public async Task<Guid> FaultPing(Guid guid)
{
Guid retval;
IWcfDuplexTaskReturnCallback callback = OperationContext.Current.GetCallbackChannel<IWcfDuplexTaskReturnCallback>();
try
{
// If we just return the result of the Callback we won't catch the FaultException here.
retval = await callback.ServicePingFaultCallback(guid);
}
catch (FaultException<FaultDetail> ex)
{
// Need to throw a new instance of FaultException so that certain fields such as the Action match what the client expects
// Otherwise the client will just get a plain FaultException instead of the expected FaultException<FaultDetail>
throw new FaultException<FaultDetail>(ex.Detail, ex.Message, ex.Code);
}
return retval;
}
public Task <Guid> Ping(Guid guid)
{
IWcfDuplexTaskReturnCallback callback = OperationContext.Current.GetCallbackChannel <IWcfDuplexTaskReturnCallback>();
return(callback.ServicePingCallback(guid));
}
