beremiz

MQTT: WIP, destroys paho client during failure handling at init and at cleanup. Use mutex to protect retrieve.
<?xml version='1.0' encoding='utf-8'?>
<ModbusServerNode xmlns:xsd="http://www.w3.org/2001/XMLSchema" Local_Port_Number="1502" Local_IP_Address="127.0.0.1" Configuration_Name="Modbus TCP Server 0.1"/>