WCF getting meaningful channel exceptions - wcf

Question

I have a simple WCF service with one method:
[ServiceContract]
public interface TestServiceContract
{
[OperationContract]
int[] Test();
}
public class TestService:TestServiceContract
{
public int[] Test()
{
return new int[1000000];
}
}
When on the client side I call
client.Test();
it fails, obviously because object I pass is too large.
BUT
instead of a meaningful description I get a totally useless
The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication
because it is in the Faulted state.
I tried enabling
<serviceDebug includeExceptionDetailInFaults="true" />
but it doesn't help.
Is it possible to get a meaningful error description?

Answer 1

Use "try catch" to catch exceptions when creating service endpoints.According to your description, I did a test and found that if the passed object is too large, there will be exceptions. Here is the exception I got:
Here is my demo:
namespace Test
{
[ServiceContract]
public interface TestServiceContract
{
[OperationContract]
int[] Test();
}
public class TestService : TestServiceContract
{
public int[] Test()
{
return new int[1000000];
}
}
class Program
{
static void Main(string[] args)
{
Uri baseAddress = new Uri("http://localhost:8000/GettingStarted/");
ServiceHost selfHost = new ServiceHost(typeof(TestService), baseAddress);
try
{
selfHost.AddServiceEndpoint(typeof(TestServiceContract), new WSHttpBinding(), "Test");
ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true;
selfHost.Description.Behaviors.Add(smb);
selfHost.Open();
Console.WriteLine("The service is ready.");
Console.WriteLine("Press <Enter> to terminate the service.");
Console.WriteLine();
Console.ReadLine();
}
catch (CommunicationException ce)
{
Console.WriteLine("An exception occurred: {0}", ce.Message);
selfHost.Abort();
}
}
}
}
This is the server-side code.
static void Main(string[] args)
{
WSHttpBinding myBinding = new WSHttpBinding();
EndpointAddress myEndpoint = new EndpointAddress("http://localhost:8000/GettingStarted/Test");
ChannelFactory<TestServiceContract> myChannelFactory = new ChannelFactory<TestServiceContract>(myBinding, myEndpoint);
TestServiceContract wcfClient1 = myChannelFactory.CreateChannel();
wcfClient1.Test();
}
This is the client-side code.I create a channel factory to call the service. You can also use Svcutil to generate proxy classes to call services.