synchronized (transport()) {
        if( response != null ) {
            response.received = false;
        }

        expiration = System.currentTimeMillis() + SmbTransport.SO_TIMEOUT;
        sessionSetup( request, response );
        if( response != null && response.received ) {
            return;
        }

        if (request instanceof SmbComTreeConnectAndX) {

                }

                T chainedResponse;
                try {
                    chainedResponse = sessionSetup(request, response);
                }
                catch ( GeneralSecurityException e ) {
                    throw new SmbException("Session setup failed", e);
                }