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<h1><a id="title" name="title"><acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> Vocabulary in <acronym
title="Resource Description Framework">RDF</acronym> 1.0</a></h1>

<h2><a id="w3c-doctype" name="w3c-doctype">W3C Working Draft 10 May
2011</a></h2>
<dl>
  <dt>This version:</dt>
    <dd><a
      href="http://www.w3.org/TR/2011/WD-HTTP-in-RDF10-20110510/">http://www.w3.org/TR/2011/WD-HTTP-in-RDF10-20110510/</a></dd>
  <dt>Latest version:</dt>
    <dd><a
      href="http://www.w3.org/TR/HTTP-in-RDF10/">http://www.w3.org/TR/HTTP-in-RDF10/</a></dd>
  <dt>Previous version:</dt>
    <dd><a
      href="http://www.w3.org/TR/2009/WD-HTTP-in-RDF10-20091029/">http://www.w3.org/TR/2009/WD-HTTP-in-RDF10-20091029/</a></dd>
  <dt>Editors:</dt>
    <dd>Johannes Koch (until November 2010 while at Fraunhofer Institute for
      Applied Information Technology FIT)</dd>
    <dd>Carlos A Velasco, Fraunhofer Institute for Applied Information
      Technology FIT</dd>
    <dd>Philip Ackermann, Fraunhofer Institute for Applied Information
      Technology FIT</dd>
</dl>

<p>The terms defined by this document are also provided in <a
href="http://www.w3.org/2011/http">RDF Schema</a> format.</p>

<p class="copyright"><a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> ©
2011 <a href="http://www.w3.org/"><acronym
title="World Wide Web Consortium">W3C</acronym></a><sup>®</sup> (<a
href="http://www.csail.mit.edu/"><acronym
title="Massachusetts Institute of Technology">MIT</acronym></a>, <a
href="http://www.ercim.eu/"><acronym
title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>,
<a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
<a
href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document
use</a> rules apply.</p>
</div>
<hr />

<h2><a id="abstract" name="abstract">Abstract</a></h2>

<p>The identification of resources on the Web by a Uniform Resource Identifier
(<acronym>URI</acronym>) alone may not be sufficient, as other factors such as
<acronym title="Hyper Text Transfer Protocol">HTTP</acronym> content
negotiation might come into play. This issue is particularly significant for
quality assurance testing, conformance claims, and reporting languages like the
<a href="http://www.w3.org/WAI/intro/earl">W3C Evaluation And Report Language
(<acronym>EARL</acronym>)</a>. This document provides a representation of the
<acronym>HTTP</acronym> vocabulary in the Resource Description Framework
(<acronym>RDF</acronym>), to allow quality assurance tools to record the
<acronym>HTTP</acronym> headers that have been exchanged between a client and a
server. The <acronym>RDF</acronym> terms defined by this document represent the
core <acronym>HTTP</acronym> specification defined by <acronym
title="Request for Comments">RFC</acronym> 2616, as well as additional
<acronym>HTTP</acronym> headers registered by the Internet Assigned Numbers
Authority (<acronym>IANA</acronym>). These terms can also be used to record
<acronym title="Secure Hyper Text Transfer Protocol">HTTPS</acronym>
exchanges.</p>

<div id="sotd">
<h2><a id="status" name="status">Status of this document</a></h2>

<p><em>This section describes the status of this document at the time of its
publication. Other documents may supersede this document. A list of current W3C
publications and the latest revision of this technical report can be found in
the <a href="http://www.w3.org/TR/">W3C technical reports index</a> at
http://www.w3.org/TR/.</em></p>

<p>This 10 May 2011 Working Draft of <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> Vocabulary in <acronym
title="Resource Description Framework">RDF</acronym> 1.0 is an update of the
previous <a
href="http://www.w3.org/TR/2009/WD-Content-in-RDF10-20091029/"><acronym>HTTP</acronym>
Vocabulary in <acronym>RDF</acronym> Working Draft of 29 October 2009</a>, and
it incorporates all comments received since. This document is part of the <a
href="http://www.w3.org/WAI/intro/earl">W3C Evaluation And Report Language
(<acronym>EARL</acronym>)</a> but can be reused in other contexts too. This
document is intended to be published and maintained as a W3C Working Group Note
after review and refinement.</p>

<p>The Evaluation and Repair Tools Working Group (ERT WG) believes it has
addressed all issues brought forth through previous Working Draft iterations.
The Working Group encourages feedback about this document,
<acronym>HTTP</acronym> Vocabulary in <acronym>RDF</acronym> 1.0, by developers
and researchers who have interest in software-supported evaluation and
validation of websites, and by developers and researchers who have interest in
Semantic Web technologies for content description, annotation, and adaptation.
In particular, feedback from the groups involved in the W3C Semantic Web
Activity, especially the Semantic Web Coordination Group, the Semantic Web
Deployment Working Group, and the Semantic Web Interest Group would be greatly
appreciated.</p>

<p>Please send comments on this <acronym>HTTP</acronym> Vocabulary in
<acronym>RDF</acronym> 1.0 document by <strong>10 June 2011</strong> to <a
href="mailto:public-earl10-comments@w3.org">public-earl10-comments@w3.org</a>
(publicly visible <a
href="http://lists.w3.org/Archives/Public/public-earl10-comments/">mailing list
archive</a>).</p>

<p>Publication as a Working Draft does not imply endorsement by the W3C
Membership. This is a draft document and may be updated, replaced or obsoleted
by other documents at any time. It is inappropriate to cite this document as
other than work in progress.</p>

<p>This document has been produced by the <a
href="http://www.w3.org/WAI/ER/">Evaluation and Repair Tools Working Group (ERT
WG)</a> as part of the <a href="http://www.w3.org/WAI/Technical/Activity">Web
Accessibility Initiative (WAI) Technical Activity</a>.</p>

<p>This document was produced by a group operating under the <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February 2004 W3C
Patent Policy</a>. The group does not expect this document to become a W3C
Recommendation. W3C maintains a <a rel="disclosure"
href="http://www.w3.org/2004/01/pp-impl/32094/status">public list of any patent
disclosures</a> made in connection with the deliverables of the group; that
page also includes instructions for disclosing a patent. An individual who has
actual knowledge of a patent which the individual believes contains <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential
Claim(s)</a> must disclose the information in accordance with <a
href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
6 of the W3C Patent Policy</a>.</p>
</div>
<hr />

<div id="toc">
<h2><a accesskey="c" id="contents" name="contents">Table of Contents</a></h2>
<ol>
  <li><a href="#introduction">Introduction</a> 
    <ul>
      <li><a href="#namespaces">1.1 Namespaces</a></li>
      <li><a href="#use-cases">1.2 Use Cases</a></li>
      <li><a href="#limitations">1.3 Limitations</a></li>
    </ul>
  </li>
  <li><a href="#classes">Classes</a> 
    <ul>
      <li><a href="#ConnectionClass">2.1 Connection Class</a></li>
      <li><a href="#MessageClass">2.2 Message Class</a> 
        <ul>
          <li><a href="#RequestClass">2.2.1 Request Class</a></li>
          <li><a href="#ResponseClass">2.2.2 Response Class</a></li>
        </ul>
      </li>
      <li><a href="#MessageHeaderClass">2.3 MessageHeader Class</a> 
        <ul>
          <li><a href="#GeneralHeaderClass">2.3.1 GeneralHeader Class</a></li>
          <li><a href="#RequestHeaderClass">2.3.2 RequestHeader Class</a></li>
          <li><a href="#ResponseHeaderClass">2.3.3 ResponseHeader Class</a></li>
        </ul>
      </li>
      <li><a href="#EntityHeaderClass">2.4 EntityHeader Class</a></li>
      <li><a href="#HeaderElementClass">2.5 HeaderElement Class</a></li>
      <li><a href="#ParameterClass">2.6 Parameter Class</a></li>
      <li><a href="#MethodClass">2.7 Method Class</a></li>
      <li><a href="#StatusCodeClass">2.8 StatusCode Class</a></li>
      <li><a href="#HeaderNameClass">2.9 HeaderName Class</a></li>
    </ul>
  </li>
  <li><a href="#properties">Properties</a> 
    <ul>
      <li><a href="#bodyProperty">3.1 body Property</a></li>
      <li><a href="#connectionAuthorityProperty">3.2 connectionAuthority
        Property</a></li>
      <li><a href="#elementNameProperty">3.3 elementName Property</a></li>
      <li><a href="#elementValueProperty">3.4 elementValue Property</a></li>
      <li><a href="#fieldNameProperty">3.5 fieldName Property</a></li>
      <li><a href="#fieldValueProperty">3.6 fieldValue Property</a></li>
      <li><a href="#headersProperty">3.7 headers Property</a></li>
      <li><a href="#headerElementsProperty">3.8 headerElements Property</a></li>
      <li><a href="#hdrNameProperty">3.9 hdrName Property</a></li>
      <li><a href="#httpVersionProperty">3.10 httpVersion Property</a></li>
      <li><a href="#mthdProperty">3.11 mthd Property</a></li>
      <li><a href="#methodNameProperty">3.12 methodName Property</a></li>
      <li><a href="#paramsProperty">3.13 params Property</a></li>
      <li><a href="#paramNameProperty">3.14 paramName Property</a></li>
      <li><a href="#paramValueProperty">3.15 paramValue Property</a></li>
      <li><a href="#reasonPhraseProperty">3.16 reasonPhrase Property</a></li>
      <li><a href="#requestsProperty">3.17 requests Property</a></li>
      <li><a href="#requestURIProperty">3.18 requestURI Property</a> 
        <ul>
          <li><a href="#absoluteURIProperty">3.18.1 absoluteURI
          Property</a></li>
          <li><a href="#absolutePathProperty">3.18.2 absolutePath
          Property</a></li>
          <li><a href="#authorityProperty">3.18.3 authority Property</a></li>
        </ul>
      </li>
      <li><a href="#respProperty">3.19 resp Property</a></li>
      <li><a href="#scProperty">3.20 sc Property</a></li>
      <li><a href="#statusCodeNumberProperty">3.21 statusCodeNumber
      Property</a></li>
      <li><a href="#statusCodeValueProperty">3.22 statusCodeValue
      Property</a></li>
    </ul>
  </li>
</ol>

<h3><a id="appendices" name="appendices">Appendices</a></h3>
<ol type="A">
  <li><a href="#example">A practical Example</a></li>
  <li><a href="#terms">Terms</a></li>
  <li><a href="#references">References</a></li>
  <li><a href="#changes">Document Changes</a></li>
</ol>
</div>
<!-- end toc -->
<hr />

