UniAddress getFirstAddress() throws UnknownHostException {
        addressIndex = 0;

        final String host = url.getHost();
        final String path = url.getPath();
        final String query = url.getQuery();

        if (query != null) {
            final String server = queryLookup(query, "server");
            if (server != null && server.length() > 0) {
                addresses = new UniAddress[1];

        WebConfigCQ cq = new WebConfigCQ();
        if (queryLambda != null) {
            queryLambda.callback(cq);
        }
        FilterAggregationBuilder builder = regFilterA(name, cq.getQuery());
        if (opLambda != null) {
            opLambda.callback(builder);
        }
        if (aggsLambda != null) {
            WebConfigCA ca = new WebConfigCA();
            aggsLambda.callback(ca);

        UserCQ cq = new UserCQ();
        if (queryLambda != null) {
            queryLambda.callback(cq);
        }
        FilterAggregationBuilder builder = regFilterA(name, cq.getQuery());
        if (opLambda != null) {
            opLambda.callback(builder);
        }
        if (aggsLambda != null) {
            UserCA ca = new UserCA();
            aggsLambda.callback(ca);