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37  <table border="0" cellpadding="0" cellspacing="0">
38  <tr bgcolor="orange"><th></th><th>&nbsp;draft-ietf-httpbis-p7-auth-20.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p7-auth-21.txt&nbsp;</th><th></th></tr>
39      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
40      <tr><td class="lineno" valign="top"></td><td class="left">HTTPbis Working Group                                   R. Fielding, Ed.</td><td> </td><td class="right">HTTPbis Working Group                                   R. Fielding, Ed.</td><td class="lineno" valign="top"></td></tr>
41      <tr><td class="lineno" valign="top"></td><td class="left">Internet-Draft                                                     Adobe</td><td> </td><td class="right">Internet-Draft                                                     Adobe</td><td class="lineno" valign="top"></td></tr>
42      <tr><td><a name="diff0001" /></td></tr>
43      <tr><td class="lineno" valign="top"></td><td class="lblock">Obsoletes: 2616 (if approved)                              <span class="delete">Y. Lafon,</span> Ed.</td><td> </td><td class="rblock">Obsoletes: 2616 (if approved)                            <span class="insert">J. Reschke,</span> Ed.</td><td class="lineno" valign="top"></td></tr>
44      <tr><td class="lineno" valign="top"></td><td class="lblock">Updates: 2617 (if approved)                                          <span class="delete">W3C</span></td><td> </td><td class="rblock">Updates: 2617 (if approved)                                   <span class="insert">greenbytes</span></td><td class="lineno" valign="top"></td></tr>
45      <tr><td class="lineno" valign="top"></td><td class="lblock">Intended status: Standards Track                         <span class="delete">J. Reschke, Ed.</span></td><td> </td><td class="rblock">Intended status: Standards Track                         <span class="insert">October 4, 2012</span></td><td class="lineno" valign="top"></td></tr>
46      <tr><td class="lineno" valign="top"></td><td class="lblock">Expires: <span class="delete">January 17,</span> 2013                                     <span class="delete">greenbytes</span></td><td> </td><td class="rblock">Expires: <span class="insert">April 7,</span> 2013</td><td class="lineno" valign="top"></td></tr>
47      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                           July 16, 2012</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
48      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
49      <tr><td><a name="diff0002" /></td></tr>
50      <tr><td class="lineno" valign="top"></td><td class="lblock">                    <span class="delete">HTTP/1.1, part 7:</span> Authentication</td><td> </td><td class="rblock">         <span class="insert">Hypertext Transfer Protocol (HTTP/1.1):</span> Authentication</td><td class="lineno" valign="top"></td></tr>
51      <tr><td class="lineno" valign="top"></td><td class="lblock">                     <span class="delete">draft-ietf-httpbis-p7-auth-20</span></td><td> </td><td class="rblock">                     <span class="insert">draft-ietf-httpbis-p7-auth-21</span></td><td class="lineno" valign="top"></td></tr>
52      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
53      <tr><td class="lineno" valign="top"></td><td class="left">Abstract</td><td> </td><td class="right">Abstract</td><td class="lineno" valign="top"></td></tr>
54      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
55      <tr><td class="lineno" valign="top"></td><td class="left">   The Hypertext Transfer Protocol (HTTP) is an application-level</td><td> </td><td class="right">   The Hypertext Transfer Protocol (HTTP) is an application-level</td><td class="lineno" valign="top"></td></tr>
56      <tr><td class="lineno" valign="top"></td><td class="left">   protocol for distributed, collaborative, hypermedia information</td><td> </td><td class="right">   protocol for distributed, collaborative, hypermedia information</td><td class="lineno" valign="top"></td></tr>
57      <tr><td class="lineno" valign="top"></td><td class="left">   systems.  This document defines the HTTP Authentication framework.</td><td> </td><td class="right">   systems.  This document defines the HTTP Authentication framework.</td><td class="lineno" valign="top"></td></tr>
58      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
59      <tr><td class="lineno" valign="top"></td><td class="left">Editorial Note (To be removed by RFC Editor)</td><td> </td><td class="right">Editorial Note (To be removed by RFC Editor)</td><td class="lineno" valign="top"></td></tr>
60      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
61      <tr><td class="lineno" valign="top"></td><td class="left">   Discussion of this draft takes place on the HTTPBIS working group</td><td> </td><td class="right">   Discussion of this draft takes place on the HTTPBIS working group</td><td class="lineno" valign="top"></td></tr>
62      <tr><td class="lineno" valign="top"></td><td class="left">   mailing list (ietf-http-wg@w3.org), which is archived at</td><td> </td><td class="right">   mailing list (ietf-http-wg@w3.org), which is archived at</td><td class="lineno" valign="top"></td></tr>
63      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://lists.w3.org/Archives/Public/ietf-http-wg/&gt;.</td><td> </td><td class="right">   &lt;http://lists.w3.org/Archives/Public/ietf-http-wg/&gt;.</td><td class="lineno" valign="top"></td></tr>
64      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
65      <tr><td class="lineno" valign="top"></td><td class="left">   The current issues list is at</td><td> </td><td class="right">   The current issues list is at</td><td class="lineno" valign="top"></td></tr>
66      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://tools.ietf.org/wg/httpbis/trac/report/3&gt; and related</td><td> </td><td class="right">   &lt;http://tools.ietf.org/wg/httpbis/trac/report/3&gt; and related</td><td class="lineno" valign="top"></td></tr>
67      <tr><td class="lineno" valign="top"></td><td class="left">   documents (including fancy diffs) can be found at</td><td> </td><td class="right">   documents (including fancy diffs) can be found at</td><td class="lineno" valign="top"></td></tr>
68      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</td><td> </td><td class="right">   &lt;http://tools.ietf.org/wg/httpbis/&gt;.</td><td class="lineno" valign="top"></td></tr>
69      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
70      <tr><td><a name="diff0003" /></td></tr>
71      <tr><td class="lineno" valign="top"></td><td class="lblock">   The changes in this draft are summarized in Appendix D.<span class="delete">1</span>.</td><td> </td><td class="rblock">   The changes in this draft are summarized in Appendix D.<span class="insert">2</span>.</td><td class="lineno" valign="top"></td></tr>
72      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
73      <tr><td class="lineno" valign="top"></td><td class="left">Status of This Memo</td><td> </td><td class="right">Status of This Memo</td><td class="lineno" valign="top"></td></tr>
74      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
75      <tr><td class="lineno" valign="top"></td><td class="left">   This Internet-Draft is submitted in full conformance with the</td><td> </td><td class="right">   This Internet-Draft is submitted in full conformance with the</td><td class="lineno" valign="top"></td></tr>
76      <tr><td class="lineno" valign="top"></td><td class="left">   provisions of BCP 78 and BCP 79.</td><td> </td><td class="right">   provisions of BCP 78 and BCP 79.</td><td class="lineno" valign="top"></td></tr>
77      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
78      <tr><td class="lineno" valign="top"></td><td class="left">   Internet-Drafts are working documents of the Internet Engineering</td><td> </td><td class="right">   Internet-Drafts are working documents of the Internet Engineering</td><td class="lineno" valign="top"></td></tr>
79      <tr><td class="lineno" valign="top"></td><td class="left">   Task Force (IETF).  Note that other groups may also distribute</td><td> </td><td class="right">   Task Force (IETF).  Note that other groups may also distribute</td><td class="lineno" valign="top"></td></tr>
80      <tr><td class="lineno" valign="top"></td><td class="left">   working documents as Internet-Drafts.  The list of current Internet-</td><td> </td><td class="right">   working documents as Internet-Drafts.  The list of current Internet-</td><td class="lineno" valign="top"></td></tr>
81      <tr><td class="lineno" valign="top"></td><td class="left">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td> </td><td class="right">   Drafts is at http://datatracker.ietf.org/drafts/current/.</td><td class="lineno" valign="top"></td></tr>
82      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
83      <tr><td class="lineno" valign="top"></td><td class="left">   Internet-Drafts are draft documents valid for a maximum of six months</td><td> </td><td class="right">   Internet-Drafts are draft documents valid for a maximum of six months</td><td class="lineno" valign="top"></td></tr>
84      <tr><td class="lineno" valign="top"></td><td class="left">   and may be updated, replaced, or obsoleted by other documents at any</td><td> </td><td class="right">   and may be updated, replaced, or obsoleted by other documents at any</td><td class="lineno" valign="top"></td></tr>
85      <tr><td class="lineno" valign="top"></td><td class="left">   time.  It is inappropriate to use Internet-Drafts as reference</td><td> </td><td class="right">   time.  It is inappropriate to use Internet-Drafts as reference</td><td class="lineno" valign="top"></td></tr>
86      <tr><td class="lineno" valign="top"></td><td class="left">   material or to cite them other than as "work in progress."</td><td> </td><td class="right">   material or to cite them other than as "work in progress."</td><td class="lineno" valign="top"></td></tr>
87      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
88      <tr><td><a name="diff0004" /></td></tr>
89      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on <span class="delete">January 1</span>7, 2013.</td><td> </td><td class="rblock">   This Internet-Draft will expire on <span class="insert">April </span>7, 2013.</td><td class="lineno" valign="top"></td></tr>
90      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
91      <tr><td class="lineno" valign="top"></td><td class="left">Copyright Notice</td><td> </td><td class="right">Copyright Notice</td><td class="lineno" valign="top"></td></tr>
92      <tr><td><a name="diff0005" /></td></tr>
93      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">                                                                         </span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
94      <tr><td class="lineno" valign="top"></td><td class="left">   Copyright (c) 2012 IETF Trust and the persons identified as the</td><td> </td><td class="right">   Copyright (c) 2012 IETF Trust and the persons identified as the</td><td class="lineno" valign="top"></td></tr>
95      <tr><td class="lineno" valign="top"></td><td class="left">   document authors.  All rights reserved.</td><td> </td><td class="right">   document authors.  All rights reserved.</td><td class="lineno" valign="top"></td></tr>
96      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
97      <tr><td class="lineno" valign="top"></td><td class="left">   This document is subject to BCP 78 and the IETF Trust's Legal</td><td> </td><td class="right">   This document is subject to BCP 78 and the IETF Trust's Legal</td><td class="lineno" valign="top"></td></tr>
98      <tr><td class="lineno" valign="top"></td><td class="left">   Provisions Relating to IETF Documents</td><td> </td><td class="right">   Provisions Relating to IETF Documents</td><td class="lineno" valign="top"></td></tr>
99      <tr><td class="lineno" valign="top"></td><td class="left">   (http://trustee.ietf.org/license-info) in effect on the date of</td><td> </td><td class="right">   (http://trustee.ietf.org/license-info) in effect on the date of</td><td class="lineno" valign="top"></td></tr>
100      <tr><td class="lineno" valign="top"></td><td class="left">   publication of this document.  Please review these documents</td><td> </td><td class="right">   publication of this document.  Please review these documents</td><td class="lineno" valign="top"></td></tr>
101      <tr><td class="lineno" valign="top"></td><td class="left">   carefully, as they describe your rights and restrictions with respect</td><td> </td><td class="right">   carefully, as they describe your rights and restrictions with respect</td><td class="lineno" valign="top"></td></tr>
