truncated mp3 files when proxy

Daniele Melosi ml at
Mon Nov 9 19:06:28 MSK 2009

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_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).

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 ?

Any suggestions are welcome. Thanks in advance.


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