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c# - 远程主机使用 WCF 关闭了现有连接

问题描述

我已经使用 net tcp 绑定开发了 WCF windows 服务。当 wcf 客户端和 wcf 服务都在域中（在两个不同的系统中）时，它工作正常

当两个系统都在工作组而不在域中时出现错误。

抛出异常。来源：System.ServiceModel 4.0.0.0。异常详细信息：System.ServiceModel.CommunicationException：套接字连接已中止。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“04:59:59.795578​​1”。---> System.Net.Sockets.SocketException: 现有连接被远程主机强行关闭

我尝试过的事情：

标签： c#wcf

解决方案

首先，您需要在请求时添加 windows 凭据，因为 nettcpbinding 默认为 windows 身份验证：

    ServiceReference1.CalculatorClient calculatorClient = new ServiceReference1.CalculatorClient();
   calculatorClient.ClientCredentials.Windows.ClientCredential.UserName = "Administrator";
   calculatorClient.ClientCredentials.Windows.ClientCredential.Password = "Password";

如果添加凭据后仍有问题，还需要添加 mex 端点：

    <endpoint address="mex"
    binding="mexTcpBinding"
    contract="IMetadataExchange"></endpoint>

这是我的 App.config：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2" />
    </startup>

    <system.serviceModel>
        <services>
            <service name="ConsoleApp5.CalculatorService" behaviorConfiguration="ServiceBehavior">
                <host>
                    <baseAddresses>
                        <add baseAddress="net.tcp://localhost:10234/GettingStarted/"/>
                    </baseAddresses>
                </host>
                <endpoint address="Test"
                          binding="netTcpBinding"
                          contract="ConsoleApp5.ICalculator"/>
                <endpoint address="mex"
                          binding="mexTcpBinding"
                          contract="IMetadataExchange"></endpoint>
            </service>
        </services>


        <behaviors>
            <serviceBehaviors>
                <behavior name="ServiceBehavior">
                    <serviceMetadata/>
                </behavior>
            </serviceBehaviors>
        </behaviors>
    </system.serviceModel>

</configuration>

更新

将 Mode 值设置为 Message：

<binding name="Binding">
          <security mode="Message">
            <message clientCredentialType="Certificate" />
          </security>
        </binding>

这是我的 App.config：

<?xml version="1.0"?>
<configuration>

  <system.serviceModel>
    <services>
      <service name="Microsoft.Samples.X509CertificateValidator.CalculatorService" behaviorConfiguration="CalculatorServiceBehavior">
        <!-- use host/baseAddresses to configure base address provided by host -->
        <host>
          <baseAddresses>
            <add baseAddress="net.tcp://localhost:8001/servicemodelsamples/service"/>
          </baseAddresses>
        </host>
        <!-- use base address specified above, provide one endpoint -->
        <endpoint address="certificate" binding="netTcpBinding" bindingConfiguration="Binding" contract="Microsoft.Samples.X509CertificateValidator.ICalculator"/>
         
      </service>
    </services>

    <bindings>
        <netTcpBinding>
        <!-- X509 certificate binding -->
        <binding name="Binding">
          <security mode="Message">
            <message clientCredentialType="Certificate" />
          </security>
        </binding>
      </netTcpBinding>
    </bindings>

    <behaviors>
        
      <serviceBehaviors>
        <behavior name="CalculatorServiceBehavior">
          <serviceDebug includeExceptionDetailInFaults="true"/>
            <serviceMetadata/>
          <serviceCredentials>
            <!-- 
            The serviceCredentials behavior allows one to specify authentication constraints on client certificates.
            -->
            <clientCertificate>
             
                <authentication certificateValidationMode="None" revocationMode="NoCheck"/>
            </clientCertificate>
            <!-- 
            The serviceCredentials behavior allows one to define a service certificate.
            A service certificate is used by a client to authenticate the service and provide message protection.
            This configuration references the "localhost" certificate installed during the setup instructions.
            -->
            <serviceCertificate findValue="localhost" storeLocation="LocalMachine" storeName="My" x509FindType="FindBySubjectName"/>
          </serviceCredentials>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    
  </system.serviceModel>

<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup></configuration>

如果问题仍然存在，请随时告诉我。

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