[Mono-list] Weird issue making HTTP requests

Daniel Lo Nigro lists at dan.cx
Sun Sep 30 08:50:51 UTC 2012

How are you doing the HTTP requests? Through WebRequest, WebClient or

The error is coming from System.Web.TraceManager which I believe
handles application-level
ASP.NET tracing<http://msdn.microsoft.com/en-us/library/1y89ed7z(v=vs.85).aspx>
I'm not sure why it's being invoked with a console application). Do you
have anything odd in your App.config file?

On Fri, Sep 28, 2012 at 11:55 PM, Maurício Linhares <
mauricio.linhares at gmail.com> wrote:

> I'm getting the following error for some of the HTTP requests I'm making:
> Exception during TraceManager initialization:
> System.Reflection.TargetInvocationException: Exception has been thrown
> by the target of an invocation. ---> System.MissingMethodException:
> Method not found:
> 'System.Configuration.IConfigurationSectionHandler.Create'.
>  at System.Reflection.MonoMethod.Invoke (System.Object obj,
> BindingFlags invokeAttr, System.Reflection.Binder binder,
> System.Object[] parameters, System.Globalization.CultureInfo culture)
> [0x000eb] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System.Reflection/MonoMethod.cs:234
>   at System.Reflection.MethodBase.Invoke (System.Object obj,
> System.Object[] parameters) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/corlib/System.Reflection/MethodBase.cs:96
>   at System.Web.Configuration.WebConfigurationManager.GetSection
> (System.String sectionName, System.String path, System.Web.HttpContext
> context) [0x001e6] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Web/System.Web.Configuration_2.0/WebConfigurationManager.cs:516
>   at System.Web.Configuration.WebConfigurationManager.GetSection
> (System.String sectionName, System.String path) [0x00000] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Web/System.Web.Configuration_2.0/WebConfigurationManager.cs:418
>   at
> System.Web.Configuration.WebConfigurationManager.GetWebApplicationSection
> (System.String sectionName) [0x0002c] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Web/System.Web.Configuration_2.0/WebConfigurationManager.cs:670
>   at System.Web.TraceManager..ctor () [0x0001c] in
> /private/tmp/monobuild/build/BUILD/mono-2.10.9/mcs/class/System.Web/System.Web/TraceManager.cs:55
> By looking at the source, the method doesn't really exists, so I'm
> pretty puzzled as to why the mono runtime is making a direct call to
> something that doesn't exist at all.
> Also, it seems like this code is related to webapplications but I'm
> running a console app that makes HTTP requests, not a web server. Is
> this some kind of configuration that I'm missing?
> What's funny is that many other HTTP requests do work, but some
> specific ones fail with this error and the stack trace is not exactly
> revealing as to why this class is being called at all.
> Any hints on how to solve this issue?
> -
> Maurício Linhares
> http://techbot.me/ - http://twitter.com/#!/mauriciojr
> _______________________________________________
> Mono-list maillist  -  Mono-list at lists.ximian.com
> http://lists.ximian.com/mailman/listinfo/mono-list
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