fix: #86ew03681 Update Nginx configuration for API proxy handling

- Modified the `proxy_pass` directive to include query string parameters for better request handling.
- Updated the `Connection` header to use a variable for improved flexibility.
- Enabled `proxy_request_buffering` to ensure proper request processing for large files.

Author: navidshad

nginx/default.conf

@@ -60,14 +60,14 @@ server {
 	# Proxy API requests to server service
 	# Strip /api prefix when forwarding to server
 	location ~ ^/api(/.*)$ {
-		proxy_pass http://server:8081$1;
+		proxy_pass http://server:8081$1$is_args$args;
 		proxy_http_version 1.1;
 		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 Upgrade $http_upgrade;
-		proxy_set_header Connection 'upgrade';
+		proxy_set_header Connection $connection_upgrade;
 		proxy_cache_bypass $http_upgrade;
 
 		# Increase timeouts for file uploads/downloads
@@ -77,7 +77,7 @@ server {
 
 		# Disable buffering for large files
 		proxy_buffering off;
-		proxy_request_buffering off;
+		proxy_request_buffering on;
 	}
 
 	# Serve admin panel static files

nginx/default.local.conf

@@ -31,14 +31,14 @@ server {
 	# Proxy API requests to server service
 	# Strip /api prefix when forwarding to server
 	location ~ ^/api(/.*)$ {
-		proxy_pass http://server:8081$1;
+		proxy_pass http://server:8081$1$is_args$args;
 		proxy_http_version 1.1;
 		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 Upgrade $http_upgrade;
-		proxy_set_header Connection 'upgrade';
+		proxy_set_header Connection $connection_upgrade;
 		proxy_cache_bypass $http_upgrade;
 
 		# Increase timeouts for file uploads/downloads
@@ -48,7 +48,7 @@ server {
 
 		# Disable buffering for large files
 		proxy_buffering off;
-		proxy_request_buffering off;
+		proxy_request_buffering on;
 	}
 
 	# Handle admin root without trailing slash

nginx/nginx.conf

@@ -11,6 +11,12 @@ http {
     # Resolver for Docker service name resolution (required when using variables in proxy_pass)
     resolver 127.0.0.11 valid=30s;
 
+    # Map for Upgrade/Connection headers
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        ''      close;
+    }
+
     include /etc/nginx/mime.types;
     default_type application/octet-stream;