Hướng dẫn cài đặt ssl let's encrypt trên Node JS

Hướng dẫn cài đặt ssl let's encrypt trên Node JS




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HTTPS is the basic security setting for all websites. To enable HTTPS and avoid the annoying “certificate not trusted error” on browsers, you need to get a certificate from a trusted issuer and install it on your server.
Let’s Encrypt is a free, automated, and open Certificate Authority. With letsencrypt, you can secure your server with HTTPS for free.
In this post, I will introduce how to secure your nodejs server with letsencrypt-express (now renamed to greenlock-express). Although there is an express in the name, you can still use it in your non-express nodejs server.
First, let’s create a test server:

const http = require('http');function handler(req, res) {
res.end('Hello World!');
}http.createServer(handler).listen(80);

It listens on port 80 and response ‘Hello World!’ to any request.
Next, you need to enable HTTPS by starting an https server:

const http = require('http');
const https = require('https');function handler(req, res) {
res.end('Hello World!');
}http.createServer(handler).listen(80);
https.createServer(handler).listen(443)

The https server does not work now, as you haven’t specify any certificate for it yet.
Now use letsencrypt-express (greenlock-express) to create a handler wrapper: (2018–05–20: the following code has been updated to support Let’s Encrypt v2)

const PROD = false;const lex = require('greenlock-express').create({
version: 'draft-11', server: PROD ? 'https://acme-v02.api.letsencrypt.org/directory' : 'https://acme-staging-v02.api.letsencrypt.org/directory', approveDomains: (opts, certs, cb) => {
if (certs) {
// change domain list here
opts.domains = ['example.com', 'yourdomain.com']
} else {
// change default email to accept agreement
opts.email = 'youremail@here.com';
opts.agreeTos = true;
}
cb(null, { options: opts, certs: certs });
} // optional: see "Note 3" at the end of the page
// communityMember: true});const middlewareWrapper = lex.middleware;

You need to change the domain list and default email in approveDomains function according to your own needs.
The returned object middlewareWrapper is a function, which takes any handler with the following form, and returns a middleware with the same form:

function(req, res, next)

This is good, because it can be used in different web frameworks. Now wrap your https request handler with it:

https.createServer(
lex.httpsOptions,
middlewareWrapper(handler)
).listen(433);

That’s it! Test your server with HTTPS, if every thing is ok, set PROD to true, restart, and your server is well protected by HTTPS.


Tham khảo: https://medium.com/@bohou/secure-you...e-f8925742faa9