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Client server interface

The 
BlackBerry AtHoc
 client server interface API (CSI) refers to the specification described in the 
AtHoc
 Client Server Interface (CSI) Protocol - Technical Specification
.
CSI includes Sign On (SO), Check Update (CU), Get Update (GU), and Get Service (GS).
The desktop app uses Microsoft’s WinInet API to communicate with the 
BlackBerry AtHoc
 server. The desktop app assembles a query string according to the CSI specification for the particular operation (SO, CU, GU, or GS) and appends it to the Base URL and passes that in the WinInet InternetConnect API call.