从 IClientMessageInspector 切换到 IParameterInspector？

Question

我的 winform WCF 客户端有一个自定义的 IEndpointBehavior，其中 ApplyClientBehavior 方法如下所示：

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

为了掌握序列化参数，我已将 IClientMessageInspector 和 IDispatchMessageInspector 更改为 IParameterInspector。如何转换 IEndpointBehavior 以改为加载此 IParameterInspector？

我找到了这个：

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

然而，我的客户端是从 CreateChannel 创建的，因此 Behaviors 不存在，而是有一个不会采用 IParameterInspector 的 OperationsBehaviors。

Answer 1

这是通过将 IParameterInspector 添加到每个操作来完成的：

public void ApplyClientBehavior(ServiceEndpoint endpoint, System.ServiceModel.Dispatcher.ClientRuntime clientRuntime)
        {     
            foreach (var clientOperation in clientRuntime.Operations)
                clientOperation.ParameterInspectors.Add(new CustomMessageInspector());

            foreach (var clientOperation in clientRuntime.CallbackDispatchRuntime.Operations)
                clientOperation.ParameterInspectors.Add(new CustomMessageInspector());
        }

Answer 2

你可以在配置文件中配置它的行为，这里是一个演示：

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

这是 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;
    }
}

Inspector实现了IParameterInspector的接口。

            <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>

这是配置文件。

这是客户端的结果运行。

这里是参考link:

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

从 IClientMessageInspector 切换到 IParameterInspector？

Switch from IClientMessageInspector to IParameterInspector?

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