simplify
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AJ ONeal
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README.md
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README.md
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# LetsEncrypt Express
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Free SSL and managed or automatic HTTPS for node.js with Express, Koa, Connect, and other middleware systems.
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Free SSL and managed or automatic HTTPS for node.js with Express, Koa, Connect, Hapi, and all other middleware systems.
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* Automatic Registration via SNI (`httpsOptions.SNICallback`)
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* **registrations** require an **approval callback** in *production*
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* Automatic Renewal (around 80 days)
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* **renewals** are *fully automatic* and happen in the *background*, with **no downtime**
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All you have to do is start the webserver and then visit it at it's domain name.
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## Install
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@ -10,43 +17,43 @@ npm install --save letsencrypt-express
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## Usage
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**Minimal**
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```javascript
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'use strict';
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// Note: using staging server url, remove .testing() for production
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var lex = require('letsencrypt-express').testing();
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var express = require('express');
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var app = express();
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// A happy little express app
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var app = require('express')();
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app.use(function (req, res) {
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res.send({ success: true });
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});
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function approveRegistration(hostname, cb) {
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// Note: this is the place to check your database to get the user associated with this domain
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cb(null, {
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domains: [hostname]
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, email: 'CHANGE_ME' // user@example.com
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, agreeTos: true
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});
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}
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// assumes ~/letsencrypt/etc as the configDir and ports 80, 443, and 5001 by default
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lex.create(app).listen();
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lex.create({
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configDir: '/etc/letsencrypt'
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, onRequest: app
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, approveRegistration: approveRegistration // leave `null` to disable automatic registration
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}).listen([80], [443, 5001], function () {
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console.log("ENCRYPT __ALL__ THE DOMAINS!");
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});
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// NOTE:
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// `~/letsencrypt/etc` is the default `configDir`
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// ports 80, 443, and 5001 are the default ports to listen on.
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```
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## How Automatic?
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**WARNING**: If you don't do any checks and simply complete `approveRegistration` callback, an attacker will spoof SNI packets with bad hostnames and that will cause you to be rate-limited and or blocked from the ACME server.
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**Extremely**.
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* **renewals** are *fully automatic* and happen in the *background*, with **no downtime**
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* **registrations** are automatic in *testing*, but require a **approval callback** in *production*
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**testing mode**
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All you have to do is start the webserver and then visit it at it's domain name.
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The certificate will be retrieved automatically. Renewals and Registrations are automatic.
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**production mode**
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You can run **registration** manually:
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Alternatively, You can run **registration** manually:
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```bash
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npm install -g letsencrypt-cli
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@ -56,27 +63,7 @@ letsencrypt certonly --standalone \
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--agree-tos --domains example.com --email user@example.com
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```
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(note that the `--webrootPath` option is also available if you don't want to shut down your webserver to get the cert)
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Or you can approve registrations with the `opts.approveRegistration(domain, cb)`callback:
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```javascript
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{ configDir: '...'
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// ...
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, approveRegistration: function (hostname, cb) {
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// check a database or something, get the user
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// show them the agreement that you've already downloaded
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cb(null, {
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domains: [hostname]
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, email: 'user@example.com'
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, agreeTos: true
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});
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}
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}
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```
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(if you don't check and simply complete the callback, an attacker will spoof SNI packets with bad hostnames
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and that will cause you to be rate-limited and or blocked from the ACME server)
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Note: the `--webrootPath` option is also available if you don't want to shut down your webserver to get the cert.
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## Examples
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@ -172,89 +159,6 @@ lex.create({
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});
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```
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### < 140 Characters
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Let's Encrypt in 128 characters, with spaces!
