Slide 7 - HTTP Overview § Session 11 - Server-Side: HTTP and Apache Web Server Configuration

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HTTP Overview

HTTP is Stateless

Each requested resource is a separate, independent, request to the server -- it is a stateless protocol.

HTTP Versions

W3C and Internet Engineering Task Force (IETF) oversees the Hypertext Transfer Protocol.

HTTP 1.0 (1996)
HTTP 1.1 (1999)
Extensions to HTTP
- WebDAV
- Web Sockets
HTTP 2 and HPACK (2015)

An HTTP Conversation

Client Request
- METHOD Resource HTTP Version
- Client Generated Headers
- Request Body
Server Response
- Status Line
- Server Generated Headers
- Data

HTTP 1.1 Methods

GET
POST
HEAD
PUT
DELETE
TRACE
OPTIONS

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Copyright © David Heitmeyer