From c62fa6c187285713c41735ffa0c3f8a996671d73 Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <noreply@fakecake.org>
Date: Fri, 19 Oct 2018 13:44:18 +0300
Subject: cover: add last-modified

---
 backend.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/backend.php b/backend.php
index 7fb610e..4f4b402 100644
--- a/backend.php
+++ b/backend.php
@@ -40,6 +40,8 @@
 				header("Content-type: " . mime_content_type($filename));
 				header('Cache-control: max-age=' . STATIC_EXPIRES);
 				header("Expires: " . gmdate("D, d M Y H:i:s \G\M\T", time()+STATIC_EXPIRES));
+				header("Last-Modified: " .
+					gmdate("D, d M Y H:i:s \G\M\T", filemtime($filename)));
 
 				readfile($filename);
 			} else {
-- 
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