System.Net.LazyAsyncResult.Complete C# (CSharp) Method

        protected virtual void Complete(IntPtr userToken)
        {
            bool offloaded = false;
            ThreadContext threadContext = CurrentThreadContext;
            try
            {
                ++threadContext._nestedIOCount;
                if (_asyncCallback != null)
                {
                    if (NetEventSource.IsEnabled) NetEventSource.Info(this, "Invoking callback");

                    if (threadContext._nestedIOCount >= ForceAsyncCount)
                    {
                        if (NetEventSource.IsEnabled) NetEventSource.Info(this, "*** OFFLOADED the user callback ****");

                        Task.Factory.StartNew(
                            s => WorkerThreadComplete(s),
                            this,
                            CancellationToken.None,
                            TaskCreationOptions.DenyChildAttach,
                            TaskScheduler.Default);

                        offloaded = true;
                    }
                    else
                    {
                        _asyncCallback(this);
                    }
                }
                else
                {
                    if (NetEventSource.IsEnabled) NetEventSource.Info(this, "No callback to invoke");
                }
            }
            finally
            {
                --threadContext._nestedIOCount;

                // Never call this method unless interlocked _intCompleted check has succeeded (like in this case).
                if (!offloaded)
                {
                    Cleanup();
                }
            }
        }