CoRE Resource Directory
draft-ietf-core-resource-directory-18

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Document Type Active Internet-Draft (core WG)
Last updated 2018-12-20 (latest revision 2018-10-22)
Replaces draft-shelby-core-resource-directory
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Intended RFC status Proposed Standard
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CoRE                                                           Z. Shelby
Internet-Draft                                                       ARM
Intended status: Standards Track                               M. Koster
Expires: June 23, 2019                                       SmartThings
                                                              C. Bormann
                                                 Universitaet Bremen TZI
                                                         P. van der Stok
                                                              consultant
                                                         C. Amsuess, Ed.
                                                       December 20, 2018

                        CoRE Resource Directory
                 draft-ietf-core-resource-directory-18

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 contains
   information about resources held on other servers, allowing lookups
   to be performed for those resources.  The input to an RD is composed
   of links and the output is composed of links constructed from the
   information stored in the RD.  This document specifies the web
   interfaces that a Resource Directory supports for web servers to
   discover the RD and to register, maintain, lookup and remove
   information on resources.  Furthermore, new target 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 https://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 June 23, 2019.

Shelby, et al.            Expires June 23, 2019                 [Page 1]
Internet-Draft           CoRE Resource Directory           December 2018

Copyright Notice

   Copyright (c) 2018 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   include Simplified BSD License text as described in Section 4.e of
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Architecture and Use Cases  . . . . . . . . . . . . . . . . .   6
     3.1.  Principles  . . . . . . . . . . . . . . . . . . . . . . .   6
     3.2.  Architecture  . . . . . . . . . . . . . . . . . . . . . .   7
     3.3.  RD Content Model  . . . . . . . . . . . . . . . . . . . .   8
     3.4.  Link-local addresses  . . . . . . . . . . . . . . . . . .  12
     3.5.  Use Case: Cellular M2M  . . . . . . . . . . . . . . . . .  12
     3.6.  Use Case: Home and Building Automation  . . . . . . . . .  13
     3.7.  Use Case: Link Catalogues . . . . . . . . . . . . . . . .  13
   4.  Finding a Resource Directory  . . . . . . . . . . . . . . . .  14
     4.1.  Resource Directory Address Option (RDAO)  . . . . . . . .  16
   5.  Resource Directory  . . . . . . . . . . . . . . . . . . . . .  17
     5.1.  Payload Content Formats . . . . . . . . . . . . . . . . .  18
     5.2.  URI Discovery . . . . . . . . . . . . . . . . . . . . . .  18
     5.3.  Registration  . . . . . . . . . . . . . . . . . . . . . .  21
       5.3.1.  Simple Registration . . . . . . . . . . . . . . . . .  25
       5.3.2.  Third-party registration  . . . . . . . . . . . . . .  28
     5.4.  Operations on the Registration Resource . . . . . . . . .  28
       5.4.1.  Registration Update . . . . . . . . . . . . . . . . .  29
       5.4.2.  Registration Removal  . . . . . . . . . . . . . . . .  32
       5.4.3.  Further operations  . . . . . . . . . . . . . . . . .  33
   6.  RD Lookup . . . . . . . . . . . . . . . . . . . . . . . . . .  33
     6.1.  Resource lookup . . . . . . . . . . . . . . . . . . . . .  34
     6.2.  Lookup filtering  . . . . . . . . . . . . . . . . . . . .  34
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