source: draft-ietf-httpbis/diffs/draft-ietf-httpbis-p7-auth-25-from-24.diff.html @ 2650

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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-24.txt&nbsp;</th><th> </th><th>&nbsp;draft-ietf-httpbis-p7-auth-25.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 class="lineno" valign="top"></td><td class="left">Obsoletes: 2616 (if approved)                            J. Reschke, Ed.</td><td> </td><td class="right">Obsoletes: 2616 (if approved)                            J. Reschke, Ed.</td><td class="lineno" valign="top"></td></tr>
43      <tr><td class="lineno" valign="top"></td><td class="left">Updates: 2617 (if approved)                                   greenbytes</td><td> </td><td class="right">Updates: 2617 (if approved)                                   greenbytes</td><td class="lineno" valign="top"></td></tr>
44      <tr><td><a name="diff0001" /></td></tr>
45      <tr><td class="lineno" valign="top"></td><td class="lblock">Intended status: Standards Track                      <span class="delete">September 25,</span> 2013</td><td> </td><td class="rblock">Intended status: Standards Track                       <span class="insert">November 17,</span> 2013</td><td class="lineno" valign="top"></td></tr>
46      <tr><td class="lineno" valign="top"></td><td class="lblock">Expires: <span class="delete">March 29,</span> 2014</td><td> </td><td class="rblock">Expires: <span class="insert">May 21,</span> 2014</td><td class="lineno" valign="top"></td></tr>
47      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
48      <tr><td class="lineno" valign="top"></td><td class="left">         Hypertext Transfer Protocol (HTTP/1.1): Authentication</td><td> </td><td class="right">         Hypertext Transfer Protocol (HTTP/1.1): Authentication</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">                     draft-ietf-httpbis-p7-auth-2<span class="delete">4</span></td><td> </td><td class="rblock">                     draft-ietf-httpbis-p7-auth-2<span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
51      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
52      <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>
53      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
54      <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>
55      <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>
56      <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>
57      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
58      <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>
59      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
60      <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>
61      <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>
62      <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>
63      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
64      <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>
65      <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>
66      <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>
67      <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>
68      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
69      <tr><td><a name="diff0003" /></td></tr>
70      <tr><td class="lineno" valign="top"></td><td class="lblock">   The changes in this draft are summarized in Appendix D.<span class="delete">5</span>.</td><td> </td><td class="rblock">   The changes in this draft are summarized in Appendix D.<span class="insert">1</span>.</td><td class="lineno" valign="top"></td></tr>
71      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
72      <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>
73      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
74      <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>
75      <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>
76      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
77      <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>
78      <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>
79      <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>
80      <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>
81      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
82      <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>
83      <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>
84      <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>
85      <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>
86      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
87      <tr><td><a name="diff0004" /></td></tr>
88      <tr><td class="lineno" valign="top"></td><td class="lblock">   This Internet-Draft will expire on Ma<span class="delete">rch 29</span>, 2014.</td><td> </td><td class="rblock">   This Internet-Draft will expire on Ma<span class="insert">y 21</span>, 2014.</td><td class="lineno" valign="top"></td></tr>
89      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
90      <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>
91      <tr><td class="lineno" valign="top"></td><td class="left">   Copyright (c) 2013 IETF Trust and the persons identified as the</td><td> </td><td class="right">   Copyright (c) 2013 IETF Trust and the persons identified as the</td><td class="lineno" valign="top"></td></tr>
92      <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>
93      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
94      <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>
95      <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>
96      <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>
97      <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>
98      <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>
99      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
100      <tr bgcolor="gray" ><td></td><th><a name="part-l2" /><small>skipping to change at</small><em> page 3, line 17</em></th><th> </th><th><a name="part-r2" /><small>skipping to change at</small><em> page 3, line 17</em></th><td></td></tr>
101      <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>
102      <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>
103      <tr><td class="lineno" valign="top"></td><td class="left">     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4</td><td> </td><td class="right">     1.2.  Syntax Notation  . . . . . . . . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
104      <tr><td class="lineno" valign="top"></td><td class="left">   2.  Access Authentication Framework  . . . . . . . . . . . . . . .  4</td><td> </td><td class="right">   2.  Access Authentication Framework  . . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
105      <tr><td class="lineno" valign="top"></td><td class="left">     2.1.  Challenge and Response . . . . . . . . . . . . . . . . . .  4</td><td> </td><td class="right">     2.1.  Challenge and Response . . . . . . . . . . . . . . . . . .  4</td><td class="lineno" valign="top"></td></tr>
106      <tr><td class="lineno" valign="top"></td><td class="left">     2.2.  Protection Space (Realm) . . . . . . . . . . . . . . . . .  6</td><td> </td><td class="right">     2.2.  Protection Space (Realm) . . . . . . . . . . . . . . . . .  6</td><td class="lineno" valign="top"></td></tr>
107      <tr><td class="lineno" valign="top"></td><td class="left">   3.  Status Code Definitions  . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">   3.  Status Code Definitions  . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
108      <tr><td class="lineno" valign="top"></td><td class="left">     3.1.  401 Unauthorized . . . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">     3.1.  401 Unauthorized . . . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
109      <tr><td class="lineno" valign="top"></td><td class="left">     3.2.  407 Proxy Authentication Required  . . . . . . . . . . . .  7</td><td> </td><td class="right">     3.2.  407 Proxy Authentication Required  . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
