c# - WCF、NetTcpBinding、Streamed 传输模式可以双工吗？

Question

我将 NetTcpBinding 与 Streamed TransferMode 结合使用。现在我尝试将回调实现为双工，但收到错误消息。可以将 NetTcpBinding 与 Streamed TransferMode 一起使用并使用(双工)回调服务契约(Contract)吗？的背景:- 我使用 NetTcpBinding 因为它速度快而且没有 nat 问题- 我使用流模式，因为我也传输大文件。

配置:

 <netTcpBinding>
    <binding name="DuplexBinding" transferMode="Streamed"
                closeTimeout="00:10:00"  openTimeout="00:10:00" receiveTimeout="00:10:00" sendTimeout="00:10:00"  transactionFlow="false" hostNameComparisonMode="StrongWildcard" maxBufferPoolSize="104857600" maxReceivedMessageSize="104857600"
             >
      <readerQuotas maxDepth="104857600" maxStringContentLength="104857600" maxArrayLength="104857600" maxBytesPerRead="104857600" maxNameTableCharCount="104857600"/>
      <reliableSession enabled="true" ordered="true" inactivityTimeout="00:10:00"/>
      <security mode="None" />
    </binding>
  </netTcpBinding>

契约(Contract):

IMyDataService.cs

   [ServiceContract(CallbackContract = typeof(INotifyCallback))]
    public interface IMyDataService
    {
        [OperationContract(ProtectionLevel = System.Net.Security.ProtectionLevel.None)]
        [FaultContract(typeof(MyFaultException))]
        [FaultContract(typeof(MyUserAlreadyLoggedInFaultException))]
        [FaultContract(typeof(AuthorizationFaultException))]
        Guid Authenticate(Guid clientID, string userName, string password, bool forceLogin);
    }


INotifyCallback.cs

    public interface INotifyCallback
    {
        [OperationContract(IsOneWay = true)]
        void ShowMessageBox(string message);
    }

设置 transferMode="Streamed"时出现错误

Contract requires Duplex, but Binding 'NetTcpBinding' doesn't support it or isn't configured properly to support it.

大家可以建议谢谢

Answer 1

在您的客户端代码中，确保您使用的是 DuplexChannelFactory创建到服务器的 channel :

INotifyCallback callbackObject = new NotifyCallbackImpl(); //your concrete callback class
var channelFactory = new DuplexChannelFactory<IMyDataServce>(callbackObject); //pick your favourite constructor!
IMyDataService channel = channelFactory.CreateChannel();
try {
    var guid = channel.Authenticate(....);
    //... use guid...
} finally {
    try {
        channel.Close();
    } catch (Exception) {
        channel.Abort();
    }
}

[编辑] 自动生成服务引用的代理应该扩展 DuplexClientBase .