import java.io.IOException;
import java.net.*;
import java.util.ArrayList;
import java.util.List;

public class Server implements Runnable {

	ArrayList<Integer> portslist = new ArrayList<>();
	private byte[] buf = new byte[256];
	DatagramSocket socket;

	public Server(ArrayList<Integer> portslist) {

		this.portslist = portslist;

	}

	public static void main(String args[]) throws IOException {

		for(int i=0; i<args.length; i++) {
			if(!args[i].matches("\\d*")) {

				System.out.println("Program can be started by using list of ports");
				System.exit(0);
			}
		}

		System.out.println("START");


	}

	@Override
	public void run() {

		while (true) {

			try {
				socket = new DatagramSocket(2);
			} catch (SocketException e) {

				e.printStackTrace();
			}

			DatagramPacket packet = new DatagramPacket(buf, buf.length);
			try {
				socket.receive(packet);
			} catch (IOException e) {

				e.printStackTrace();
			}

			InetAddress address = packet.getAddress();
			int port = packet.getPort();
			packet = new DatagramPacket(buf, buf.length, address, port);
			String received = new String(packet.getData(), 0, packet.getLength());

		}
	}
}