Ignore:
Timestamp:
Mar 30, 2012, 8:28:57 AM (7 years ago)
Author:
julian.reschke@…
Message:

Step 6 of p2/p3-merge (see #351)

Location:
draft-ietf-httpbis/latest
Files:
4 edited

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  • draft-ietf-httpbis/latest/p2-semantics.html

    r1643 r1644  
    487487      <link rel="Chapter" title="4 Status Codes" href="#rfc.section.4">
    488488      <link rel="Chapter" title="5 Representation" href="#rfc.section.5">
    489       <link rel="Chapter" title="6 Common Protocol Parameters" href="#rfc.section.6">
     489      <link rel="Chapter" title="6 Protocol Parameters" href="#rfc.section.6">
    490490      <link rel="Chapter" title="7 Header Field Definitions" href="#rfc.section.7">
    491491      <link rel="Chapter" title="8 IANA Considerations" href="#rfc.section.8">
     
    691691            </ul>
    692692         </li>
    693          <li>6.&nbsp;&nbsp;&nbsp;<a href="#common.protocol.parameters">Common Protocol Parameters</a><ul>
     693         <li>6.&nbsp;&nbsp;&nbsp;<a href="#protocol.parameters">Protocol Parameters</a><ul>
    694694               <li>6.1&nbsp;&nbsp;&nbsp;<a href="#http.date">Date/Time Formats</a></li>
    695695               <li>6.2&nbsp;&nbsp;&nbsp;<a href="#product.tokens">Product Tokens</a></li>
     696               <li>6.3&nbsp;&nbsp;&nbsp;<a href="#character.sets">Character Encodings (charset)</a></li>
     697               <li>6.4&nbsp;&nbsp;&nbsp;<a href="#content.codings">Content Codings</a><ul>
     698                     <li>6.4.1&nbsp;&nbsp;&nbsp;<a href="#content.coding.registry">Content Coding Registry</a></li>
     699                  </ul>
     700               </li>
     701               <li>6.5&nbsp;&nbsp;&nbsp;<a href="#media.types">Media Types</a><ul>
     702                     <li>6.5.1&nbsp;&nbsp;&nbsp;<a href="#canonicalization.and.text.defaults">Canonicalization and Text Defaults</a></li>
     703                     <li>6.5.2&nbsp;&nbsp;&nbsp;<a href="#multipart.types">Multipart Types</a></li>
     704                  </ul>
     705               </li>
     706               <li>6.6&nbsp;&nbsp;&nbsp;<a href="#language.tags">Language Tags</a></li>
    696707            </ul>
    697708         </li>
     
    756767         </li>
    757768         <li>D.&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D">THE TEXT FORMERLY KNOWN AS PART3</a><ul>
    758                <li>D.1&nbsp;&nbsp;&nbsp;<a href="#protocol.parameters">Protocol Parameters</a><ul>
    759                      <li>D.1.1&nbsp;&nbsp;&nbsp;<a href="#character.sets">Character Encodings (charset)</a></li>
    760                      <li>D.1.2&nbsp;&nbsp;&nbsp;<a href="#content.codings">Content Codings</a><ul>
    761                            <li>D.1.2.1&nbsp;&nbsp;&nbsp;<a href="#content.coding.registry">Content Coding Registry</a></li>
    762                         </ul>
    763                      </li>
    764                      <li>D.1.3&nbsp;&nbsp;&nbsp;<a href="#media.types">Media Types</a><ul>
    765                            <li>D.1.3.1&nbsp;&nbsp;&nbsp;<a href="#canonicalization.and.text.defaults">Canonicalization and Text Defaults</a></li>
    766                            <li>D.1.3.2&nbsp;&nbsp;&nbsp;<a href="#multipart.types">Multipart Types</a></li>
    767                         </ul>
    768                      </li>
    769                      <li>D.1.4&nbsp;&nbsp;&nbsp;<a href="#language.tags">Language Tags</a></li>
     769               <li>D.1&nbsp;&nbsp;&nbsp;<a href="#payload">Payload</a><ul>
     770                     <li>D.1.1&nbsp;&nbsp;&nbsp;<a href="#payload.header.fields">Payload Header Fields</a></li>
     771                     <li>D.1.2&nbsp;&nbsp;&nbsp;<a href="#payload.body">Payload Body</a></li>
    770772                  </ul>
    771773               </li>
    772                <li>D.2&nbsp;&nbsp;&nbsp;<a href="#payload">Payload</a><ul>
    773                      <li>D.2.1&nbsp;&nbsp;&nbsp;<a href="#payload.header.fields">Payload Header Fields</a></li>
    774                      <li>D.2.2&nbsp;&nbsp;&nbsp;<a href="#payload.body">Payload Body</a></li>
     774               <li>D.2&nbsp;&nbsp;&nbsp;<a href="#representation3">Representation</a><ul>
     775                     <li>D.2.1&nbsp;&nbsp;&nbsp;<a href="#representation.header.fields">Representation Header Fields</a></li>
     776                     <li>D.2.2&nbsp;&nbsp;&nbsp;<a href="#representation.data">Representation Data</a></li>
    775777                  </ul>
    776778               </li>
    777                <li>D.3&nbsp;&nbsp;&nbsp;<a href="#representation3">Representation</a><ul>
    778                      <li>D.3.1&nbsp;&nbsp;&nbsp;<a href="#representation.header.fields">Representation Header Fields</a></li>
    779                      <li>D.3.2&nbsp;&nbsp;&nbsp;<a href="#representation.data">Representation Data</a></li>
