Hi Joe,

I'm having problems with the SharedFilesDownload.aspx page.  The problems occur for large files (i.e. 300MB).  When I click on a the file to download in the shared files module I do not get a dialog prompting me to save the file.  Firefox browser loads the page for about 30 seconds before showing a page that says: "The connection was reset. The connection to the server was reset while the page was loading."  I have the httpruntime executionTimeout set approprieatly.  Any ideas on how to diagnose this problem are greatly appreciated.

The following message is logged in currentlog.config:

2007-08-13 11:01:16,595 [4980] ERROR mojoPortal.Web.Global [(null)] - /SharedFilesDownload.aspx?pageid=81&fileid=592&mid=139
System.Web.HttpException: The remote host closed the connection. The error code is 0x80072746.
at System.Web.Hosting.ISAPIWorkerRequestInProcForIIS6.FlushCore(Byte[] status, Byte[] header, Int32 keepConnected, Int32 totalBodySize, Int32 numBodyFragments, IntPtr[] bodyFragments, Int32[] bodyFragmentLengths, Int32 doneWithSession, Int32 finalStatus, Boolean& async)
at System.Web.Hosting.ISAPIWorkerRequest.FlushCachedResponse(Boolean isFinal)
at System.Web.Hosting.ISAPIWorkerRequest.FlushResponse(Boolean finalFlush)
at Brettle.Web.NeatUpload.DecoratedWorkerRequest.FlushResponse(Boolean finalFlush)
at System.Web.HttpResponse.Flush(Boolean finalFlush)
at System.Web.HttpWriter.TransmitFile(String filename, Int64 size, Boolean isImpersonating, Boolean supportsLongTransmitFile)
at System.Web.HttpResponse.TransmitFile(String filename)
at mojoPortal.Web.SharedFilesDownload.DownloadFile()
at mojoPortal.Web.SharedFilesDownload.Page_Load(Object sender, EventArgs e)
at System.Web.UI.Control.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) 

The following message is logged in the Windows event log:

Event Type: Warning
Event Source: ASP.NET 2.0.50727.0
Event Category: Web Event
Event ID: 1309
Date: 8/13/2007
Time: 10:30:39 AM
User: N/A
Computer: ATAWEB
Description:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 8/13/2007 10:30:39 AM
Event time (UTC): 8/13/2007 5:30:39 PM
Event ID: 0257275b2dda49bcb5112bcb35c7436d
Event sequence: 22949
Event occurrence: 8855
Event detail code: 0

Application information:
Application domain: /LM/W3SVC/1267602825/Root-2-128314877691965228
Trust level: Full
Application Virtual Path: /
Application Path: C:\Inetpub\mojoportal\
Machine name: ATAWEB

Process information:
Process ID: 5180
Process name: w3wp.exe
Account name: NT AUTHORITY\NETWORK SERVICE

Exception information:
Exception type: HttpException
Exception message: The remote host closed the connection. The error code is 0x80072746.

Request information:
Request URL: https://my.company.com/SharedFilesDownload.aspx?pageid=81&fileid=592&mid=139
Request path: /SharedFilesDownload.aspx
User host address:
User:
Is authenticated: True
Authentication Type: Forms
Thread account name: NT AUTHORITY\NETWORK SERVICE

Thread information:
Thread ID: 1
Thread account name: NT AUTHORITY\NETWORK SERVICE
Is impersonating: False
Stack trace: at mojoPortal.Web.Global.HandleException(Exception ex)
at mojoPortal.Web.Global.Application_Error(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Web.HttpApplication.RaiseOnError()

Hi Joe,

Any ideas?

Thanks,

Jesse

Joe,

Thanks for the reply.  I think I've identified the problem. See http://www.brettle.com/NeatUpload-1.1/docs/Manual.html#LargeResponseNotBuffered for background information.  The NeatUpload module was causing the problem with the Response.TransmitFile() function.  I observed the file requested for download being buffered by the ASP worker thread which is not supposed to happen when using the Response.TransmitFile() function.  The solution is to disable the NeatUpload module for the SharedFilesDownload.aspx page in the Web.config file as follows:

<!-- This is necessary to prevent the webserver from buffering the download file
<location path="SharedFilesDownload.aspx">
<system.web>
<neatUpload useHttpModule="false" />
<httpRuntime maxRequestLength="2097151" executionTimeout="14400" />
</system.web>
</location>

-Jesse