more information in cae of network error

src/networkaccessmanager.hxx

@@ -8,6 +8,7 @@
 #define __NETWORKACCESS_MANAGER_HXX__
 
 #include <QNetworkAccessManager>
+#include <QNetworkReply>
 #include <QNetworkConfiguration>
 #include <QNetworkProxy>
 
@@ -180,7 +181,15 @@ class NetworkAccessManager: public QNetworkAccessManager {
         case QNetworkAccessManager::CustomOperation: break;
         case QNetworkAccessManager::UnknownOperation: break;
       }
-      return QNetworkAccessManager::createRequest(op, req, outgoingData);
+      QNetworkReply* reply
+        (QNetworkAccessManager::createRequest(op, req, outgoingData));
+      connect(reply, SIGNAL(encrypted()), SLOT(encryptedLog()));
+      connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),
+              SLOT(errorLog(QNetworkReply::NetworkError)));
+      connect(reply, SIGNAL(finished()), SLOT(finishedLog()));
+      connect(reply, SIGNAL(sslErrors(const QList<QSslError>&)),
+              SLOT(sslErrorsLog(const QList<QSslError>&)));
+      return reply;
     }
   protected Q_SLOTS:
     QStringList supportedSchemesImplementation() const {
@@ -188,12 +197,22 @@ class NetworkAccessManager: public QNetworkAccessManager {
       return QNetworkAccessManager::supportedSchemesImplementation();
     }
   private Q_SLOTS:
+    void errorLog(QNetworkReply::NetworkError) {
+      log("**** Network Error: "
+          + dynamic_cast<QNetworkReply*>(sender())->errorString());
+    }
     void authenticationRequiredLog(QNetworkReply*, QAuthenticator*) {
       //log(__PRETTY_FUNCTION__);
     }
+    void encryptedLog() {
+      //log(__PRETTY_FUNCTION__);
+    }
     void encryptedLog(QNetworkReply*) {
       //log(__PRETTY_FUNCTION__);
     }
+    void finishedLog() {
+      //log(__PRETTY_FUNCTION__);
+    }
     void finishedLog(QNetworkReply*) {
       //log(__PRETTY_FUNCTION__);
     }
@@ -204,6 +223,10 @@ class NetworkAccessManager: public QNetworkAccessManager {
     void proxyAuthenticationRequiredLog(const QNetworkProxy&, QAuthenticator*) {
       //log(__PRETTY_FUNCTION__);
     }
+    void sslErrorsLog(const QList<QSslError>& errors) {
+      Q_FOREACH(const QSslError& error, errors) 
+        log("**** SSL-Error: "+error.errorString());
+    }
     void sslErrorsLog(QNetworkReply*, const QList<QSslError>&) {
       //log(__PRETTY_FUNCTION__);
     }