[core] Fwd: New Version Notification for draft-tiloca-core-observe-multicast-notifications-00.txt
Marco Tiloca <marco.tiloca@ri.se> Tue, 09 July 2019 08:29 UTC
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From: Marco Tiloca <marco.tiloca@ri.se>
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Subject: [core] Fwd: New Version Notification for draft-tiloca-core-observe-multicast-notifications-00.txt
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Hello CoRE, We have recently submitted a new draft "Observe Notifications as CoAP Multicast Responses" https://tools.ietf.org/html/draft-tiloca-core-observe-multicast-notifications The document describes how a CoAP server can send Observe notifications over multicast, by synchronizing the observers of a target resource to a same shared Token value. Also, it describes how Group OSCORE can be used to protect such notifications sent over multicast. This is especially relevant for, but not limited to, the "Pub-Sub and Multicast" use case, that was elaborated at the Hallway Discussion we had at IETF 104. In particular, "Proposal 4" in Slide 13 of [1] considers multicast notifications as CoAP Responses, used by the Broker for distributing topic updates to the Subscribers. Other than improving communication performance, this would also allow Subscribers to be only clients, unlike in the alternative discussed proposals. This new draft enables the proposal above, together with end-to-end security of multicast notifications from the Broker to the Subscribers. Comments are very welcome! Best, /Marco [1] https://github.com/EricssonResearch/coap-pubsub-profile/blob/master/Pubsub-multicast.pdf -------- Forwarded Message -------- Subject: New Version Notification for draft-tiloca-core-observe-multicast-notifications-00.txt Date: Sat, 6 Jul 2019 02:33:00 -0700 From: internet-drafts@ietf.org To: Christian Amsuess <christian@amsuess.com>, Marco Tiloca <marco.tiloca@ri.se>, Rikard Hoeglund <rikard.hoglund@ri.se>, Francesca Palombini <francesca.palombini@ericsson.com> A new version of I-D, draft-tiloca-core-observe-multicast-notifications-00.txt has been successfully submitted by Marco Tiloca and posted to the IETF repository. Name: draft-tiloca-core-observe-multicast-notifications Revision: 00 Title: Observe Notifications as CoAP Multicast Responses Document date: 2019-07-06 Group: Individual Submission Pages: 18 URL: https://www.ietf.org/internet-drafts/draft-tiloca-core-observe-multicast-notifications-00.txt Status: https://datatracker.ietf.org/doc/draft-tiloca-core-observe-multicast-notifications/ Htmlized: https://tools.ietf.org/html/draft-tiloca-core-observe-multicast-notifications-00 Htmlized: https://datatracker.ietf.org/doc/html/draft-tiloca-core-observe-multicast-notifications 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 to all the clients observing a same target resource. This document defines how a CoAP server sends observe notifications as response messages over multicast, by 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 from the CoAP server to the multiple CoAP clients registered as observers. Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. The IETF Secretariat
- [core] Fwd: New Version Notification for draft-ti… Marco Tiloca