102      <tr><td class="lineno" valign="top"></td><td class="left">   to this document.  Code Components extracted from this document must</td><td> </td><td class="right">   to this document.  Code Components extracted from this document must</td><td class="lineno" valign="top"></td></tr>
103      <tr><td class="lineno" valign="top"></td><td class="left">   include Simplified BSD License text as described in Section 4.e of</td><td> </td><td class="right">   include Simplified BSD License text as described in Section 4.e of</td><td class="lineno" valign="top"></td></tr>
104      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
105      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 3, line 9</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 3, line 9</em></th><td></td></tr>
106      <tr><td class="lineno" valign="top"></td><td class="left">   the copyright in such materials, this document may not be modified</td><td> </td><td class="right">   the copyright in such materials, this document may not be modified</td><td class="lineno" valign="top"></td></tr>
107      <tr><td class="lineno" valign="top"></td><td class="left">   outside the IETF Standards Process, and derivative works of it may</td><td> </td><td class="right">   outside the IETF Standards Process, and derivative works of it may</td><td class="lineno" valign="top"></td></tr>
108      <tr><td class="lineno" valign="top"></td><td class="left">   not be created outside the IETF Standards Process, except to format</td><td> </td><td class="right">   not be created outside the IETF Standards Process, except to format</td><td class="lineno" valign="top"></td></tr>
109      <tr><td class="lineno" valign="top"></td><td class="left">   it for publication as an RFC or to translate it into languages other</td><td> </td><td class="right">   it for publication as an RFC or to translate it into languages other</td><td class="lineno" valign="top"></td></tr>
110      <tr><td class="lineno" valign="top"></td><td class="left">   than English.</td><td> </td><td class="right">   than English.</td><td class="lineno" valign="top"></td></tr>
111      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
112      <tr><td class="lineno" valign="top"></td><td class="left">Table of Contents</td><td> </td><td class="right">Table of Contents</td><td class="lineno" valign="top"></td></tr>
113      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
114      <tr><td class="lineno" valign="top"></td><td class="left">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4</td><td> </td><td class="right">   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
115      <tr><td class="lineno" valign="top"></td><td class="left">     1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4</td><td> </td><td class="right">     1.1.  Conformance and Error Handling . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
116      <tr><td><a name="diff0006" /></td></tr>
117      <tr><td class="lineno" valign="top"></td><td class="lblock">     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  <span class="delete">5</span></td><td> </td><td class="rblock">     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
118      <tr><td class="lineno" valign="top"></td><td class="lblock">   2.  Access Authentication Framework  . . . . . . . . . . . . . . .  <span class="delete">5</span></td><td> </td><td class="rblock">   2.  Access Authentication Framework  . . . . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
119      <tr><td class="lineno" valign="top"></td><td class="lblock">     2.1.  Challenge and Response . . . . . . . . . . . . . . . . . .  <span class="delete">5</span></td><td> </td><td class="rblock">     2.1.  Challenge and Response . . . . . . . . . . . . . . . . . .  <span class="insert">4</span></td><td class="lineno" valign="top"></td></tr>
120      <tr><td class="lineno" valign="top"></td><td class="lblock">     2.2.  Protection Space (Realm) . . . . . . . . . . . . . . . . .  <span class="delete">7</span></td><td> </td><td class="rblock">     2.2.  Protection Space (Realm) . . . . . . . . . . . . . . . . .  <span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
121      <tr><td class="lineno" valign="top"></td><td class="lblock">     2.3.  Authentication Scheme Registry . . . . . . . . . . . . . .  <span class="delete">8</span></td><td> </td><td class="rblock">     2.3.  Authentication Scheme Registry . . . . . . . . . . . . . .  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
122      <tr><td class="lineno" valign="top"></td><td class="lblock">       2.3.1.  Considerations for New Authentication Schemes  . . . .  <span class="delete">8</span></td><td> </td><td class="rblock">       2.3.1.  Considerations for New Authentication Schemes  . . . .  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
123      <tr><td class="lineno" valign="top"></td><td class="left">   3.  Status Code Definitions  . . . . . . . . . . . . . . . . . . .  9</td><td> </td><td class="right">   3.  Status Code Definitions  . . . . . . . . . . . . . . . . . . .  9</td><td class="lineno" valign="top"></td></tr>
124      <tr><td class="lineno" valign="top"></td><td class="left">     3.1.  401 Unauthorized . . . . . . . . . . . . . . . . . . . . .  9</td><td> </td><td class="right">     3.1.  401 Unauthorized . . . . . . . . . . . . . . . . . . . . .  9</td><td class="lineno" valign="top"></td></tr>
125      <tr><td><a name="diff0007" /></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="lblock">     3.2.  407 Proxy Authentication Required  . . . . . . . . . . . . <span class="delete">10</span></td><td> </td><td class="rblock">     3.2.  407 Proxy Authentication Required  . . . . . . . . . . . .  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="lblock">   4.  Header Field Definitions . . . . . . . . . . . . . . . . . . . <span class="delete">10</span></td><td> </td><td class="rblock">   4.  Header Field Definitions . . . . . . . . . . . . . . . . . . .  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="lblock">     4.1.  Authorization  . . . . . . . . . . . . . . . . . . . . . . <span class="delete">10</span></td><td> </td><td class="rblock">     4.1.  Authorization  . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
129      <tr><td class="lineno" valign="top"></td><td class="lblock">     4.2.  Proxy-Authenticate . . . . . . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">     4.2.  Proxy-Authenticate . . . . . . . . . . . . . . . . . . . . <span class="insert">10</span></td><td class="lineno" valign="top"></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="lblock">     4.3.  Proxy-Authorization  . . . . . . . . . . . . . . . . . . . <span class="delete">11</span></td><td> </td><td class="rblock">     4.3.  Proxy-Authorization  . . . . . . . . . . . . . . . . . . . <span class="insert">10</span></td><td class="lineno" valign="top"></td></tr>
131      <tr><td class="lineno" valign="top"></td><td class="lblock">     4.4.  WWW-Authenticate . . . . . . . . . . . . . . . . . . . . . <span class="delete">12</span></td><td> </td><td class="rblock">     4.4.  WWW-Authenticate . . . . . . . . . . . . . . . . . . . . . <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
132      <tr><td class="lineno" valign="top"></td><td class="left">   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 12</td><td> </td><td class="right">   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
133      <tr><td class="lineno" valign="top"></td><td class="left">     5.1.  Authentication Scheme Registry . . . . . . . . . . . . . . 12</td><td> </td><td class="right">     5.1.  Authentication Scheme Registry . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
134      <tr><td><a name="diff0008" /></td></tr>
135      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.2.  Status Code Registration . . . . . . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock">     5.2.  Status Code Registration . . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
136      <tr><td class="lineno" valign="top"></td><td class="lblock">     5.3.  Header Field Registration  . . . . . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock">     5.3.  Header Field Registration  . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="lblock">   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="delete">13</span></td><td> </td><td class="rblock">   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . <span class="insert">12</span></td><td class="lineno" valign="top"></td></tr>
138      <tr><td class="lineno" valign="top"></td><td class="left">     6.1.  Authentication Credentials and Idle Clients  . . . . . . . 13</td><td> </td><td class="right">     6.1.  Authentication Credentials and Idle Clients  . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
139      <tr><td><a name="diff0009" /></td></tr>
140      <tr><td class="lineno" valign="top"></td><td class="lblock">     6.2.  Protection Spaces  . . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock">     6.2.  Protection Spaces  . . . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno" valign="top"></td></tr>
141      <tr><td class="lineno" valign="top"></td><td class="lblock">   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">14</span></td><td> </td><td class="rblock">   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">13</span></td><td class="lineno" valign="top"></td></tr>
142      <tr><td class="lineno" valign="top"></td><td class="lblock">   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock">   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
143      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.1.  Normative References . . . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock">     8.1.  Normative References . . . . . . . . . . . . . . . . . . . <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
144      <tr><td class="lineno" valign="top"></td><td class="lblock">     8.2.  Informative References . . . . . . . . . . . . . . . . . . <span class="delete">15</span></td><td> </td><td class="rblock">     8.2.  Informative References . . . . . . . . . . . . . . . . . . <span class="insert">14</span></td><td class="lineno" valign="top"></td></tr>
145      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix A.  Changes from RFCs 2616 and 2617 . . . . . . . . . . . <span class="delete">16</span></td><td> </td><td class="rblock">   Appendix A.  Changes from RFCs 2616 and 2617 . . . . . . . . . . . <span class="insert">15</span></td><td class="lineno" valign="top"></td></tr>
146      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . <span class="delete">16</span></td><td> </td><td class="rblock">   Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . <span class="insert">15</span></td><td class="lineno" valign="top"></td></tr>
147      <tr><td class="lineno" valign="top"></td><td class="lblock">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . <span class="delete">17</span></td><td> </td><td class="rblock">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . <span class="insert">16</span></td><td class="lineno" valign="top"></td></tr>
148      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix D.  Change Log (to be removed by RFC Editor before</td><td> </td><td class="right">   Appendix D.  Change Log (to be removed by RFC Editor before</td><td class="lineno" valign="top"></td></tr>
149      <tr><td><a name="diff0010" /></td></tr>
150      <tr><td class="lineno" valign="top"></td><td class="lblock">                publication)  . . . . . . . . . . . . . . . . . . . . <span class="delete">17</span></td><td> </td><td class="rblock">                publication)  . . . . . . . . . . . . . . . . . . . . <span class="insert">16</span></td><td class="lineno" valign="top"></td></tr>
151      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.1.  Since draft-ietf-httpbis-p7-auth-19  . . . . . . . . . . . 17</td><td> </td><td class="rblock">     D.1.  Since draft-ietf-httpbis-p7-auth-19  . . . . . . . . . . . <span class="insert">16</span></td><td class="lineno" valign="top"></td></tr>
152      <tr><td class="lineno" valign="top"></td><td class="lblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">18</span></td><td> </td><td class="rblock"><span class="insert">     D.2.  Since draft-ietf-httpbis-p7-auth-20  . . . . . . . . . . .</span> 17</td><td class="lineno" valign="top"></td></tr>
153      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
154      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