     779               <li>D.3&nbsp;&nbsp;&nbsp;<a href="#content.negotiation">Content Negotiation</a><ul>
     780                     <li>D.3.1&nbsp;&nbsp;&nbsp;<a href="#server-driven.negotiation">Server-driven Negotiation</a></li>
     781                     <li>D.3.2&nbsp;&nbsp;&nbsp;<a href="#agent-driven.negotiation">Agent-driven Negotiation</a></li>
    780782                  </ul>
    781783               </li>
    782                <li>D.4&nbsp;&nbsp;&nbsp;<a href="#content.negotiation">Content Negotiation</a><ul>
    783                      <li>D.4.1&nbsp;&nbsp;&nbsp;<a href="#server-driven.negotiation">Server-driven Negotiation</a></li>
    784                      <li>D.4.2&nbsp;&nbsp;&nbsp;<a href="#agent-driven.negotiation">Agent-driven Negotiation</a></li>
     784               <li>D.4&nbsp;&nbsp;&nbsp;<a href="#header.field.definitions3">Header Field Definitions</a><ul>
     785                     <li>D.4.1&nbsp;&nbsp;&nbsp;<a href="#header.accept">Accept</a></li>
     786                     <li>D.4.2&nbsp;&nbsp;&nbsp;<a href="#header.accept-charset">Accept-Charset</a></li>
     787                     <li>D.4.3&nbsp;&nbsp;&nbsp;<a href="#header.accept-encoding">Accept-Encoding</a></li>
     788                     <li>D.4.4&nbsp;&nbsp;&nbsp;<a href="#header.accept-language">Accept-Language</a></li>
     789                     <li>D.4.5&nbsp;&nbsp;&nbsp;<a href="#header.content-encoding">Content-Encoding</a></li>
     790                     <li>D.4.6&nbsp;&nbsp;&nbsp;<a href="#header.content-language">Content-Language</a></li>
     791                     <li>D.4.7&nbsp;&nbsp;&nbsp;<a href="#header.content-location">Content-Location</a></li>
     792                     <li>D.4.8&nbsp;&nbsp;&nbsp;<a href="#header.content-type">Content-Type</a></li>
    785793                  </ul>
    786794               </li>
    787                <li>D.5&nbsp;&nbsp;&nbsp;<a href="#header.field.definitions3">Header Field Definitions</a><ul>
    788                      <li>D.5.1&nbsp;&nbsp;&nbsp;<a href="#header.accept">Accept</a></li>
    789                      <li>D.5.2&nbsp;&nbsp;&nbsp;<a href="#header.accept-charset">Accept-Charset</a></li>
    790                      <li>D.5.3&nbsp;&nbsp;&nbsp;<a href="#header.accept-encoding">Accept-Encoding</a></li>
    791                      <li>D.5.4&nbsp;&nbsp;&nbsp;<a href="#header.accept-language">Accept-Language</a></li>
    792                      <li>D.5.5&nbsp;&nbsp;&nbsp;<a href="#header.content-encoding">Content-Encoding</a></li>
    793                      <li>D.5.6&nbsp;&nbsp;&nbsp;<a href="#header.content-language">Content-Language</a></li>
    794                      <li>D.5.7&nbsp;&nbsp;&nbsp;<a href="#header.content-location">Content-Location</a></li>
    795                      <li>D.5.8&nbsp;&nbsp;&nbsp;<a href="#header.content-type">Content-Type</a></li>
     795               <li>D.5&nbsp;&nbsp;&nbsp;<a href="#IANA.considerations3">IANA Considerations</a><ul>
     796                     <li>D.5.1&nbsp;&nbsp;&nbsp;<a href="#content.coding.registration">Content Coding Registry</a></li>
    796797                  </ul>
    797798               </li>
    798                <li>D.6&nbsp;&nbsp;&nbsp;<a href="#IANA.considerations3">IANA Considerations</a><ul>
    799                      <li>D.6.1&nbsp;&nbsp;&nbsp;<a href="#content.coding.registration">Content Coding Registry</a></li>
     799               <li>D.6&nbsp;&nbsp;&nbsp;<a href="#security.considerations3">Security Considerations</a><ul>
     800                     <li>D.6.1&nbsp;&nbsp;&nbsp;<a href="#privacy.issues.connected.to.accept.header.fields">Privacy Issues Connected to Accept Header Fields</a></li>
    800801                  </ul>
    801802               </li>
    802                <li>D.7&nbsp;&nbsp;&nbsp;<a href="#security.considerations3">Security Considerations</a><ul>
    803                      <li>D.7.1&nbsp;&nbsp;&nbsp;<a href="#privacy.issues.connected.to.accept.header.fields">Privacy Issues Connected to Accept Header Fields</a></li>
     803               <li>D.7&nbsp;&nbsp;&nbsp;<a href="#differences.between.http.and.mime">Differences between HTTP and MIME</a><ul>
     804                     <li>D.7.1&nbsp;&nbsp;&nbsp;<a href="#mime-version">MIME-Version</a></li>
     805                     <li>D.7.2&nbsp;&nbsp;&nbsp;<a href="#conversion.to.canonical.form">Conversion to Canonical Form</a></li>
     806                     <li>D.7.3&nbsp;&nbsp;&nbsp;<a href="#conversion.of.date.formats">Conversion of Date Formats</a></li>
     807                     <li>D.7.4&nbsp;&nbsp;&nbsp;<a href="#introduction.of.content-encoding">Introduction of Content-Encoding</a></li>
     808                     <li>D.7.5&nbsp;&nbsp;&nbsp;<a href="#no.content-transfer-encoding">No Content-Transfer-Encoding</a></li>
     809                     <li>D.7.6&nbsp;&nbsp;&nbsp;<a href="#introduction.of.transfer-encoding">Introduction of Transfer-Encoding</a></li>
