SmbTransport trans = SmbTransport.getSmbTransport(addr, 0);
            CacheEntry entry = new CacheEntry(Dfs.TTL * 10L);

            DfsReferral dr = trans.getDfsReferrals(auth, "", 0);
            if (dr != null) {
                DfsReferral start = dr;
                do {
                    String domain = dr.server.toLowerCase();

     * @param name
     * @param targetHost
     * @param targetDomain
     * @param rn
     * @return dfs referral
     * @throws SmbException
     * @throws CIFSException
     */
    DfsReferralData getDfsReferrals ( CIFSContext ctx, String name, String targetHost, String targetDomain, int rn ) throws CIFSException;


    /**
     * @return whether signatures are supported but not required
     * @throws SmbException
     */

            case NtStatus.NT_STATUS_PATH_NOT_COVERED:
                if( req.auth == null ) {
                    throw new SmbException( resp.errorCode, null );
                }

                DfsReferral dr = getDfsReferrals(req.auth, req.path, 1);
                if (dr == null)
                    throw new SmbException(resp.errorCode, null);   

                SmbFile.dfs.insert(req.path, dr);
                throw dr;

                SmbTransportInternal trans = dc != null ? dc.unwrap(SmbTransportInternal.class) : null;
                if ( trans != null ) {
                    // get domain referral
                    initial = trans.getDfsReferrals(tf.withAnonymousCredentials(), "", trans.getRemoteHostName(), authDomain, 0);
                }
                if ( initial != null ) {

        DfsReferralData dr = null;
        if ( !getContext().getConfig().isDfsDisabled() ) {
            try {
                dr = getDfsReferrals(getContext(), path, req.getServer(), req.getDomain(), 1);
            }
            catch ( CIFSException e ) {
                throw new SmbException("Failed to get DFS referral", e);
            }
        }