What protocol is used by the Exchange Plug-in and what is its architecture?

What protocol is used by the Exchange Plug-in and what is its architecture?

The Exchange Plug-in is based on the JEC libraries.


JEC Uses WEBDAV/HTTP to communicate with exchange, which means that the Exchange server OWA (Outlook Web Access) need to be on.

Regarding the Architecture, JEC uses ApacheHTTPClient and a modified version Jakarta  Slide to Support Microsoft WEBDAV Exchange API (which is not standard WEBDAV).