GNTP Notification Monitor

class NotificationMonitor:
    """
    A notification monitor that sends notifications and handles protocol errors.
    """

    def __init__(self, hostname='localhost', port=23053, password=None):
        """
        Initialize the notification monitor.

        Args:
            hostname: The Growl server hostname
            port: The Growl server port
            password: Optional password for authentication
        """
        pass

    def send_notification(self, title, description, app_name='Monitor', retry_on_auth_error=False, fallback_password=None):
        """
        Send a notification to the Growl server with error handling.

        Args:
            title: Notification title
            description: Notification description
            app_name: Application name for registration
            retry_on_auth_error: Whether to retry with fallback_password on auth error
            fallback_password: Password to use for retry on authentication failure

        Returns:
            dict with keys:
                - 'success': bool indicating if notification was sent successfully
                - 'error_code': int error code if a GNTPError occurred, None otherwise
                - 'error_description': str error description if a GNTPError occurred, None otherwise
                - 'retried': bool indicating if a retry was attempted
        """
        pass

    def is_authentication_error(self, error_code):
        """
        Check if an error code represents an authentication failure.

        Args:
            error_code: The GNTP error code

        Returns:
            bool: True if error code is 401 (authentication error)
        """
        pass

    def is_recoverable_error(self, error_code):
        """
        Check if an error is recoverable and should be retried.

        Args:
            error_code: The GNTP error code

        Returns:
            bool: True if the error is recoverable (not 400 or 500 range errors)
        """
        pass