Editing WebDAV (section)

== Extensions and derivatives ==
For versioning, the Delta-V protocol under the Web Versioning and Configuration Management working group adds resource revision tracking, published in {{IETF RFC|3253}}.

For searching and locating, the DAV Searching and Locating (DASL) working group never produced any official standard although there are a number of implementations of its last draft. Work continued as non-working-group activity.<ref>[http://www.webdav.org/dasl DASL] {{webarchive|url=https://web.archive.org/web/20040603051812/http://www.webdav.org/dasl/ |date=2004-06-03 }}</ref>  The WebDAV Search specification attempts to pick up where the working group left off, and was published as {{IETF RFC|5323}} in November 2008.<ref>[http://www.greenbytes.de/tech/webdav/draft-reschke-webdav-search-latest.html WebDav SEARCH]</ref>

For calendaring, [[CalDAV]] is a protocol allowing calendar access via WebDAV. CalDAV models calendar events as HTTP resources in [[iCalendar]] format, and models calendars containing events as WebDAV collections.

For groupware, GroupDAV is a variant of WebDAV which allows client/server [[Collaborative software|groupware]] systems to store and fetch objects such as calendar items and address book entries instead of web pages.

For MS Exchange interoperability, WebDAV can be used for reading/updating/deleting items in a mailbox or public folder. WebDAV for Exchange has been extended by Microsoft to accommodate working with messaging data.  Exchange Server version 2000, 2003, and 2007 support WebDAV. However, WebDAV support has been discontinued in Exchange 2010<ref>[https://technet.microsoft.com/en-us/library/aa998911.aspx Discontinued Features: Exchange 2010 SP1 Help] Microsoft TechNet</ref> in favor of Exchange Web Services (EWS), a [[SOAP]]/[[XML]] based [[API]].

=== Additional Windows-specific extensions ===
{{See also|Microsoft Open Specification Promise}}
As part of the Windows Server Protocols (WSPP) documentation set,<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/cc964399.aspx|title=WSPP – Windows Server Protocols documentation|year=2011}}</ref> Microsoft published the following protocol documents detailing extensions to WebDAV:

* [MS-WDVME]: Web Distributed Authoring and Versioning (WebDAV) Protocol: Microsoft Extensions.<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/jj557055.aspx|title=MS-WDVME – Web Distributed Authoring and Versioning (WebDAV) Protocol: Microsoft Extensions|year=2014}}</ref> These extensions include a new verb and new headers, and properties that enable previously unmanageable file types and optimize protocol interactions for file system clients. These extensions introduce new functionality into WebDAV, optimize processing, and eliminate the need for special-case processing.
* [MS-WDV]: Web Distributed Authoring and Versioning (WebDAV) Protocol: Client Extensions.<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/cc250046.aspx|title=MS-WDV – Web Distributed Authoring and Versioning (WebDAV) Protocol: Client Extensions|year=2011}}</ref> The client extensions in this specification extend the WebDAV Protocol by introducing new headers that both enable the file types that are not currently manageable and optimize protocol interactions for file system clients. These extensions do not introduce new functionality into the WebDAV Protocol, but instead optimize processing and eliminate the need for special-case processing.
* [MS-WDVSE]: Web Distributed Authoring and Versioning (WebDAV) Protocol: Server Extensions.<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/cc250200.aspx|title=MS-WDVSE – Web Distributed Authoring and Versioning (WebDAV) Protocol: Server Extensions|year=2011}}</ref> The server extensions in this specification extend WebDAV by introducing new HTTP request and response headers that both enable the file types that are not currently manageable and optimize protocol interactions for file system clients. This specification also introduces a new WebDAV method that is used to send search queries to disparate search providers.
* [MS-WEBDAVE]: Web Distributed Authoring and Versioning Error Extensions Protocol Specification.<ref>{{cite web|url=http://msdn.microsoft.com/en-us/library/cc313126.aspx|title=MS-WEBDAVE – Web Distributed Authoring and Versioning Error Extensions Protocol Specification|year=2011}}</ref> This SharePoint Front-End Protocol describes extended error codes and extended error handling mechanism specified in [MS-WDV] to enable compliant servers to report error condition details on a server response.