If a network request error occurs while reading the streamed GML, the…

…n return a failure status from the getFeatures method

src/core/qgsgml.cpp

@@ -128,9 +128,22 @@ int QgsGml::getFeatures( const QString& uri, QGis::WkbType* wkbType, QgsRectangl
     QCoreApplication::processEvents();
   }
 
+  QNetworkReply::NetworkError replyError = reply->error();
+  QString replyErrorString = reply->errorString();
+
   delete reply;
   delete progressDialog;
 
+  if ( replyError )
+  {
+    QgsMessageLog::logMessage(
+      tr( "GML Getfeature network request failed with error: %1" ).arg( replyErrorString ),
+      tr( "Network" ),
+      QgsMessageLog::CRITICAL
+    );
+    return 1;
+  }
+
   if ( *mWkbType != QGis::WKBNoGeometry )
   {
     if ( mExtent.isEmpty() )