此程序为网络通信的客户端界面。客户端首先向服务器端发送连接请求，连接成功后能向服务器端发送数据，也能接收服务器端发送过来的数据并显示。-This program for network communication client interface. The client to the server delivers first connection request, after the success can connect to the server to send data, also ca