Hello!

On Mon, Nov 09, 2009 at 05:06:28PM +0100, Daniele Melosi wrote:

> Hi all,
>
> i've a strange problem: in my conf i use proxy for external requests
> for mp3 download to our backends in this way:
>
> location ^~ /tag/ {
> client_body_timeout 180;
> proxy_pass http://192.168.61.226:8888;
> proxy_redirect default;
> proxy_set_header X-Real-IP $remote_addr;
> proxy_set_header Host $host;
> proxy_set_header X-Org-host $host;
> proxy_set_header X-Org-uri $request_uri;
> proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
> proxy_pass_header Server;
> }
>
> From 1 to 3% of the requests the backend servers sent to nginx more
> bytes then nginx logs and serves. In this example the backend sends
> 9445489 bytes and from nginx logs i see only 1994793 bytes sent.
>
> This is a sample log lines:
> $IP ADDRESS - - [09/Nov/2009:01:21:20 +0100] "GET
> /tag/10233569/Piu_di_un_giorno_in_.mp3 HTTP/1.1" 200 1994793 ""
> "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
> 2.0.50727)" "-" 66.040
>
> In every case the request_time is > 60 seconds (my nginx version is 0.6.39).

Looks like timeout writing to client. Try looking into error log,
it should have details.

> Unfortunately i'm unable to reproduce the problem by myself. Any
> idea of how to reproduce it ?
>
> Is it a good idea to upgrade to 0.7.63 version ?

It's probably a good idea, but unlikely to resolve anything here
(as it looks like there is nothing to resolve...).

Maxim Dounin