return host.matches("^[a-zA-Z0-9.-]+$");
    }

    /**
     * Add path to blacklist
     *
     * @param path path or pattern to blacklist
     */
    public void addToBlacklist(String path) {
        blacklistedPaths.add(normalizePath(path).toLowerCase());
    }

    /**
     * Add path to whitelist
     *
     * @param path path or pattern to whitelist
     */