SWFUpload error after 10 minutes

Hello every body,

 

I try to use by uploadify and SWFUpload to create a small Wetransfer (https://www.wetransfer.com/) for my company.

 

If my upload has need up to 10 minutes to be uploaded, the Uploadify say "IO error" 2038.

When I tried to upload 1.5Go on my server in local, it's work because the upload time is less that 10 minutes.

For me, the problem is in a timeout or maximum run time execution.

 

Somebody can help me on this problem ?

This is my current config :
I run on IIS 7.0/C#.Net 4.0.

web.config
<system.webServer>
    <asp>
        <limits scriptTimeout="02:00:00" />
    </asp>
    <security>
        <requestFiltering>
           <requestLimits maxAllowedContentLength="1610612736" />
        </requestFiltering>
    </security>
</system.webServer>
<system.web>
     <httpRuntime executionTimeout="7200" maxRequestLength="1610612736" />
</system.web>


My C# file
public class Upload : IHttpHandler {

public void ProcessRequest (HttpContext context)
{
HttpContext.Current.Server.ScriptTimeout = 7200;
(...)
}

Thk in advance !!!