Subject: Re: [lp-wan] Draft for CoAP compression

From: Carsten Bormann <[email-masked]>
Date: Mon, 14 Nov 2016 15:09:30 +0900

Nice.

A couple of comments:

— We limited TKL to 8 (not 15).  (And we don’t like to call a zero-length token “no token” — there is always a token, it’s only sometimes very short.)

— A response is not an acknowledgment (even though it can be piggybacked on one).

— we are registering new values for response codes all the time (e.g., RFC 7959 registered two, and draft-ietf-core-etch is registering more, plus a few request codes).  How do we handle those?

(and the last point also applies to other CoAP extension points, such as option numbers…)

We might be able to statically agree on a table with a small number of content-formats, saving a few bits.

Grüße, Carsten