diff --git a/core/includes/gettext.inc b/core/includes/gettext.inc
index 4e3b221..1ea55c5 100644
--- a/core/includes/gettext.inc
+++ b/core/includes/gettext.inc
@@ -7,6 +7,8 @@
  * @todo Decouple these functions from Locale API and put to gettext_ namespace.
  */
 
+use Symfony\Component\HttpFoundation\Response;
+
 /**
  * @defgroup locale-api-import-export Translation import/export API.
  * @{
@@ -1056,10 +1058,11 @@ function _locale_export_po($language = NULL, $output = NULL) {
     watchdog('locale', 'Exported translation file: %filename.', array('%filename' => $filename));
   }
   // Download the file for the client.
-  header("Content-Disposition: attachment; filename=$filename");
-  header("Content-Type: text/plain; charset=utf-8");
-  print $output;
-  drupal_exit();
+  $headers = array(
+    'Content-Disposition' => "attachment; filename=$filename",
+    'Content-Type' => 'text/plain; charset=utf-8',
+  );
+  return new Response($output, 200, $headers);
 }
 
 /**
diff --git a/core/includes/install.inc b/core/includes/install.inc
index 1ebfb21..d0aadb6 100644
--- a/core/includes/install.inc
+++ b/core/includes/install.inc
@@ -1,5 +1,6 @@
 <?php
 
+use Symfony\Component\HttpFoundation\RedirectResponse;
 use Drupal\Core\Database\Database;
 use Drupal\Core\Config\FileStorage;
 
@@ -630,9 +631,10 @@ function drupal_install_fix_file($file, $mask, $message = TRUE) {
 function install_goto($path) {
   global $base_url;
   include_once DRUPAL_ROOT . '/core/includes/common.inc';
-  header('Location: ' . $base_url . '/' . $path);
-  header('Cache-Control: no-cache'); // Not a permanent redirect.
-  drupal_exit();
+  $headers = array(
+    'Cache-Control' => 'no-cache', // Not a permanent redirect.
+  );
+  return new RedirectResponse($base_url . '/' . $path, 302, $headers);
 }
 
 /**
diff --git a/core/includes/xmlrpcs.inc b/core/includes/xmlrpcs.inc
index 118f652..878f0e5 100644
--- a/core/includes/xmlrpcs.inc
+++ b/core/includes/xmlrpcs.inc
@@ -5,6 +5,9 @@
  * Provides API for defining and handling XML-RPC requests.
  */
 
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;
+
 /**
  * Invokes XML-RPC methods on this server.
  *
@@ -63,8 +66,8 @@ function xmlrpc_server($callbacks) {
 
   $data = file_get_contents('php://input');
   if (!$data) {
-    print 'XML-RPC server accepts POST requests only.';
-    drupal_exit();
+    $allowed_methods = array('POST');
+    throw new MethodNotAllowedHttpException($allowed_methods);
   }
   $xmlrpc_server->message = xmlrpc_message($data);
   if (!xmlrpc_message_parse($xmlrpc_server->message)) {
@@ -123,10 +126,11 @@ function xmlrpc_server_error($error, $message = FALSE) {
  */
 function xmlrpc_server_output($xml) {
   $xml = '<?xml version="1.0"?>' . "\n" . $xml;
-  drupal_add_http_header('Content-Length', strlen($xml));
-  drupal_add_http_header('Content-Type', 'text/xml');
-  echo $xml;
-  drupal_exit();
+  $headers = array(
+    'Content-Length' => strlen($xml),
+    'Content-Type' => 'text/xml',
+  );
+  return new Response($headers, $xml);
 }
 
 /**
diff --git a/core/modules/dashboard/dashboard.module b/core/modules/dashboard/dashboard.module
index 889af83..267c6b9 100644
--- a/core/modules/dashboard/dashboard.module
+++ b/core/modules/dashboard/dashboard.module
@@ -5,6 +5,8 @@
  * Provides a dashboard page in the administrative interface.
  */
 
+use Symfony\Component\HttpFoundation\Response;
+
 /**
  * Implements hook_help().
  */
@@ -511,8 +513,7 @@ function dashboard_show_disabled() {
   }
 
   // Theme the output and end the page request.
-  print theme('dashboard_disabled_blocks', array('blocks' => $blocks));
-  drupal_exit();
+  return new Response(theme('dashboard_disabled_blocks', array('blocks' => $blocks)));
 }
 
