The Time Zone Data Distribution Service (TZDIST) Geolocate Extension
draft-murchison-tzdist-geolocate-03

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Last updated 2018-11-09
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Independent Submission                                      K. Murchison
Internet-Draft                                                  FastMail
Intended status: Standards Track                        November 9, 2018
Expires: May 13, 2019

  The Time Zone Data Distribution Service (TZDIST) Geolocate Extension
                  draft-murchison-tzdist-geolocate-03

Abstract

   This document defines an extension to the Time Zone Data Distribution
   Service (RFC 7808) to allow a mobile device to retrieve the time
   zones associated with a geographic location as specified by a 'geo'
   URI (RFC 5870).

Open Issues

   o  Determine which, if any, GEOPRIV requirements we need to follow
      and how they impact Security/Privacy considerations.

   o  Need a new field(s) in the response to indicate which time zone(s)
      contain the point location vs those which are nearby (intersect
      the radius of uncertainty).

Status of This Memo

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

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   This Internet-Draft will expire on May 13, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   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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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   2
   3.  "geolocate" Action  . . . . . . . . . . . . . . . . . . . . .   3
     3.1.  Examples: geolocate
           action  . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   5.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   7
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
     6.1.  Service Action Registration . . . . . . . . . . . . . . .   7
     6.2.  Registration of invalid-location Error URN  . . . . . . .   7
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .   7
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     8.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Appendix A.  Change History (To be removed by RFC Editor before
                publication) . . . . . . . . . . . . . . . . . . . .   8
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   Updating time zone data with Time Zone Data Distribution (TZDIST)
   requires prior knowledge of the time zone identifier.  Such prior
   knowledge may be inconvenient for mobile devices that may pass
   through multiple time zones as their geographic location changes.
   This specification defines a new TZDIST service action to allow a
   client on a mobile device to retrieve the time zone identifiers
   associated with its current location, as specified by a 'geo' URI
   [RFC5870].

   This specification does not define the source of the time zone
   boundary data.  It is assumed that a reliable and accurate source is
   available.  One such source is the Time Zone Boundary Builder [TZBB].

2.  Conventions Used in This Document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   [RFC2119].

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   This specification contains examples of HTTP requests and responses.
   In some cases, additional line breaks have been introduced into the
   request or response data to match maximum line-length limits of this
   document.

3.  "geolocate" Action

   Name:  geolocate

   Request-URI Template:
      {/service-prefix,data-prefix}/zones{?location}

   Description:  This action allows a client to query the time zone data
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