HttpServerChannel Clase

Definición

public ref class HttpServerChannel : System::Runtime::Remoting::Channels::BaseChannelWithProperties, System::Runtime::Remoting::Channels::IChannelReceiver, System::Runtime::Remoting::Channels::IChannelReceiverHook

public class HttpServerChannel : System.Runtime.Remoting.Channels.BaseChannelWithProperties, System.Runtime.Remoting.Channels.IChannelReceiver, System.Runtime.Remoting.Channels.IChannelReceiverHook

type HttpServerChannel = class
    inherit BaseChannelWithProperties
    interface IChannelReceiver
    interface IChannel
    interface IChannelReceiverHook

Public Class HttpServerChannel
Inherits BaseChannelWithProperties
Implements IChannelReceiver, IChannelReceiverHook

Herencia

Object

BaseChannelObjectWithProperties

BaseChannelWithProperties

HttpServerChannel

Implementaciones

IChannel IChannelReceiver IChannelReceiverHook

Ejemplos

En el ejemplo de código siguiente se muestra cómo usar un HttpServerChannel objeto para configurar un servidor remoto y su cliente. El ejemplo contiene tres partes:

• Un servidor

• Un cliente

• Objeto remoto utilizado por el servidor y el cliente

En el ejemplo de código siguiente se muestra un servidor.

#using <System.dll>
#using <System.Runtime.Remoting.dll>
#using "common.dll"
using namespace System;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Http;

int main()
{
   // Create the server channel.
   HttpServerChannel^ serverChannel = gcnew HttpServerChannel( 9090 );
   
   // Register the server channel.
   ChannelServices::RegisterChannel( serverChannel );
   
   // Display the channel's scheme.
   Console::WriteLine( L"The channel scheme is {0}.", serverChannel->ChannelScheme );
   
   // Display the channel's URI.
   Console::WriteLine( L"The channel URI is {0}.", serverChannel->GetChannelUri() );
   
   // Expose an object for remote calls.
   RemotingConfiguration::RegisterWellKnownServiceType(
      RemoteObject::typeid, L"RemoteObject.rem", WellKnownObjectMode::Singleton );
   
   // Get the channel's sink chain.
   IServerChannelSink^ sinkChain = serverChannel->ChannelSinkChain;
   Console::WriteLine( L"The type of the server channel's sink chain is {0}.", sinkChain->GetType() );
   
   // See if the channel wants to listen.
   bool wantsToListen = serverChannel->WantsToListen;
   Console::WriteLine( L"The value of WantsToListen is {0}.", wantsToListen );
   
   // Parse the channel's URI.
   array<String^>^ urls = serverChannel->GetUrlsForUri( L"RemoteObject.rem" );
   if ( urls->Length > 0 )
   {
      String^ objectUrl = urls[ 0 ];
      String^ objectUri;
      String^ channelUri = serverChannel->Parse( objectUrl,  objectUri );
      Console::WriteLine( L"The object URI is {0}.", objectUri );
      Console::WriteLine( L"The channel URI is {0}.", channelUri );
      Console::WriteLine( L"The object URL is {0}.", objectUrl );
   }

   
   // Wait for the user prompt.
   Console::WriteLine( L"Press ENTER to exit the server." );
   Console::ReadLine();
   Console::WriteLine( L"The server is exiting." );
}

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;

public class Server
{
    public static void Main(string[] args)
    {
        // Create the server channel.
        HttpServerChannel serverChannel = new HttpServerChannel(9090);

        // Register the server channel.
        ChannelServices.RegisterChannel(serverChannel);

        // Display the channel's scheme.
        Console.WriteLine("The channel scheme is {0}.",
            serverChannel.ChannelScheme);

        // Display the channel's URI.
        Console.WriteLine("The channel URI is {0}.",
            serverChannel.GetChannelUri());

        // Expose an object for remote calls.
        RemotingConfiguration.RegisterWellKnownServiceType(
            typeof(RemoteObject), "RemoteObject.rem",
            WellKnownObjectMode.Singleton);

        // Get the channel's sink chain.
        IServerChannelSink sinkChain = serverChannel.ChannelSinkChain;
        Console.WriteLine(
            "The type of the server channel's sink chain is {0}.",
            sinkChain.GetType().ToString());

        // See if the channel wants to listen.
        bool wantsToListen = serverChannel.WantsToListen;
        Console.WriteLine(
            "The value of WantsToListen is {0}.",
            wantsToListen);

