Efficient reverse proxy for Schema based BizTalk webservices

Question

I've got a few webservices hosted on BizTalk I'm wanting to expose with a reverse proxy.
Checking through this article it seems there is some disconnect.
http://msdn.microsoft.com/en-us/magazine/cc748658.aspx
The article outlines how to do this with a webservice generated from an orchestration. But I created my webservices from schemas. The structure of my asmx.cs doesn't appear to be the same. See Figure 8 in the article.
When I try to do
AZDHS_AIE_Internal.AIE objWebServiceMethodCall new AZDHS_AIE_Internal.AIE();
objWebServiceMethodCall.Url = "real URL goes here";
There is no Url member inside the instance of AIE that is created. It is the proper class which contains the web methods, so I was surprised to not see it there.
Anyone else tried to get this scenario working before? I'm not finding much resources for schema based webservices, only orchestration based ones.

Answer 1

Alright, got it working.
Here the short story of how to get this working. Make a copy of the generated webservice solution from BizTalk. In it you'll see there is a
DataTypes.cs class. 
Next, you'll generate a proxy class of the target webservice using the visual studio command line wsdl tool (wsdl http://url/svc.asmx?wsdl). Make sure this class is named differently than the actual webservice is since that is the same
name you've got in the BizTalk generated webservice solution.
In the new proxy class replace the return and parameter types in the web methods to be the corresponding types in the
DataTypes.cs class.
In the BizTalk webservice code go to your web method where it currently puts the received message into the messagebox database. There you will create a new instance of the new proxy class and call the corresponding web method, which now has the same type
definition in both the proxy class and the BizTalk generated class.
And that's all. Build and deploy to a server anywhere with access to the actual BizTalk server and your calls will bounce off the webserver and go to BizTalk.