BaconographyWP8.PlatformServices.SimpleHttpService.GetRequestStreamAsync C# (CSharp) Метод

        public static Task<Stream> GetRequestStreamAsync(HttpWebRequest request)
        {
            var taskComplete = new TaskCompletionSource<Stream>();
            request.BeginGetRequestStream(asyncResponse =>
            {
                try
                {
                    HttpWebRequest responseRequest = (HttpWebRequest)asyncResponse.AsyncState;
                    Stream someResponse = (Stream)responseRequest.EndGetRequestStream(asyncResponse);
                    taskComplete.TrySetResult(someResponse);
                }
                catch (Exception ex)
                {
                    taskComplete.TrySetException(ex);
                }
            }, request);
            return taskComplete.Task;
        }