Example of subscribing to Navetas Loop websockets, either in the browser console, or in a Node script. In the latter case should see output like this:

browser.js

// Serial and secret can be scraped from summary page
var server = 'https://www.your-loop.com';
$.getScript('https://www.your-loop.com/socket.io/socket.io.js').done(function() {
    socket = io.connect(server);
    console.log('Connected to socket');
    socket.on('connect', function() {
        socket.emit("subscribe_electric_realtime", {
            serial: '00000000xxxxx',
            clientIp: '127.0.0.1',
            secret: 'xxxxxxxxxx'
        });
    });
    socket.on('electric_realtime', function(data) { console.log(data);});

});

commandline.js

// Subscribe to electricity and gas streams on Navetas Loop websockets
// Secrets and serial numbers can be found by logging into your-loop.com
// and evaluating the 'Drupal.settings.navetas_realtime' variable in browser console.

console.log('Starting');

var elec_serial = 'xxxx';
var elec_secret = 'xxxx';

var gas_serial = 'xxxx';
var gas_secret = 'xxxx';

// Need version 0.9.16, newer versions incompatible
var io = require('socket.io-client');
var socket = io.connect('https://www.your-loop.com', {reconnect: true});

// Connect
socket.on('connect', function(){
  console.log('Connecting');

  // Subscribe to electricity readings in watts
  socket.emit("subscribe_electric_realtime", {
    serial: elec_serial,
    clientIp: '127.0.0.1',
    secret: elec_secret
  });

  // Subscribe to gas readings
  socket.emit("subscribe_gas_interval", {
    serial: gas_serial,
    clientIp: '127.0.0.1',
    secret: gas_secret
  });
});

// Output electricity readings (~1 per 10 seconds)
socket.on('electric_realtime', function(data) { console.log("Electricity:%j", data);});

// Output gas readings (much slower ~15 mins)
socket.on('gas_interval', function(data) { console.log("Gas:%j", data);});

// Disconnect
socket.on('disconnect', function(){ console.console.log("Disconnected.");});