message.setFlags(request.getFlags());
            message.setTimeout((int) (context.getConfig().getWitnessRegistrationTimeout() / 1000));

            // Send the RPC request
            rpcHandle.sendrecv(message);

            // Create response from RPC message results
            WitnessRegisterResponse response = new WitnessRegisterResponse();
            response.setReturnCode(message.getReturnCode());

    }

    void resolveSids(final DcerpcHandle handle, final LsaPolicyHandle policyHandle, final jcifs.SID[] sids) throws IOException {
        final MsrpcLookupSids rpc = new MsrpcLookupSids(policyHandle, sids);
        handle.sendrecv(rpc);
        switch (rpc.retval) {
        case 0:
        case NtStatus.NT_STATUS_NONE_MAPPED:
        case 0x00000107: // NT_STATUS_SOME_NOT_MAPPED
            break;
        default:

        }
        return this.output;
    }

    /**
     *
     * {@inheritDoc}
     *
     * @see jcifs.smb.SmbPipeHandleInternal#sendrecv(byte[], int, int, byte[], int)
     */
    @SuppressWarnings("resource")
    @Override
    public int sendrecv(final byte[] buf, final int off, final int length, final byte[] inB, final int maxRecvSize) throws IOException {

        throw new IOException("Failed to establish session with " + this.address);
    }

    private SmbNegotiation negotiate(int prt) throws IOException {
        /*
         * We cannot use Transport.sendrecv() yet because
         * the Transport thread is not setup until doConnect()
         * returns and we want to suppress all communication
         * until we have properly negotiated.
         */

     * @param params additional parameters for the request
     * @return the response
     * @throws IOException if an I/O error occurs
     */
    public <T extends Response> T sendrecv(final Request request, final T response, final Set<RequestParam> params) throws IOException {
        if (isDisconnected() && this.state != 5) {
            throw new TransportException("Transport is disconnected " + this.name);

        DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + getAddress().getHostAddress() + "[\\PIPE\\netdfs]", auth);
        try {
            rpc = new MsrpcDfsRootEnum(getServer());
            handle.sendrecv(rpc);
            if (rpc.retval != 0) {
                throw new SmbException(rpc.retval, true);
            }
            return rpc.getEntries();
        } finally {
            try {

                server = server + ":" + this.fileLocator.getPort();
            }
            try (DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + server + "[\\PIPE\\srvsvc]", getContext())) {
                handle.sendrecv(rpc);
                if (rpc.retval != 0) {
                    throw new SmbException(rpc.retval, true);
                }
                aces = rpc.getSecurity();
                if (aces != null) {