This unloads the UPnP (Universal Plug and Play) module that was previously loaded with mnStartUPNP.
bool Block: If set to true the command will block until the operation has completed.
When blocking:
0 if no error occurred
-1 if an error occurred
When not blocking:
Any number; this is the action to be used with mnPollUPNP.
-1 if an error occurred
DBP
C++
.Net