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Qt World Summit Conference App

 #include "cachingnetworkaccessmanager.h"

 #include "cachereply.h"

 #include <QNetworkCacheMetaData>

 CachingNetworkAccessManager::CachingNetworkAccessManager(QObject *parent) : QNetworkAccessManager(parent) {
   mUrlIgnoreList.append("https://felgo.com/qml-sources/qtws2019/QtWSVersionCheck-test.qml");
   mUrlIgnoreList.append("https://felgo.com/qml-sources/qtws2019/QtWSVersionCheck.qml");
   mUrlIgnoreList.append("https://felgo.com/qml-sources/qmldir");
 }

 QNetworkReply *CachingNetworkAccessManager::createRequest(QNetworkAccessManager::Operation op, const QNetworkRequest &req, QIODevice *outgoingData)
 {
   QNetworkCacheMetaData meta = cache()->metaData(req.url());
   if(meta.isValid() && !shouldIgnoreUrl(req.url().url())) {
     //cache contains URL -> return cache reply
     //TODO need to check for expiration date?
     return new CacheReply(cache()->data(req.url()), req, op, meta, this);
   } else {
     return QNetworkAccessManager::createRequest(op, req, outgoingData);
   }
 }

 bool CachingNetworkAccessManager::shouldIgnoreUrl(const QString &url)
 {
   return mUrlIgnoreList.contains(url);
 }

 void CachingNetworkAccessManager::clearIgnoredUrlsFromCache() {
   for(int i=0; i < mUrlIgnoreList.count(); i++) {
     QString url = mUrlIgnoreList.at(i);