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

        private void ForceAuthentication(bool receiveFirst, byte[] buffer, AsyncProtocolRequest asyncRequest)
        {
            if (CheckEnqueueHandshake(buffer, asyncRequest))
            {
                // Async handshake is enqueued and will resume later.
                return;
            }
            // Either Sync handshake is ready to go or async handshake won the race over write.

            // This will tell that we don't know the framing yet (what SSL version is)
            _Framing = Framing.Unknown;

            try
            {
                if (receiveFirst)
                {
                    // Listen for a client blob.
                    StartReceiveBlob(buffer, asyncRequest);
                }
                else
                {
                    // We start with the first blob.
                    StartSendBlob(buffer, (buffer == null ? 0 : buffer.Length), asyncRequest);
                }
            }
            catch (Exception e)
            {
                // Failed auth, reset the framing if any.
                _Framing = Framing.Unknown;
                _handshakeCompleted = false;

                if (SetException(e).SourceException == e)
                {
                    throw;
                }
                else
                {
                    _exception.Throw();
                }
            }
            finally
            {
                if (_exception != null)
                {
                    // This a failed handshake. Release waiting IO if any.
                    FinishHandshake(null, null);
                }
            }
        }