110      <tr><td class="lineno" valign="top"></td><td class="left">   4.  Header Field Definitions . . . . . . . . . . . . . . . . . . .  7</td><td> </td><td class="right">   4.  Header Field Definitions . . . . . . . . . . . . . . . . . . .  7</td><td class="lineno" valign="top"></td></tr>
111      <tr><td><a name="diff0005" /></td></tr>
112      <tr><td class="lineno" valign="top"></td><td class="lblock">     4.1.  Authorization  . . . . . . . . . . . . . . . . . . . . . .  <span class="delete">8</span></td><td> </td><td class="rblock">     4.1.  Authorization  . . . . . . . . . . . . . . . . . . . . . .  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
113      <tr><td class="lineno" valign="top"></td><td class="left">     4.2.  Proxy-Authenticate . . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="right">     4.2.  Proxy-Authenticate . . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
114      <tr><td class="lineno" valign="top"></td><td class="left">     4.3.  Proxy-Authorization  . . . . . . . . . . . . . . . . . . .  8</td><td> </td><td class="right">     4.3.  Proxy-Authorization  . . . . . . . . . . . . . . . . . . .  8</td><td class="lineno" valign="top"></td></tr>
115      <tr><td class="lineno" valign="top"></td><td class="left">     4.4.  WWW-Authenticate . . . . . . . . . . . . . . . . . . . . .  9</td><td> </td><td class="right">     4.4.  WWW-Authenticate . . . . . . . . . . . . . . . . . . . . .  9</td><td class="lineno" valign="top"></td></tr>
116      <tr><td class="lineno" valign="top"></td><td class="left">   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10</td><td> </td><td class="right">   5.  IANA Considerations  . . . . . . . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
117      <tr><td class="lineno" valign="top"></td><td class="left">     5.1.  Authentication Scheme Registry . . . . . . . . . . . . . . 10</td><td> </td><td class="right">     5.1.  Authentication Scheme Registry . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
118      <tr><td class="lineno" valign="top"></td><td class="left">       5.1.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 10</td><td> </td><td class="right">       5.1.1.  Procedure  . . . . . . . . . . . . . . . . . . . . . . 10</td><td class="lineno" valign="top"></td></tr>
119      <tr><td class="lineno" valign="top"></td><td class="left">       5.1.2.  Considerations for New Authentication Schemes  . . . . 10</td><td> </td><td class="right">       5.1.2.  Considerations for New Authentication Schemes  . . . . 10</td><td class="lineno" valign="top"></td></tr>
120      <tr><td class="lineno" valign="top"></td><td class="left">     5.2.  Status Code Registration . . . . . . . . . . . . . . . . . 11</td><td> </td><td class="right">     5.2.  Status Code Registration . . . . . . . . . . . . . . . . . 11</td><td class="lineno" valign="top"></td></tr>
121      <tr><td class="lineno" valign="top"></td><td class="left">     5.3.  Header Field Registration  . . . . . . . . . . . . . . . . 12</td><td> </td><td class="right">     5.3.  Header Field Registration  . . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
122      <tr><td class="lineno" valign="top"></td><td class="left">   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12</td><td> </td><td class="right">   6.  Security Considerations  . . . . . . . . . . . . . . . . . . . 12</td><td class="lineno" valign="top"></td></tr>
123      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
124      <tr bgcolor="gray" ><td></td><th><a name="part-l3" /><small>skipping to change at</small><em> page 3, line 39</em></th><th> </th><th><a name="part-r3" /><small>skipping to change at</small><em> page 3, line 39</em></th><td></td></tr>
125      <tr><td class="lineno" valign="top"></td><td class="left">     6.2.  Protection Spaces  . . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="right">     6.2.  Protection Spaces  . . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
126      <tr><td class="lineno" valign="top"></td><td class="left">   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 13</td><td> </td><td class="right">   7.  Acknowledgments  . . . . . . . . . . . . . . . . . . . . . . . 13</td><td class="lineno" valign="top"></td></tr>
127      <tr><td class="lineno" valign="top"></td><td class="left">   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14</td><td> </td><td class="right">   8.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 14</td><td class="lineno" valign="top"></td></tr>
128      <tr><td class="lineno" valign="top"></td><td class="left">     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 14</td><td> </td><td class="right">     8.1.  Normative References . . . . . . . . . . . . . . . . . . . 14</td><td class="lineno" valign="top"></td></tr>
129      <tr><td class="lineno" valign="top"></td><td class="left">     8.2.  Informative References . . . . . . . . . . . . . . . . . . 14</td><td> </td><td class="right">     8.2.  Informative References . . . . . . . . . . . . . . . . . . 14</td><td class="lineno" valign="top"></td></tr>
130      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix A.  Changes from RFCs 2616 and 2617 . . . . . . . . . . . 15</td><td> </td><td class="right">   Appendix A.  Changes from RFCs 2616 and 2617 . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
131      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . 15</td><td> </td><td class="right">   Appendix B.  Imported ABNF . . . . . . . . . . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
132      <tr><td class="lineno" valign="top"></td><td class="left">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 15</td><td> </td><td class="right">   Appendix C.  Collected ABNF  . . . . . . . . . . . . . . . . . . . 15</td><td class="lineno" valign="top"></td></tr>
133      <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>
134      <tr><td class="lineno" valign="top"></td><td class="left">                publication)  . . . . . . . . . . . . . . . . . . . . 16</td><td> </td><td class="right">                publication)  . . . . . . . . . . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
135      <tr><td><a name="diff0006" /></td></tr>
136      <tr><td class="lineno" valign="top"></td><td class="lblock">     D.1.  Since <span class="delete">draft-ietf-httpbis-p7-auth-19</span>  . . . . . . . . . . . 16</td><td> </td><td class="rblock">     D.1.  Since <span class="insert">draft-ietf-httpbis-p7-auth-24</span>  . . . . . . . . . . . 16</td><td class="lineno" valign="top"></td></tr>
137      <tr><td class="lineno" valign="top"></td><td class="lblock">     <span class="delete">D.2.  Since draft-ietf-httpbis-p7-auth-20  . . . . . . . . . . . 17</span></td><td> </td><td class="rblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="insert">17</span></td><td class="lineno" valign="top"></td></tr>
138      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     D.3.  Since draft-ietf-httpbis-p7-auth-21  . . . . . . . . . . . 17</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
139      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     D.4.  Since draft-ietf-httpbis-p7-auth-22  . . . . . . . . . . . 17</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
140      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">     D.5.  Since draft-ietf-httpbis-p7-auth-23  . . . . . . . . . . . 17</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
141      <tr><td class="lineno" valign="top"></td><td class="lblock">   Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <span class="delete">18</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
142      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
143      <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>
144      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
145      <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>
146      <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>
147      <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>
148      <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>
