Ignore:
Timestamp:
01/01/11 17:23:02 (9 years ago)
Author:
julian.reschke@…
Message:

bump up document dates, update to latest version of rfc2629.xslt

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1 edited

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  • draft-ietf-httpbis/06/p7-auth.html

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    66      <title>HTTP/1.1, part 7: Authentication</title><style type="text/css" title="Xml2Rfc (sans serif)">
     
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    353370</style><link rel="Contents" href="#rfc.toc">
    354371      <link rel="Author" href="#rfc.authors">
    355       <link rel="Copyright" href="#rfc.copyright">
     372      <link rel="Copyright" href="#rfc.copyrightnotice">
    356373      <link rel="Index" href="#rfc.index">
    357374      <link rel="Chapter" title="1 Introduction" href="#rfc.section.1">
     
    365382      <link rel="Appendix" title="B Collected ABNF" href="#rfc.section.B">
    366383      <link rel="Appendix" title="C Change Log (to be removed by RFC Editor before publication)" href="#rfc.section.C">
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    368       <link rel="schema.DC" href="http://purl.org/dc/elements/1.1/">
    369       <meta name="DC.Creator" content="Fielding, R.">
    370       <meta name="DC.Creator" content="Gettys, J.">
    371       <meta name="DC.Creator" content="Mogul, J.">
    372       <meta name="DC.Creator" content="Frystyk, H.">
    373       <meta name="DC.Creator" content="Masinter, L.">
    374       <meta name="DC.Creator" content="Leach, P.">
    375       <meta name="DC.Creator" content="Berners-Lee, T.">
    376       <meta name="DC.Creator" content="Lafon, Y.">
    377       <meta name="DC.Creator" content="Reschke, J. F.">
    378       <meta name="DC.Identifier" content="urn:ietf:id:draft-ietf-httpbis-p7-auth-06">
    379       <meta name="DC.Date.Issued" scheme="ISO8601" content="2009-03">
    380       <meta name="DC.Relation.Replaces" content="urn:ietf:rfc:2616">
    381       <meta name="DC.Description.Abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 7 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 7 defines HTTP Authentication.">
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     386      <meta name="dct.creator" content="Fielding, R.">
     387      <meta name="dct.creator" content="Gettys, J.">
     388      <meta name="dct.creator" content="Mogul, J.">
     389      <meta name="dct.creator" content="Frystyk, H.">
     390      <meta name="dct.creator" content="Masinter, L.">
     391      <meta name="dct.creator" content="Leach, P.">
     392      <meta name="dct.creator" content="Berners-Lee, T.">
     393      <meta name="dct.creator" content="Lafon, Y.">
     394      <meta name="dct.creator" content="Reschke, J. F.">
     395      <meta name="dct.identifier" content="urn:ietf:id:draft-ietf-httpbis-p7-auth-06">
     396      <meta name="dct.issued" scheme="ISO8601" content="2009-03-09">
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     398      <meta name="dct.abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 7 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 7 defines HTTP Authentication.">
     399      <meta name="description" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 7 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 7 defines HTTP Authentication.">
    382400   </head>
    383401   <body>
    384       <table summary="header information" class="header" border="0" cellpadding="1" cellspacing="1">
    385          <tr>
    386             <td class="header left">HTTPbis Working Group</td>
    387             <td class="header right">R. Fielding, Editor</td>
    388          </tr>
    389          <tr>
    390             <td class="header left">Internet Draft</td>
    391             <td class="header right">Day Software</td>
    392          </tr>
    393          <tr>
    394             <td class="header left">
    395                &lt;draft-ietf-httpbis-p7-auth-06&gt;
    396                
    397             </td>
    398             <td class="header right">J. Gettys</td>
    399          </tr>
    400          <tr>
    401             <td class="header left">Obsoletes: <a href="http://tools.ietf.org/html/rfc2616">2616</a> (if approved)
    402             </td>
    403             <td class="header right">One Laptop per Child</td>
    404          </tr>
    405          <tr>
    406             <td class="header left">Updates: <a href="http://tools.ietf.org/html/rfc2617">2617</a> (if approved)
    407             </td>
    408             <td class="header right">J. Mogul</td>
    409          </tr>
    410          <tr>
    411             <td class="header left">Intended status: Standards Track</td>
    412             <td class="header right">HP</td>
    413          </tr>
    414          <tr>
    415             <td class="header left">Expires: September 2009</td>
    416             <td class="header right">H. Frystyk</td>
    417          </tr>
    418          <tr>
    419             <td class="header left"></td>
    420             <td class="header right">Microsoft</td>
    421          </tr>
    422          <tr>
    423             <td class="header left"></td>
    424             <td class="header right">L. Masinter</td>
    425          </tr>
    426          <tr>
    427             <td class="header left"></td>
    428             <td class="header right">Adobe Systems</td>
    429          </tr>
    430          <tr>
    431             <td class="header left"></td>
    432             <td class="header right">P. Leach</td>
    433          </tr>
    434          <tr>
    435             <td class="header left"></td>
    436             <td class="header right">Microsoft</td>
    437          </tr>
    438          <tr>
    439             <td class="header left"></td>
    440             <td class="header right">T. Berners-Lee</td>
    441          </tr>
    442          <tr>
    443             <td class="header left"></td>
    444             <td class="header right">W3C/MIT</td>
    445          </tr>
    446          <tr>
    447             <td class="header left"></td>
    448             <td class="header right">Y. Lafon, Editor</td>
    449          </tr>
    450          <tr>
    451             <td class="header left"></td>
    452             <td class="header right">W3C</td>
    453          </tr>
    454          <tr>
    455             <td class="header left"></td>
    456             <td class="header right">J. F. Reschke, Editor</td>
    457          </tr>
    458          <tr>
    459             <td class="header left"></td>
    460             <td class="header right">greenbytes</td>
    461          </tr>
    462          <tr>
    463             <td class="header left"></td>
    464             <td class="header right">March 9, 2009</td>
    465          </tr>
     402      <table class="header">
     403         <tbody>
     404            <tr>
     405               <td class="left">HTTPbis Working Group</td>
     406               <td class="right">R. Fielding, Editor</td>
     407            </tr>
     408            <tr>
     409               <td class="left">Internet-Draft</td>
     410               <td class="right">Day Software</td>
     411            </tr>
     412            <tr>
     413               <td class="left">Obsoletes: <a href="http://tools.ietf.org/html/rfc2616">2616</a> (if approved)
     414               </td>
     415               <td class="right">J. Gettys</td>
     416            </tr>
     417            <tr>
     418               <td class="left">Updates: <a href="http://tools.ietf.org/html/rfc2617">2617</a> (if approved)
     419               </td>
     420               <td class="right">One Laptop per Child</td>
     421            </tr>
     422            <tr>
     423               <td class="left">Intended status: Standards Track</td>
     424               <td class="right">J. Mogul</td>
     425            </tr>
     426            <tr>
     427               <td class="left">Expires: September 10, 2009</td>
     428               <td class="right">HP</td>
     429            </tr>
     430            <tr>
     431               <td class="left"></td>
     432               <td class="right">H. Frystyk</td>
     433            </tr>
     434            <tr>
     435               <td class="left"></td>
     436               <td class="right">Microsoft</td>
     437            </tr>
     438            <tr>
     439               <td class="left"></td>
     440               <td class="right">L. Masinter</td>
     441            </tr>
     442            <tr>
     443               <td class="left"></td>
     444               <td class="right">Adobe Systems</td>
     445            </tr>
     446            <tr>
     447               <td class="left"></td>
     448               <td class="right">P. Leach</td>
     449            </tr>
     450            <tr>
     451               <td class="left"></td>
     452               <td class="right">Microsoft</td>
     453            </tr>
     454            <tr>
     455               <td class="left"></td>
     456               <td class="right">T. Berners-Lee</td>
     457            </tr>
     458            <tr>
     459               <td class="left"></td>
     460               <td class="right">W3C/MIT</td>
     461            </tr>
     462            <tr>
     463               <td class="left"></td>
     464               <td class="right">Y. Lafon, Editor</td>
     465            </tr>
     466            <tr>
     467               <td class="left"></td>
     468               <td class="right">W3C</td>
     469            </tr>
     470            <tr>
     471               <td class="left"></td>
     472               <td class="right">J. Reschke, Editor</td>
     473            </tr>
     474            <tr>
     475               <td class="left"></td>
     476               <td class="right">greenbytes</td>
     477            </tr>
     478            <tr>
     479               <td class="left"></td>
     480               <td class="right">March 9, 2009</td>
     481            </tr>
     482         </tbody>
    466483      </table>
    467484      <p class="title">HTTP/1.1, part 7: Authentication<br><span class="filename">draft-ietf-httpbis-p7-auth-06</span></p>
    468485      <h1><a id="rfc.status" href="#rfc.status">Status of this Memo</a></h1>
    469       <p>This Internet-Draft is submitted to IETF pursuant to, and in full conformance with, the provisions of BCP 78 and BCP 79. This
    470          document may contain material from IETF Documents or IETF Contributions published or made publicly available before November
    471          10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to
    472          allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s)
    473          controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative
    474          works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate
    475          it into languages other than English.
