2.1. HTTP Protocol

• Stateless

• Text protocol

• HTTP and HTTPS

• HTTP/1.1 vs. HTTP/2.0

• URI vs URL

2.1.1. Recap

• DNS

• /etc/hosts

2.1.2. Tooling

• Web Inspector

• curl

• wget

2.1.3. Sessions

• Database

• Cache

• Files

• Memory

2.1.4. Cookies

• EU cookies regulation from 2009

• String

2.1.5. HTML + JS + CSS