// refresh anonymous session or fallback to anonymous from guest login
                try ( SmbSessionInternal s = trans
                        .getSmbSession(this.ctx.withAnonymousCredentials(), treesess.getTargetHost(), treesess.getTargetDomain())
                        .unwrap(SmbSessionInternal.class);
                      SmbTreeImpl tr = s.getSmbTree(share, null).unwrap(SmbTreeImpl.class) ) {

                     * sure if the NetBIOS session has been successfully
                     * established.
                     */

                    String tconHostName = sess.getTargetHost();

                    if ( tconHostName == null ) {
                        throw new SmbException("Transport disconnected while waiting for connection");
                    }