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[Ace] ace-coap-est: unclear definition of /.well-known/est URI

Esko Dijk <esko.dijk@iotconsultancy.nl> Wed, 12 September 2018 15:10 UTC

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From: Esko Dijk <esko.dijk@iotconsultancy.nl>
To: "ace@ietf.org" <ace@ietf.org>
Thread-Topic: ace-coap-est: unclear definition of /.well-known/est URI
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Date: Wed, 12 Sep 2018 15:10:18 +0000
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Subject: [Ace] ace-coap-est: unclear definition of /.well-known/est URI
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Dear all/authors of ace-coap-est,

Section 5 of ace-coap-est-05 indicates URI discovery is possible to find the EST functions entry point URI. Also a well-known URI is defined:

coaps://www.example.com/.well-known/est/ArbitraryLabel/<short-est>.

This URI seems more complicated than needed? What if we simply define an always-available well-known URI, usable without any discovery:

coaps://www.example.com/.well-known/est/<short-est>

This re-uses the well-known EST namespace which is exactly defined to do EST functions. So using the short-est names within this namespace should be fine.
It is important that a well-known URI is available that is usable without discovery, just like EST RFC 7030 defines it for https.
The "ArbitraryLabel" only makes the URI longer.

best regards
Esko Dijk

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