DuplexChannelFactory<TChannel> 類別

定義

generic <typename TChannel>
public ref class DuplexChannelFactory : System::ServiceModel::ChannelFactory<TChannel>

public class DuplexChannelFactory<TChannel> : System.ServiceModel.ChannelFactory<TChannel>

type DuplexChannelFactory<'Channel> = class
    inherit ChannelFactory<'Channel>

Public Class DuplexChannelFactory(Of TChannel)
Inherits ChannelFactory(Of TChannel)

類型參數

繼承

Object

CommunicationObject

ChannelFactory

ChannelFactory<TChannel>

DuplexChannelFactory<TChannel>

衍生

System.ServiceModel.Configuration.ConfigurationDuplexChannelFactory<TChannel>

範例

以下範例展示了如何建立通道工廠，並用它來建立和管理通道。

// Construct InstanceContext to handle messages on the callback interface.
// An instance of ChatApp is created and passed to the InstanceContext.
    InstanceContext site = new InstanceContext(new ChatApp());

// Create the participant with the given endpoint configuration.
// Each participant opens a duplex channel to the mesh.
// Participant is an instance of the chat application that has opened a channel to the mesh.

    using (DuplexChannelFactory<IChatChannel> cf =
        new DuplexChannelFactory<IChatChannel>(site,"ChatEndpoint"))
    {
        X509Certificate2 issuer = GetCertificate(
            StoreName.CertificateAuthority,
            StoreLocation.CurrentUser, "CN=" + issuerName,
            X509FindType.FindBySubjectDistinguishedName);
        cf.Credentials.Peer.Certificate =
            GetCertificate(StoreName.My,
            StoreLocation.CurrentUser,
            "CN=" + member,
            X509FindType.FindBySubjectDistinguishedName);
        cf.Credentials.Peer.PeerAuthentication.CertificateValidationMode  =
            X509CertificateValidationMode.Custom;
        cf.Credentials.Peer.PeerAuthentication.CustomCertificateValidator =
            new IssuerBasedValidator();

        using (IChatChannel participant = cf.CreateChannel())
        {
    // Retrieve the PeerNode associated with the participant and register for online/offline events.
    // PeerNode represents a node in the mesh. Mesh is the named collection of connected nodes.
            IOnlineStatus ostat = participant.GetProperty<IOnlineStatus>();
            ostat.Online += new EventHandler(OnOnline);
            ostat.Offline += new EventHandler(OnOffline);

            Console.WriteLine("{0} is ready", member);
            Console.WriteLine("Press <ENTER> to send the chat message.");

    // Announce self to other participants.
            participant.Join(member);
            Console.ReadLine();
            participant.Chat(member, "Hi there - I am chatting");

            Console.WriteLine("Press <ENTER> to terminate this instance of chat.");
            Console.ReadLine();
    // Leave the mesh and close the client.
            participant.Leave(member);
        }
    }

備註

雙工通道允許用戶端與伺服器獨立通訊，讓其中一方能主動呼叫對方。 雙工服務可以向用戶端端點發送訊息，提供類似事件的行為。 雙工通訊發生在用戶端與服務建立會話，並提供服務一個通道，讓該服務能將訊息回傳給用戶端。 建立這些雙工通道時會使用各種 CreateChannel 方法。 雙工訊息模式是 Windows Communication Foundation（WCF）服務可用的三種訊息模式之一。 另外兩種訊息模式是單向與請求回覆。

關於允許用戶端回連線服務的雙工服務的一般討論，請參見 雙工服務。 關於使用通道工廠撰寫Windows Communication Foundation（WCF）用戶端應用程式的概要與步驟，請參見 如何使用 ChannelFactory。 關於如何在實作回調介面以存取使用雙工訊息模式服務的客戶端類別中建立Windows Communication Foundation（WCF）用戶端的程序，請參見 How to： Access Services with a Duplex Contract。