1.7 Versioning and Capability Negotiation

  • Supported Transports: This specification uses HTTP, as described in [RFC2068], and HTTPS, as described in [RFC2818], as its only transports.

  • Versioning: This document introduces no new versioning mechanisms except those that already exist in WebDAV and HTTP as described in [RFC2818] and [RFC2068].

  • Capability Negotiation: Clients can call the PROPFIND method on the Root folder for the urn:schemas:httpmail:calendar property. If the property exists, the server supports the WebDAV Extensions for Calendaring Support.