Dynamic Resource Linking for Constrained RESTful Environments
draft-ietf-core-dynlink-08

Document Type Active Internet-Draft (core WG)
Last updated 2019-03-07
Replaces draft-groves-core-dynlink
Stream IETF
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
CoRE Working Group                                             Z. Shelby
Internet-Draft                                                       ARM
Intended status: Informational                                 M. Koster
Expires: September 9, 2019                                   SmartThings
                                                               C. Groves

                                                                  J. Zhu
                                                                  Huawei
                                                      B. Silverajan, Ed.
                                                      Tampere University
                                                          March 08, 2019

     Dynamic Resource Linking for Constrained RESTful Environments
                       draft-ietf-core-dynlink-08

Abstract

   This specification defines Link Bindings, which provide dynamic
   linking of state updates between resources, either on an endpoint or
   between endpoints, for systems using CoAP (RFC7252).  This
   specification also defines Conditional Notification Attributes that
   work with Link Bindings or with CoAP Observe (RFC7641).

Editor note

   The git repository for the draft is found at https://github.com/core-
   wg/dynlink

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 September 9, 2019.

Shelby, et al.          Expires September 9, 2019               [Page 1]
Internet-Draft      Dynamic Resource Linking for CoRE         March 2019

Copyright Notice

   Copyright (c) 2019 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
   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.  Conditional Notification Attributes . . . . . . . . . . . . .   4
     3.1.  Attribute Definitions . . . . . . . . . . . . . . . . . .   4
       3.1.1.  Minimum Period (pmin) . . . . . . . . . . . . . . . .   5
       3.1.2.  Maximum Period (pmax) . . . . . . . . . . . . . . . .   5
       3.1.3.  Change Step (st)  . . . . . . . . . . . . . . . . . .   5
       3.1.4.  Greater Than (gt) . . . . . . . . . . . . . . . . . .   6
       3.1.5.  Less Than (lt)  . . . . . . . . . . . . . . . . . . .   6
       3.1.6.  Notification Band (band)  . . . . . . . . . . . . . .   7
     3.2.  Server processing of Conditional Notification Attributes    8
   4.  Link Bindings . . . . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  The "bind" attribute and Binding Methods  . . . . . . . .   9
       4.1.1.  Polling . . . . . . . . . . . . . . . . . . . . . . .  10
       4.1.2.  Observe . . . . . . . . . . . . . . . . . . . . . . .  10
       4.1.3.  Push  . . . . . . . . . . . . . . . . . . . . . . . .  11
     4.2.  Link Relation . . . . . . . . . . . . . . . . . . . . . .  11
   5.  Binding Table . . . . . . . . . . . . . . . . . . . . . . . .  11
   6.  Implementation Considerations . . . . . . . . . . . . . . . .  12
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
     8.1.  Resource Type value 'core.bnd'  . . . . . . . . . . . . .  13
     8.2.  Link Relation Type  . . . . . . . . . . . . . . . . . . .  13
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  14
   11. Changelog . . . . . . . . . . . . . . . . . . . . . . . . . .  14
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  16
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  16
     12.2.  Informative References . . . . . . . . . . . . . . . . .  17
Show full document text