p2p聊天首先打开服务器端，启动服务器，服务器开始监测固定端口Peer端程序打开后，输入我的昵称和自定义的本程序通信端口号，点击“登入server”即可-the p2p chat first open the server-side, start the server, server to start monitoring the the fixed ports Peer-side program opens, enter my nickname and custom communication