     810                     <li>D.7.7&nbsp;&nbsp;&nbsp;<a href="#mhtml.line.length">MHTML and Line Length Limitations</a></li>
    804811                  </ul>
    805812               </li>
    806                <li>D.8&nbsp;&nbsp;&nbsp;<a href="#differences.between.http.and.mime">Differences between HTTP and MIME</a><ul>
    807                      <li>D.8.1&nbsp;&nbsp;&nbsp;<a href="#mime-version">MIME-Version</a></li>
    808                      <li>D.8.2&nbsp;&nbsp;&nbsp;<a href="#conversion.to.canonical.form">Conversion to Canonical Form</a></li>
    809                      <li>D.8.3&nbsp;&nbsp;&nbsp;<a href="#conversion.of.date.formats">Conversion of Date Formats</a></li>
    810                      <li>D.8.4&nbsp;&nbsp;&nbsp;<a href="#introduction.of.content-encoding">Introduction of Content-Encoding</a></li>
    811                      <li>D.8.5&nbsp;&nbsp;&nbsp;<a href="#no.content-transfer-encoding">No Content-Transfer-Encoding</a></li>
    812                      <li>D.8.6&nbsp;&nbsp;&nbsp;<a href="#introduction.of.transfer-encoding">Introduction of Transfer-Encoding</a></li>
    813                      <li>D.8.7&nbsp;&nbsp;&nbsp;<a href="#mhtml.line.length">MHTML and Line Length Limitations</a></li>
    814                   </ul>
    815                </li>
    816                <li>D.9&nbsp;&nbsp;&nbsp;<a href="#additional.features">Additional Features</a></li>
    817                <li>D.10&nbsp;&nbsp;&nbsp;<a href="#changes.from.rfc.2616-3">Changes from RFC 2616</a></li>
    818                <li>D.11&nbsp;&nbsp;&nbsp;<a href="#change.log3">Change Log (to be removed by RFC Editor before publication)</a><ul>
    819                      <li>D.11.1&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D.11.1">Since RFC 2616</a></li>
    820                      <li>D.11.2&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D.11.2">Since draft-ietf-httpbis-p3-payload-00</a></li>
    821                      <li>D.11.3&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D.11.3">Since draft-ietf-httpbis-p3-payload-01</a></li>
    822                      <li>D.11.4&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.02">Since draft-ietf-httpbis-p3-payload-02</a></li>
    823                      <li>D.11.5&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.03">Since draft-ietf-httpbis-p3-payload-03</a></li>
    824                      <li>D.11.6&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.04">Since draft-ietf-httpbis-p3-payload-04</a></li>
    825                      <li>D.11.7&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.05">Since draft-ietf-httpbis-p3-payload-05</a></li>
    826                      <li>D.11.8&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.06">Since draft-ietf-httpbis-p3-payload-06</a></li>
    827                      <li>D.11.9&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.07">Since draft-ietf-httpbis-p3-payload-07</a></li>
    828                      <li>D.11.10&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.08">Since draft-ietf-httpbis-p3-payload-08</a></li>
    829                      <li>D.11.11&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.09">Since draft-ietf-httpbis-p3-payload-09</a></li>
    830                      <li>D.11.12&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.10">Since draft-ietf-httpbis-p3-payload-10</a></li>
    831                      <li>D.11.13&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.11">Since draft-ietf-httpbis-p3-payload-11</a></li>
    832                      <li>D.11.14&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.12">Since draft-ietf-httpbis-p3-payload-12</a></li>
    833                      <li>D.11.15&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.13">Since draft-ietf-httpbis-p3-payload-13</a></li>
    834                      <li>D.11.16&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.14">Since draft-ietf-httpbis-p3-payload-14</a></li>
    835                      <li>D.11.17&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.15">Since draft-ietf-httpbis-p3-payload-15</a></li>
    836                      <li>D.11.18&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.16">Since draft-ietf-httpbis-p3-payload-16</a></li>
    837                      <li>D.11.19&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.17">Since draft-ietf-httpbis-p3-payload-17</a></li>
    838                      <li>D.11.20&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.18">Since draft-ietf-httpbis-p3-payload-18</a></li>
    839                      <li>D.11.21&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.19">Since draft-ietf-httpbis-p3-payload-19</a></li>
     813               <li>D.8&nbsp;&nbsp;&nbsp;<a href="#additional.features">Additional Features</a></li>
     814               <li>D.9&nbsp;&nbsp;&nbsp;<a href="#changes.from.rfc.2616-3">Changes from RFC 2616</a></li>
