connect method
Performs a connect to the message broker with an optional username and password for the purposes of authentication. If a username and password are supplied these will override any previously set in a supplied connection message so if you supply your own connection message and use the authenticateAs method to set these parameters do not set them again here.
Implementation
@override
Future<MqttConnectionStatus?> connect(
[String? username, String? password]) async {
instantiationCorrect = true;
clientEventBus = events.EventBus();
clientEventBus
?.on<DisconnectOnNoPingResponse>()
.listen(disconnectOnNoPingResponse);
connectionHandler = MqttSynchronousBrowserConnectionHandler(
clientEventBus,
maxConnectionAttempts: maxConnectionAttempts,
);
return await super.connect(username, password);
}