System.Net.Security.SslState.WriteCallback C# (CSharp) Method

        private static void WriteCallback(IAsyncResult transportResult)
        {
            if (transportResult.CompletedSynchronously)
            {
                return;
            }

            AsyncProtocolRequest asyncRequest;
            SslState sslState;

#if DEBUG
            try
            {
#endif
                asyncRequest = (AsyncProtocolRequest)transportResult.AsyncState;
                sslState = (SslState)asyncRequest.AsyncObject;
#if DEBUG
            }
            catch (Exception exception) when (!ExceptionCheck.IsFatal(exception))
            {
                NetEventSource.Fail(null, $"Exception while decoding context: {exception}");
                throw;
            }
#endif

            // Async completion.
            try
            {
                sslState.InnerStream.EndWrite(transportResult);

                // Special case for an error notification.
                object asyncState = asyncRequest.AsyncState;
                ExceptionDispatchInfo exception = asyncState as ExceptionDispatchInfo;
                if (exception != null)
                {
                    exception.Throw();
                }

                sslState.CheckCompletionBeforeNextReceive((ProtocolToken)asyncState, asyncRequest);
            }
            catch (Exception e)
            {
                if (asyncRequest.IsUserCompleted)
                {
                    // This will throw on a worker thread.
                    throw;
                }

                sslState.FinishHandshake(e, asyncRequest);
            }
        }