155      <tr><td class="lineno" valign="top"></td><td class="left">1.  Introduction</td><td> </td><td class="right">1.  Introduction</td><td class="lineno" valign="top"></td></tr>
156      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
157      <tr><td class="lineno" valign="top"></td><td class="left">   This document defines HTTP/1.1 access control and authentication.  It</td><td> </td><td class="right">   This document defines HTTP/1.1 access control and authentication.  It</td><td class="lineno" valign="top"></td></tr>
158      <tr><td class="lineno" valign="top"></td><td class="left">   includes the relevant parts of RFC 2616 with only minor changes</td><td> </td><td class="right">   includes the relevant parts of RFC 2616 with only minor changes</td><td class="lineno" valign="top"></td></tr>
159      <tr><td class="lineno" valign="top"></td><td class="left">   ([RFC2616]), plus the general framework for HTTP authentication, as</td><td> </td><td class="right">   ([RFC2616]), plus the general framework for HTTP authentication, as</td><td class="lineno" valign="top"></td></tr>
160      <tr><td class="lineno" valign="top"></td><td class="left">   previously defined in "HTTP Authentication: Basic and Digest Access</td><td> </td><td class="right">   previously defined in "HTTP Authentication: Basic and Digest Access</td><td class="lineno" valign="top"></td></tr>
161      <tr><td class="lineno" valign="top"></td><td class="left">   Authentication" ([RFC2617]).</td><td> </td><td class="right">   Authentication" ([RFC2617]).</td><td class="lineno" valign="top"></td></tr>
162      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="left">   HTTP provides several OPTIONAL challenge-response authentication</td><td> </td><td class="right">   HTTP provides several OPTIONAL challenge-response authentication</td><td class="lineno" valign="top"></td></tr>
164      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
165      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 4, line 25</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 4, line 25</em></th><td></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="left">   request and by a client to provide authentication information.  The</td><td> </td><td class="right">   request and by a client to provide authentication information.  The</td><td class="lineno" valign="top"></td></tr>
167      <tr><td class="lineno" valign="top"></td><td class="left">   "basic" and "digest" authentication schemes continue to be specified</td><td> </td><td class="right">   "basic" and "digest" authentication schemes continue to be specified</td><td class="lineno" valign="top"></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="left">   in RFC 2617.</td><td> </td><td class="right">   in RFC 2617.</td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno" valign="top"></td><td class="left">1.1.  Conformance and Error Handling</td><td> </td><td class="right">1.1.  Conformance and Error Handling</td><td class="lineno" valign="top"></td></tr>
171      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
172      <tr><td class="lineno" valign="top"></td><td class="left">   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</td><td> </td><td class="right">   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",</td><td class="lineno" valign="top"></td></tr>
173      <tr><td class="lineno" valign="top"></td><td class="left">   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</td><td> </td><td class="right">   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this</td><td class="lineno" valign="top"></td></tr>
174      <tr><td class="lineno" valign="top"></td><td class="left">   document are to be interpreted as described in [RFC2119].</td><td> </td><td class="right">   document are to be interpreted as described in [RFC2119].</td><td class="lineno" valign="top"></td></tr>
175      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
176      <tr><td><a name="diff0011" /></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">This specification targets conformance</span> criteria <span class="delete">according to the role</span></td><td> </td><td class="rblock">   <span class="insert">Conformance</span> criteria and <span class="insert">considerations regarding</span> error handling <span class="insert">are</span></td><td class="lineno" valign="top"></td></tr>
178      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   of a participant in HTTP communication.  Hence, HTTP requirements are</span></td><td> </td><td class="rblock"><span class="insert">   defined in Section 2.5</span> of <span class="insert">[Part1].</span></td><td class="lineno" valign="top"></td></tr>
179      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   placed on senders, recipients, clients, servers, user agents,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
180      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   intermediaries, origin servers, proxies, gateways, or caches,</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
181      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   depending on what behavior is being constrained by the requirement.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
182      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   See Section 2 of [Part1] for definitions of these terms.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
183      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
184      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   The verb "generate" is used instead of "send" where a requirement</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
185      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   differentiates between creating a protocol element</span> and <span class="delete">merely</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
186      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   forwarding a received element downstream.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
187      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
188      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   An implementation is considered conformant if it complies with all of</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
189      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the requirements associated with the roles it partakes in HTTP.  Note</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
190      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that SHOULD-level requirements are relevant here, unless one of the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
191      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   documented exceptions is applicable.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
192      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
193      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   This document also uses ABNF to define valid protocol elements</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
194      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   (Section 1.2).  In addition to the prose requirements placed upon</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
195      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   them, senders MUST NOT generate protocol elements that do not match</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
196      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   the grammar defined by the ABNF rules for those protocol elements</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that are applicable to the sender's role.  If a received protocol</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
198      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   element is processed, the recipient MUST be able to parse any value</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
199      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   that would match the ABNF rules for that protocol element, excluding</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
200      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   only those rules not applicable to the recipient's role.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Unless noted otherwise, a recipient MAY attempt to recover a usable</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
203      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   protocol element from an invalid construct.  HTTP does not define</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
204      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   specific error handling mechanisms except when they have a direct</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   impact on security, since different applications of the protocol</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
206      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   require different</span> error handling <span class="delete">strategies.  For example, a Web</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
207      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   browser might wish to transparently recover from a response where the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
208      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Location header field doesn't parse according to the ABNF, whereas a</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
209      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   systems control client might consider any form</span> of <span class="delete">error recovery to</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
210      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   be dangerous.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
211      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
212      <tr><td class="lineno" valign="top"></td><td class="left">1.2.  Syntax Notation</td><td> </td><td class="right">1.2.  Syntax Notation</td><td class="lineno" valign="top"></td></tr>
213      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
214      <tr><td class="lineno" valign="top"></td><td class="left">   This specification uses the Augmented Backus-Naur Form (ABNF)</td><td> </td><td class="right">   This specification uses the Augmented Backus-Naur Form (ABNF)</td><td class="lineno" valign="top"></td></tr>
215      <tr><td class="lineno" valign="top"></td><td class="left">   notation of [RFC5234] with the list rule extension defined in Section</td><td> </td><td class="right">   notation of [RFC5234] with the list rule extension defined in Section</td><td class="lineno" valign="top"></td></tr>
216      <tr><td class="lineno" valign="top"></td><td class="left">   1.2 of [Part1].  Appendix B describes rules imported from other</td><td> </td><td class="right">   1.2 of [Part1].  Appendix B describes rules imported from other</td><td class="lineno" valign="top"></td></tr>
217      <tr><td class="lineno" valign="top"></td><td class="left">   documents.  Appendix C shows the collected ABNF with the list rule</td><td> </td><td class="right">   documents.  Appendix C shows the collected ABNF with the list rule</td><td class="lineno" valign="top"></td></tr>
218      <tr><td class="lineno" valign="top"></td><td class="left">   expanded.</td><td> </td><td class="right">   expanded.</td><td class="lineno" valign="top"></td></tr>
219      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
220      <tr><td class="lineno" valign="top"></td><td class="left">2.  Access Authentication Framework</td><td> </td><td class="right">2.  Access Authentication Framework</td><td class="lineno" valign="top"></td></tr>
221      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
222      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 5, line 40</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 5, line 9</em></th><td></td></tr>
223      <tr><td class="lineno" valign="top"></td><td class="left">   capable of holding base64-encoded information.</td><td> </td><td class="right">   capable of holding base64-encoded information.</td><td class="lineno" valign="top"></td></tr>
224      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
225      <tr><td class="lineno" valign="top"></td><td class="left">   Parameters are name-value pairs where the name is matched case-</td><td> </td><td class="right">   Parameters are name-value pairs where the name is matched case-</td><td class="lineno" valign="top"></td></tr>
226      <tr><td class="lineno" valign="top"></td><td class="left">   insensitively, and each parameter name MUST only occur once per</td><td> </td><td class="right">   insensitively, and each parameter name MUST only occur once per</td><td class="lineno" valign="top"></td></tr>
