Ignore:
Timestamp:
Apr 8, 2011, 1:15:20 AM (9 years ago)
Author:
julian.reschke@…
Message:

Remove Content-MD5 (see #178)

File:
1 edited

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  • draft-ietf-httpbis/latest/p3-payload.html

    r1260 r1267  
    359359  }
    360360  @bottom-center {
    361        content: "Expires October 7, 2011";
     361       content: "Expires October 10, 2011";
    362362  }
    363363  @bottom-right {
     
    408408      <meta name="dct.creator" content="Reschke, J. F.">
    409409      <meta name="dct.identifier" content="urn:ietf:id:draft-ietf-httpbis-p3-payload-latest">
    410       <meta name="dct.issued" scheme="ISO8601" content="2011-04-05">
     410      <meta name="dct.issued" scheme="ISO8601" content="2011-04-08">
    411411      <meta name="dct.replaces" content="urn:ietf:rfc:2616">
    412412      <meta name="dct.abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 3 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 3 defines HTTP message content, metadata, and content negotiation.">
     
    434434            </tr>
    435435            <tr>
    436                <td class="left">Expires: October 7, 2011</td>
     436               <td class="left">Expires: October 10, 2011</td>
    437437               <td class="right">J. Mogul</td>
    438438            </tr>
     
    491491            <tr>
    492492               <td class="left"></td>
    493                <td class="right">April 5, 2011</td>
     493               <td class="right">April 8, 2011</td>
    494494            </tr>
    495495         </tbody>
     
    517517         in progress”.
    518518      </p>
    519       <p>This Internet-Draft will expire on October 7, 2011.</p>
     519      <p>This Internet-Draft will expire on October 10, 2011.</p>
    520520      <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1>
    521521      <p>Copyright © 2011 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
     
    582582               <li>6.6&nbsp;&nbsp;&nbsp;<a href="#header.content-language">Content-Language</a></li>
    583583               <li>6.7&nbsp;&nbsp;&nbsp;<a href="#header.content-location">Content-Location</a></li>
    584                <li>6.8&nbsp;&nbsp;&nbsp;<a href="#header.content-md5">Content-MD5</a></li>
    585                <li>6.9&nbsp;&nbsp;&nbsp;<a href="#header.content-type">Content-Type</a></li>
     584               <li>6.8&nbsp;&nbsp;&nbsp;<a href="#header.content-type">Content-Type</a></li>
    586585            </ul>
    587586         </li>
     
    751750      </p>
    752751      <h2 id="rfc.section.2.3"><a href="#rfc.section.2.3">2.3</a>&nbsp;<a id="media.types" href="#media.types">Media Types</a></h2>
    753       <p id="rfc.section.2.3.p.1">HTTP uses Internet Media Types <a href="#RFC2046" id="rfc.xref.RFC2046.1"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a> in the Content-Type (<a href="#header.content-type" id="rfc.xref.header.content-type.1" title="Content-Type">Section&nbsp;6.9</a>) and Accept (<a href="#header.accept" id="rfc.xref.header.accept.1" title="Accept">Section&nbsp;6.1</a>) header fields in order to provide open and extensible data typing and type negotiation.
     752      <p id="rfc.section.2.3.p.1">HTTP uses Internet Media Types <a href="#RFC2046" id="rfc.xref.RFC2046.1"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a> in the Content-Type (<a href="#header.content-type" id="rfc.xref.header.content-type.1" title="Content-Type">Section&nbsp;6.8</a>) and Accept (<a href="#header.accept" id="rfc.xref.header.accept.1" title="Accept">Section&nbsp;6.1</a>) header fields in order to provide open and extensible data typing and type negotiation.
    754753      </p>
    755754      <div id="rfc.figure.u.5"></div><pre class="inline"><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span><span id="rfc.iref.g.6"></span>  <a href="#media.types" class="smpl">media-type</a> = <a href="#media.types" class="smpl">type</a> "/" <a href="#media.types" class="smpl">subtype</a> *( <a href="#core.rules" class="smpl">OWS</a> ";" <a href="#core.rules" class="smpl">OWS</a> <a href="#rule.parameter" class="smpl">parameter</a> )
     
