...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Create a completion token to capture error_code values to a variable.
template< typename CompletionToken> redirect_error_t< typename decay< CompletionToken >::type > redirect_error( CompletionToken && completion_token, boost::system::error_code & ec);
Header: boost/asio/redirect_error.hpp
Convenience header: boost/asio.hpp