Nic Nac

Hello, I'm trying to use OpenOPC to communicate between a linux client (raspberry pi) and a windows server. I've installed the Matrikon Simulation Server and the OpenOPC Gateway Service aswell. But I can't connect my raspberry pi, When I use: import OpenOPC opc=OpenOPC.open_client('localhost') (while localhost is the IP of my windows machine running the Gateway Service) i receive this error message: "Pyro4.errors.CommunicationError: cannot connect to ('localhost'. 7766): [Errno 110] Connection timed...