IDispatchMessageInspector.AfterReceiveRequest Método

Referência

Definição

Namespace:: System.ServiceModel.Dispatcher

Assembly:: System.ServiceModel.Primitives.dll

Assembly:: System.ServiceModel.dll

Importante

Algumas informações se referem a produtos de pré-lançamento que podem ser substancialmente modificados antes do lançamento. A Microsoft não oferece garantias, expressas ou implícitas, das informações aqui fornecidas.

Chamado depois que uma mensagem de entrada tiver sido recebida, mas antes ela foi enviada para a operação pretendida.

public:
 System::Object ^ AfterReceiveRequest(System::ServiceModel::Channels::Message ^ % request, System::ServiceModel::IClientChannel ^ channel, System::ServiceModel::InstanceContext ^ instanceContext);

public object AfterReceiveRequest (ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel, System.ServiceModel.InstanceContext instanceContext);

abstract member AfterReceiveRequest : Message * System.ServiceModel.IClientChannel * System.ServiceModel.InstanceContext -> obj

Public Function AfterReceiveRequest (ByRef request As Message, channel As IClientChannel, instanceContext As InstanceContext) As Object

Parâmetros

request: Message

A mensagem de solicitação.

channel: IClientChannel

O canal de entrada.

instanceContext: InstanceContext

A instância de serviço atual.

Retornos

Object

O objeto usado para correlacionar o estado. Este objeto foi passado de volta no método BeforeSendReply(Message, Object).

Exemplos

O exemplo de código a seguir mostra um básico IDispatchMessageInspector que grava uma cadeia de caracteres no console quando ela é invocada.

#region IDispatchMessageInspector Members
public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, IClientChannel channel, InstanceContext instanceContext)
{
  Console.WriteLine("IDispatchMessageInspector.AfterReceiveRequest called.");
  return null;
}

public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
{
  Console.WriteLine("IDispatchMessageInspector.BeforeSendReply called.");
}
#endregion

#Region "IDispatchMessageInspector Members"
    Public Function AfterReceiveRequest(ByRef request As System.ServiceModel.Channels.Message, _
                       ByVal channel As IClientChannel, ByVal instanceContext As InstanceContext) _
                       As Object Implements IDispatchMessageInspector.AfterReceiveRequest
        Console.WriteLine("IDispatchMessageInspector.AfterReceiveRequest called.")
        Return Nothing
    End Function

    Public Sub BeforeSendReply(ByRef reply As System.ServiceModel.Channels.Message, ByVal correlationState As Object) _
    Implements IDispatchMessageInspector.BeforeSendReply
        Console.WriteLine("IDispatchMessageInspector.BeforeSendReply called.")
    End Sub
#End Region

O exemplo de código a seguir mostra a implementação de um IServiceBehavior que adiciona a Inspector IDispatchMessageInspector DispatchRuntime.MessageInspectors coleção.

#region IServiceBehavior Members
public void AddBindingParameters(
  ServiceDescription serviceDescription,
  ServiceHostBase serviceHostBase,
  System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints,
  BindingParameterCollection bindingParameters
)
{ return; }

public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
  foreach (ChannelDispatcher chDisp in serviceHostBase.ChannelDispatchers)
  {
    foreach (EndpointDispatcher epDisp in chDisp.Endpoints)
    {
      epDisp.DispatchRuntime.MessageInspectors.Add(new Inspector());
      foreach (DispatchOperation op in epDisp.DispatchRuntime.Operations)
        op.ParameterInspectors.Add(new Inspector());
    }
  }
}

#Region "IServiceBehavior Members"
    Public Sub AddBindingParameters(ByVal serviceDescription As ServiceDescription, _
                   ByVal serviceHostBase As ServiceHostBase, ByVal endpoints As  _
                   System.Collections.ObjectModel.Collection(Of ServiceEndpoint), _
                   ByVal bindingParameters As BindingParameterCollection) Implements IServiceBehavior.AddBindingParameters
        Return
    End Sub

    Public Sub ApplyDispatchBehavior(ByVal serviceDescription As ServiceDescription, _
                                     ByVal serviceHostBase As ServiceHostBase) Implements _
                                     IServiceBehavior.ApplyDispatchBehavior
        For Each chDisp As ChannelDispatcher In serviceHostBase.ChannelDispatchers
            For Each epDisp As EndpointDispatcher In chDisp.Endpoints
                epDisp.DispatchRuntime.MessageInspectors.Add(New Inspector())
                For Each op As DispatchOperation In epDisp.DispatchRuntime.Operations
                    op.ParameterInspectors.Add(New Inspector())
                Next op
            Next epDisp
        Next chDisp
    End Sub

O exemplo de código a seguir mostra o uso de um arquivo de configuração de aplicativo para carregar o comportamento do serviço que insere o Inspector IDispatchMessageInspector.

<configuration>
  <system.serviceModel>
    <services>
      <service 
        name="Microsoft.WCF.Documentation.SampleService"
        behaviorConfiguration="metadataSupport">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8080/SampleService" />
          </baseAddresses>
        </host>
        <endpoint
          address=""
          binding="wsHttpBinding"
          contract="Microsoft.WCF.Documentation.ISampleService"
        />
        <endpoint
           address="mex"
           binding="mexHttpBinding"
           contract="IMetadataExchange"
        />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metadataSupport">
          <serviceMetadata httpGetEnabled="true" httpGetUrl=""/>
          <serviceInterceptors />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <extensions>
      <behaviorExtensions>
        <add 
          name="serviceInterceptors" 
          type="Microsoft.WCF.Documentation.InspectorInserter, HostApplication, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"
        />
      </behaviorExtensions>
    </extensions>
  </system.serviceModel>
</configuration>

Comentários

Use o AfterReceiveRequest método para inspecionar ou modificar a mensagem de entrada, o canal cliente que a forneceu e a instância de serviço atual. O valor retornado pode ser qualquer objeto que você deseja usar para fins de correlação; ele é retornado para você como o correlationState parâmetro no BeforeSendReply método.