vs_uebung4/VerteilteSysteme-Examples/src/verteiltesysteme/socket/timecounter/UDPTimeCounterClient.java

package verteiltesysteme.socket.timecounter;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

class UDPTimeCounterClient {
	public static void main(String args[]) throws Exception {
		String hostname = "192.168.73.158";
		int udpPort = 36038;
		BufferedReader inFromUser = new BufferedReader(new InputStreamReader(System.in));
		DatagramSocket clientSocket = new DatagramSocket();
		InetAddress IPAddress = InetAddress.getByName(hostname);
		byte[] sendData = new byte[1024];
		byte[] receiveData = new byte[1024];
		DateFormat df = new SimpleDateFormat("dd.MM.yyyy HH:mm:ss");
				
		System.out.println("Bitte geben Sie eine Zahl ein: ");
		Long number = new Long(inFromUser.readLine());
		sendData = number.toString().getBytes();

		System.out.println(System.lineSeparator());
		System.out.println("Zeit vor Versand = " + System.currentTimeMillis() + " " + df.format(new Date(System.currentTimeMillis())));
		DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, udpPort);
		clientSocket.send(sendPacket);
		System.out.println("Zeit nach Versand = " + System.currentTimeMillis() + " " + df.format(new Date(System.currentTimeMillis())));
		DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
		clientSocket.receive(receivePacket);
		System.out.println("Zeit nach Empfang = " + System.currentTimeMillis() + " " + df.format(new Date(System.currentTimeMillis())));
		System.out.println(System.lineSeparator());
		
		String result = new String(receivePacket.getData());
		System.out.println("Ausgabe vom Server:" + System.lineSeparator() + result);
		System.out.println(System.lineSeparator());
		clientSocket.close();
	}
}