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Delete the QNetworkAccessManager when we're done with it

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Apparently having this object around can lead to background
network scans happening that cause WiFi perf degradation.
This commit is contained in:
Cameron Gutman
2023-06-20 21:51:28 -05:00
parent e5aaa1fc53
commit df0c4c8208
6 changed files with 57 additions and 24 deletions
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25
app/settings/mappingfetcher.cpp
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@@ -4,26 +4,32 @@
#include <QNetworkReply>
MappingFetcher::MappingFetcher(QObject *parent) :
QObject(parent),
m_Nam(this)
QObject(parent)
{
m_Nam = new QNetworkAccessManager(this);
// Never communicate over HTTP
m_Nam.setStrictTransportSecurityEnabled(true);
m_Nam->setStrictTransportSecurityEnabled(true);
// Allow HTTP redirects
m_Nam.setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
m_Nam->setRedirectPolicy(QNetworkRequest::NoLessSafeRedirectPolicy);
connect(&m_Nam, &QNetworkAccessManager::finished,
connect(m_Nam, &QNetworkAccessManager::finished,
this, &MappingFetcher::handleMappingListFetched);
}
void MappingFetcher::start()
{
if (!m_Nam) {
Q_ASSERT(m_Nam);
return;
}
#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0) && QT_VERSION < QT_VERSION_CHECK(5, 15, 1) && !defined(QT_NO_BEARERMANAGEMENT)
// HACK: Set network accessibility to work around QTBUG-80947 (introduced in Qt 5.14.0 and fixed in Qt 5.15.1)
QT_WARNING_PUSH
QT_WARNING_DISABLE_DEPRECATED
m_Nam.setNetworkAccessible(QNetworkAccessManager::Accessible);
m_Nam->setNetworkAccessible(QNetworkAccessManager::Accessible);
QT_WARNING_POP
#endif
@@ -57,13 +63,18 @@ void MappingFetcher::start()
#endif
// We'll get a callback when this is finished
m_Nam.get(request);
m_Nam->get(request);
}
void MappingFetcher::handleMappingListFetched(QNetworkReply* reply)
{
Q_ASSERT(reply->isFinished());
// Delete the QNetworkAccessManager to free resources and
// prevent the bearer plugin from polling in the background.
m_Nam->deleteLater();
m_Nam = nullptr;
if (reply->error() == QNetworkReply::NoError) {
// Queue the reply for deletion
reply->deleteLater();