*/
    @Override
    public SmbSessionImpl getSmbSession ( CIFSContext tf ) {
        return getSmbSession(tf, null, null);
    }


    /**
     *
     * @param tf
     *            context to use
     * @return a session for the context
     */
    @Override
    @SuppressWarnings ( "resource" )
    public synchronized SmbSessionImpl getSmbSession ( CIFSContext tf, String targetHost, String targetDomain ) {

                        /*
                         * preauthentication
                         */
                        try ( SmbSessionImpl smbSession = trans.getSmbSession(getContext().withDefaultCredentials());
                              SmbTreeImpl t = smbSession.getSmbTree(getContext().getConfig().getLogonShare(), null) ) {
                            t.treeConnect(null, null);