verify nginx proxy_pass result code example
Example: nginx proxy pass
location /path/to/service/ {
proxy_pass http://127.0.0.1:8081/;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}