HTTP Knowledge.txt

Overview
	- Communication between a host and a client occurs, via a request/response pair. 
	- The client initiates an HTTP request message, which is serviced through a HTTP response message in return.
	- Tt assumes very little about a particular system, and does not keep state between different message exchanges.
	- This makes HTTP a stateless protocol. 
	- The communication usually takes place over TCP/IP, but any reliable transport can be used. 
	- The default port for TCP/IP is 80, but other ports can also be used.
Structure
	HEADER
	Body

HTTP VERBS
	GET: fetch an existing resource. The URL contains all the necessary information the server needs to locate and return the resource.
	POST: create a new resource. POST requests usually carry a payload that specifies the data for the new resource.
	PUT: update an existing resource. The payload may contain the updated data for the resource.
	DELETE: delete an existing resource.

BKV
	Sensitive info was sent in a GET request.
	It should have been a POST request, encrypting the data in the body

Versions
	HTTP/1.0
	HTTP/1.1
		- Each request sent to a server resource corresponds to only one response. 
		- If the server resources generated a longer processing time, then all other incoming requests are blocked.
	HTTP/2
		- Superb performance when it comes to web browsing experience, notwithstanding the security it provides to the simple web applications and complex portals using SSL certificates. 
		- Backward compatible with HTTP/1.1

Tools
	Chrome Inspector
		- Network tab (to see Headers, timing, cookies, etc)


Sources
	https://code.tutsplus.com/tutorials/http-the-protocol-every-web-developer-must-know-part-1--net-31177
	https://learn.onemonth.com/understanding-http-basics/