synchronized (curResp) {
                if (!curResp.isReceived()) {
                    if (timeout > 0) {
                        curResp.wait(timeout);
                        if (!curResp.isReceived() && handleIntermediate(curReq, curResp)) {
                            continue;
                        }

                        if (curResp.isError()) {

        if (response == null) {
            throw new IOException("Invalid response");
        }
        return response;
    }

    @Override
    protected <T extends Response> boolean handleIntermediate(final Request request, final T response) {
        if (!this.smb2) {
            return false;
        }
        final ServerMessageBlock2Request<?> req = (ServerMessageBlock2Request<?>) request;