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Observing Resources in the Constrained Application Protocol (CoAP) (RFC7641) Disclosure Number: IPCOM000244970D
Original Publication Date: 2015-Sep-01
Included in the Prior Art Database: 2016-Feb-04
Document File: 60 page(s) / 66K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

K. Hartke: AUTHOR


1.1. Background

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Internet Engineering Task Force (IETF)                         K. Hartke Request for Comments: 7641                       Universitaet Bremen TZI Category: Standards Track                                 September 2015 ISSN: 2070-1721

    Observing Resources in the Constrained Application Protocol (CoAP)


   The Constrained Application Protocol (CoAP) is a RESTful application    protocol for constrained nodes and networks.  The state of a resource    on a CoAP server can change over time.  This document specifies a    simple protocol extension for CoAP that enables CoAP clients to    "observe" resources, i.e., to retrieve a representation of a resource    and keep this representation updated by the server over a period of    time.  The protocol follows a best-effort approach for sending new    representations to clients and provides eventual consistency between    the state observed by each client and the actual resource state at    the server.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved for publication by the    Internet Engineering Steering Group (IESG).  Further information on    Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Hartke                       Standards Track                    [Page 1]
 RFC 7641               Observing Resources in CoAP        September 2015

 Copyright Notice

   Copyright (c) 2015 IETF Trust and the persons identified as the    document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal    Provisions Relating to IETF Documents    ( in effect on the date of    publication of this document.  Please review these documents    carefully, as they describe your rights and restrictions with respect    to this document.  Code Components extracted from this document must    include Simplified BSD License text as described in Section 4.e of    the Trust Legal Provisions and are provided without warranty as    described in the Simplified BSD License.

Hartke                       Standards Track                    [Page 2]
 RFC 7641               Observing Resources in CoAP        September 2015

 Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .  4

     1.1.  Background  . . . . . . . . . . . . . . . . . ....