565     struct tcp_connection_info tcpi;  in fdevent_is_tcp_half_closed()  local
566     socklen_t tlen = sizeof(tcpi);  in fdevent_is_tcp_half_closed()
567     return (0 == getsockopt(fd, IPPROTO_TCP, TCP_CONNECTION_INFO, &tcpi, &tlen)  in fdevent_is_tcp_half_closed()
568             && tcpi.tcpi_state == TCPS_CLOSE_WAIT);  in fdevent_is_tcp_half_closed()
571     struct tcp_info tcpi;  in fdevent_is_tcp_half_closed()
572     socklen_t tlen = sizeof(tcpi);  in fdevent_is_tcp_half_closed()
573     return (0 == getsockopt(fd, IPPROTO_TCP, TCP_INFO, &tcpi, &tlen)  in fdevent_is_tcp_half_closed()
574             && tcpi.tcpi_state == TCPS_CLOSE_WAIT);  in fdevent_is_tcp_half_closed()
577     struct tcp_info tcpi;  in fdevent_is_tcp_half_closed()
578     socklen_t tlen = sizeof(tcpi);/*SOL_TCP == IPPROTO_TCP*/  in fdevent_is_tcp_half_closed()
579     return (0 == getsockopt(fd,     SOL_TCP, TCP_INFO, &tcpi, &tlen)  in fdevent_is_tcp_half_closed()
580             && tcpi.tcpi_state == TCP_CLOSE_WAIT);  in fdevent_is_tcp_half_closed()