    847846               </tr>
    848847               <tr>
    849                   <td class="left">Content-MD5</td>
    850                   <td class="left"><a href="#header.content-md5" id="rfc.xref.header.content-md5.1" title="Content-MD5">Section&nbsp;6.8</a></td>
    851                </tr>
    852                <tr>
    853848                  <td class="left">Content-Range</td>
    854849                  <td class="left"><a href="p5-range.html#header.content-range" title="Content-Range">Section 5.2</a> of <a href="#Part5" id="rfc.xref.Part5.1"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a></td>
     
    905900               <tr>
    906901                  <td class="left">Content-Type</td>
    907                   <td class="left"><a href="#header.content-type" id="rfc.xref.header.content-type.2" title="Content-Type">Section&nbsp;6.9</a></td>
     902                  <td class="left"><a href="#header.content-type" id="rfc.xref.header.content-type.2" title="Content-Type">Section&nbsp;6.8</a></td>
    908903               </tr>
    909904               <tr>
     
    13161311      <div id="rfc.iref.c.10"></div>
    13171312      <div id="rfc.iref.h.8"></div>
    1318       <h2 id="rfc.section.6.8"><a href="#rfc.section.6.8">6.8</a>&nbsp;<a id="header.content-md5" href="#header.content-md5">Content-MD5</a></h2>
    1319       <p id="rfc.section.6.8.p.1">The "Content-MD5" header field, as defined in <a href="#RFC1864" id="rfc.xref.RFC1864.1"><cite title="The Content-MD5 Header Field">[RFC1864]</cite></a>, is an MD5 digest of the payload body that provides an end-to-end message integrity check (MIC) of the payload body (the
    1320          message-body after any transfer-coding is decoded). Note that a MIC is good for detecting accidental modification of the payload
    1321          body in transit, but is not proof against malicious attacks.
    1322       </p>
    1323       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.23"></span>  <a href="#header.content-md5" class="smpl">Content-MD5</a> = &lt;base64 of 128 bit MD5 digest as per <a href="#RFC1864" id="rfc.xref.RFC1864.2"><cite title="The Content-MD5 Header Field">[RFC1864]</cite></a>&gt;
    1324 </pre><p id="rfc.section.6.8.p.3">The Content-MD5 header field <em class="bcp14">MAY</em> be generated by an origin server or client to function as an integrity check of the payload body. Only origin servers or user
    1325          agents <em class="bcp14">MAY</em> generate the Content-MD5 header field; proxies <em class="bcp14">MUST NOT</em> generate it, as this would defeat its value as an end-to-end integrity check. Any recipient <em class="bcp14">MAY</em> check that the digest value in this header field matches a corresponding digest calculated on payload body as received.
    1326       </p>
    1327       <p id="rfc.section.6.8.p.4">The MD5 digest is computed based on the content of the payload body, including any content-coding, but not including any transfer-coding
    1328          applied to the message-body because such transfer-codings might be applied or removed anywhere along the request/response
    1329          chain. If the message is received with a transfer-coding, that encoding <em class="bcp14">MUST</em> be decoded prior to checking the Content-MD5 value against the received payload.
    1330       </p>
    1331       <p id="rfc.section.6.8.p.5">HTTP extends RFC 1864 to permit the digest to be computed for MIME composite media-types (e.g., multipart/* and message/rfc822),
    1332          but this does not change how the digest is computed as defined in the preceding paragraph.
    1333       </p>
    1334       <p id="rfc.section.6.8.p.6">There are several consequences of this. The payload for composite types <em class="bcp14">MAY</em> contain many body-parts, each with its own MIME and HTTP header fields (including Content-MD5, Content-Transfer-Encoding,
    1335          and Content-Encoding header fields). If a body-part has a Content-Transfer-Encoding or Content-Encoding header field, it is
    1336          assumed that the content of the body-part has had the encoding applied, and the body-part is included in the Content-MD5 digest
    1337          as is — i.e., after the application. The Transfer-Encoding header field is not allowed within body-parts.
    1338       </p>
    1339       <p id="rfc.section.6.8.p.7">Conversion of all line breaks to CRLF <em class="bcp14">MUST NOT</em> be done before computing or checking the digest: the line break convention used in the text actually transmitted <em class="bcp14">MUST</em> be left unaltered when computing the digest.