     815               <li>D.10&nbsp;&nbsp;&nbsp;<a href="#change.log3">Change Log (to be removed by RFC Editor before publication)</a><ul>
     816                     <li>D.10.1&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D.10.1">Since RFC 2616</a></li>
     817                     <li>D.10.2&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D.10.2">Since draft-ietf-httpbis-p3-payload-00</a></li>
     818                     <li>D.10.3&nbsp;&nbsp;&nbsp;<a href="#rfc.section.D.10.3">Since draft-ietf-httpbis-p3-payload-01</a></li>
     819                     <li>D.10.4&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.02">Since draft-ietf-httpbis-p3-payload-02</a></li>
     820                     <li>D.10.5&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.03">Since draft-ietf-httpbis-p3-payload-03</a></li>
     821                     <li>D.10.6&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.04">Since draft-ietf-httpbis-p3-payload-04</a></li>
     822                     <li>D.10.7&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.05">Since draft-ietf-httpbis-p3-payload-05</a></li>
     823                     <li>D.10.8&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.06">Since draft-ietf-httpbis-p3-payload-06</a></li>
     824                     <li>D.10.9&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.07">Since draft-ietf-httpbis-p3-payload-07</a></li>
     825                     <li>D.10.10&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.08">Since draft-ietf-httpbis-p3-payload-08</a></li>
     826                     <li>D.10.11&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.09">Since draft-ietf-httpbis-p3-payload-09</a></li>
     827                     <li>D.10.12&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.10">Since draft-ietf-httpbis-p3-payload-10</a></li>
     828                     <li>D.10.13&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.11">Since draft-ietf-httpbis-p3-payload-11</a></li>
     829                     <li>D.10.14&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.12">Since draft-ietf-httpbis-p3-payload-12</a></li>
     830                     <li>D.10.15&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.13">Since draft-ietf-httpbis-p3-payload-13</a></li>
     831                     <li>D.10.16&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.14">Since draft-ietf-httpbis-p3-payload-14</a></li>
     832                     <li>D.10.17&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.15">Since draft-ietf-httpbis-p3-payload-15</a></li>
     833                     <li>D.10.18&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.16">Since draft-ietf-httpbis-p3-payload-16</a></li>
     834                     <li>D.10.19&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.17">Since draft-ietf-httpbis-p3-payload-17</a></li>
     835                     <li>D.10.20&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.18">Since draft-ietf-httpbis-p3-payload-18</a></li>
     836                     <li>D.10.21&nbsp;&nbsp;&nbsp;<a href="#changes.3.since.19">Since draft-ietf-httpbis-p3-payload-19</a></li>
    840837                  </ul>
    841838               </li>
     
    10611058         a Location header field (see <a href="#header.location" id="rfc.xref.header.location.1" title="Location">Section&nbsp;7.5</a>).
    10621059      </p>
    1063       <p id="rfc.section.2.3.4.p.5">Responses to POST requests are only cacheable when they include explicit freshness information (see <a href="p6-cache.html#calculating.freshness.lifetime" title="Calculating Freshness Lifetime">Section 2.3.1</a> of <a href="#Part6" id="rfc.xref.Part6.4"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>). A cached POST response with a Content-Location header field (see <a href="#header.content-location" id="rfc.xref.header.content-location.1" title="Content-Location">Appendix&nbsp;D.5.7</a>) whose value is the effective Request URI <em class="bcp14">MAY</em> be used to satisfy subsequent GET and HEAD requests.
     1060      <p id="rfc.section.2.3.4.p.5">Responses to POST requests are only cacheable when they include explicit freshness information (see <a href="p6-cache.html#calculating.freshness.lifetime" title="Calculating Freshness Lifetime">Section 2.3.1</a> of <a href="#Part6" id="rfc.xref.Part6.4"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>). A cached POST response with a Content-Location header field (see <a href="#header.content-location" id="rfc.xref.header.content-location.1" title="Content-Location">Appendix&nbsp;D.4.7</a>) whose value is the effective Request URI <em class="bcp14">MAY</em> be used to satisfy subsequent GET and HEAD requests.
    10641061      </p>
    10651062      <p id="rfc.section.2.3.4.p.6">Note that POST caching is not widely implemented. However, the 303 (See Other) response can be used to direct the user agent
     
    12241221         double quotes will likely cause unnecessary confusion.
