Robuta

https://www.boost.org/doc/libs/1_67_0/doc/html/boost_asio/reference/posix__stream_descriptor/non_blocking.html

https://www.boost.org/doc/libs/1_49_0/doc/html/boost_asio/reference/posix__basic_stream_descriptor/non_blocking/overload3.html

https://www.boost.org/doc/libs/1_56_0/doc/html/boost_asio/reference/socket_acceptor_service/non_blocking.html