Below is an example of making a HTTP request to Unical Healthchecks from Node.js.
var https = require('https');
https.get("https://healthchecks.unical.it/ping/your-uuid-here");
You can also send pings from a browser environment. Unical Healthchecks sets the
Access-Control-Allow-Origin:*
CORS header, so cross-domain AJAX requests work.
var xhr = new XMLHttpRequest();
xhr.open('GET', 'https://healthchecks.unical.it/ping/your-uuid-here', true);
xhr.send(null);