227      <tr><td class="lineno" valign="top"></td><td class="left">   challenge.</td><td> </td><td class="right">   challenge.</td><td class="lineno" valign="top"></td></tr>
228      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
229      <tr><td class="lineno" valign="top"></td><td class="left">     auth-scheme    = token</td><td> </td><td class="right">     auth-scheme    = token</td><td class="lineno" valign="top"></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno" valign="top"></td><td class="left">     auth-param     = token BWS "=" BWS ( token / quoted-string )</td><td> </td><td class="right">     auth-param     = token BWS "=" BWS ( token / quoted-string )</td><td class="lineno" valign="top"></td></tr>
232      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
233      <tr><td><a name="diff0012" /></td></tr>
234      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">b64token</span>       = 1*( ALPHA / DIGIT /</td><td> </td><td class="rblock">     <span class="insert">token68 </span>       = 1*( ALPHA / DIGIT /</td><td class="lineno" valign="top"></td></tr>
235      <tr><td class="lineno" valign="top"></td><td class="left">                          "-" / "." / "_" / "~" / "+" / "/" ) *"="</td><td> </td><td class="right">                          "-" / "." / "_" / "~" / "+" / "/" ) *"="</td><td class="lineno" valign="top"></td></tr>
236      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
237      <tr><td><a name="diff0013" /></td></tr>
238      <tr><td class="lineno" valign="top"></td><td class="lblock">   The "<span class="delete">b64token</span>" syntax allows the 66 unreserved URI characters</td><td> </td><td class="rblock">   The "<span class="insert">token68</span>" syntax allows the 66 unreserved URI characters</td><td class="lineno" valign="top"></td></tr>
239      <tr><td class="lineno" valign="top"></td><td class="left">   ([RFC3986]), plus a few others, so that it can hold a base64,</td><td> </td><td class="right">   ([RFC3986]), plus a few others, so that it can hold a base64,</td><td class="lineno" valign="top"></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="left">   base64url (URL and filename safe alphabet), base32, or base16 (hex)</td><td> </td><td class="right">   base64url (URL and filename safe alphabet), base32, or base16 (hex)</td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="left">   encoding, with or without padding, but excluding whitespace</td><td> </td><td class="right">   encoding, with or without padding, but excluding whitespace</td><td class="lineno" valign="top"></td></tr>
242      <tr><td class="lineno" valign="top"></td><td class="left">   ([RFC4648]).</td><td> </td><td class="right">   ([RFC4648]).</td><td class="lineno" valign="top"></td></tr>
243      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
244      <tr><td class="lineno" valign="top"></td><td class="left">   The 401 (Unauthorized) response message is used by an origin server</td><td> </td><td class="right">   The 401 (Unauthorized) response message is used by an origin server</td><td class="lineno" valign="top"></td></tr>
245      <tr><td class="lineno" valign="top"></td><td class="left">   to challenge the authorization of a user agent.  This response MUST</td><td> </td><td class="right">   to challenge the authorization of a user agent.  This response MUST</td><td class="lineno" valign="top"></td></tr>
246      <tr><td class="lineno" valign="top"></td><td class="left">   include a WWW-Authenticate header field containing at least one</td><td> </td><td class="right">   include a WWW-Authenticate header field containing at least one</td><td class="lineno" valign="top"></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="left">   challenge applicable to the requested resource.</td><td> </td><td class="right">   challenge applicable to the requested resource.</td><td class="lineno" valign="top"></td></tr>
248      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
249      <tr><td class="lineno" valign="top"></td><td class="left">   The 407 (Proxy Authentication Required) response message is used by a</td><td> </td><td class="right">   The 407 (Proxy Authentication Required) response message is used by a</td><td class="lineno" valign="top"></td></tr>
250      <tr><td class="lineno" valign="top"></td><td class="left">   proxy to challenge the authorization of a client and MUST include a</td><td> </td><td class="right">   proxy to challenge the authorization of a client and MUST include a</td><td class="lineno" valign="top"></td></tr>
251      <tr><td class="lineno" valign="top"></td><td class="left">   Proxy-Authenticate header field containing at least one challenge</td><td> </td><td class="right">   Proxy-Authenticate header field containing at least one challenge</td><td class="lineno" valign="top"></td></tr>
252      <tr><td class="lineno" valign="top"></td><td class="left">   applicable to the proxy for the requested resource.</td><td> </td><td class="right">   applicable to the proxy for the requested resource.</td><td class="lineno" valign="top"></td></tr>
253      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
254      <tr><td><a name="diff0014" /></td></tr>
255      <tr><td class="lineno" valign="top"></td><td class="lblock">     challenge   = auth-scheme [ 1*SP ( <span class="delete">b64token</span> / #auth-param ) ]</td><td> </td><td class="rblock">     challenge   = auth-scheme [ 1*SP ( <span class="insert">token68</span> / #auth-param ) ]</td><td class="lineno" valign="top"></td></tr>
256      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
257      <tr><td class="lineno" valign="top"></td><td class="left">      Note: User agents will need to take special care in parsing the</td><td> </td><td class="right">      Note: User agents will need to take special care in parsing the</td><td class="lineno" valign="top"></td></tr>
258      <tr><td class="lineno" valign="top"></td><td class="left">      WWW-Authenticate and Proxy-Authenticate header field values</td><td> </td><td class="right">      WWW-Authenticate and Proxy-Authenticate header field values</td><td class="lineno" valign="top"></td></tr>
259      <tr><td class="lineno" valign="top"></td><td class="left">      because they can contain more than one challenge, or if more than</td><td> </td><td class="right">      because they can contain more than one challenge, or if more than</td><td class="lineno" valign="top"></td></tr>
260      <tr><td class="lineno" valign="top"></td><td class="left">      one of each is provided, since the contents of a challenge can</td><td> </td><td class="right">      one of each is provided, since the contents of a challenge can</td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="left">      itself contain a comma-separated list of authentication</td><td> </td><td class="right">      itself contain a comma-separated list of authentication</td><td class="lineno" valign="top"></td></tr>
262      <tr><td class="lineno" valign="top"></td><td class="left">      parameters.</td><td> </td><td class="right">      parameters.</td><td class="lineno" valign="top"></td></tr>
263      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
264      <tr><td class="lineno" valign="top"></td><td class="left">      Note: Many clients fail to parse challenges containing unknown</td><td> </td><td class="right">      Note: Many clients fail to parse challenges containing unknown</td><td class="lineno" valign="top"></td></tr>
265      <tr><td class="lineno" valign="top"></td><td class="left">      schemes.  A workaround for this problem is to list well-supported</td><td> </td><td class="right">      schemes.  A workaround for this problem is to list well-supported</td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
267      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 6, line 42</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 6, line 10</em></th><td></td></tr>
268      <tr><td class="lineno" valign="top"></td><td class="left">   field with the request.</td><td> </td><td class="right">   field with the request.</td><td class="lineno" valign="top"></td></tr>
269      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
270      <tr><td class="lineno" valign="top"></td><td class="left">   Both the Authorization field value and the Proxy-Authorization field</td><td> </td><td class="right">   Both the Authorization field value and the Proxy-Authorization field</td><td class="lineno" valign="top"></td></tr>
271      <tr><td class="lineno" valign="top"></td><td class="left">   value contain the client's credentials for the realm of the resource</td><td> </td><td class="right">   value contain the client's credentials for the realm of the resource</td><td class="lineno" valign="top"></td></tr>
272      <tr><td class="lineno" valign="top"></td><td class="left">   being requested, based upon a challenge received from the server</td><td> </td><td class="right">   being requested, based upon a challenge received from the server</td><td class="lineno" valign="top"></td></tr>
273      <tr><td class="lineno" valign="top"></td><td class="left">   (possibly at some point in the past).  When creating their values,</td><td> </td><td class="right">   (possibly at some point in the past).  When creating their values,</td><td class="lineno" valign="top"></td></tr>
274      <tr><td class="lineno" valign="top"></td><td class="left">   the user agent ought to do so by selecting the challenge with what it</td><td> </td><td class="right">   the user agent ought to do so by selecting the challenge with what it</td><td class="lineno" valign="top"></td></tr>
275      <tr><td class="lineno" valign="top"></td><td class="left">   considers to be the most secure auth-scheme that it understands,</td><td> </td><td class="right">   considers to be the most secure auth-scheme that it understands,</td><td class="lineno" valign="top"></td></tr>
276      <tr><td class="lineno" valign="top"></td><td class="left">   obtaining credentials from the user as appropriate.</td><td> </td><td class="right">   obtaining credentials from the user as appropriate.</td><td class="lineno" valign="top"></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
278      <tr><td><a name="diff0015" /></td></tr>
279      <tr><td class="lineno" valign="top"></td><td class="lblock">     credentials = auth-scheme [ 1*SP ( <span class="delete">b64token</span> / #auth-param ) ]</td><td> </td><td class="rblock">     credentials = auth-scheme [ 1*SP ( <span class="insert">token68</span> / #auth-param ) ]</td><td class="lineno" valign="top"></td></tr>
280      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="left">   Upon a request for a protected resource that omits credentials,</td><td> </td><td class="right">   Upon a request for a protected resource that omits credentials,</td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno" valign="top"></td><td class="left">   contains invalid credentials (e.g., a bad password) or partial</td><td> </td><td class="right">   contains invalid credentials (e.g., a bad password) or partial</td><td class="lineno" valign="top"></td></tr>
283      <tr><td class="lineno" valign="top"></td><td class="left">   credentials (e.g., when the authentication scheme requires more than</td><td> </td><td class="right">   credentials (e.g., when the authentication scheme requires more than</td><td class="lineno" valign="top"></td></tr>
284      <tr><td class="lineno" valign="top"></td><td class="left">   one round trip), an origin server SHOULD return a 401 (Unauthorized)</td><td> </td><td class="right">   one round trip), an origin server SHOULD return a 401 (Unauthorized)</td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="left">   response.  Such responses MUST include a WWW-Authenticate header</td><td> </td><td class="right">   response.  Such responses MUST include a WWW-Authenticate header</td><td class="lineno" valign="top"></td></tr>
286      <tr><td class="lineno" valign="top"></td><td class="left">   field containing at least one (possibly new) challenge applicable to</td><td> </td><td class="right">   field containing at least one (possibly new) challenge applicable to</td><td class="lineno" valign="top"></td></tr>
287      <tr><td class="lineno" valign="top"></td><td class="left">   the requested resource.</td><td> </td><td class="right">   the requested resource.</td><td class="lineno" valign="top"></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
289      <tr><td class="lineno" valign="top"></td><td class="left">   Likewise, upon a request that requires authentication by proxies that</td><td> </td><td class="right">   Likewise, upon a request that requires authentication by proxies that</td><td class="lineno" valign="top"></td></tr>