<h2><a id="introduction" name="introduction">1 Introduction</a></h2>

<p>This document defines a representation of the Hypertext Transfer Protocol
(<acronym>HTTP</acronym>) using the Resource Description Framework
(<acronym>RDF</acronym>). It defines a collection of <acronym>RDF</acronym>
classes and properties that represent the <acronym>HTTP</acronym> vocabulary as
defined by the <acronym>HTTP</acronym> specification [<a
href="#ref-rfc2616">RFC2616</a>]. These <acronym>RDF</acronym> terms can be
used to record <acronym>HTTP</acronym> or secure <acronym>HTTP</acronym>
request and response messages in <acronym>RDF</acronym> format, such as by
automated Web accessibility evaluation tools that want to describe Web
resources, including the various headers exchanged between the client and
server during content negotiation. More usage examples for these terms are
described in section <a href="#use-cases">1.2 Use Cases</a>.</p>

<p><strong>Note:</strong> The version 1.0 specifies the version of the
<acronym>HTTP</acronym> Vocabulary in <acronym>RDF</acronym> document and
<strong>not</strong> the version of <acronym>HTTP</acronym>. The vocabulary
defined in this specification is usable for <acronym>HTTP</acronym> versions up
to 1.1.</p>

<p>This document is not intended to be a clarification or extension of the
different concepts of the <acronym>HTTP</acronym> specification. The
<acronym>HTTP</acronym> specification is defined by a series of Request for
Comments (<acronym>RFC</acronym>) publications and other documentation,
including [<a href="#ref-rfc2616">RFC 2616</a>] and [<a href="#ref-rfc4229">RFC
4229</a>]. These are listed in <a href="#references">Appendix C:
References</a>.</p>

<p>Additionally this document assumes the following background knowledge:</p>
<ul>
  <li>Basic knowledge of the Extensible Markup Language
    (<acronym>XML</acronym>) [<a href="#ref-xml">XML</a>] and its associated
    technologies.</li>
  <li>Basic knowledge about the Semantic Web and <acronym>RDF</acronym>. For
    references, consult [<a href="#ref-rdf">RDF</a>], [<a
    href="#ref-rdfs">RDFS</a>], [<a href="#ref-rdf-primer">RDF-PRIMER</a>] and
    [<a href="#ref-owl">OWL</a>].</li>
</ul>

<p>The terms defined by this document can be used as part of the <a
href="http://www.w3.org/WAI/intro/earl">W3C Evaluation And Report Language
(<acronym>EARL</acronym>)</a> and in other contexts too. <a
href="http://www.w3.org/TR/EARL10-Guide/">Developer Guide for Evaluation and
Report Language (EARL) 1.0</a> explains how to implement and use EARL,
including conformance requirements for software tools.</p>

<p>By default, the vocabulary introduced by this document uses names starting
with upper-case letters for classes and names starting with lower-case letters
for properties. The keywords <strong>must</strong>, <strong>required</strong>,
<strong>recommended</strong>, <strong>should</strong>, <strong>may</strong>,
and <strong>optional</strong> are used in accordance with [<a
href="#ref-rfc2119">RFC2119</a>].</p>

<h3><a id="namespaces" name="namespaces">1.1 Namespaces</a></h3>

<p>The <acronym title="Resource Description Framework">RDF</acronym>
representation of the <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> vocabulary defined by this
document uses the namespace <code>http://www.w3.org/2011/http#</code>. The
prefix <code>http</code> is used throughout this document to denote this
namespace. <a href="#tab-ns1">Table 1</a> presents the namespaces used by this
document. The prefix notation presents the typical conventions used in the Web
and in this document to denote a given namespace, and can be freely modified.
<a href="#tab-externalResources">Table 2</a> presents additional
<acronym>RDF</acronym> data used by this document.</p>

<table id="tab-ns1">
  <caption>Table 1: namespaces used by this document.</caption>
  <tbody>
    <tr>
      <th>Namespace prefix</th>
      <th>Namespace <acronym
      title="Uniform Resource Identifier">URI</acronym></th>
      <th>Description</th>
    </tr>
    <tr>
      <td><code>http</code></td>
      <td><code>http://www.w3.org/2011/http#</code></td>
      <td>Namespace for the core terms of <acronym>HTTP</acronym> vocabulary in
        <acronym>RDF</acronym>.</td>
    </tr>
    <tr>
      <td scope="row"><code>cnt</code></td>
      <td><code>http://www.w3.org/2011/content#</code></td>
      <td>Namespace for Representing Content in <acronym>RDF</acronym> [<a
        href="#ref-content-in-rdf">Content-in-RDF</a>].</td>
    </tr>
    <tr>
      <td scope="row"><code>dct</code></td>
      <td><code>http://purl.org/dc/terms/</code></td>
      <td>Namespace for the Dublin Core Metadata Terms.</td>
    </tr>
    <tr>
      <td><code>owl</code></td>
      <td><code>http://www.w3.org/2002/07/owl#</code></td>
      <td>Namespace for <acronym>OWL</acronym> [<a
      href="#ref-owl">OWL</a>].</td>
    </tr>
    <tr>
      <td scope="row"><code>rdf</code></td>
      <td><code>http://www.w3.org/1999/02/22-rdf-syntax-ns#</code></td>
      <td>Namespace for <acronym>RDF</acronym> [<a
      href="#ref-rdf">RDF</a>].</td>
    </tr>
  </tbody>
</table>

<table id="tab-externalResources">
  <caption>Table 2: <acronym>RDF</acronym> data used by this document.</caption>
  <tbody>
    <tr>
      <th><acronym>URI</acronym></th>
      <th>Description</th>
    </tr>
    <tr>
      <td><code>http://www.w3.org/2011/http-headers</code></td>
      <td><acronym>HTTP</acronym> headers as registered by the <acronym
        title="Internet Assigned Numbers Authority">IANA</acronym> (see [<a
        href="#ref-rfc4229">RFC4229</a>], [<a href="#ref-permheaders">Permanent
        Headers</a>], and [<a href="#ref-provheaders">Provisional
      Headers</a>]).</td>
    </tr>
    <tr>
      <td><code>http://www.w3.org/2011/http-methods</code></td>
      <td><acronym>HTTP</acronym> methods for requests.</td>
    </tr>
    <tr>
      <td><code>http://www.w3.org/2011/http-statusCodes</code></td>
      <td><acronym>HTTP</acronym> status codes for responses.</td>
    </tr>
  </tbody>
</table>

<h3><a id="use-cases" name="use-cases">1.2 Use Cases</a></h3>

<p>The following (non-exhaustive) list of use cases aims to highlight some of
the different usages of the terms provided by this document:</p>
<dl>
  <dt><a id="use-case1" name="use-case1">Reporting Test Results</a></dt>
    <dd>When Web resources are tested, for example for accessibility or other
      quality assurance testing, it may be significant to record the exact
      headers exchanged between the server and the client during the testing.
      Without a record of the exchanged headers, it may not be possible to
      re-identify the exact resource (or representation of the resource) that
      has been tested. The terms provided by this document allow quality
      assurance tools to record the <acronym
      title="Hypertext Transfer Protocol">HTTP</acronym> exchange between a
      client and a server, for example to record the POST parameters or the
      headers used during content negotiation. The terms provided by this
      document can be used in combination with the <acronym
      title="World Wide Web Consortium">W3C</acronym> Evaluation And Report
      Language (<acronym>EARL</acronym>) [<a href="#ref-earl">EARL</a>].</dd>
  <dt><a id="use-case2" name="use-case2">Precising Conformance Claims</a></dt>
    <dd>Conformance claims that are made about a Web resource or group of Web
      resource, are sometimes only applicable under certain constraints. For
      example, conformance of a Web site to the W3C Web Content Accessibility
      Guidelines (<acronym>WCAG</acronym>) [<a href="#ref-wcag">WCAG</a>], may
      only be applicable for a certain language of the Web site that is using
      language negotiation. When providing machine-readable conformance claims,
      for example using the W3C Protocol for Describing Web Resources (POWDER):
      Description Resources [<a href="#ref-powder-dr">POWDER-DR</a>], it is
      important to precise any such constraints that may apply.</dd>
  <dt><a id="use-case3" name="use-case3">Debugging Web Applications</a></dt>
    <dd>Web applications using client-side scripting such as <acronym
      title="Asynchronous JavaScript and XML">AJAX</acronym> may exchange
      additional <acronym>HTTP</acronym> messages with the server without using
      a different <acronym>URI</acronym>. In order to debug such Web
      applications, it must be possible to reconstruct the exact history of the
      states through which the Web application passed. Web authoring tools that
      are designed to develop and debug Web applications could use the terms
      provided by this document to record the exact <acronym>HTTP</acronym>
      messages exchanged between a client and a server. This information could
      be provided to the developer as a log to help debug errors in the Web
      application.</dd>
  <dt><a id="use-case4" name="use-case4">Indexing Information Resources</a></dt>
    <dd>When indexing <acronym>RDF</acronym> information resources that are
      available through the <acronym>HTTP</acronym> protocol (also called
      "scuttering" in Semantic Web parlance), it is often useful to record
      information about the <acronym>HTTP</acronym> request and response
      messages that were exchanged, along with the data for later use. In some
      instances, different representations of the <acronym>RDF</acronym>
      information may be retrieved from the server depending on the
      <acronym>HTTP</acronym> headers and parameters exchanged. The terms
      provided by this document can be used to supplement the collected data
      with the <acronym>HTTP</acronym> messages as part of a comprehensive
      indexing repository.</dd>
</dl>

<h3><a id="limitations" name="limitations">1.3 Limitations</a></h3>

<p>There are also notable schema limitations in regard to security and privacy
since the content recorded by this vocabulary could potentially contain
sensitive information, for example authentication information in <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> headers or other
information (login user name, passwords, and so on) within the body of the
message. Since the schema of this document is limited to terms defined by the
<acronym>HTTP</acronym> vocabulary, security and privacy considerations need to
be made at the application level. For example, certain parts of the data may be
restricted to appropriate user permissions or obfuscated.</p>

<h2><a id="classes" name="classes">2 Classes</a></h2>

<p>This section defines <acronym
title="Resource Description Framework">RDF</acronym> classes for the <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> 1.1 specification according
to [<a href="#ref-rfc2616">RFC2616</a>].</p>

<h3><a id="ConnectionClass" name="ConnectionClass">2.1 Connection Class</a></h3>

<p>A connection that is used for the <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> transfer.</p>

