SmtpServer.Protocol.SmtpCommandFactory.TryMakeRcpt C# (CSharp) Method

        public bool TryMakeRcpt(TokenEnumerator enumerator, out SmtpCommand command, out SmtpResponse errorResponse)
        {
            Debug.Assert(enumerator.Peek() == new Token(TokenKind.Text, "RCPT"));

            command = null;
            errorResponse = null;

            enumerator.Take();
            enumerator.TakeWhile(TokenKind.Space);

            if (enumerator.Take() != new Token(TokenKind.Text, "TO") || enumerator.Take() != new Token(TokenKind.Punctuation, ":"))
            {
                errorResponse = new SmtpResponse(SmtpReplyCode.SyntaxError, "missing the TO:");
                return false;
            }

            // according to the spec, whitespace isnt allowed here anyway
            enumerator.TakeWhile(TokenKind.Space);

            IMailbox mailbox;
            if (_parser.TryMakePath(enumerator, out mailbox) == false)
            {
                _logger.LogVerbose("Syntax Error (Text={0})", enumerator.AsText());

                errorResponse = SmtpResponse.SyntaxError;
                return false;
            }

            // TODO: support optional service extension parameters here

            command = new RcptCommand(mailbox, _options.MailboxFilterFactory);
            return true;
        }