New Properties for iCalendar
RFC 7986

• Status
• IESG evaluation record
• IESG writeups
• Email expansions
• History

• Versions
• 00
• 01
• 02
• 03
• 04
• 05

Internet Engineering Task Force (IETF)                          C. Daboo
Request for Comments: 7986                                    Apple Inc.
Updates: 5545                                               October 2016
Category: Standards Track
ISSN: 2070-1721

                      New Properties for iCalendar

Abstract

   This document defines a set of new properties for iCalendar data and
   extends the use of some existing properties to the entire iCalendar
   object.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7986.

Copyright Notice

   Copyright (c) 2016 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
   (http://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.

Daboo                        Standards Track                    [Page 1]
RFC 7986              iCalendar Property Extensions         October 2016

Table of Contents

   1. Introduction ....................................................3
   2. Conventions Used in This Document ...............................3
   3. Backwards-Compatible Extension Properties .......................3
   4. Modifications to Calendar Components ............................4
   5. Properties ......................................................5
      5.1. NAME Property ..............................................5
      5.2. DESCRIPTION Property .......................................6
      5.3. UID Property ...............................................7
      5.4. LAST-MODIFIED Property .....................................8
      5.5. URL Property ...............................................8
      5.6. CATEGORIES Property ........................................8
      5.7. REFRESH-INTERVAL Property ..................................9
      5.8. SOURCE Property ...........................................10
      5.9. COLOR Property ............................................10
      5.10. IMAGE Property ...........................................11
      5.11. CONFERENCE Property ......................................13
   6. Property Parameters ............................................14
      6.1. DISPLAY Property Parameter ................................14
      6.2. EMAIL Property Parameter ..................................15
      6.3. FEATURE Property Parameter ................................16
      6.4. LABEL Property Parameter ..................................17
   7. Security Considerations ........................................18
   8. Privacy Considerations .........................................18
   9. IANA Considerations ............................................19
      9.1. Property Registrations ....................................19
      9.2. Parameter Registrations ...................................20
      9.3. Property Parameter Value Registries .......................20
   10. References ....................................................21
      10.1. Normative References .....................................21
      10.2. Informative References ...................................22
   Acknowledgments ...................................................23
   Author's Address ..................................................23

Daboo                        Standards Track                    [Page 2]
RFC 7986              iCalendar Property Extensions         October 2016

1.  Introduction

   The iCalendar [RFC5545] data format is used to represent calendar
   data and is used with the iCalendar Transport-Independent
   Interoperability Protocol (iTIP) [RFC5546] to handle scheduling
   operations between calendar users. iCalendar is in widespread use,
   and in accordance with provisions in that specification, extension
   elements have been added by various vendors to the data format in
   order to support and enhance capabilities.  This specification
   collects a number of these ad hoc extensions and uses the new IANA