What is use of message contract? [Resolved]

If we need to intercept the SOAP message that is passed between service and client, we need Message Contract which provides complete control over the SOAP message. It is a structural contract.

e.g.

[MessageContract(IsWrapped = false)]

public class EmployeeInfoRequest

{

       [MessageHeader()]

       public string AuthCode;



      [MessageBodyMember()]

      public int EmployeeId;



      [MessageBodyMember()]

      public string EmployeeName;

}



[MessageContract(IsWrapped = false)]

public class EmployeeInfoResponse

{

      [MessageBodyMember()]

      public EmployeeInfo EmpInfo;

}



[ServiceContract] 

public interface IEmployeeService 

{

        [OperationContract] 

        EmployeeInfoResponse GetAllEmployeeInfo(EmployeeInfoRequest empInfo); 

}



public class EmployeeService : IEmployeeService 

{

     public EmployeeInfoResponse GetAllEmployeeInfo(EmployeeInfoRequest empInfo)

     {

               //Validation Check

               if (empInfo.bearerToken != "hPOCxaXYeNJsIqG4PNYzNa9BvWy37dgvbtZQZ2qYE79R-7l3j-Skhwj0xDLgONd")

               {

                       //unauthorised bad request



		      return BadRequest();

               } 	    

		// authorized code 

		return  valid EmployeeInfoResponse ;

     }

}

In the above piece of code we are using the SOAP message header for storing the bearer token / authentication code while calling the service method. It is needed for a valid Employee authentication for accessing the other assets/methods/services of the Employees. In such a scenario, SOAP message header is the most secure place to do so.

Also DNF has a very nice article on the same available at
http://www.dotnetfunda.com/articles/show/2559/how-to-implement-message-contracts

Hope this will be helpful.

Thanks

--
Thanks & Regards,
RNA Team

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