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IpcChannel Class

Note: This class is new in the .NET Framework version 2.0.

Provides a channel implementation that uses the IPC protocol to transmit messages.

Namespace: System.Runtime.Remoting.Channels.Ipc
Assembly: System.Runtime.Remoting (in system.runtime.remoting.dll)

public class IpcChannel : IChannelReceiver, IChannelSender, IChannel, 
	ISecurableChannel
public class IpcChannel implements IChannelReceiver, IChannelSender, 
	IChannel, ISecurableChannel
public class IpcChannel implements IChannelReceiver, IChannelSender, 
	IChannel, ISecurableChannel

Channels are used by the.NET Framework remoting infrastructure to transport remote calls. When a client calls a remote object, the call is serialized into a message that is sent by a client channel and received by a server channel. After the message is received, it is deserialized and processed. Any returned values are transmitted by the server channel and received by the client channel.

The IpcChannel class is a convenience class combining the functionality of the IpcClientChannel class and the IpcServerChannel class.

The following code example shows how to use a IpcChannel to set up a remoting server and its client. The example contains three parts:

  • A server

  • A client

  • A remote object used by the server and the client.

The following code example shows a server.

using System;
using System.Runtime.Remoting.Channels.Ipc;
using System.Security.Permissions;

public class Server
{
[SecurityPermission(SecurityAction.Demand)]
    public static void Main(string[] args)
    {
        // Create the server channel.
        IpcChannel serverChannel = 
            new IpcChannel("localhost:9090"); 

        // Register the server channel.
        System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(
            serverChannel);

        // Show the name of the channel.
        Console.WriteLine("The name of the channel is {0}.", 
            serverChannel.ChannelName);

        // Show the priority of the channel.
        Console.WriteLine("The priority of the channel is {0}.", 
            serverChannel.ChannelPriority);

        // Show the URIs associated with the channel.
        System.Runtime.Remoting.Channels.ChannelDataStore channelData = 
            (System.Runtime.Remoting.Channels.ChannelDataStore) 
            serverChannel.ChannelData;
        foreach (string uri in channelData.ChannelUris)
        {
            Console.WriteLine("The channel URI is {0}.", uri);
        }

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

The following code example shows a client for this server.

using System;
using System.Runtime.Remoting.Channels.Ipc;
using System.Security.Permissions;

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

        // Register the channel.
        System.Runtime.Remoting.Channels.ChannelServices.
            RegisterChannel(channel);

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

        // Create a message sink.
        string objectUri;
        System.Runtime.Remoting.Messaging.IMessageSink messageSink =
            channel.CreateMessageSink(
                "ipc://localhost:9090/RemoteObject.rem", null,
                out objectUri);
        Console.WriteLine("The URI of the message sink is {0}.",
            objectUri);
        if (messageSink != null)
        {
            Console.WriteLine("The type of the message sink is {0}.",
                messageSink.GetType().ToString());
        }

        // 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());
    }
}

The following code example shows the remote object used by the server and the client.

using System;

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

    public int GetCount()
    {
        Console.WriteLine("GetCount has been called.");
        callCount++;
        return(callCount);
    }
}

System.Object
  System.Runtime.Remoting.Channels.Ipc.IpcChannel
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0
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