[Fatal error] Application Exception

[Michal Dziczkowski]

After following the install instructions and starting the server, I had entered in the web browser the address given in the document:

http://[hostname]:8084/scada

replacing the [hostname] with localhost. Instead of the propper content, it has displayed following error:

System.Web.HttpException
The resource cannot be found.

Description: HTTP 404.The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.

Details: Requested URL: /scada
Exception stack trace:
  at System.Web.StaticFileHandler.ProcessRequest (System.Web.HttpContext context) [0x00000] in <filename unknown>:0 
  at System.Web.DefaultHttpHandler.BeginProcessRequest (System.Web.HttpContext context, System.AsyncCallback callback, System.Object state) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication+<Pipeline>c__Iterator1.MoveNext () [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication.Tick () [0x00000] in <filename unknown>:0

. When I removed thw /scada part, it showed me following error:

System.ArgumentOutOfRangeException
Argument is out of range.
Parameter name: startIndex

Description: HTTP 400.Error processing request.

Details: Non-web exception. Exception origin (name of application or object): mscorlib.
Exception stack trace:
  at System.String.Substring (Int32 startIndex) [0x00000] in <filename unknown>:0 
  at Mono.WebServer.MonoWorkerRequest.AssertFileAccessible () [0x00000] in <filename unknown>:0 
  at Mono.WebServer.MonoWorkerRequest.ProcessRequest () [0x00000] in <filename unknown>:0

• This topic was modified 7 years, 9 months ago by Michal Dziczkowski.

[Mikhail]

What OS do you use?
In case of Raspbian, validate the content of the files
/etc/default/mono-xsp4
/etc/xsp4/debian.webapp

Also you can try http://ipaddress:8084/scada/Login.aspx

[Michal Dziczkowski]

I have downloaded the Linux version and I wanted to test it on my Ubuntu 14.04

The login link returned:

System.Web.HttpException
The resource cannot be found.

Description: HTTP 404.The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly.

Details: Requested URL: /scada/login.aspx
Exception stack trace:
  at System.Web.Compilation.BuildManager.AssertVirtualPathExists (System.Web.VirtualPath virtualPath) [0x00000] in <filename unknown>:0 
  at System.Web.Compilation.BuildManager.Build (System.Web.VirtualPath vp) [0x00000] in <filename unknown>:0 
  at System.Web.Compilation.BuildManager.GetCompiledType (System.Web.VirtualPath virtualPath) [0x00000] in <filename unknown>:0 
  at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath (System.Web.VirtualPath virtualPath, System.Type requiredBaseType) [0x00000] in <filename unknown>:0 
  at System.Web.UI.PageParser.GetCompiledPageInstance (System.String virtualPath, System.String inputFile, System.Web.HttpContext context) [0x00000] in <filename unknown>:0 
  at System.Web.UI.PageHandlerFactory.GetHandler (System.Web.HttpContext context, System.String requestType, System.String url, System.String path) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url, Boolean ignoreContextHandler) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url) [0x00000] in <filename unknown>:0 
  at System.Web.HttpApplication+<Pipeline>c__Iterator1.MoveNext () [0x00000] in <filename unknown>:0

[Mikhail]

In Linux a path is case sensitive. Try Login.aspx

[Michal Dziczkowski]

tryed. The result was:

System.ArgumentException
Directory does not exists
Parameter name: value

Description: HTTP 400.Error processing request.

Details: Non-web exception. Exception origin (name of application or object): System.
Exception stack trace:
  at System.IO.FileSystemWatcher.set_Path (System.String value) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.IO.FileSystemWatcher:set_Path (string)
  at System.Web.HttpRuntime.SetupOfflineWatch () [0x00000] in <filename unknown>:0 
  at System.Web.HttpRuntime.Process (System.Web.HttpWorkerRequest req) [0x00000] in <filename unknown>:0 
  at System.Web.HttpRuntime.RealProcessRequest (System.Object o) [0x00000] in <filename unknown>:0 
  at System.Web.HttpRuntime.ProcessRequest (System.Web.HttpWorkerRequest wr) [0x00000] in <filename unknown>:0 
  at Mono.WebServer.MonoWorkerRequest.ProcessRequest () [0x00000] in <filename unknown>:0

[Mikhail]

Something wrong with XSP4 web server.
Post here the version of XSP and the content of the files
/etc/default/mono-xsp4
/etc/xsp4/debian.webapp
/etc/xsp4/conf.d/scada/*_scada

[Michal Dziczkowski]

• dabian.webapp:

  <apps>
    <web-application>
      <name>scada</name>
      <vpath>/scada</vpath>
      <path>/etc/scada/ScadaWeb</path>
    </web-application>
  </apps>

• mono-xsp4:

  # Defaults for mono-xsp4, official version
  # sourced by /etc/init.d/mono-xsp4
  
  # Should we start it?
  start_boot=true
  
  # User and group by default
  user=www-data
  group=www-data
  
  # Default port
  port=8084
  address=0.0.0.0
  
  # Directory for config files
  config_files=/etc/xsp4

• xsp4/conf.d/scada/10_scada:

  This is the configuration file 
  for the scada virtualhost
  path = /etc/scada/ScadaWeb
  alias = /scada

[Mikhail]

100% the same as my Raspberry (Raspbian OS).
Maybe you have an opportunity to try on another computer and compare the results?
What version of XSP and Mono do you use?

[Michal Dziczkowski]

mono: 3.2.8+dfsg-4ubuntu4
mono-xsp4: 3.8-2.1

[Mikhail]

Mine are
mono-complete 3.2.8+dfsg-1
mono-xsp4 3.8-2.1

Could you try to create a simple HTML file with lowercase name within scada/ScadaWeb directory and open it?

[Michal Dziczkowski]

I had uninstalled and re-installed mono, xsp4 RapidScada. Only the part with /scada started to work and the remaining ones still throw errors

[Mikhail]

Only the part with /scada started to work and the remaining ones still throw errors

Sorry, I didn’t catch what part works for now?

The problem is really weird. I think you should surf the linux forums for the clue why XSP doesn’t work. Users use Rapid SCADA on Ubuntu, but this error ocuurs the first time.

[Michal Dziczkowski]

let me put it more simple:

http://localhost:8084/scada works and nothing else (else things throw errors)

[Mikhail]

OK. You may ask for advice if needed.

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