node.js - Certbot - How to create SSL certs and keys for IP:3030? -

i have expressjs app running on ip address @ port 3030.

how can create ssl cert , key type of address?

i tried with:

$ certbot certonly --standalone --email test1@yahoo.co.uk -d 127.0.1.1:3030

i error:

requested domain 127.0.1.1:3030 not fqdn

any ideas?

this package use - certbot.

this www file in expressjs bin directory:

#!/usr/bin/env node  /**  * module dependencies.  */  var app = require('../app'); var debug = require('debug')('mongoose-iot:server'); var http = require('http');  // add https support. // https://www.hacksparrow.com/express-js-https.html // http://stackoverflow.com/questions/11744975/enabling-https-on-express-js // http://blog.mgechev.com/2014/02/19/create-https-tls-ssl-application-with-express-nodejs/ var https = require('https'); var fs = require('fs');  /**  * port environment , store in express.  */  var port = normalizeport(process.env.port || '3000'); app.set('port', port);  /**  * create http server.  */  var server = http.createserver(app);  /**  * listen on provided port, on network interfaces.  */  server.listen(port); server.on('error', onerror); server.on('listening', onlistening);  /**  * port environment , store in express.  */  var httpsport = normalizeport(process.env.port || '3030'); app.set('port', httpsport);  /**  * create https server.  */   var options = {   key: fs.readfilesync('ssl/key.pem'),   cert: fs.readfilesync('ssl/cert.pem') };  var httpsserver = https.createserver(options, app);  /**  * listen on provided port, on network interfaces.  */  httpsserver.listen(httpsport); httpsserver.on('error', onerror); httpsserver.on('listening', onlistening);  /**  * normalize port number, string, or false.  */  function normalizeport(val) {   var port = parseint(val, 10);    if (isnan(port)) {     // named pipe     return val;   }    if (port >= 0) {     // port number     return port;   }    return false; }  /**  * event listener http server "error" event.  */  function onerror(error) {   if (error.syscall !== 'listen') {     throw error;   }    var bind = typeof port === 'string'     ? 'pipe ' + port     : 'port ' + port;    // handle specific listen errors friendly messages   switch (error.code) {     case 'eacces':       console.error(bind + ' requires elevated privileges');       process.exit(1);       break;     case 'eaddrinuse':       console.error(bind + ' in use');       process.exit(1);       break;     default:       throw error;   } }  /**  * event listener http server "listening" event.  */  function onlistening() {   var addr = server.address();   var bind = typeof addr === 'string'     ? 'pipe ' + addr     : 'port ' + addr.port;   debug('listening on ' + bind); } 

the problem letsencrypt ssl certficates domain names, doesn't have ip address or port. must have valid , publicly accessible domain name letsencrypt authority server can verify it.

in case common practice use http (and not https) in development using simple check like:

if (process.env.node_env === "production") {    // httpsserver.listen(httpsport) } else {    // ... }