* Store references to the map and key so that
                 * SmbFile.resolveDfs can re-insert the dr list with
                 * the dr that was successful so that subsequent
                 * attempts to resolve DFS use the last successful
                 * referral first.
                 */
                tmp.setCacheMap(links.map);
                tmp.setKey("\\");
                tmp = tmp.next();

                    return null;
                }
                int before = this.connectionState.getAndSet(1);
                if ( before == 1 ) {
                    // concurrent connection attempt
                    if ( waitForState(transport) == 2 ) {
                        // finished connecting
                        return null;
                    }
                    // failure to connect