Same cached objects, but different body_bytes_sent

[Zhang Chao]

Hi, Guilherme!

The HTTP status code 499, which means client closed the connection before
Nginx even sent one byte.
As long as Nginx sent some bytes, 499 will not arise, and Nginx just record
the code generated previously, also, i bet your log_format  of your
access_log is the default one provided by Nginx, it is helpless when we
need to speculate whether
client closed the connection. Maybe you can modify your log_format such as
appending “$http_content_length”, you can analysis this case by comparing
the value of “$http_content_length” and “$body_bytes_sent”, of course the
“Accept-Encoding” header can never be passed.

On 3 June 2017 at 00:45:09, Guilherme (guilherme.e at gmail.com) wrote:

@itpp2012:

I cant replicate the problem using curl from 2 different locations.

Its not supposed to return 206 in range requests?

@zhang_chao:

I'm not sure about this, but its not supposed to return 499 in this case?

Tks,

Guilherme

On Fri, Jun 2, 2017 at 3:45 AM, Zhang Chao <zchao1995 at gmail.com> wrote:

> Hi!
>
> Are you sure the client didn't close the connection when the body is
> transferring?
>
>
> On 2 June 2017 at 10:00:36, Guilherme (guilherme.e at gmail.com) wrote:
>
> I identified a strange behavior in my nginx/1.11.2. Same cached objects
> are returning different content length. In the logs below, body_bytes_sent
> changes intermittently between 215 and 3782 bytes. The correct length is
> 3782. (these objects are not being updated in this interval)
>
> xxxxxxxxxx - - [02/Jun/2017:01:29:06 +0000] "GET
> /img/app/bt_google_play.png HTTP/2.0" 200 *215* "xxxxxxxxxx" "Mozilla/5.0
> (Linux; Android 6.0.1; SM-G600FY Build/MMB29M) AppleWebKit/537.36 (KHTML,
> like Gecko) Chrome/58.0.3029.83 Mobile Safari/537.36" 42 215 10.571
> "image/png" HIT
> xxxxxxxxxx - - [02/Jun/2017:01:29:50 +0000] "GET
> /img/app/bt_google_play.png HTTP/2.0" 200 *3782* "xxxxxxxxxx"
> "Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_2 like Mac OS X)
> AppleWebKit/603.2.4 (KHTML, like Gecko) Version/10.0 Mobile/14F89
> Safari/602.1" 32 3791 0.344 "image/png" HIT
>
> ** request_time is always high for the shorter requests*
>
> I'm ignoring Vary header in proxy_ignore_headers too.
>
> Any idea about this?
>
> Tks,
>
> Guilherme
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