Hi, everyone: Now I have a project. In this project I have to transmit the TCP protocol into UDP protocol. The basic structure is like this: 1 tcp 2 udp 3 tcp 4 MyProject 1 tcp 4 in common In common when the 1 and 4 communicate with each other they use tcp/ip protocol. But in my project because of some reasons I have to add 2 proxies in this line such as 2 and 3 based on udp protocol. I want to know if you have the better resolution or good protocol transmisson tool? Best wishes. Thank you. cheng