290      <tr><td class="lineno" valign="top"></td><td class="left">   omit credentials or contain invalid or partial credentials, a proxy</td><td> </td><td class="right">   omit credentials or contain invalid or partial credentials, a proxy</td><td class="lineno" valign="top"></td></tr>
291      <tr><td class="lineno" valign="top"></td><td class="left">   SHOULD return a 407 (Proxy Authentication Required) response.  Such</td><td> </td><td class="right">   SHOULD return a 407 (Proxy Authentication Required) response.  Such</td><td class="lineno" valign="top"></td></tr>
292      <tr><td class="lineno" valign="top"></td><td class="left">   responses MUST include a Proxy-Authenticate header field containing a</td><td> </td><td class="right">   responses MUST include a Proxy-Authenticate header field containing a</td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="left">   (possibly new) challenge applicable to the proxy.</td><td> </td><td class="right">   (possibly new) challenge applicable to the proxy.</td><td class="lineno" valign="top"></td></tr>
294      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
295      <tr><td class="lineno" valign="top"></td><td class="left">   A server receiving credentials that are valid, but not adequate to</td><td> </td><td class="right">   A server receiving credentials that are valid, but not adequate to</td><td class="lineno" valign="top"></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="left">   gain access, ought to respond with the 403 (Forbidden) status code</td><td> </td><td class="right">   gain access, ought to respond with the 403 (Forbidden) status code</td><td class="lineno" valign="top"></td></tr>
297      <tr><td><a name="diff0016" /></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="lblock">   (Section <span class="delete">4.6</span>.3 of [Part2]).</td><td> </td><td class="rblock">   (Section <span class="insert">7.5</span>.3 of [Part2]).</td><td class="lineno" valign="top"></td></tr>
299      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
300      <tr><td class="lineno" valign="top"></td><td class="left">   The HTTP protocol does not restrict applications to this simple</td><td> </td><td class="right">   The HTTP protocol does not restrict applications to this simple</td><td class="lineno" valign="top"></td></tr>
301      <tr><td class="lineno" valign="top"></td><td class="left">   challenge-response mechanism for access authentication.  Additional</td><td> </td><td class="right">   challenge-response mechanism for access authentication.  Additional</td><td class="lineno" valign="top"></td></tr>
302      <tr><td class="lineno" valign="top"></td><td class="left">   mechanisms MAY be used, such as encryption at the transport level or</td><td> </td><td class="right">   mechanisms MAY be used, such as encryption at the transport level or</td><td class="lineno" valign="top"></td></tr>
303      <tr><td class="lineno" valign="top"></td><td class="left">   via message encapsulation, and with additional header fields</td><td> </td><td class="right">   via message encapsulation, and with additional header fields</td><td class="lineno" valign="top"></td></tr>
304      <tr><td class="lineno" valign="top"></td><td class="left">   specifying authentication information.  However, such additional</td><td> </td><td class="right">   specifying authentication information.  However, such additional</td><td class="lineno" valign="top"></td></tr>
305      <tr><td class="lineno" valign="top"></td><td class="left">   mechanisms are not defined by this specification.</td><td> </td><td class="right">   mechanisms are not defined by this specification.</td><td class="lineno" valign="top"></td></tr>
306      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
307      <tr><td class="lineno" valign="top"></td><td class="left">   Proxies MUST forward the WWW-Authenticate and Authorization header</td><td> </td><td class="right">   Proxies MUST forward the WWW-Authenticate and Authorization header</td><td class="lineno" valign="top"></td></tr>
308      <tr><td class="lineno" valign="top"></td><td class="left">   fields unmodified and follow the rules found in Section 4.1.</td><td> </td><td class="right">   fields unmodified and follow the rules found in Section 4.1.</td><td class="lineno" valign="top"></td></tr>
309      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
310      <tr bgcolor="gray" ><td></td><th><a name="part-l6" /><small>skipping to change at</small><em> page 8, line 36</em></th><th> </th><th><a name="part-r6" /><small>skipping to change at</small><em> page 8, line 4</em></th><td></td></tr>
311      <tr><td class="lineno" valign="top"></td><td class="left">   There are certain aspects of the HTTP Authentication Framework that</td><td> </td><td class="right">   There are certain aspects of the HTTP Authentication Framework that</td><td class="lineno" valign="top"></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="left">   put constraints on how new authentication schemes can work:</td><td> </td><td class="right">   put constraints on how new authentication schemes can work:</td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
314      <tr><td class="lineno" valign="top"></td><td class="left">   o  HTTP authentication is presumed to be stateless: all of the</td><td> </td><td class="right">   o  HTTP authentication is presumed to be stateless: all of the</td><td class="lineno" valign="top"></td></tr>
315      <tr><td class="lineno" valign="top"></td><td class="left">      information necessary to authenticate a request MUST be provided</td><td> </td><td class="right">      information necessary to authenticate a request MUST be provided</td><td class="lineno" valign="top"></td></tr>
316      <tr><td class="lineno" valign="top"></td><td class="left">      in the request, rather than be dependent on the server remembering</td><td> </td><td class="right">      in the request, rather than be dependent on the server remembering</td><td class="lineno" valign="top"></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="left">      prior requests.  Authentication based on, or bound to, the</td><td> </td><td class="right">      prior requests.  Authentication based on, or bound to, the</td><td class="lineno" valign="top"></td></tr>
318      <tr><td class="lineno" valign="top"></td><td class="left">      underlying connection is outside the scope of this specification</td><td> </td><td class="right">      underlying connection is outside the scope of this specification</td><td class="lineno" valign="top"></td></tr>
319      <tr><td class="lineno" valign="top"></td><td class="left">      and inherently flawed unless steps are taken to ensure that the</td><td> </td><td class="right">      and inherently flawed unless steps are taken to ensure that the</td><td class="lineno" valign="top"></td></tr>
320      <tr><td class="lineno" valign="top"></td><td class="left">      connection cannot be used by any party other than the</td><td> </td><td class="right">      connection cannot be used by any party other than the</td><td class="lineno" valign="top"></td></tr>
321      <tr><td><a name="diff0017" /></td></tr>
322      <tr><td class="lineno" valign="top"></td><td class="lblock">      authenticated user (see Section 2.<span class="delete">4</span> of [Part1]).</td><td> </td><td class="rblock">      authenticated user (see Section 2.<span class="insert">3</span> of [Part1]).</td><td class="lineno" valign="top"></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="left">   o  The authentication parameter "realm" is reserved for defining</td><td> </td><td class="right">   o  The authentication parameter "realm" is reserved for defining</td><td class="lineno" valign="top"></td></tr>
325      <tr><td class="lineno" valign="top"></td><td class="left">      Protection Spaces as defined in Section 2.2.  New schemes MUST NOT</td><td> </td><td class="right">      Protection Spaces as defined in Section 2.2.  New schemes MUST NOT</td><td class="lineno" valign="top"></td></tr>
326      <tr><td class="lineno" valign="top"></td><td class="left">      use it in a way incompatible with that definition.</td><td> </td><td class="right">      use it in a way incompatible with that definition.</td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
328      <tr><td><a name="diff0018" /></td></tr>
329      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  The "<span class="delete">b64token</span>" notation was introduced for compatibility with</td><td> </td><td class="rblock">   o  The "<span class="insert">token68</span>" notation was introduced for compatibility with</td><td class="lineno" valign="top"></td></tr>
330      <tr><td class="lineno" valign="top"></td><td class="left">      existing authentication schemes and can only be used once per</td><td> </td><td class="right">      existing authentication schemes and can only be used once per</td><td class="lineno" valign="top"></td></tr>
331      <tr><td class="lineno" valign="top"></td><td class="left">      challenge/credentials.  New schemes thus ought to use the "auth-</td><td> </td><td class="right">      challenge/credentials.  New schemes thus ought to use the "auth-</td><td class="lineno" valign="top"></td></tr>
332      <tr><td class="lineno" valign="top"></td><td class="left">      param" syntax instead, because otherwise future extensions will be</td><td> </td><td class="right">      param" syntax instead, because otherwise future extensions will be</td><td class="lineno" valign="top"></td></tr>
333      <tr><td class="lineno" valign="top"></td><td class="left">      impossible.</td><td> </td><td class="right">      impossible.</td><td class="lineno" valign="top"></td></tr>
334      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
335      <tr><td class="lineno" valign="top"></td><td class="left">   o  The parsing of challenges and credentials is defined by this</td><td> </td><td class="right">   o  The parsing of challenges and credentials is defined by this</td><td class="lineno" valign="top"></td></tr>
336      <tr><td class="lineno" valign="top"></td><td class="left">      specification, and cannot be modified by new authentication</td><td> </td><td class="right">      specification, and cannot be modified by new authentication</td><td class="lineno" valign="top"></td></tr>
337      <tr><td class="lineno" valign="top"></td><td class="left">      schemes.  When the auth-param syntax is used, all parameters ought</td><td> </td><td class="right">      schemes.  When the auth-param syntax is used, all parameters ought</td><td class="lineno" valign="top"></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="left">      to support both token and quoted-string syntax, and syntactical</td><td> </td><td class="right">      to support both token and quoted-string syntax, and syntactical</td><td class="lineno" valign="top"></td></tr>
339      <tr><td class="lineno" valign="top"></td><td class="left">      constraints ought to be defined on the field value after parsing</td><td> </td><td class="right">      constraints ought to be defined on the field value after parsing</td><td class="lineno" valign="top"></td></tr>
340      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
341      <tr bgcolor="gray" ><td></td><th><a name="part-l7" /><small>skipping to change at</small><em> page 14, line 44</em></th><th> </th><th><a name="part-r7" /><small>skipping to change at</small><em> page 14, line 4</em></th><td></td></tr>
342      <tr><td class="lineno" valign="top"></td><td class="left">   Possible mitigation strategies include restricting direct access to</td><td> </td><td class="right">   Possible mitigation strategies include restricting direct access to</td><td class="lineno" valign="top"></td></tr>
343      <tr><td class="lineno" valign="top"></td><td class="left">   authentication credentials (i.e., not making the content of the</td><td> </td><td class="right">   authentication credentials (i.e., not making the content of the</td><td class="lineno" valign="top"></td></tr>
344      <tr><td class="lineno" valign="top"></td><td class="left">   Authorization request header field available), and separating</td><td> </td><td class="right">   Authorization request header field available), and separating</td><td class="lineno" valign="top"></td></tr>
345      <tr><td class="lineno" valign="top"></td><td class="left">   protection spaces by using a different host name for each party.</td><td> </td><td class="right">   protection spaces by using a different host name for each party.</td><td class="lineno" valign="top"></td></tr>
