AaltoTLS.SecureSession.ProcessChangeCipherSpecRecord C# (CSharp) Method

        private void ProcessChangeCipherSpecRecord(Record record, AsyncHandshakeResult asyncHandshakeResult)
        {
            if (record.Fragment.Length != 1 || record.Fragment[0] != 0x01) {
                throw new AlertException(AlertDescription.IllegalParameter,
                                         "Received an invalid ChangeCipherSpec record");
            }

            // NOTE: keep this before recordHandler.ChangeLocalState since it may generate masterSecret
            _handshakeSession.RemoteChangeCipherSpec();

            // Change cipher suite in record handler and handle it in handshake session
            _recordHandler.SetCipherSuite(_handshakeSession.CipherSuite, _handshakeSession.ConnectionState);
            _recordHandler.ChangeRemoteState();

            // Read the finished message after changing cipher spec
            _recordStream.BeginReceive(new AsyncCallback(ReceiveHandshakeCallback), asyncHandshakeResult);
        }