Developer Resources

Resources

• Building a CalDAV client
• jsical reference

RFCs

General RFCs

• 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)

Specific features

• iCalendar Transport-Independent Interoperability Protocol (iTIP) (RFC 5546)
• [iCalendar Message-Based Interoperability Protocol (iMIP) (RFC 6047)] https://datatracker.ietf.org/doc/html/rfc6047
• CalDAV Scheduling (RFC 6638)
• Calendar Availability (RFC 7953)

Recent RFCs

• Calendaring Extensions to WebDAV (CalDAV): Managed Attachments (RFC 8607)
• Event Publishing Extensions to iCalendar (RFC 9073)
• "VALARM" Extensions for iCalendar (RFC 9074)

Upcoming Drafts

• Support for iCalendar Relationships (draft-ietf-calext-ical-relations)
• Serverside Subscriptions (draft-ietf-calext-serverside-subscriptions)
• Support for Series in iCalendar (draft-ietf-calext-icalendar-series)
• Task Extensions to iCalendar (draft-apthorp-ical-tasks)
• 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)

Non-standard

• CalDAV: Calendar User Notifications
• Shared and Published Calendars in CalDAV