346      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
347      <tr><td class="lineno" valign="top"></td><td class="left">7.  Acknowledgments</td><td> </td><td class="right">7.  Acknowledgments</td><td class="lineno" valign="top"></td></tr>
348      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
349      <tr><td class="lineno" valign="top"></td><td class="left">   This specification takes over the definition of the HTTP</td><td> </td><td class="right">   This specification takes over the definition of the HTTP</td><td class="lineno" valign="top"></td></tr>
350      <tr><td class="lineno" valign="top"></td><td class="left">   Authentication Framework, previously defined in RFC 2617.  We thank</td><td> </td><td class="right">   Authentication Framework, previously defined in RFC 2617.  We thank</td><td class="lineno" valign="top"></td></tr>
351      <tr><td class="lineno" valign="top"></td><td class="left">   John Franks, Phillip M. Hallam-Baker, Jeffery L. Hostetler, Scott D.</td><td> </td><td class="right">   John Franks, Phillip M. Hallam-Baker, Jeffery L. Hostetler, Scott D.</td><td class="lineno" valign="top"></td></tr>
352      <tr><td><a name="diff0019" /></td></tr>
353      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                                                                         </span></td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="left">   Lawrence, Paul J. Leach, Ari Luotonen, and Lawrence C. Stewart for</td><td> </td><td class="right">   Lawrence, Paul J. Leach, Ari Luotonen, and Lawrence C. Stewart for</td><td class="lineno" valign="top"></td></tr>
355      <tr><td class="lineno" valign="top"></td><td class="left">   their work on that specification.  See Section 6 of [RFC2617] for</td><td> </td><td class="right">   their work on that specification.  See Section 6 of [RFC2617] for</td><td class="lineno" valign="top"></td></tr>
356      <tr><td class="lineno" valign="top"></td><td class="left">   further acknowledgements.</td><td> </td><td class="right">   further acknowledgements.</td><td class="lineno" valign="top"></td></tr>
357      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="left">   See Section 9 of [Part1] for the Acknowledgments related to this</td><td> </td><td class="right">   See Section 9 of [Part1] for the Acknowledgments related to this</td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="left">   document revision.</td><td> </td><td class="right">   document revision.</td><td class="lineno" valign="top"></td></tr>
360      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
361      <tr><td class="lineno" valign="top"></td><td class="left">8.  References</td><td> </td><td class="right">8.  References</td><td class="lineno" valign="top"></td></tr>
362      <tr><td><a name="diff0020" /></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">                                                                         </span></td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno" valign="top"></td><td class="left">8.1.  Normative References</td><td> </td><td class="right">8.1.  Normative References</td><td class="lineno" valign="top"></td></tr>
365      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
366      <tr><td><a name="diff0021" /></td></tr>
367      <tr><td class="lineno" valign="top"></td><td class="lblock">   [Part1]    Fielding, R., <span class="delete">Ed., Lafon, Y., Ed.,</span> and J. Reschke, Ed.,</td><td> </td><td class="rblock">   [Part1]    Fielding, R., <span class="insert">Ed.</span> and J. Reschke, Ed., <span class="insert">"Hypertext Transfer</span></td><td class="lineno" valign="top"></td></tr>
368      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">"HTTP/1.1, part 1:</span> Message <span class="delete">Routing</span> and <span class="delete">Syntax"",</span></td><td> </td><td class="rblock"><span class="insert">              Protocol (HTTP/1.1):</span> Message <span class="insert">Syntax</span> and <span class="insert">Routing",</span></td><td class="lineno" valign="top"></td></tr>
369      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">              draft-ietf-httpbis-p1-messaging-20</span> (work in progress),</td><td> </td><td class="rblock"><span class="insert">              draft-ietf-httpbis-p1-messaging-21</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
370      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">July</span> 2012.</td><td> </td><td class="rblock">              <span class="insert">October</span> 2012.</td><td class="lineno" valign="top"></td></tr>
371      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
372      <tr><td><a name="diff0022" /></td></tr>
373      <tr><td class="lineno" valign="top"></td><td class="lblock">   [Part2]    Fielding, R., <span class="delete">Ed., Lafon, Y., Ed.,</span> and J. Reschke, Ed.,</td><td> </td><td class="rblock">   [Part2]    Fielding, R., <span class="insert">Ed.</span> and J. Reschke, Ed., <span class="insert">"Hypertext Transfer</span></td><td class="lineno" valign="top"></td></tr>
374      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">"HTTP/1.1, part 2:</span> Semantics and <span class="delete">Payloads",</span></td><td> </td><td class="rblock"><span class="insert">              Protocol (HTTP/1.1):</span> Semantics and <span class="insert">Content",</span></td><td class="lineno" valign="top"></td></tr>
375      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">              draft-ietf-httpbis-p2-semantics-20</span> (work in progress),</td><td> </td><td class="rblock"><span class="insert">              draft-ietf-httpbis-p2-semantics-21</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
376      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">July</span> 2012.</td><td> </td><td class="rblock">              <span class="insert">October</span> 2012.</td><td class="lineno" valign="top"></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
378      <tr><td><a name="diff0023" /></td></tr>
379      <tr><td class="lineno" valign="top"></td><td class="lblock">   [Part6]    Fielding, R., Ed., <span class="delete">Lafon, Y., Ed.,</span> Nottingham, M., Ed.,</td><td> </td><td class="rblock">   [Part6]    Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke,</td><td class="lineno" valign="top"></td></tr>
380      <tr><td class="lineno" valign="top"></td><td class="lblock">              and J. Reschke, Ed., <span class="delete">"HTTP/1.1, part 6:</span> Caching",</td><td> </td><td class="rblock">              Ed., <span class="insert">"Hypertext Transfer Protocol (HTTP/1.1):</span> Caching",</td><td class="lineno" valign="top"></td></tr>
381      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p6-cache-20</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p6-cache-21</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
382      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">July</span> 2012.</td><td> </td><td class="rblock">              <span class="insert">October</span> 2012.</td><td class="lineno" valign="top"></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
384      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate</td><td> </td><td class="right">   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate</td><td class="lineno" valign="top"></td></tr>
385      <tr><td class="lineno" valign="top"></td><td class="left">              Requirement Levels", BCP 14, RFC 2119, March 1997.</td><td> </td><td class="right">              Requirement Levels", BCP 14, RFC 2119, March 1997.</td><td class="lineno" valign="top"></td></tr>
386      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
387      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC5234]  Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax</td><td> </td><td class="right">   [RFC5234]  Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax</td><td class="lineno" valign="top"></td></tr>
388      <tr><td class="lineno" valign="top"></td><td class="left">              Specifications: ABNF", STD 68, RFC 5234, January 2008.</td><td> </td><td class="right">              Specifications: ABNF", STD 68, RFC 5234, January 2008.</td><td class="lineno" valign="top"></td></tr>
389      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="left">8.2.  Informative References</td><td> </td><td class="right">8.2.  Informative References</td><td class="lineno" valign="top"></td></tr>
391      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
392      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,</td><td> </td><td class="right">   [RFC2616]  Fielding, R., Gettys, J., Mogul, J., Frystyk, H.,</td><td class="lineno" valign="top"></td></tr>
393      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
394      <tr bgcolor="gray" ><td></td><th><a name="part-l8" /><small>skipping to change at</small><em> page 16, line 11</em></th><th> </th><th><a name="part-r8" /><small>skipping to change at</small><em> page 15, line 20</em></th><td></td></tr>
395      <tr><td class="lineno" valign="top"></td><td class="left">   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an</td><td> </td><td class="right">   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an</td><td class="lineno" valign="top"></td></tr>
396      <tr><td class="lineno" valign="top"></td><td class="left">              IANA Considerations Section in RFCs", BCP 26, RFC 5226,</td><td> </td><td class="right">              IANA Considerations Section in RFCs", BCP 26, RFC 5226,</td><td class="lineno" valign="top"></td></tr>
397      <tr><td class="lineno" valign="top"></td><td class="left">              May 2008.</td><td> </td><td class="right">              May 2008.</td><td class="lineno" valign="top"></td></tr>
398      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
399      <tr><td class="lineno" valign="top"></td><td class="left">Appendix A.  Changes from RFCs 2616 and 2617</td><td> </td><td class="right">Appendix A.  Changes from RFCs 2616 and 2617</td><td class="lineno" valign="top"></td></tr>
400      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
401      <tr><td class="lineno" valign="top"></td><td class="left">   The "realm" parameter isn't required anymore in general;</td><td> </td><td class="right">   The "realm" parameter isn't required anymore in general;</td><td class="lineno" valign="top"></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="left">   consequently, the ABNF allows challenges without any auth parameters.</td><td> </td><td class="right">   consequently, the ABNF allows challenges without any auth parameters.</td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 2)</td><td> </td><td class="right">   (Section 2)</td><td class="lineno" valign="top"></td></tr>
404      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
405      <tr><td><a name="diff0024" /></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="lblock">   The "<span class="delete">b64token</span>" alternative to auth-param lists has been added for</td><td> </td><td class="rblock">   The "<span class="insert">token68</span>" alternative to auth-param lists has been added for</td><td class="lineno" valign="top"></td></tr>
407      <tr><td class="lineno" valign="top"></td><td class="left">   consistency with legacy authentication schemes such as "Basic".</td><td> </td><td class="right">   consistency with legacy authentication schemes such as "Basic".</td><td class="lineno" valign="top"></td></tr>
408      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 2)</td><td> </td><td class="right">   (Section 2)</td><td class="lineno" valign="top"></td></tr>
409      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="left">   Introduce Authentication Scheme Registry.  (Section 2.3)</td><td> </td><td class="right">   Introduce Authentication Scheme Registry.  (Section 2.3)</td><td class="lineno" valign="top"></td></tr>
411      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
412      <tr><td><a name="diff0025" /></td></tr>
413      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Change ABNF productions for header fields to only define the field</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
414      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   value.  (Section 4)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
415      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
416      <tr><td class="lineno" valign="top"></td><td class="left">Appendix B.  Imported ABNF</td><td> </td><td class="right">Appendix B.  Imported ABNF</td><td class="lineno" valign="top"></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
