import java.io.*;
import java.net.*;
public class Server12_4
{
	public static void main(String args[])
	{
		try
		{
			ServerSocket soc=new ServerSocket(9999); 
			soc.setReceiveBufferSize(1024);
			soc.setSoTimeout(10000);
			System.out.println("服务器端接收缓冲区大小为："+soc.getReceiveBufferSize());
			System.out.println("启动服务器成功，等待端口号9999");
			Socket client=soc.accept();
			System.out.println("连接成功！来自"+client.toString());
			BufferedReader in=new BufferedReader(new InputStreamReader(client.getInputStream()));
			PrintWriter out=new PrintWriter(client.getOutputStream(), true);
			while(true)
			{
				String str="";
				str=in.readLine();
				if(str!="")
				System.out.println(str);
				if(str.equals("END")||client.isClosed())
				{
					System.out.println("客户已退出");
					break;
				}
				out.println("服务器响应："+str);
				out.flush();
			}
			System.out.println("服务已经关闭 ");
			soc.close();
			client.close();			
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}		
	}
}