Calendaring Extensions to WebDAV (CalDAV): Managed Attachments
RFC 8607

Document Type RFC - Informational (June 2019; No errata)
Last updated 2019-06-13
Stream IETF
Formats plain text pdf html bibtex
Reviews
Stream WG state Submitted to IESG for Publication
Document shepherd Bron Gondwana
Shepherd write-up Show (last changed 2017-08-14)
IESG IESG state RFC 8607 (Informational)
Consensus Boilerplate Yes
Telechat date
Responsible AD Alexey Melnikov
Send notices to Bron Gondwana <brong@fastmailteam.com>
IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                          C. Daboo
Request for Comments: 8607                                         Apple
Category: Informational                                      A. Quillaud
ISSN: 2070-1721                                                   Oracle
                                                       K. Murchison, Ed.
                                                                FastMail
                                                               June 2019

     Calendaring Extensions to WebDAV (CalDAV): Managed Attachments

Abstract

   This specification adds an extension to the Calendaring Extensions to
   WebDAV (CalDAV) to allow attachments associated with iCalendar data
   to be stored and managed on the server.

   This specification documents existing code deployed by multiple
   vendors.  It is published as an Informational specification rather
   than Standards Track due to its noncompliance with multiple best
   current practices of HTTP.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   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).  Not all documents
   approved by the IESG are candidates for any level of Internet
   Standard; see 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
   https://www.rfc-editor.org/info/rfc8607.

Daboo, et al.                 Informational                     [Page 1]
RFC 8607               CalDAV-Managed Attachments              June 2019

Copyright Notice

   Copyright (c) 2019 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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Rationale for Informational Status  . . . . . . . . . . .   4
   2.  Conventions Used in This Document . . . . . . . . . . . . . .   4
   3.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     3.1.  Requirements  . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Discovering Support for Managed Attachments . . . . . . .   5
     3.3.  POST Request for Managing Attachments . . . . . . . . . .   6
       3.3.1.  action Query Parameter  . . . . . . . . . . . . . . .   6
       3.3.2.  rid Query Parameter . . . . . . . . . . . . . . . . .   6
       3.3.3.  managed-id Query Parameter  . . . . . . . . . . . . .   7
     3.4.  Adding Attachments  . . . . . . . . . . . . . . . . . . .   7
     3.5.  Updating Attachments  . . . . . . . . . . . . . . . . . .  10
     3.6.  Removing Attachments via POST . . . . . . . . . . . . . .  13
     3.7.  Adding Existing Managed Attachments via PUT . . . . . . .  15
     3.8.  Updating Attachments via PUT  . . . . . . . . . . . . . .  15
     3.9.  Removing Attachments via PUT  . . . . . . . . . . . . . .  15
     3.10. Retrieving Attachments  . . . . . . . . . . . . . . . . .  15
     3.11. Error Handling  . . . . . . . . . . . . . . . . . . . . .  16
     3.12. Additional Considerations . . . . . . . . . . . . . . . .  17
       3.12.1.  Quotas . . . . . . . . . . . . . . . . . . . . . . .  17
       3.12.2.  Access Control . . . . . . . . . . . . . . . . . . .  17
       3.12.3.  Redirects  . . . . . . . . . . . . . . . . . . . . .  18
       3.12.4.  Processing Time  . . . . . . . . . . . . . . . . . .  18
       3.12.5.  Automatic Cleanup by Servers . . . . . . . . . . . .  18
       3.12.6.  Sending Scheduling Messages with Attachments . . . .  18
       3.12.7.  Migrating Calendar Data  . . . . . . . . . . . . . .  18
   4.  Modifications to iCalendar Syntax . . . . . . . . . . . . . .  19
     4.1.  SIZE Property Parameter . . . . . . . . . . . . . . . . .  19
     4.2.  FILENAME Property Parameter . . . . . . . . . . . . . . .  19
     4.3.  MANAGED-ID Property Parameter . . . . . . . . . . . . . .  20
   5.  Additional Message Header Fields  . . . . . . . . . . . . . .  20

Daboo, et al.                 Informational                     [Page 2]
RFC 8607               CalDAV-Managed Attachments              June 2019
Show full document text