Question

我们使用回调来使用WCF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“none”，但是我收到以下CommunicationException：

套接字连接已中止。这可能是由错误引起的处理您的消息或超过接收超时远程主机或底层网络资源问题。本地套接字超时为'00：00：59.8439844'。

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

需要流安全性 http://www.w3.org/2005/08/addressing/anonymous，但没有安全保障上下文是谈判的。这可能是由远程端点引起的缺少来自其绑定的StreamSecurityBindingElement。

Client Program.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App.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 Service1.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（即安全性为无），但我似乎无法找到错误。谷歌搜索StreamSecurityBindingElement没有很好的explenations ...

Answer 1

我无法复制你的问题，但我有相同的设置和一些我注意到的事情：

在WCF Service1.svc.cs中创建namesapace。

    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">应为<service name="WcfService1.Service1">。服务名称已满服务类型。

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 Service1.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);
        }
    }
}

<强>回调

确保你处理_callback.StreamSignalData（randomNumbers）;当客户端断开连接时您将收到通信异常。

具有安全模式none的net.tcp上的WCF给出了异常

1 个答案: