Implement a header wrapper #44
Description
Implement the following namespace-level functions to act as accessor shortcuts to make deailing with messages easier:
template <class Tag>
typename basic_response<Tag>::string_type const
header(basic_response<Tag> & message,
typename basic_response<Tag>::string_type const & header_name,
int offset = 0); // throws
template <class Tag>
boost::optional<typename basic_response<Tag>::string_type> const
header_nothrow(basic_response<Tag> & message,
typename basic_response<Tag>::string_type const & header_name,
int offset = 0); // no throw
This should be trivial to implement and should be easy to document as well.