此程序主要实现网络，打飞机，聊天，两种功能。 先运行服务器程序，然后运行两个客户端程序，请求，连接，输入ip地址，就可实现此功能。 -This procedure the main network, aircraft, chat, two functions. Server program is running first, and then running the two client programs, the request to connect, enter the ip add