<h4><a id="ConnectionClassProperties" name="ConnectionClassProperties">Related
Properties</a></h4>
<ul>
  <li>Domain of: 
    <ul>
      <li><a
        href="#connectionAuthorityProperty"><code>http:connectionAuthority</code></a></li>
      <li><a href="#requestsProperty"><code>http:requests</code></a></li>
    </ul>
  </li>
  <li>Range of: none</li>
</ul>

<h4><a id="ConnectionClassExamples"
name="ConnectionClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.1:</strong> A <code>Connection</code> resource.</p>
<pre>&lt;http:Connection rdf:ID="conn"&gt;
  &lt;http:connectionAuthority&gt;www.example.org:80&lt;/http:connectionAuthority&gt;
  &lt;http:requests rdf:parseType="Collection"&gt;
    &lt;http:Request rdf:ID="req0"/&gt;
    &lt;http:Request rdf:ID="req1"/&gt;
  &lt;/http:requests&gt;
&lt;/http:Connection&gt;</pre>
</div>

<h3><a id="MessageClass" name="MessageClass">2.2 Message Class</a></h3>

<p>An <acronym title="Hyper Text Transfer Protocol">HTTP</acronym> message.</p>

<h4><a id="MessageClassProperties" name="MessageClassProperties">Related
Properties</a></h4>
<ul>
  <li>Domain of: 
    <ul>
      <li><a href="#httpVersionProperty"><code>http:httpVersion</code></a></li>
      <li><a href="#headersProperty"><code>http:headers</code></a></li>
      <li><a href="#bodyProperty"><code>http:body</code></a></li>
    </ul>
  </li>
  <li>Range of: none</li>
</ul>

<p>It may be appropriate to provide additional information about the Message by
using the following from external vocabularies:</p>
<dl>
  <dt><a
  href="http://dublincore.org/documents/dcmi-terms/#terms-date"><code>dct:date</code>
  <img alt="external link" src="http://www.w3.org/Icons/tr.png" /></a></dt>
    <dd>Message date (see the usage of this property in <a
      href="#dateReq">requests</a> and <a href="#dateResp">responses</a>).</dd>
</dl>

<h4><a id="MessageClassExamples" name="MessageClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.2:</strong> A <code>Message</code> resource.</p>
<pre>&lt;http:Message rdf:ID="mess0"&gt;
  &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
  &lt;dct:date&gt;2007-09-13&lt;/dct:date&gt;
  &lt;http:headers rdf:parseType="Collection"&gt;
    &lt;http:MessageHeader rdf:ID="mh0"/&gt;
    &lt;http:MessageHeader rdf:ID="mh1"/&gt;
  &lt;/http:headers&gt;
  &lt;http:body&gt;
    &lt;cnt:Content rdf:ID="cont0"/&gt;
  &lt;/http:body&gt;
&lt;/http:Message&gt;</pre>
</div>

<p>There are two subclasses from the <code>http:Message</code> class: <a
href="#RequestClass"><code>http:Request</code></a> and <a
href="#ResponseClass"><code>http:Response</code></a>.</p>

<h4><a id="RequestClass" name="RequestClass">2.2.1 Request Class</a></h4>

<p>An <acronym title="Hyper Text Transfer Protocol">HTTP</acronym> request. The
<code>http:Request</code> class is a subclass of the <a
href="#MessageClass"><code>http:Message</code></a> class.</p>

<h5><a id="RequestClassProperties" name="RequestClassProperties">Related
Properties</a></h5>
<ul>
  <li>Domain of: 
    <ul>
      <li><a href="#methodNameProperty"><code>http:methodName</code></a></li>
      <li><a href="#mthdProperty"><code>http:mthd</code></a></li>
      <li><a href="#requestURIProperty"><code>http:requestURI</code></a></li>
      <li><a href="#respProperty"><code>http:resp</code></a></li>
    </ul>
  </li>
  <li>Range of: none</li>
</ul>

<p><a id="dateReq" name="dateReq">The <code>dct:date</code> property</a> when
used in a <code>Request</code> resource represents the date the request was
<strong>sent</strong> by the client.</p>

<h5><a id="RequestClassExamples" name="RequestClassExamples">Examples</a></h5>

<div class="example">
<p><strong>Example 2.3:</strong> A <code>Request</code> resource.</p>
<pre>&lt;http:Request rdf:ID="reqs0"&gt;
  &lt;http:absolutePath&gt;/&lt;/http:absolutePath&gt;
  &lt;http:methodName&gt;GET&lt;/http:methodName&gt;
  &lt;http:mthd rdf:resource="http://www.w3.org/2011/http-methods#GET"/&gt;
  &lt;http:resp rdf:resource="#resp0"/&gt;
  &lt;dct:date&gt;2007-09-13&lt;/dct:date&gt;
  &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
  &lt;http:headers rdf:parseType="Collection"&gt;
    &lt;http:MessageHeader rdf:about="#mh0"/&gt;
    &lt;http:MessageHeader rdf:about="#mh1"/&gt;
  &lt;/http:headers&gt;
&lt;/http:Request&gt;</pre>
</div>

<h4><a id="ResponseClass" name="ResponseClass">2.2.2 Response Class</a></h4>

<p>An <acronym title="Hyper Text Transfer Protocol">HTTP</acronym> response.
The <code>http:Response</code> class is a subclass of the <a
href="#MessageClass"><code>http:Message</code></a> class.</p>

<h5><a id="ResponseClassProperties" name="ResponseClassProperties">Related
Properties</a></h5>
<ul>
  <li>Domain of: 
    <ul>
      <li><a
        href="#statusCodeValueProperty"><code>http:statusCodeValue</code></a></li>
      <li><a href="#scProperty"><code>http:sc</code></a></li>
      <li><a
      href="#reasonPhraseProperty"><code>http:reasonPhrase</code></a></li>
    </ul>
  </li>
  <li>Range of: 
    <ul>
      <li><a href="#respProperty"><code>http:resp</code></a></li>
    </ul>
  </li>
</ul>

<p><a id="dateResp" name="dateResp">The <code>dct:date</code> property</a> when
used in a <code>Response</code> resource represents the date the response was
<strong>received</strong> by the client.</p>

<h5><a id="ResponseClassExamples" name="ResponseClassExamples">Examples</a></h5>

<div class="example">
<p><strong>Example 2.4:</strong> A <code>Response</code> resource.</p>
<pre>&lt;http:Response rdf:ID="resp0"&gt;
  &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
  &lt;dct:date&gt;2008-01-11&lt;/dct:date&gt;
  &lt;http:statusCodeValue&gt;200&lt;/http:statusCodeValue&gt;
  &lt;http:sc rdf:resource="http://www.w3.org/2011/http-statusCodes#OK"/&gt;
  &lt;http:headers rdf:parseType="Collection"&gt;
    &lt;http:MessageHeader rdf:about="#mh2"/&gt;
    &lt;http:MessageHeader rdf:about="#mh3"/&gt;
  &lt;/http:headers&gt;
  &lt;http:body&gt;
    &lt;cnt:Content rdf:ID="cont0"/&gt;
  &lt;/http:body&gt;
&lt;/http:Response&gt;</pre>
</div>

<h3><a id="MessageHeaderClass" name="MessageHeaderClass">2.3 MessageHeader
Class</a></h3>

<p>A header in an <acronym title="Hyper Text Transfer Protocol">HTTP</acronym>
message.</p>

<h4><a id="MessageHeaderClassProperties"
name="MessageHeaderClassProperties">Related Properties</a></h4>
<ul>
  <li>Domain of: 
    <ul>
      <li><a href="#fieldNameProperty"><code>http:fieldName</code></a></li>
      <li><a href="#hdrNameProperty"><code>http:hdrName</code></a></li>
      <li><a href="#fieldValueProperty"><code>http:fieldValue</code></a></li>
      <li><a
      href="#headerElementsProperty"><code>http:headerElements</code></a></li>
    </ul>
  </li>
  <li>Range of: none</li>
</ul>

<h4><a id="MessageHeaderClassExamples"
name="MessageHeaderClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.5:</strong> A <code>MessageHeader</code> resource.</p>
<pre>&lt;http:MessageHeader rdf:ID="mh0"&gt;
  &lt;http:fieldValue&gt;text/html, image/png, image/gif;q=0.8&lt;/http:fieldValue&gt;
  &lt;http:fieldName&gt;Accept&lt;/http:fieldName&gt;
  &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#accept"/&gt;
  &lt;http:headerElements rdf:parseType="Collection"&gt;
    &lt;http:HeaderElement rdf:about="#he0"/&gt;
    &lt;http:HeaderElement rdf:about="#he1"/&gt;
    &lt;http:HeaderElement rdf:about="#he2"/&gt;
  &lt;/http:headerElements&gt;
&lt;/http:MessageHeader&gt;</pre>
</div>

<h4><a id="GeneralHeaderClass" name="GeneralHeaderClass">2.3.1 GeneralHeader
Class</a></h4>

<p>A general header in an <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> message. The
<code>http:GeneralHeader</code> class is a subclass of the <a
href="#MessageHeaderClass"><code>http:MessageHeader</code></a> class.</p>

<h4><a id="GeneralHeaderClassProperties"
name="GeneralHeaderClassProperties">Related Properties</a></h4>
<ul>
  <li>Domain of: none</li>
  <li>Range of: none</li>
</ul>

<h4><a id="GeneralHeaderClassExamples"
name="GeneralHeaderClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.6:</strong> A <code>GeneralHeader</code> resource.</p>
<pre>&lt;http:GeneralHeader rdf:ID="gh0"&gt;
  &lt;http:fieldValue&gt;chunked&lt;/http:fieldValue&gt;
  &lt;http:fieldName&gt;Transfer-Encoding&lt;/http:fieldName&gt;
  &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#transfer-encoding"/&gt;
&lt;/http:GeneralHeader&gt;</pre>
</div>

<h4><a id="RequestHeaderClass" name="RequestHeaderClass">2.3.2 RequestHeader
Class</a></h4>

<p>A header in an <acronym title="Hyper Text Transfer Protocol">HTTP</acronym>
request message. The <code>http:RequestHeader</code> class is a subclass of the
<a href="#MessageHeaderClass"><code>http:MessageHeader</code></a> class.</p>

<h4><a id="RequestHeaderClassProperties"
name="RequestHeaderClassProperties">Related Properties</a></h4>
<ul>
  <li>Domain of: none</li>
  <li>Range of: none</li>
</ul>

