Support for Series in iCalendar
draft-ietf-calext-icalendar-series-02

Document Type Active Internet-Draft (calext WG)
Author Michael Douglass 
Last updated 2020-10-14
Replaces draft-douglass-icalendar-series
Stream IETF
Intended RFC status Proposed Standard
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Stream WG state WG Document (wg milestone: Dec 2020 - Submit calendar seri... )
On Agenda calext at IETF-110
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Network Working Group                                        M. Douglass
Internet-Draft                                           14 October 2020
Intended status: Standards Track                                        
Expires: 17 April 2021

                    Support for Series in iCalendar
                 draft-ietf-calext-icalendar-series-02

Abstract

   This document updates [RFC5545] by defining a new repeating set of
   events known as a series.  This differs from recurrences in that each
   instance is a separate entity with a parent relationship to a
   specified template entity.

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
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   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 17 April 2021.

Copyright Notice

   Copyright (c) 2020 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.

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Table of Contents

   1.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Terms and definitions . . . . . . . . . . . . . . . . . . . .   3
   4.  Overrides and iCalendar recurrences . . . . . . . . . . . . .   3
     4.1.  Changing the master start or the recurrence rules . . . .   3
     4.2.  Splitting recurrences . . . . . . . . . . . . . . . . . .   4
   5.  Series  . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Modifying series patterns and splitting . . . . . . . . .   5
     5.2.  The series master . . . . . . . . . . . . . . . . . . . .   6
     5.3.  The series instances  . . . . . . . . . . . . . . . . . .   6
   6.  Redefined Relation Type Value . . . . . . . . . . . . . . . .   6
   7.  New Property Parameters . . . . . . . . . . . . . . . . . . .   9
     7.1.  Split . . . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.2.  Lookahead count . . . . . . . . . . . . . . . . . . . . .  10
     7.3.  Lookahead period  . . . . . . . . . . . . . . . . . . . .  10
   8.  New Properties  . . . . . . . . . . . . . . . . . . . . . . .  11
     8.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .  11
     8.2.  Generating Series members . . . . . . . . . . . . . . . .  11
     8.3.  Series UID  . . . . . . . . . . . . . . . . . . . . . . .  13
     8.4.  Series-exception-date . . . . . . . . . . . . . . . . . .  13
     8.5.  Series-date . . . . . . . . . . . . . . . . . . . . . . .  15
     8.6.  Series-id . . . . . . . . . . . . . . . . . . . . . . . .  16
     8.7.  Last series ID  . . . . . . . . . . . . . . . . . . . . .  18
     8.8.  Series Rule . . . . . . . . . . . . . . . . . . . . . . .  21
   9.  Redefined RELATED-TO Property . . . . . . . . . . . . . . . .  22
     9.1.  RELATED-TO  . . . . . . . . . . . . . . . . . . . . . . .  22
   10. Backwards compatibility . . . . . . . . . . . . . . . . . . .  24
   11. CalDAV extensions . . . . . . . . . . . . . . . . . . . . . .  25
   12. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  25
     12.1.  iCalendar Property Registrations . . . . . . . . . . . .  25
     12.2.  iCalendar Property Parameter Registrations . . . . . . .  26
     12.3.  iCalendar RELTYPE Value Registrations  . . . . . . . . .  26
   13. Normative references  . . . . . . . . . . . . . . . . . . . .  26
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  26

1.  Acknowledgements

   The authors would like to thank the members of the Calendaring and
   Scheduling Consortium (CalConnect) for contributing their ideas and
   support.

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