main.cpp

void MainWindow::downloadConfFile()
{
    QNetworkAccessManager manager;
    QEventLoop q;
    QTimer tT;

    tT.setSingleShot(true);
    connect(&tT, SIGNAL(timeout()), &q, SLOT(quit()));
    connect(&manager, SIGNAL(finished(QNetworkReply*)),
            &q, SLOT(quit()));
    QNetworkReply *reply = manager.get(QNetworkRequest(QUrl(XML_FILE)));

    tT.start(5000);
    q.exec();
    if(tT.isActive())
    {
        qDebug()<<reply->readAll();
        tT.stop();
    }
    else
    {
        qDebug()<<reply->errorString();
        reply->abort();
    }
}