Command line application to test the Universal Controller server

UCJavaTester.java

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.Scanner;

public class UCJavaTester {

    /**
     * Commands examples
     *
     * Register player
     * REGISTER:TestPlayer1
     *
     * Deregister player (0 is the player ID)
     * DEREGISTER:0
     *
     * Press key
     * 0:KEY_DOWN:a
     * 0:KEY_DOWN:a:extra_content
     *
     * Joystick (x, y)
     * 0:JOYSTICK:0.5:-0.3
     *
     * Gyro (x, y, z)
     * 0:GYRO:0.3:-0.2:0.4
     */

    public static void main(String[] args) throws IOException {
        String ip;
        int port = 28910;
        int bufferSize = 1024;

        Scanner scanner = new Scanner(System.in);

        System.out.println("Enter IP address");
        ip = scanner.nextLine();

//        System.out.println("Enter port number");
//        port = scanner.nextInt();

//        System.out.println("Enter buffer size");
//        bufferSize = scanner.nextInt();

        System.out.println("---COMMAND PANEL---");

        Socket socket = new Socket(ip, port);
        InputStream in = socket.getInputStream();
        OutputStream out = socket.getOutputStream();

        new Thread(() -> {
            while (true) {
                StringBuilder msg = new StringBuilder();
                byte[] buffer = new byte[bufferSize];

                while (msg.lastIndexOf("<EOC>") == -1) {
                    try {
                        int bytesRead = in.read(buffer);
                        if (bytesRead > -1)
                            msg.append((new String(buffer, 0, bytesRead)));
                    } catch (IOException ex) {
                        System.out.println(ex.getMessage());
                    }
                }

                System.out.println("SERVER: {" + msg + "}");
            }
        }).start();


//        for (int i = 0; i < 10000; i++) {
//            String cmd = "TEST_CMD:" + i;
//
//            if (cmd.equals("exit"))
//                break;
//
//            byte[] toSend = (cmd + "<EOC>").getBytes(StandardCharsets.US_ASCII);
//            out.write(toSend);
//            out.flush();
//
//            Thread.sleep(50);
//        }

        while (true) {
            String cmd = scanner.nextLine();

            if (cmd.equals("exit"))
                break;

            byte[] toSend = (cmd + "<EOC>").getBytes(StandardCharsets.US_ASCII);
            out.write(toSend);
            out.flush();
        }

        in.close();
        out.close();
        socket.close();

        System.exit(0);
    }

}