#StackBounty: #python #node.js #networking #websocket #mqtt How to keep connectivity status between node.js and python?

Bounty: 50

I have web application based on Node.js and python based hardware. I want to keep status of connectivity between web server and hardware. If Hardware gets disconnected from web application then web application should get event or notification so based on that i can send notification to user. I have used mqtt for data communication, but to keep connection status I can’t use MQTT coz it is connected with broker. I don’t want to increase more load on server.

Which tools/technology/protocol/method should i use to keep connection status that device is offline or online?. That I also want use when user tries to send data to hardware using web application and if device is not connected with server then user should get notification that device is offline based on connection status.

Get this bounty!!!

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