HTTP, a stateless protocol

1. The Protocol Every Web Developer Must Know - Part 1
2. HTTP Made Really Easy

These two links are what I read on. From requests, server make it responses.

It’s a stateless, application-layer protocol for communicating between distributed systems.

There are “verbs” such as

• GET
• POST
• PUT
• DELETE

and “status codes”

• 200 OK
• 301
• 404 Not Found
• 500 Internal Server Error

Have a Request, three things

• url (Link / Path / Route)
• a verb
• parameters

give a Response

• status code
• message body (payload)

check Request header. Response format. use “HTTP client” tool.

and use Chrome/webkit inspector.