Check for internet connectivity in NodeJs

Question

Installed NodeJS on Raspberry Pi, is there a way to check if the rPi is connected to the internet via NodeJs ?

Answer 1

It's not as foolproof as possible but get the job done:

var dns = require('dns');
dns.lookupService('8.8.8.8', 53, function(err, hostname, service){
  console.log(hostname, service);
    // google-public-dns-a.google.com domain
});

just use a simple if(err) and treat the response adequately. :)

ps.: Please don't bother telling me 8.8.8.8 is not a name to be resolved, it's just a lookup for a highly available dns server from google. The intention is to check connectivity, not name resolution.