    1340       </p>
    1341       <div class="note" id="rfc.section.6.8.p.8">
    1342          <p> <b>Note:</b> While the definition of Content-MD5 is exactly the same for HTTP as in RFC 1864 for MIME entity-bodies, there are several
    1343             ways in which the application of Content-MD5 to HTTP entity-bodies differs from its application to MIME entity-bodies. One
    1344             is that HTTP, unlike MIME, does not use Content-Transfer-Encoding, and does use Transfer-Encoding and Content-Encoding. Another
    1345             is that HTTP more frequently uses binary content types than MIME, so it is worth noting that, in such cases, the byte order
    1346             used to compute the digest is the transmission byte order defined for the type. Lastly, HTTP allows transmission of text types
    1347             with any of several line break conventions and not just the canonical form using CRLF.
    1348          </p>
    1349       </div>
    1350       <div id="rfc.iref.c.11"></div>
    1351       <div id="rfc.iref.h.9"></div>
    1352       <h2 id="rfc.section.6.9"><a href="#rfc.section.6.9">6.9</a>&nbsp;<a id="header.content-type" href="#header.content-type">Content-Type</a></h2>
    1353       <p id="rfc.section.6.9.p.1">The "Content-Type" header field indicates the media type of the representation. In the case of responses to the HEAD method,
     1313      <h2 id="rfc.section.6.8"><a href="#rfc.section.6.8">6.8</a>&nbsp;<a id="header.content-type" href="#header.content-type">Content-Type</a></h2>
     1314      <p id="rfc.section.6.8.p.1">The "Content-Type" header field indicates the media type of the representation. In the case of responses to the HEAD method,
    13541315         the media type is that which would have been sent had the request been a GET.
    13551316      </p>
    1356       <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.24"></span>  <a href="#header.content-type" class="smpl">Content-Type</a> = <a href="#media.types" class="smpl">media-type</a>
    1357 </pre><p id="rfc.section.6.9.p.3">Media types are defined in <a href="#media.types" title="Media Types">Section&nbsp;2.3</a>. An example of the field is
    1358       </p>
    1359       <div id="rfc.figure.u.29"></div><pre class="text">  Content-Type: text/html; charset=ISO-8859-4
    1360 </pre><p id="rfc.section.6.9.p.5">Further discussion of Content-Type is provided in <a href="#representation.data" title="Representation Data">Section&nbsp;4.2</a>.
     1317      <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.23"></span>  <a href="#header.content-type" class="smpl">Content-Type</a> = <a href="#media.types" class="smpl">media-type</a>
     1318</pre><p id="rfc.section.6.8.p.3">Media types are defined in <a href="#media.types" title="Media Types">Section&nbsp;2.3</a>. An example of the field is
     1319      </p>
     1320      <div id="rfc.figure.u.28"></div><pre class="text">  Content-Type: text/html; charset=ISO-8859-4
     1321</pre><p id="rfc.section.6.8.p.5">Further discussion of Content-Type is provided in <a href="#representation.data" title="Representation Data">Section&nbsp;4.2</a>.
    13611322      </p>
    13621323      <h1 id="rfc.section.7"><a href="#rfc.section.7">7.</a>&nbsp;<a id="IANA.considerations" href="#IANA.considerations">IANA Considerations</a></h1>
     
    14261387               </tr>
    14271388               <tr>
    1428                   <td class="left">Content-MD5</td>
    1429                   <td class="left">http</td>
    1430                   <td class="left">standard</td>
    1431                   <td class="left"> <a href="#header.content-md5" id="rfc.xref.header.content-md5.2" title="Content-MD5">Section&nbsp;6.8</a>
    1432                   </td>
    1433                </tr>
    1434                <tr>
    14351389                  <td class="left">Content-Type</td>
    14361390                  <td class="left">http</td>
    14371391                  <td class="left">standard</td>
    1438                   <td class="left"> <a href="#header.content-type" id="rfc.xref.header.content-type.3" title="Content-Type">Section&nbsp;6.9</a>
     1392                  <td class="left"> <a href="#header.content-type" id="rfc.xref.header.content-type.3" title="Content-Type">Section&nbsp;6.8</a>
    14391393                  </td>
    14401394               </tr>
     
