rt="ace.est.sen"

Klaus

[1] https://tools.ietf.org/html/bcp190
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