     486      <p>This Internet-Draft is submitted to IETF in full conformance with the provisions of BCP 78 and BCP 79. This document may contain
     487         material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s)
     488         controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of
     489         such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the
     490         copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of
     491         it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it
     492         into languages other than English.
    476493      </p>
    477494      <p>Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note
     
    482499         in progress”.
    483500      </p>
    484       <p>The list of current Internet-Drafts can be accessed at &lt;<a href="http://www.ietf.org/ietf/1id-abstracts.txt">http://www.ietf.org/ietf/1id-abstracts.txt</a>&gt;.
    485       </p>
    486       <p>The list of Internet-Draft Shadow Directories can be accessed at &lt;<a href="http://www.ietf.org/shadow.html">http://www.ietf.org/shadow.html</a>&gt;.
    487       </p>
    488       <p>This Internet-Draft will expire in September 2009.</p>
     501      <p>The list of current Internet-Drafts can be accessed at <a href="http://www.ietf.org/ietf/1id-abstracts.txt">http://www.ietf.org/ietf/1id-abstracts.txt</a>.
     502      </p>
     503      <p>The list of Internet-Draft Shadow Directories can be accessed at <a href="http://www.ietf.org/shadow.html">http://www.ietf.org/shadow.html</a>.
     504      </p>
     505      <p>This Internet-Draft will expire on September 10, 2009.</p>
    489506      <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1>
    490507      <p>Copyright © 2009 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
     
    507524      <h1 class="np" id="rfc.toc"><a href="#rfc.toc">Table of Contents</a></h1>
    508525      <ul class="toc">
    509          <li class="tocline0">1.&nbsp;&nbsp;&nbsp;<a href="#introduction">Introduction</a><ul class="toc">
    510                <li class="tocline1">1.1&nbsp;&nbsp;&nbsp;<a href="#intro.requirements">Requirements</a></li>
    511                <li class="tocline1">1.2&nbsp;&nbsp;&nbsp;<a href="#notation">Syntax Notation</a><ul class="toc">
    512                      <li class="tocline1">1.2.1&nbsp;&nbsp;&nbsp;<a href="#core.rules">Core Rules</a></li>
    513                      <li class="tocline1">1.2.2&nbsp;&nbsp;&nbsp;<a href="#abnf.dependencies">ABNF Rules defined in other Parts of the Specification</a></li>
     526         <li>1.&nbsp;&nbsp;&nbsp;<a href="#introduction">Introduction</a><ul>
     527               <li>1.1&nbsp;&nbsp;&nbsp;<a href="#intro.requirements">Requirements</a></li>
     528               <li>1.2&nbsp;&nbsp;&nbsp;<a href="#notation">Syntax Notation</a><ul>
     529                     <li>1.2.1&nbsp;&nbsp;&nbsp;<a href="#core.rules">Core Rules</a></li>
     530                     <li>1.2.2&nbsp;&nbsp;&nbsp;<a href="#abnf.dependencies">ABNF Rules defined in other Parts of the Specification</a></li>
    514531                  </ul>
    515532               </li>
    516533            </ul>
    517534         </li>
    518          <li class="tocline0">2.&nbsp;&nbsp;&nbsp;<a href="#rfc.section.2">Status Code Definitions</a><ul class="toc">
    519                <li class="tocline1">2.1&nbsp;&nbsp;&nbsp;<a href="#status.401">401 Unauthorized</a></li>
    520                <li class="tocline1">2.2&nbsp;&nbsp;&nbsp;<a href="#status.407">407 Proxy Authentication Required</a></li>
     535         <li>2.&nbsp;&nbsp;&nbsp;<a href="#rfc.section.2">Status Code Definitions</a><ul>
     536               <li>2.1&nbsp;&nbsp;&nbsp;<a href="#status.401">401 Unauthorized</a></li>
     537               <li>2.2&nbsp;&nbsp;&nbsp;<a href="#status.407">407 Proxy Authentication Required</a></li>
    521538            </ul>
    522539         </li>
    523          <li class="tocline0">3.&nbsp;&nbsp;&nbsp;<a href="#header.fields">Header Field Definitions</a><ul class="toc">
    524                <li class="tocline1">3.1&nbsp;&nbsp;&nbsp;<a href="#header.authorization">Authorization</a></li>
    525                <li class="tocline1">3.2&nbsp;&nbsp;&nbsp;<a href="#header.proxy-authenticate">Proxy-Authenticate</a></li>
    526                <li class="tocline1">3.3&nbsp;&nbsp;&nbsp;<a href="#header.proxy-authorization">Proxy-Authorization</a></li>
    527                <li class="tocline1">3.4&nbsp;&nbsp;&nbsp;<a href="#header.www-authenticate">WWW-Authenticate</a></li>
     540         <li>3.&nbsp;&nbsp;&nbsp;<a href="#header.fields">Header Field Definitions</a><ul>
     541               <li>3.1&nbsp;&nbsp;&nbsp;<a href="#header.authorization">Authorization</a></li>
     542               <li>3.2&nbsp;&nbsp;&nbsp;<a href="#header.proxy-authenticate">Proxy-Authenticate</a></li>
     543               <li>3.3&nbsp;&nbsp;&nbsp;<a href="#header.proxy-authorization">Proxy-Authorization</a></li>
     544               <li>3.4&nbsp;&nbsp;&nbsp;<a href="#header.www-authenticate">WWW-Authenticate</a></li>
    528545            </ul>
    529546         </li>
    530          <li class="tocline0">4.&nbsp;&nbsp;&nbsp;<a href="#IANA.considerations">IANA Considerations</a><ul class="toc">
    531                <li class="tocline1">4.1&nbsp;&nbsp;&nbsp;<a href="#message.header.registration">Message Header Registration</a></li>
     547         <li>4.&nbsp;&nbsp;&nbsp;<a href="#IANA.considerations">IANA Considerations</a><ul>
     548               <li>4.1&nbsp;&nbsp;&nbsp;<a href="#message.header.registration">Message Header Registration</a></li>
    532549            </ul>
    533550         </li>
    534          <li class="tocline0">5.&nbsp;&nbsp;&nbsp;<a href="#security.considerations">Security Considerations</a><ul class="toc">
    535                <li class="tocline1">5.1&nbsp;&nbsp;&nbsp;<a href="#auth.credentials.and.idle.clients">Authentication Credentials and Idle Clients</a></li>
     551         <li>5.&nbsp;&nbsp;&nbsp;<a href="#security.considerations">Security Considerations</a><ul>
     552               <li>5.1&nbsp;&nbsp;&nbsp;<a href="#auth.credentials.and.idle.clients">Authentication Credentials and Idle Clients</a></li>
    536553            </ul>
    537554         </li>
    538          <li class="tocline0">6.&nbsp;&nbsp;&nbsp;<a href="#ack">Acknowledgments</a></li>
    539          <li class="tocline0">7.&nbsp;&nbsp;&nbsp;<a href="#rfc.references">References</a><ul class="toc">
    540                <li class="tocline1">7.1&nbsp;&nbsp;&nbsp;<a href="#rfc.references.1">Normative References</a></li>
    541                <li class="tocline1">7.2&nbsp;&nbsp;&nbsp;<a href="#rfc.references.2">Informative References</a></li>
     555         <li>6.&nbsp;&nbsp;&nbsp;<a href="#ack">Acknowledgments</a></li>
     556         <li>7.&nbsp;&nbsp;&nbsp;<a href="#rfc.references">References</a><ul>
     557               <li>7.1&nbsp;&nbsp;&nbsp;<a href="#rfc.references.1">Normative References</a></li>
     558               <li>7.2&nbsp;&nbsp;&nbsp;<a href="#rfc.references.2">Informative References</a></li>
    542559            </ul>
    543560         </li>
    544          <li class="tocline0"><a href="#rfc.authors">Authors' Addresses</a></li>
    545          <li class="tocline0">A.&nbsp;&nbsp;&nbsp;<a href="#compatibility">Compatibility with Previous Versions</a><ul class="toc">
    546                <li class="tocline1">A.1&nbsp;&nbsp;&nbsp;<a href="#changes.from.rfc.2616">Changes from RFC 2616</a></li>
     561         <li><a href="#rfc.authors">Authors' Addresses</a></li>
