Function select_port

src/remote/inet.cpp:2191–2239

}

static void select_port(rem_port* main_port, Select* selct, RemPortPtr& port)
{
/**************************************
 *
 *	s e l e c t _ p o r t
 *
 **************************************
 *
 * Functional description
 *	Select a descriptor that is ready to read
 *	and return the port block. Additionally,
 *	check if a port's keepalive timer has
 *	expired and return the port block so that
 *	a keepalive packet can be queued. Return
 *	NULL if	none are active.
 *
 **************************************/

	MutexLockGuard guard(port_mutex, FB_FUNCTION);
	while (true)
	{
		Select::HandleState result = selct->checkNext(port);
		if (!port)
			return;

		switch (result)
		{
		case Select::SEL_BAD:
			if (port->port_state == rem_port::BROKEN || (port->port_flags & PORT_connecting))
				continue;
			if (port->port_flags & PORT_async)
				continue;
			return;

		case Select::SEL_DISCONNECTED:
			continue;

		case Select::SEL_READY:
			port->port_dummy_timeout = port->port_dummy_packet_interval;
			return;

		default:
			break;
		}

		if (port->port_dummy_timeout < 0)
			return;
	}
}

static bool select_wait( rem_port* main_port, Select* selct)
{