149      <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>
150      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
151      <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>
152      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
153      <tr bgcolor="gray" ><td></td><th><a name="part-l4" /><small>skipping to change at</small><em> page 5, line 30</em></th><th> </th><th><a name="part-r4" /><small>skipping to change at</small><em> page 5, line 30</em></th><td></td></tr>
154      <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>
155      <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>
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">   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>
158      <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>
159      <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>
160      <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>
161      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
162      <tr><td class="lineno" valign="top"></td><td class="left">     challenge   = auth-scheme [ 1*SP ( token68 / #auth-param ) ]</td><td> </td><td class="right">     challenge   = auth-scheme [ 1*SP ( token68 / #auth-param ) ]</td><td class="lineno" valign="top"></td></tr>
163      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
164      <tr><td><a name="diff0007" /></td></tr>
165      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">Note: User agents will need to take special care in parsing the</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
166      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      WWW-Authenticate and Proxy-Authenticate header field values</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
167      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      because they can contain more than one challenge, or if more than</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
168      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      one of each is provided, since the contents of a challenge can</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
169      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      itself contain a comma-separated list of authentication</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
170      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      parameters.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
171      <tr><td class="lineno" valign="top"></td><td class="lblock">                                                                         </td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
172      <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>
173      <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>
174      <tr><td class="lineno" valign="top"></td><td class="left">      schemes (such as "basic") first.</td><td> </td><td class="right">      schemes (such as "basic") first.</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 class="lineno" valign="top"></td><td class="left">   A user agent that wishes to authenticate itself with an origin server</td><td> </td><td class="right">   A user agent that wishes to authenticate itself with an origin server</td><td class="lineno" valign="top"></td></tr>
177      <tr><td class="lineno" valign="top"></td><td class="left">   -- usually, but not necessarily, after receiving a 401 (Unauthorized)</td><td> </td><td class="right">   -- usually, but not necessarily, after receiving a 401 (Unauthorized)</td><td class="lineno" valign="top"></td></tr>
178      <tr><td class="lineno" valign="top"></td><td class="left">   -- can do so by including an Authorization header field with the</td><td> </td><td class="right">   -- can do so by including an Authorization header field with the</td><td class="lineno" valign="top"></td></tr>
179      <tr><td class="lineno" valign="top"></td><td class="left">   request.</td><td> </td><td class="right">   request.</td><td class="lineno" valign="top"></td></tr>
180      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
181      <tr><td class="lineno" valign="top"></td><td class="left">   A client that wishes to authenticate itself with a proxy -- usually,</td><td> </td><td class="right">   A client that wishes to authenticate itself with a proxy -- usually,</td><td class="lineno" valign="top"></td></tr>
182      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
183      <tr bgcolor="gray" ><td></td><th><a name="part-l5" /><small>skipping to change at</small><em> page 6, line 12</em></th><th> </th><th><a name="part-r5" /><small>skipping to change at</small><em> page 6, line 5</em></th><td></td></tr>
184      <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>
185      <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>
186      <tr><td class="lineno" valign="top"></td><td class="left">   being requested, based upon a challenge received in a response</td><td> </td><td class="right">   being requested, based upon a challenge received in a response</td><td class="lineno" valign="top"></td></tr>
187      <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>
188      <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>
189      <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>
190      <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>
191      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
192      <tr><td class="lineno" valign="top"></td><td class="left">     credentials = auth-scheme [ 1*SP ( token68 / #auth-param ) ]</td><td> </td><td class="right">     credentials = auth-scheme [ 1*SP ( token68 / #auth-param ) ]</td><td class="lineno" valign="top"></td></tr>
193      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
194      <tr><td><a name="diff0008" /></td></tr>
195      <tr><td class="lineno" valign="top"></td><td class="lblock">   Upon a request for a protected resource that omits credentials,</td><td> </td><td class="rblock">   Upon <span class="insert">receipt of</span> a request for a protected resource that omits</td><td class="lineno" valign="top"></td></tr>
196      <tr><td class="lineno" valign="top"></td><td class="lblock">   contains invalid credentials (e.g., a bad password) or partial</td><td> </td><td class="rblock">   credentials, contains invalid credentials (e.g., a bad password) or</td><td class="lineno" valign="top"></td></tr>
197      <tr><td class="lineno" valign="top"></td><td class="lblock">   credentials (e.g., when the authentication scheme requires more than</td><td> </td><td class="rblock">   partial credentials (e.g., when the authentication scheme requires</td><td class="lineno" valign="top"></td></tr>
198      <tr><td class="lineno" valign="top"></td><td class="lblock">   one round trip), an origin server SHOULD send a 401 (Unauthorized)</td><td> </td><td class="rblock">   more than one round trip), an origin server SHOULD send a 401</td><td class="lineno" valign="top"></td></tr>
199      <tr><td class="lineno" valign="top"></td><td class="lblock">   response that contains a WWW-Authenticate header field with at least</td><td> </td><td class="rblock">   (Unauthorized) response that contains a WWW-Authenticate header field</td><td class="lineno" valign="top"></td></tr>
200      <tr><td class="lineno" valign="top"></td><td class="lblock">   one (possibly new) challenge applicable to the requested resource.</td><td> </td><td class="rblock">   with at least one (possibly new) challenge applicable to the</td><td class="lineno" valign="top"></td></tr>
201      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   requested resource.</td><td class="lineno" valign="top"></td></tr>
202      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
203      <tr><td><a name="diff0009" /></td></tr>
204      <tr><td class="lineno" valign="top"></td><td class="lblock">   Likewise, upon a request that requires authentication by proxies that</td><td> </td><td class="rblock">   Likewise, upon <span class="insert">receipt of</span> a request that requires authentication by</td><td class="lineno" valign="top"></td></tr>
