IClientChannelSink Interface

Definição

Namespace:

System.Runtime.Remoting.Channels

Assembly:

mscorlib.dll

Fornece as propriedades e as funções necessárias para coletores de canal do cliente.

public interface class IClientChannelSink : System::Runtime::Remoting::Channels::IChannelSinkBase

[System.Runtime.InteropServices.ComVisible(true)]
public interface IClientChannelSink : System.Runtime.Remoting.Channels.IChannelSinkBase

[<System.Runtime.InteropServices.ComVisible(true)>]
type IClientChannelSink = interface
    interface IChannelSinkBase

Public Interface IClientChannelSink
Implements IChannelSinkBase

Derivado

System.Runtime.Remoting.Channels.BinaryClientFormatterSink

System.Runtime.Remoting.Channels.IClientFormatterSink

System.Runtime.Remoting.Channels.SoapClientFormatterSink

Atributos

ComVisibleAttribute

Implementações

IChannelSinkBase

Exemplos

O exemplo de código a seguir ilustra uma implementação da IClientChannelSink interface .

using namespace System::Runtime::InteropServices;
using namespace System;
using namespace System::Collections;
using namespace System::IO;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Messaging;

[System::Security::Permissions::PermissionSet(System::Security::
   Permissions::SecurityAction::Demand, Name = "FullTrust")]
public ref class ClientSink: public BaseChannelSinkWithProperties, public IClientChannelSink
{
private:

   // This class inherits from BaseChannelSinkWithPropertes
   // to get an implementation of IChannelSinkBase.
   // The next sink in the chain.
   IClientChannelSink^ nextSink;


public:
   property IClientChannelSink^ NextChannelSink 
   {
      virtual IClientChannelSink^ get()
      {
         return (nextSink);
      }
   }

   virtual Stream^ GetRequestStream( IMessage^ message, ITransportHeaders^ requestHeaders )
   {
      // Get the request stream from the next sink in the chain.
      return (nextSink->GetRequestStream( message, requestHeaders ));
   }

   virtual void ProcessMessage( IMessage^ message, ITransportHeaders^ requestHeaders, Stream^ requestStream, [Out]ITransportHeaders^% responseHeaders, [Out]Stream^% responseStream )
   {
      // Print the request message properties.
      Console::WriteLine( "---- Message from the client ----" );
      IDictionary^ dictionary = message->Properties;
      IEnumerator^ myEnum = dictionary->Keys->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         Object^ key = safe_cast<Object^>(myEnum->Current);
         Console::WriteLine( "{0} = {1}", key, dictionary[ key ] );
      }

      Console::WriteLine( "---------------------------------" );

      // Hand off to the next sink in the chain.
      nextSink->ProcessMessage( message, requestHeaders, requestStream, responseHeaders, responseStream );
   }

   // For synchronous remoting, it is not necessary to implement this method.
   virtual void AsyncProcessRequest( IClientChannelSinkStack^ /*sinkStack*/, IMessage^ /*message*/, ITransportHeaders^ /*requestHeaders*/, Stream^ /*requestStream*/ )
   {
      throw gcnew NotImplementedException;
   }

   virtual void AsyncProcessResponse( IClientResponseChannelSinkStack^ /*sinkStack*/, Object^ /*state*/, ITransportHeaders^ /*responseHeaders*/, Stream^ /*responseStream*/ )
   {
      throw gcnew NotImplementedException;
   }

   property System::Collections::IDictionary^ Properties 
   {
      virtual System::Collections::IDictionary^ get() override
      {
         return (dynamic_cast<BaseChannelSinkWithProperties^>(this))->Properties;
      }
   }

   // Constructor
   ClientSink( IClientChannelSink^ sink )
   {
      if ( sink == nullptr )
            throw gcnew ArgumentNullException( "sink" );

      nextSink = sink;
   }
};

using System;
using System.Collections;
using System.IO;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Messaging;

public class ClientSink : BaseChannelSinkWithProperties, IClientChannelSink
{

    // This class inherits from BaseChannelSinkWithPropertes
    // to get an implementation of IChannelSinkBase.

    // The next sink in the chain.
    private IClientChannelSink nextSink;

    public IClientChannelSink NextChannelSink
    {
        get
        {
            return(nextSink);
        }
    }

    public Stream GetRequestStream (IMessage message, ITransportHeaders requestHeaders)
    {
        // Get the request stream from the next sink in the chain.
        return( nextSink.GetRequestStream(message, requestHeaders) );
    }

    public void ProcessMessage (IMessage message,
                                ITransportHeaders requestHeaders,
                                Stream requestStream,
                                out ITransportHeaders responseHeaders,
                                out Stream responseStream)
    {
        // Print the request message properties.
        Console.WriteLine("---- Message from the client ----");
        IDictionary dictionary = message.Properties;
        foreach (Object key in dictionary.Keys)
        {
            Console.WriteLine("{0} = {1}", key, dictionary[key]);
        }
        Console.WriteLine("---------------------------------");

        // Hand off to the next sink in the chain.
        nextSink.ProcessMessage(message, requestHeaders, requestStream, out responseHeaders, out responseStream);
    }

    // For synchronous remoting, it is not necessary to implement this method.
    public void AsyncProcessRequest (IClientChannelSinkStack sinkStack,
                                     IMessage message,
                                     ITransportHeaders requestHeaders,
                                     Stream requestStream)
    {
        throw new NotImplementedException();
    }

    public void AsyncProcessResponse (IClientResponseChannelSinkStack sinkStack,
                                      Object state,
                                      ITransportHeaders responseHeaders,
                                      Stream responseStream)
    {
        throw new NotImplementedException();
    }

    // Constructor
    public ClientSink (IClientChannelSink sink) {
      if (sink == null) throw new ArgumentNullException("sink");
      nextSink = sink;
    }
}

Consulte a documentação da IClientChannelSinkProvider interface para obter um exemplo da implementação do provedor de coletor de cliente correspondente.

Comentários

Os coletores de canal fornecem um ponto de plug-in que permite o acesso às mensagens subjacentes que fluem pelo canal, bem como o fluxo usado pelo mecanismo de transporte para enviar mensagens para um objeto remoto. Os coletores de canal são vinculados em uma cadeia de provedores de coletores de canal e todas as mensagens de canal fluem por essa cadeia de coletores antes de serem serializadas e transportadas.

Propriedades

NextChannelSink	Obtém o próximo coletor de canal do cliente na cadeia de coletor do cliente.
Properties	Obtém um dicionário por meio do qual propriedades no coletor podem ser acessadas. (Herdado de IChannelSinkBase)

Métodos

AsyncProcessRequest(IClientChannelSinkStack, IMessage, ITransportHeaders, Stream)	Solicita o processamento assíncrono de uma chamada de método no coletor atual.
AsyncProcessResponse(IClientResponseChannelSinkStack, Object, ITransportHeaders, Stream)	Solicita o processamento assíncrono de uma resposta a uma chamada de método no coletor atual.
GetRequestStream(IMessage, ITransportHeaders)	Retorna o Stream no qual a mensagem fornecida deve ser serializada.
ProcessMessage(IMessage, ITransportHeaders, Stream, ITransportHeaders, Stream)	Solicita o processamento de mensagens do coletor atual.

Confira também

• Coletores e Cadeias de Coletores