<h4><a id="RequestHeaderClassExamples"
name="RequestHeaderClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.7:</strong> A <code>RequestHeader</code> resource.</p>
<pre>&lt;http:RequestHeader rdf:ID="rh0"&gt;
  &lt;http:fieldValue&gt;text/html&lt;/http:fieldValue&gt;
  &lt;http:fieldName&gt;Accept&lt;/http:fieldName&gt;
  &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#accept"/&gt;
&lt;/http:RequestHeader&gt;</pre>
</div>

<h4><a id="ResponseHeaderClass" name="ResponseHeaderClass">2.3.3 ResponseHeader
Class</a></h4>

<p>A header in an <acronym title="Hyper Text Transfer Protocol">HTTP</acronym>
response message. The <code>http:ResponseHeader</code> class is a subclass of
the <a href="#MessageHeaderClass"><code>http:MessageHeader</code></a> class.</p>

<h4><a id="ResponseHeaderClassProperties"
name="ResponseHeaderClassProperties">Related Properties</a></h4>
<ul>
  <li>Domain of: none</li>
  <li>Range of: none</li>
</ul>

<h4><a id="ResponseHeaderClassExamples"
name="ResponseHeaderClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.8:</strong> A <code>ResponseHeader</code> resource.</p>
<pre>&lt;http:ResponseHeader rdf:ID="reh0"&gt;
  &lt;http:fieldValue&gt;bytes&lt;/http:fieldValue&gt;
  &lt;http:fieldName&gt;Accept-Ranges&lt;/http:fieldName&gt;
  &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#accept-ranges"/&gt;
&lt;/http:ResponseHeader&gt;</pre>
</div>

<h3><a id="EntityHeaderClass" name="EntityHeaderClass">2.4 EntityHeader
Class</a></h3>

<p>An entity header in an <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> message. The
<code>http:EntityHeader</code> class is a subclass of the <a
href="#MessageHeaderClass"><code>http:MessageHeader</code></a> class.</p>

<h4><a id="EntityHeaderClassProperties"
name="EntityHeaderClassProperties">Related Properties</a></h4>
<ul>
  <li>Domain of: none</li>
  <li>Range of: none</li>
</ul>

<h4><a id="EntityHeaderClassExamples"
name="EntityHeaderClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.9:</strong> A <code>EntityHeader</code> resource.</p>
<pre>&lt;http:EntityHeader rdf:ID="eh0"&gt;
  &lt;http:fieldValue&gt;3495&lt;/http:fieldValue&gt;
  &lt;http:fieldName&gt;Content-Length&lt;/http:fieldName&gt;
  &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#content-length"/&gt;
&lt;/http:EntityHeader&gt;</pre>
</div>

<h3><a id="HeaderElementClass" name="HeaderElementClass">2.5 HeaderElement
Class</a></h3>

<p>An element in a header value, if a <a href="#MessageHeaderClass">Message
Header</a> value can be decomposed into several parts.</p>

<h4><a id="HeaderElementClassProperties"
name="HeaderElementClassProperties">Related Properties</a></h4>
<ul>
  <li>Domain of: 
    <ul>
      <li><a href="#elementNameProperty"><code>http:elementName</code></a></li>
      <li><a
      href="#elementValueProperty"><code>http:elementValue</code></a></li>
      <li><a href="#paramsProperty"><code>http:params</code></a></li>
    </ul>
  </li>
  <li>Range of: none</li>
</ul>

<h4><a id="HeaderElementClassExamples"
name="HeaderElementClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.10:</strong> A <code>HeaderElement</code> resource.</p>
<pre>&lt;http:HeaderElement rdf:ID="he0"&gt;
  &lt;http:elementName&gt;image/gif&lt;/http:elementName&gt;
  &lt;http:params rdf:parseType="Collection"&gt;
    &lt;http:Parameter rdf:ID="param0"/&gt;
  &lt;/http:params&gt;
&lt;/http:HeaderElement&gt;</pre>
</div>

<h3><a id="ParameterClass" name="ParameterClass">2.6 Parameter Class</a></h3>

<p>A parameter in a <a href="#HeaderElementClass">Header Element</a>.</p>

<h4><a id="ParameterClassProperties" name="ParameterClassProperties">Related
Properties</a></h4>
<ul>
  <li>Domain of: 
    <ul>
      <li><a href="#paramNameProperty"><code>http:paramName</code></a></li>
      <li><a href="#paramValueProperty"><code>http:paramValue</code></a></li>
    </ul>
  </li>
  <li>Range of: none</li>
</ul>

<h4><a id="ParameterClassExamples"
name="ParameterClassExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 2.11:</strong> A <code>Parameter</code> resource.</p>
<pre>&lt;http:Parameter rdf:ID="param0"&gt;
  &lt;http:paramName&gt;q&lt;/http:paramName&gt;
  &lt;http:paramValue&gt;0.8&lt;/http:paramValue&gt;
&lt;/http:Parameter&gt;</pre>
</div>

<h3><a id="MethodClass" name="MethodClass">2.7 Method Class</a></h3>

<p>The <acronym title="Hyper Text Transfer Protocol">HTTP</acronym> 1.1
specification defines eight methods: OPTIONS, GET, HEAD, POST, PUT, DELETE,
TRACE, CONNECT. Additionally [<a href="#ref-rfc5789">RFC5789</a>] defines the
PATCH method. The <acronym title="Resource Description Framework">RDF</acronym>
graph available in <acronym>RDF</acronym>/<acronym
title="Extensible Markup Language">XML</acronym> at <a
href="http://www.w3.org/2011/http-methods"><code>http://www.w3.org/2011/http-methods</code></a>
provides <code>http:Method</code> resources for each of these to be used as
objects for the <a href="#mthdProperty"><code>http:mthd</code></a> property. A
resource of type <code>http:Method</code> represents the name of a method used
with <acronym>HTTP</acronym>.</p>

<h4><a id="MethodClassProperties" name="MethodClassProperties">Related
Properties</a></h4>
<ul>
  <li>Domain of: none</li>
  <li>Range of: 
    <ul>
      <li><a href="#mthdProperty"><code>http:mthd</code></a></li>
    </ul>
  </li>
</ul>

<h3><a id="StatusCodeClass" name="StatusCodeClass">2.8 StatusCode Class</a></h3>

<p>[<a href="#ref-status-codes">HTTP Status Codes</a>] is a registry for status
codes too be used in <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym>. The <acronym
title="Resource Description Framework">RDF</acronym> graph available in
<acronym>RDF</acronym>/<acronym
title="Extensible Markup Language">XML</acronym> at <a
href="http://www.w3.org/2011/http-statusCodes"><code>http://www.w3.org/2011/http-statusCodes</code></a>
provides <code>http:StatusCode</code> resources for each of these to be used as
objects for the <a href="#scProperty"><code>http:sc</code></a> property. A
resource of type <code>http:StatusCode</code> represents a status code.</p>

<h4><a id="StatusCodeClassProperties" name="StatusCodeClassProperties">Related
Properties</a></h4>
<ul>
  <li>Domain of: 
    <ul>
      <li><a
        href="#statusCodeNumberProperty"><code>http:statusCodeNumber</code></a></li>
    </ul>
  </li>
  <li>Range of: 
    <ul>
      <li><a href="#scProperty"><code>http:sc</code></a></li>
    </ul>
  </li>
</ul>

<h3><a id="HeaderNameClass" name="HeaderNameClass">2.9 HeaderName Class</a></h3>

<p>Header names to be used in <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> are registered by the
<acronym title="Internet Assigned Numbers Authority">IANA</acronym> (see [<a
href="#ref-rfc4229">RFC4229</a>], [<a href="#ref-permheaders">Permanent
Headers</a>], and [<a href="#ref-provheaders">Provisional Headers</a>]). The
<acronym title="Resource Description Framework">RDF</acronym> graph available
in <acronym>RDF</acronym>/<acronym
title="Extensible Markup Language">XML</acronym> at <a
href="http://www.w3.org/2011/http-headers"><code>http://www.w3.org/2011/http-headers</code></a>
provides <code>http:HeaderName</code> resources for each of these to be used as
objects for the <a href="#hdrNameProperty"><code>http:hdrName</code></a>
property. A resource of type <code>http:HeaderName</code> represents the name
of a header used with <acronym>HTTP</acronym>.</p>

<h4><a id="HeaderNameClassProperties" name="HeaderNameClassProperties">Related
Properties</a></h4>

<p>Properties defined by this document:</p>
<ul>
  <li>Domain of: none</li>
  <li>Range of: 
    <ul>
      <li><a href="#hdrNameProperty"><code>http:hdrName</code></a></li>
    </ul>
  </li>
</ul>

<h2><a id="properties" name="properties">3 Properties</a></h2>

<p>This section defines <acronym
title="Resource Description Framework">RDF</acronym> properties for the
<acronym title="Hyper Text Transfer Protocol">HTTP</acronym> 1.1 specification
according to [<a href="#ref-rfc2616">RFC2616</a>].</p>

<h3><a id="bodyProperty" name="bodyProperty">3.1 body Property</a></h3>

<p>This property relates a resource object of the type <code>Message</code> to
a resource object of the type <code>cnt:Content</code> or a subclass thereof to
be the Message's entity body as defined in [<a
href="#ref-rfc2616">RFC2616</a>]. <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> bodies are series of bytes.
Thus for the resource object, it is appropriate to point to a
<code>cnt:ContentAsBase64</code> resource (see [<a
href="#ref-content-in-rdf">Content-in-RDF</a>] for more information on content
representations using the Resource Desription Framework
(<acronym>RDF</acronym>)).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageClass"><code>http:Message</code></a></dd>
  <dt>Range:</dt>
    <dd><a
      href="http://www.w3.org/TR/Content-in-RDF/#ContentAsBase64Class"><code>cnt:ContentAsBase64</code>
      <img alt="external link" src="http://www.w3.org/Icons/tr.png" /></a></dd>
</dl>

<h4><a id="bodyPropertyExamples" name="bodyPropertyExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 3.1:</strong> The entity body of a message.</p>
<pre>&lt;http:Message rdf:ID="mess0"&gt;
    &lt;http:body&gt;
      &lt;cnt:ContentAsBase64 rdf:ID="cont0-bin"/&gt;
    &lt;/http:body&gt;
  &lt;/http:Message&gt;</pre>
</div>

<h3><a id="connectionAuthorityProperty" name="connectionAuthorityProperty">3.2
connectionAuthority Property</a></h3>

<p>Connection authority: server, host and port for a connection.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ConnectionClass"><code>http:Connection</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="elementNameProperty" name="elementNameProperty">3.3 elementName
Property</a></h3>

