send MQTT message()
This function sends a message to MQTT server alias a, using topic b and payload c. Returns "true" on success.
Parameters
|
Parameter |
Description |
|
a |
The MQTT alias. |
|
b |
The topic to send to. |
|
c |
The data to be sent. |
|
d |
The encoding for the payload c. Note: You can use the three dots for selection. |
|
e |
The quality of service (1-3, where 1=At most once, 2=At least once, 3=Exactly once). |
System variables
In MQTT version 5, you can use system variables of the form MQTT_<keyname> to pass user properties (key, value). See also MQTT_SYS_CONTENTTYPE and MQTT_SYS_CORRELATIONDATA.