From c7a281c78e8cf8d00a66f25554fb01eb9fb314ca Mon Sep 17 00:00:00 2001
From: Luc <stagiair@syrinx.nl>
Date: Tue, 7 Dec 2021 10:57:45 +0100
Subject: [PATCH] keep original proto header if exists

---
 config/root/etc/nginx/nginx.conf | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/config/root/etc/nginx/nginx.conf b/config/root/etc/nginx/nginx.conf
index 0912134..c9ef012 100644
--- a/config/root/etc/nginx/nginx.conf
+++ b/config/root/etc/nginx/nginx.conf
@@ -44,9 +44,16 @@ http {
     gzip_http_version 1.1;
     gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
 
+    # if x-forwarded-proto header is set to https keep the header
+    map $http_x_forwarded_proto $real_proto {
+        default "http";
+        "https" "https";
+    }
+
     server {
         listen 4848;
         listen [::]:4848;
+        server_name _;
 
         root /docs;
         index index.html;
@@ -54,12 +61,10 @@ http {
         proxy_buffers 32 4k;
         proxy_set_header Connection "";
 
-        server_name _;
-
         location / {
             proxy_pass http://127.0.0.1:8080;
             proxy_set_header Host localhost;
-            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-Proto $real_proto;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_redirect off;