Dynamic Resource Linking for Constrained RESTful Environments
draft-ietf-core-dynlink-04

Document Type Active Internet-Draft (core WG)
Last updated 2017-09-15
Replaces draft-groves-core-dynlink
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CoRE Working Group                                             Z. Shelby
Internet-Draft                                                       ARM
Intended status: Informational                                   Z. Vial
Expires: March 18, 2018                               Schneider-Electric
                                                               M. Koster
                                                             SmartThings
                                                               C. Groves
                                                                  J. Zhu
                                                                  Huawei
                                                      B. Silverajan, Ed.
                                        Tampere University of Technology
                                                      September 14, 2017

     Dynamic Resource Linking for Constrained RESTful Environments
                       draft-ietf-core-dynlink-04

Abstract

   For CoAP [RFC7252] Dynamic linking of state updates between
   resources, either on an endpoint or between endpoints, is defined
   with the concept of Link Bindings.  This specification defines
   conditional observation attributes that work with Link Bindings or
   with CoAP Observe [RFC7641].

   Editor's note:

   o 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
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   This Internet-Draft will expire on March 18, 2018.

Shelby, et al.           Expires March 18, 2018                 [Page 1]
Internet-Draft      Dynamic Resource Linking for CoRE     September 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Link Bindings . . . . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Binding Methods . . . . . . . . . . . . . . . . . . . . .   4
       3.1.1.  Polling . . . . . . . . . . . . . . . . . . . . . . .   5
       3.1.2.  Observe . . . . . . . . . . . . . . . . . . . . . . .   5
       3.1.3.  Push  . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Link Relation . . . . . . . . . . . . . . . . . . . . . .   6
     3.3.  Binding Attributes  . . . . . . . . . . . . . . . . . . .   6
       3.3.1.  Bind Method (bind)  . . . . . . . . . . . . . . . . .   6
       3.3.2.  Minimum Period (pmin) . . . . . . . . . . . . . . . .   6
       3.3.3.  Maximum Period (pmax) . . . . . . . . . . . . . . . .   7
       3.3.4.  Change Step (st)  . . . . . . . . . . . . . . . . . .   7
       3.3.5.  Greater Than (gt) . . . . . . . . . . . . . . . . . .   7
       3.3.6.  Less Than (lt)  . . . . . . . . . . . . . . . . . . .   7
       3.3.7.  Attribute Interactions  . . . . . . . . . . . . . . .   8
   4.  Binding Table . . . . . . . . . . . . . . . . . . . . . . . .   8
     4.1.  Binding Interface Description . . . . . . . . . . . . . .   8
     4.2.  Resource Observation Attributes . . . . . . . . . . . . .   9
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     6.1.  Interface Description . . . . . . . . . . . . . . . . . .  11
     6.2.  Link Relation Type  . . . . . . . . . . . . . . . . . . .  11
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  11
   8.  Changelog . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
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