205      <tr><td class="lineno" valign="top"></td><td class="lblock">   omit credentials or contain invalid or partial credentials, a proxy</td><td> </td><td class="rblock">   proxies that omit credentials or contain invalid or partial</td><td class="lineno" valign="top"></td></tr>
206      <tr><td class="lineno" valign="top"></td><td class="lblock">   SHOULD send a 407 (Proxy Authentication Required) response that</td><td> </td><td class="rblock">   credentials, a proxy SHOULD send a 407 (Proxy Authentication</td><td class="lineno" valign="top"></td></tr>
207      <tr><td class="lineno" valign="top"></td><td class="lblock">   contains a Proxy-Authenticate header field with a (possibly new)</td><td> </td><td class="rblock">   Required) response that contains a Proxy-Authenticate header field</td><td class="lineno" valign="top"></td></tr>
208      <tr><td class="lineno" valign="top"></td><td class="lblock">   challenge applicable to the proxy.</td><td> </td><td class="rblock">   with a (possibly new) challenge applicable to the proxy.</td><td class="lineno" valign="top"></td></tr>
209      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
210      <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>
211      <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>
212      <tr><td class="lineno" valign="top"></td><td class="left">   (Section 6.5.3 of [Part2]).</td><td> </td><td class="right">   (Section 6.5.3 of [Part2]).</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><a name="diff0010" /></td></tr>
215      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">The</span> HTTP <span class="delete">protocol</span> does not restrict applications to this simple</td><td> </td><td class="rblock">   HTTP does not restrict applications to this simple challenge-response</td><td class="lineno" valign="top"></td></tr>
216      <tr><td class="lineno" valign="top"></td><td class="lblock">   challenge-response framework for access authentication.  Additional</td><td> </td><td class="rblock">   framework for access authentication.  Additional mechanisms <span class="insert">can</span> be</td><td class="lineno" valign="top"></td></tr>
217      <tr><td class="lineno" valign="top"></td><td class="lblock">   mechanisms <span class="delete">MAY</span> be used, such as <span class="delete">encryption</span> at the transport level or</td><td> </td><td class="rblock">   used, such as <span class="insert">authentication</span> at the transport level or via message</td><td class="lineno" valign="top"></td></tr>
218      <tr><td class="lineno" valign="top"></td><td class="lblock">   via message encapsulation, and with additional header fields</td><td> </td><td class="rblock">   encapsulation, and with additional header fields specifying</td><td class="lineno" valign="top"></td></tr>
219      <tr><td class="lineno" valign="top"></td><td class="lblock">   specifying authentication information.  However, such additional</td><td> </td><td class="rblock">   authentication information.  However, such additional mechanisms are</td><td class="lineno" valign="top"></td></tr>
220      <tr><td class="lineno" valign="top"></td><td class="lblock">   mechanisms are not defined by this specification.</td><td> </td><td class="rblock">   not defined by this specification.</td><td class="lineno" valign="top"></td></tr>
221      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
222      <tr><td class="lineno" valign="top"></td><td class="left">   A proxy MUST forward the WWW-Authenticate and Authorization header</td><td> </td><td class="right">   A proxy MUST forward the WWW-Authenticate and Authorization header</td><td class="lineno" valign="top"></td></tr>
223      <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>
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">2.2.  Protection Space (Realm)</td><td> </td><td class="right">2.2.  Protection Space (Realm)</td><td class="lineno" valign="top"></td></tr>
226      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
227      <tr><td class="lineno" valign="top"></td><td class="left">   The authentication parameter realm is reserved for use by</td><td> </td><td class="right">   The authentication parameter realm is reserved for use by</td><td class="lineno" valign="top"></td></tr>
228      <tr><td class="lineno" valign="top"></td><td class="left">   authentication schemes that wish to indicate the scope of protection.</td><td> </td><td class="right">   authentication schemes that wish to indicate the scope of protection.</td><td class="lineno" valign="top"></td></tr>
229      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
230      <tr><td class="lineno" valign="top"></td><td class="left">   A protection space is defined by the canonical root URI (the scheme</td><td> </td><td class="right">   A protection space is defined by the canonical root URI (the scheme</td><td class="lineno" valign="top"></td></tr>
231      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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233      <tr><td class="lineno" valign="top"></td><td class="left">   with its own authentication scheme and/or authorization database.</td><td> </td><td class="right">   with its own authentication scheme and/or authorization database.</td><td class="lineno" valign="top"></td></tr>
234      <tr><td class="lineno" valign="top"></td><td class="left">   The realm value is a string, generally assigned by the origin server,</td><td> </td><td class="right">   The realm value is a string, generally assigned by the origin server,</td><td class="lineno" valign="top"></td></tr>
235      <tr><td class="lineno" valign="top"></td><td class="left">   which can have additional semantics specific to the authentication</td><td> </td><td class="right">   which can have additional semantics specific to the authentication</td><td class="lineno" valign="top"></td></tr>
236      <tr><td class="lineno" valign="top"></td><td class="left">   scheme.  Note that a response can have multiple challenges with the</td><td> </td><td class="right">   scheme.  Note that a response can have multiple challenges with the</td><td class="lineno" valign="top"></td></tr>
237      <tr><td class="lineno" valign="top"></td><td class="left">   same auth-scheme but different realms.</td><td> </td><td class="right">   same auth-scheme but different realms.</td><td class="lineno" valign="top"></td></tr>
238      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
239      <tr><td class="lineno" valign="top"></td><td class="left">   The protection space determines the domain over which credentials can</td><td> </td><td class="right">   The protection space determines the domain over which credentials can</td><td class="lineno" valign="top"></td></tr>
240      <tr><td class="lineno" valign="top"></td><td class="left">   be automatically applied.  If a prior request has been authorized,</td><td> </td><td class="right">   be automatically applied.  If a prior request has been authorized,</td><td class="lineno" valign="top"></td></tr>
241      <tr><td class="lineno" valign="top"></td><td class="left">   the user agent MAY reuse the same credentials for all other requests</td><td> </td><td class="right">   the user agent MAY reuse the same credentials for all other requests</td><td class="lineno" valign="top"></td></tr>
242      <tr><td class="lineno" valign="top"></td><td class="left">   within that protection space for a period of time determined by the</td><td> </td><td class="right">   within that protection space for a period of time determined by the</td><td class="lineno" valign="top"></td></tr>
243      <tr><td><a name="diff0011" /></td></tr>
244      <tr><td class="lineno" valign="top"></td><td class="lblock">   authentication scheme, parameters, and/or user <span class="delete">preference.</span>  Unless</td><td> </td><td class="rblock">   authentication scheme, parameters, and/or user <span class="insert">preferences (such as a</span></td><td class="lineno" valign="top"></td></tr>
245      <tr><td class="lineno" valign="top"></td><td class="lblock">   specifically allowed by the authentication scheme, a single</td><td> </td><td class="rblock"><span class="insert">   configurable inactivity timeout).</span>  Unless specifically allowed by the</td><td class="lineno" valign="top"></td></tr>
