代码实现了udp和tcp在局域网中打洞穿透防火墙的技术，包含原理说明文档,Udp and tcp code implements making holes on the firewall in LAN technology, with the principles of documentation

网络tcp打洞技术，可以穿过过NAT进行直接点对点通信。-Tcp holes network technology, can be had through direct peer-to-peer communications NAT.