CoRE Resource Directory
draft-shelby-core-resource-directory-03

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Document Type Active Internet-Draft (individual)
Authors Zach Shelby  , Srdjan Krco 
Last updated 2012-05-17
Replaced by draft-ietf-core-resource-directory
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CoRE                                                           Z. Shelby
Internet-Draft                                                 Sensinode
Intended status: Standards Track                                 S. Krco
Expires: November 18, 2012                                      Ericsson
                                                            May 17, 2012

                        CoRE Resource Directory
                draft-shelby-core-resource-directory-03

Abstract

   In many M2M applications, direct discovery of resources is not
   practical due to sleeping nodes, disperse networks, or networks where
   multicast traffic is inefficient.  These problems can be solved by
   employing an entity called a Resource Directory (RD), which hosts
   descriptions of resources held on other servers, allowing lookups to
   be performed for those resources.  This document specifies the web
   interfaces that a Resource Directory supports in order for web
   servers to discover the RD and to register, maintain, lookup and
   remove resources descriptions.  Furthermore, new link attributes
   useful in conjunction with an RD are defined.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on November 18, 2012.

Copyright Notice

   Copyright (c) 2012 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
   (http://trustee.ietf.org/license-info) in effect on the date of

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   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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   3.  Architecture and Use Cases . . . . . . . . . . . . . . . . . .  4
     3.1.  Use Case: Cellular M2M . . . . . . . . . . . . . . . . . .  5
     3.2.  Use Case: Home and Building Automation . . . . . . . . . .  6
   4.  Resource Directory Function Set  . . . . . . . . . . . . . . .  6
     4.1.  Discovery  . . . . . . . . . . . . . . . . . . . . . . . .  6
     4.2.  Registration . . . . . . . . . . . . . . . . . . . . . . .  8
     4.3.  Update . . . . . . . . . . . . . . . . . . . . . . . . . . 10
     4.4.  Validation . . . . . . . . . . . . . . . . . . . . . . . . 12
     4.5.  Removal  . . . . . . . . . . . . . . . . . . . . . . . . . 13
   5.  RD Lookup Function Set . . . . . . . . . . . . . . . . . . . . 14
   6.  New Link-Format Attributes . . . . . . . . . . . . . . . . . . 16
     6.1.  Export 'exp' attribute . . . . . . . . . . . . . . . . . . 16
   7.  Security Considerations  . . . . . . . . . . . . . . . . . . . 17
   8.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 17
   9.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 17
   10. Changelog  . . . . . . . . . . . . . . . . . . . . . . . . . . 17
   11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 18
     11.1. Normative References . . . . . . . . . . . . . . . . . . . 18
     11.2. Informative References . . . . . . . . . . . . . . . . . . 19
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 19

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1.  Introduction

   The Constrained RESTful Environments (CoRE) working group aims at
   realizing the REST architecture in a suitable form for the most
   constrained nodes (e.g. 8-bit microcontrollers with limited RAM and
   ROM) and networks (e.g. 6LoWPAN).  CoRE is aimed at machine-to-
   machine (M2M) applications such as smart energy and building
   automation.

   The discovery of resources offered by a constrained server is very
   important in machine-to-machine applications where there are no
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