reverse proxy wcf endpoint hell

uwefms posted on Thursday, October 23, 2014

Hi everybody,

  for quite some days I am chewing on how to call a wcf service for a Silverlight app via apache reverse proxy correctly. The setting is as follows:

Apache reverse proxy called via https:

https://DmzServerURL/SL_App_01 is routed to

http://192.168.2.5/Sl_App_01/

Everything is working fine (Silverlight app shows up) up to the moment I need data from the SQL server. Depending on how I configure the endpoint I get either no errors and nothing is happening up to "No server found" etc.

I can call the svc by:

https://DmzServerURL/SL_App_01/WcfPortal.svc

and can see the correct svc URL using my internal server in the svcutil.exe call. I think I am missing some settings in web.config to use the internal svc adress.

After 3 days of reading the fog becomes thicker instead of getting a clue what to do.

Here are my Application_Startup and web.config:

The actual setting is in index.html - so I can change the endpoind without recompiling.

        private void Application_Startup(object sender, StartupEventArgs e)
        {
			string cDataPortalUrlString   = "";
			string cBasicHttpSecurityMode = "none";
					
			if (e.InitParams.ContainsKey("prodUrl")) 
			{			
				cDataPortalUrlString = e.InitParams["prodUrl"];
			}
			
			if (e.InitParams.ContainsKey("BasicHttpSecurityMode")) 
			{				
				cBasicHttpSecurityMode = e.InitParams["BasicHttpSecurityMode"];							
			}
			
 			Csla.ApplicationContext.DataPortalProxy		= typeof(Csla.DataPortalClient.WcfProxy).AssemblyQualifiedName;
			Csla.ApplicationContext.DataPortalUrlString = cDataPortalUrlString;			
						
			var binding = new BasicHttpBinding();
 
			binding.MaxBufferSize = int.MaxValue; 

                        // some more binding properties

								
			if (cBasicHttpSecurityMode.ToLower() == "none") 
			{
				binding.Security.Mode = BasicHttpSecurityMode.None ;
			}
			else
			{
				binding.Security.Mode = BasicHttpSecurityMode.Transport;
			}
						
			Csla.DataPortalClient.WcfProxy.DefaultBinding = binding;
 
            this.RootVisual = new MainPage();
        }

the crucial line in index.html is:

<param name="initParams" value="prodUrl=https://DmzServerURL/Sl_App_01/WcfPortal.svc, BasicHttpSecurityMode=None" />			

And this is my web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
	
  <connectionStrings>	  
	  <add 
		name="SqlConnStr" 
		connectionString="Data Source=localhost;Initial Catalog=DB_Name;Integrated Security= false;User ID=UserID;Password=*****" 
		providerName="System.Data.SqlClient" />
  </connectionStrings>
	
  <system.serviceModel>
	<!--serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" /-->
    <behaviors>
      <serviceBehaviors>
        <behavior name="WcfPortalBehavior">
		  <!--for http and https -->		  
		  <serviceMetadata httpsGetEnabled="true" httpGetEnabled="true" />
          <serviceDebug includeExceptionDetailInFaults="true" />
        </behavior>
        <behavior name="">
			<!--for http and https -->
			<serviceMetadata httpsGetEnabled="true" httpGetEnabled="true" 
           externalMetadataLocation="http://192.168.2.5/Sl_App_01/WcfPortal.svc" />
          <serviceDebug includeExceptionDetailInFaults="false" />
        </behavior>
      </serviceBehaviors>
	</behaviors>
    <services>
      <service behaviorConfiguration="WcfPortalBehavior" name="Csla.Server.Hosts.Mobile.WcfPortal">		  
		  <endpoint address="" binding="basicHttpBinding" bindingConfiguration="basicHttpBinding_IWcfPortal" contract="Csla.Server.Hosts.Mobile.IWcfPortal">
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
      </service>
    </services>
	  <bindings>
		  <basicHttpBinding>			  
			   <binding name="basicHttpBinding_IWcfPortal" maxBufferSize="2147483647" maxReceivedMessageSize="2147483647">
				   <!--for http -->
				   <security mode="None">				   
				   <!--for https -->
					   <!--security mode="Transport"-->
				  </security>
			  </binding>
		  </basicHttpBinding>

	  </bindings>

  </system.serviceModel>
  <system.web>
    <compilation targetFramework="4.5" />
    <authentication mode="Windows" />
    <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID" />
  </system.web>
  <runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
      <dependentAssembly>
        <assemblyIdentity name="Csla" publicKeyToken="93be5fdc093e4c30" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-4.5.601.0" newVersion="4.5.601.0" />
      </dependentAssembly>
    </assemblyBinding>
  </runtime>
</configuration>

Needless to say that the app works perfectly in an  local environment or without the reverse proxy on a web server.

Sorry for the long post - maybe somebody can help or at least push me in the right direction.

    regards

       TIA

         Uwe