    12251222      </p>
    1226       <p id="rfc.section.3.1.p.8">Many header fields use a format including (case-insensitively) named parameters (for instance, Content-Type, defined in <a href="#header.content-type" id="rfc.xref.header.content-type.1" title="Content-Type">Appendix&nbsp;D.5.8</a>). Allowing both unquoted (token) and quoted (quoted-string) syntax for the parameter value enables recipients to use existing
     1223      <p id="rfc.section.3.1.p.8">Many header fields use a format including (case-insensitively) named parameters (for instance, Content-Type, defined in <a href="#header.content-type" id="rfc.xref.header.content-type.1" title="Content-Type">Appendix&nbsp;D.4.8</a>). Allowing both unquoted (token) and quoted (quoted-string) syntax for the parameter value enables recipients to use existing
    12271224         parser components. When allowing both forms, the meaning of a parameter value ought to be independent of the syntax used for
    1228          it (for an example, see the notes on parameter handling for media types in <a href="#media.types" title="Media Types">Appendix&nbsp;D.1.3</a>).
     1225         it (for an example, see the notes on parameter handling for media types in <a href="#media.types" title="Media Types">Section&nbsp;6.5</a>).
    12291226      </p>
    12301227      <p id="rfc.section.3.1.p.9">Authors of specifications defining new header fields are advised to consider documenting: </p>
     
    12811278               <tr>
    12821279                  <td class="left">Accept</td>
    1283                   <td class="left"><a href="#header.accept" id="rfc.xref.header.accept.1" title="Accept">Appendix&nbsp;D.5.1</a></td>
     1280                  <td class="left"><a href="#header.accept" id="rfc.xref.header.accept.1" title="Accept">Appendix&nbsp;D.4.1</a></td>
    12841281               </tr>
    12851282               <tr>
    12861283                  <td class="left">Accept-Charset</td>
    1287                   <td class="left"><a href="#header.accept-charset" id="rfc.xref.header.accept-charset.1" title="Accept-Charset">Appendix&nbsp;D.5.2</a></td>
     1284                  <td class="left"><a href="#header.accept-charset" id="rfc.xref.header.accept-charset.1" title="Accept-Charset">Appendix&nbsp;D.4.2</a></td>
    12881285               </tr>
    12891286               <tr>
    12901287                  <td class="left">Accept-Encoding</td>
    1291                   <td class="left"><a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.1" title="Accept-Encoding">Appendix&nbsp;D.5.3</a></td>
     1288                  <td class="left"><a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.1" title="Accept-Encoding">Appendix&nbsp;D.4.3</a></td>
    12921289               </tr>
    12931290               <tr>
    12941291                  <td class="left">Accept-Language</td>
    1295                   <td class="left"><a href="#header.accept-language" id="rfc.xref.header.accept-language.1" title="Accept-Language">Appendix&nbsp;D.5.4</a></td>
     1292                  <td class="left"><a href="#header.accept-language" id="rfc.xref.header.accept-language.1" title="Accept-Language">Appendix&nbsp;D.4.4</a></td>
    12961293               </tr>
    12971294               <tr>
     
    14371434      </ul>
    14381435      <p id="rfc.section.4.p.4">For most status codes the response can carry a payload, in which case a Content-Type header field indicates the payload's
    1439          media type (<a href="#header.content-type" id="rfc.xref.header.content-type.2" title="Content-Type">Appendix&nbsp;D.5.8</a>).
     1436         media type (<a href="#header.content-type" id="rfc.xref.header.content-type.2" title="Content-Type">Appendix&nbsp;D.4.8</a>).
    14401437      </p>
    14411438      <h2 id="rfc.section.4.1"><a href="#rfc.section.4.1">4.1</a>&nbsp;<a id="overview.of.status.codes" href="#overview.of.status.codes">Overview of Status Codes</a></h2>
     
    18161813         </li>
    18171814         <li>
    1818             <p>Redirection offering a choice of matching resources for use by agent-driven content negotiation (<a href="#agent-driven.negotiation" title="Agent-driven Negotiation">Appendix&nbsp;D.4.2</a>). This is status code 300 (Multiple Choices).
     1815            <p>Redirection offering a choice of matching resources for use by agent-driven content negotiation (<a href="#agent-driven.negotiation" title="Agent-driven Negotiation">Appendix&nbsp;D.3.2</a>). This is status code 300 (Multiple Choices).
    18191816            </p>
    18201817         </li>
     
    18481845      <h3 id="rfc.section.4.5.1"><a href="#rfc.section.4.5.1">4.5.1</a>&nbsp;<a id="status.300" href="#status.300">300 Multiple Choices</a></h3>
    18491846      <p id="rfc.section.4.5.1.p.1">The target resource has more than one representation, each with its own specific location, and agent-driven negotiation information
    1850          (<a href="#content.negotiation" title="Content Negotiation">Appendix&nbsp;D.4</a>) is being provided so that the user (or user agent) can select a preferred representation by redirecting its request to that
     1847         (<a href="#content.negotiation" title="Content Negotiation">Appendix&nbsp;D.3</a>) is being provided so that the user (or user agent) can select a preferred representation by redirecting its request to that
    18511848         location.
