CurSourceAppGUID

The principle of having a service in a second application be a slave to the first application can be extended to as many applications as you wish, i.e. One master service can have slaves in many different applications. It is unusual for the master (or a slave) to need to know which application is making an RPC to it. However, for those occasions when this is needed, RPC Manager provides a variable called RPCManager\CurSourceAppGUID, which contains the binary GUID of the application that sourced the current RPC. Like all the other RPCManager\Cur*** variables, it is valid only for the duration of the RPC subroutine call.