Question

我有一个代表WCF-Host的Windows服务和一个代表WCF-Client的WPF-Client-Application。通信应该是双工的，所以我选择了WSDualHttpBinding。首先，我安装并启动我的服务，打开WCF连接后，我启动我的WPF应用程序，我得到以下错误（我翻译它）：没有找到合同的默认端点 \＆＃34; WCFCloudManagerFolderWatcherService.Interfaces.IFilesDuplex \＆＃34;在服务模型客户端配置部分中指。这可能是由于：没有找到配置文件的目的或者在客户端元素中没有找到与此合同相对应的端点元素。

合同： IFilesDuplex-合同：

import logging
logging.basicConfig()

logger = logging.getLogger("mylogger")
logger.info("test")
logger.debug("test")

IFilesDuplexCallback：

[ServiceContract(Namespace = "http://Microsoft.ServiceModel.Samples", SessionMode = SessionMode.Required,
            CallbackContract = typeof(IFilesDuplexCallback))]
public interface IFilesDuplex
{
    [OperationContract(IsOneWay = true)]
    void Update();
}

客户机侧 的CallbackHandler：

interface IFilesDuplexCallback
{
    [OperationContract(IsOneWay = true)]
    void Equals(string[] result);
}

客户本身：

class CallbackHandler : IFilesDuplexCallback
{
    public event Action<string[]> ReceivedList = delegate { };

    public void Equals(string[] result)
    {
        this.ReceivedList(result);
    }
}

来自主窗口的代码，引发错误：

class FilesDuplexClient : DuplexClientBase<IFilesDuplex>, IFilesDuplex
{
    public FilesDuplexClient(InstanceContext callbackCntx)
        : base(callbackCntx)
    {            
    }

    public void Update()
    {
        base.Channel.Update();
    }
}

Serverside（Windows服务） FileProtocoll-Class（服务器代码）

CallbackHandler ch = new CallbackHandler();
        ch.ReceivedList += ch_ReceivedList;

        // Construct InstanceContext to handle messages on callback interface
        InstanceContext instanceContext = new InstanceContext(ch);

        // Create a client
        FilesDuplexClient client = new FilesDuplexClient(instanceContext);
        client.Update();

OnStart-Method（在线程中）中的代码：

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
public class FileProtocoll : IFilesDuplex
{
    IFilesDuplexCallback Callback
    { get { return OperationContext.Current.GetCallbackChannel<IFilesDuplexCallback>(); } }

    void IFilesDuplex.Update()
    {
        //....
        Callback.Equals(null);// just a dummy
        //...
    }

}

OnStop-Method中的代码（在线程中）：

// Step 1 Create a URI to serve as the base address.
        Uri baseAddress = new Uri("http://localhost:8899/CloudManager/CommunicationChannel1");

        // Step 2 Create a ServiceHost instance
        if (selfHost != null)
        {
            selfHost.Close();
        }

        selfHost = new ServiceHost(typeof(FileProtocoll), baseAddress);

        try
        {
            // Step 5 Start the service.
            selfHost.Open();



        }
        catch (CommunicationException ce)
        {
             selfHost.Abort();
        }

App.config中：

if (selfHost != null)
        {
            if (selfHost.State != CommunicationState.Closed)
            { 
                selfHost.Close();
            }

            selfHost = null;
        }

Answer 1

我终于明白了。不得不对我的客户端app.config进行一些更改，并且必须关闭安全性。

<强>的app.config（客户端）：

<!-- WCF Client information-->
<system.serviceModel>
<bindings>
  <wsDualHttpBinding>
    <binding name="WSDualHttpBinding_IFilesDuplex">
      <security mode="None"/>
    </binding>
  </wsDualHttpBinding>
</bindings>
<client>
  <endpoint
    address="http://localhost:8899/CloudManager/CommunicationChannel1"
    binding="wsDualHttpBinding"
    bindingConfiguration="WSDualHttpBinding_IFilesDuplex"
        contract="WCFCloudManagerFolderWatcherService.Interfaces.IFilesDuplex"
    name="WSDualHttpBinding_IFilesDuplex">
    <identity>
      <userPrincipalName value="localhost"/>
    </identity>
  </endpoint>
</client>

并且在服务器端的app.config中我也可以设置

<security mode="None"/>

现在连接正常。

＆＃34;未找到默认端点＆＃34;启动WCF客户端时

1 个答案: