if ( this.smb2 && ! ( request instanceof ServerMessageBlock2 ) ) {
            throw new SmbException("Not an SMB2 request " + request.getClass().getName());
        }
        else if ( !this.smb2 && ! ( request instanceof ServerMessageBlock ) ) {
            throw new SmbException("Not an SMB1 request");
        }

        this.negotiated.setupRequest(request);

        if ( response != null ) {

            /*
             * NtTrans Query Security Desc Request / Response
             */
            NtTransQuerySecurityDesc request = new NtTransQuerySecurityDesc(getContext().getConfig(), f.getFid(), types);
            response = th.send(request, response, RequestParam.NO_RETRY);
            return response.getSecurityDescriptor();
        }
    }

                }

                request.setSessionId(this.sessionId);
                request.setUid(this.uid);

                if ( request.getDigest() == null ) {
                    request.setDigest(getDigest());
                }

                if ( request instanceof RequestWithPath ) {
                    RequestWithPath rpath = (RequestWithPath) request;