iCalendar Message-Based Interoperability Protocol (iMIP)
RFC 2447

Document Type RFC - Proposed Standard (November 1998; No errata)
Obsoleted by RFC 6047
Last updated 2013-03-02
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Network Working Group                                         F. Dawson
Request for Comments: 2447                                        Lotus
Category: Standards Track                                    S. Mansour
                                                               Netscape
                                                          S. Silverberg
                                                              Microsoft
                                                          November 1998

           iCalendar Message-Based Interoperability Protocol
                                 (iMIP)

Status of this Memo

   This document specifies an Internet standards track protocol for the
   Internet community, and requests discussion and suggestions for
   improvements.  Please refer to the current edition of the "Internet
   Official Protocol Standards" (STD 1) for the standardization state
   and status of this protocol.  Distribution of this memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (1998).  All Rights Reserved.

Abstract

   This document, [iMIP], specifies a binding from the iCalendar
   Transport-independent Interoperability Protocol (iTIP) to Internet
   email-based transports. Calendaring entries defined by the iCalendar
   Object Model [iCAL] are composed using constructs from [RFC-822],
   [RFC-2045], [RFC-2046], [RFC-2047], [RFC-2048] and [RFC-2049].

   This document is based on discussions within the Internet Engineering
   Task Force (IETF) Calendaring and Scheduling (CALSCH) working group.
   More information about the IETF CALSCH working group activities can
   be found on the IMC web site at http://www.imc.org, the IETF web site
   at http://www.ietf.org/html.charters/calsch-charter.html. Refer to
   the references within this document for further information on how to
   access these various documents.

Dawson, et. al.             Standards Track                     [Page 1]
RFC 2447                          iMIP                     November 1998

Table of Contents

 1 INTRODUCTION........................................................2
  1.1 RELATED MEMOS ...................................................2
  1.2 FORMATTING CONVENTIONS ..........................................3
  1.3 TERMINOLOGY .....................................................4
 2 MIME MESSAGE FORMAT BINDING.........................................4
  2.1 MIME MEDIA TYPE .................................................4
  2.2 SECURITY ........................................................4
    2.2.1 Authorization ...............................................4
    2.2.2 Authentication ..............................................5
    2.2.3 Confidentiality .............................................5
  2.3 [RFC-822] ADDRESSES .............................................5
  2.4 CONTENT TYPE ....................................................5
  2.5 CONTENT-TRANSFER-ENCODING .......................................6
  2.6 CONTENT-DISPOSITION .............................................6
 3 SECURITY CONSIDERATIONS.............................................7
 4 EXAMPLES............................................................8
  4.1 SINGLE COMPONENT WITH AN ATTACH PROPERTY ........................8
  4.2 USING MULTIPART ALTERNATIVE FOR LOW FIDELITY CLIENTS ............8
  4.3 SINGLE COMPONENT WITH AN ATTACH PROPERTY AND INLINE ATTACHMENT ..9
  4.4 MULTIPLE SIMILAR COMPONENTS ....................................10
  4.5 MULTIPLE MIXED COMPONENTS ......................................11
  4.6 DETAILED COMPONENTS WITH AN ATTACH PROPERTY ....................13
 5 RECOMMENDED PRACTICES..............................................14
  5.1 USE OF CONTENT AND MESSAGE IDS .................................14
 6 BIBLIOGRAPHY.......................................................15
 7 AUTHORS' ADDRESSES.................................................16
 8 FULL COPYRIGHT STATEMENT...........................................18

1 Introduction

   This binding document provides the transport specific information
   necessary convey iCalendar Transport-independent Interoperability
   Protocol (iTIP) over MIME as defined in [RFC-822] and [RFC-2045].

1.1 Related Memos

   Implementers will need to be familiar with several other memos that,
   along with this memo, form a framework for Internet calendaring and
   scheduling standards.

   This document, [iMIP], specifies an Internet email binding for iTIP.

   [iCAL] - specifies a core specification of objects, data types,
   properties and property parameters;

Dawson, et. al.             Standards Track                     [Page 2]
RFC 2447                          iMIP                     November 1998

   [iTIP] - specifies an interoperability protocol for scheduling
   between different implementations;

   This memo does not attempt to repeat the specification of concepts or
   definitions from these other memos. Where possible, references are
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