timeserver.java

java 时间服务器 java time server handle the time

import java.io.*;
import java.net.*;
import java.util.*;

public class TimeServer {
 final private static int DAYTIME_PORT = 8001;
 GetFile test = new GetFile();
 
 public static void main(String args[]) throws IOException {
  //创建UDP的Socket
  DatagramSocket socket = new DatagramSocket(DAYTIME_PORT);
  while (true) {
   //缓冲字符变量
   byte buffer[] = new byte[256];
   //数据包变量
   DatagramPacket packet =new DatagramPacket(buffer, buffer.length);
   //接收数据包
   socket.receive(packet);
   //获取时间
  // String date = new Date().toString();
  
   //转换成报文
   buffer = test.getPara("DNS.txt");
   //得到请求的ip地址
   InetAddress address = packet.getAddress();
   //得到请求的ip端口
   int port = packet.getPort();
   //准备报文
   packet = new DatagramPacket(buffer, buffer.length, address, port);
   //发送报文
   socket.send(packet);
  }
 }
}