How do I prevent a WCF service from enter a faulted state?

Question

I have a WCF Service that should not enter the faulted state. If there\'s an exception, it should be logged and the service should continue uninterrupted. The service has a

Answer 1

Usually the WCF service is hosted in a ServiceHost, if the WCF-Service fails then the only option is to kill the WCF service and start a new one.

The ServiceHost has an event trigger "Faulted" that is activated when the WCF Service fails:

ServiceHost host = new ServiceHost(new Service.MyService());
host.Faulted += new EventHandler(host_faulted);
host.Open();

It is possible to get the exception causing the fault, but it requires a bit more work:

public class ErrorHandler : IErrorHandler
{
    public void ProvideFault(Exception error, MessageVersion version, ref Message fault)
    {

    }

    public bool HandleError(Exception error)
    {
        Console.WriteLine("exception");
        return false;
    }
}

public class ErrorServiceBehavior : IServiceBehavior
{
    public void Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {

    }

    public void AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase, Collection endpoints, BindingParameterCollection bindingParameters)
    {

    }

    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {
        ErrorHandler handler = new ErrorHandler();
        foreach (ChannelDispatcher dispatcher in serviceHostBase.ChannelDispatchers)
        {
            dispatcher.ErrorHandlers.Add(handler);
        }
    }
}

ServiceHost host = new ServiceHost(new Service.MyService());
host.Faulted += new EventHandler(host_faulted);
host.Description.Behaviors.Add(new ErrorServiceBehavior());
host.Open();

Credits http://www.haveyougotwoods.ca/2009/06/24/creating-a-global-error-handler-in-wcf