A very simple express server to log id provided as parameter in a get request.

simple-echo-server.js

// make sure to add express to package.json
var express = require('express');
var app = express();; 
var PORT = 3000;
  
app.get('/:id', function (req, res) {
  console.log(req.params['id']);
  res.send();
});
  
app.listen(PORT, function(err){
    if (err) console.log(err);
    console.log("Server listening on PORT", PORT);
});

// node simple-echo-server.js 
// keep the server running while our app makes requests from the background.