diff --git a/core/includes/file.inc b/core/includes/file.inc
index 5f54190..4f8a770 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.
@@ -1302,28 +1302,6 @@ 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, $headers);
-}
-
-/**
  * Page callback: Handles private file transfers.
  *
  * Call modules that implement hook_file_download() to find out if a file is
@@ -1351,7 +1329,7 @@ function file_download() {
       }
     }
     if (count($headers)) {
-      return file_transfer($uri, $headers);
+      return new BinaryFileResponse($uri, 200, $headers);
     }
     throw new AccessDeniedHttpException();
   }
diff --git a/core/lib/Drupal/Core/StreamWrapper/LocalStream.php b/core/lib/Drupal/Core/StreamWrapper/LocalStream.php
index f84ecb1..c0f727c 100644
--- a/core/lib/Drupal/Core/StreamWrapper/LocalStream.php
+++ b/core/lib/Drupal/Core/StreamWrapper/LocalStream.php
@@ -339,6 +339,24 @@ public function stream_close() {
   }
 
   /**
+   * Signal that stream_select is not supported by returning false.
+   *
+   * Fixes warnings messages like this:
+   *   finfo::file() [finfo.file]: Drupal\Core\StreamWrapper\PrivateStream::stream_cast is not implemented!
+   *     
+   * @param int
+   *   Can be STREAM_CAST_FOR_SELECT or STREAM_CAST_AS_STREAM
+   *
+   * @return bool false
+   *
+   * @see http://drupal.org/node/1561362
+   * @see: http://php.net/manual/en/streamwrapper.stream-cast.php
+   */
+  public function stream_cast(int $cast_as) {
+    return false;
+  }
+
+  /**
    * Support for unlink().
    *
    * @param string $uri
diff --git a/core/modules/image/image.module b/core/modules/image/image.module
index b2816de..7be1abd 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;
@@ -669,7 +669,7 @@ 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' => $derivative_uri));
diff --git a/core/modules/image/lib/Drupal/image/Tests/ImageStylesPathAndUrlTest.php b/core/modules/image/lib/Drupal/image/Tests/ImageStylesPathAndUrlTest.php
index f755ba0..987be11 100644
--- a/core/modules/image/lib/Drupal/image/Tests/ImageStylesPathAndUrlTest.php
+++ b/core/modules/image/lib/Drupal/image/Tests/ImageStylesPathAndUrlTest.php
@@ -150,7 +150,8 @@ function _testImageStyleUrlAndPath($scheme, $clean_url = TRUE, $extra_slash = FA
     $this->assertEqual($this->drupalGetHeader('Content-Length'), $generated_image_info['file_size'], 'Expected Content-Length was reported.');
     if ($scheme == 'private') {
       $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
-      $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'no-cache, private', 'Cache-Control header was set to prevent caching.');
+      // Checking that the 'Cache-Control' header contains 'no-cache'
+      $this->assertNotEqual(strpos($this->drupalGetHeader('Cache-Control'), 'no-cache'), FALSE, 'Cache-Control header was set to prevent caching.');
       $this->assertEqual($this->drupalGetHeader('X-Image-Owned-By'), 'image_module_test', 'Expected custom header has been added.');
 
       // Make sure that a second request to the already existing derivate works
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 1f88fe9..edc7aa4 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);
 }
 
 /**