Have been readign around on IErrorHandler and want to go the config route. so, I have read the following in an attempt to implement it.

MSDN

Keyvan Nayyeri blog about the type defintion

Rory Primrose Blog

I have got it to compile and from the various errors i have fixed it seems like WCF is actually loading the error handler. My problem is that the exception that i am throwing to handle in the error handler doesn;t get the exception passed to it.

My service implementation simply calls a method on another class that throws ArgumentOutOfRangeException - however this exception never gets handled by the handler.

My web.config

<system.serviceModel>
    <bindings>
      <basicHttpBinding>
        <binding name="basic">
          <security mode="None" />                      
        </binding>
      </basicHttpBinding>
    </bindings>
    <extensions>
      <behaviorExtensions>
        <add name="customHttpBehavior"
             type="ErrorHandlerTest.ErrorHandlerElement, ErrorHandlerTest, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" />
      </behaviorExtensions>
    </extensions>
    <behaviors>
      <serviceBehaviors>
        <behavior name="exceptionHandlerBehaviour">          
          <serviceMetadata httpGetEnabled="true"/>
          <!-- To receive exception details in faults for debugging purposes, set the value below to true.  Set to false before deployment to avoid disclosing exception information -->
          <serviceDebug includeExceptionDetailInFaults="true"/>
          <customHttpBehavior />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="exceptionHandlerBehaviour" name="ErrorHandlerTest.Service1">
        <endpoint binding="basicHttpBinding" bindingConfiguration="basic" contract="ErrorHandlerTest.IService1" />
      </service>
    </services>

Service Contract

[ServiceContract]
public interface IService1
{
    [OperationContract]
    [FaultContract(typeof(GeneralInternalFault))]
    string GetData(int value);
}

The ErrorHandler class

public class ErrorHandler : IErrorHandler , IServiceBehavior 
{
    public bool HandleError(Exception error)
    {
        Console.WriteLine("caught exception {0}:",error.Message );
        return true;
    }

    public void ProvideFault(Exception error, MessageVersion version, ref Message fault)
    {
       if (fault!=null )
       {
           if (error is ArgumentOutOfRangeException )
           {
               var fe = new FaultException<GeneralInternalFault>(new GeneralInternalFault("general internal fault."));
               MessageFault mf = fe.CreateMessageFault();

               fault = Message.CreateMessage(version, mf, fe.Action);

           }
           else
           {
               var fe = new FaultException<GeneralInternalFault>(new GeneralInternalFault(" the other general internal fault."));
               MessageFault mf = fe.CreateMessageFault();

               fault = Message.CreateMessage(version, mf, fe.Action);
           }
       }
    }

    public void AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase, System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters)
    {

    }

    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {
        IErrorHandler errorHandler = new ErrorHandler();
        foreach (ChannelDispatcherBase channelDispatcherBase in serviceHostBase.ChannelDispatchers)
        {
            ChannelDispatcher channelDispatcher = channelDispatcherBase as ChannelDispatcher;
            if (channelDispatcher != null)
            {
                channelDispatcher.ErrorHandlers.Add(errorHandler);
            }
        }
    }


    public void Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {


    }
}

And the Behaviour Extension Element

    public class ErrorHandlerElement : BehaviorExtensionElement 
    {
        protected override object CreateBehavior()
        {
            return new ErrorHandler();
        }

        public override Type BehaviorType
        {
            get { return typeof(ErrorHandler); }
        }
    }