Hi, Suppose I have two machines Server S and Client C. TCP connection is one way i.e. from server S to client C while UDP connection is two way. Now if an application running at client C wants to connect to an application running at server S then through UDP it must ask the server application to connect to the client C using TCP. I dont know how to implement this. How can i tell a process at server S to connect to a port on the Client C? BTW the application here is any DC Hub(at server S) and valknut(at client C). Also server machine can be anything platform while client is running Linux. Any help is much appreciated .