[Mono-aspnet-list] How to fix random Failed to math path errors

[Andrus]

Mono MVC4 + Web API single page application is running in Debian with
mod_modo.

Refreshing browser window several times by pressing Chrome Refresh button
causes 500 errors returned from server. Those errors occurs occur randonly
on random request but are reproducible if refreshed several times.

For those requests apache error.log contains `Failed to map path` errors (
file is below) .
How to fix them ?

Mono: 3.2.1 (tarball E aug 19 21:33:54 EEST 2013); ASP.NET Version:
4.0.30319.17020
mod_mono: 2.6.3
Apache: 2.2.16

The following lines are added to mono config file:

    MonoMaxActiveRequests 0
    MonoMAxWaitingRequests 150

error_log:


    [Tue Dec 03 18:25:32 2013] [error] Command stream corrupted, last
command was 1
    System.InvalidOperationException: Failed to map path
'/css/images/browser.png'
      at System.Web.HttpRequest.MapPath (System.String virtualPath,
System.String baseVirtualDir, Boolea
      at System.Web.HttpRequest.MapPath (System.String virtualPath)
[0x00000] in <filename unknown>:0
      at System.Web.Hosting.HostingEnvironment.MapPath (System.String
virtualPath) [0x00000] in <filenam
      at System.Web.Hosting.DefaultVirtualPathProvider.FileExists
(System.String virtualPath) [0x00000]
      at Mono.WebServer.Paths.VirtualPathExists (IApplicationHost appHost,
System.String verb, System.St
      at Mono.WebServer.Paths.GetPathsFromUri (IApplicationHost appHost,
System.String verb, System.Stri
      at Mono.WebServer.ModMonoWorkerRequest.GetRequestData () [0x00000] in
<filename unknown>:0
      at Mono.WebServer.MonoWorkerRequest.ReadRequestData () [0x00000] in
<filename unknown>:0
      at Mono.WebServer.BaseApplicationHost.ProcessRequest
(Mono.WebServer.MonoWorkerRequest mwr) [0x000
      at Mono.WebServer.ModMonoApplicationHost.ProcessRequest (Int32 reqId,
System.String verb, System.S
      at (wrapper remoting-invoke-with-check)
Mono.WebServer.ModMonoApplicationHost:ProcessRequest (int,
      at Mono.WebServer.ModMonoWorker.InnerRun (System.Object state)
[0x00000] in <filename unknown>:0
      at Mono.WebServer.ModMonoWorker.Run (System.Object state) [0x00000] in
<filename unknown>:0
    [Tue Dec 03 18:28:11 2013] [error] (70014)End of file found: read_data
failed
    [Tue Dec 03 18:28:11 2013] [error] Command stream corrupted, last
command was 1
    System.InvalidOperationException: Failed to map path '/images/load.gif'
      at System.Web.HttpRequest.MapPath (System.String virtualPath,
System.String baseVirtualDir, Boolea
      at System.Web.HttpRequest.MapPath (System.String virtualPath)
[0x00000] in <filename unknown>:0
      at System.Web.Hosting.HostingEnvironment.MapPath (System.String
virtualPath) [0x00000] in <filenam
      at System.Web.Hosting.DefaultVirtualPathProvider.FileExists
(System.String virtualPath) [0x00000]
      at Mono.WebServer.Paths.VirtualPathExists (IApplicationHost appHost,
System.String verb, System.St
      at Mono.WebServer.Paths.GetPathsFromUri (IApplicationHost appHost,
System.String verb, System.Stri
      at Mono.WebServer.ModMonoWorkerRequest.GetRequestData () [0x00000] in
<filename unknown>:0
      at Mono.WebServer.MonoWorkerRequest.ReadRequestData () [0x00000] in
<filename unknown>:0
      at Mono.WebServer.BaseApplicationHost.ProcessRequest
(Mono.WebServer.MonoWorkerRequest mwr) [0x000
      at Mono.WebServer.ModMonoApplicationHost.ProcessRequest (Int32 reqId,
System.String verb, System.S
      at (wrapper remoting-invoke-with-check)
Mono.WebServer.ModMonoApplicationHost:ProcessRequest (int,
      at Mono.WebServer.ModMonoWorker.InnerRun (System.Object state)
[0x00000] in <filename unknown>:0
      at Mono.WebServer.ModMonoWorker.Run (System.Object state) [0x00000] in
<filename unknown>:0
    [Tue Dec 03 18:28:11 2013] [error] (70014)End of file found: read_data
failed
    [Tue Dec 03 18:28:11 2013] [error] Command stream corrupted, last
command was 1

Andrus.