HTTP

Also known as Hypertext Transfer Protocol, http:, http://

HTTP (Hypertext Transfer Protocol) is an application layer protocol in the Internet protocol suite for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide Web, where hypertext documents include hyperlinks to other resources that the user can easily access, for example by a mouse click or by tapping the screen in a web browser.

AI overview

HTTP is the set of rules that computers use to send and receive web pages and other information over the internet. It matters because it's the foundation that makes the World Wide Web work, allowing you to click links and view documents in your web browser.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Protocol.image: HTTP logo.svg180px
Protocol.developer: Initially CERN; IETF, W3C

via Wikipedia infobox

Described at

What is HTTP

w3schools.com →

HTML CSS JAVASCRIPT SQL PYTHON JAVA PHP W3.CSS C C++ C HOW TO BOOTSTRAP REACT MYSQL JQUERY EXCEL XML DJANGO NUMPY PANDAS NODEJS DSA TYPESCRIPT ANGULAR ANGULARJS GIT POSTGRESQL MONGODB ASP AI R GO KOTLIN SWIFT SASS VUE GEN AI SCIPY AWS CYBERSECURITY DATA SCIENCE INTRO TO PROGRAMMING INTRO TO HTML & CSS BASH RUST TOOLS ) The World Wide Web is about communication between web clients and web servers . Clients are often browsers (Chrome, Edge, Safari), but they can be any type of program or device. 1. The browser requests an HTML page. The server returns an HTML file. 2. The browser requests a style sheet. The server returns a CSS file. 3. The browser requests an JPG image. The server returns a JPG file. 4. The browser requests JavaScript code. The server returns a JS file 5. The browser requests data. The server returns data (in XML or JSON). XHR is often used to request and receive data for the purpose of modifying a web page. Despite the XML and Http in the name, XHR is used with other protocols than HTTP, and the data can be of many different types like HTML , CSS , XML , JSON , and plain text.

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Wikidata facts

Official website: httpwg.org/specs

Show 8 more facts

port: 80
Commons category: Hypertext Transfer Protocol
Stack Exchange tag: webmasters.stackexchange.com/tags/http
inception: 1989-00-00
media type: message/http
publication date: 1990-00-00
software version identifier: 2
described at URL: www.w3schools.com/whatis/whatis_http.asp

Sources (7)

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~38 min read

Article

45 sections

Contents

Versions
Use
Technology
Transport layer
Data exchange
Request and response messages through connections
Persistent connections
Content retrieval optimizations
Application session {{anchor |HTTP session}}
Authentication
Encrypted connection
Message format{{anchor |message-format}}
Header{{anchor |message-header}}
Body{{anchor |message-body}}
Entity{{anchor |message-entity}}
Header field{{anchor |message-header-field}}
Request{{anchor |Request_message}}
Resource{{anchor |request-resource}}
Method{{anchor|request-method|Request_methods}}
Safe method
Idempotent method
Cacheable method
Response <span class="anchor" id="Response_message"></span>
Status code{{anchor |response-status-code}}
Reason phrase{{anchor |response-reason-phrase}}
Example
Similar protocols
History
HTTP/0.9
HTTP/1.0-draft
W3C HTTP Working Group
HTTP/1.0
HTTP/1.1
W3C HTTP-NG Working Group
IETF HTTP Working Group restarted
SPDY
HTTP/2
2014 updates to HTTP/1.1
HTTP/0.9 Deprecation
HTTP/3
Updates and refactoring in 2022
See also
Notes
References
External links

HTTP is a request–response protocol in the client–server model. A transaction starts with a client submitting a request to the server, the server attempts to satisfy the request and returns a response to the client that describes the disposition of the request and optionally contains a requested resource such as an HTML document or other content.