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MQTTEvent

Updated

Description

With this Action we can add one or more event handlers that can be received by the MQTT connection. After this Action is executed, the MQTTConnect Action can be called.

Properties

Specific

Connection

EXPRESSION (object:MQTTConnection)

MQTT connection to the server whose events are to be handled.

Event handlers

Array

List of events to be handled. For each item in the list, it will be necessary to select Event, Handler type and optionally Action. Event is the type of event we want to handle and the possible values are:

  • Connect – It is sent in case of successful connection or reconnect.
  • Reconnect – Sent when attempting to reconnect after a connection has been terminated.
  • Close – It is sent after the connection is terminated.
  • Disconnect – Sent when a disconnect packet is received by the broker.
  • Offline – Sent when the client goes offline.
  • End – Sent when the MQTTDisconnect Action is performed.
  • Error – Sent when the client cannot connect or a parsing error has occurred.
  • Message – It is sent when the client receives a published packet from the server for the topic we previously subscribed to with the MQTTSubscribe Action. Data of the type struct:$MQTTMessage is sent through the output, it is a system structure that has these members:
    • topic – The name of the topic for which the packet was published.
    • payload – Content of the received message.

Handler type can be Flow or Action. If Flow is selected then an output will be added through which the Flow execution continues if the event is sent. If Action is selected, then Action must also be set, i.e. the name of the User action that is executed when the event is received.

Inputs

seqin

SEQ | OPTIONAL

A standard sequence input.

Outputs

seqout

SEQ | OPTIONAL

A standard sequence output.

Examples

  • MQTT
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