Fr:RFC Compliance

Up to release 0.5.x the development of DAViCal was largely following the needs of the publicly available client software. At that point there was fairly complete interoperability with the publicly available software at the time with support for CalDAV (Mulberry, Mozilla Calendar, Evolution and Chandler).

In later releases we have put some focus into ensuring that DAViCal communication is compliant with the relevant RFCs, regardless of whether the client software requires RFC compliance. In general, however, our intention is to pragmatically implement support for specification areas which are in actual use, prior to implementation of specification areas which might become used in the future.

From 0.9.8 there is significant advancement in spec implementation due to changes in the underlying structure for generating responses.

From 0.9.9 we are starting to move into a phase of implementing standards during their design phase, with the standards coverage of DAViCal now mostly exceeding what is used by common client software.

Related RFCs and Drafts

 * Overview of RFC statuses (full explanation)


 * (Calendaring Extensions to WebDAV) (IETF Proposed Standard)
 * (Internet-Draft, expires February, 2010)
 * Defines the "calendar-schedule" feature of CalDAV.
 * Changes from draft four are considerable (1)
 * version 6 -> 7 changes are also significant, but hopefully this is close to the final one.
 * In 0.9.9.1 we attempt to target an as-yet-unreleased -09 version of the draft which was received privately from the authors.


 * (IETF Proposed Standard)
 * Scheduling Events, Free Busy, To-do's and Journal Entries
 * Docs about implementation in Mozilla lightning and source code of the JS implementation.
 * (IETF Proposed Standard)
 * (IETF Proposed Standard)
 * (IETF Proposed Standard)
 * (IETF Proposed Standard)
 * S3.6 is referred to in S7.8
 * The expand-property report and supported-report-set and supported-method-set properties are supported by DAViCal from 0.9.8 onwards.


 * "Calendar Access Protocol" (Experimental Protocol)
 * Similar to WCAP from Sun.


 * (Standards Track)


 * (IETF Proposed Standard) - supported from 0.9.6.2 onwards.
 * (IETF Proposed Standard) - supported from 0.9.8 onwards.
 * - Initial support towards -10 draft from 0.9.9.1
 * CardDAV Directory Gateway Extension (Draft, not supported)
 * - supported from 0.9.8 onwards. 0.9.9 supports -02, 0.9.9.1 supports -03


 * (standards track) - supported for caldav/carddav URLs from 0.9.9.1


 * - supported from 0.9.9 onwards.
 * - supported from 0.9.9 onwards.
 * - not supported.

Interpreted Documentation
There has been some effort to break down the elements of a number of these RFCs into a broader structure within this wiki. This is best seen by starting at the DAV page, which it is hoped will evolve to be the root of a hierarchy of useful interlinked documentation, and may ultimately replace this page.

Current Status of DAViCal Compliance
As at 0.9.9 significant parts of the CalDAV specification are supported, along with most of DAV (except COPY). Many elements of WebDAV access control are supported, especially with the new permissions structure which arrived in 0.9.8, but this area could still do with some more work. The scheduling extensions to CalDAV are now largely supported (they work with iCal3/iCal4, and at present no free-software clients support these extensions) and the draft is expected to be ratified within the next few months. WebDAV tickets and WebDAV Bindings are also supported in 0.9.9, and WebDAV Sync support was upgraded to the -03 draft at that release also.

Further detail may be in these occasionally maintained pages covering specific important RFCs: 