Lecture Topic: Advanced HTTP

# HTTP2
Goal is to reduce latency, but keep the same methods, status codes, and header fields. Changes how data is formatted and transmitted between clients
- Prioritises transmission of requested objects, and give a request a weight to each request to indicate priority
- Server pushes additional objects to client, by sending multiple responses to a single client request, before receiving explicit 
- Head of line blocking
	- Before in HTTP 1.1 the request are blocked by large requests, as objects are delivered in sequence, and a workaround is to setup multiple TCP connections to request many objects at once
	- In version 2, objects are divided into *frames* and frame transmission is interleaved in a round robin fashion

# HTTP3
Improved performance even further by using streaming, by using the "QUIC" protocol over a bare UDP connection

# HTML Versions
- HTML 1.0 Is written by Tim Berners-Lee
- HTML 1,2,3,4, 4.01 published in in 1999
- XHTML is an extensible version of HTML, based on XML
- HTML5
	- New elements, section for documents, figure for content flow, video, audio, canvas for multimedia
	- New APIs to prompt users, like alert(), confirm(), prompt(), and printing with print()
HTML is a markup language that uses tags

(list and explanation of common html tags)

# CSS
CSS defines the visual style of a document