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 ( Request request, T response ) {
        if ( !this.smb2 ) {
            return false;
        }
        ServerMessageBlock2Request<?> req = (ServerMessageBlock2Request<?>) request;