Question

I managed to set up a server(on PC) and a Client (on device) thru the IP address .Now I want to send a meesage to the PC to move left or right depending if I hit the volume up or down…

Client:

   @Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) 
    {
        mtcpclient.write(1); //I need to implement write function..
        return true;
    }
    else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN){
        mtcpclient.write(2);//I need to implement write function..
        return true;
    }

    return super.onKeyDown(keyCode, event);
}

Server:

private void processCommand(int command) {//Recieve int and decide to go right or left
    try {
        Robot robot = new Robot();
        switch (command) {
        case 1:
            robot.keyPress(KeyEvent.VK_RIGHT);
            System.out.println("Right");
            break;
        case 2:
            robot.keyPress(KeyEvent.VK_LEFT);
            System.out.println("Left");
            break;
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

Answer 1

If your question is how to send data…here is a simple example on how to send data via TCP.

String message = "Message to server";
String ipAdd = "127.0.0.1";
int port = 6789;
InetAddress ip = InetAddress.getByName(ipAdd);
Socket clientSocket = new Socket(ip, port);
DataOutputStream outToServer = new DataOutputStream(clientSocket.getOutputStream());
outToServer.writeBytes(message);
outToServer.flush();
clientSocket.close();

Then you just need to write a similar listener on your computer.