[core] Signaling messages for CoAP over TCP/TLS/Websockets

Carsten Bormann <cabo@tzi.org> Sat, 11 June 2016 15:28 UTC

Return-Path: <cabo@tzi.org>
X-Original-To: core@ietfa.amsl.com
Delivered-To: core@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 786F712D100 for <core@ietfa.amsl.com>; Sat, 11 Jun 2016 08:28:19 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.6
X-Spam-Level:
X-Spam-Status: No, score=-2.6 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xYyYpEudTf5W for <core@ietfa.amsl.com>; Sat, 11 Jun 2016 08:28:17 -0700 (PDT)
Received: from relay4-d.mail.gandi.net (relay4-d.mail.gandi.net [IPv6:2001:4b98:c:538::196]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 712EF12D0E9 for <core@ietf.org>; Sat, 11 Jun 2016 08:28:17 -0700 (PDT)
Received: from dynamic-218-3.informatik.uni-bremen.de (unknown [IPv6:2001:638:708:30da:2cd2:f1f7:2c18:50a0]) (Authenticated sender: cabo@cabo.im) by relay4-d.mail.gandi.net (Postfix) with ESMTPSA id 8CB761720A3; Sat, 11 Jun 2016 17:28:15 +0200 (CEST)
Message-ID: <575C2E0D.9030907@tzi.org>
Date: Sat, 11 Jun 2016 17:28:13 +0200
From: Carsten Bormann <cabo@tzi.org>
User-Agent: Postbox 4.0.8 (Macintosh/20151105)
MIME-Version: 1.0
To: "core@ietf.org WG" <core@ietf.org>
X-Enigmail-Version: 1.2.3
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8bit
Archived-At: <https://mailarchive.ietf.org/arch/msg/core/53M9ee01WxkRYTERkYlVJNcc070>
Subject: [core] Signaling messages for CoAP over TCP/TLS/Websockets
X-BeenThere: core@ietf.org
X-Mailman-Version: 2.1.17
Precedence: list
List-Id: "Constrained RESTful Environments \(CoRE\) Working Group list" <core.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/core>, <mailto:core-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/core/>
List-Post: <mailto:core@ietf.org>
List-Help: <mailto:core-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/core>, <mailto:core-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 11 Jun 2016 15:28:19 -0000

Klaus, Matthias and I did a bit of a sprint over the last couple of days
completing the signaling messages proposal that I talked about in Buenos
Aires.  This is supposed to address the following tickets on
CoAP-over-TCP-and-TLS:

#400 (message sizes),
#388 (by providing a foundation for a mechanism for version negotiation,
once that is needed),
#390 (connection close reason),
#391 (server name indication),
#394 (ping/pong).

We are not necessarily saying that we must have all these functions, but
that, if we want to have them, they would work well in the form proposed.

Please have a look at

https://tools.ietf.org/html/draft-bormann-core-coap-sig-01

If you think that a specific function is useful (or should be done in
another way), now would be a good time to hear about that.
The -sig draft should probably live a short life on its own until we are
satisfied with the approach; then we can put the text into the TTW draft.

There are a few more tickets open on CoAP over TCP/TLS/Websockets, most
of which will be resolved by merging the two drafts (TCP/TLS and
Websockets).  The remaining item is BERT, which, if we like it, we could
simply adopt and then integrate into the merged TTW draft:

https://tools.ietf.org/html/draft-bormann-core-block-bert-01

Grüße, Carsten