Secure MQTT conncetion

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    For a project I use MQTT to communicate with a PLC, but I would like to secure this communication line with TLS. For this connection I need to use port 8883. I looked at the code and found a variable called Secure in MqttConnection.cs, yet when i set this variable it is not possible to connect to the broker.

    The communicator log gives: “Error communicating with Device 61 “MQTT”: Cannot read data from the trasportline: External host has disconnected the connection.”
    The broker log gives: “OpenSSL Error: error:1408F10B: SSL routines:ssl3_get_record:wrong version number”.

    It looks like it is possible, but i cannot figure out how.
    Is this possible?
    With kind regards.


    Hello pyrotoef,
    Your question is very interesting. The MQTT driver has been developed by our community, the author is
    We can recommend the following ways for solution to your issue:
    1) You can contact the developer of this diver, perhaps he was facing with this issue.
    2) Developers of Rapid SCADA on a paid basis can solve this problem.
    Thank you for your question.
    Rapid SCADA team

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