Nginx double requests for my upstreams?

[Maxim Dounin]

Hello!

On Mon, Jun 22, 2009 at 10:19:54PM -0400, funkdoobiest wrote:

> Hi Maxim,
> 
> I have checked the nginx-access logs and I found following:
> 
> 84.72.240.XXX - - [03/Jun/2009:16:38:46 +0200] "POST /premium/paypremium HTTP/1.1" 499 0 "http://www.host.com/premium/getpremium/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
> 84.72.240.XXX - - [03/Jun/2009:16:38:48 +0200] "POST /premium/paypremium HTTP/1.1" 200 2230 "http://www.host.com/premium/getpremium/" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)"
> 
> 
> 
> What can I do or what do I wrong?

Error code 499 means that *client* closed connection before it got 
response.  In this particular case it looks like duplicate form 
submit, e.g. due to second click on submit button.

Maxim Dounin