return t.send(request, response, params);
            }
            catch ( DfsReferral dre ) {
                if ( dre.getData().unwrap(DfsReferralDataInternal.class).isResolveHashes() ) {
                    throw dre;
                }
                request.reset();
                log.trace("send0", dre);
            }
        }

        throw new CIFSException("Loop in DFS referrals");
    }

        for( ;; ) {
            resolveDfs(request);
            try {
                tree.send( request, response );
                break;
            } catch( DfsReferral dre ) {
                if( dre.resolveHashes ) {
                    throw dre;
                }
                request.reset();
            }
        }
    }

    static String queryLookup( String query, String param ) {