Handling CORS with Reverse Proxies

In setups involving reverse proxies (e.g., Nginx, Apache), CORS headers might need to be managed at both the application and proxy levels.

• Nginx Example:

location /api { proxy_pass http://backend; add_header Access-Control-Allow-Origin http://example.com; add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS'; add_header Access-Control-Allow-Headers 'Content-Type, Authorization'; }

• Apache Example:

<IfModule mod_headers.c> Header set Access-Control-Allow-Origin "http://example.com" Header set Access-Control-Allow-Methods "GET, POST, OPTIONS" Header set Access-Control-Allow-Headers "Content-Type, Authorization" </IfModule>