局域网内的UDP文件传输程序 P2P(点对点)的流行产生了大批网络传输软件，这个是自己写一个简单的P2P文件传输，一方发送文件，一方接受，直到传输完整个文件。-UDP LAN file transfer procedures P2P (peer-to-peer) pandemic has had a large number of network transmission software This is himself wrote a simple peer-to-peer file tr