246      <tr><td class="lineno" valign="top"></td><td class="lblock">   protection space cannot extend outside the scope of its server.</td><td> </td><td class="rblock">   authentication scheme, a single protection space cannot extend</td><td class="lineno" valign="top"></td></tr>
247      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock">   outside the scope of its server.</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">   For historical reasons, a sender MUST only generate the quoted-string</td><td> </td><td class="right">   For historical reasons, a sender MUST only generate the quoted-string</td><td class="lineno" valign="top"></td></tr>
250      <tr><td class="lineno" valign="top"></td><td class="left">   syntax.  Recipients might have to support both token and quoted-</td><td> </td><td class="right">   syntax.  Recipients might have to support both token and quoted-</td><td class="lineno" valign="top"></td></tr>
251      <tr><td class="lineno" valign="top"></td><td class="left">   string syntax for maximum interoperability with existing clients that</td><td> </td><td class="right">   string syntax for maximum interoperability with existing clients that</td><td class="lineno" valign="top"></td></tr>
252      <tr><td class="lineno" valign="top"></td><td class="left">   have been accepting both notations for a long time.</td><td> </td><td class="right">   have been accepting both notations for a long time.</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 class="lineno" valign="top"></td><td class="left">3.  Status Code Definitions</td><td> </td><td class="right">3.  Status Code Definitions</td><td class="lineno" valign="top"></td></tr>
255      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
256      <tr><td class="lineno" valign="top"></td><td class="left">3.1.  401 Unauthorized</td><td> </td><td class="right">3.1.  401 Unauthorized</td><td class="lineno" valign="top"></td></tr>
257      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
258      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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260      <tr><td class="lineno" valign="top"></td><td class="left">   The "WWW-Authenticate" header field consists of at least one</td><td> </td><td class="right">   The "WWW-Authenticate" header field consists of at least one</td><td class="lineno" valign="top"></td></tr>
261      <tr><td class="lineno" valign="top"></td><td class="left">   challenge that indicates the authentication scheme(s) and parameters</td><td> </td><td class="right">   challenge that indicates the authentication scheme(s) and parameters</td><td class="lineno" valign="top"></td></tr>
262      <tr><td class="lineno" valign="top"></td><td class="left">   applicable to the effective request URI (Section 5.5 of [Part1]).</td><td> </td><td class="right">   applicable to the effective request URI (Section 5.5 of [Part1]).</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">   It MUST be included in 401 (Unauthorized) response messages and MAY</td><td> </td><td class="right">   It MUST be included in 401 (Unauthorized) response messages and MAY</td><td class="lineno" valign="top"></td></tr>
265      <tr><td class="lineno" valign="top"></td><td class="left">   be included in other response messages to indicate that supplying</td><td> </td><td class="right">   be included in other response messages to indicate that supplying</td><td class="lineno" valign="top"></td></tr>
266      <tr><td class="lineno" valign="top"></td><td class="left">   credentials (or different credentials) might affect the response.</td><td> </td><td class="right">   credentials (or different credentials) might affect the response.</td><td class="lineno" valign="top"></td></tr>
267      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
268      <tr><td class="lineno" valign="top"></td><td class="left">     WWW-Authenticate = 1#challenge</td><td> </td><td class="right">     WWW-Authenticate = 1#challenge</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><a name="diff0012" /></td></tr>
271      <tr><td class="lineno" valign="top"></td><td class="lblock">   User agents are advised to take special care in parsing the <span class="delete">WWW-</span></td><td> </td><td class="rblock">   User agents are advised to take special care in parsing the field</td><td class="lineno" valign="top"></td></tr>
272      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Authenticate</span> field <span class="delete">value</span> as it might contain more than one challenge,</td><td> </td><td class="rblock">   <span class="insert">value,</span> as it might contain more than one challenge, <span class="insert">and each</span></td><td class="lineno" valign="top"></td></tr>
273      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">or if more than one WWW-Authenticate header field is provided, the</span></td><td> </td><td class="rblock">   challenge can contain a comma-separated list of authentication</td><td class="lineno" valign="top"></td></tr>
274      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   contents of a</span> challenge <span class="delete">itself</span> can contain a comma-separated list of</td><td> </td><td class="rblock">   parameters.  <span class="insert">Furthermore, the header field itself can occur multiple</span></td><td class="lineno" valign="top"></td></tr>
275      <tr><td class="lineno" valign="top"></td><td class="lblock">   authentication parameters.</td><td> </td><td class="rblock"><span class="insert">   times.</span></td><td class="lineno" valign="top"></td></tr>
276      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
277      <tr><td class="lineno" valign="top"></td><td class="left">   For instance:</td><td> </td><td class="right">   For instance:</td><td class="lineno" valign="top"></td></tr>
278      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
279      <tr><td class="lineno" valign="top"></td><td class="left">     WWW-Authenticate: Newauth realm="apps", type=1,</td><td> </td><td class="right">     WWW-Authenticate: Newauth realm="apps", type=1,</td><td class="lineno" valign="top"></td></tr>
280      <tr><td class="lineno" valign="top"></td><td class="left">                       title="Login to \"apps\"", Basic realm="simple"</td><td> </td><td class="right">                       title="Login to \"apps\"", Basic realm="simple"</td><td class="lineno" valign="top"></td></tr>
281      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
282      <tr><td class="lineno" valign="top"></td><td class="left">   This header field contains two challenges; one for the "Newauth"</td><td> </td><td class="right">   This header field contains two challenges; one for the "Newauth"</td><td class="lineno" valign="top"></td></tr>
283      <tr><td class="lineno" valign="top"></td><td class="left">   scheme with a realm value of "apps", and two additional parameters</td><td> </td><td class="right">   scheme with a realm value of "apps", and two additional parameters</td><td class="lineno" valign="top"></td></tr>
284      <tr><td class="lineno" valign="top"></td><td class="left">   "type" and "title", and another one for the "Basic" scheme with a</td><td> </td><td class="right">   "type" and "title", and another one for the "Basic" scheme with a</td><td class="lineno" valign="top"></td></tr>
285      <tr><td class="lineno" valign="top"></td><td class="left">   realm value of "simple".</td><td> </td><td class="right">   realm value of "simple".</td><td class="lineno" valign="top"></td></tr>
286      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
287      <tr><td class="lineno" valign="top"></td><td class="left">      Note: The challenge grammar production uses the list syntax as</td><td> </td><td class="right">      Note: The challenge grammar production uses the list syntax as</td><td class="lineno" valign="top"></td></tr>
