SVGHMI: added a watchdog. To ensure that the whole chain is checked, watchdog use a periodic echo of a hearteat variable. JS client code systematically register /HEARTBEAT at 1s update freq, and reacts on updates of /HEARTBEAT by systematically incrementing it. C code catch /HEARTBEAT update and feeds python-implemented watchdog. For now, watchdog does nothing when tiggered

     1

{

     2

    "ID": "wamptest", 

     3

    "active": true, 

     4

    "protocolOptions": {

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        "autoPingInterval": 60, 

     6

        "autoPingTimeout": 20

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    }, 

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    "realm": "Automation", 

     9

    "url": "ws://127.0.0.1:8888"

    10

}