     562         <li>A.&nbsp;&nbsp;&nbsp;<a href="#compatibility">Compatibility with Previous Versions</a><ul>
     563               <li>A.1&nbsp;&nbsp;&nbsp;<a href="#changes.from.rfc.2616">Changes from RFC 2616</a></li>
    547564            </ul>
    548565         </li>
    549          <li class="tocline0">B.&nbsp;&nbsp;&nbsp;<a href="#collected.abnf">Collected ABNF</a></li>
    550          <li class="tocline0">C.&nbsp;&nbsp;&nbsp;<a href="#change.log">Change Log (to be removed by RFC Editor before publication)</a><ul class="toc">
    551                <li class="tocline1">C.1&nbsp;&nbsp;&nbsp;<a href="#rfc.section.C.1">Since RFC2616</a></li>
    552                <li class="tocline1">C.2&nbsp;&nbsp;&nbsp;<a href="#rfc.section.C.2">Since draft-ietf-httpbis-p7-auth-00</a></li>
    553                <li class="tocline1">C.3&nbsp;&nbsp;&nbsp;<a href="#rfc.section.C.3">Since draft-ietf-httpbis-p7-auth-01</a></li>
    554                <li class="tocline1">C.4&nbsp;&nbsp;&nbsp;<a href="#changes.since.02">Since draft-ietf-httpbis-p7-auth-02</a></li>
    555                <li class="tocline1">C.5&nbsp;&nbsp;&nbsp;<a href="#changes.since.03">Since draft-ietf-httpbis-p7-auth-03</a></li>
    556                <li class="tocline1">C.6&nbsp;&nbsp;&nbsp;<a href="#changes.since.04">Since draft-ietf-httpbis-p7-auth-04</a></li>
    557                <li class="tocline1">C.7&nbsp;&nbsp;&nbsp;<a href="#changes.since.05">Since draft-ietf-httpbis-p7-auth-05</a></li>
     566         <li>B.&nbsp;&nbsp;&nbsp;<a href="#collected.abnf">Collected ABNF</a></li>
     567         <li>C.&nbsp;&nbsp;&nbsp;<a href="#change.log">Change Log (to be removed by RFC Editor before publication)</a><ul>
     568               <li>C.1&nbsp;&nbsp;&nbsp;<a href="#rfc.section.C.1">Since RFC2616</a></li>
     569               <li>C.2&nbsp;&nbsp;&nbsp;<a href="#rfc.section.C.2">Since draft-ietf-httpbis-p7-auth-00</a></li>
     570               <li>C.3&nbsp;&nbsp;&nbsp;<a href="#rfc.section.C.3">Since draft-ietf-httpbis-p7-auth-01</a></li>
     571               <li>C.4&nbsp;&nbsp;&nbsp;<a href="#changes.since.02">Since draft-ietf-httpbis-p7-auth-02</a></li>
     572               <li>C.5&nbsp;&nbsp;&nbsp;<a href="#changes.since.03">Since draft-ietf-httpbis-p7-auth-03</a></li>
     573               <li>C.6&nbsp;&nbsp;&nbsp;<a href="#changes.since.04">Since draft-ietf-httpbis-p7-auth-04</a></li>
     574               <li>C.7&nbsp;&nbsp;&nbsp;<a href="#changes.since.05">Since draft-ietf-httpbis-p7-auth-05</a></li>
    558575            </ul>
    559576         </li>
    560          <li class="tocline0"><a href="#rfc.index">Index</a></li>
     577         <li><a href="#rfc.index">Index</a></li>
    561578      </ul>
    562579      <h1 id="rfc.section.1" class="np"><a href="#rfc.section.1">1.</a>&nbsp;<a id="introduction" href="#introduction">Introduction</a></h1>
     
    679696      <div id="rfc.table.1">
    680697         <div id="iana.header.registration.table"></div>
    681          <table summary="" class="tt full" cellpadding="3" cellspacing="0">
     698         <table class="tt full left" cellpadding="3" cellspacing="0">
    682699            <thead>
    683700               <tr>
     
    690707            <tbody>
    691708               <tr>
    692                   <td>Authorization</td>
    693                   <td>http</td>
    694                   <td>standard</td>
    695                   <td> <a href="#header.authorization" id="rfc.xref.header.authorization.2" title="Authorization">Section&nbsp;3.1</a>
     709                  <td class="left">Authorization</td>
     710                  <td class="left">http</td>
     711                  <td class="left">standard</td>
     712                  <td class="left"> <a href="#header.authorization" id="rfc.xref.header.authorization.2" title="Authorization">Section&nbsp;3.1</a>
    696713                  </td>
    697714               </tr>
    698715               <tr>
    699                   <td>Proxy-Authenticate</td>
    700                   <td>http</td>
    701                   <td>standard</td>
    702                   <td> <a href="#header.proxy-authenticate" id="rfc.xref.header.proxy-authenticate.2" title="Proxy-Authenticate">Section&nbsp;3.2</a>
     716                  <td class="left">Proxy-Authenticate</td>
     717                  <td class="left">http</td>
     718                  <td class="left">standard</td>
     719                  <td class="left"> <a href="#header.proxy-authenticate" id="rfc.xref.header.proxy-authenticate.2" title="Proxy-Authenticate">Section&nbsp;3.2</a>
    703720                  </td>
    704721               </tr>
    705722               <tr>
    706                   <td>Proxy-Authorization</td>
    707                   <td>http</td>
    708                   <td>standard</td>
    709                   <td> <a href="#header.proxy-authorization" id="rfc.xref.header.proxy-authorization.2" title="Proxy-Authorization">Section&nbsp;3.3</a>
     723                  <td class="left">Proxy-Authorization</td>
     724                  <td class="left">http</td>
     725                  <td class="left">standard</td>
     726                  <td class="left"> <a href="#header.proxy-authorization" id="rfc.xref.header.proxy-authorization.2" title="Proxy-Authorization">Section&nbsp;3.3</a>
    710727                  </td>
    711728               </tr>
    712729               <tr>
    713                   <td>WWW-Authenticate</td>
    714                   <td>http</td>
    715                   <td>standard</td>
    716                   <td> <a href="#header.www-authenticate" id="rfc.xref.header.www-authenticate.2" title="WWW-Authenticate">Section&nbsp;3.4</a>
     730                  <td class="left">WWW-Authenticate</td>
     731                  <td class="left">http</td>
     732                  <td class="left">standard</td>
     733                  <td class="left"> <a href="#header.www-authenticate" id="rfc.xref.header.www-authenticate.2" title="WWW-Authenticate">Section&nbsp;3.4</a>
    717734                  </td>
    718735               </tr>
     
    746763      </p>
    747764      <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="ack" href="#ack">Acknowledgments</a></h1>
    748       <p id="rfc.section.6.p.1"> <span class="comment">[rfc.comment.1: TBD.]</span>
     765      <p id="rfc.section.6.p.1"> <span class="comment" id="rfc.comment.1">[<a href="#rfc.comment.1" class="smpl">rfc.comment.1</a>: TBD.]</span>
    749766      </p>
    750767      <h1 id="rfc.references"><a id="rfc.section.7" href="#rfc.section.7">7.</a> References
     
    752769      <h2 id="rfc.references.1"><a href="#rfc.section.7.1" id="rfc.section.7.1">7.1</a> Normative References
    753770      </h2>
    754       <table summary="Normative References">         
     771      <table>         
    755772         <tr>
    756773            <td class="reference"><b id="Part1">[Part1]</b></td>
    757             <td class="top"><a title="Day Software">Fielding, R., Ed.</a>, <a title="One Laptop per Child">Gettys, J.</a>, <a title="Hewlett-Packard Company">Mogul, J.</a>, <a title="Microsoft Corporation">Frystyk, H.</a>, <a title="Adobe Systems, Incorporated">Masinter, L.</a>, <a title="Microsoft Corporation">Leach, P.</a>, <a title="World Wide Web Consortium">Berners-Lee, T.</a>, <a title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a title="greenbytes GmbH">J. F. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-06">HTTP/1.1, part 1: URIs, Connections, and Message Parsing</a>”, Internet-Draft&nbsp;draft-ietf-httpbis-p1-messaging-06 (work in progress), March&nbsp;2009.
