Binding Extensions to Web Distributed Authoring and Versioning (WebDAV)
RFC 5842

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Internet Engineering Task Force (IETF)                          G. Clemm
Request for Comments: 5842                                           IBM
Category: Experimental                                       J. Crawford
ISSN: 2070-1721                                             IBM Research
                                                         J. Reschke, Ed.
                                                              greenbytes
                                                            J. Whitehead
                                                         U.C. Santa Cruz
                                                              April 2010

                         Binding Extensions to
           Web Distributed Authoring and Versioning (WebDAV)

Abstract

   This specification defines bindings, and the BIND method for creating
   multiple bindings to the same resource.  Creating a new binding to a
   resource causes at least one new URI to be mapped to that resource.
   Servers are required to ensure the integrity of any bindings that
   they allow to be created.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for examination, experimental implementation, and
   evaluation.

   This document defines an Experimental Protocol for the Internet
   community.  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 a candidate for any level of
   Internet Standard; see Section 2 of RFC 5741.

   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/rfc5842.

Clemm, et al.                 Experimental                      [Page 1]
RFC 5842              Binding Extensions to WebDAV            April 2010

Copyright Notice

   Copyright (c) 2010 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.

   This document may contain material from IETF Documents or IETF
   Contributions published or made publicly available before November
   10, 2008.  The person(s) controlling the copyright in some of this
   material may not have granted the IETF Trust the right to allow
   modifications of such material outside the IETF Standards Process.
   Without obtaining an adequate license from the person(s) controlling
   the copyright in such materials, this document may not be modified
   outside the IETF Standards Process, and derivative works of it may
   not be created outside the IETF Standards Process, except to format
   it for publication as an RFC or to translate it into languages other
   than English.

Table of Contents

   1. Introduction ....................................................4
      1.1. Terminology ................................................5
      1.2. Method Preconditions and Postconditions ....................6
   2. Overview of Bindings ............................................7
      2.1. Bindings to Collections ....................................7
           2.1.1. Bind Loops ..........................................8
      2.2. URI Mappings Created by a New Binding ......................8
      2.3. COPY and Bindings ..........................................9
           2.3.1. Example: COPY with "Depth: infinity" in
                  Presence of Bind Loops .............................11
           2.3.2. Example: COPY Updating Multiple Bindings ...........13
           2.3.3. Example: COPY with "Depth: infinity" with
                  Multiple Bindings to a Leaf Resource ...............14
      2.4. DELETE and Bindings .......................................15
      2.5. MOVE and Bindings .........................................15
           2.5.1. Example: Simple MOVE ...............................16
           2.5.2. Example: MOVE Request Causing a Bind Loop ..........16
      2.6. PROPFIND and Bindings .....................................18

Clemm, et al.                 Experimental                      [Page 2]
RFC 5842              Binding Extensions to WebDAV            April 2010

      2.7. Determining Whether Two Bindings Are to the Same
           Resource ..................................................18