Information about errors during data delivery.
class MQTTErrorEventParams(object): @property def error_code() -> int: ... @property def description() -> str: ... # In class MQTT: @property def on_error() -> Callable[[MQTTErrorEventParams], None]: ... @on_error.setter def on_error(event_hook: Callable[[MQTTErrorEventParams], None]) -> None: ...
The on_error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.
ErrorCode contains an error code and Description contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.