Use of the Prefer Header Field in Web Distributed Authoring and Versioning (WebDAV)
draft-murchison-webdav-prefer-10

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Document Type Active Internet-Draft (individual)
Author Kenneth Murchison 
Last updated 2016-11-16
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Independent Submission                                      K. Murchison
Internet-Draft                                                       CMU
Updates: 3253, 4918, 4791, 5689, 5789,                 November 16, 2016
         5995, 6352, 7231, 7232 7240 (if
         approved)
Intended status: Standards Track
Expires: May 20, 2017

    Use of the Prefer Header Field in Web Distributed Authoring and
                          Versioning (WebDAV)
                    draft-murchison-webdav-prefer-10

Abstract

   This specification defines how the HTTP Prefer header field can be
   used by a WebDAV client to request that certain behaviors be employed
   by a server while constructing a response to a request.

Editorial Note (To be removed by RFC Editor before publication)

   Please send comments to the Web Distributed Authoring and Versioning
   (WebDAV) mailing list at <mailto:w3c-dist-auth@w3.org> [1], which may
   be joined by sending a message with subject "subscribe" to
   <mailto:w3c-dist-auth-request@w3.org> [2].  This mailing list is
   archived at <http://lists.w3.org/Archives/Public/w3c-dist-auth/> [3].

Open Issues

   o  Should the list of updated RFCs (other than RFC 7240) in the title
      page header only contain those whose method responses have been
      altered by this document?  Or should all potentially effected
      methods/protocols be listed?

   o  Should we add any text regarding caching responses in Section 3?

   o  Should we update the HTTP Status Code Registry to add a reference
      to Section 3.2 for 412 (Precondition Failed)?

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

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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 May 20, 2017.

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.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Notational Conventions  . . . . . . . . . . . . . . . . .   3
   2.  Reducing WebDAV Response Verbosity with
       "return=minimal"  . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Minimal PROPFIND and REPORT Responses . . . . . . . . . .   4
     2.2.  Minimal PROPPATCH Response  . . . . . . . . . . . . . . .   5
     2.3.  Minimal MKCALENDAR and MKCOL Responses  . . . . . . . . .   5
   3.  Reducing WebDAV Round-Trips with
       "return=representation" . . . . . . . . . . . . . . . . . . .   5
     3.1.  Successful State-Changing Requests  . . . . . . . . . . .   6
     3.2.  Unsuccessful Conditional State-Changing
           Requests  . . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  The "depth-noroot" Processing Preference  . . . . . . . . . .   7
   5.  Implementation Status . . . . . . . . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   9
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   9
     7.1.  Preference Registration . . . . . . . . . . . . . . . . .   9
     7.2.  Method References . . . . . . . . . . . . . . . . . . . .  10
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  10
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  10
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  10
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  11
     9.3.  URIs  . . . . . . . . . . . . . . . . . . . . . . . . . .  12
   Appendix A.  The Brief and Extended Depth Request Header Fields .  13

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   Appendix B.  Examples . . . . . . . . . . . . . . . . . . . . . .  13
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