connect abstract method
@brief Method is used to connect to MQTT broker and start publishing position data. @param server MQTT broker server hostname or IP address. @param port MQTT broker server port. @param username MQTT broker username for authentication. @param password MQTT broker password for authentication.
Dart code snippet: @snippet mqtt_session_example.dart dart_MqttSession_connect
Implementation
void connect(String server, int port, String username, String password);