How to get free SSL for apache or websocket

00:19 Let’s Encrypt
01:22 Install certbot
02:24 Get the SSL keys
03:13 Get A free domain
03:49 Set TXT _acme-challenge record
05:14 fullchain.pem & privkey.pem
06:24 Config Apache for SSL (https://)
08:28 Bind local ip to domain (hosts)
10:00 Create websocket with SSL (wss://)

https://gist.github.com/jermaloo
https://certbot.eff.org/
https://eff-certbot.readthedocs.io/en/stable/using.html#manual