    15231477      <h2 id="rfc.references.1"><a href="#rfc.section.10.1" id="rfc.section.10.1">10.1</a> Normative References
    15241478      </h2>
    1525       <table>                             
     1479      <table>                           
    15261480         <tr>
    15271481            <td class="reference"><b id="Part1">[Part1]</b></td>
     
    15471501            <td class="reference"><b id="Part6">[Part6]</b></td>
    15481502            <td class="top"><a href="mailto:fielding@gbiv.com" title="Adobe Systems Incorporated">Fielding, R., Ed.</a>, <a href="mailto:jg@freedesktop.org" title="Alcatel-Lucent Bell Labs">Gettys, J.</a>, <a href="mailto:JeffMogul@acm.org" title="Hewlett-Packard Company">Mogul, J.</a>, <a href="mailto:henrikn@microsoft.com" title="Microsoft Corporation">Frystyk, H.</a>, <a href="mailto:LMM@acm.org" title="Adobe Systems Incorporated">Masinter, L.</a>, <a href="mailto:paulle@microsoft.com" title="Microsoft Corporation">Leach, P.</a>, <a href="mailto:timbl@w3.org" title="World Wide Web Consortium">Berners-Lee, T.</a>, <a href="mailto:ylafon@w3.org" title="World Wide Web Consortium">Lafon, Y., Ed.</a>, <a href="mailto:mnot@mnot.net">Nottingham, M., Ed.</a>, and <a href="mailto:julian.reschke@greenbytes.de" title="greenbytes GmbH">J. Reschke, Ed.</a>, “<a href="http://tools.ietf.org/html/draft-ietf-httpbis-p6-cache-latest">HTTP/1.1, part 6: Caching</a>”, Internet-Draft&nbsp;draft-ietf-httpbis-p6-cache-latest (work in progress), April&nbsp;2011.
    1549             </td>
    1550          </tr>
    1551          <tr>
    1552             <td class="reference"><b id="RFC1864">[RFC1864]</b></td>
    1553             <td class="top"><a href="mailto:jgm+@cmu.edu" title="Carnegie Mellon University">Myers, J.</a> and <a href="mailto:mrose@dbc.mtview.ca.us" title="Dover Beach Consulting, Inc.">M. Rose</a>, “<a href="http://tools.ietf.org/html/rfc1864">The Content-MD5 Header Field</a>”, RFC&nbsp;1864, October&nbsp;1995.
    15541503            </td>
    15551504         </tr>
     
    16051554      <h2 id="rfc.references.2"><a href="#rfc.section.10.2" id="rfc.section.10.2">10.2</a> Informative References
    16061555      </h2>
    1607       <table>                               
     1556      <table>                                 
    16081557         <tr>
    16091558            <td class="reference"><b id="BCP97">[BCP97]</b></td>
     
    16791628            <td class="reference"><b id="RFC5322">[RFC5322]</b></td>
    16801629            <td class="top">Resnick, P., “<a href="http://tools.ietf.org/html/rfc5322">Internet Message Format</a>”, RFC&nbsp;5322, October&nbsp;2008.
     1630            </td>
     1631         </tr>
     1632         <tr>
     1633            <td class="reference"><b id="RFC6151">[RFC6151]</b></td>
     1634            <td class="top">Turner, S. and L. Chen, “<a href="http://tools.ietf.org/html/rfc6151">Updated Security Considerations for the MD5 Message-Digest and the HMAC-MD5 Algorithms</a>”, RFC&nbsp;6151, March&nbsp;2011.
    16811635            </td>
    16821636         </tr>
     
    17151669      </p>
    17161670      <div id="rfc.iref.m.1"></div>
    1717       <div id="rfc.iref.h.10"></div>
     1671      <div id="rfc.iref.h.9"></div>
    17181672      <h2 id="rfc.section.A.1"><a href="#rfc.section.A.1">A.1</a>&nbsp;<a id="mime-version" href="#mime-version">MIME-Version</a></h2>
    17191673      <p id="rfc.section.A.1.p.1">HTTP is not a MIME-compliant protocol. However, HTTP/1.1 messages <em class="bcp14">MAY</em> include a single MIME-Version header field to indicate what version of the MIME protocol was used to construct the message.
     
