Have you ever seen something like this, when connecting to an OPC server?
opcda://TEST-OPC/Kepware.KEPServerEX.V5/{B3AF0BF6-4C0C-4804-A122-6F3B160F4397}
It looks like an URL. But, is it an URL? In this case, you might guess that it refers to an OPC Data Access server, and that the TEST-OPC is the name of the computer, "KEPServerEX.V5" is the OPC server's ProgID, and {B3AF0BF6-4C0C-4804-A122-6F3B160F4397} is its CLSID.
