import java.io.*;
import java.net.*;
import java.nio.charset.*;
import java.util.Scanner;

class TelloClient
{
   public static void main(String args[]) throws Exception
   {
    String sentence = "";
    String responseSentence= "";
    Scanner scanner = new Scanner(System.in, "UTF-8");
    DatagramSocket clientSocket = new DatagramSocket();

    InetAddress IPAddress = InetAddress.getByName("tello");

    System.out.println("Connessione al Tello effettuata.");

    byte[] sendData = null;
    byte[] receiveData = new byte[256];

    while (!sentence.equals("bye")){
       System.out.print("Inserisci comando: ");
       sentence = scanner.nextLine();

       sendData = sentence.getBytes();
       DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 8889);
       clientSocket.send(sendPacket);

       DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
       clientSocket.receive(receivePacket);

       responseSentence = new String(receivePacket.getData(), StandardCharsets.UTF_8);

       System.out.println("FROM Tello:" + responseSentence);
      }//end while

    clientSocket.close();
   }
}