* ``sts``: Whether to additionally send a `Strict-Transport-Security` header
* ``sts_max_age``: The maximum age for the `Strict-Transport-Security` header if sent
* ``ct_max_age``: The maximum age for the `Expect-CT` header if sent
* ``sts``: Whether to additionally send a `Strict-Transport-Security` header
* ``sts_max_age``: The maximum age for the `Strict-Transport-Security` header if sent
* ``ct_max_age``: The maximum age for the `Expect-CT` header if sent