WebDAV: Download group of vCards
If you need to download the complete address book or many vCards at once, you can do this in one request using "CARDDAV:addressbook-multiget" report defined in RFC 6352. AddressBookMultigetFirst(), AddressBookMultigetNext(), AddressBookMultigetClose() methods of TElWebDAVClient class are used to request and process such reports.
First of all you should call TElWebDAVClient.AddressBookMultigetFirst() method to perform the request and get the property values for the first vCard from a report result. The method accepts several parameters:
vCard body can be retrieved via CARDDAV:address-data property on each report processing iteration.