吐出 304 還是要補上 etag 才能讓 file api 判斷是否該撈取新的圖片

Author: FreedomKnight

src/FileEntry.php

@@ -72,7 +72,11 @@ public function response($filename)
                     ->setPublic();
             }
 
-            return response(null, 304)->setPublic();
+            return response(null, 304)
+                ->setEtag($etag)
+                ->setLastModified(new \DateTime($time))
+                ->setExpires(new \DateTime($expires))
+                ->setPublic();
         } catch (FileNotFoundException $e) {
             abort(404);
         } catch (\Illuminate\Contracts\Filesystem\FileNotFoundException $e) {