2.1. HTTP AboutΒΆ
Request vs Response
URI vs URL vs URN
HTTP vs HTTPS
HTTP/1.1 vs HTTP/2.0 vs HTTP/3
Methods
Statuses
Headers
Let's Encrypt - Free SSL/TLS certificates
https://certbot.eff.org/instructions?ws=nginx&os=ubuntufocal
HTTPbin.org https://httpbin.org/
Petstore OpenAPI https://petstore3.swagger.io/