WS-AtomicTransaction issue in WCF Adapter

I think the error message might be odd - but have you configured WS-AT on your machine?

http://msdn2.microsoft.com/en-us/library/ms733943.aspx

JonFlanders at 2007-10-2 >

Yes - you need to be using https - http://msdn2.microsoft.com/en-us/library/ms733943.aspx

The url would then have https in the send port configuration.

HTH

JonFlanders at 2007-10-2 >

Hi Jon,

I was having the same issue and using the instructions you gave got past this. However I now have another issue:

When I try to use a flowed transaction service via BizTalk, I get the following:

The service operation requires a transaction to be flowed.

I have a .net client that works with the service just fine:

The code for the service is:

{
// Define a service contract.
[ServiceContract(Namespace="http://Microsoft.ServiceModel.Samples")]
public interface ICalculator
{
[OperationContract]
[TransactionFlow(TransactionFlowOption.Mandatory)]
double Add(double n1, double n2);
[OperationContract]
[TransactionFlow(TransactionFlowOption.Mandatory)]
double Subtract(double n1, double n2);
[OperationContract]
[TransactionFlow(TransactionFlowOption.Mandatory)]
double Multiply(double n1, double n2);
[OperationContract]
[TransactionFlow(TransactionFlowOption.Mandatory)]
double Divide(double n1, double n2);
}

// Service class which implements the service contract.
[ServiceBehavior(TransactionIsolationLevel = System.Transactions.IsolationLevel.Serializable)]

public class CalculatorService : ICalculator
{
[OperationBehavior(
TransactionScopeRequired = true)]

public double Add(double n1, double n2)
{
return n1 + n2;
}
[OperationBehavior(
TransactionScopeRequired = true)]

public double Subtract(double n1, double n2)
{
return n1 - n2;
}
[OperationBehavior(
TransactionScopeRequired = true)]

public double Multiply(double n1, double n2)
{
return n1 * n2;
}
[OperationBehavior(
TransactionScopeRequired = true)]

public double Divide(double n1, double n2)
{
return n1 / n2;
}
}

}

The working client looks like this:

{
// Create a client
CalculatorClient client = new CalculatorClient("ClientEndpoint");
using (TransactionScope ts = new TransactionScope(
TransactionScopeOption.RequiresNew))
{

// Call the Add service operation.
double value1 = 100.00D;
double value2 = 15.99D;
double result = client.Add(value1, value2);
Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result);

// Call the Subtract service operation.
value1 = 145.00D;
value2 = 76.54D;
result = client.Subtract(value1, value2);
Console.WriteLine("Subtract({0},{1}) = {2}", value1, value2, result);

// Call the Multiply service operation.
value1 = 9.00D;
value2 = 81.25D;
result = client.Multiply(value1, value2);
Console.WriteLine("Multiply({0},{1}) = {2}", value1, value2, result);

// Call the Divide service operation.
value1 = 22.00D;
value2 = 7.00D;
result = client.Divide(value1, value2);
Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result);
ts.Complete();
}
//Closing the client gracefully closes the connection and cleans up resources
client.Close();

Console.WriteLine();
Console.WriteLine("Press <ENTER> to terminate client.");
Console.ReadLine();
}
}

In BizTalk I have the enable transaction tickbox on the bindings tab set when I import the WCF service. One thing of interest to me is that fot the .net client when I run svcutil, the class generated is decorated as follows:

public interface ICalculator
{

[System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Add", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/AddResponse")]
[System.ServiceModel.TransactionFlowAttribute(System.ServiceModel.TransactionFlowOption.Mandatory)]
double Add(double n1, double n2);

[System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Subtract", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/SubtractResponse")]
[System.ServiceModel.TransactionFlowAttribute(System.ServiceModel.TransactionFlowOption.Mandatory)]
double Subtract(double n1, double n2);

[System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Multiply", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/MultiplyResponse")]
[System.ServiceModel.TransactionFlowAttribute(System.ServiceModel.TransactionFlowOption.Mandatory)]
double Multiply(double n1, double n2);

[System.ServiceModel.OperationContractAttribute(Action="http://Microsoft.ServiceModel.Samples/ICalculator/Divide", ReplyAction="http://Microsoft.ServiceModel.Samples/ICalculator/DivideResponse")]
[System.ServiceModel.TransactionFlowAttribute(System.ServiceModel.TransactionFlowOption.Mandatory)]

double Divide(double n1, double n2);
}

However I can see no equivalent in BTS using the WCF import wizard, how is this happening under the covers and in BTS, how can I specify which sends are to be part of the same transaction... my assumption is that they have to be in the same atomic scope?

Many thanks

Andy

AndyNorrris at 2007-10-2 >

I had earlier reported that I was able to flow the transactions using WCF Adapter using WS-AT. But I realized that the TransactionFlowOption was Allowed on the WCF service and when I made the TransactionFlowOption as Mandatory, I got the same exception as Andy. I get the error 'The service operation requires a transaction to be flowed'. I am able to use the WCF service from .Net client by creating a TransactionScope and invoking the WCF service. But when I try to initiate the WCF service from BizTalk, it always gives this error 'The service operation requires a transaction to be flowed'. Has anybody succeeded in flowing the transactions from BizTalk to WCF services using WCF adapter? Please let us know. Thank you.

ramesh_g_rajan at 2007-10-2 >

The problem for 'The service operation requires a transaction to be flowed' gets fixed by using the RC1 version of BizTalk 2006 R2 and the patch for KB939745(MicrosoftBiztalkServer2006R2RCESB-KB939745-ENU.exe). Only the patch solves this issue. Thank you Sarathy for your immense help.

RameshGRajan at 2007-10-2 >