    17211675         environments.
    17221676      </p>
    1723       <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.25"></span>  <a href="#mime-version" class="smpl">MIME-Version</a> = 1*<a href="#notation" class="smpl">DIGIT</a> "." 1*<a href="#notation" class="smpl">DIGIT</a>
     1677      <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.24"></span>  <a href="#mime-version" class="smpl">MIME-Version</a> = 1*<a href="#notation" class="smpl">DIGIT</a> "." 1*<a href="#notation" class="smpl">DIGIT</a>
    17241678</pre><p id="rfc.section.A.1.p.3">MIME version "1.0" is the default for use in HTTP/1.1. However, HTTP/1.1 message parsing and semantics are defined by this
    17251679         document and not the MIME specification.
     
    17771731      <p id="rfc.section.C.p.3">Change ABNF productions for header fields to only define the field value. (<a href="#header.fields" title="Header Field Definitions">Section&nbsp;6</a>)
    17781732      </p>
    1779       <p id="rfc.section.C.p.4">Remove ISO-8859-1 special-casing in Accept-Charset. (<a href="#header.accept-charset" id="rfc.xref.header.accept-charset.3" title="Accept-Charset">Section&nbsp;6.2</a>)
    1780       </p>
    1781       <p id="rfc.section.C.p.5">Remove base URI setting semantics for Content-Location due to poor implementation support, which was caused by too many broken
     1733      <p id="rfc.section.C.p.4">Remove definition of Content-MD5 header field because it was inconsistently implemented with respect to partial responses,
     1734         and also because of known deficiencies in the hash algorithm itself (see <a href="#RFC6151" id="rfc.xref.RFC6151.1"><cite title="Updated Security Considerations for the MD5 Message-Digest and the HMAC-MD5 Algorithms">[RFC6151]</cite></a> for details). (<a href="#header.fields" title="Header Field Definitions">Section&nbsp;6</a>)
     1735      </p>
     1736      <p id="rfc.section.C.p.5">Remove ISO-8859-1 special-casing in Accept-Charset. (<a href="#header.accept-charset" id="rfc.xref.header.accept-charset.3" title="Accept-Charset">Section&nbsp;6.2</a>)
     1737      </p>
     1738      <p id="rfc.section.C.p.6">Remove base URI setting semantics for Content-Location due to poor implementation support, which was caused by too many broken
    17821739         servers emitting bogus Content-Location header fields, and also the potentially undesirable effect of potentially breaking
    17831740         relative links in content-negotiated resources. (<a href="#header.content-location" id="rfc.xref.header.content-location.3" title="Content-Location">Section&nbsp;6.7</a>)
    17841741      </p>
    1785       <p id="rfc.section.C.p.6">Remove discussion of Content-Disposition header field, it is now defined by <a href="#draft-ietf-httpbis-content-disp" id="rfc.xref.draft-ietf-httpbis-content-disp.2"><cite title="Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)">[draft-ietf-httpbis-content-disp]</cite></a>. (<a href="#additional.features" title="Additional Features">Appendix&nbsp;B</a>)
    1786       </p>
    1787       <p id="rfc.section.C.p.7">Remove reference to non-existant identity transfer-coding value tokens. (<a href="#no.content-transfer-encoding" title="No Content-Transfer-Encoding">Appendix&nbsp;A.5</a>)
     1742      <p id="rfc.section.C.p.7">Remove discussion of Content-Disposition header field, it is now defined by <a href="#draft-ietf-httpbis-content-disp" id="rfc.xref.draft-ietf-httpbis-content-disp.2"><cite title="Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)">[draft-ietf-httpbis-content-disp]</cite></a>. (<a href="#additional.features" title="Additional Features">Appendix&nbsp;B</a>)
     1743      </p>
     1744      <p id="rfc.section.C.p.8">Remove reference to non-existant identity transfer-coding value tokens. (<a href="#no.content-transfer-encoding" title="No Content-Transfer-Encoding">Appendix&nbsp;A.5</a>)
    17881745      </p>
    17891746      <h1 id="rfc.section.D"><a href="#rfc.section.D">D.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
    1790       <div id="rfc.figure.u.31"></div> <pre class="inline"><a href="#header.accept" class="smpl">Accept</a> = [ ( "," / ( media-range [ accept-params ] ) ) *( OWS "," [
     1747      <div id="rfc.figure.u.30"></div> <pre class="inline"><a href="#header.accept" class="smpl">Accept</a> = [ ( "," / ( media-range [ accept-params ] ) ) *( OWS "," [
    17911748 OWS media-range [ accept-params ] ] ) ]
    17921749<a href="#header.accept-charset" class="smpl">Accept-Charset</a> = *( "," OWS ) ( charset / "*" ) [ OWS ";" OWS "q="
     