288      <tr><td class="lineno" valign="top"></td><td class="left">      well.  Therefore, a sequence of comma, whitespace, and comma can</td><td> </td><td class="right">      well.  Therefore, a sequence of comma, whitespace, and comma can</td><td class="lineno" valign="top"></td></tr>
289      <tr><td><a name="diff0013" /></td></tr>
290      <tr><td class="lineno" valign="top"></td><td class="lblock">      be considered <span class="delete">both</span> as applying to the preceding challenge, or to</td><td> </td><td class="rblock">      be considered <span class="insert">either</span> as applying to the preceding challenge, or to</td><td class="lineno" valign="top"></td></tr>
291      <tr><td class="lineno" valign="top"></td><td class="left">      be an empty entry in the list of challenges.  In practice, this</td><td> </td><td class="right">      be an empty entry in the list of challenges.  In practice, this</td><td class="lineno" valign="top"></td></tr>
292      <tr><td class="lineno" valign="top"></td><td class="left">      ambiguity does not affect the semantics of the header field value</td><td> </td><td class="right">      ambiguity does not affect the semantics of the header field value</td><td class="lineno" valign="top"></td></tr>
293      <tr><td class="lineno" valign="top"></td><td class="left">      and thus is harmless.</td><td> </td><td class="right">      and thus is harmless.</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">5.  IANA Considerations</td><td> </td><td class="right">5.  IANA Considerations</td><td class="lineno" valign="top"></td></tr>
296      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
297      <tr><td class="lineno" valign="top"></td><td class="left">5.1.  Authentication Scheme Registry</td><td> </td><td class="right">5.1.  Authentication Scheme Registry</td><td class="lineno" valign="top"></td></tr>
298      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
299      <tr><td class="lineno" valign="top"></td><td class="left">   The HTTP Authentication Scheme Registry defines the name space for</td><td> </td><td class="right">   The HTTP Authentication Scheme Registry defines the name space for</td><td class="lineno" valign="top"></td></tr>
300      <tr><td class="lineno" valign="top"></td><td class="left">   the authentication schemes in challenges and credentials.  It will be</td><td> </td><td class="right">   the authentication schemes in challenges and credentials.  It will be</td><td class="lineno" valign="top"></td></tr>
301      <tr><td><a name="diff0014" /></td></tr>
302      <tr><td class="lineno" valign="top"></td><td class="lblock">   created and maintained at</td><td> </td><td class="rblock">   created and maintained at<span class="insert"> (the suggested URI)</span></td><td class="lineno" valign="top"></td></tr>
303      <tr><td class="lineno" valign="top"></td><td class="left">   &lt;http://www.iana.org/assignments/http-authschemes&gt;.</td><td> </td><td class="right">   &lt;http://www.iana.org/assignments/http-authschemes&gt;.</td><td class="lineno" valign="top"></td></tr>
304      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
305      <tr><td class="lineno" valign="top"></td><td class="left">5.1.1.  Procedure</td><td> </td><td class="right">5.1.1.  Procedure</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">   Registrations MUST include the following fields:</td><td> </td><td class="right">   Registrations MUST include the following fields:</td><td class="lineno" valign="top"></td></tr>
308      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
309      <tr><td class="lineno" valign="top"></td><td class="left">   o  Authentication Scheme Name</td><td> </td><td class="right">   o  Authentication Scheme Name</td><td class="lineno" valign="top"></td></tr>
310      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
311      <tr><td class="lineno" valign="top"></td><td class="left">   o  Pointer to specification text</td><td> </td><td class="right">   o  Pointer to specification text</td><td class="lineno" valign="top"></td></tr>
312      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
313      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
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315      <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>
316      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
317      <tr><td class="lineno" valign="top"></td><td class="left">   See Section 10 of [Part1] for the Acknowledgments related to this</td><td> </td><td class="right">   See Section 10 of [Part1] for the Acknowledgments related to this</td><td class="lineno" valign="top"></td></tr>
318      <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>
319      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
320      <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>
321      <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>
322      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
323      <tr><td class="lineno" valign="top"></td><td class="left">   [Part1]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td> </td><td class="right">   [Part1]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td class="lineno" valign="top"></td></tr>
324      <tr><td class="lineno" valign="top"></td><td class="left">              Protocol (HTTP/1.1): Message Syntax and Routing",</td><td> </td><td class="right">              Protocol (HTTP/1.1): Message Syntax and Routing",</td><td class="lineno" valign="top"></td></tr>
325      <tr><td><a name="diff0015" /></td></tr>
326      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p1-messaging-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p1-messaging-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
327      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
328      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
329      <tr><td class="lineno" valign="top"></td><td class="left">   [Part2]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td> </td><td class="right">   [Part2]    Fielding, R., Ed. and J. Reschke, Ed., "Hypertext Transfer</td><td class="lineno" valign="top"></td></tr>
330      <tr><td class="lineno" valign="top"></td><td class="left">              Protocol (HTTP/1.1): Semantics and Content",</td><td> </td><td class="right">              Protocol (HTTP/1.1): Semantics and Content",</td><td class="lineno" valign="top"></td></tr>
331      <tr><td><a name="diff0016" /></td></tr>
332      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p2-semantics-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p2-semantics-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
333      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</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">   [Part6]    Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke,</td><td> </td><td class="right">   [Part6]    Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke,</td><td class="lineno" valign="top"></td></tr>
336      <tr><td class="lineno" valign="top"></td><td class="left">              Ed., "Hypertext Transfer Protocol (HTTP/1.1): Caching",</td><td> </td><td class="right">              Ed., "Hypertext Transfer Protocol (HTTP/1.1): Caching",</td><td class="lineno" valign="top"></td></tr>
337      <tr><td><a name="diff0017" /></td></tr>
338      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">draft-ietf-httpbis-p6-cache-24</span> (work in progress),</td><td> </td><td class="rblock">              <span class="insert">draft-ietf-httpbis-p6-cache-25</span> (work in progress),</td><td class="lineno" valign="top"></td></tr>
339      <tr><td class="lineno" valign="top"></td><td class="lblock">              <span class="delete">September</span> 2013.</td><td> </td><td class="rblock">              <span class="insert">November</span> 2013.</td><td class="lineno" valign="top"></td></tr>
340      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
341      <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>
342      <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>
343      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
344      <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>
