connection close on 500, 503, 502.

[newnovice]

Can i just do this: 

    error_page 404 =400;
    error_page 502 =500 @close_conns;
        location @close_conns {
            internal;
            keepalive_requests 0;
        }

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,254535,254546#msg-254546