QSslSocket - Unknown error

    connect(this, SIGNAL(connected()), SLOT(m_connected()));
    connect(this, SIGNAL(readyRead()), SLOT(m_readyRead()));
    connect(this, SIGNAL(disconnected()), SLOT(m_disconnected()));
    connect(this, SIGNAL(sslErrors(QList<QSslError>)), this, SLOT(m_sslErrors(QList<QSslError>)));

...
    if(!supportsSsl()) {
        exit(-1);
    }

    connectToHostEncrypted("assa.intertelecom.ua", 80);

    if (!waitForEncrypted()) {
        qDebug() << errorString();
        return;
    }