Relevant Standards

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This page documents all the relevant standards that the + Apache HTTP Server follows, along with brief descriptions.

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In addition to the information listed below, the following resources + should be consulted:

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This document is not yet complete.

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HTTP Recommendations

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Regardless of what modules are compiled and used, Apache as a + basic web server complies with the following IETF recommendations:

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RFC 1945 + (Informational): The Hypertext Transfer Protocol (HTTP) is an application-level + protocol with the lightness and speed necessary for distributed, + collaborative, hypermedia information systems. This documents + HTTP/1.0.
RFC 2616 + (Standards Track): The Hypertext Transfer Protocol (HTTP) is an + application-level protocol for distributed, collaborative, + hypermedia information systems. This documents HTTP/1.1.
RFC 2396 + (Standards Track): A Uniform Resource Identifier (URI) is a compact string of + characters for identifying an abstract or physical resource.
RFC 4346 + (Standards Track): The TLS protocol provides communications security over the + Internet. It provides encryption, and is designed to prevent + eavesdropping, tampering, and message forgery.

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Regarding the Hypertext Markup Language, Apache complies with + the following IETF and W3C recommendations:

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RFC 2854 + (Informational): This document summarizes the history of HTML development, + and defines the "text/html" MIME type by pointing to the relevant + W3C recommendations.
HTML 4.01 Specification + (Errata) +: This specification defines the HyperText Markup Language (HTML), + the publishing language of the World Wide Web. This specification + defines HTML 4.01, which is a subversion of HTML 4.
HTML 3.2 Reference + Specification: The HyperText Markup Language (HTML) is a simple markup language + used to create hypertext documents that are portable from one + platform to another. HTML documents are SGML documents.
XHTML 1.1 - + Module-based XHTML + (Errata) +: This Recommendation defines a new XHTML document type + that is based upon the module framework and modules defined in + Modularization of XHTML.
XHTML 1.0 The + Extensible HyperText Markup Language (Second Edition) + (Errata) +: This specification defines the Second Edition of XHTML 1.0, + a reformulation of HTML 4 as an XML 1.0 application, and three + DTDs corresponding to the ones defined by HTML 4.

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Concerning the different methods of authentication, Apache + follows the following IETF recommendations:

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RFC 2617 + (Standards Track): "HTTP/1.0", includes the specification for a Basic + Access Authentication scheme.

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The following links document ISO and other language and country + code information:

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ISO 639-2: ISO 639 provides two sets of language codes, one as a two-letter + code set (639-1) and another as a three-letter code set (this part + of ISO 639) for the representation of names of languages.
+ ISO 3166-1: These pages document the country names (official short names + in English) in alphabetical order as given in ISO 3166-1 and the + corresponding ISO 3166-1-alpha-2 code elements.
BCP 47 + (Best Current Practice), + RFC 3066: This document describes a language tag for use in cases where + it is desired to indicate the language used in an information + object, how to register values for use in this language tag, + and a construct for matching such language tags.
RFC 3282 + (Standards Track): This document defines a "Content-language:" header, for use in + cases where one desires to indicate the language of something that + has RFC 822-like headers, like MIME body parts or Web documents, + and an "Accept-Language:" header for use in cases where one wishes + to indicate one's preferences with regard to language.

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