location /ping {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;

    proxy_pass http://unix:/tmp/$socket_name.socket:$request_uri;

    proxy_intercept_errors on;
    proxy_redirect off;
}
