DvachBrowser.Assets.HttpTasks.HttpPostTask.GetResponseCallback C# (CSharp) Method

        private async Task GetResponseCallback(Task<WebResponse> task)
        {
            // get the response
            HttpWebResponse response;
            try
            {
                response = (HttpWebResponse)await task.ConfigureAwait(false);
            }
            catch (Exception e)
            {
                if (e.InnerException != null && e.InnerException.Message.StartsWith("[net_WebHeaderInvalidControlChars]"))
                {
                    // not an exception, everything is ok
                    this.InvokeInUiThread(() => this.OnCompleted(null));
                }
                else
                {
                    this.InvokeOnErrorHandler(ErrorMessages.HttpPostError);
                }

                return;
            }

            if (response.StatusCode != HttpStatusCode.OK)
            {
                this.InvokeOnErrorHandler((int)response.StatusCode + " " + response.StatusDescription);
                return;
            }

            // response stream
            using (Stream stream = response.GetResponseStream())
            {
                using (StreamReader reader = new StreamReader(stream))
                {
                    string str = reader.ReadToEnd();
                    this.InvokeInUiThread(() => this.OnCompleted(str));
                }
            }
        }