Java tutorial
/* * Copyright (C) 2015 Timo Vesalainen <timo.vesalainen@iki.fi> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package org.vesalainen.net.sntp; import java.io.IOException; import java.net.DatagramPacket; import java.net.DatagramSocket; import java.net.SocketException; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.commons.net.ntp.NtpV3Impl; /** * * @author Timo Vesalainen <timo.vesalainen@iki.fi> */ public class SNTPServer implements Runnable { private Thread thread; public void start() { thread = new Thread(this); thread.start(); } @Override public void run() { try { DatagramSocket socket = new DatagramSocket(123); byte[] buffer = new byte[1024]; DatagramPacket packet = new DatagramPacket(buffer, buffer.length); while (true) { socket.receive(packet); NtpV3Impl msg = new NtpV3Impl(); msg.setDatagramPacket(packet); System.err.println(msg); } } catch (SocketException ex) { Logger.getLogger(SNTPServer.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(SNTPServer.class.getName()).log(Level.SEVERE, null, ex); } } }