I-D Action: draft-ietf-core-observe-multicast-notifications-04.txt
internet-drafts@ietf.org Mon, 11 July 2022 13:15 UTC
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Subject: I-D Action: draft-ietf-core-observe-multicast-notifications-04.txt
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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-04.txt Pages : 84 Date : 2022-07-11 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-04.html A diff from the previous version is available at: https://www.ietf.org/rfcdiff?url2=draft-ietf-core-observe-multicast-notifications-04 Internet-Drafts are also available by rsync at rsync.ietf.org::internet-drafts
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