<p>Header element name (Literal).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#HeaderElementClass"><code>http:HeaderElement</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="elementValueProperty" name="elementValueProperty">3.4 elementValue
Property</a></h3>

<p>Header element value (Literal).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#HeaderElementClass"><code>http:HeaderElement</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="fieldNameProperty" name="fieldNameProperty">3.5 fieldName
Property</a></h3>

<p>Header name (Literal).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="fieldValueProperty" name="fieldValueProperty">3.6 fieldValue
Property</a></h3>

<p>Header value (Literal).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="headersProperty" name="headersProperty">3.7 headers Property</a></h3>

<p><acronym title="Hyper Text Transfer Protocol">HTTP</acronym> headers sent
with the message.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageClass"><code>http:Message</code></a></dd>
  <dt>Range:</dt>
    <dd>unspecified</dd>
</dl>

<h3><a id="headerElementsProperty" name="headerElementsProperty">3.8
headerElements Property</a></h3>

<p>Header value elements.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></dd>
  <dt>Range:</dt>
    <dd>unspecified</dd>
</dl>

<h3><a id="hdrNameProperty" name="hdrNameProperty">3.9 hdrName Property</a></h3>

<p>This property relates a resource of type <code>http:MessageHeader</code> to
a resource of type <code>http:HeaderName</code>.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></dd>
  <dt>Range:</dt>
    <dd><a href="#HeaderNameClass"><code>http:HeaderName</code></a></dd>
</dl>

<h3><a id="httpVersionProperty" name="httpVersionProperty">3.10 httpVersion
Property</a></h3>

<p>Property representing the <acronym
title="Hyper Text Transfer Protocol">HTTP</acronym> version number as a Literal
(the format is <em>'digit.digit'</em>).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#MessageClass"><code>http:Message</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="mthdProperty" name="mthdProperty">3.11 mthd Property</a></h3>

<p><acronym title="Hyper Text Transfer Protocol">HTTP</acronym> method.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#RequestClass"><code>http:Request</code></a></dd>
  <dt>Range:</dt>
    <dd><a href="#MethodClass"><code>http:Method</code></a></dd>
</dl>

<h3><a id="methodNameProperty" name="methodNameProperty">3.12 methodName
Property</a></h3>

<p><acronym title="Hyper Text Transfer Protocol">HTTP</acronym> method name
(Literal).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#RequestClass"><code>http:Request</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="paramsProperty" name="paramsProperty">3.13 params Property</a></h3>

<p>Header element parameters.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#HeaderElementClass"><code>http:HeaderElement</code></a></dd>
  <dt>Range:</dt>
    <dd>unspecified</dd>
</dl>

<h3><a id="paramNameProperty" name="paramNameProperty">3.14 paramName
Property</a></h3>

<p>Parameter name.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ParameterClass"><code>http:Parameter</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="paramValueProperty" name="paramValueProperty">3.15 paramValue
Property</a></h3>

<p>Parameter value.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ParameterClass"><code>http:Parameter</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="reasonPhraseProperty" name="reasonPhraseProperty">3.16 reasonPhrase
Property</a></h3>

<p>Reason phrase sent by the server.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ResponseClass"><code>http:Response</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h3><a id="requestsProperty" name="requestsProperty">3.17 requests
Property</a></h3>

<p><acronym title="Hyper Text Transfer Protocol">HTTP</acronym> requests sent
via the connection.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ConnectionClass"><code>http:Connection</code></a></dd>
  <dt>Range:</dt>
    <dd>unspecified</dd>
</dl>

<h3><a id="requestURIProperty" name="requestURIProperty">3.18 requestURI
Property</a></h3>

<p>The request <acronym title="Uniform Resource Identifier">URI</acronym> as
specified in section 5.1.2 of [<a href="#ref-rfc2616">RFC2616</a>]. This
vocabulary defines the following sub-properties:</p>
<ul>
  <li><a href="#absoluteURIProperty"><code>http:absoluteURI</code></a></li>
  <li><a href="#absolutePathProperty"><code>http:absolutePath</code></a></li>
  <li><a href="#authorityProperty"><code>http:authority</code></a></li>
</ul>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#RequestClass"><code>http:Request</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>

<h4><a id="requestURIPropertyExamples"
name="requestURIPropertyExamples">Examples</a></h4>

<div class="example">
<p><strong>Example 3.2:</strong> The use of the <code>requestURI</code>
property.</p>
<pre>&lt;http:Request&gt;
  &lt;http:methodName&gt;OPTIONS&lt;/http:methodName&gt;
  &lt;http:requestURI&gt;*&lt;/http:requestURI&gt;
  ...
&lt;/http:Request&gt;</pre>
</div>

<h4><a id="absoluteURIProperty" name="absoluteURIProperty">3.18.1 absoluteURI
Property</a></h4>

<p>Request <acronym title="Uniform Resource Identifier">URI</acronym> that is
an absolute <acronym>URI</acronym>.</p>

<h5><a id="absoluteURIPropertyExamples"
name="absoluteURIPropertyExamples">Examples</a></h5>

<div class="example">
<p><strong>Example 3.3:</strong> The use of the <code>absoluteURI</code>
property.</p>
<pre>&lt;http:Request&gt;
  &lt;http:methodName&gt;GET&lt;/http:methodName&gt;
  &lt;http:absoluteURI&gt;http://www.example.org:80/foo/bar&lt;/http:absoluteURI&gt;
  ...
&lt;/http:Request&gt;</pre>
</div>

<h4><a id="absolutePathProperty" name="absolutePathProperty">3.18.2
absolutePath Property</a></h4>

<p>Request <acronym title="Uniform Resource Identifier">URI</acronym> that is
an absolute path.</p>

<h5><a id="absolutePathPropertyExamples"
name="absolutePathPropertyExamples">Examples</a></h5>

<div class="example">
<p><strong>Example 3.4:</strong> The use of the <code>absolutePath</code>
property.</p>
<pre>&lt;http:Request&gt;
  &lt;http:methodName&gt;GET&lt;/http:methodName&gt;
  &lt;http:absolutePath&gt;/foo/bar&lt;/http:absolutePath&gt;
  ...
&lt;/http:Request&gt;</pre>
</div>

<h4><a id="authorityProperty" name="authorityProperty">3.18.3 authority
Property</a></h4>

<p>Request <acronym title="Uniform Resource Identifier">URI</acronym> that is
an authority.</p>

<h5><a id="authorityPropertyExamples"
name="authorityPropertyExamples">Examples</a></h5>

<div class="example">
<p><strong>Example 3.5:</strong> The use of the <code>authority</code>
property.</p>
<pre>&lt;http:Request&gt;
  &lt;http:methodName&gt;CONNECT&lt;/http:methodName&gt;
  &lt;http:authority&gt;www.example.org:80&lt;/http:authority&gt;
  ...
&lt;/http:Request&gt;</pre>
</div>

<h3><a id="respProperty" name="respProperty">3.19 resp Property</a></h3>

<p>This property relates a resource of type <code>http:Request</code> to a
resource of type <code>http:Response</code>.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#RequestClass"><code>http:Request</code></a></dd>
  <dt>Range:</dt>
    <dd><a href="#ResponseClass"><code>http:Response</code></a></dd>
</dl>

<h3><a id="scProperty" name="scProperty">3.20 sc Property</a></h3>

<p>This property relates a resource of type <code>http:Response</code> to a
resource of type <code>http:StatusCode</code>.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ResponseClass"><code>http:Response</code></a></dd>
  <dt>Range:</dt>
    <dd><a href="#StatusCodeClass"><code>http:StatusCode</code></a></dd>
</dl>

<h3><a id="statusCodeNumberProperty" name="statusCodeNumberProperty">3.21
statusCodeNumber Property</a></h3>

<p>The status code value (integer) corresponding to the standardized status
code value.</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#StatusCodeClass"><code>http:StatusCode</code></a></dd>
  <dt>Range:</dt>
    <dd><code>http://www.w3.org/2001/XMLSchema#int</code></dd>
</dl>

<h3><a id="statusCodeValueProperty" name="statusCodeValueProperty">3.22
statusCodeValue Property</a></h3>

<p>The actual status code value sent by the server (Literal).</p>
<dl>
  <dt>Domain:</dt>
    <dd><a href="#ResponseClass"><code>http:Response</code></a></dd>
  <dt>Range:</dt>
    <dd>Literal</dd>
</dl>
<hr />

<h2><a id="example" name="example">Appendix A: A practical Example</a></h2>

<p>The following example shows an <acronym
title="Resource Description Framework">RDF</acronym>/<acronym
title="Extensible Markup Language">XML</acronym> representation of an <acronym
title="Hypertext Transfer Protocol">HTTP</acronym> request and response
pair.</p>

<h3><a id="scenario" name="scenario">Scenario Description</a></h3>

<p>A client sends two requests to a server at <code>www.example.org</code> port
80 via <acronym>HTTP</acronym> 1.1 GET. With each request, it sends request
headers. The first request is for a resource in the document root
(<code>/</code>), the second for a resource at <code>/image</code>. While
handling the second request the server performs content negotiation respecting
the request's <code>Accept</code> header and so sends a <acronym
title="Portable Netowrk Graphics">PNG</acronym> image. This is indicated by the
response's <code>Vary</code> header.</p>

<h3><a id="code" name="code">Resulting
<acronym>RDF</acronym>/<acronym>XML</acronym></a></h3>
<pre>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
  xmlns:http="http://www.w3.org/2011/http#"
  xmlns:cnt="http://www.w3.org/2011/content#"
  xmlns:dct="http://purl.org/dc/terms/"&gt;

  &lt;http:Connection rdf:ID="conn"&gt;
    &lt;http:connectionAuthority&gt;www.example.org:80&lt;/http:connectionAuthority&gt;
    &lt;http:requests rdf:parseType="Collection"&gt;
      &lt;http:Request rdf:about="#req0"/&gt;
      &lt;http:Request rdf:about="#req1"/&gt;
    &lt;/http:requests&gt;
  &lt;/http:Connection&gt;

