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Reduce CPU usage from background PC polling

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This commit is contained in:
Cameron Gutman
2025-10-19 20:50:29 -05:00
parent 4bbd02fb2d
commit 3f8f4744c5
3 changed files with 34 additions and 25 deletions
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33
app/backend/nvhttp.cpp
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@@ -18,7 +18,8 @@
#define RESUME_TIMEOUT_MS 30000
#define QUIT_TIMEOUT_MS 30000
NvHTTP::NvHTTP(NvAddress address, uint16_t httpsPort, QSslCertificate serverCert) :
NvHTTP::NvHTTP(NvAddress address, uint16_t httpsPort, QSslCertificate serverCert, QNetworkAccessManager* nam) :
m_Nam(nam ? nam : new QNetworkAccessManager(this)),
m_ServerCert(serverCert)
{
m_BaseUrlHttp.setScheme("http");
@@ -29,13 +30,11 @@ NvHTTP::NvHTTP(NvAddress address, uint16_t httpsPort, QSslCertificate serverCert
// Never use a proxy server
QNetworkProxy noProxy(QNetworkProxy::NoProxy);
m_Nam.setProxy(noProxy);
connect(&m_Nam, &QNetworkAccessManager::sslErrors, this, &NvHTTP::handleSslErrors);
m_Nam->setProxy(noProxy);
}
NvHTTP::NvHTTP(NvComputer* computer) :
NvHTTP(computer->activeAddress, computer->activeHttpsPort, computer->serverCert)
NvHTTP::NvHTTP(NvComputer* computer, QNetworkAccessManager* nam) :
NvHTTP(computer->activeAddress, computer->activeHttpsPort, computer->serverCert, nam)
{
}
@@ -492,15 +491,15 @@ NvHTTP::openConnection(QUrl baseUrl,
request.setAttribute(QNetworkRequest::Http2AllowedAttribute, false);
#endif
#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);
QT_WARNING_POP
#if QT_VERSION >= QT_VERSION_CHECK(6, 3, 0)
// Use fine-grained idle timeouts to avoid calling QNetworkAccessManager::clearAccessCache(),
// which tears down the NAM's global thread each time. We must not keep persistent connections
// or GFE will puke.
request.setAttribute(QNetworkRequest::ConnectionCacheExpiryTimeoutSecondsAttribute, 0);
#endif
QNetworkReply* reply = m_Nam.get(request);
auto sslErrorsConnection = connect(m_Nam, &QNetworkAccessManager::sslErrors, this, &NvHTTP::handleSslErrors);
QNetworkReply* reply = m_Nam->get(request);
// Run the request with a timeout if requested
QEventLoop loop;
@@ -523,9 +522,11 @@ NvHTTP::openConnection(QUrl baseUrl,
reply->abort();
}
// We must clear out cached authentication and connections or
// GFE will puke next time
m_Nam.clearAccessCache();
#if QT_VERSION < QT_VERSION_CHECK(6, 3, 0)
// If we couldn't use fine-grained connection idle timeouts, kill them all now
m_Nam->clearAccessCache();
#endif
disconnect(sslErrorsConnection);
// Handle error
if (reply->error() != QNetworkReply::NoError)