345      <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>
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">8.2.  Informative References</td><td> </td><td class="right">8.2.  Informative References</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">   [BCP90]    Klyne, G., Nottingham, M., and J. Mogul, "Registration</td><td> </td><td class="right">   [BCP90]    Klyne, G., Nottingham, M., and J. Mogul, "Registration</td><td class="lineno" valign="top"></td></tr>
350      <tr><td class="lineno"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno"></td></tr>
351      <tr bgcolor="gray" ><td></td><th><a name="part-l9" /><small>skipping to change at</small><em> page 16, line 34</em></th><th> </th><th><a name="part-r9" /><small>skipping to change at</small><em> page 16, line 34</em></th><td></td></tr>
352      <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>
353      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
354      <tr><td class="lineno" valign="top"></td><td class="left">   quoted-string = &lt;quoted-string, defined in [Part1], Section 3.2.6&gt;</td><td> </td><td class="right">   quoted-string = &lt;quoted-string, defined in [Part1], Section 3.2.6&gt;</td><td class="lineno" valign="top"></td></tr>
355      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
356      <tr><td class="lineno" valign="top"></td><td class="left">   token = &lt;token, defined in [Part1], Section 3.2.6&gt;</td><td> </td><td class="right">   token = &lt;token, defined in [Part1], Section 3.2.6&gt;</td><td class="lineno" valign="top"></td></tr>
357      <tr><td class="lineno" valign="top"></td><td class="left">   token68 = 1*( ALPHA / DIGIT / "-" / "." / "_" / "~" / "+" / "/" )</td><td> </td><td class="right">   token68 = 1*( ALPHA / DIGIT / "-" / "." / "_" / "~" / "+" / "/" )</td><td class="lineno" valign="top"></td></tr>
358      <tr><td class="lineno" valign="top"></td><td class="left">    *"="</td><td> </td><td class="right">    *"="</td><td class="lineno" valign="top"></td></tr>
359      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
360      <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>
361      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
362      <tr><td><a name="diff0018" /></td></tr>
363      <tr><td class="lineno" valign="top"></td><td class="lblock">   Changes up to the <span class="delete">first Working Group</span> Last Call draft are summarized</td><td> </td><td class="rblock">   Changes up to the <span class="insert">IETF</span> Last Call draft are summarized in <span class="insert">&lt;http://</span></td><td class="lineno" valign="top"></td></tr>
364      <tr><td class="lineno" valign="top"></td><td class="lblock">   in <span class="delete">&lt;http://trac.tools.ietf.org/html/</span></td><td> </td><td class="rblock"><span class="insert">   trac.tools.ietf.org/html/draft-ietf-httpbis-p7-auth-24#appendix-D&gt;.</span></td><td class="lineno" valign="top"></td></tr>
365      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   draft-ietf-httpbis-p7-auth-19#appendix-C&gt;.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
366      <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>
367      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.1.  Since draft-ietf-httpbis-p7-auth-19</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
368      <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>
369      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
370      <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>
371      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/348&gt;: "Realms and</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
372      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      scope"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
373      <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>
374      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/349&gt;: "Strength"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
375      <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>
376      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/357&gt;:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
377      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      "Authentication exchanges"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
378      <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>
379      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/361&gt;: "ABNF</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
380      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      requirements for recipients"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
381      <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>
382      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/368&gt;: "note</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
383      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      introduction of new IANA registries as normative changes"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
384      <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>
385      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.2.  Since draft-ietf-httpbis-p7-auth-20</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
386      <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>
387      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
388      <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>
389      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/376&gt;: "rename</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
390      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      b64token for clarity"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
391      <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>
392      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Other changes:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
393      <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>
394      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  Conformance criteria and considerations regarding error handling</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
395      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      are now defined in Part 1.</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
396      <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>
397      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.3.  Since draft-ietf-httpbis-p7-auth-21</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
398      <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>
399      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   Closed issues:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
400      <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>
401      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/403&gt;:</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
402      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      "Authentication and caching - max-age"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
403      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
404      <tr><td><a name="diff0019" /></td></tr>
405      <tr><td class="lineno" valign="top"></td><td class="lblock">D.<span class="delete">4.  Since draft-ietf-httpbis-p7-auth-22</span></td><td> </td><td class="rblock">D.<span class="insert">1.  Since draft-ietf-httpbis-p7-auth-24</span></td><td class="lineno" valign="top"></td></tr>
406      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
407      <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>
408      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
409      <tr><td><a name="diff0020" /></td></tr>
410      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  <span class="delete">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/436&gt;: "explain list</span></td><td> </td><td class="rblock">   o  <span class="insert">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/510&gt;: "SECDIR review</span></td><td class="lineno" valign="top"></td></tr>