  &lt;http:Request rdf:about="#req0"&gt;
    &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
    &lt;http:methodName&gt;GET&lt;/http:methodName&gt;
    &lt;http:mthd rdf:resource="http://www.w3.org/2011/http-methods#GET"/&gt;
    &lt;http:absolutePath&gt;/&lt;/http:absolutePath&gt;
    &lt;http:headers rdf:parseType="Collection"&gt;
      &lt;http:RequestHeader&gt;
        &lt;http:fieldName&gt;Host&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#host"/&gt;
        &lt;http:fieldValue&gt;www.example.org&lt;/http:fieldValue&gt;
      &lt;/http:RequestHeader&gt;
      &lt;http:RequestHeader&gt;
        &lt;http:fieldName&gt;User-Agent&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#user-agent"/&gt;
        &lt;http:fieldValue&gt;My User Agent&lt;/http:fieldValue&gt;
      &lt;/http:RequestHeader&gt;
      &lt;http:RequestHeader&gt;
        &lt;http:fieldName&gt;Accept&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#accept"/&gt;
        &lt;http:fieldValue&gt;text/html, image/png, image/gif;q=0.8&lt;/http:fieldValue&gt;
        &lt;http:headerElements rdf:parseType="Collection"&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;text/html&lt;/http:elementName&gt;
          &lt;/http:HeaderElement&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;image/png&lt;/http:elementName&gt;
          &lt;/http:HeaderElement&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;image/gif&lt;/http:elementName&gt;
            &lt;http:params rdf:parseType="Collection"&gt;
              &lt;http:Parameter&gt;
                &lt;http:paramName&gt;q&lt;/http:paramName&gt;
                &lt;http:paramValue&gt;0.8&lt;/http:paramValue&gt;
              &lt;/http:Parameter&gt;
            &lt;/http:params&gt;
          &lt;/http:HeaderElement&gt;
        &lt;/http:headerElements&gt;
      &lt;/http:RequestHeader&gt;
    &lt;/http:headers&gt;
    &lt;http:resp rdf:resource="#resp0"/&gt;
  &lt;/http:Request&gt;

  &lt;http:Request rdf:about="#req1"&gt;
    &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
    &lt;http:methodName&gt;GET&lt;/http:methodName&gt;
    &lt;http:mthd rdf:resource="http://www.w3.org/2011/http-methods#GET"/&gt;
    &lt;http:absolutePath&gt;/image&lt;/http:absolutePath&gt;
    &lt;http:headers rdf:parseType="Collection"&gt;
      &lt;http:RequestHeader&gt;
        &lt;http:fieldName&gt;Host&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#host"/&gt;
        &lt;http:fieldValue&gt;www.example.org&lt;/http:fieldValue&gt;
      &lt;/http:RequestHeader&gt;
      &lt;http:RequestHeader&gt;
        &lt;http:fieldName&gt;User-Agent&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#user-agent"/&gt;
        &lt;http:fieldValue&gt;My User Agent&lt;/http:fieldValue&gt;
      &lt;/http:RequestHeader&gt;
      &lt;http:RequestHeader&gt;
        &lt;http:fieldName&gt;Accept&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#accept"/&gt;
        &lt;http:fieldValue&gt;image/png, image/gif;q=0.8&lt;/http:fieldValue&gt;
        &lt;http:headerElements rdf:parseType="Collection"&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;image/png&lt;/http:elementName&gt;
          &lt;/http:HeaderElement&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;image/gif&lt;/http:elementName&gt;
            &lt;http:params rdf:parseType="Collection"&gt;
              &lt;http:Parameter&gt;
                &lt;http:paramName&gt;q&lt;/http:paramName&gt;
                &lt;http:paramValue&gt;0.8&lt;/http:paramValue&gt;
              &lt;/http:Parameter&gt;
            &lt;/http:params&gt;
          &lt;/http:HeaderElement&gt;
        &lt;/http:headerElements&gt;
      &lt;/http:RequestHeader&gt;
    &lt;/http:headers&gt;
    &lt;http:resp rdf:resource="#resp1"/&gt;
  &lt;/http:Request&gt;

  &lt;http:Response rdf:ID="resp0"&gt;
    &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
    &lt;http:statusCodeValue&gt;200&lt;/http:statusCodeValue&gt;
    &lt;http:sc rdf:resource="http://www.w3.org/2011/http-statusCodes#OK"/&gt;
    &lt;http:reasonPhrase&gt;OK&lt;/http:reasonPhrase&gt;
    &lt;http:headers rdf:parseType="Collection"&gt;
      &lt;http:GeneralHeader&gt;
        &lt;http:fieldName&gt;Date&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#date"/&gt;
        &lt;http:fieldValue&gt;.......&lt;/http:fieldValue&gt;
      &lt;/http:GeneralHeader&gt;
      &lt;http:EntityHeader&gt;
        &lt;http:fieldName&gt;Content-Type&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#content-type"/&gt;
        &lt;http:fieldValue&gt;text/html; charset=utf-8&lt;/http:fieldValue&gt;
        &lt;http:headerElements rdf:parseType="Collection"&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;text/html&lt;/http:elementName&gt;
            &lt;http:params rdf:parseType="Collection"&gt;
              &lt;http:Parameter&gt;
                &lt;http:paramName&gt;charset&lt;/http:paramName&gt;
                &lt;http:paramValue&gt;utf-8&lt;/http:paramValue&gt;
              &lt;/http:Parameter&gt;
            &lt;/http:params&gt;
          &lt;/http:HeaderElement&gt;
        &lt;/http:headerElements&gt;
      &lt;/http:EntityHeader&gt;
    &lt;/http:headers&gt;
    &lt;http:body&gt;
      &lt;cnt:ContentAsBase64 rdf:ID="cont0-bin"&gt;
        &lt;cnt:bytes rdf:datatype="http://www.w3.org/2001/XMLSchema#base64Binary"&gt;ajrq9qguojbglj48z..........&lt;/cnt:bytes&gt;
        &lt;dct:isFormatOf rdf:resource="http://www.example.org/"/&gt;
      &lt;/cnt:ContentAsBase64&gt;
    &lt;/http:body&gt;
  &lt;/http:Response&gt;

  &lt;http:Response rdf:ID="resp1"&gt;
    &lt;http:httpVersion&gt;1.1&lt;/http:httpVersion&gt;
    &lt;http:statusCodeValue&gt;200&lt;/http:statusCodeValue&gt;
    &lt;http:sc rdf:resource="http://www.w3.org/2011/http-statusCodes#OK"/&gt;
    &lt;http:reasonPhrase&gt;OK&lt;/http:reasonPhrase&gt;
    &lt;http:headers rdf:parseType="Collection"&gt;
      &lt;http:MessageHeader&gt;
        &lt;http:fieldName&gt;Date&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#date"/&gt;
        &lt;http:fieldValue&gt;.......&lt;/http:fieldValue&gt;
      &lt;/http:MessageHeader&gt;
      &lt;http:MessageHeader&gt;
        &lt;http:fieldName&gt;Content-Type&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#content-type"/&gt;
        &lt;http:fieldValue&gt;image/png&lt;/http:fieldValue&gt;
      &lt;/http:MessageHeader&gt;
      &lt;http:MessageHeader&gt;
        &lt;http:fieldName&gt;Vary&lt;/http:fieldName&gt;
        &lt;http:hdrName rdf:resource="http://www.w3.org/2011/http-headers#vary"/&gt;
        &lt;http:fieldValue&gt;accept&lt;/http:fieldValue&gt;
        &lt;http:headerElements rdf:parseType="Collection"&gt;
          &lt;http:HeaderElement&gt;
            &lt;http:elementName&gt;accept&lt;/http:elementName&gt;
          &lt;/http:HeaderElement&gt;
        &lt;/http:headerElements&gt;
      &lt;/http:MessageHeader&gt;
    &lt;/http:headers&gt;
    &lt;http:body&gt;
      &lt;cnt:ContentAsBase64&gt;
        &lt;cnt:bytes rdf:datatype="http://www.w3.org/2001/XMLSchema#base64Binary"&gt;qouh3908t38hohfrf..........&lt;/cnt:bytes&gt;
        &lt;dct:isFormatOf rdf:resource="http://www.example.org/image"/&gt;
      &lt;/cnt:ContentAsBase64&gt;
    &lt;/http:body&gt;
  &lt;/http:Response&gt;

