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我们正在使用回调使用 WCF 流式传输数据。WCF 托管在 IIS 中（默认设置，只是将 net.tcp 添加到协议中）。

我们正在尝试禁用 WCF 上的安全性，因此我在客户端和服务器上都将安全模式设置为“无”，但我收到以下 CommunicationException：

套接字连接被中止。这可能是由于处理您的消息时出错或远程主机超出接收超时，或者是潜在的网络资源问题造成的。本地套接字超时为“00:00:59.8439844”。

我已经对服务进行了跟踪，并且 TraceViewer 给了我以下异常（System.ServiceModel.ProtocolException）：

http://www.w3.org/2005/08/addressing/anonymous需要流安全 ，但没有协商安全上下文。这可能是由于远程端点在其绑定中缺少 StreamSecurityBindingElement 造成的。

客户端程序.cs：

using System;
using System.ServiceModel;
using WcfClient.ServiceReference1;

class Program {
    static void Main() {
        Callback callback = new Callback();
        InstanceContext context = new InstanceContext(callback);
        Service1Client service1Client = new Service1Client(context, 
                                                           "NetTcpBinding_IService1");


        service1Client.GetData(0);
        Console.Read();
        service1Client.Stop();
    }
}

internal class Callback : IService1Callback {
    public void StreamSignalData(int[] result) {
        foreach (int i in result) {
            Console.WriteLine(DateTime.Now.ToString("dd.MM.yyyy HH:mm:ss.fff") + 
                              ": " + i);
        }
    }
}

客户端应用程序.Config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.serviceModel>
    <bindings>
      <netTcpBinding>
        <binding name="NetTcpBinding_IService1">
          <security mode="None" />
        </binding>
      </netTcpBinding>
      <wsDualHttpBinding>
        <binding name="WSDualHttpBinding_IService1">
          <reliableSession ordered="true" />
          <security mode="None" />
        </binding>
      </wsDualHttpBinding>
    </bindings>
    <client>
      <endpoint address="http://localhost/wcf-error/Service1.svc" 
        binding="wsDualHttpBinding"
        bindingConfiguration="WSDualHttpBinding_IService1" 
        contract="ServiceReference1.IService1"
        name="WSDualHttpBinding_IService1" />
      <endpoint address="net.tcp://localhost/wcf-error/Service1.svc"
        binding="netTcpBinding" bindingConfiguration="NetTcpBinding_IService1"
        contract="ServiceReference1.IService1" name="NetTcpBinding_IService1">
      </endpoint>
    </client>
  </system.serviceModel>
</configuration>

WCF 服务1.svc.cs

using System;
using System.Net.Security;
using System.ServiceModel;
using System.Threading;

[ServiceContract(SessionMode = SessionMode.Required, 
                 CallbackContract = typeof(IStreamCallback), 
                 ProtectionLevel = ProtectionLevel.None)]
public interface IService1 {
    [OperationContract]
    void GetData(int value);

    [OperationContract]
    void Stop();
}

public interface IStreamCallback {
    [OperationContract(IsOneWay = true)]
    void StreamSignalData(int[] result);
}

[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
[CallbackBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
public class Service1 : IService1 {
    private Timer _timer;

    private readonly IStreamCallback _callback =
            OperationContext.Current.GetCallbackChannel<IStreamCallback>();
    public void GetData(int value) {
        _timer = new Timer(StreamData, null, 0, 500);
    }

    public void Stop() {
        _timer.Dispose();
    }

    private void StreamData(object state) {
        int[] randomNumbers = new int[50];
        Random random = new Random();
        for (int i = 0; i < 50; i++) {
            randomNumbers[i] = random.Next(100);
        }
        _callback.StreamSignalData(randomNumbers);
    }
}