     774            <td class="top"><a href="mailto:fielding@gbiv.com" title="Day Software">Fielding, R., Ed.</a>, <a href="mailto:jg@laptop.org" title="One Laptop per Child">Gettys, J.</a>, <a href="mailto:JeffMogul@acm.org" title="Hewlett-Packard Company">Mogul, J.</a>, <a href="mailto:henrikn@microsoft.com" title="Microsoft Corporation">Frystyk, H.</a>, <a href="mailto:LMM@acm.org" title="Adobe Systems, Incorporated">Masinter, L.</a>, <a href="mailto:paulle@microsoft.com" title="Microsoft Corporation">Leach, P.</a>, <a href="mailto:timbl@w3.org" title="World Wide Web Consortium">Berners-Lee, T.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p1-messaging-06">HTTP/1.1, part 1: URIs, Connections, and Message Parsing</a>”, Internet-Draft&nbsp;draft-ietf-httpbis-p1-messaging-06 (work in progress), March&nbsp;2009.
    758775            </td>
    759776         </tr>
    760777         <tr>
    761778            <td class="reference"><b id="Part6">[Part6]</b></td>
    762             <td class="top"><a title="Day Software">Fielding, R., Ed.</a>, <a title="One Laptop per Child">Gettys, J.</a>, <a title="Hewlett-Packard Company">Mogul, J.</a>, <a title="Microsoft Corporation">Frystyk, H.</a>, <a title="Adobe Systems, Incorporated">Masinter, L.</a>, <a title="Microsoft Corporation">Leach, P.</a>, <a title="World Wide Web Consortium">Berners-Lee, T.</a>, <a title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a title="greenbytes GmbH">J. F. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache-06">HTTP/1.1, part 6: Caching</a>”, Internet-Draft&nbsp;draft-ietf-httpbis-p6-cache-06 (work in progress), March&nbsp;2009.
     779            <td class="top"><a href="mailto:fielding@gbiv.com" title="Day Software">Fielding, R., Ed.</a>, <a href="mailto:jg@laptop.org" title="One Laptop per Child">Gettys, J.</a>, <a href="mailto:JeffMogul@acm.org" title="Hewlett-Packard Company">Mogul, J.</a>, <a href="mailto:henrikn@microsoft.com" title="Microsoft Corporation">Frystyk, H.</a>, <a href="mailto:LMM@acm.org" title="Adobe Systems, Incorporated">Masinter, L.</a>, <a href="mailto:paulle@microsoft.com" title="Microsoft Corporation">Leach, P.</a>, <a href="mailto:timbl@w3.org" title="World Wide Web Consortium">Berners-Lee, T.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache-06">HTTP/1.1, part 6: Caching</a>”, Internet-Draft&nbsp;draft-ietf-httpbis-p6-cache-06 (work in progress), March&nbsp;2009.
    763780            </td>
    764781         </tr>
    765782         <tr>
    766783            <td class="reference"><b id="RFC2119">[RFC2119]</b></td>
    767             <td class="top"><a title="Harvard University">Bradner, S.</a>, “<a href="http://tools.ietf.org/html/rfc2119">Key words for use in RFCs to Indicate Requirement Levels</a>”, BCP&nbsp;14, RFC&nbsp;2119, March&nbsp;1997.
     784            <td class="top"><a href="mailto:sob@harvard.edu" title="Harvard University">Bradner, S.</a>, “<a href="http://tools.ietf.org/html/rfc2119">Key words for use in RFCs to Indicate Requirement Levels</a>”, BCP&nbsp;14, RFC&nbsp;2119, March&nbsp;1997.
    768785            </td>
    769786         </tr>
    770787         <tr>
    771788            <td class="reference"><b id="RFC2617">[RFC2617]</b></td>
    772             <td class="top"><a title="Northwestern University, Department of Mathematics">Franks, J.</a>, <a title="Verisign Inc.">Hallam-Baker, P.M.</a>, <a title="AbiSource, Inc.">Hostetler, J.L.</a>, <a title="Agranat Systems, Inc.">Lawrence, S.D.</a>, <a title="Microsoft Corporation">Leach, P.J.</a>, Luotonen, A., and <a title="Open Market, Inc.">L. Stewart</a>, “<a href="http://tools.ietf.org/html/rfc2617">HTTP Authentication: Basic and Digest Access Authentication</a>”, RFC&nbsp;2617, June&nbsp;1999.
     789            <td class="top"><a href="mailto:john@math.nwu.edu" title="Northwestern University, Department of Mathematics">Franks, J.</a>, <a href="mailto:pbaker@verisign.com" title="Verisign Inc.">Hallam-Baker, P.</a>, <a href="mailto:jeff@AbiSource.com" title="AbiSource, Inc.">Hostetler, J.</a>, <a href="mailto:lawrence@agranat.com" title="Agranat Systems, Inc.">Lawrence, S.</a>, <a href="mailto:paulle@microsoft.com" title="Microsoft Corporation">Leach, P.</a>, Luotonen, A., and <a href="mailto:stewart@OpenMarket.com" title="Open Market, Inc.">L. Stewart</a>, “<a href="http://tools.ietf.org/html/rfc2617">HTTP Authentication: Basic and Digest Access Authentication</a>”, RFC&nbsp;2617, June&nbsp;1999.
    773790            </td>
    774791         </tr>
    775792         <tr>
    776793            <td class="reference"><b id="RFC5234">[RFC5234]</b></td>
    777             <td class="top"><a title="Brandenburg InternetWorking">Crocker, D., Ed.</a> and <a title="THUS plc.">P. Overell</a>, “<a href="http://tools.ietf.org/html/rfc5234">Augmented BNF for Syntax Specifications: ABNF</a>”, STD&nbsp;68, RFC&nbsp;5234, January&nbsp;2008.
     794            <td class="top"><a href="mailto:dcrocker@bbiw.net" title="Brandenburg InternetWorking">Crocker, D., Ed.</a> and <a href="mailto:paul.overell@thus.net" title="THUS plc.">P. Overell</a>, “<a href="http://tools.ietf.org/html/rfc5234">Augmented BNF for Syntax Specifications: ABNF</a>”, STD&nbsp;68, RFC&nbsp;5234, January&nbsp;2008.
    778795            </td>
    779796         </tr>
     
    781798      <h2 id="rfc.references.2"><a href="#rfc.section.7.2" id="rfc.section.7.2">7.2</a> Informative References
    782799      </h2>
    783       <table summary="Informative References">   
     800      <table>   
    784801         <tr>
    785802            <td class="reference"><b id="RFC2616">[RFC2616]</b></td>
    786             <td class="top"><a title="University of California, Irvine">Fielding, R.</a>, <a title="W3C">Gettys, J.</a>, <a title="Compaq Computer Corporation">Mogul, J.</a>, <a title="MIT Laboratory for Computer Science">Frystyk, H.</a>, <a title="Xerox Corporation">Masinter, L.</a>, <a title="Microsoft Corporation">Leach, P.</a>, and <a title="W3C">T. Berners-Lee</a>, “<a href="http://tools.ietf.org/html/rfc2616">Hypertext Transfer Protocol -- HTTP/1.1</a>”, RFC&nbsp;2616, June&nbsp;1999.