418      <tr><td class="lineno" valign="top"></td><td class="left">   The following core rules are included by reference, as defined in</td><td> </td><td class="right">   The following core rules are included by reference, as defined in</td><td class="lineno" valign="top"></td></tr>
419      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix B.1 of [RFC5234]: ALPHA (letters), CR (carriage return),</td><td> </td><td class="right">   Appendix B.1 of [RFC5234]: ALPHA (letters), CR (carriage return),</td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno" valign="top"></td><td class="left">   CRLF (CR LF), CTL (controls), DIGIT (decimal 0-9), DQUOTE (double</td><td> </td><td class="right">   CRLF (CR LF), CTL (controls), DIGIT (decimal 0-9), DQUOTE (double</td><td class="lineno" valign="top"></td></tr>
421      <tr><td class="lineno" valign="top"></td><td class="left">   quote), HEXDIG (hexadecimal 0-9/A-F/a-f), LF (line feed), OCTET (any</td><td> </td><td class="right">   quote), HEXDIG (hexadecimal 0-9/A-F/a-f), LF (line feed), OCTET (any</td><td class="lineno" valign="top"></td></tr>
422      <tr><td class="lineno" valign="top"></td><td class="left">   8-bit sequence of data), SP (space), and VCHAR (any visible US-ASCII</td><td> </td><td class="right">   8-bit sequence of data), SP (space), and VCHAR (any visible US-ASCII</td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="left">   character).</td><td> </td><td class="right">   character).</td><td class="lineno" valign="top"></td></tr>
424      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="left">   The rules below are defined in [Part1]:</td><td> </td><td class="right">   The rules below are defined in [Part1]:</td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
427      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 17, line 23</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 16, line 23</em></th><td></td></tr>
428      <tr><td class="lineno" valign="top"></td><td class="left">   Proxy-Authenticate = *( "," OWS ) challenge *( OWS "," [ OWS</td><td> </td><td class="right">   Proxy-Authenticate = *( "," OWS ) challenge *( OWS "," [ OWS</td><td class="lineno" valign="top"></td></tr>
429      <tr><td class="lineno" valign="top"></td><td class="left">    challenge ] )</td><td> </td><td class="right">    challenge ] )</td><td class="lineno" valign="top"></td></tr>
430      <tr><td class="lineno" valign="top"></td><td class="left">   Proxy-Authorization = credentials</td><td> </td><td class="right">   Proxy-Authorization = credentials</td><td class="lineno" valign="top"></td></tr>
431      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
432      <tr><td class="lineno" valign="top"></td><td class="left">   WWW-Authenticate = *( "," OWS ) challenge *( OWS "," [ OWS challenge</td><td> </td><td class="right">   WWW-Authenticate = *( "," OWS ) challenge *( OWS "," [ OWS challenge</td><td class="lineno" valign="top"></td></tr>
433      <tr><td class="lineno" valign="top"></td><td class="left">    ] )</td><td> </td><td class="right">    ] )</td><td class="lineno" valign="top"></td></tr>
434      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
435      <tr><td class="lineno" valign="top"></td><td class="left">   auth-param = token BWS "=" BWS ( token / quoted-string )</td><td> </td><td class="right">   auth-param = token BWS "=" BWS ( token / quoted-string )</td><td class="lineno" valign="top"></td></tr>
436      <tr><td class="lineno" valign="top"></td><td class="left">   auth-scheme = token</td><td> </td><td class="right">   auth-scheme = token</td><td class="lineno" valign="top"></td></tr>
437      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
438      <tr><td><a name="diff0026" /></td></tr>
439      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">b64token = 1*( ALPHA / DIGIT / "-" / "." / "_" / "~" / "+" / "/" )</span></td><td> </td><td class="rblock">   challenge = auth-scheme [ 1*SP ( <span class="insert">token68</span> / [ ( "," / auth-param ) *(</td><td class="lineno" valign="top"></td></tr>
440      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">    *"="</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
442      <tr><td class="lineno" valign="top"></td><td class="lblock">   challenge = auth-scheme [ 1*SP ( <span class="delete">b64token</span> / [ ( "," / auth-param ) *(</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
443      <tr><td class="lineno" valign="top"></td><td class="left">    OWS "," [ OWS auth-param ] ) ] ) ]</td><td> </td><td class="right">    OWS "," [ OWS auth-param ] ) ] ) ]</td><td class="lineno" valign="top"></td></tr>
444      <tr><td><a name="diff0027" /></td></tr>
445      <tr><td class="lineno" valign="top"></td><td class="lblock">   credentials = auth-scheme [ 1*SP ( <span class="delete">b64token</span> / [ ( "," / auth-param )</td><td> </td><td class="rblock">   credentials = auth-scheme [ 1*SP ( <span class="insert">token68</span> / [ ( "," / auth-param )</td><td class="lineno" valign="top"></td></tr>
446      <tr><td class="lineno" valign="top"></td><td class="left">    *( OWS "," [ OWS auth-param ] ) ] ) ]</td><td> </td><td class="right">    *( OWS "," [ OWS auth-param ] ) ] ) ]</td><td class="lineno" valign="top"></td></tr>
447      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
448      <tr><td class="lineno" valign="top"></td><td class="left">   quoted-string = &lt;quoted-string, defined in [Part1], Section 3.2.4&gt;</td><td> </td><td class="right">   quoted-string = &lt;quoted-string, defined in [Part1], Section 3.2.4&gt;</td><td class="lineno" valign="top"></td></tr>
449      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="left">   token = &lt;token, defined in [Part1], Section 3.2.4&gt;</td><td> </td><td class="right">   token = &lt;token, defined in [Part1], Section 3.2.4&gt;</td><td class="lineno" valign="top"></td></tr>
451      <tr><td><a name="diff0028" /></td></tr>
452      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   <span class="insert">token68 = 1*( ALPHA / DIGIT / "-" / "." / "_" / "~" / "+" / "/" )</span></td><td class="lineno" valign="top"></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">    *"="</span></td><td class="lineno" valign="top"></td></tr>
454      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="left">Appendix D.  Change Log (to be removed by RFC Editor before publication)</td><td> </td><td class="right">Appendix D.  Change Log (to be removed by RFC Editor before publication)</td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
457      <tr><td class="lineno" valign="top"></td><td class="left">   Changes up to the first Working Group Last Call draft are summarized</td><td> </td><td class="right">   Changes up to the first Working Group Last Call draft are summarized</td><td class="lineno" valign="top"></td></tr>
458      <tr><td class="lineno" valign="top"></td><td class="left">   in &lt;http://trac.tools.ietf.org/html/</td><td> </td><td class="right">   in &lt;http://trac.tools.ietf.org/html/</td><td class="lineno" valign="top"></td></tr>
459      <tr><td class="lineno" valign="top"></td><td class="left">   draft-ietf-httpbis-p7-auth-19#appendix-C&gt;.</td><td> </td><td class="right">   draft-ietf-httpbis-p7-auth-19#appendix-C&gt;.</td><td class="lineno" valign="top"></td></tr>
460      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno" valign="top"></td><td class="left">D.1.  Since draft-ietf-httpbis-p7-auth-19</td><td> </td><td class="right">D.1.  Since draft-ietf-httpbis-p7-auth-19</td><td class="lineno" valign="top"></td></tr>
462      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="left">   Closed issues:</td><td> </td><td class="right">   Closed issues:</td><td class="lineno" valign="top"></td></tr>
464      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
465      <tr bgcolor="gray" ><td></td><th><a name="part-l10" /><small>skipping to change at</small><em> page 18, line 11</em></th><th> </th><th><a name="part-r10" /><small>skipping to change at</small><em> page 17, line 11</em></th><td></td></tr>
466      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
467      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/357&gt;:</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/357&gt;:</td><td class="lineno" valign="top"></td></tr>
468      <tr><td class="lineno" valign="top"></td><td class="left">      "Authentication exchanges"</td><td> </td><td class="right">      "Authentication exchanges"</td><td class="lineno" valign="top"></td></tr>
469      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
470      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/361&gt;: "ABNF</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/361&gt;: "ABNF</td><td class="lineno" valign="top"></td></tr>
471      <tr><td class="lineno" valign="top"></td><td class="left">      requirements for recipients"</td><td> </td><td class="right">      requirements for recipients"</td><td class="lineno" valign="top"></td></tr>
472      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
473      <tr><td class="lineno" valign="top"></td><td class="left">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/368&gt;: "note</td><td> </td><td class="right">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/368&gt;: "note</td><td class="lineno" valign="top"></td></tr>
474      <tr><td class="lineno" valign="top"></td><td class="left">      introduction of new IANA registries as normative changes"</td><td> </td><td class="right">      introduction of new IANA registries as normative changes"</td><td class="lineno" valign="top"></td></tr>
475      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
476      <tr><td><a name="diff0029" /></td></tr>
477      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">D.2.  Since draft-ietf-httpbis-p7-auth-20</span></td><td class="lineno" valign="top"></td></tr>
478      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
479      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Closed issues:</span></td><td class="lineno" valign="top"></td></tr>
480      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
481      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/376&gt;: "rename</span></td><td class="lineno" valign="top"></td></tr>
482      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      b64token for clarity"</span></td><td class="lineno" valign="top"></td></tr>
483      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
484      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   Other changes:</span></td><td class="lineno" valign="top"></td></tr>
485      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert"></span></td><td class="lineno" valign="top"></td></tr>
486      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">   o  Conformance criteria and considerations regarding error handling</span></td><td class="lineno" valign="top"></td></tr>
487      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      are now defined in Part 1.</span></td><td class="lineno" valign="top"></td></tr>
488      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">                                                                         </td><td class="lineno" valign="top"></td></tr>
489      <tr><td class="lineno" valign="top"></td><td class="left">Index</td><td> </td><td class="right">Index</td><td class="lineno" valign="top"></td></tr>
490      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
491      <tr><td class="lineno" valign="top"></td><td class="left">   4</td><td> </td><td class="right">   4</td><td class="lineno" valign="top"></td></tr>
492      <tr><td class="lineno" valign="top"></td><td class="left">      401 Unauthorized (status code)  9</td><td> </td><td class="right">      401 Unauthorized (status code)  9</td><td class="lineno" valign="top"></td></tr>
493      <tr><td><a name="diff0030" /></td></tr>
494      <tr><td class="lineno" valign="top"></td><td class="lblock">      407 Proxy Authentication Required (status code)  <span class="delete">10</span></td><td> </td><td class="rblock">      407 Proxy Authentication Required (status code)  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
495      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
496      <tr><td class="lineno" valign="top"></td><td class="left">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
497      <tr><td><a name="diff0031" /></td></tr>
498      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">auth-param  5</span></td><td> </td><td class="rblock">      Authorization header field  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
499      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      auth-scheme  5</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
