upstream_response_time

[Gena Makhomed]

On 11.02.2014 11:04, Ruslan Ermilov wrote:

>> I am using
>>
>>      add_header x-responsetime $upstream_response_time;
>>
>> to report response times of the back-end to the client. I was
>> expecting to see the back-end response time (e.g. 0.500 for half a
>> second), however the headers that I am getting contain an epoch
>> timestamp, e.g:
>>
>> x-responsetime: 1392070197.589
>>
>> What am I doing wrong?
>
> http://mailman.nginx.org/pipermail/nginx/2012-May/033630.html

may be better set default value of variable $upstream_response_time
to url on site nginx.org with faq/documentation, something like this:

===================================================================

The $upstream_response_time is only meaningful once response is
fully got from upstream, and this happens after response headers
are got (and sent to client).  That is, you basically can't use
$upstream_response_time in add_header, only in logs.

===================================================================

?

or, if only number allowed, some fail-safe value, for example, -1 or 0.

-- 
Best regards,
  Gena