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Timezone Service Protocol
draft-douglass-timezone-service-11

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Last updated: 2014-03-15
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Network Working Group                                        M. Douglass
Internet-Draft                                                       RPI
Intended status: Standards Track                                C. Daboo
Expires: September 16, 2014                                        Apple
                                                          March 15, 2014

                       Timezone Service Protocol
                   draft-douglass-timezone-service-11

Abstract

   This document defines a timezone service protocol that allows
   reliable, secure and fast delivery of timezone data to client systems
   such as calendaring and scheduling applications or operating systems.

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 September 16, 2014.

Copyright Notice

   Copyright (c) 2014 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
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   described in the Simplified BSD License.

Douglass & Daboo       Expires September 16, 2014               [Page 1]
Internet-Draft          Timezone Service Protocol             March 2014

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4
     1.1.  Conventions  . . . . . . . . . . . . . . . . . . . . . . .  4
     1.2.  Glossary of terms  . . . . . . . . . . . . . . . . . . . .  4
   2.  Architectural Overview . . . . . . . . . . . . . . . . . . . .  5
   3.  General Considerations . . . . . . . . . . . . . . . . . . . .  6
     3.1.  Timezone Identifiers . . . . . . . . . . . . . . . . . . .  6
     3.2.  Timezone Aliases . . . . . . . . . . . . . . . . . . . . .  7
     3.3.  Timezone Localized Names . . . . . . . . . . . . . . . . .  7
     3.4.  Truncated Timezones  . . . . . . . . . . . . . . . . . . .  7
   4.  Timezones Service Protocol . . . . . . . . . . . . . . . . . .  8
     4.1.  Server Protocol  . . . . . . . . . . . . . . . . . . . . .  8
       4.1.1.  Timezone Queries . . . . . . . . . . . . . . . . . . .  8
       4.1.2.  Timezone Formats . . . . . . . . . . . . . . . . . . .  9
       4.1.3.  Conditional Timezone Requests  . . . . . . . . . . . .  9
       4.1.4.  Expanded Timezone Data . . . . . . . . . . . . . . . .  9
       4.1.5.  Server Requirements  . . . . . . . . . . . . . . . . . 10
       4.1.6.  Error Responses  . . . . . . . . . . . . . . . . . . . 10
       4.1.7.  Extensions . . . . . . . . . . . . . . . . . . . . . . 10
     4.2.  Client Guidelines  . . . . . . . . . . . . . . . . . . . . 10
       4.2.1.  Discovery  . . . . . . . . . . . . . . . . . . . . . . 10
         4.2.1.1.  Timezone Service SRV Service Labels  . . . . . . . 11
         4.2.1.2.  Timezone Service TXT records . . . . . . . . . . . 11
         4.2.1.3.  Timezone Service Well-Known URI  . . . . . . . . . 12
           4.2.1.3.1.  Example: well-known URI redirects to
                       actual context path  . . . . . . . . . . . . . 12
       4.2.2.  Initial Synchronization of All Timezones . . . . . . . 12
       4.2.3.  Subsequent Synchronization of All Timezones  . . . . . 13
   5.  Request Parameters . . . . . . . . . . . . . . . . . . . . . . 13
     5.1.  "action" Parameter . . . . . . . . . . . . . . . . . . . . 13
     5.2.  "format" Parameter . . . . . . . . . . . . . . . . . . . . 13
     5.3.  "changedsince" Parameter . . . . . . . . . . . . . . . . . 14
     5.4.  "start" Parameter  . . . . . . . . . . . . . . . . . . . . 14
     5.5.  "end" Parameter  . . . . . . . . . . . . . . . . . . . . . 14
     5.6.  "lang" Parameter . . . . . . . . . . . . . . . . . . . . . 14
     5.7.  "tzid" Parameter . . . . . . . . . . . . . . . . . . . . . 15

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