     803            <td class="top"><a href="mailto:fielding@ics.uci.edu" title="University of California, Irvine">Fielding, R.</a>, <a href="mailto:jg@w3.org" title="W3C">Gettys, J.</a>, <a href="mailto:mogul@wrl.dec.com" title="Compaq Computer Corporation">Mogul, J.</a>, <a href="mailto:frystyk@w3.org" title="MIT Laboratory for Computer Science">Frystyk, H.</a>, <a href="mailto:masinter@parc.xerox.com" title="Xerox Corporation">Masinter, L.</a>, <a href="mailto:paulle@microsoft.com" title="Microsoft Corporation">Leach, P.</a>, and <a href="mailto:timbl@w3.org" title="W3C">T. Berners-Lee</a>, “<a href="http://tools.ietf.org/html/rfc2616">Hypertext Transfer Protocol -- HTTP/1.1</a>”, RFC&nbsp;2616, June&nbsp;1999.
    787804            </td>
    788805         </tr>
    789806         <tr>
    790807            <td class="reference"><b id="RFC3864">[RFC3864]</b></td>
    791             <td class="top"><a title="Nine by Nine">Klyne, G.</a>, <a title="BEA Systems">Nottingham, M.</a>, and <a title="HP Labs">J. Mogul</a>, “<a href="http://tools.ietf.org/html/rfc3864">Registration Procedures for Message Header Fields</a>”, BCP&nbsp;90, RFC&nbsp;3864, September&nbsp;2004.
     808            <td class="top"><a href="mailto:GK-IETF@ninebynine.org" title="Nine by Nine">Klyne, G.</a>, <a href="mailto:mnot@pobox.com" title="BEA Systems">Nottingham, M.</a>, and <a href="mailto:JeffMogul@acm.org" title="HP Labs">J. Mogul</a>, “<a href="http://tools.ietf.org/html/rfc3864">Registration Procedures for Message Header Fields</a>”, BCP&nbsp;90, RFC&nbsp;3864, September&nbsp;2004.
    792809            </td>
    793810         </tr>
    794811      </table>
    795       <h1 id="rfc.authors"><a href="#rfc.authors">Authors' Addresses</a></h1>
    796       <address class="vcard"><span class="vcardline"><span class="fn">Roy T. Fielding</span>
    797             (editor)
    798             <span class="n hidden"><span class="family-name">Fielding</span><span class="given-name">Roy T.</span></span></span><span class="org vcardline">Day Software</span><span class="adr"><span class="street-address vcardline">23 Corporate Plaza DR, Suite 280</span><span class="vcardline"><span class="locality">Newport Beach</span>, <span class="region">CA</span>&nbsp;<span class="postal-code">92660</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline tel">Phone: <a href="tel:+1-949-706-5300"><span class="value">+1-949-706-5300</span></a></span><span class="vcardline tel"><span class="type">Fax</span>: <a href="fax:+1-949-706-5305"><span class="value">+1-949-706-5305</span></a></span><span class="vcardline">EMail: <a><span class="email">fielding@gbiv.com</span></a></span><span class="vcardline">URI: <a href="http://roy.gbiv.com/" class="url">http://roy.gbiv.com/</a></span></address>
    799       <address class="vcard"><span class="vcardline"><span class="fn">Jim Gettys</span><span class="n hidden"><span class="family-name">Gettys</span><span class="given-name">Jim</span></span></span><span class="org vcardline">One Laptop per Child</span><span class="adr"><span class="street-address vcardline">21 Oak Knoll Road</span><span class="vcardline"><span class="locality">Carlisle</span>, <span class="region">MA</span>&nbsp;<span class="postal-code">01741</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">jg@laptop.org</span></a></span><span class="vcardline">URI: <a href="http://www.laptop.org/" class="url">http://www.laptop.org/</a></span></address>
    800       <address class="vcard"><span class="vcardline"><span class="fn">Jeffrey C. Mogul</span><span class="n hidden"><span class="family-name">Mogul</span><span class="given-name">Jeffrey C.</span></span></span><span class="org vcardline">Hewlett-Packard Company</span><span class="adr"><span class="street-address vcardline">HP Labs, Large Scale Systems Group</span><span class="street-address vcardline">1501 Page Mill Road, MS 1177</span><span class="vcardline"><span class="locality">Palo Alto</span>, <span class="region">CA</span>&nbsp;<span class="postal-code">94304</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">JeffMogul@acm.org</span></a></span></address>
    801       <address class="vcard"><span class="vcardline"><span class="fn">Henrik Frystyk Nielsen</span><span class="n hidden"><span class="family-name">Frystyk</span></span></span><span class="org vcardline">Microsoft Corporation</span><span class="adr"><span class="street-address vcardline">1 Microsoft Way</span><span class="vcardline"><span class="locality">Redmond</span>, <span class="region">WA</span>&nbsp;<span class="postal-code">98052</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">henrikn@microsoft.com</span></a></span></address>
    802       <address class="vcard"><span class="vcardline"><span class="fn">Larry Masinter</span><span class="n hidden"><span class="family-name">Masinter</span><span class="given-name">Larry</span></span></span><span class="org vcardline">Adobe Systems, Incorporated</span><span class="adr"><span class="street-address vcardline">345 Park Ave</span><span class="vcardline"><span class="locality">San Jose</span>, <span class="region">CA</span>&nbsp;<span class="postal-code">95110</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">LMM@acm.org</span></a></span><span class="vcardline">URI: <a href="http://larry.masinter.net/" class="url">http://larry.masinter.net/</a></span></address>
    803       <address class="vcard"><span class="vcardline"><span class="fn">Paul J. Leach</span><span class="n hidden"><span class="family-name">Leach</span><span class="given-name">Paul J.</span></span></span><span class="org vcardline">Microsoft Corporation</span><span class="adr"><span class="street-address vcardline">1 Microsoft Way</span><span class="vcardline"><span class="locality">Redmond</span>, <span class="region">WA</span>&nbsp;<span class="postal-code">98052</span></span></span><span class="vcardline">EMail: <a><span class="email">paulle@microsoft.com</span></a></span></address>
    804       <address class="vcard"><span class="vcardline"><span class="fn">Tim Berners-Lee</span><span class="n hidden"><span class="family-name">Berners-Lee</span><span class="given-name">Tim</span></span></span><span class="org vcardline">World Wide Web Consortium</span><span class="adr"><span class="street-address vcardline">MIT Computer Science and Artificial Intelligence Laboratory</span><span class="street-address vcardline">The Stata Center, Building 32</span><span class="street-address vcardline">32 Vassar Street</span><span class="vcardline"><span class="locality">Cambridge</span>, <span class="region">MA</span>&nbsp;<span class="postal-code">02139</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a><span class="email">timbl@w3.org</span></a></span><span class="vcardline">URI: <a href="http://www.w3.org/People/Berners-Lee/" class="url">http://www.w3.org/People/Berners-Lee/</a></span></address>
    805       <address class="vcard"><span class="vcardline"><span class="fn">Yves Lafon</span>
    806             (editor)
    807             <span class="n hidden"><span class="family-name">Lafon</span><span class="given-name">Yves</span></span></span><span class="org vcardline">World Wide Web Consortium</span><span class="adr"><span class="street-address vcardline">W3C / ERCIM</span><span class="street-address vcardline">2004, rte des Lucioles</span><span class="vcardline"><span class="locality">Sophia-Antipolis</span>, <span class="region">AM</span>&nbsp;<span class="postal-code">06902</span></span><span class="country-name vcardline">France</span></span><span class="vcardline">EMail: <a><span class="email">ylafon@w3.org</span></a></span><span class="vcardline">URI: <a href="http://www.raubacapeu.net/people/yves/" class="url">http://www.raubacapeu.net/people/yves/</a></span></address>
    808       <address class="vcard"><span class="vcardline"><span class="fn">Julian F. Reschke</span>
    809             (editor)
