fix: #86ew03681 Update X-Forwarded-Proto handling in Nginx configuration

- Changed the value of the `X-Forwarded-Proto` header to use `$proxy_x_forwarded_proto` instead of `$scheme` in multiple server blocks across `default.conf` and `default.local.conf`.
- Added a mapping in `nginx.conf` to correctly handle `X-Forwarded-Proto` from proxies like Cloudflare, ensuring proper protocol forwarding.

Author: navidshad

nginx/default.conf

@@ -42,7 +42,7 @@ server {
 	proxy_set_header Host $host;
 	proxy_set_header X-Real-IP $remote_addr;
 	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-	proxy_set_header X-Forwarded-Proto $scheme;
+	proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 	proxy_set_header X-Forwarded-Host $host;
 	proxy_set_header X-Forwarded-Port $server_port;
 
@@ -64,7 +64,7 @@ server {
 		proxy_set_header Host $host;
 		proxy_set_header X-Real-IP $remote_addr;
 		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-		proxy_set_header X-Forwarded-Proto $scheme;
+		proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 		proxy_set_header X-Forwarded-Host $host;
 		proxy_set_header X-Forwarded-Prefix /api;
 		proxy_set_header Upgrade $http_upgrade;
@@ -101,7 +101,7 @@ server {
 		proxy_set_header Host $host;
 		proxy_set_header X-Real-IP $remote_addr;
 		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-		proxy_set_header X-Forwarded-Proto $scheme;
+		proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 		proxy_set_header X-Forwarded-Host $host;
 		proxy_set_header X-Forwarded-Port $server_port;
 		proxy_set_header Upgrade $http_upgrade;

nginx/default.local.conf

@@ -13,7 +13,7 @@ server {
 	proxy_set_header Host $host;
 	proxy_set_header X-Real-IP $remote_addr;
 	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-	proxy_set_header X-Forwarded-Proto $scheme;
+	proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 	proxy_set_header X-Forwarded-Host $host;
 	proxy_set_header X-Forwarded-Port $server_port;
 
@@ -35,7 +35,7 @@ server {
 		proxy_set_header Host $host;
 		proxy_set_header X-Real-IP $remote_addr;
 		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-		proxy_set_header X-Forwarded-Proto $scheme;
+		proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 		proxy_set_header X-Forwarded-Host $host;
 		proxy_set_header X-Forwarded-Prefix /api;
 		proxy_set_header Upgrade $http_upgrade;
@@ -77,7 +77,7 @@ server {
 		proxy_set_header Host $host;
 		proxy_set_header X-Real-IP $remote_addr;
 		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-		proxy_set_header X-Forwarded-Proto $scheme;
+		proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
 		proxy_set_header X-Forwarded-Host $host;
 		proxy_set_header X-Forwarded-Port $server_port;
 		proxy_set_header Upgrade $http_upgrade;

nginx/nginx.conf

@@ -33,6 +33,12 @@ http {
     gzip_comp_level 6;
     gzip_types text/plain text/css text/xml text/javascript application/json application/javascript application/xml+rss application/rss+xml font/truetype font/opentype application/vnd.ms-fontobject image/svg+xml;
 
+    # Map to correctly handle X-Forwarded-Proto from Cloudflare or other proxies
+    map $http_x_forwarded_proto $proxy_x_forwarded_proto {
+        default $http_x_forwarded_proto;
+        ''      $scheme;
+    }
+
     include /etc/nginx/conf.d/*.conf;
 }