    18041761 language-tag ] )
    18051762<a href="#header.content-location" class="smpl">Content-Location</a> = absolute-URI / partial-URI
    1806 <a href="#header.content-md5" class="smpl">Content-MD5</a> = &lt;base64 of 128 bit MD5 digest as per [RFC1864]&gt;
    18071763<a href="#header.content-type" class="smpl">Content-Type</a> = media-type
    18081764
     
    18401796
    18411797<a href="#core.rules" class="smpl">word</a> = &lt;word, defined in [Part1], Section 1.2.2&gt;
    1842 </pre> <div id="rfc.figure.u.32"></div>
     1798</pre> <div id="rfc.figure.u.31"></div>
    18431799      <p>ABNF diagnostics:</p><pre class="inline">; Accept defined but not used
    18441800; Accept-Charset defined but not used
     
    18481804; Content-Language defined but not used
    18491805; Content-Location defined but not used
    1850 ; Content-MD5 defined but not used
    18511806; Content-Type defined but not used
    18521807; MIME-Version defined but not used
     
    20492004      <ul>
    20502005         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/20">http://tools.ietf.org/wg/httpbis/trac/ticket/20</a>&gt;: "Default charsets for text media types"
     2006         </li>
     2007         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/178">http://tools.ietf.org/wg/httpbis/trac/ticket/178</a>&gt;: "Content-MD5 and partial responses"
    20512008         </li>
    20522009         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/276">http://tools.ietf.org/wg/httpbis/trac/ticket/276</a>&gt;: "untangle ABNFs for header fields"
     
    20852042                  <li>Content-Language header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-language.1">4.1</a>, <a href="#rfc.iref.c.8"><b>6.6</b></a>, <a href="#rfc.xref.header.content-language.2">7.1</a></li>
    20862043                  <li>Content-Location header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-location.1">4.1</a>, <a href="#rfc.iref.c.9"><b>6.7</b></a>, <a href="#rfc.xref.header.content-location.2">7.1</a>, <a href="#rfc.xref.header.content-location.3">C</a></li>
    2087                   <li>Content-MD5 header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-md5.1">3.1</a>, <a href="#rfc.iref.c.10"><b>6.8</b></a>, <a href="#rfc.xref.header.content-md5.2">7.1</a></li>
    2088                   <li>Content-Type header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">2.3</a>, <a href="#rfc.xref.header.content-type.2">4.1</a>, <a href="#rfc.iref.c.11"><b>6.9</b></a>, <a href="#rfc.xref.header.content-type.3">7.1</a></li>
     2044                  <li>Content-Type header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">2.3</a>, <a href="#rfc.xref.header.content-type.2">4.1</a>, <a href="#rfc.iref.c.10"><b>6.8</b></a>, <a href="#rfc.xref.header.content-type.3">7.1</a></li>
    20892045               </ul>
    20902046            </li>
     