    810             <span class="n hidden"><span class="family-name">Reschke</span><span class="given-name">Julian F.</span></span></span><span class="org vcardline">greenbytes GmbH</span><span class="adr"><span class="street-address vcardline">Hafenweg 16</span><span class="vcardline"><span class="locality">Muenster</span>, <span class="region">NW</span>&nbsp;<span class="postal-code">48155</span></span><span class="country-name vcardline">Germany</span></span><span class="vcardline tel">Phone: <a href="tel:+492512807760"><span class="value">+49 251 2807760</span></a></span><span class="vcardline tel"><span class="type">Fax</span>: <a href="fax:+492512807761"><span class="value">+49 251 2807761</span></a></span><span class="vcardline">EMail: <a><span class="email">julian.reschke@greenbytes.de</span></a></span><span class="vcardline">URI: <a href="http://greenbytes.de/tech/webdav/" class="url">http://greenbytes.de/tech/webdav/</a></span></address>
    811       <h1 id="rfc.section.A"><a href="#rfc.section.A">A.</a>&nbsp;<a id="compatibility" href="#compatibility">Compatibility with Previous Versions</a></h1>
     812      <div class="avoidbreak">
     813         <h1 id="rfc.authors"><a href="#rfc.authors">Authors' Addresses</a></h1>
     814         <address class="vcard"><span class="vcardline"><span class="fn">Roy T. Fielding</span>
     815               (editor)
     816               <span class="n hidden"><span class="family-name">Fielding</span><span class="given-name">Roy T.</span></span></span><span class="org vcardline">Day Software</span><span class="adr"><span class="street-address vcardline">23 Corporate Plaza DR, Suite 280</span><span class="vcardline"><span class="locality">Newport Beach</span>, <span class="region">CA</span>&nbsp;<span class="postal-code">92660</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline tel">Phone: <a href="tel:+1-949-706-5300"><span class="value">+1-949-706-5300</span></a></span><span class="vcardline tel"><span class="type">Fax</span>: <a href="fax:+1-949-706-5305"><span class="value">+1-949-706-5305</span></a></span><span class="vcardline">EMail: <a href="mailto:fielding@gbiv.com"><span class="email">fielding@gbiv.com</span></a></span><span class="vcardline">URI: <a href="http://roy.gbiv.com/" class="url">http://roy.gbiv.com/</a></span></address>
     817         <address class="vcard"><span class="vcardline"><span class="fn">Jim Gettys</span><span class="n hidden"><span class="family-name">Gettys</span><span class="given-name">Jim</span></span></span><span class="org vcardline">One Laptop per Child</span><span class="adr"><span class="street-address vcardline">21 Oak Knoll Road</span><span class="vcardline"><span class="locality">Carlisle</span>, <span class="region">MA</span>&nbsp;<span class="postal-code">01741</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a href="mailto:jg@laptop.org"><span class="email">jg@laptop.org</span></a></span><span class="vcardline">URI: <a href="http://www.laptop.org/" class="url">http://www.laptop.org/</a></span></address>
     818         <address class="vcard"><span class="vcardline"><span class="fn">Jeffrey C. Mogul</span><span class="n hidden"><span class="family-name">Mogul</span><span class="given-name">Jeffrey C.</span></span></span><span class="org vcardline">Hewlett-Packard Company</span><span class="adr"><span class="street-address vcardline">HP Labs, Large Scale Systems Group</span><span class="street-address vcardline">1501 Page Mill Road, MS 1177</span><span class="vcardline"><span class="locality">Palo Alto</span>, <span class="region">CA</span>&nbsp;<span class="postal-code">94304</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a href="mailto:JeffMogul@acm.org"><span class="email">JeffMogul@acm.org</span></a></span></address>
     819         <address class="vcard"><span class="vcardline"><span class="fn">Henrik Frystyk Nielsen</span><span class="n hidden"><span class="family-name">Frystyk</span></span></span><span class="org vcardline">Microsoft Corporation</span><span class="adr"><span class="street-address vcardline">1 Microsoft Way</span><span class="vcardline"><span class="locality">Redmond</span>, <span class="region">WA</span>&nbsp;<span class="postal-code">98052</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a href="mailto:henrikn@microsoft.com"><span class="email">henrikn@microsoft.com</span></a></span></address>
     820         <address class="vcard"><span class="vcardline"><span class="fn">Larry Masinter</span><span class="n hidden"><span class="family-name">Masinter</span><span class="given-name">Larry</span></span></span><span class="org vcardline">Adobe Systems, Incorporated</span><span class="adr"><span class="street-address vcardline">345 Park Ave</span><span class="vcardline"><span class="locality">San Jose</span>, <span class="region">CA</span>&nbsp;<span class="postal-code">95110</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a href="mailto:LMM@acm.org"><span class="email">LMM@acm.org</span></a></span><span class="vcardline">URI: <a href="http://larry.masinter.net/" class="url">http://larry.masinter.net/</a></span></address>
     821         <address class="vcard"><span class="vcardline"><span class="fn">Paul J. Leach</span><span class="n hidden"><span class="family-name">Leach</span><span class="given-name">Paul J.</span></span></span><span class="org vcardline">Microsoft Corporation</span><span class="adr"><span class="street-address vcardline">1 Microsoft Way</span><span class="vcardline"><span class="locality">Redmond</span>, <span class="region">WA</span>&nbsp;<span class="postal-code">98052</span></span></span><span class="vcardline">EMail: <a href="mailto:paulle@microsoft.com"><span class="email">paulle@microsoft.com</span></a></span></address>
     822         <address class="vcard"><span class="vcardline"><span class="fn">Tim Berners-Lee</span><span class="n hidden"><span class="family-name">Berners-Lee</span><span class="given-name">Tim</span></span></span><span class="org vcardline">World Wide Web Consortium</span><span class="adr"><span class="street-address vcardline">MIT Computer Science and Artificial Intelligence Laboratory</span><span class="street-address vcardline">The Stata Center, Building 32</span><span class="street-address vcardline">32 Vassar Street</span><span class="vcardline"><span class="locality">Cambridge</span>, <span class="region">MA</span>&nbsp;<span class="postal-code">02139</span></span><span class="country-name vcardline">USA</span></span><span class="vcardline">EMail: <a href="mailto:timbl@w3.org"><span class="email">timbl@w3.org</span></a></span><span class="vcardline">URI: <a href="http://www.w3.org/People/Berners-Lee/" class="url">http://www.w3.org/People/Berners-Lee/</a></span></address>
     823         <address class="vcard"><span class="vcardline"><span class="fn">Yves Lafon</span>
     824               (editor)
     825               <span class="n hidden"><span class="family-name">Lafon</span><span class="given-name">Yves</span></span></span><span class="org vcardline">World Wide Web Consortium</span><span class="adr"><span class="street-address vcardline">W3C / ERCIM</span><span class="street-address vcardline">2004, rte des Lucioles</span><span class="vcardline"><span class="locality">Sophia-Antipolis</span>, <span class="region">AM</span>&nbsp;<span class="postal-code">06902</span></span><span class="country-name vcardline">France</span></span><span class="vcardline">EMail: <a href="mailto:ylafon@w3.org"><span class="email">ylafon@w3.org</span></a></span><span class="vcardline">URI: <a href="http://www.raubacapeu.net/people/yves/" class="url">http://www.raubacapeu.net/people/yves/</a></span></address>
     826         <address class="vcard"><span class="vcardline"><span class="fn">Julian F. Reschke</span>
     827               (editor)
     828               <span class="n hidden"><span class="family-name">Reschke</span><span class="given-name">Julian F.</span></span></span><span class="org vcardline">greenbytes GmbH</span><span class="adr"><span class="street-address vcardline">Hafenweg 16</span><span class="vcardline"><span class="locality">Muenster</span>, <span class="region">NW</span>&nbsp;<span class="postal-code">48155</span></span><span class="country-name vcardline">Germany</span></span><span class="vcardline tel">Phone: <a href="tel:+492512807760"><span class="value">+49 251 2807760</span></a></span><span class="vcardline tel"><span class="type">Fax</span>: <a href="fax:+492512807761"><span class="value">+49 251 2807761</span></a></span><span class="vcardline">EMail: <a href="mailto:julian.reschke@greenbytes.de"><span class="email">julian.reschke@greenbytes.de</span></a></span><span class="vcardline">URI: <a href="http://greenbytes.de/tech/webdav/" class="url">http://greenbytes.de/tech/webdav/</a></span></address>
