// ---------------- POŁĄCZENIE Z SERWEREM --------------------------------
    public void ConnectToServer(String ip_adress, String port) {
        server = null;

        boolean error = false;

        try {
            remote = Naming.lookup("rmi://" + ip_adress + ":" + port + "/" + "ArchiverServer");
        } catch (MalformedURLException e) {
            firePropertyChange("Connection error", 0, 1);
            error = true;
            e.printStackTrace();
        } catch (RemoteException e) {
            firePropertyChange("Connection error", 0, 1);
            error = true;
            e.printStackTrace();
        } catch (NotBoundException e) {
            firePropertyChange("Connection error", 0, 1);
            error = true;
            e.printStackTrace();
        }

        if (remote instanceof RemoteInterface)
             server = (RemoteInterface) remote;

        if(error == false)
            firePropertyChange("Connection good", 0, 1);
    }