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

Close the acceptor.

void close(
    boost::system::error_code & ec);

This function is used to close the acceptor. Any asynchronous accept operations will be cancelled immediately.

A subsequent call to open() is required before the acceptor can again be used to again perform socket accept operations.

boost::asio::ip::tcp::acceptor acceptor(my_context);
...
boost::system::error_code ec;
acceptor.close(ec);
if (ec)
{
  // An error occurred.
}