View a website's SSL certificate

see-cert.js

/*
 *  Usage:
 * 
 *      node see-cert https://www.ft.com
 *
 */

const url = require('url');
const https = require('https');

const u = url.parse(process.argv[2]);

const req = https.request({ port: u.port, method: 'GET', host: u.host, path: u.path }, function(res){
	var cert = res.connection.getPeerCertificate();
	console.log(JSON.stringify(cert));
});

req.end();

req.on('error', function(e) {
  console.error(e);
});