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Publishing Schemas As A Webservice With Exception Handling

Where you need to publish an schema or orchestration as service:
Scenario where the communication has to happen in real time for example someone wants to call an orchestration from an UI or wants to post a request to BizTalk.

How do you Do That:

Develop a schema project as usual. If required you can pick an orchestration as the subscriber or leave it. Since you are publishing the Schema it will be loosely coupled and you can have multiple subscribers to the same message type.

Once done please go ahead and deploy the schema/solution.(In the case of orchestration you will like to have your activate receive  shape directly bound to msgbox) Also please consider having a fault port in your orchestration. That way you will be able to return a custom exception in case of any issues from BizTalk.

Some Unique Errors You May Encounter are:
The Messaging Engine failed to register the adapter for “WCF-BasicHttp” for the receive location : Solution your app pool id has to be part of BizTalk Admin group.
must receive before sending a message whose message type corresponds to a request response operation on an implemented port.You need to move your second send shapes under a condition branch as shown in the picture.

This scenario we are going to design a synchronous BizTalk service which will return a response for each request.
1> Define your request response contracts.For this example I am going to create an orchestration which will consume the request and create a response. Make sure the activate receive shape is directly bound to msgbox.
This is how your solution is going to look like.

2>Once done please go ahead and deploy it.Start the orchestration.

3>Go to BizTalk WCF publishing wizard and follow the following steps( BizTalk WCF publishing Wizard can be found in Visual studio for 2009 or in the Start>>program >> Microsoft BizTalk server >>). I am going to design a HTTP based 2 way communication here. Please follow the following steps as showed in the screenshot below.

note:We can also publish an orchestration as a web service but using schema gives you loosely coupled architecture. In the case of schema you can define multiple subscribers at your convenience.


Once you are done with the Wizard it is going to create one receive port and location + one IIS application.

The app pool for the BizTalk application in IIS has to be a part of Admin group and you will also need to enable directory browsing.




4>Once done this is going to create a two way receive location and port. Please go ahead and start that. The solution is ready to be tested.

How To Test:
1>Go to your IIS and take the WCF endpoint. You can use this endpoint in SOAP UI/Stylus.. to post a request and get the response.

2>Using A Windows Client:


Once the project is created right click on references and pick add service reference


This step will create a service reference for you. Now open the program.cs and make necessary changed to it.


Run it and you will see the BizTalk process invoked.



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