     829      </div>
     830      <h1 id="rfc.section.A" class="np"><a href="#rfc.section.A">A.</a>&nbsp;<a id="compatibility" href="#compatibility">Compatibility with Previous Versions</a></h1>
    812831      <h2 id="rfc.section.A.1"><a href="#rfc.section.A.1">A.1</a>&nbsp;<a id="changes.from.rfc.2616" href="#changes.from.rfc.2616">Changes from RFC 2616</a></h2>
    813832      <h1 id="rfc.section.B"><a href="#rfc.section.B">B.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
     
    883902      <div class="print2col">
    884903         <ul class="ind">
    885             <li class="indline0"><a id="rfc.index.4" href="#rfc.index.4"><b>4</b></a><ul class="ind">
    886                   <li class="indline1">401 Unauthorized (status code)&nbsp;&nbsp;<a class="iref" href="#rfc.iref.2"><b>2.1</b></a></li>
    887                   <li class="indline1">407 Proxy Authentication Required (status code)&nbsp;&nbsp;<a class="iref" href="#rfc.iref.3"><b>2.2</b></a></li>
     904            <li><a id="rfc.index.4" href="#rfc.index.4"><b>4</b></a><ul>
     905                  <li>401 Unauthorized (status code)&nbsp;&nbsp;<a href="#rfc.iref.2"><b>2.1</b></a></li>
     906                  <li>407 Proxy Authentication Required (status code)&nbsp;&nbsp;<a href="#rfc.iref.3"><b>2.2</b></a></li>
    888907               </ul>
    889908            </li>
    890             <li class="indline0"><a id="rfc.index.A" href="#rfc.index.A"><b>A</b></a><ul class="ind">
    891                   <li class="indline1">Authorization header&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.authorization.1">2.1</a>, <a class="iref" href="#rfc.iref.a.1"><b>3.1</b></a>, <a class="iref" href="#rfc.xref.header.authorization.2">4.1</a></li>
     909            <li><a id="rfc.index.A" href="#rfc.index.A"><b>A</b></a><ul>
     910                  <li>Authorization header&nbsp;&nbsp;<a href="#rfc.xref.header.authorization.1">2.1</a>, <a href="#rfc.iref.a.1"><b>3.1</b></a>, <a href="#rfc.xref.header.authorization.2">4.1</a></li>
    892911               </ul>
    893912            </li>
    894             <li class="indline0"><a id="rfc.index.G" href="#rfc.index.G"><b>G</b></a><ul class="ind">
    895                   <li class="indline1"><tt>Grammar</tt>&nbsp;&nbsp;
    896                      <ul class="ind">
    897                         <li class="indline1"><tt>Authorization</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>3.1</b></a></li>
    898                         <li class="indline1"><tt>Authorization-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>3.1</b></a></li>
    899                         <li class="indline1"><tt>challenge</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.1"><b>1.2.2</b></a></li>
    900                         <li class="indline1"><tt>credentials</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>1.2.2</b></a></li>
    901                         <li class="indline1"><tt>Proxy-Authenticate</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>3.2</b></a></li>
    902                         <li class="indline1"><tt>Proxy-Authenticate-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>3.2</b></a></li>
    903                         <li class="indline1"><tt>Proxy-Authorization</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>3.3</b></a></li>
    904                         <li class="indline1"><tt>Proxy-Authorization-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>3.3</b></a></li>
    905                         <li class="indline1"><tt>WWW-Authenticate</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>3.4</b></a></li>
    906                         <li class="indline1"><tt>WWW-Authenticate-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>3.4</b></a></li>
     913            <li><a id="rfc.index.G" href="#rfc.index.G"><b>G</b></a><ul>
     914                  <li><tt>Grammar</tt>&nbsp;&nbsp;
     915                     <ul>
     916                        <li><tt>Authorization</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.3"><b>3.1</b></a></li>
     917                        <li><tt>Authorization-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.4"><b>3.1</b></a></li>
     918                        <li><tt>challenge</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.1"><b>1.2.2</b></a></li>
     919                        <li><tt>credentials</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.2"><b>1.2.2</b></a></li>
     920                        <li><tt>Proxy-Authenticate</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.5"><b>3.2</b></a></li>
     921                        <li><tt>Proxy-Authenticate-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.6"><b>3.2</b></a></li>
     922                        <li><tt>Proxy-Authorization</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.7"><b>3.3</b></a></li>
     923                        <li><tt>Proxy-Authorization-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.8"><b>3.3</b></a></li>
     924                        <li><tt>WWW-Authenticate</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.9"><b>3.4</b></a></li>
     925                        <li><tt>WWW-Authenticate-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.10"><b>3.4</b></a></li>
    907926                     </ul>
    908927                  </li>
    909928               </ul>
    910929            </li>
    911             <li class="indline0"><a id="rfc.index.H" href="#rfc.index.H"><b>H</b></a><ul class="ind">
    912                   <li class="indline1">Headers&nbsp;&nbsp;
    913                      <ul class="ind">
    914                         <li class="indline1">Authorization&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.authorization.1">2.1</a>, <a class="iref" href="#rfc.iref.h.1"><b>3.1</b></a>, <a class="iref" href="#rfc.xref.header.authorization.2">4.1</a></li>
    915                         <li class="indline1">Proxy-Authenticate&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.proxy-authenticate.1">2.2</a>, <a class="iref" href="#rfc.iref.h.2"><b>3.2</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authenticate.2">4.1</a></li>
    916                         <li class="indline1">Proxy-Authorization&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.proxy-authorization.1">2.2</a>, <a class="iref" href="#rfc.iref.h.3"><b>3.3</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authorization.2">4.1</a></li>
    917                         <li class="indline1">WWW-Authenticate&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.www-authenticate.1">2.1</a>, <a class="iref" href="#rfc.iref.h.4"><b>3.4</b></a>, <a class="iref" href="#rfc.xref.header.www-authenticate.2">4.1</a></li>
     930            <li><a id="rfc.index.H" href="#rfc.index.H"><b>H</b></a><ul>
     931                  <li>Headers&nbsp;&nbsp;
     932                     <ul>
     933                        <li>Authorization&nbsp;&nbsp;<a href="#rfc.xref.header.authorization.1">2.1</a>, <a href="#rfc.iref.h.1"><b>3.1</b></a>, <a href="#rfc.xref.header.authorization.2">4.1</a></li>
     934                        <li>Proxy-Authenticate&nbsp;&nbsp;<a href="#rfc.xref.header.proxy-authenticate.1">2.2</a>, <a href="#rfc.iref.h.2"><b>3.2</b></a>, <a href="#rfc.xref.header.proxy-authenticate.2">4.1</a></li>
     935                        <li>Proxy-Authorization&nbsp;&nbsp;<a href="#rfc.xref.header.proxy-authorization.1">2.2</a>, <a href="#rfc.iref.h.3"><b>3.3</b></a>, <a href="#rfc.xref.header.proxy-authorization.2">4.1</a></li>
     936                        <li>WWW-Authenticate&nbsp;&nbsp;<a href="#rfc.xref.header.www-authenticate.1">2.1</a>, <a href="#rfc.iref.h.4"><b>3.4</b></a>, <a href="#rfc.xref.header.www-authenticate.2">4.1</a></li>
    918937                     </ul>
    919938                  </li>
    920939               </ul>
    921940            </li>
    922             <li class="indline0"><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul class="ind">
    923                   <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">1.2</a>, <a class="iref" href="#rfc.xref.Part1.2">1.2.1</a>, <a class="iref" href="#rfc.xref.Part1.3">1.2.1</a>, <a class="iref" href="#Part1"><b>7.1</b></a><ul class="ind">
