advanced (use existing account)
Verify Domains & Sub-Domains:
Hostname File Location File Contents
example.com .well-known/acme-challenge/xxx sec.ret
Hostname TXT Host TXT Value
example.com _acme-challenge.example.com 4A54
Verify Wildcard Domains:
Hostname TXT Host TXT Value
example.com _acme-challenge.example.com 4A54
Verifying Domains...
Hostname Type Pass
example.com http-01 -
advanced (use existing keypair for domain)

node.js https server example

'use strict';

var https = require('https');
var server = https.createServer({
  key: require('fs').readFileSync('./privkey.pem')
, cert: require('fs').readFileSync('./fullchain.pem')
}, function (req, res) {
  res.end("Hello, World!");
}).listen(443, function () {
  console.log('Listening on', this.address());
})