Subject: I-D Action: draft-ietf-core-observe-multicast-notifications-01.txt

From: [email-masked]
Date: Mon, 12 Jul 2021 08:35:22 -0700

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Constrained RESTful Environments WG of the IETF.

        Title           : Observe Notifications as CoAP Multicast Responses
        Authors         : Marco Tiloca
                          Rikard Höglund
                          Christian Amsüss
                          Francesca Palombini
	Filename        : draft-ietf-core-observe-multicast-notifications-01.txt
	Pages           : 77
	Date            : 2021-07-12

Abstract:
   The Constrained Application Protocol (CoAP) allows clients to
   "observe" resources at a server, and receive notifications as unicast
   responses upon changes of the resource state.  In some use cases,
   such as based on publish-subscribe, it would be convenient for the
   server to send a single notification addressed to all the clients
   observing a same target resource.  This document updates RFC7252 and
   RFC7641, and defines how a server sends observe notifications as
   response messages over multicast, synchronizing all the observers of
   a same resource on a same shared Token value.  Besides, this document
   defines how Group OSCORE can be used to protect multicast
   notifications end-to-end between the server and the observer clients.

The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-core-observe-multicast-notifications/

There is also an HTML version available at:
https://www.ietf.org/archive/id/draft-ietf-core-observe-multicast-notifications-01.html

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-core-observe-multicast-notifications-01

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/