Introduction - If you have any usage issues, please Google them yourself
UDP hole punching test program, peer-to-peer information transmission, C# Sockets to socket programming, which contains TcpClient and the UdpClient. Used everyone know Tcp safer to send messages, and the the Udp transfer data easily packet loss, but fast, able to pass through the firewall. QQ chat tools underlying transport protocol users more popular is the the Udp agreement (do not know this did not).