Subject: [core] Fwd: New Version Notification for draft-tiloca-core-observe-multicast-notifications-03.txt

From: Marco Tiloca <[email-masked]>
Date: Tue, 14 Jul 2020 12:55:31 +0200

Hello CoRE,

We have submitted an update for the draft "Observe Notifications as CoAP
Multicast Responses".

https://tools.ietf.org/html/draft-tiloca-core-observe-multicast-notifications-03

The document describes how a CoAP server can send Observe notifications
over multicast, and how Group OSCORE can be used to protect such
notifications. The proposed approach is especially relevant for, but not
limited to, the "Pub-Sub and Multicast" use case elaborated during the
Hallway Discussion at IETF 104.

This update especially includes:

1) improved encoding of the informative response transporting the
phantom request and the resource representation;

2) improved mechanisms for the rough counting of active clients, with
pseudo-code provided as an appendix.

Comments are very welcome!

Best,
/Marco

-------- Forwarded Message --------
Subject: 	New Version Notification for
draft-tiloca-core-observe-multicast-notifications-03.txt
Date: 	Mon, 13 Jul 2020 10:13:15 -0700
From: 	[email-masked]
To: 	Francesca Palombini <[email-masked]>, Christian
Amsuess <[email-masked]>, Marco Tiloca <[email-masked]>,
Rikard Hoeglund <[email-masked]>

A new version of I-D,
draft-tiloca-core-observe-multicast-notifications-03.txt
has been successfully submitted by Marco Tiloca and posted to the
IETF repository.

Name: draft-tiloca-core-observe-multicast-notifications
Revision: 03
Title: Observe Notifications as CoAP Multicast Responses
Document date: 2020-07-13
Group: Individual Submission
Pages: 38
URL:
https://www.ietf.org/internet-drafts/draft-tiloca-core-observe-multicast-notifications-03.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-03
Htmlized:
https://datatracker.ietf.org/doc/html/draft-tiloca-core-observe-multicast-notifications
Diff:
https://www.ietf.org/rfcdiff?url2=draft-tiloca-core-observe-multicast-notifications-03

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 observer clients.

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.

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