public static int findFreePort() {
        ServerSocket socket = null;
        try {
            socket = new ServerSocket(0);
            socket.setReuseAddress(true);
            int port = socket.getLocalPort();
            closeQuietly(socket);
            return port;
        } catch (IOException e) {
            throw new UncheckedIoException(e);
        } finally {
            if (socket != null) {
                closeQuietly(socket);
            }
        }
    }