500      <tr><td class="lineno" valign="top"></td><td class="lblock">      Authorization header field  <span class="delete">10</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
501      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
502      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   B</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
503      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      b64token  5</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
504      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
505      <tr><td class="lineno" valign="top"></td><td class="left">   C</td><td> </td><td class="right">   C</td><td class="lineno" valign="top"></td></tr>
506      <tr><td><a name="diff0032" /></td></tr>
507      <tr><td class="lineno" valign="top"></td><td class="lblock">      Canonical Root URI  <span class="delete">7</span></td><td> </td><td class="rblock">      Canonical Root URI  6</td><td class="lineno" valign="top"></td></tr>
508      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      challenge  6</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
509      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      credentials</span>  6</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
510      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
511      <tr><td class="lineno" valign="top"></td><td class="left">   G</td><td> </td><td class="right">   G</td><td class="lineno" valign="top"></td></tr>
512      <tr><td class="lineno" valign="top"></td><td class="left">      Grammar</td><td> </td><td class="right">      Grammar</td><td class="lineno" valign="top"></td></tr>
513      <tr><td class="lineno" valign="top"></td><td class="left">         auth-param  5</td><td> </td><td class="right">         auth-param  5</td><td class="lineno" valign="top"></td></tr>
514      <tr><td class="lineno" valign="top"></td><td class="left">         auth-scheme  5</td><td> </td><td class="right">         auth-scheme  5</td><td class="lineno" valign="top"></td></tr>
515      <tr><td><a name="diff0033" /></td></tr>
516      <tr><td class="lineno" valign="top"></td><td class="lblock">         Authorization  <span class="delete">10</span></td><td> </td><td class="rblock">         Authorization  <span class="insert">9</span></td><td class="lineno" valign="top"></td></tr>
517      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         b64token  5</span></td><td> </td><td class="rblock">         challenge  <span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
518      <tr><td class="lineno" valign="top"></td><td class="lblock">         challenge  <span class="delete">6</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
519      <tr><td class="lineno" valign="top"></td><td class="left">         credentials  6</td><td> </td><td class="right">         credentials  6</td><td class="lineno" valign="top"></td></tr>
520      <tr><td><a name="diff0034" /></td></tr>
521      <tr><td class="lineno" valign="top"></td><td class="lblock">         Proxy-Authenticate  <span class="delete">11</span></td><td> </td><td class="rblock">         Proxy-Authenticate  10</td><td class="lineno" valign="top"></td></tr>
522      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         Proxy-Authorization  11</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
523      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         WWW-Authenticate  12</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
524      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
525      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   H</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
526      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Header Fields</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
527      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         Authorization</span>  10</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
528      <tr><td class="lineno" valign="top"></td><td class="lblock">         <span class="delete">Proxy-Authenticate  11</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
529      <tr><td class="lineno" valign="top"></td><td class="left">         Proxy-Authorization  11</td><td> </td><td class="right">         Proxy-Authorization  11</td><td class="lineno" valign="top"></td></tr>
530      <tr><td><a name="diff0035" /></td></tr>
531      <tr><td class="lineno" valign="top"></td><td class="lblock">         WWW-Authenticate  <span class="delete">12</span></td><td> </td><td class="rblock">         <span class="insert">token68  5</span></td><td class="lineno" valign="top"></td></tr>
532      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">         WWW-Authenticate  <span class="insert">11</span></td><td class="lineno" valign="top"></td></tr>
533      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
534      <tr><td class="lineno" valign="top"></td><td class="left">   P</td><td> </td><td class="right">   P</td><td class="lineno" valign="top"></td></tr>
535      <tr><td><a name="diff0036" /></td></tr>
536      <tr><td class="lineno" valign="top"></td><td class="lblock">      Protection Space  <span class="delete">7</span></td><td> </td><td class="rblock">      Protection Space  <span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
537      <tr><td class="lineno" valign="top"></td><td class="lblock">      Proxy-Authenticate header field  <span class="delete">11</span></td><td> </td><td class="rblock">      Proxy-Authenticate header field  <span class="insert">10</span></td><td class="lineno" valign="top"></td></tr>
538      <tr><td class="lineno" valign="top"></td><td class="lblock">      Proxy-Authorization header field  <span class="delete">11</span></td><td> </td><td class="rblock">      Proxy-Authorization header field  <span class="insert">10</span></td><td class="lineno" valign="top"></td></tr>
539      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
540      <tr><td class="lineno" valign="top"></td><td class="left">   R</td><td> </td><td class="right">   R</td><td class="lineno" valign="top"></td></tr>
541      <tr><td><a name="diff0037" /></td></tr>
542      <tr><td class="lineno" valign="top"></td><td class="lblock">      Realm  <span class="delete">7</span></td><td> </td><td class="rblock">      Realm  <span class="insert">6</span></td><td class="lineno" valign="top"></td></tr>
543      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
544      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   S</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
545      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Status Codes</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
546      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         401 Unauthorized  9</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
547      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">         407 Proxy Authentication Required  10</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
548      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
549      <tr><td class="lineno" valign="top"></td><td class="left">   W</td><td> </td><td class="right">   W</td><td class="lineno" valign="top"></td></tr>
550      <tr><td><a name="diff0038" /></td></tr>
551      <tr><td class="lineno" valign="top"></td><td class="lblock">      WWW-Authenticate header field  1<span class="delete">2</span></td><td> </td><td class="rblock">      WWW-Authenticate header field  1<span class="insert">1</span></td><td class="lineno" valign="top"></td></tr>
552      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
553      <tr><td class="lineno" valign="top"></td><td class="left">Authors' Addresses</td><td> </td><td class="right">Authors' Addresses</td><td class="lineno" valign="top"></td></tr>
554      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
555      <tr><td class="lineno" valign="top"></td><td class="left">   Roy T. Fielding (editor)</td><td> </td><td class="right">   Roy T. Fielding (editor)</td><td class="lineno" valign="top"></td></tr>
556      <tr><td class="lineno" valign="top"></td><td class="left">   Adobe Systems Incorporated</td><td> </td><td class="right">   Adobe Systems Incorporated</td><td class="lineno" valign="top"></td></tr>
557      <tr><td class="lineno" valign="top"></td><td class="left">   345 Park Ave</td><td> </td><td class="right">   345 Park Ave</td><td class="lineno" valign="top"></td></tr>
558      <tr><td class="lineno" valign="top"></td><td class="left">   San Jose, CA  95110</td><td> </td><td class="right">   San Jose, CA  95110</td><td class="lineno" valign="top"></td></tr>
559      <tr><td class="lineno" valign="top"></td><td class="left">   USA</td><td> </td><td class="right">   USA</td><td class="lineno" valign="top"></td></tr>
560      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
561      <tr><td class="lineno" valign="top"></td><td class="left">   EMail: fielding@gbiv.com</td><td> </td><td class="right">   EMail: fielding@gbiv.com</td><td class="lineno" valign="top"></td></tr>
562      <tr><td class="lineno" valign="top"></td><td class="left">   URI:   http://roy.gbiv.com/</td><td> </td><td class="right">   URI:   http://roy.gbiv.com/</td><td class="lineno" valign="top"></td></tr>
563      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
564      <tr><td><a name="diff0039" /></td></tr>
565      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Yves Lafon (editor)</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
566      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   World Wide Web Consortium</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
567      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   W3C / ERCIM</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
568      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   2004, rte des Lucioles</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
569      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Sophia-Antipolis, AM  06902</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
570      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   France</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
571      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
572      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   EMail: ylafon@w3.org</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
573      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   URI:   http://www.raubacapeu.net/people/yves/</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
574      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
575      <tr><td class="lineno" valign="top"></td><td class="left">   Julian F. Reschke (editor)</td><td> </td><td class="right">   Julian F. Reschke (editor)</td><td class="lineno" valign="top"></td></tr>
576      <tr><td class="lineno" valign="top"></td><td class="left">   greenbytes GmbH</td><td> </td><td class="right">   greenbytes GmbH</td><td class="lineno" valign="top"></td></tr>
577      <tr><td class="lineno" valign="top"></td><td class="left">   Hafenweg 16</td><td> </td><td class="right">   Hafenweg 16</td><td class="lineno" valign="top"></td></tr>
578      <tr><td class="lineno" valign="top"></td><td class="left">   Muenster, NW  48155</td><td> </td><td class="right">   Muenster, NW  48155</td><td class="lineno" valign="top"></td></tr>
579      <tr><td class="lineno" valign="top"></td><td class="left">   Germany</td><td> </td><td class="right">   Germany</td><td class="lineno" valign="top"></td></tr>
580      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
581      <tr><td class="lineno" valign="top"></td><td class="left">   EMail: julian.reschke@greenbytes.de</td><td> </td><td class="right">   EMail: julian.reschke@greenbytes.de</td><td class="lineno" valign="top"></td></tr>
582      <tr><td class="lineno" valign="top"></td><td class="left">   URI:   http://greenbytes.de/tech/webdav/</td><td> </td><td class="right">   URI:   http://greenbytes.de/tech/webdav/</td><td class="lineno" valign="top"></td></tr>
583
584     <tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
585     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 39 change blocks.&nbsp;</a></th></tr>
586     <tr class="stats"><td></td><th><i>140 lines changed or deleted</i></th><th><i> </i></th><th><i>88 lines changed or added</i></th><td></td></tr>
587     <tr><td colspan="5" align="center" class="small"><br/>This html diff was produced by rfcdiff 1.38. The latest version is available from <a href="http://www.tools.ietf.org/tools/rfcdiff/" >http://tools.ietf.org/tools/rfcdiff/</a> </td></tr>
588   </table>
589   </body>
590   </html>
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