``template <class Tag>`` *unspecified* ``status_message(basic_response<Tag> const & response)``

Returns a wrapper convertible to ``typename string<Tag>::type`` that

provides the status message of the given response.

``template <class Tag>`` *unspecified* ``ready(basic_response<Tag> const & response)``

Returns a wrapper convertible to ``bool``. The return value is equivalent

to ``true`` if all the response parts have been fetched and it is guaranteed

that a successive call to any wrapper will not block.