【WCF】wsHttpBinding和SSO Server使用的问题，大家进来讨论一下

     现在的项目是一个C/S的程序，其访问流程是这样的：
  
  Client Û WCF Server Û DB Server
  
  系统中的WCF访问数据使用了wsHttpBinding和basicHttpBinding两种协议。其中wsHttpBinding的服务中用到了Session。
  
  Config文件中是这样配置的：
  
  
  
  配置文件
  <endpoint address="http://ap106vm06/AegisService/AegisService.svc"
   binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IAegisService"
   contract="AegisService.IAegisService" name="WSHttpBinding_IAegisService">
   <identity>
   <dns value="Aegis" />
   </identity>
  </endpoint>
  <endpoint address="http://ap106vm06/AegisService/AegisServiceBasic.svc"
   binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IAegisServiceBasic"
   contract="AegisServiceBasic.IAegisServiceBasic" name="BasicHttpBinding_IAegisServiceBasic">
   <identity>
   <dns value="Aegis" />
   </identity>
  </endpoint>
  
  
  一切正常。
  
  但是现在客户要求所有的访问要经过一台SSO服务器（Hp公司的IceWall服务器）,即数据访问流程变成了如下：
  
  Client Û SSO Server(Ice Wall) Û WCF Server Û DB Server
  
  于是我把配置文件改成如下形式：
  
  
  
  
  
  修改后的配置文件
  <endpoint address="http://172.22.1.13/fw/dfw/GU019/AegisService/AegisService.svc"
   binding="wsHttpBinding" bindingConfiguration="WSHttpBinding_IAegisService"
   contract="AegisService.IAegisService" name="WSHttpBinding_IAegisService">
   <identity>
   <dns value="Aegis" />
   </identity>
  </endpoint>
  <endpoint address="http://172.22.1.13/fw/dfw/GU019/AegisService/AegisServiceBasic.svc"
   binding="basicHttpBinding" bindingConfiguration="BasicHttpBinding_IAegisServiceBasic"
   contract="AegisServiceBasic.IAegisServiceBasic" name="BasicHttpBinding_IAegisServiceBasic">
   <identity>
   <dns value="Aegis" />
   </identity>
  </endpoint>
  
  
  理论上，访问http://172.22.1.13/fw/dfw/GU019/XXX和访问http://ap106vm06/XXX是等价的，而且在浏览器中
  
  http://172.22.1.13/fw/dfw/GU019/AegisService/AegisService.svc能够正常访问。
  
  程序运行的时候，basicHttpBinding的服务能正常执行，但是wsHttpBinding的服务却会抛出异常。
  
  异常信息是：
  
  程序找不到EndPoint http://172.22.1.13/fw/dfw/GU019/AegisService/AegisService.svc，这可能是因为Address
  
  或Soap Action没有设置正确。
  
  Call Stack如下：
  
  
  
  异常堆栈
  Server stack trace:
   at System.ServiceModel.Channels.ClientReliableSession.ProcessCreateSequenceResponse(Message response, DateTime start)
   at System.ServiceModel.Channels.ClientReliableSession.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ReliableRequestSessionChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)
   at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.CallOpenOnce.System.ServiceModel.Channels.ServiceChannel.ICallOnce.Call(ServiceChannel channel, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.CallOnceManager.CallOnce(TimeSpan timeout, CallOnceManager cascade)
   at System.ServiceModel.Channels.ServiceChannel.EnsureOpened(TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
   at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
  
  Exception rethrown at [0]:
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Nichicom.Wel.Mother.WelOperator.AegisService.IAegisService.ExecuteScalar(Boolean IsInTransaction, String strConnToken, WelSqlCommandStruct welSqlCommands)
   at Nichicom.Wel.Mother.WelOperator.AegisService.AegisServiceClient.ExecuteScalar(Boolean IsInTransaction, String strConnToken, WelSqlCommandStruct welSqlCommands) in C:\WelMotherAegis\01_AegisSource\Common\WelOperator\Service References\AegisService\Reference.cs:line 456
   at Nichicom.Wel.Mother.WelOperator.ServiceAccess.ExecuteScalar(Boolean IsInTransaction, WelSqlCommand welSqlCommands) in C:\WelMotherAegis\01_AegisSource\Common\WelOperator\WelDBOperator\ServiceAccess.cs:line 197
  
  
  
  
  不太理解为什么basicHttpBinding可以但是wsHttpBinding不行，看错误好像是在ReliableRequestSessionChannel打开的过程中出错，
  
  难道WCF的Session需要建立持久通道，在我印象中，WCF应该是通过Soap消息头上的Session ID支持Session的。
  
  也许我的理解有偏差，大家有什么建议吗？希望不吝赐教，也可以一起讨论一下，多谢。