@WebSocket
public class LocationDataWebSocket {

    private final ScheduledExecutorService executorService = Executors.newScheduledThreadPool(1);

    static double x;
    static double y;
    static double z;
    static double yaw;

    @OnWebSocketClose
    public void onClose(int statusCode, String reason) {
        HifiMC.LOGGER.info("Close: " + reason);
    }

    @OnWebSocketError
    public void onError(Throwable t) {
        HifiMC.LOGGER.error("Error: ", t);
    }

    @OnWebSocketConnect
    public void onConnect(Session session) {
        HifiMC.LOGGER.info("Connect: " + session.getRemoteAddress().getAddress());

        executorService.scheduleAtFixedRate(() -> {
                try {
                    session.getRemote().sendString("{" +
                                                   "\"x\":" + x + ", " +
                                                   "\"y\":" + y + ", " +
                                                   "\"z\":" + z + ", " +
                                                   "\"yaw\": " + yaw + "} ");

                } catch (IOException e) {
                    try {
                        session.getRemote().sendString(e.toString());
                    } catch (IOException ef) {
                    }
                }
            },
            100, 100, TimeUnit.MILLISECONDS);
    }

    @OnWebSocketMessage
    public void onMessage(String message) {
        HifiMC.LOGGER.info("Message: " + message);
    }
}