How to implement request completion wait with QNetworkAccessManager in Qt?

Question

Qt

There are examples on the Internet on how to implement it by connecting the slot to the QNetworkReply::finished signal with QEventLoop, but I did not find it with QNetworkAccessManager::replyFinished. Inside the handler, after receiving the data, another request is sent based on them and this is repeated.
I also wanted to know how to set a timeout. If it fails to connect within 3 seconds, it sends another request.

Answer 1

QNetworkAccessManager manager;
QEventLoop loop;
QObject::connect(&manager, QOverload<QNetworkReply*>::of(&QNetworkAccessManager::finished),
                 &loop, &QEventLoop::quit);
...
loop.exec();

And for a timeout, you can call QTimer::singleShot(3000, &loop, &QEventLoop::quit);
PS: locks should be avoided altogether, and everything should be handled in class slots. Note that one instance of QNetworkAccessManager is limited to four simultaneous connections.