 /**
@@ -540,8 +541,7 @@ function dashboard_show_block_content($module, $delta) {
   $blocks[$module . "_" . $delta] = $block_object;
   $build = _block_get_renderable_region($blocks);
   $rendered_block = drupal_render($build);
-  print $rendered_block;
-  drupal_exit();
+  return new Response($rendered_block);
 }
 
 /**
@@ -585,7 +585,7 @@ function dashboard_update() {
     }
     drupal_set_message(t('The configuration options have been saved.'), 'status', FALSE);
   }
-  drupal_exit();
+  return new Response();
 }
 
 /**
diff --git a/core/modules/image/image.module b/core/modules/image/image.module
index 905e6a7..89a5186 100644
--- a/core/modules/image/image.module
+++ b/core/modules/image/image.module
@@ -8,6 +8,7 @@
 use Symfony\Component\HttpFoundation\Response;
 use Symfony\Component\HttpFoundation\StreamedResponse;
 use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Drupal\Core\File\File;
 
 /**
@@ -676,7 +677,7 @@ function image_style_options($include_empty = TRUE) {
 function image_style_deliver($style, $scheme) {
   // Check that the style is defined and the scheme is valid.
   if (!$style || !file_stream_wrapper_valid_scheme($scheme)) {
-    drupal_exit();
+    throw new NotFoundHttpException();
   }
 
   $args = func_get_args();
@@ -714,10 +715,8 @@ function image_style_deliver($style, $scheme) {
     if (!$lock_acquired) {
       // Tell client to retry again in 3 seconds. Currently no browsers are known
       // to support Retry-After.
-      drupal_add_http_header('Status', '503 Service Unavailable');
-      drupal_add_http_header('Retry-After', 3);
-      print t('Image generation in progress. Try again shortly.');
-      drupal_exit();
+      $headers = array('Retry-After' => 3);
+      return new Response(t('Image generation in progress. Try again shortly.'), 503, $headers);
     }
   }
 
diff --git a/core/modules/openid/openid.inc b/core/modules/openid/openid.inc
index 518dc8a..b0eb97b 100644
--- a/core/modules/openid/openid.inc
+++ b/core/modules/openid/openid.inc
@@ -5,6 +5,8 @@
  * OpenID utility functions.
  */
 
+use Symfony\Component\HttpFoundation\RedirectResponse;
+
 /**
  * Diffie-Hellman Key Exchange Default Value.
  *
@@ -74,9 +76,7 @@ function openid_redirect_http($url, $message) {
   }
 
   $sep = (strpos($url, '?') === FALSE) ? '?' : '&';
-  header('Location: ' . $url . $sep . implode('&', $query), TRUE, 302);
-
-  drupal_exit();
+  return new RedirectResponse($url . $sep . implode('&', $query), 302);
 }
 
 /**
@@ -97,9 +97,8 @@ function openid_redirect($url, $message) {
   $output .= '<script type="text/javascript">document.getElementById("openid-redirect-form").submit();</script>' . "\n";
   $output .= "</body>\n";
   $output .= "</html>\n";
-  print $output;
 
-  drupal_exit();
+  return new Response($output);
 }
 
 function openid_redirect_form($form, &$form_state, $url, $message) {
diff --git a/core/modules/overlay/overlay.module b/core/modules/overlay/overlay.module
index 7fb7e0b..2271536 100644
--- a/core/modules/overlay/overlay.module
+++ b/core/modules/overlay/overlay.module
@@ -580,8 +580,7 @@ function overlay_page_delivery_callback_alter(&$callback) {
  */
 function overlay_deliver_empty_page() {
   $empty_page = '<html><head><title></title>' . drupal_get_css() . drupal_get_js() . '</head><body class="overlay"></body></html>';
-  print $empty_page;
-  drupal_exit();
+  return new Response($empty_page);
 }
 
 /**
diff --git a/core/modules/system/system.admin.inc b/core/modules/system/system.admin.inc
index f34c766..dd98d75 100644
--- a/core/modules/system/system.admin.inc
+++ b/core/modules/system/system.admin.inc
@@ -2292,8 +2292,7 @@ function system_run_cron() {
  * Menu callback: return information about PHP.
  */
 function system_php() {
-  phpinfo();
-  drupal_exit();
+  return phpinfo();
 }
 
 /**