}

        while (true) {
            Subject s = this.credentials.getSubject();
            if (ctx == null) {
                ctx = createContext(trans, tdomain, negoResp, !anonymous, s);
            }
            token = createToken(ctx, token, s);

            if (token != null) {

                ipc.send(new Trans2GetDfsReferral(ctx.getConfig(), path), resp);
                dfsResp = resp.getDfsResponse();
            }

            if (dfsResp.getNumReferrals() == 0) {
                return null;
            }
            if (rn == 0 || dfsResp.getNumReferrals() < rn) {

                        searchHelper.update(id, builder -> {
                            final Script script = ComponentUtil.getLanguageHelper()
                                    .createScript(doc, "ctx._source." + fessConfig.getIndexFieldFavoriteCount() + "+=1");
                            builder.setScript(script);
                            final Map<String, Object> upsertMap = new HashMap<>();