AaltoTLS.SecureSession.BeginReceive C# (CSharp) Method

        public IAsyncResult BeginReceive(AsyncCallback asyncCallback, Object asyncState)
        {
            AsyncReceiveDataResult asyncReceiveResult = new AsyncReceiveDataResult(asyncCallback, asyncState);
            lock (_handshakeLock) {
                if (!_isAuthenticated) {
                    Exception e = new InvalidOperationException("Trying to receive on an unauthenticated session");
                    asyncReceiveResult.SetComplete(e);
                    return asyncReceiveResult;
                }
                if (_isHandshaking) {
                    // Queue requests to receive data during renegotiation
                    // TODO: implement this when renegotiation is implemented
                    Exception e = new InvalidOperationException("Receiving data during renegotiation not implemented");
                    asyncReceiveResult.SetComplete(e);
                    return asyncReceiveResult;
                }
            }

            _recordStream.BeginReceive(new AsyncCallback(ReceiveDataCallback), asyncReceiveResult);
            return asyncReceiveResult;
        }