udpon.java

Java Switch On/Off source

import java.net.*;

public class UDPOn {
	public static void main(String[] args) {
		
		String ip = "192.168.10.199";
		int port = 5000;
		
		InetAddress inetAddress = null;
		try {
			inetAddress = InetAddress.getByName(ip);
		} catch (Exception e) {
			System.exit(1);
		}
		
		DatagramSocket dsock = null;
		try {
			dsock = new DatagramSocket();
			
			char STX = 0x02;
			char ETX = 0x03;
			
			String MSG = "on";
			String SNDMSG = STX + MSG + ETX;
			
			
			
			DatagramPacket sendPacket = new DatagramPacket(SNDMSG.getBytes(), SNDMSG.getBytes().length, inetAddress, port);
			dsock.send(sendPacket);
			
			System.out.println("SNDMSG: " + SNDMSG);
			
			/**
			byte[] buffer = new byte[100];
			DatagramPacket receivePacket = new DatagramPacket(buffer, buffer.length);
			dsock.receive(receivePacket);
			
			String msg = new String(receivePacket.getData(), 0, receivePacket.getData().length);
			System.out.println("辑滚肺 傈崔罐篮 蔼 : " + msg.trim());
			**/
			
		} catch (Exception e) {
			System.out.println(e);
		} finally {
			if (dsock != null)
				dsock.close();
		}
	}
}