WCF分布式开发常见错误(24):the SSL/TLS secure channel with authority

  使用传输安全模式,证书建立SSL,宿主端口证书配置完毕,但是客户调用服务出错。
【1】错误信息:
Could not establish trust relationship for the SSL/TLS secure channel with authority 'computer:9001'.
不能和授权计算机为 SSL/TLS 安全通道建立信任关系.
WCF中文论坛问题连接: http://social.microsoft.com/Forums/zh-CN/wcfzhchs/thread/1591a00d-d431-4ad8-bbd5-34950c39d563
错误截图:
【2】配置信息:
   2.1服务端配置:
   服务端设置证书,不采用客户端安全认证。安全方式是传输安全。服务端配置信息如下:
< services >
      
< service behaviorConfiguration = " WCFService.WCFServiceBehavior "  name = " WCFService.WCFService "   >
        
< endpoint 
          address
= " WCFService "  
          binding
= " wsHttpBinding "  
          bindingConfiguration
= " BasicWithTransport "
          contract
= " WCFService.IWCFService " >
        
</ endpoint >
        
< endpoint address = " mex "  binding = " mexHttpsBinding "  contract = " IMetadataExchange "   />
        
< host >
          
< baseAddresses >
            
< add baseAddress = " https://computer:9001/ " />
          
</ baseAddresses >
        
</ host >
      
</ service >
    
</ services >
    
< behaviors >
      
< serviceBehaviors >
        
< behavior name = " WCFService.WCFServiceBehavior " >
          
< serviceMetadata httpsGetEnabled = " true "   />
          
< serviceDebug includeExceptionDetailInFaults = " false "   />
          
< serviceCredentials >
              
< serviceCertificate  storeName = " My "   x509FindType = " FindBySubjectName "  findValue = " WCFHTTPS "  storeLocation = " LocalMachine " />
          
</ serviceCredentials >
        
</ behavior >
      
</ serviceBehaviors >
    
</ behaviors >
    
< bindings >
    
< wsHttpBinding >
      
< binding name = " BasicWithTransport " >
        
< security mode = " Transport " >
          
< transport clientCredentialType = " None " />
        
</ security >
      
</ binding >
    
</ wsHttpBinding >
    
</ bindings >
    2.2客户端配置:
    客户端添加服务引用后,直接实例化类调用WCF服务,结果就出现不能为SSL建立信任关系错误。

                WCFClient.ClientProxy.WCFServiceClient wcfServiceProxyHttp 
=   new  WCFClient.ClientProxy.WCFServiceClient( " WSHttpBinding_IWCFService " );
                
// 通过代理调用SayHello服务
                   string  sName  =   " Frank Xu Lei WSHttpBinding " ;
                
string  sResult  =   string .Empty;

                sResult 
=  wcfServiceProxyHttp.SayHello(sName);
【3】问题分析:
       Could not establish trust relationship for the SSL/TLS secure channel with authority 'computer:9001'.
不能和授权计算机为 SSL/TLS 安全通道建立信任关系.
       实际原因和证书有很大关系,这里证书是跟证书颁发机构信任的证书,在客户端和服务端建立安全会话的时候,无法信任此证书。
    另外一个可能的原因是你其他域里也使用此一个证,这个也有可能导致错误。
【4】解决办法:
    3.1:定义一个类,来对远程X.509证书的验证,进行处理,返回为true.我们要自己定义一个类,然后在客户单调用WCF服务之前,执行一次即可。代码如下:
  public   static   class  Util
    {
        
///   <summary>
        
///  Sets the cert policy.
        
///   </summary>
         public   static   void  SetCertificatePolicy()
        {
            ServicePointManager.ServerCertificateValidationCallback
                       
+=  RemoteCertificateValidate;
        }

        
///   <summary>
        
///  Remotes the certificate validate.
        
///   </summary>
         private   static   bool  RemoteCertificateValidate(
           
object  sender, X509Certificate cert,
            X509Chain chain, SslPolicyErrors error)
        {
            
//  trust any certificate!!!
            System.Console.WriteLine( " Warning, trust any certificate " );
            
return   true ;
        }
    }
     你要在调用操作点先调用这个方法: Util.SetCertificatePolicy();
                sResult = wcfServiceProxyHttp.SayHello(sName);
    3.2:就是需要你在客户端和服务端各安装一个跟证书授权机构。然后制作一受信任的根证书机构的证书。可以参考这个:
http://www.codeplex.com/WCFSecurity/Wiki/View.aspx?title=How%20To%20-%20Create%20and%20Install%20Temporary%20Certificates%20in%20WCF%20for%20Message%20Security%20During%20Development&referringTitle=How%20Tos
    【5】总结:
      对Windows Server服务器产品开发部署WCF服务的时候才采用的第二种机制。需要授权的证书机构颁发的证书。对于普通的学习第一种方式就可以了。
     WCF安全开发编程实践,是一个比较复杂的过程,除了需要掌握基本的安全知识以外,要需要熟练运用各种证书制作,安装、SSL证书httpcfg.配置等工具。在Windows Server2003,Vitsa系统下差别还很大,普通的XP系统下开发学习更是需要安装一写服务,而且调试过程也比较繁琐,一旦有点配置不对,就会出现异常。需要耐心去学习。
  
参考资料:
1. http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/bb0fc194-5bf3-4c24-94bb-c86f94c76bc2
2. http://www.codemeit.com/wcf/wcf-could-not-establish-trust-relationship-for-the-ssltls-secure-channel-with-authority.html

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