}
    }

    /**
     * Check if rate limiting is enabled.
     * @return true if rate limiting is enabled
     */
    public boolean isEnabled() {
        return ComponentUtil.getFessConfig().isRateLimitEnabled();
    }

    /**
     * Get the client IP address from the request, considering proxy headers.
     * Only trusts X-Forwarded-For/X-Real-IP headers when the request comes from a trusted proxy.