diff --git a/core/includes/file.inc b/core/includes/file.inc
index 534d211..cbeb8a7 100644
--- a/core/includes/file.inc
+++ b/core/includes/file.inc
@@ -9,7 +9,7 @@
 use Drupal\Component\PhpStorage\MTimeProtectedFastFileStorage;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
-use Symfony\Component\HttpFoundation\StreamedResponse;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
 
 /**
  * Stream wrapper bit flags that are the basis for composite types.
@@ -1306,28 +1306,6 @@ function file_unmanaged_save_data($data, $destination = NULL, $replace = FILE_EX
 }
 
 /**
- * Transfers a file to the client using HTTP.
- *
- * Pipes a file through Drupal to the client.
- *
- * @param $uri
- *   String specifying the file URI to transfer.
- * @param $headers
- *   An array of HTTP headers to send along with file.
- */
-function file_transfer($uri, $headers) {
-  return new StreamedResponse(function() use ($uri) {
-    // Transfer file in 1024 byte chunks to save memory usage.
-    if (file_exists($uri) && $fd = fopen($uri, 'rb')) {
-      while (!feof($fd)) {
-        print fread($fd, 1024);
-      }
-      fclose($fd);
-    }
-  }, 200, $headers);
-}
-
-/**
  * Page callback: Handles private file transfers.
  *
  * Call modules that implement hook_file_download() to find out if a file is
@@ -1355,7 +1333,7 @@ function file_download() {
       }
     }
     if (count($headers)) {
-      return file_transfer($uri, $headers);
+      return new BinaryFileResponse($uri, 200, $headers);
     }
     throw new AccessDeniedHttpException();
   }
diff --git a/core/modules/image/image.module b/core/modules/image/image.module
index d7b02d0..f6b5eda 100644
--- a/core/modules/image/image.module
+++ b/core/modules/image/image.module
@@ -6,7 +6,7 @@
  */
 
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpFoundation\StreamedResponse;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
 use Drupal\Component\Uuid\Uuid;
 use Drupal\file\Plugin\Core\Entity\File;
@@ -655,7 +655,7 @@ function image_style_deliver($style, $scheme) {
       'Content-Type' => $image->info['mime_type'],
       'Content-Length' => $image->info['file_size'],
     );
-    return file_transfer($uri, $headers);
+    return new BinaryFileResponse($uri, 200, $headers);
   }
   else {
     watchdog('image', 'Unable to generate the derived image located at %path.', array('%path' => $derivative_uri));
diff --git a/core/modules/update/tests/modules/update_test/update_test.module b/core/modules/update/tests/modules/update_test/update_test.module
index 078bcf5..91a5ac9 100644
--- a/core/modules/update/tests/modules/update_test/update_test.module
+++ b/core/modules/update/tests/modules/update_test/update_test.module
@@ -1,7 +1,7 @@
 <?php
 
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpFoundation\StreamedResponse;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
 
 /**
  * @file
@@ -101,8 +101,8 @@ function update_test_update_status_alter(&$projects) {
  *   The project short name the update manager is trying to fetch data for (the
  *   fetch URLs are of the form: [base_url]/[project_name]/[core_version]).
  *
- * @return StreamedResponse|Response
- *   A StreamedResponse object containing the content of the XML release file
+ * @return BinaryFileResponse|Response
+ *   A BinaryFileResponse object containing the content of the XML release file
  *   for the specified project if one is available; a Response object with no
  *   content otherwise.
  *
@@ -132,7 +132,7 @@ function update_test_mock_page($project_name) {
     // Return an empty response.
     return new Response('', 200, $headers);
   }
-  return file_transfer($file, $headers);
+  return new BinaryFileResponse($file, 200, $headers);
 }
 
 /**