Iterate current.json mirrors

Author: illwieckz

currentversionfetcher.cpp

@@ -31,10 +31,27 @@ CurrentVersionFetcher::CurrentVersionFetcher(QObject* parent) : QObject(parent),
     connect(manager_.get(), SIGNAL(finished(QNetworkReply*)), this, SLOT(reply(QNetworkReply*)));
 }
 
-void CurrentVersionFetcher::fetchCurrentVersion(QString url)
+static const QString versionMirrors[] = {
+    "https://cdn.unvanquished.net/",
+    "https://cdn.illwieckz.net/unvanquished/",
+    "https://webseed.unv.kangz.net/",
+    nullptr,
+};
+
+static const QString *versionMirror = &versionMirrors[0];
+
+void CurrentVersionFetcher::fetchCurrentVersion()
 {
-    QNetworkRequest request = QNetworkRequest(QUrl(url));
-    manager_->get(request);
+    static const QString versionFile = "current.json";
+
+    if (versionMirror)
+    {
+        QString versionURL = versionMirror + versionFile;
+        qDebug() << "Fetching" << versionURL;
+        QNetworkRequest request = QNetworkRequest(QUrl(versionURL));
+        manager_->get(request);
+        versionMirror++;
+    }
 }
 
 void ComponentVersionFetcher(QJsonObject jsonObject, QString componentSlug, QString componentSystem, QString *componentVersion, QString *componentUrl)
@@ -117,7 +134,12 @@ void CurrentVersionFetcher::reply(QNetworkReply* reply)
 
     if (reply->error() != QNetworkReply::NoError) {
         qDebug() << "CurrentVersionFetcher: network error";
-        emit onCurrentVersions(updaterVersion, updaterUrl, gameVersion, gameUrl, newsUrl);
+
+		if (versionMirror) {
+			fetchCurrentVersion();
+		} else {
+	        emit onCurrentVersions(updaterVersion, updaterUrl, gameVersion, gameUrl, newsUrl);
+		}
         return;
     }
 

currentversionfetcher.h

@@ -28,7 +28,7 @@ class CurrentVersionFetcher : public QObject
     Q_OBJECT
 public:
     explicit CurrentVersionFetcher(QObject *parent = nullptr);
-    void fetchCurrentVersion(QString url);
+    void fetchCurrentVersion();
 
 signals:
     void onCurrentVersions(QString updaterVersion, QString updaterUrl, QString gameVersion, QString gameUrl, QString newsUrl);

splashcontroller.cpp

@@ -48,7 +48,7 @@ void SplashController::checkForUpdate()
     connect(&fetcher_, SIGNAL(onCurrentVersions(QString, QString, QString, QString, QString)),
             this, SLOT(onCurrentVersions(QString, QString, QString, QString, QString)));
 
-    fetcher_.fetchCurrentVersion("https://cdn.unvanquished.net/current.json");
+    fetcher_.fetchCurrentVersion();
 }
 
 QString SplashController::gameUrl() const {