set unknown content type (but still image) as fallback when unknown

perosb · perosb · commit e927072f816a · 2016-01-18T12:19:22.000+01:00
this.mimetype is always empty when getting from cache. use response from Azure instead
diff --git a/src/Plugins/ImageProcessor.Web/ImageProcessor.Web.Plugins.AzureBlobCache/AzureBlobCache.cs b/src/Plugins/ImageProcessor.Web/ImageProcessor.Web.Plugins.AzureBlobCache/AzureBlobCache.cs
@@ -381,11 +381,12 @@ public override void RewritePath(HttpContext context)
                         {
                             HttpResponse contextResponse = context.Response;
                             cachedStream.CopyTo(contextResponse.OutputStream);
+                            string contentType = response.ContentType;
 
                             // Mimetype can be null when returning from the cache.
                             ImageProcessingModule.SetHeaders(
                                 context,
-                                string.IsNullOrWhiteSpace(this.mimeType) ? contextResponse.ContentType : this.mimeType,
+                                string.IsNullOrWhiteSpace(contentType) ? "image/xyz" : contentType,
                                 null,
                                 this.MaxDays,
                                 response.StatusCode);
