Switch from IClientMessageInspector to IParameterInspector?

Question

My winform WCF client have a custom IEndpointBehavior where the ApplyClientBehavior method looks like this :

public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
        {
            clientRuntime.MessageInspectors.Add(new CustomMessageInspector());
            clientRuntime.CallbackDispatchRuntime.MessageInspectors.Add(new CustomMessageInspector());      
        }

To get hold of the serlized parameters I have changed from IClientMessageInspector and IDispatchMessageInspector to IParameterInspector. How to I convert the IEndpointBehavior to load this IParameterInspector instead?

I have found this :

SimpleServiceClient proxy = new SimpleServiceClient();
proxy.Endpoint.Contract.Operations[0].Behaviors.Add(new MyParameterInspector());

My client is however created from CreateChannel so Behaviors do not exists, instead there is a OperationsBehaviors that will not take a IParameterInspector.

Answer 1

You can configure its behavior in the configuration file,Here is a demo:

          public void ApplyClientBehavior(ServiceEndpoint endpoint, ClientRuntime clientRuntime)
    {
        foreach (ClientOperation op in clientRuntime.Operations)
            op.ParameterInspectors.Add(new Inspector());
    }

This is ApplyClientBehavior.

    public class Inspector : IParameterInspector
{
    public void AfterCall(string operationName, object[] outputs, object returnValue, object correlationState)
    {
        Console.WriteLine(
                "IParameterInspector.AfterCall called for {0} with return value {1}.",
                     operationName,
                    returnValue.ToString()
                    );
    }

    public object BeforeCall(string operationName, object[] inputs)
    {
        Console.WriteLine("IParameterInspector.BeforeCall called for {0}.", operationName);
        return null;
    }
}

The Inspector implements the interface of IParameterInspector.

            <behaviors>
        <endpointBehaviors>
            <behavior name="Test">
                <clientInterceptors/>
            </behavior>
        </endpointBehaviors>
    </behaviors>
    <extensions>
        <behaviorExtensions>
            <add
              name="clientInterceptors"
              type="Client.InspectorInserter,Client, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null" />
        </behaviorExtensions>
    </extensions>

This is the configuration file.

This is the result of the client-side running.

Here is the reference link:

https://learn.microsoft.com/en-us/dotnet/framework/wcf/extending/how-to-inspect-or-modify-parameters