QXmppClient::connectToServer bad behaviour when bad Host or Port

[miguelangelorenes]

I am doing an XMPP client based on qxmmp.
According with doucmentations:

Attempts to connect to the XMPP server. Server details and other configurations are specified using the config parameter. Use signals connected(), error(QXmppClient::Error) and disconnected() to know the status of the connection.

But, for some reason I am not getting any of these signals when trying to connect with a bad port or a bad server.
My code is the follow:

//XMPP Login information
    QXmppConfiguration conf;
    conf.setHost(server);
    conf.setPort(port);
    conf.setDomain(domain);
    conf.setUser(node);
    conf.setResource(resource);
    conf.setPassword(password);
    conf.setAutoReconnectionEnabled(false);

    //Connect to every QXMPP signals
    connect(m_qxmmpClient.data(), SIGNAL(connected()), SLOT(onConnected()));
    connect(m_qxmmpClient.data(), SIGNAL(disconnected()), SLOT(onDisconnected()));
    connect(m_qxmmpClient.data(), SIGNAL(loggerChanged(QXmppLogger*)), SLOT(onLoggerChanged(QXmppLogger*)));
    connect(m_qxmmpClient.data(), SIGNAL(messageReceived(QXmppMessage)), SLOT(onMessageReceived(QXmppMessage)));
    connect(m_qxmmpClient.data(), SIGNAL(presenceReceived(QXmppPresence)), SLOT(onPresenceReceived(QXmppPresence)));
    connect(m_qxmmpClient.data(), SIGNAL(iqReceived(QXmppIq)), SLOT(onIqReceived(QXmppIq)));
    connect(m_qxmmpClient.data(), SIGNAL(sslErrors(QList<QSslError>)), SLOT(onSSLErrors(QList<QSslError>)));
    connect(m_qxmmpClient.data(), SIGNAL(stateChanged(QXmppClient::State)), SLOT(onStateChanged(QXmppClient::State)));

    //Connect to XMPP server
    m_qxmmpClient->connectToServer(conf);

By other way, I am getting stateChanged signal with value QXmppClient::DisconnectedState.

I would like to know if I have to manage in my side connection status or I should receive a connect/disconnet/error signal any time I try to connect.