Send

This is the Task to connect to a MQTT broker, publishes a message to a given topic, then disconnects.

Task version: 1.0.0

Required Frends version: 5.7+

Required .NET version: 8.0

Compatible Agents: Crossplatform

Source code: https://github.com/FrendsPlatform/Frends.MQTT/tree/main/Frends.MQTT.Send

Task Parameters

Input

Name	Description
Host : String	The address of the MQTT broker. Default: - Example: broker_host
BrokerPort : Int32	The port of the MQTT broker. Default: - Example: 1883
Topic : String	The topic to publish the message to. Default: - Example: your_topic
Message : String	The message to be published. Default: - Example: your_message
UseTls12 : Boolean	Whether to use TLS authentication Default: - Example: false
QoS : QoS	The Quality of Service (QoS) level for the MQTT session. Possible values: AtMostOnce: The Quality of Service (QoS) level for the MQTT session. AtLeastOnce: The Quality of Service (QoS) level for the MQTT session. ExactlyOnce: The Quality of Service (QoS) level for the MQTT session. Default: - Example: QoS.AtMostOnce
Username : String	Username for authentication. Default: - Example: testuser
🗝Password : String	Password for authentication. Default: - Example: Password123
AllowInvalidCertificate : Boolean	When true, allows connections even if the server's TLS certificate is invalid (e.g., self-signed, expired, or hostname mismatch). WARNING: This reduces security and should only be used in development/testing environments or when connecting to internal servers with self-signed certificates. Default: False Example: true

Task Result

Name	Description
Success : Boolean	Whether connection to the MQTT broker was successful or not. Example: true
Data : String	Returns a confirmation message on success. Example: Message sent
Error : String	Error(s) if connecting to broker failed. Returns an empty string if no errors exist. Example: Connection refused

Task Changelog

Changelog for Task Frends.MQTT.Send.

[1.0.0] - 2025-04-07

Added

• Initial implementation