public Optional<String> resolveRequestFilter(URI uri, int localPort) {
        String filterId = requestFilterBindings.resolve(uri);
        if (filterId != null) return Optional.of(filterId);
        return Optional.ofNullable(defaultRequestFilters.get(localPort));
    }
Resolves request/response filter (chain) from a {@link URI} instance.

@author Oyvind Bakksjo
@author bjorncs
container-core/src/main/java/com/yahoo/jdisc/http/server/jetty/FilterBindings.java