REPORT DAV:principle-property-search with Agendav (discovering /dav/principals)

[dilyanpalauzov]

Agendav apparently grants the WebDAV ACLs successfully when used with DAViCal. Before granting ACLs AgentDAV calls REPORT DAV:principle-property-search on the “base URL”, which is for Cyrus, due the lack of better ideas, server/dav/calendars.

In Cyrus REPORT DAV:principle-property-search works only when called on /dav/principals, it does not work on /dav/principals/user/x (the DAV:current-user-principal result) nor on /dav/calendars.

How is a WebDAV client supposed to discover the /dav/principals/ address, towards which REPORT DAV:principle-property-search can be called?

Is it wrong to do it like DAViCal and allow the REPORT on /dav/calendars/?