package praktikum5.aufgabe2;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.net.SocketException;
import java.net.NetworkInterface;

public class MACAdresse {
    public static void main( String args[] ) {
        try {
            InetAddress iaddr1 = InetAddress.getByName("www.fh-dortmund.de");
            InetAddress iaddr2 = InetAddress.getLocalHost();
            InetAddress iaddr3 = InetAddress.getByName("localhost");
            System.out.println(iaddr1.getHostName() + ": " + iaddr1.getHostAddress());
            System.out.println(iaddr2.getHostName() + ": " + iaddr2.getHostAddress());
            System.out.println(iaddr3.getHostName() + ": " + iaddr3.getHostAddress());
            System.out.println();

            byte[] ip = iaddr3.getAddress();
            for(int i = 0; i < ip.length; i++) {
                System.out.println(i + ": " + ip[i]);
            }
            System.out.println();

            InetAddress[] iaddr4 = InetAddress.getAllByName("www.adeso.de");
            for (int i = 0; i < iaddr4.length; i++) {
                System.out.println(i + ": " + iaddr4[i].getHostName() + ": " + iaddr4[i].getHostAddress());
            }
            System.out.println();

            var net = NetworkInterface.getByName("eth0");
            byte[] macAdress = net.getHardwareAddress();
            for (int i = 0; i < macAdress.length; i++) {
                System.out.println(i + ": " + macAdress[i]);
            }
        }
        catch (UnknownHostException e) {
            System.out.println( "Host nicht bekannt: " + e );
        }
        catch (SocketException e) {
            System.out.println("Socket exception: " + e);
        }
    }

}