客户端从终端接受键盘数据并把数据发送至服务端 服务端把客户端发送过来的数据执行并把结果发送至客户端 客户端和服务端数据发送增加数据包头，进行打包操作-The client from the terminal to accept the keyboard data and the data sent to the server Server to the client to send the data over the implementation and the results s