WCF Web.config

<?xml version="1.0"?>
<configuration>
  <system.web>
    <compilation targetFramework="4.0" debug="true"/>
  </system.web>
  <system.serviceModel>
    <bindings>
      <netTcpBinding>
        <binding name="netTcpBinding" >
          <security mode="None" />
        </binding>
      </netTcpBinding>
      <wsDualHttpBinding>
        <binding name="wsDualHttpBinding">
          <security mode="None" />
        </binding>
      </wsDualHttpBinding>
    </bindings>
    <protocolMapping>
      <add scheme="http" binding="wsDualHttpBinding"/>
    </protocolMapping>
    <services>
      <service name="Service">
        <endpoint address="" binding="wsDualHttpBinding" 
          bindingConfiguration="wsDualHttpBinding"
          name="EndPointHTTP" contract="WcfService1.IService1">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" name="mex"
          contract="IMetadataExchange" />
        <endpoint binding="netTcpBinding" bindingConfiguration="netTcpBinding"
          name="EndPointTCP" contract="WcfService1.IService1" />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
          <useRequestHeadersForMetadataAddress />
          <dataContractSerializer />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
  <system.webServer>
    <modules runAllManagedModulesForAllRequests="true"/>
  </system.webServer>
</configuration>

任何想法这可能是什么？谷歌上的大多数点击都说客户端和服务器上的配置应该是相同的（即没有安全性），但我似乎找不到错误。谷歌搜索 StreamSecurityBindingElement 没有很好的解释......

4

1 回答 1

1

我无法复制您的问题，但我有相同的设置和我注意到的几件事：

在 WCF Service1.svc.cs 中创建命名空间。

    namespace WcfService1
    {
        [ServiceContract(SessionMode = SessionMode.Required,
            CallbackContract = typeof (IStreamCallback),
            ProtectionLevel = ProtectionLevel.None)]
        public interface IService1
        {
        .....
        [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
        [CallbackBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
        public 

    class Service1 : IService1
    {

<service name="Service">应该是<service name="WcfService1.Service1">。服务名称是服务的完整类型。

配置中的服务部分：

<services>
    <service name="WcfService1.Service1">
        <endpoint address="" binding="wsDualHttpBinding"
            bindingConfiguration="wsDualHttpBinding"
            name="EndPointHTTP" contract="WcfService1.IService1">
            <identity>
                <dns value="localhost" />
            </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" name="mex"
            contract="IMetadataExchange" />
        <endpoint binding="netTcpBinding" bindingConfiguration="netTcpBinding"
            name="EndPointTCP" contract="WcfService1.IService1" />
    </service>
</services>

WCF 服务1.svc.cs

using System;
using System.Net.Security;
using System.ServiceModel;
using System.Threading;

namespace WcfService1
{
    [ServiceContract(SessionMode = SessionMode.Required,
        CallbackContract = typeof (IStreamCallback),
        ProtectionLevel = ProtectionLevel.None)]
    public interface IService1
    {
        [OperationContract]
        void GetData(int value);

        [OperationContract]
        void Stop();
    }

    public interface IStreamCallback
    {
        [OperationContract(IsOneWay = true)]
        void StreamSignalData(int[] result);
    }

    [ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
    [CallbackBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
    public class Service1 : IService1
    {
        private Timer _timer;

        private readonly IStreamCallback _callback =
            OperationContext.Current.GetCallbackChannel<IStreamCallback>();

        public void GetData(int value)
        {
            _timer = new Timer(StreamData, null, 0, 500);
        }

        public void Stop()
        {
            _timer.Dispose();
        }

        private void StreamData(object state)
        {
            int[] randomNumbers = new int[50];
            Random random = new Random();
            for (int i = 0; i < 50; i++)
            {
                randomNumbers[i] = random.Next(100);
            }
            _callback.StreamSignalData(randomNumbers);
        }
    }
}

打回来

确保您处理 _callback.StreamSignalData(randomNumbers); 当客户端断开连接时。你会得到一个通信异常。

于 2013-05-12T18:54:56.570 回答