Introduction - If you have any usage issues, please Google them yourself
This procedure works for UDP hole test program. For simplicity, the application server on the reception of two client connections, so that the two clients establish a UDP channel. Two clients establish a UDP channel, send data to each other without a server forwarding, direct data exchange, then you can close the server program. Server' s default service port is 10000, if the port is already occupied, please modify the service port.