files/en-us/web/http/reference/resources_and_specifications/index.md
HTTP was first specified in the early 1990s. Designed with extensibility in mind, it has seen numerous additions over the years; this lead to its specification being scattered through numerous specification documents (in the midst of experimental abandoned extensions). This page lists relevant resources about HTTP.
| Specification | Title | Status |
|---|---|---|
| {{rfc(9110)}} | HTTP Semantics | Internet Standard |
| {{rfc(9111)}} | HTTP Caching | Internet Standard |
| {{rfc(9112)}} | HTTP/1.1 | Internet Standard |
| {{rfc(9113)}} | HTTP/2 | Proposed Standard |
| {{rfc(9114)}} | HTTP/3 | Proposed Standard |
| {{rfc(5861)}} | HTTP Cache-Control Extensions for Stale Content | Informational |
| {{rfc(8246)}} | HTTP Immutable Responses | Proposed Standard |
| {{rfc(6265)}} | HTTP State Management Mechanism Defines Cookies | Proposed Standard |
| Draft spec | Cookie Prefixes | IETF Draft |
| Draft spec | Same-Site Cookies | IETF Draft |
| Draft spec | Deprecate modification of 'secure' cookies from non-secure origins | IETF Draft |
| {{rfc(2145)}} | Use and Interpretation of HTTP Version Numbers | Informational |
| {{rfc(6585)}} | Additional HTTP Status Codes | Proposed Standard |
| {{rfc(7725)}} | An HTTP Status Code to Report Legal Obstacles | On the standard track |
| {{rfc(2397)}} | The "data" URL scheme | Proposed Standard |
| {{rfc(3986)}} | Uniform Resource Identifier (URI): Generic Syntax | Internet Standard |
| {{rfc(5988)}} | Web Linking Defines the {{HTTPHeader("Link")}} header | Proposed Standard |
| Draft spec | HTTP Client Hints | IETF Draft |
| {{rfc(7578)}} | Returning Values from Forms: multipart/form-data | Proposed Standard |
| {{rfc(6266)}} | Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP) | Proposed Standard |
| {{rfc(2183)}} | Communicating Presentation Information in Internet Messages: The Content-Disposition Header Field Only a subset of syntax of the {{HTTPHeader("Content-Disposition")}} header can be used in the context of HTTP messages. | Proposed Standard |
| {{rfc(7239)}} | Forwarded HTTP Extension | Proposed Standard |
| {{rfc(6455)}} | The WebSocket Protocol | Proposed Standard |
| {{rfc(5246)}} | The Transport Layer Security (TLS) Protocol Version 1.2 This specification has been modified by subsequent RFCs, but these modifications have no effect on the HTTP protocol. | Proposed Standard |
| {{rfc(8446)}} | The Transport Layer Security (TLS) Protocol Version 1.3 Supersedes TLS 1.2. | Proposed Standard |
| {{rfc(2817)}} | Upgrading to TLS Within HTTP/1.1 | Proposed Standard |
| {{rfc(7541)}} | HPACK: Header Compression for HTTP/2 | On the standard track |
| {{rfc(7838)}} | HTTP Alternative Services | On the standard track |
| {{rfc(7301)}} | Transport Layer Security (TLS) Application-Layer Protocol Negotiation Extension Used to negotiate HTTP/2 at the transport to save an extra request/response round trip. | Proposed Standard |
| {{rfc(6454)}} | The Web Origin Concept | Proposed Standard |
| Fetch | Cross-Origin Resource Sharing | Living Standard |
| {{rfc(7034)}} | HTTP Header Field X-Frame-Options | Informational |
| {{rfc(6797)}} | HTTP Strict Transport Security (HSTS) | Proposed Standard |
| Upgrade Insecure Requests | Upgrade Insecure Requests | Candidate Recommendation |
| Content Security Policy specification | Content Security Policy Level 3 | Obsolete |
| Microsoft document | Specifying legacy document modes* Defines X-UA-Compatible | Note |
| {{rfc(5689)}} | HTTP Extensions for Web Distributed Authoring and Versioning (WebDAV) These extensions of the Web, as well as CardDAV and CalDAV, are out-of-scope for HTTP on the Web. Modern APIs for application are defines using the RESTful pattern nowadays. | Proposed Standard |
| {{rfc(2324)}} | Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0) | April 1st joke spec |
| {{rfc(7168)}} | The Hyper Text Coffee Pot Control Protocol for Tea Efflux Appliances (HTCPCP-TEA) | April 1st joke spec |
| HTML Living Standard | HTML Defines extensions of HTTP for Server-Sent Events | Living Standard |
| Reporting API | Report-To header | Draft |
| Draft spec | Expect-CT Extension for HTTP | IETF Draft |
| {{rfc(7486)}} | HTTP Origin-Bound Auth (HOBA) | Experimental |
| {{rfc(7240)}} | Prefer Header for HTTP | Proposed Standard |