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<title>Relevant Standards - Apache HTTP Server</title>
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<p class="apache">Apache HTTP Server Version 2.4</p>
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<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.4</a> &gt; <a href="./">Miscellaneous Documentation</a></div><div id="page-content"><div id="preamble"><h1>Relevant Standards</h1>
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<p><span>Available Languages: </span><a href="../en/misc/relevant_standards.html" title="English">&nbsp;en&nbsp;</a> |
<a href="../fr/misc/relevant_standards.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
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    <p>This page documents all the relevant standards that the
    Apache HTTP Server follows, along with brief descriptions.</p>

    <p>In addition to the information listed below, the following resources
    should be consulted:</p>

    <ul>
      <li>
        <a href="http://purl.org/NET/http-errata">
        http://purl.org/NET/http-errata</a> - HTTP/1.1 Specification Errata
      </li>
      <li>
        <a href="http://www.rfc-editor.org/errata.php">
        http://www.rfc-editor.org/errata.php</a> - RFC Errata
      </li>
      <li>
        <a href="http://ftp.ics.uci.edu/pub/ietf/http/#RFC">
        http://ftp.ics.uci.edu/pub/ietf/http/#RFC</a> - A pre-compiled list
        of HTTP related RFCs
      </li>
    </ul>

    <div class="warning"><h3>Notice</h3>
    <p>This document is not yet complete.</p>
    </div>

  </div>
<div id="quickview"><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#http_recommendations">HTTP Recommendations</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#html_recommendations">HTML Recommendations</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#authentication">Authentication</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#language_country_codes">Language/Country Codes</a></li>
</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="section">
<h2><a name="http_recommendations" id="http_recommendations">HTTP Recommendations</a></h2>

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

    <dl>
      <dt><a href="http://www.rfc-editor.org/rfc/rfc1945.txt">RFC 1945</a>
      (Informational)</dt>

      <dd>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.</dd>

      <dt><a href="http://www.rfc-editor.org/rfc/rfc2616.txt">RFC 2616</a>
      (Standards Track)</dt>

      <dd>The Hypertext Transfer Protocol (HTTP) is an
      application-level protocol for distributed, collaborative,
      hypermedia information systems.  This documents HTTP/1.1.</dd>

      <dt><a href="http://www.rfc-editor.org/rfc/rfc2396.txt">RFC 2396</a>
      (Standards Track)</dt>

      <dd>A Uniform Resource Identifier (URI) is a compact string of
      characters for identifying an abstract or physical resource.</dd>

      <dt><a href="http://www.rfc-editor.org/rfc/rfc4346.txt">RFC 4346</a>
      (Standards Track)</dt>

      <dd>The TLS protocol provides communications security over the
      Internet.  It provides encryption, and is designed to prevent
      eavesdropping, tampering, and message forgery.</dd>
    </dl>

  </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="html_recommendations" id="html_recommendations">HTML Recommendations</a></h2>

    <p>Regarding the Hypertext Markup Language, Apache complies with
    the following IETF and W3C recommendations:</p>

    <dl>
      <dt><a href="http://www.rfc-editor.org/rfc/rfc2854.txt">RFC 2854</a>
      (Informational)</dt>

      <dd>This document summarizes the history of HTML development,
      and defines the "text/html" MIME type by pointing to the relevant
      W3C recommendations.</dd>

      <dt><a href="http://www.w3.org/TR/html401">HTML 4.01 Specification</a>
      (<a href="http://www.w3.org/MarkUp/html4-updates/errata">Errata</a>)
      </dt>

      <dd>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.</dd>

      <dt><a href="http://www.w3.org/TR/REC-html32">HTML 3.2 Reference
      Specification</a></dt>

      <dd>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.</dd>

      <dt><a href="http://www.w3.org/TR/xhtml11/">XHTML 1.1 -
      Module-based XHTML</a>
      (<a href="http://www.w3.org/MarkUp/2009/xhtml11-2nd-edition-errata.html">Errata</a>)
      </dt>

      <dd>This Recommendation defines a new XHTML document type
      that is based upon the module framework and modules defined in
      Modularization of XHTML.</dd>

      <dt><a href="http://www.w3.org/TR/xhtml1">XHTML 1.0 The
      Extensible HyperText Markup Language (Second Edition)</a>
      (<a href="http://www.w3.org/2002/08/REC-xhtml1-20020801-errata/">Errata</a>)
      </dt>

      <dd>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.</dd>
    </dl>

  </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="authentication" id="authentication">Authentication</a></h2>

    <p>Concerning the different methods of authentication, Apache
    follows the following IETF recommendations:</p>

    <dl>
      <dt><a href="http://www.rfc-editor.org/rfc/rfc2617.txt">RFC 2617</a>
      (Standards Track)</dt>

      <dd>"HTTP/1.0", includes the specification for a Basic
      Access Authentication scheme.</dd>

    </dl>

  </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="language_country_codes" id="language_country_codes">Language/Country Codes</a></h2>

    <p>The following links document ISO and other language and country
    code information:</p>

    <dl>
      <dt><a href="http://www.loc.gov/standards/iso639-2/">ISO 639-2</a></dt>

      <dd>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.</dd>

      <dt><a href="http://www.iso.ch/iso/en/prods-services/iso3166ma/02iso-3166-code-lists/index.html">
      ISO 3166-1</a></dt>

      <dd>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.</dd>

      <dt><a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt">BCP 47</a>
      (Best Current Practice),
      <a href="http://www.rfc-editor.org/rfc/rfc3066.txt">RFC 3066</a></dt>

      <dd>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.</dd>

      <dt><a href="http://www.rfc-editor.org/rfc/rfc3282.txt">RFC 3282</a>
      (Standards Track)</dt>

      <dd>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.</dd>
    </dl>

  </div></div>
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<a href="../ko/misc/relevant_standards.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&amp;A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
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