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

Place the socket acceptor into the state where it will listen for new connections.

boost::system::error_code listen(
    implementation_type & impl,
    int backlog,
    boost::system::error_code & ec);