How do I free memory after using QNetworkAccessManager::connectToHost

[KaoN]

I tried to using QNetworkAccessManager::connectToHost before actual network request to get a lower network latency, however, I found the memory usage keeps increasing each time when I call connectToHost.

I didn't find any related docs to free memory after connectToHost, wondering if anyone could help me w.ith that, or is it a bug/memory leak for QNetworkAccessManager?

Here is the minimal code:

#include <QCoreApplication>

#include <QNetworkAccessManager>
#include <QTimer>

int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    QNetworkAccessManager manger;
    QTimer timer;
    timer.setInterval(100);
    QObject::connect(&timer,&QTimer::timeout, [&manger](){
        manger.connectToHost("http://www.google.com");
    });
    timer.start();



    return a.exec();
}

[KaoN]

I found the source code,

void QNetworkAccessManager::connectToHost(const QString &hostName, quint16 port)
{
	QUrl url;
	url.setHost(hostName);
	url.setPort(port);
	url.setScheme(QLatin1String("preconnect-http"));
	QNetworkRequest request(url);
	get(request);
}

It seems I have to capture the reply after finished and delete manually.

[SGaist]

Hi,

In this case, it might be simpler to implement your own function for connectToHost. From the code here there's no way to get the reply from the get call.