Registration Data Access Protocol (RDAP) Query Parameters for Result Sorting and Paging
draft-ietf-regext-rdap-sorting-and-paging-04

Document Type Active Internet-Draft (regext WG)
Last updated 2019-08-02
Replaces draft-loffredo-regext-rdap-sorting-and-paging
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Registration Protocols Extensions                            M. Loffredo
Internet-Draft                                             M. Martinelli
Intended status: Standards Track                     IIT-CNR/Registro.it
Expires: February 2, 2020                                  S. Hollenbeck
                                                           Verisign Labs
                                                          August 1, 2019

  Registration Data Access Protocol (RDAP) Query Parameters for Result
                           Sorting and Paging
              draft-ietf-regext-rdap-sorting-and-paging-04

Abstract

   The Registration Data Access Protocol (RDAP) does not include core
   functionality for clients to provide sorting and paging parameters
   for control of large result sets.  This omission can lead to
   unpredictable server processing of queries and client processing of
   responses.  This unpredictability can be greatly reduced if clients
   can provide servers with their preferences for managing large
   responses.  This document describes RDAP query extensions that allow
   clients to specify their preferences for sorting and paging result
   sets.

Status of This Memo

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   This Internet-Draft will expire on February 2, 2020.

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

Loffredo, et al.        Expires February 2, 2020                [Page 1]
Internet-Draft           RDAP Sorting and Paging             August 2019

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   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Conventions Used in This Document . . . . . . . . . . . .   4
   2.  RDAP Query Parameter Specification  . . . . . . . . . . . . .   4
     2.1.  Sorting and Paging Metadata . . . . . . . . . . . . . . .   4
     2.2.  "count" Parameter . . . . . . . . . . . . . . . . . . . .   6
     2.3.  "sort" Parameter  . . . . . . . . . . . . . . . . . . . .   7
       2.3.1.  Sorting Properties Declaration  . . . . . . . . . . .   7
       2.3.2.  Representing Sorting Links  . . . . . . . . . . . . .  11
     2.4.  "cursor" Parameter  . . . . . . . . . . . . . . . . . . .  12
       2.4.1.  Representing Paging Links . . . . . . . . . . . . . .  15
   3.  Negative Answers  . . . . . . . . . . . . . . . . . . . . . .  16
   4.  RDAP Conformance  . . . . . . . . . . . . . . . . . . . . . .  17
   5.  Implementation Considerations . . . . . . . . . . . . . . . .  17
   6.  Implementation Status . . . . . . . . . . . . . . . . . . . .  17
     6.1.  IIT-CNR/Registro.it . . . . . . . . . . . . . . . . . . .  18
     6.2.  Google Registry . . . . . . . . . . . . . . . . . . . . .  18
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   8.  Security Considerations . . . . . . . . . . . . . . . . . . .  19
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  19
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     10.2.  Informative References . . . . . . . . . . . . . . . . .  21
   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  22
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  22

1.  Introduction

   The availability of functionality for result sorting and paging
   provides benefits to both clients and servers in the implementation
   of RESTful services [REST].  These benefits include:

   o  reducing the server response bandwidth requirements;
   o  improving server response time;
   o  improving query precision and, consequently, obtaining more
      reliable results;
   o  decreasing server query processing load;
   o  reducing client response processing time.
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