Subject: [core] I-D Action: draft-ietf-core-observe-multicast-notifications-00.txt

From: [email-masked]
Date: Thu, 01 Apr 2021 05:49:54 -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 Hoeglund
                          Christian Amsuess
                          Francesca Palombini
	Filename        : draft-ietf-core-observe-multicast-notifications-00.txt
	Pages           : 68
	Date            : 2021-04-01

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 are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-core-observe-multicast-notifications-00
https://datatracker.ietf.org/doc/html/draft-ietf-core-observe-multicast-notifications-00

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