    924                         <li class="indline1"><em>Section 1.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">1.2</a></li>
    925                         <li class="indline1"><em>Section 1.2.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.2">1.2.1</a>, <a class="iref" href="#rfc.xref.Part1.3">1.2.1</a></li>
     941            <li><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul>
     942                  <li><em>Part1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.1">1.2</a>, <a href="#rfc.xref.Part1.2">1.2.1</a>, <a href="#rfc.xref.Part1.3">1.2.1</a>, <a href="#Part1"><b>7.1</b></a><ul>
     943                        <li><em>Section 1.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.1">1.2</a></li>
     944                        <li><em>Section 1.2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.2">1.2.1</a>, <a href="#rfc.xref.Part1.3">1.2.1</a></li>
    926945                     </ul>
    927946                  </li>
    928                   <li class="indline1"><em>Part6</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.1">3.1</a>, <a class="iref" href="#Part6"><b>7.1</b></a><ul class="ind">
    929                         <li class="indline1"><em>Section 1.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part6.1">3.1</a></li>
     947                  <li><em>Part6</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.1">3.1</a>, <a href="#Part6"><b>7.1</b></a><ul>
     948                        <li><em>Section 1.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.1">3.1</a></li>
    930949                     </ul>
    931950                  </li>
    932                   <li class="indline1">Proxy-Authenticate header&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.proxy-authenticate.1">2.2</a>, <a class="iref" href="#rfc.iref.p.1"><b>3.2</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authenticate.2">4.1</a></li>
    933                   <li class="indline1">Proxy-Authorization header&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.proxy-authorization.1">2.2</a>, <a class="iref" href="#rfc.iref.p.2"><b>3.3</b></a>, <a class="iref" href="#rfc.xref.header.proxy-authorization.2">4.1</a></li>
     951                  <li>Proxy-Authenticate header&nbsp;&nbsp;<a href="#rfc.xref.header.proxy-authenticate.1">2.2</a>, <a href="#rfc.iref.p.1"><b>3.2</b></a>, <a href="#rfc.xref.header.proxy-authenticate.2">4.1</a></li>
     952                  <li>Proxy-Authorization header&nbsp;&nbsp;<a href="#rfc.xref.header.proxy-authorization.1">2.2</a>, <a href="#rfc.iref.p.2"><b>3.3</b></a>, <a href="#rfc.xref.header.proxy-authorization.2">4.1</a></li>
    934953               </ul>
    935954            </li>
    936             <li class="indline0"><a id="rfc.index.R" href="#rfc.index.R"><b>R</b></a><ul class="ind">
    937                   <li class="indline1"><em>RFC2119</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2119.1">1.1</a>, <a class="iref" href="#RFC2119"><b>7.1</b></a></li>
    938                   <li class="indline1"><em>RFC2616</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2616.1">1</a>, <a class="iref" href="#RFC2616"><b>7.2</b></a>, <a class="iref" href="#rfc.xref.RFC2616.2">C.1</a></li>
    939                   <li class="indline1"><em>RFC2617</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2617.1">1</a>, <a class="iref" href="#rfc.xref.RFC2617.2">1</a>, <a class="iref" href="#rfc.xref.RFC2617.3">1.2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.4">1.2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.5">2.1</a>, <a class="iref" href="#rfc.xref.RFC2617.6">2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.7">3.1</a>, <a class="iref" href="#rfc.xref.RFC2617.8">3.2</a>, <a class="iref" href="#rfc.xref.RFC2617.9">3.3</a>, <a class="iref" href="#rfc.xref.RFC2617.10">3.4</a>, <a class="iref" href="#RFC2617"><b>7.1</b></a><ul class="ind">
    940                         <li class="indline1"><em>Section 1.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC2617.3">1.2.2</a>, <a class="iref" href="#rfc.xref.RFC2617.4">1.2.2</a></li>
     955            <li><a id="rfc.index.R" href="#rfc.index.R"><b>R</b></a><ul>
     956                  <li><em>RFC2119</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2119.1">1.1</a>, <a href="#RFC2119"><b>7.1</b></a></li>
     957                  <li><em>RFC2616</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2616.1">1</a>, <a href="#RFC2616"><b>7.2</b></a>, <a href="#rfc.xref.RFC2616.2">C.1</a></li>
     958                  <li><em>RFC2617</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2617.1">1</a>, <a href="#rfc.xref.RFC2617.2">1</a>, <a href="#rfc.xref.RFC2617.3">1.2.2</a>, <a href="#rfc.xref.RFC2617.4">1.2.2</a>, <a href="#rfc.xref.RFC2617.5">2.1</a>, <a href="#rfc.xref.RFC2617.6">2.2</a>, <a href="#rfc.xref.RFC2617.7">3.1</a>, <a href="#rfc.xref.RFC2617.8">3.2</a>, <a href="#rfc.xref.RFC2617.9">3.3</a>, <a href="#rfc.xref.RFC2617.10">3.4</a>, <a href="#RFC2617"><b>7.1</b></a><ul>
     959                        <li><em>Section 1.2</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2617.3">1.2.2</a>, <a href="#rfc.xref.RFC2617.4">1.2.2</a></li>
    941960                     </ul>
    942961                  </li>
    943                   <li class="indline1"><em>RFC3864</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC3864.1">4.1</a>, <a class="iref" href="#RFC3864"><b>7.2</b></a></li>
    944                   <li class="indline1"><em>RFC5234</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5234.1">1.2</a>, <a class="iref" href="#rfc.xref.RFC5234.2">1.2</a>, <a class="iref" href="#RFC5234"><b>7.1</b></a><ul class="ind">
    945                         <li class="indline1"><em>Appendix B.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5234.2">1.2</a></li>
     962                  <li><em>RFC3864</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC3864.1">4.1</a>, <a href="#RFC3864"><b>7.2</b></a></li>
     963                  <li><em>RFC5234</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5234.1">1.2</a>, <a href="#rfc.xref.RFC5234.2">1.2</a>, <a href="#RFC5234"><b>7.1</b></a><ul>
     964                        <li><em>Appendix B.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5234.2">1.2</a></li>
    946965                     </ul>
    947966                  </li>
    948967               </ul>
    949968            </li>
    950             <li class="indline0"><a id="rfc.index.S" href="#rfc.index.S"><b>S</b></a><ul class="ind">
    951                   <li class="indline1">Status Codes&nbsp;&nbsp;
    952                      <ul class="ind">
    953                         <li class="indline1">401 Unauthorized&nbsp;&nbsp;<a class="iref" href="#rfc.iref.s.1"><b>2.1</b></a></li>
    954                         <li class="indline1">407 Proxy Authentication Required&nbsp;&nbsp;<a class="iref" href="#rfc.iref.s.2"><b>2.2</b></a></li>
     969            <li><a id="rfc.index.S" href="#rfc.index.S"><b>S</b></a><ul>
     970                  <li>Status Codes&nbsp;&nbsp;
     971                     <ul>
     972                        <li>401 Unauthorized&nbsp;&nbsp;<a href="#rfc.iref.s.1"><b>2.1</b></a></li>
     973                        <li>407 Proxy Authentication Required&nbsp;&nbsp;<a href="#rfc.iref.s.2"><b>2.2</b></a></li>
    955974                     </ul>
    956975                  </li>
    957976               </ul>
    958977            </li>
    959             <li class="indline0"><a id="rfc.index.W" href="#rfc.index.W"><b>W</b></a><ul class="ind">
    960                   <li class="indline1">WWW-Authenticate header&nbsp;&nbsp;<a class="iref" href="#rfc.xref.header.www-authenticate.1">2.1</a>, <a class="iref" href="#rfc.iref.w.1"><b>3.4</b></a>, <a class="iref" href="#rfc.xref.header.www-authenticate.2">4.1</a></li>
     978            <li><a id="rfc.index.W" href="#rfc.index.W"><b>W</b></a><ul>
     979                  <li>WWW-Authenticate header&nbsp;&nbsp;<a href="#rfc.xref.header.www-authenticate.1">2.1</a>, <a href="#rfc.iref.w.1"><b>3.4</b></a>, <a href="#rfc.xref.header.www-authenticate.2">4.1</a></li>
    961980               </ul>
    962981            </li>
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