From 7b7596167a60cd7ca6db7fc59bcadb8b478f8328 Mon Sep 17 00:00:00 2001
From: jellykells <42573508+jellykells@users.noreply.github.com>
Date: Thu, 23 Dec 2021 21:36:21 -0600
Subject: [PATCH] add support for x-forwarded-proto header

---
 core/util.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/util.php b/core/util.php
index e0a26af7..8b20139d 100644
--- a/core/util.php
+++ b/core/util.php
@@ -65,6 +65,10 @@ function contact_link(): ?string
  */
 function is_https_enabled(): bool
 {
+    // check forwarded protocol
+    if ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') {
+        $_SERVER['HTTPS']='on';
+    }
     return (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
 }