void ctl_tcp_shutdown(CTL_SOCKET_t s);
ctl_tcp_shutdown begins the three-way shutdown handshake on socket soc after all outgoing data has been sent. Socket soc's remote TCP partner is sent a FIN packet, indicating end-of-stream. Half-open connections are not supported—the classic socket's ‘how’ parameter is always SD_BOTH.
ctl_tcp_socket, ctl_tcp_connect, ctl_tcp_send, ctl_tcp_recv, ctl_tcp_close_socket