Users can define a Workspace loop body that subscribes to (and processes) messages received over a MQTT broker.

Inputs:
Enable loop	bool	If true, the loop will execute multiple iterations, based on its control inputs. If false, the loop will execute a single iteration only.
Wrap	bool	If true, once the loop has completed its final iteration and satisfies its termination condition, it will restart executing from the first iteration again. This can be useful for UI-driven applications where continuous (but repeating) feedback loops are required.
First iteration?	CSIRO::DataExecution::Dependency
Data	QByteArray
Topic	QString
Client ID	QString
Username	QString
Host	QString	The hostname or ip address of the broker to connect to
Port	int	The network port to connect to. Usually 1883
Keep alive	int	The number of seconds after which the broker should send a PING message to the client if no other messages have been exchanged in that time
Reconnect	bool	Enable 'Reconnect' per execution. When unticked, the previous execution of the operation may retain the connection and cache a queue of received messages. When enabled, the operation will force a reconnection, even if the broker address remains the same.
User name	QString	When a username is provided, only the matching credential will be used. When '*' is used or left empty, the system will attempt all available credentials until it finds one that can connect to the broker. In both cases, an attempt to connect anonymously would be a last resort if no other credentials are accepted.
Topics	QStringList	Topics to subscribe
Outputs:
Keep looping?	bool