in flood_socket_generic.c [192:197]
apr_status_t generic_end_conn(socket_t *sock, request_t *req, response_t *resp)
{
generic_socket_t *gsock = (generic_socket_t *)sock;
gsock->ssl ? ssl_close_socket(gsock->s) : close_socket(gsock->s);
return APR_SUCCESS;
}