Nginx - adding cross-origin resource sharing (CORS) support to reverse proxied APIs
Example Nginx configuration for adding cross-origin resource sharing (CORS) support to reverse proxied APIs.
server {
listen 80;
listen [::]:80;
server_name sub.duyet.net;
location / {
// ADD THIS ABOVE ========================================
set $cors '';
if ($http_origin ~* 'https?://(localhost|.*.duyet\.net)') {
set $cors 'true';
}
if ($cors = 'true') {
add_header 'Access-Control-Allow-Origin' '*';
add_header 'Access-Control-Allow-Credentials' 'true';
add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
add_header 'Access-Control-Allow-Headers' 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type';
}
// ======================================================
proxy_pass http://192.168.26.22:9090;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_cache_bypass $http_upgrade;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
This config will add CORS support for all request from localhost and sub.duyet.net