    18521849      </p>
     
    21512148            cache invalidation.]</span>
    21522149      </p>
    2153       <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="common.protocol.parameters" href="#common.protocol.parameters">Common Protocol Parameters</a></h1>
     2150      <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="protocol.parameters" href="#protocol.parameters">Protocol Parameters</a></h1>
    21542151      <h2 id="rfc.section.6.1"><a href="#rfc.section.6.1">6.1</a>&nbsp;<a id="http.date" href="#http.date">Date/Time Formats</a></h2>
    21552152      <p id="rfc.section.6.1.p.1">HTTP applications have historically allowed three different formats for date/time stamps. However, the preferred format is
     
    22502247</pre><p id="rfc.section.6.2.p.5">Product tokens <em class="bcp14">SHOULD</em> be short and to the point. They <em class="bcp14">MUST NOT</em> be used for advertising or other non-essential information. Although any token octet <em class="bcp14">MAY</em> appear in a product-version, this token <em class="bcp14">SHOULD</em> only be used for a version identifier (i.e., successive versions of the same product <em class="bcp14">SHOULD</em> only differ in the product-version portion of the product value).
    22512248      </p>
     2249      <h2 id="rfc.section.6.3"><a href="#rfc.section.6.3">6.3</a>&nbsp;<a id="character.sets" href="#character.sets">Character Encodings (charset)</a></h2>
     2250      <p id="rfc.section.6.3.p.1">HTTP uses charset names to indicate the character encoding of a textual representation.</p>
     2251      <div id="rule.charset">
     2252         <p id="rfc.section.6.3.p.2">  A character encoding is identified by a case-insensitive token. The complete set of tokens is defined by the IANA Character
     2253            Set registry (&lt;<a href="http://www.iana.org/assignments/character-sets">http://www.iana.org/assignments/character-sets</a>&gt;).
     2254         </p>
     2255      </div>
     2256      <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.21"></span>  <a href="#rule.charset" class="smpl">charset</a> = <a href="#core.rules" class="smpl">token</a>
     2257</pre><p id="rfc.section.6.3.p.4">Although HTTP allows an arbitrary token to be used as a charset value, any token that has a predefined value within the IANA
     2258         Character Set registry <em class="bcp14">MUST</em> represent the character encoding defined by that registry. Applications <em class="bcp14">SHOULD</em> limit their use of character encodings to those defined within the IANA registry.
     2259      </p>
     2260      <p id="rfc.section.6.3.p.5">HTTP uses charset in two contexts: within an Accept-Charset request header field (in which the charset value is an unquoted
     2261         token) and as the value of a parameter in a Content-Type header field (within a request or response), in which case the parameter
     2262         value of the charset parameter can be quoted.
     2263      </p>
     2264      <p id="rfc.section.6.3.p.6">Implementors need to be aware of IETF character set requirements <a href="#RFC3629" id="rfc.xref.RFC3629.1"><cite title="UTF-8, a transformation format of ISO 10646">[RFC3629]</cite></a>  <a href="#RFC2277" id="rfc.xref.RFC2277.1"><cite title="IETF Policy on Character Sets and Languages">[RFC2277]</cite></a>.
     2265      </p>
     2266      <h2 id="rfc.section.6.4"><a href="#rfc.section.6.4">6.4</a>&nbsp;<a id="content.codings" href="#content.codings">Content Codings</a></h2>
     2267      <p id="rfc.section.6.4.p.1">Content coding values indicate an encoding transformation that has been or can be applied to a representation. Content codings
     2268         are primarily used to allow a representation to be compressed or otherwise usefully transformed without losing the identity
     2269         of its underlying media type and without loss of information. Frequently, the representation is stored in coded form, transmitted
     2270         directly, and only decoded by the recipient.
     2271      </p>
     2272      <div id="rfc.figure.u.18"></div><pre class="inline"><span id="rfc.iref.g.22"></span>  <a href="#content.codings" class="smpl">content-coding</a>   = <a href="#core.rules" class="smpl">token</a>
     2273</pre><p id="rfc.section.6.4.p.3">All content-coding values are case-insensitive. HTTP/1.1 uses content-coding values in the Accept-Encoding (<a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.2" title="Accept-Encoding">Appendix&nbsp;D.4.3</a>) and Content-Encoding (<a href="#header.content-encoding" id="rfc.xref.header.content-encoding.1" title="Content-Encoding">Appendix&nbsp;D.4.5</a>) header fields. Although the value describes the content-coding, what is more important is that it indicates what decoding
     2274         mechanism will be required to remove the encoding.