        // Parse the channel's URI.
        string[] urls = serverChannel.GetUrlsForUri("RemoteObject.rem");
        if (urls.Length > 0)
        {
            string objectUrl = urls[0];
            string objectUri;
            string channelUri =
                serverChannel.Parse(objectUrl, out objectUri);
            Console.WriteLine("The object URI is {0}.", objectUri);
            Console.WriteLine("The channel URI is {0}.", channelUri);
            Console.WriteLine("The object URL is {0}.", objectUrl);
        }

        // Wait for the user prompt.
        Console.WriteLine("Press ENTER to exit the server.");
        Console.ReadLine();
        Console.WriteLine("The server is exiting.");
    }
}

En el ejemplo de código siguiente se muestra un cliente para este servidor.

#using <System.dll>
#using <System.Runtime.Remoting.dll>
#using "common.dll"
using namespace System;
using namespace System::Runtime::Remoting;
using namespace System::Runtime::Remoting::Channels;
using namespace System::Runtime::Remoting::Channels::Http;

void main()
{
   // Create the channel.
   HttpClientChannel^ channel = gcnew HttpClientChannel;
   
   // Register the channel.
   ChannelServices::RegisterChannel( channel );
   
   // Register as client for remote object.
   WellKnownClientTypeEntry^ remoteType = gcnew WellKnownClientTypeEntry(
      RemoteObject::typeid,L"http://localhost:9090/RemoteObject.rem" );
   RemotingConfiguration::RegisterWellKnownClientType( remoteType );
   
   // Create an instance of the remote object.
   RemoteObject^ service = gcnew RemoteObject;
   
   // Invoke a method on the remote object.
   Console::WriteLine( L"The client is invoking the remote object." );
   Console::WriteLine( L"The remote object has been called {0} times.", service->GetCount() );
}

using System;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
using System.Runtime.Remoting.Channels.Http;

public class Client
{
    public static void Main(string[] args)
    {
        // Create the channel.
        HttpClientChannel channel = new HttpClientChannel();

        // Register the channel.
        ChannelServices.RegisterChannel(channel);

        // Register as client for remote object.
        WellKnownClientTypeEntry remoteType = new WellKnownClientTypeEntry(
            typeof(RemoteObject),"http://localhost:9090/RemoteObject.rem");
        RemotingConfiguration.RegisterWellKnownClientType(remoteType);

        // Create an instance of the remote object.
        RemoteObject service = new RemoteObject();

        // Invoke a method on the remote object.
        Console.WriteLine("The client is invoking the remote object.");
        Console.WriteLine("The remote object has been called {0} times.",
            service.GetCount());
    }
}

En el ejemplo de código siguiente se muestra el objeto remoto utilizado por el servidor y el cliente.

using namespace System;
using namespace System::Runtime::Remoting;

// Remote object.
public ref class RemoteObject: public MarshalByRefObject
{
private:
   static int callCount = 0;

public:
   int GetCount()
   {
      callCount++;
      return (callCount);
   }

};

using System;
using System.Runtime.Remoting;

// Remote object.
public class RemoteObject : MarshalByRefObject
{
    private int callCount = 0;

    public int GetCount()
    {
        callCount++;
        return(callCount);
    }
}

Comentarios

Canales transporta mensajes a través de límites de comunicación remota (por ejemplo, entre equipos en dominios de aplicación). La HttpServerChannel clase transporta mensajes mediante el protocolo HTTP.

La infraestructura remota de .NET Framework usa canales para transportar llamadas remotas. Cuando un cliente realiza una llamada a un objeto remoto, la llamada se serializa en un mensaje enviado por un canal de cliente y recibido por un canal de servidor. A continuación, se deserializa y se procesa. Los valores devueltos se transmiten por el canal del servidor y los recibe el canal de cliente.

Para realizar un procesamiento adicional de mensajes en el servidor, puede especificar una implementación de a través de la IServerChannelSinkProvider cual se pasan todos los mensajes procesados por .HttpServerChannel

HttpServerChannel acepta mensajes serializados en formato binario o SOAP.

Un HttpServerChannel objeto tiene propiedades de configuración asociadas que se pueden establecer en tiempo de ejecución en un archivo de configuración (invocando el método estático RemotingConfiguration.Configure ) o mediante programación (pasando una IDictionary colección al HttpServerChannel constructor). Para obtener una lista de estas propiedades de configuración, consulte la documentación de HttpServerChannel.