ip.message_flag This module contains flag constants useful to send/receive operations. do_not_route The flag with same name in Boost.Asio: Specify that the data should not be subject to routing. end_of_record The flag with same name in Boost.Asio: Specifies that the data marks the end of a record. out_of_band The flag with same name in Boost.Asio: Process out-of-band data. peek The flag with same name in Boost.Asio: Peek at incoming data without removing it from the input queue. toendpoint tcp.acceptor