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Developer Resources
Thomas Citharel edited this page Jun 13, 2023
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(Support means support at the server level, not that we have all the features in the Calendar app or the groupware settings)
- ✅ Internet Calendaring and Scheduling Core Object Specification (iCalendar) (RFC 5545) (previously RFC 2445)
- ✅ Calendaring Extensions to WebDAV (CalDAV) (RFC 4791)
- ✅ New Properties for iCalendar (RFC 7986)
- ✅ Parameter Value Encoding in iCalendar and vCard (RFC 6868)
- ✅ iCalendar Transport-Independent Interoperability Protocol (iTIP) (RFC 5546)
- ✅ iCalendar Message-Based Interoperability Protocol (iMIP) (RFC 6047)
- ✅ CalDAV Scheduling (RFC 6638)
- ✅ Calendaring Extensions to WebDAV (CalDAV): Time Zones by Reference (RFC 7809)
- ✅ Calendar Availability (RFC 7953)
- ❌ Calendaring Extensions to WebDAV (CalDAV): Managed Attachments (RFC 8607)
- ❌ Event Publishing Extensions to iCalendar (RFC 9073)
- ❌ "VALARM" Extensions for iCalendar (RFC 9074)
- ❌ Support for iCalendar Relationships (RFC 9253)
- JSCalendar: Converting from and to iCalendar (draft-ietf-calext-jscalendar-icalendar)
- Calendar subscription upgrades (draft-ietf-calext-subscription-upgrade)
- VPOLL: Consensus Scheduling Component for iCalendar (draft-ietf-calext-vpoll)
- Support for Series in iCalendar (draft-ietf-calext-icalendar-series)
- Task Extensions to iCalendar (draft-apthorp-ical-tasks)
- Serverside Subscriptions (draft-ietf-calext-serverside-subscriptions-02)
- ❌ CalDAV: Calendar User Notifications
- ✅ Shared and Published Calendars in CalDAV
Support from Sabre is based on an old abandoned draft (
draft-pot-caldav-sharing-01) - ✅ Calendar User Proxy Functionality in CalDAV
- Apple has some more non-standard extensions in https://github.com/apple/ccs-calendarserver/tree/master/doc/Extensions
- Nextcloud's own specific properties https://github.com/nextcloud/calendar/wiki/Nextcloud-specific-properties