&lt;/rdf:RDF&gt;</pre>

<h2><a id="terms" name="terms">Appendix B: Terms</a></h2>

<p>The following terms are defined by this specification:</p>

<h3><a id="terms-classes" name="terms-classes">Classes</a></h3>

<table>
  <caption>Classes in the HTTP-in-RDF namespace</caption>
  <thead>
    <tr>
      <th scope="col">Class name</th>
      <th scope="col">Label</th>
      <th scope="col">Comment</th>
      <th scope="col">Refinements</th>
      <th scope="col">Related properties</th>
    </tr>
  </thead>
  <tbody>
    <tr id="terms-classes-Connection">
      <td scope="row"><code><a
        href="#ConnectionClass">http:Connection</a></code></td>
      <td>Connection</td>
      <td>A connection used for <acronym
        title="Hypertext Transfer Protocol">HTTP</acronym> transfer.</td>
      <td>-</td>
      <td><a
        href="#connectionAuthorityProperty"><code>http:connectionAuthority</code></a>,
        <a href="#requestsProperty"><code>http:requests</code></a></td>
    </tr>
    <tr id="terms-classes-EntityHeader">
      <td scope="row"><code><a
        href="#EntityHeaderClass">http:EntityHeader</a></code></td>
      <td>Entity Header</td>
      <td>An entity header in an <acronym>HTTP</acronym> message.</td>
      <td>-</td>
      <td><a href="#fieldNameProperty"><code>http:fieldName</code></a>, <a
        href="#fieldValueProperty"><code>http:fieldValue</code></a>, <a
        href="#hdrNameProperty"><code>http:hdrName</code></a>, <a
        href="#headerElementsProperty"><code>http:headerElements</code></a></td>
    </tr>
    <tr id="terms-classes-GeneralHeader">
      <td scope="row"><code><a
        href="#GeneralHeaderClass">http:GeneralHeader</a></code></td>
      <td>General Header</td>
      <td>A general header in an <acronym>HTTP</acronym> message.</td>
      <td>-</td>
      <td><a href="#fieldNameProperty"><code>http:fieldName</code></a>, <a
        href="#fieldValueProperty"><code>http:fieldValue</code></a>, <a
        href="#hdrNameProperty"><code>http:hdrName</code></a>, <a
        href="#headerElementsProperty"><code>http:headerElements</code></a></td>
    </tr>
    <tr id="terms-classes-HeaderElement">
      <td scope="row"><code><a
        href="#HeaderElementClass">http:HeaderElement</a></code></td>
      <td>Header Element</td>
      <td>A part of a deconstructed header value.</td>
      <td>-</td>
      <td><a href="#elementNameProperty"><code>http:elementName</code></a>, <a
        href="#elementValueProperty"><code>http:elementValue</code></a>, <a
        href="#paramsProperty"><code>http:params</code></a></td>
    </tr>
    <tr id="terms-classes-HeaderName">
      <td scope="row"><code><a
        href="#HeaderNameClass">http:HeaderName</a></code></td>
      <td>Header Name</td>
      <td>The header name.</td>
      <td>-</td>
      <td></td>
    </tr>
    <tr id="terms-classes-Message">
      <td scope="row"><code><a href="#MessageClass">http:Message</a></code></td>
      <td>Message</td>
      <td>An <acronym>HTTP</acronym> message.</td>
      <td><a href="#RequestClass">http:Request</a>, <a
        href="#ResponseClass">http:Response</a></td>
      <td><a href="#httpVersionProperty"><code>http:httpVersion</code></a>,
        <code>dct:date</code>, <a
        href="#bodyProperty"><code>http:body</code></a>, <a
        href="#headersProperty"><code>http:headers</code></a></td>
    </tr>
    <tr id="terms-classes-MessageHeader">
      <td scope="row"><code><a
        href="#MessageHeaderClass">http:MessageHeader</a></code></td>
      <td>Message Header</td>
      <td>A header in an <acronym>HTTP</acronym> message.</td>
      <td><a href="#GeneralHeaderClass">http:GeneralHeader</a>, <a
        href="#RequestHeaderClass">http:RequestHeader</a>, <a
        href="#ResponseHeaderClass">http:ResponseHeader</a>, <a
        href="#EntityHeaderClass">http:EntityHeader</a></td>
      <td><a href="#fieldNameProperty"><code>http:fieldName</code></a>, <a
        href="#fieldValueProperty"><code>http:fieldValue</code></a>, <a
        href="#hdrNameProperty"><code>http:hdrName</code></a>, <a
        href="#headerElementsProperty"><code>http:headerElements</code></a></td>
    </tr>
    <tr id="terms-classes-Method">
      <td scope="row"><code><a href="#MethodClass">http:Method</a></code></td>
      <td>Method</td>
      <td>The <acronym>HTTP</acronym> method used for a request.</td>
      <td>-</td>
      <td></td>
    </tr>
    <tr id="terms-classes-Parameter">
      <td scope="row"><code><a
      href="#ParameterClass">http:Parameter</a></code></td>
      <td>Parameter</td>
      <td>A parameter for a part of a header value</td>
      <td>-</td>
      <td><a href="#paramNameProperty"><code>http:paramName</code></a>, <a
        href="#paramValueProperty"><code>http:paramValue</code></a></td>
    </tr>
    <tr id="terms-classes-Request">
      <td scope="row"><code><a href="#RequestClass">http:Request</a></code></td>
      <td>Request</td>
      <td>An <acronym>HTTP</acronym> request.</td>
      <td>-</td>
      <td><a href="#methodNameProperty"><code>http:methodName</code></a>, <a
        href="#requestURIProperty"><code>http:requestURI</code></a>, <a
        href="#mthdProperty"><code>http:mthd</code></a>, <a
        href="#respProperty"><code>http:resp</code></a></td>
    </tr>
    <tr id="terms-classes-RequestHeader">
      <td scope="row"><code><a
        href="#RequestHeaderClass">http:RequestHeader</a></code></td>
      <td>Request Header</td>
      <td>A header in an <acronym>HTTP</acronym> request message.</td>
      <td>-</td>
      <td><a href="#fieldNameProperty"><code>http:fieldName</code></a>, <a
        href="#fieldValueProperty"><code>http:fieldValue</code></a>, <a
        href="#hdrNameProperty"><code>http:hdrName</code></a>, <a
        href="#headerElementsProperty"><code>http:headerElements</code></a></td>
    </tr>
    <tr id="terms-classes-Response">
      <td scope="row"><code><a
      href="#ResponseClass">http:Response</a></code></td>
      <td>Response</td>
      <td>An <acronym>HTTP</acronym> response.</td>
      <td>-</td>
      <td><a
        href="#statusCodeValueProperty"><code>http:statusCodeValue</code></a>,
        <a href="#reasonPhraseProperty"><code>http:reasonPhrase</code></a>, <a
        href="#scProperty"><code>http:sc</code></a></td>
    </tr>
    <tr id="terms-classes-ResponseHeader">
      <td scope="row"><code><a
        href="#ResponseHeaderClass">http:ResponseHeader</a></code></td>
      <td>Response Header</td>
      <td>A general header in an <acronym>HTTP</acronym> response message.</td>
      <td>-</td>
      <td><a href="#fieldNameProperty"><code>http:fieldName</code></a>, <a
        href="#fieldValueProperty"><code>http:fieldValue</code></a>, <a
        href="#hdrNameProperty"><code>http:hdrName</code></a>, <a
        href="#headerElementsProperty"><code>http:headerElements</code></a></td>
    </tr>
    <tr id="terms-classes-StatusCode">
      <td scope="row"><code><a
        href="#StatusCodeClass">http:StatusCode</a></code></td>
      <td>Status Code</td>
      <td>The status code of an <acronym>HTTP</acronym> response.</td>
      <td>-</td>
      <td><a
        href="#statusCodeNumberProperty"><code>http:statusCodeNumber</code></a></td>
    </tr>
  </tbody>
</table>

<h3><a id="terms-properties" name="terms-properties">Properties</a></h3>

<table>
  <caption>Properties in the HTTP-in-RDF namespace</caption>
  <thead>
    <tr>
      <th scope="col">Property name</th>
      <th scope="col">Label</th>
      <th scope="col">Comment</th>
      <th scope="col">Domain</th>
      <th scope="col">Range</th>
    </tr>
  </thead>
  <tbody>
    <tr id="terms-properties-absolutePath">
      <td scope="row"><code><a
        href="#absolutePathProperty">http:absolutePath</a></code></td>
      <td>Request <acronym>URI</acronym></td>
      <td>Request <acronym title="Uniform Resource Identifier">URI</acronym>
        that is an absolute path.</td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-absoluteURI">
      <td scope="row"><code><a
        href="#absoluteURIProperty">http:absoluteURI</a></code></td>
      <td>Request <acronym>URI</acronym></td>
      <td>Request <acronym title="Uniform Resource Identifier">URI</acronym>
        that is an absolute <acronym>URI</acronym></td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-authority">
      <td scope="row"><code><a
        href="#authorityProperty">http:authority</a></code></td>
      <td>Request <acronym>URI</acronym></td>
      <td>Request <acronym title="Uniform Resource Identifier">URI</acronym>
        that is an authority.</td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-body">
      <td scope="row"><code><a href="#bodyProperty">http:body</a></code></td>
      <td>Entity body</td>
      <td>The entity body of an <acronym>HTTP</acronym> message.</td>
      <td><a href="#MessageClass"><code>http:Message</code></a></td>
      <td><code>cnt:ContentAsBase64</code></td>
    </tr>
    <tr id="terms-properties-connectionAuthority">
      <td scope="row"><code><a
        href="#connectionAuthorityProperty">http:connectionAuthority</a></code></td>
      <td>Connection authority</td>
      <td>The authority of a connection used for the <acronym>HTTP</acronym>
        transfer</td>
      <td><a href="#ConnectionClass"><code>http:Connection</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-elementName">
      <td scope="row"><code><a
        href="#elementNameProperty">http:elementName</a></code></td>
      <td>Header element name</td>
      <td>The name of a header element</td>
      <td><a href="#HeaderElementClass"><code>http:HeaderElement</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-elementValue">
      <td scope="row"><code><a
        href="#elementValueProperty">http:elementValue</a></code></td>
      <td>Header element value</td>
      <td>The value of a header element.</td>
      <td><a href="#HeaderElementClass"><code>http:HeaderElement</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-fieldName">
      <td scope="row"><code><a
        href="#fieldNameProperty">http:fieldName</a></code></td>
      <td>Field name</td>
      <td>The name of an <acronym>HTTP</acronym> header field.</td>
      <td><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-fieldValue">
      <td scope="row"><code><a
        href="#fieldValueProperty">http:fieldValue</a></code></td>
      <td>Field value</td>
      <td>The value of an <acronym>HTTP</acronym> header field.</td>
      <td><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-hdrName">
      <td scope="row"><code><a
      href="#hdrNameProperty">http:hdrName</a></code></td>
      <td>Header name</td>
      <td>The name of an <acronym>HTTP</acronym> header.</td>
      <td><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></td>
      <td><a href="#HeaderNameClass"><code>http:HeaderName</code></a></td>
    </tr>
    <tr id="terms-properties-headerElements">
      <td scope="row"><code><a
        href="#headerElementsProperty">http:headerElements</a></code></td>
      <td>Header elements</td>
      <td>The deconstructed parts of an <acronym>HTTP</acronym> header
      value.</td>
      <td><a href="#MessageHeaderClass"><code>http:MessageHeader</code></a></td>
      <td>Collection of <a
        href="#HeaderElementClass"><code>http:HeaderElement</code></a></td>
    </tr>
    <tr id="terms-properties-headers">
      <td scope="row"><code><a
      href="#headersProperty">http:headers</a></code></td>
      <td>Headers</td>
      <td>The headers in an <acronym>HTTP</acronym> message.</td>
      <td><a href="#MessageClass"><code>http:Message</code></a></td>
      <td>Collection of <a
        href="#MessageHeaderClass"><code>http:MessageHeader</code></a></td>
    </tr>
    <tr id="terms-properties-httpVersion">
      <td scope="row"><code><a
        href="#httpVersionProperty">http:httpVersion</a></code></td>
      <td><acronym>HTTP</acronym> Version</td>
      <td>The <acronym>HTTP</acronym> version of an <acronym>HTTP</acronym>
        message.</td>
      <td><a href="#MessageClass"><code>http:Message</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-methodName">
      <td scope="row"><code><a
        href="#methodNameProperty">http:methodName</a></code></td>
      <td>Method name</td>
      <td>The <acronym>HTTP</acronym> method name used for the
        <acronym>HTTP</acronym> request.</td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-mthd">
      <td scope="row"><code><a href="#mthdProperty">http:mthd</a></code></td>
      <td>Method</td>
      <td>The <acronym>HTTP</acronym> method used for the
        <acronym>HTTP</acronym> request.</td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td><a href="#MethodClass"><code>http:Method</code></a></td>
    </tr>
    <tr id="terms-properties-paramName">
      <td scope="row"><code><a
        href="#paramNameProperty">http:paramName</a></code></td>
      <td>Parameter name</td>
      <td>The name of a parameter in a part of a deconstructed
        <acronym>HTTP</acronym> header value.</td>
      <td><a href="#ParameterClass"><code>http:Parameter</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-params">
      <td scope="row"><code><a
      href="#paramsProperty">http:params</a></code></td>
      <td>Parameters</td>
      <td>The parameters in a part of a deconstructed <acronym>HTTP</acronym>
        header value.</td>
      <td><a href="#HeaderElementClass"><code>http:HeaderElement</code></a></td>
      <td>Collection of <a
        href="#ParameterClass"><code>http:Parameter</code></a></td>
    </tr>
    <tr id="terms-properties-paramValue">
      <td scope="row"><code><a
        href="#paramValueProperty">http:paramValue</a></code></td>
      <td>Parameter value</td>
      <td>The value of a parameter in a part of a deconstructed
        <acronym>HTTP</acronym> header value.</td>
      <td><a href="#ParameterClass"><code>http:Parameter</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-reasonPhrase">
      <td scope="row"><code><a
        href="#reasonPhraseProperty">http:reasonPhrase</a></code></td>
      <td>Reason phrase</td>
      <td>The reason phrase (status text) of an <acronym>HTTP</acronym>
        response.</td>
      <td><a href="#ResponseClass"><code>http:Response</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-requests">
      <td scope="row"><code><a
      href="#requestsProperty">http:requests</a></code></td>
      <td>Requests</td>
      <td>The <acronym>HTTP</acronym> requests made via a connection.</td>
      <td><a href="#ConnectionClass"><code>http:Connection</code></a></td>
      <td>Collection of <a
      href="#RequestClass"><code>http:Request</code></a></td>
    </tr>
    <tr id="terms-properties-requestURI">
      <td scope="row"><code><a
        href="#requestURIProperty">http:requestURI</a></code></td>
      <td>Request <acronym>URI</acronym></td>
      <td>The request <acronym>URI</acronym> of an <acronym>HTTP</acronym>
        request.</td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td>RDF Literal</td>
    </tr>
    <tr id="terms-properties-resp">
      <td scope="row"><code><a href="#respProperty">http:resp</a></code></td>
      <td>Response</td>
      <td>The <acronym>HTTP</acronym> response sent in answer to an
        <acronym>HTTP</acronym> request.</td>
      <td><a href="#RequestClass"><code>http:Request</code></a></td>
      <td><a href="#ResponseClass"><code>http:Response</code></a></td>
    </tr>
    <tr id="terms-properties-sc">
      <td scope="row"><code><a href="#scProperty">http:sc</a></code></td>
      <td>Status code</td>
      <td>The status code of an <acronym>HTTP</acronym> response.</td>
      <td><a href="#ResponseClass"><code>http:Response</code></a></td>
      <td><a href="#StatusCodeClass"><code>http:StatusCode</code></a></td>
    </tr>
    <tr id="terms-properties-statusCodeNumber">
      <td scope="row"><code><a
        href="#statusCodeNumberProperty">http:statusCodeNumber</a></code></td>
      <td>Status code number</td>
      <td>The standardized status code number.</td>
      <td><a href="#ResponseClass"><code>http:StatusCode</code></a></td>
      <td><code>http://www.w3.org/2001/XMLSchema#int</code></td>
    </tr>
    <tr id="terms-properties-statusCodeValue">
      <td scope="row"><code><a
        href="#statusCodeValueProperty">http:statusCodeValue</a></code></td>
      <td>Status code value</td>
      <td>The status code value of an <acronym>HTTP</acronym> response.</td>
      <td><a href="#ResponseClass"><code>http:Response</code></a></td>
      <td>RDF Literal</td>
    </tr>
  </tbody>
</table>