     2275      </p>
     2276      <p id="rfc.section.6.4.p.4">compress<span id="rfc.iref.c.3"></span><span id="rfc.iref.c.4"></span> 
     2277      </p>
     2278      <ul class="empty">
     2279         <li>See <a href="p1-messaging.html#compress.coding" title="Compress Coding">Section 4.2.1</a> of <a href="#Part1" id="rfc.xref.Part1.39"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
     2280         </li>
     2281      </ul>
     2282      <p id="rfc.section.6.4.p.5">deflate<span id="rfc.iref.d.2"></span><span id="rfc.iref.c.5"></span> 
     2283      </p>
     2284      <ul class="empty">
     2285         <li>See <a href="p1-messaging.html#deflate.coding" title="Deflate Coding">Section 4.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.40"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
     2286         </li>
     2287      </ul>
     2288      <p id="rfc.section.6.4.p.6">gzip<span id="rfc.iref.g.23"></span><span id="rfc.iref.c.6"></span> 
     2289      </p>
     2290      <ul class="empty">
     2291         <li>See <a href="p1-messaging.html#gzip.coding" title="Gzip Coding">Section 4.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.41"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
     2292         </li>
     2293      </ul>
     2294      <h3 id="rfc.section.6.4.1"><a href="#rfc.section.6.4.1">6.4.1</a>&nbsp;<a id="content.coding.registry" href="#content.coding.registry">Content Coding Registry</a></h3>
     2295      <p id="rfc.section.6.4.1.p.1">The HTTP Content Coding Registry defines the name space for the content coding names.</p>
     2296      <p id="rfc.section.6.4.1.p.2">Registrations <em class="bcp14">MUST</em> include the following fields:
     2297      </p>
     2298      <ul>
     2299         <li>Name</li>
     2300         <li>Description</li>
     2301         <li>Pointer to specification text</li>
     2302      </ul>
     2303      <p id="rfc.section.6.4.1.p.3">Names of content codings <em class="bcp14">MUST NOT</em> overlap with names of transfer codings (<a href="p1-messaging.html#transfer.codings" title="Transfer Codings">Section 4</a> of <a href="#Part1" id="rfc.xref.Part1.42"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>), unless the encoding transformation is identical (as is the case for the compression codings defined in <a href="p1-messaging.html#compression.codings" title="Compression Codings">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.43"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
     2304      </p>
     2305      <p id="rfc.section.6.4.1.p.4">Values to be added to this name space require IETF Review (see <a href="http://tools.ietf.org/html/rfc5226#section-4.1">Section 4.1</a> of <a href="#RFC5226" id="rfc.xref.RFC5226.3"><cite title="Guidelines for Writing an IANA Considerations Section in RFCs">[RFC5226]</cite></a>), and <em class="bcp14">MUST</em> conform to the purpose of content coding defined in this section.
     2306      </p>
     2307      <p id="rfc.section.6.4.1.p.5">The registry itself is maintained at &lt;<a href="http://www.iana.org/assignments/http-parameters">http://www.iana.org/assignments/http-parameters</a>&gt;.
     2308      </p>
     2309      <h2 id="rfc.section.6.5"><a href="#rfc.section.6.5">6.5</a>&nbsp;<a id="media.types" href="#media.types">Media Types</a></h2>
     2310      <p id="rfc.section.6.5.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.3" title="Content-Type">Appendix&nbsp;D.4.8</a>) and Accept (<a href="#header.accept" id="rfc.xref.header.accept.2" title="Accept">Appendix&nbsp;D.4.1</a>) header fields in order to provide open and extensible data typing and type negotiation.
     2311      </p>
     2312      <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.24"></span><span id="rfc.iref.g.25"></span><span id="rfc.iref.g.26"></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> )
     2313  <a href="#media.types" class="smpl">type</a>       = <a href="#core.rules" class="smpl">token</a>
     2314  <a href="#media.types" class="smpl">subtype</a>    = <a href="#core.rules" class="smpl">token</a>
     2315</pre><div id="rule.parameter">
     2316         <p id="rfc.section.6.5.p.3">      The type/subtype <em class="bcp14">MAY</em> be followed by parameters in the form of attribute/value pairs.
     2317         </p>
     2318      </div>
     2319      <div id="rfc.figure.u.20"></div><pre class="inline"><span id="rfc.iref.g.27"></span><span id="rfc.iref.g.28"></span><span id="rfc.iref.g.29"></span>  <a href="#rule.parameter" class="smpl">parameter</a>      = <a href="#rule.parameter" class="smpl">attribute</a> "=" <a href="#rule.parameter" class="smpl">value</a>
     2320  <a href="#rule.parameter" class="smpl">attribute</a>      = <a href="#core.rules" class="smpl">token</a>
     2321  <a href="#rule.parameter" class="smpl">value</a>          = <a href="#core.rules" class="smpl">word</a>
     2322</pre><p id="rfc.section.6.5.p.5">The type, subtype, and parameter attribute names are case-insensitive. Parameter values might or might not be case-sensitive,
     2323         depending on the semantics of the parameter name. The presence or absence of a parameter might be significant to the processing
     2324         of a media-type, depending on its definition within the media type registry.
     2325      </p>
     2326      <p id="rfc.section.6.5.p.6">A parameter value that matches the <a href="#core.rules" class="smpl">token</a> production can be transmitted as either a token or within a quoted-string. The quoted and unquoted values are equivalent.
