MQTTBROKER

This driver acts as an MQTT broker for Hsyco. It can connect with many clients but can only receive messages without forwarding them.

HSYCO Configuration

Add the MQTTBROKER I/O Server in the I/O Servers section of the Settings and set its parameters:

Authentication

• Username: optional default username for clients
• Password: optional default password for clients

Authentication file

Under the hsyco root directory must be present a file named "mqttbroker.ini" which can contain a series of line, each line represents the credentials of a client and must have the following format:

"clientid":username="username",password="password"

Options

ID	Default	Values	Description
startupevents	true	true	generate IO events also during the driver’s start-up phase
		false	start generating events only after HSYCO is aligned with the current status of the system
acceptunknown	false	true	accept connection from clients whose id isn't specified in mqttbrokerauth.ini
		false	doesn't accept connection from clients whose id isn't specified in mqttbrokerauth.ini
localport	1883	<portNumber>	local port for incoming client connection

Datapoints

ID	Value	R/W	Description
connection	online	R	the broker accepted a connection from a client
	offline	R	initialization of the driver failed or loop cycle failed
client.<clientId>.connected	1	R	clientId is connected to the broker
	0	R	clientId isn't connected to the broker
client.<clientId>.topic.<topicName>	<message>	R	clientId published a message on topicName

TYPES OF MESSAGE

Each message must be encoded as UTF-8 strings

Connection

On connection message you can specify:

• client identifier
• username
• password
• keep-alive interval

Other fields will be ignored

Publish

On publish messages you can specify:

• topic name
• message
• QoS required for the message

Other fields will be ignored