Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is an older version of Boost and was released in 2014. The current version is 1.89.0.
Get the last error associated with the stream buffer.
virtual const boost::system::error_code & error() const;
An error_code corresponding
to the last error from the stream buffer.