rocketchat_ynh/conf/nginx.conf

location ^~ #LOCATION# {
  proxy_pass             http://localhost:#PORT##PATH#;
  proxy_http_version 1.1;
  proxy_set_header Upgrade $http_upgrade;
  proxy_set_header Connection "upgrade";
  proxy_set_header Host $http_host;

  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forward-Proto http;
  proxy_set_header X-Nginx-Proxy true;

  proxy_redirect off;
}