__Asio__

#include <boost/asio/io_context.hpp>
namespace net = boost::asio;
net::io_context ioc;

[@https://think-async.com/Asio/ Asio (Standalone)]

#include <asio/io_context.hpp>
namespace net = asio;
net::io_context ioc;

[@https://github.com/chriskohlhoff/networking-ts-impl networking-ts-impl]

#include <experimental/io_context>
namespace net = std::experimental::net;
net::io_context ioc;

* [@boost:/doc/html/boost_asio/reference/serial_port.html Serial ports]
* [@boost:/doc/html/boost_asio/reference/local__stream_protocol.html UNIX domain sockets]
* [@boost:/doc/html/boost_asio/reference/signal_set.html POSIX signals] (e.g. SIGINT, SIGABORT)
* [@boost:/doc/html/boost_asio/reference/ssl__stream.html TLS streams] (such as OpenSSL)