    21102066                        <li><tt>Content-Language</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.21"><b>6.6</b></a></li>
    21112067                        <li><tt>Content-Location</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.22"><b>6.7</b></a></li>
    2112                         <li><tt>Content-MD5</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.23"><b>6.8</b></a></li>
    2113                         <li><tt>Content-Type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.24"><b>6.9</b></a></li>
     2068                        <li><tt>Content-Type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.23"><b>6.8</b></a></li>
    21142069                        <li><tt>language-range</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.19"><b>6.4</b></a></li>
    21152070                        <li><tt>language-tag</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.10"><b>2.4</b></a></li>
    21162071                        <li><tt>media-range</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.12"><b>6.1</b></a></li>
    21172072                        <li><tt>media-type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.4"><b>2.3</b></a></li>
    2118                         <li><tt>MIME-Version</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.25"><b>A.1</b></a></li>
     2073                        <li><tt>MIME-Version</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.24"><b>A.1</b></a></li>
    21192074                        <li><tt>parameter</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.7"><b>2.3</b></a></li>
    21202075                        <li><tt>subtype</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.6"><b>2.3</b></a></li>
     
    21362091                        <li>Content-Language&nbsp;&nbsp;<a href="#rfc.xref.header.content-language.1">4.1</a>, <a href="#rfc.iref.h.6"><b>6.6</b></a>, <a href="#rfc.xref.header.content-language.2">7.1</a></li>
    21372092                        <li>Content-Location&nbsp;&nbsp;<a href="#rfc.xref.header.content-location.1">4.1</a>, <a href="#rfc.iref.h.7"><b>6.7</b></a>, <a href="#rfc.xref.header.content-location.2">7.1</a>, <a href="#rfc.xref.header.content-location.3">C</a></li>
    2138                         <li>Content-MD5&nbsp;&nbsp;<a href="#rfc.xref.header.content-md5.1">3.1</a>, <a href="#rfc.iref.h.8"><b>6.8</b></a>, <a href="#rfc.xref.header.content-md5.2">7.1</a></li>
    2139                         <li>Content-Type&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">2.3</a>, <a href="#rfc.xref.header.content-type.2">4.1</a>, <a href="#rfc.iref.h.9"><b>6.9</b></a>, <a href="#rfc.xref.header.content-type.3">7.1</a></li>
    2140                         <li>MIME-Version&nbsp;&nbsp;<a href="#rfc.xref.mime-version.1">7.1</a>, <a href="#rfc.iref.h.10"><b>A.1</b></a></li>
     2093                        <li>Content-Type&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">2.3</a>, <a href="#rfc.xref.header.content-type.2">4.1</a>, <a href="#rfc.iref.h.8"><b>6.8</b></a>, <a href="#rfc.xref.header.content-type.3">7.1</a></li>
     2094                        <li>MIME-Version&nbsp;&nbsp;<a href="#rfc.xref.mime-version.1">7.1</a>, <a href="#rfc.iref.h.9"><b>A.1</b></a></li>
    21412095                     </ul>
    21422096                  </li>
     
    21912145            <li><a id="rfc.index.R" href="#rfc.index.R"><b>R</b></a><ul>
    21922146                  <li>representation&nbsp;&nbsp;<a href="#rfc.iref.r.1">4</a></li>
    2193                   <li><em>RFC1864</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC1864.1">6.8</a>, <a href="#rfc.xref.RFC1864.2">6.8</a>, <a href="#RFC1864"><b>10.1</b></a></li>
    21942147                  <li><em>RFC1945</em>&nbsp;&nbsp;<a href="#RFC1945"><b>10.2</b></a>, <a href="#rfc.xref.RFC1945.1">B</a></li>
    21952148                  <li><em>RFC1950</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC1950.1">7.2</a>, <a href="#RFC1950"><b>10.1</b></a></li>
     
    22432196                     </ul>
    22442197                  </li>
     2198                  <li><em>RFC6151</em>&nbsp;&nbsp;<a href="#RFC6151"><b>10.2</b></a>, <a href="#rfc.xref.RFC6151.1">C</a></li>
    22452199               </ul>
    22462200            </li>
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