Hello!

On Wed, Oct 04, 2017 at 02:39:35AM -0400, akmanocha wrote:

> Hi,
>
> I am getting a strange error while using nginx as reverse proxy.
>
> From my upstream I get a response like in acess logs -
>
> {"time": "2017-10-04T11:51:37+05:30", "remote_addr": "52.76.220.40",
> "remote_user": "-", "body_bytes_sent": "0", "request_time": "0.002",
> "status": "463", "request": "GET / HTTP/1.1", "request_method": "GET",
> "request_header": "-", "request_body": "-", "http_referer": "-",
> "http_user_agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36
> (KHTML, like Gecko) Chrome/36.0.1985.67 Safari/537.36", "application":
> "nb-qa-nearbuy-nginx", "xforwarder": "52.76.85.66, 52.76.85.66,
> 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40,
> 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40,
> 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40,
> 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40,
> 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40, 52.76.220.40,
> 52.76.220.40, 52.76.220.40, 52.76.220.40,
> 52.76.220.40","host":"www.iwanto.in","http_HEADER":"-"}
>
> No logs in error logs-
>
> Could not find anything on net about status code 463
> Looks like an issue with xforwarder has some issues? Why so many repeated
> IPs? Has anybody else encountered the same issues?

nginx itself never returns 463, it is something non-standard
likely returned by your backend.

--
Maxim Dounin
http://nginx.org/
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