service-worker strategy changed to network first

Pages/CaritasServiceFundVeloFoundKeyDataPage.razor.cs

             if (addressDto == null) {
                 this.bicycleGeoPosition.Latitude = ReportDataProvider.GetFoundReport().GeographicInfo.Latitude;
                 this.bicycleGeoPosition.Longitude = ReportDataProvider.GetFoundReport().GeographicInfo.Longitude;
-                addressDto =await NominatimService.GetAddressForCoordinates(this.bicycleGeoPosition.Latitude, this.bicycleGeoPosition.Longitude);
+                addressDto = await NominatimService.GetAddressForCoordinates(this.bicycleGeoPosition.Latitude, this.bicycleGeoPosition.Longitude);
             }
             return GetFormattedAddressZipAndTown(addressDto);
         }

Shared/Services/BicycleRestService.cs

             return response;
         }
 
-        
+
     }
 }

Shared/Services/IBicycleRestService.cs

 
         Task<ReportResponse> SendFoundReport(Report report);
 
-        Task<ReportResponse> SendFoundReport(FoundReportRepositoryItem reportRepositoryItem); 
+        Task<ReportResponse> SendFoundReport(FoundReportRepositoryItem reportRepositoryItem);
 
         Task<ReportResponse> SendMissingReport(Report report);
 

wwwroot/service-worker.js

     'https://fonts.gstatic.com/s/roboto/v27/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2',
     'https://fonts.gstatic.com/s/roboto/v27/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2',
     'https://fonts.gstatic.com/s/materialicons/v85/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2',
+    'https://fonts.gstatic.com/s/ubuntu/v15/4iCv6KVjbNBYlgoCxCvjsGyNPYZvgw.woff2',
     'appsettings.json',
     'manifest.json'
 ];
             console.log('caching app assets');
             cache.addAll(assets);
         })
-    );
+    )
+    self.skipWaiting();
 });
 
 // activate event
             console.log('Now ready to handle fetches!');
         })
     );
+    self.clients.claim();
 });
 
-// fetch events (appsettings are always first fetched from network)
-self.addEventListener('fetch', event => {
-    if (event.request.url.endsWith(appsettings_url)) {
-        fetch(event.request).then(function (response) {
-            return caches.open(staticCacheName).then(function (cache) {
-                console.log('update cache');
-                cache.put(event.request, response.clone());
-                return response;
-            });
-        }).catch(function () {
-            return useFallback();
-        });
-    } else {
-        event.respondWith(
-            caches.match(event.request).then(cacheRes => {
-                return cacheRes || fetch(event.request);
-            })
-        );
-    }
+// fetch events (Network first strategy, no cache update after install)
+self.addEventListener('fetch', function (event) {
+    event.respondWith(fromNetwork(event.request, 6000).catch(function () {
+        return fromCache(event.request);
+    }));
 });
 
-function useFallback() {
-    return Promise.resolve(new Response(Appsettings_Fallback, {
-        headers: {
-            'Content-Type': 'application/json'
-        }
-    }));
+function fromNetwork(request, timeout) {
+    return new Promise(function (fulfill, reject) {
+        var timeoutId = setTimeout(reject, timeout);
+        fetch(request).then(function (response) {
+            clearTimeout(timeoutId);
+            fulfill(response);
+        }, reject);
+    });
 }
 
-var Appsettings_Fallback = {
-    "host_base_url": "https://integrate.dynalias.net:9443/Fundvelo/",
-    "subresource_url_colors": "api/{0}/{1}/fundvelo/colors",
-    "subresource_url_brands": "api/{0}/{1}/fundvelo/brands",
-    "subresource_url_types": "api/{0}/{1}/fundvelo/types",
-    "subresource_url_foundreport": "api/{0}/{1}/fundvelo/fundmeldung",
-    "subresource_url_missingreport": "api/{0}/{1}/fundvelo/suchauftrag"
-}
+function fromCache(request) {
+    return caches.open(staticCacheName).then(function (cache) {
+        return cache.match(request).then(function (matching) {
+            return matching || Promise.reject('no-match');
+        });
+    });
+}
+
+