答：const int port = 8000 ;

//定义端口号

TcpListener tcplistener = new TcpListener(port);

Console.WriteLine(“侦听端口号： ” + port.ToString());

tcplistener.Start();

//侦听端口号

while (true)

{

Socket socket = tcplistener.AcceptSocket();

//并获取传送和接收数据的Scoket实例

Proxy proxy = new Proxy(socket);

//Proxy类实例化

Thread thread = new Thread(new ThreadStart(proxy.Run));

//创建线程

thread.Start();

//启动线程

}