<h2><a id="references" name="references">Appendix C: References</a></h2>
<dl>
  <dt>[<a id="ref-content-in-rdf"
  name="ref-content-in-rdf">Content-in-RDF</a>]</dt>
    <dd><a href="http://www.w3.org/TR/Content-in-RDF10/">Representing Content
      in <acronym title="Resource Description Framework">RDF</acronym></a> -
      Johannes Koch, Carlos A Velasco, Philip Ackermann (editors). <acronym
      title="World Wide Web Consortium">W3C</acronym> Working Draft 27 April
      2011.</dd>
  <dt>[<a id="ref-earl" name="ref-earl">EARL</a>]</dt>
    <dd><a href="http://www.w3.org/WAI/intro/earl.php">Evaluation and Report
      Language (<acronym>EARL</acronym>) Overview</a> -
    <acronym>W3C</acronym></dd>
  <dt>[<a id="ref-status-codes" name="ref-status-codes">HTTP Status
  Codes</a>]</dt>
    <dd><a href="http://www.iana.org/assignments/http-status-codes">"<acronym
      title="Hypertext Transfer Protocol">HTTP</acronym> Status Code
      Registry"</a> - <acronym
      title="Internet Assigned Numbers Authority">IANA</acronym>.</dd>
  <dt>[<a id="ref-owl" name="ref-owl">OWL</a>]</dt>
    <dd><a href="http://www.w3.org/2004/OWL/">Web Ontology Language
      (<acronym>OWL</acronym>) Overview</a> - <acronym>W3C</acronym></dd>
  <dt>[<a id="ref-permheaders" name="ref-permheaders">Permanent
  Headers</a>]</dt>
    <dd><a
      href="http://www.iana.org/assignments/message-headers/perm-headers.html">Permanent
      Message Header Field Names</a> - <acronym>IANA</acronym>.</dd>
  <dt>[<a id="ref-provheaders" name="ref-provheaders">Provisional
  Headers</a>]</dt>
    <dd><a
      href="http://www.iana.org/assignments/message-headers/prov-headers.html">Provisional
      Message Header Field Names</a> - <acronym>IANA</acronym>.</dd>
  <dt>[<a id="ref-powder-dr" name="ref-powder-dr">POWDER-DR</a>]</dt>
    <dd><a href="http://www.w3.org/TR/2009/PR-powder-dr-20090604/">Protocol for
      Web Description Resources (POWDER): Description Resources</a> - P.
      Archer, K. Smith, A. Perego (editors). <acronym>W3C</acronym> Proposed
      Recommendation 04 June 2009.</dd>
  <dt>[<a id="ref-rdf" name="ref-rdf">RDF</a>]</dt>
    <dd><a href="http://www.w3.org/RDF/">Resource Description Framework
      (<acronym>RDF</acronym>) Overview</a> - <acronym>W3C</acronym></dd>
  <dt>[<a id="ref-rdf-primer" name="ref-rdf-primer">RDF-PRIMER</a>]</dt>
    <dd><a href="http://www.w3.org/TR/rdf-primer/"><acronym>RDF</acronym>
      Primer</a> - Frank Manola, Eric Miller (editors). W3C Recommendation, 10
      February 2004.</dd>
  <dt>[<a id="ref-rdfs" name="ref-rdfs">RDFS</a>]</dt>
    <dd><a href="http://www.w3.org/TR/rdf-schema/"><acronym>RDF</acronym>
      Vocabulary Description Language 1.0: <acronym>RDF</acronym> Schema</a> -
      Dan Brickley, R.V. Guha (editors). W3C Recommendation 10 February
    2004</dd>
  <dt>[<a id="ref-rfc2119" name="ref-rfc2119">RFC2119</a>]</dt>
    <dd>Request for Comments (<acronym>RFC</acronym>): 2119. <a
      href="http://www.ietf.org/rfc/rfc2119.txt">Key words for use in
      <acronym>RFC</acronym>s to Indicate Requirement Levels</a> - <acronym
      title="Internet Engineering Task Force">IETF</acronym> March 1997.</dd>
  <dt>[<a id="ref-rfc2616" name="ref-rfc2616">RFC2616</a>]</dt>
    <dd><a href="http://www.ietf.org/rfc/rfc2616.txt">Hypertext Transfer
      Protocol -- <acronym>HTTP</acronym>/1.1</a> - R. Fielding, J. Gettys, J.
      Mogul, H. Frystyk Nielsen, L. Masinter, P. Leach and T. Berners-Lee.
      <acronym>IETF</acronym> June 1999.</dd>
  <dt>[<a id="ref-rfc4229" name="ref-rfc4229">RFC4229</a>]</dt>
    <dd><a href="http://www.ietf.org/rfc/rfc4229.txt"><acronym>HTTP</acronym>
      Header Field Registrations</a> - M. Nottingham, J. Mogul.
      <acronym>IETF</acronym> December 2005.</dd>
  <dt>[<a id="ref-rfc5789" name="ref-rfc5789">RFC5789</a>]</dt>
    <dd><a href="http://www.ietf.org/rfc/rfc5789.txt">PATCH Method for
      <acronym>HTTP</acronym></a> - L. Dusseault, Linden Lab, J. Snell.
      <acronym>IETF</acronym> March 2010.</dd>
  <dt>[<a id="ref-wcag" name="ref-wcag">WCAG</a>]</dt>
    <dd><a href="http://www.w3.org/WAI/intro/wcag.php">Web Content
      Accessibility Guidelines (<acronym>WCAG</acronym>) Overview</a> -
      <acronym>W3C</acronym>.</dd>
  <dt>[<a id="ref-xml" name="ref-xml">XML</a>]</dt>
    <dd><a href="http://www.w3.org/TR/2008/REC-xml-20081126/">Extensible Markup
      Language (<acronym>XML</acronym>) 1.0 (Fifth Edition)</a> - Tim Bray,
      Jean Paoli, C. M. Sperberg-McQueen, Eve Maler, François Yergeau
      (editors). <acronym>W3C</acronym> Recommendation 26 November 2008</dd>
</dl>

<h2><a id="changes" name="changes">Appendix D: Document Changes</a></h2>

<p>The following is a list of substantial changes since the <a
href="http://www.w3.org/TR/2009/WD-HTTP-in-RDF10-20091029/">29 October 2009
Working Draft</a>:</p>
<ul>
  <li>Added new classes <code>GeneralHeader</code>,
    <code>ResponseHeader</code>, <code>RequestHeader</code> and
    <code>EntityHeader</code> as subclasses of <code>MessageHeader</code>.</li>
  <li>Added HTTP PATCH method.</li>
  <li>Added <code>statusCodeNumber</code> to class <code>StatusCode</code><a>.
    </a></li>
  <li>Changed domain of <code>statusCodeValue</code> to class
    <code>Response</code>.</li>
  <li>Fixed inconsistencies in RDF Schemas (HTTP and Status Codes). </li>
  <li>Examples adapted.</li>
  <li>Changed <code>abs_Path</code> to <code>absolutePath</code>.</li>
  <li>Removed conformance section.</li>
</ul>
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