QNetworkReply and QNetworkAccessManager timeout in http request - c++

Question

How do I setup a timeout when I do an http request?
I have this code:
{
QNetworkRequest request;
request.setUrl(QUrl("http://www.foo.com"));
request.setRawHeader("User-Agent", USER_AGENT.toUtf8());
request.setRawHeader("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
request.setRawHeader("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
request.setRawHeader("Accept-Language", "en-us,en;q=0.5");
request.setRawHeader("Connection", "Keep-Alive");
reply = m_networkManager->get(request);
QEventLoop loop;
connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
loop.exec();
}
Where and how do I setup some kind of timeout to the request?

Answer 1

QTimer timer;
timer.setSingleShot(true);
QEventLoop loop;
connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
timer.start(30000); // 30 secs. timeout
loop.exec();
if(timer.isActive()) {
timer.stop();
if(m_reply->error() > 0) {
... // handle error
}
else {
int v = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (v >= 200 && v < 300) { // Success
...
}
}
} else {
// timeout
disconnect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
reply->abort();
}

Answer 2

check this out:
https://doc.qt.io/qt-5/qnetworkrequest.html#setTransferTimeout
void QNetworkRequest::setTransferTimeout(int timeout =
DefaultTransferTimeoutConstant) Sets timeout as the transfer timeout
in milliseconds.
Transfers are aborted if no bytes are transferred before the timeout
expires. Zero means no timer is set. If no argument is provided, the
timeout is QNetworkRequest::DefaultTransferTimeoutConstant. If this
function is not called, the timeout is disabled and has the value
zero.
This function was introduced in Qt 5.15.