How to limit download speed with QHttp ?

[THRESHE]

Has anyone tried to compile and run source code from the article ? I've tried it both on MacOS and Windows but result is the same - half CPU time and constant memory growth
I've tried to use this source like this:

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);
 
	QString str = "http://ua.fishki.net/picsw/122007/21/video/switch_on.wmv";
 	QUrl url(str);
 
    RcTcpSocket socket;
	QHttpRequestHeader header("GET", str);
 	QHttp http;
 	QFile file("Rate.wmv");
	http.setSocket(&socket);
	http.setHost(url.host());
	http.get(url.path(), &file);
 
    RateController controller;
    controller.setUploadLimit(512);
    controller.setDownloadLimit(2048);
    controller.addSocket(&socket);
    return app.exec();
}

int main(int argc, char **argv)
{
    QCoreApplication app(argc, argv);

	QString str = "http://ua.fishki.net/picsw/122007/21/video/switch_on.wmv";
 	QUrl url(str);

    RcTcpSocket socket;
	QHttpRequestHeader header("GET", str);
 	QHttp http;
 	QFile file("Rate.wmv");
	http.setSocket(&socket);
	http.setHost(url.host());
	http.get(url.path(), &file);

    RateController controller;
    controller.setUploadLimit(512);
    controller.setDownloadLimit(2048);
    controller.addSocket(&socket);
    return app.exec();
}

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