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```
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node -e 'require("letsencrypt-express").testing().create( require("express")().use(function (_, r) { r.end("Hi!") }) ).listen()'
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```
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### More realistic
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```javascript
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'use strict';
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// Note: using staging server url, remove .testing() for production
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var LEX = require('letsencrypt-express').testing();
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var express = require('express');
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var app = express();
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app.use('/', function (req, res) {
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res.send({ success: true });
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});
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LEX.create({
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configDir: './letsencrypt.config' // ~/letsencrypt, /etc/letsencrypt, whatever you want
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, onRequest: app // your express app (or plain node http app)
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, letsencrypt: null // you can provide you own instance of letsencrypt
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// if you need to configure it (with an agreeToTerms
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// callback, for example)
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, approveRegistration: function (hostname, cb) { // PRODUCTION MODE needs this function, but only if you want
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// automatic registration (usually not necessary)
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// renewals for registered domains will still be automatic
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cb(null, {
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domains: [hostname]
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, email: 'user@example.com'
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, agreeTos: true // you
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});
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}
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}).listen([80], [443, 5001], function () {
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console.log("ENCRYPT __ALL__ THE DOMAINS!");
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});
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```
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### More Options Exposed
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```javascript
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'use strict';
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var lex = require('letsencrypt-express');
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var express = require('express');
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var app = express();
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app.use('/', function (req, res) {
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res.send({ success: true });
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});
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var results = lex.create({
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configDir: '/etc/letsencrypt'
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, onRequest: app
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, server: require('letsencrypt').productionServerUrl
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}).listen(
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// you can give just the port, or expand out to the full options
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[80, { port: 8080, address: 'localhost', onListening: function () { console.log('http://localhost'); } }]
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// you can give just the port, or expand out to the full options
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, [443, 5001, { port: 8443, address: 'localhost' }]
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// this is pretty much the default onListening handler
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, function onListening() {
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var server = this;
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var protocol = ('requestCert' in server) ? 'https': 'http';
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console.log("Listening at " + protocol + '://localhost:' + this.address().port);
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}
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);
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// In case you need access to the raw servers (i.e. using websockets)
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console.log(results.plainServers);
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console.log(results.tlsServers);
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```
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### WebSockets with Let's Encrypt
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Note: you don't need to create websockets for the plain ports.
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@ -390,6 +294,92 @@ server: url // url use letsencrypt.productionServerUr
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// default production
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```
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## More Examples
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### < 140 Characters
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Let's Encrypt in 128 characters, with spaces!
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```
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node -e 'require("letsencrypt-express").testing().create( require("express")().use(function (_, r) { r.end("Hi!") }) ).listen()'
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```
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### More realistic
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```javascript
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'use strict';
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// Note: using staging server url, remove .testing() for production
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var LEX = require('letsencrypt-express').testing();
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var express = require('express');
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var app = express();
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app.use('/', function (req, res) {
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res.send({ success: true });
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});
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LEX.create({
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configDir: './letsencrypt.config' // ~/letsencrypt, /etc/letsencrypt, whatever you want
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, onRequest: app // your express app (or plain node http app)
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, letsencrypt: null // you can provide you own instance of letsencrypt
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// if you need to configure it (with an agreeToTerms
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// callback, for example)
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, approveRegistration: function (hostname, cb) { // PRODUCTION MODE needs this function, but only if you want
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// automatic registration (usually not necessary)
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// renewals for registered domains will still be automatic
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cb(null, {
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domains: [hostname]
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, email: 'user@example.com'
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, agreeTos: true // you
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});
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}
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}).listen([80], [443, 5001], function () {
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console.log("ENCRYPT __ALL__ THE DOMAINS!");
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});
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```
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### More Options Exposed
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```javascript
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'use strict';
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var lex = require('letsencrypt-express');
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var express = require('express');
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var app = express();
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app.use('/', function (req, res) {
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res.send({ success: true });
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});
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var results = lex.create({
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configDir: '/etc/letsencrypt'
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, onRequest: app
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, server: require('letsencrypt').productionServerUrl
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}).listen(
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// you can give just the port, or expand out to the full options
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[80, { port: 8080, address: 'localhost', onListening: function () { console.log('http://localhost'); } }]
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// you can give just the port, or expand out to the full options
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, [443, 5001, { port: 8443, address: 'localhost' }]
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// this is pretty much the default onListening handler
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, function onListening() {
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var server = this;
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var protocol = ('requestCert' in server) ? 'https': 'http';
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console.log("Listening at " + protocol + '://localhost:' + this.address().port);
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}
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);
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// In case you need access to the raw servers (i.e. using websockets)
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console.log(results.plainServers);
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console.log(results.tlsServers);
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```
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### Fullest Example Ever
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Here's absolutely every option and function exposed
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