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HTTP Protocol Tutorial

A clear tutorial on the HTTP protocol with theory and tasks for beginners.

Main

Introduction to the HTTP protocol

Requests and responses in the HTTP protocol

Statelessness in HTTP

HTTP Message Structure

HTTP Request Start Line

HTTP Request Methods

HTTP response start line

HTTP Response Status Code Groups

HTTP Headlines

HTTP Header Groups

Useful HTTP Headers

Custom HTTP Headers

HTTP message body

Automatic HTTP browser requests

HTTP Request Costs

HTTP messages in browser debugger

Advanced

HTTP redirects

Referer source in HTTP protocol

User Agent in HTTP protocol

HTTPS protocol

GET parameters in the HTTP protocol

Submitting forms using the GET method in the HTTP protocol

Submitting forms using the POST method in the HTTP protocol

MIME types in HTTP protocol

AJAX HTTP requests

Cookie in HTTP

Session in HTTP

API via HTTP

REST API in HTTP protocol