Refresh data SNMP automatically in the browser with socket.io

Question

I am developing an application to monitor routers using SNMP and Node.js. How can I make the data obtained through SNMP automatically refresh in the browser?

Note: I want the data to be refreshed automatically, without having to update the browser with F5. I'm using Node.js, Express and Socket.io.

Can you please put some code in for us to look at. – ca1c Oct 31 '18 at 02:42 — ca1c, Oct 31 '18 at 02:42

score 0 · Accepted Answer · answered Oct 31 '18 at 02:57

So what you could do is update it based on an event that happens in the backend.

Front End

<div id="updating">sample text</div>
<script>
  var updatedDiv = document.getElementById("updating")
  document.addEventListener("DOMContentLoaded", function(event) { 
    var socket = io();
    socket.on(‘update event’, data => {
      updatedDiv.innerHTML = data;
    });
  });
</script>

Back End

var io = require('socket.io')(http); 

function runme() {   
  io.emit(‘update event’,’this is the changed text’);
}

When the function is running, and the update event is running, the data in the html element will change. I hope that this solves your problem!

Refresh data SNMP automatically in the browser with socket.io

1 Answers1