411      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      expansion in ABNF appendices"</span></td><td> </td><td class="rblock">      of <span class="insert">draft-ietf-httpbis-p7-auth-24"</span></td><td class="lineno" valign="top"></td></tr>
412      <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>
413      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/439&gt;: "terminology:</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">      mechanism vs framework vs scheme"</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"><span class="delete"></span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
416      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/463&gt;: "Editorial</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
417      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      suggestions"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
418      <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>
419      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">   o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/464&gt;: "placement</span> of</td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
420      <tr><td class="lineno" valign="top"></td><td class="lblock">      <span class="delete">extension point considerations"</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
421      <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>
422      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">D.5.  Since draft-ietf-httpbis-p7-auth-23</span></td><td> </td><td class="rblock"></td><td class="lineno" valign="top"></td></tr>
423      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
424      <tr><td><a name="diff0021" /></td></tr>
425      <tr><td class="lineno" valign="top"></td><td class="lblock">   <span class="delete">Closed issues:</span></td><td> </td><td class="rblock">   <span class="insert">o  &lt;http://tools.ietf.org/wg/httpbis/trac/ticket/513&gt;: "APPSDIR</span></td><td class="lineno" valign="top"></td></tr>
426      <tr><td class="lineno" valign="top"></td><td class="lblock"></td><td> </td><td class="rblock"><span class="insert">      review of draft-ietf-httpbis-p7-auth-24"</span></td><td class="lineno" valign="top"></td></tr>
427      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
428      <tr><td><a name="diff0022" /></td></tr>
429      <tr><td class="lineno" valign="top"></td><td class="lblock">   o  <span class="delete">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/473&gt;: "Forwarding</span></td><td> </td><td class="rblock">   o  <span class="insert">&lt;http://tools.ietf.org/wg/httpbis/trac/ticket/516&gt;: "note about</span></td><td class="lineno" valign="top"></td></tr>
430      <tr><td class="lineno" valign="top"></td><td class="lblock"><span class="delete">      Proxy-*"</span></td><td> </td><td class="rblock"><span class="insert">      WWW-A parsing potentially misleading"</span></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">Index</td><td> </td><td class="right">Index</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">   4</td><td> </td><td class="right">   4</td><td class="lineno" valign="top"></td></tr>
435      <tr><td class="lineno" valign="top"></td><td class="left">      401 Unauthorized (status code)  7</td><td> </td><td class="right">      401 Unauthorized (status code)  7</td><td class="lineno" valign="top"></td></tr>
436      <tr><td class="lineno" valign="top"></td><td class="left">      407 Proxy Authentication Required (status code)  7</td><td> </td><td class="right">      407 Proxy Authentication Required (status code)  7</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 class="lineno" valign="top"></td><td class="left">   A</td><td> </td><td class="right">   A</td><td class="lineno" valign="top"></td></tr>
439      <tr><td><a name="diff0023" /></td></tr>
440      <tr><td class="lineno" valign="top"></td><td class="lblock">      Authorization header field  <span class="delete">8</span></td><td> </td><td class="rblock">      Authorization header field  <span class="insert">7</span></td><td class="lineno" valign="top"></td></tr>
441      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
442      <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>
443      <tr><td class="lineno" valign="top"></td><td class="left">      Canonical Root URI  6</td><td> </td><td class="right">      Canonical Root URI  6</td><td class="lineno" valign="top"></td></tr>
444      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
445      <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>
446      <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>
447      <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>
448      <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>
449      <tr><td class="lineno" valign="top"></td><td class="left">         Authorization  8</td><td> </td><td class="right">         Authorization  8</td><td class="lineno" valign="top"></td></tr>
450      <tr><td class="lineno" valign="top"></td><td class="left">         challenge  5</td><td> </td><td class="right">         challenge  5</td><td class="lineno" valign="top"></td></tr>
451      <tr><td><a name="diff0024" /></td></tr>
452      <tr><td class="lineno" valign="top"></td><td class="lblock">         credentials  <span class="delete">6</span></td><td> </td><td class="rblock">         credentials  <span class="insert">5</span></td><td class="lineno" valign="top"></td></tr>
453      <tr><td class="lineno" valign="top"></td><td class="left">         Proxy-Authenticate  8</td><td> </td><td class="right">         Proxy-Authenticate  8</td><td class="lineno" valign="top"></td></tr>
454      <tr><td><a name="diff0025" /></td></tr>
455      <tr><td class="lineno" valign="top"></td><td class="lblock">         Proxy-Authorization  <span class="delete">9</span></td><td> </td><td class="rblock">         Proxy-Authorization  <span class="insert">8</span></td><td class="lineno" valign="top"></td></tr>
456      <tr><td class="lineno" valign="top"></td><td class="left">         token68  5</td><td> </td><td class="right">         token68  5</td><td class="lineno" valign="top"></td></tr>
457      <tr><td class="lineno" valign="top"></td><td class="left">         WWW-Authenticate  9</td><td> </td><td class="right">         WWW-Authenticate  9</td><td class="lineno" valign="top"></td></tr>
458      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
459      <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>
460      <tr><td class="lineno" valign="top"></td><td class="left">      Protection Space  6</td><td> </td><td class="right">      Protection Space  6</td><td class="lineno" valign="top"></td></tr>
461      <tr><td class="lineno" valign="top"></td><td class="left">      Proxy-Authenticate header field  8</td><td> </td><td class="right">      Proxy-Authenticate header field  8</td><td class="lineno" valign="top"></td></tr>
462      <tr><td class="lineno" valign="top"></td><td class="left">      Proxy-Authorization header field  8</td><td> </td><td class="right">      Proxy-Authorization header field  8</td><td class="lineno" valign="top"></td></tr>
463      <tr><td class="lineno" valign="top"></td><td class="left"></td><td> </td><td class="right"></td><td class="lineno" valign="top"></td></tr>
464      <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>
465      <tr><td class="lineno" valign="top"></td><td class="left">      Realm  6</td><td> </td><td class="right">      Realm  6</td><td class="lineno" valign="top"></td></tr>
466
467     <tr><td></td><td class="left"></td><td> </td><td class="right"></td><td></td></tr>
468     <tr bgcolor="gray"><th colspan="5" align="center"><a name="end">&nbsp;End of changes. 25 change blocks.&nbsp;</a></th></tr>
469     <tr class="stats"><td></td><th><i>112 lines changed or deleted</i></th><th><i> </i></th><th><i>55 lines changed or added</i></th><td></td></tr>
470     <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>
471   </table>
472   </body>
473   </html>
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