     2327      </p>
     2328      <p id="rfc.section.6.5.p.7">Note that some older HTTP applications do not recognize media type parameters. When sending data to older HTTP applications,
     2329         implementations <em class="bcp14">SHOULD</em> only use media type parameters when they are required by that type/subtype definition.
     2330      </p>
     2331      <p id="rfc.section.6.5.p.8">Media-type values are registered with the Internet Assigned Number Authority (IANA). The media type registration process is
     2332         outlined in <a href="#RFC4288" id="rfc.xref.RFC4288.1"><cite title="Media Type Specifications and Registration Procedures">[RFC4288]</cite></a>. Use of non-registered media types is discouraged.
     2333      </p>
     2334      <h3 id="rfc.section.6.5.1"><a href="#rfc.section.6.5.1">6.5.1</a>&nbsp;<a id="canonicalization.and.text.defaults" href="#canonicalization.and.text.defaults">Canonicalization and Text Defaults</a></h3>
     2335      <p id="rfc.section.6.5.1.p.1">Internet media types are registered with a canonical form. A representation transferred via HTTP messages <em class="bcp14">MUST</em> be in the appropriate canonical form prior to its transmission except for "text" types, as defined in the next paragraph.
     2336      </p>
     2337      <p id="rfc.section.6.5.1.p.2">When in canonical form, media subtypes of the "text" type use CRLF as the text line break. HTTP relaxes this requirement and
     2338         allows the transport of text media with plain CR or LF alone representing a line break when it is done consistently for an
     2339         entire representation. HTTP applications <em class="bcp14">MUST</em> accept CRLF, bare CR, and bare LF as indicating a line break in text media received via HTTP. In addition, if the text is
     2340         in a character encoding that does not use octets 13 and 10 for CR and LF respectively, as is the case for some multi-byte
     2341         character encodings, HTTP allows the use of whatever octet sequences are defined by that character encoding to represent the
     2342         equivalent of CR and LF for line breaks. This flexibility regarding line breaks applies only to text media in the payload
     2343         body; a bare CR or LF <em class="bcp14">MUST NOT</em> be substituted for CRLF within any of the HTTP control structures (such as header fields and multipart boundaries).
     2344      </p>
     2345      <p id="rfc.section.6.5.1.p.3">If a representation is encoded with a content-coding, the underlying data <em class="bcp14">MUST</em> be in a form defined above prior to being encoded.
     2346      </p>
     2347      <h3 id="rfc.section.6.5.2"><a href="#rfc.section.6.5.2">6.5.2</a>&nbsp;<a id="multipart.types" href="#multipart.types">Multipart Types</a></h3>
     2348      <p id="rfc.section.6.5.2.p.1">MIME provides for a number of "multipart" types — encapsulations of one or more representations within a single message body.
     2349         All multipart types share a common syntax, as defined in <a href="http://tools.ietf.org/html/rfc2046#section-5.1.1">Section 5.1.1</a> of <a href="#RFC2046" id="rfc.xref.RFC2046.2"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a>, and <em class="bcp14">MUST</em> include a boundary parameter as part of the media type value. The message body is itself a protocol element and <em class="bcp14">MUST</em> therefore use only CRLF to represent line breaks between body-parts.
     2350      </p>
     2351      <p id="rfc.section.6.5.2.p.2">In general, HTTP treats a multipart message body no differently than any other media type: strictly as payload. HTTP does
     2352         not use the multipart boundary as an indicator of message body length.  In all other respects, an HTTP user agent <em class="bcp14">SHOULD</em> follow the same or similar behavior as a MIME user agent would upon receipt of a multipart type. The MIME header fields within
     2353         each body-part of a multipart message body do not have any significance to HTTP beyond that defined by their MIME semantics.
     2354      </p>
     2355      <p id="rfc.section.6.5.2.p.3">If an application receives an unrecognized multipart subtype, the application <em class="bcp14">MUST</em> treat it as being equivalent to "multipart/mixed".
     2356      </p>
     2357      <div class="note" id="rfc.section.6.5.2.p.4">
     2358         <p> <b>Note:</b> The "multipart/form-data" type has been specifically defined for carrying form data suitable for processing via the POST request
     2359            method, as described in <a href="#RFC2388" id="rfc.xref.RFC2388.1"><cite title="Returning Values from Forms: multipart/form-data">[RFC2388]</cite></a>.
     2360         </p>
     2361      </div>
     2362      <h2 id="rfc.section.6.6"><a href="#rfc.section.6.6">6.6</a>&nbsp;<a id="language.tags" href="#language.tags">Language Tags</a></h2>
     2363      <p id="rfc.section.6.6.p.1">A language tag, as defined in <a href="#RFC5646" id="rfc.xref.RFC5646.1"><cite title="Tags for Identifying Languages">[RFC5646]</cite></a>, identifies a natural language spoken, written, or otherwise conveyed by human beings for communication of information to
     2364         other human beings. Computer languages are explicitly excluded. HTTP uses language tags within the Accept-Language and Content-Language
     2365         fields.
     2366      </p>
     2367      <p id="rfc.section.6.6.p.2">In summary, a language tag is composed of one or more parts: A primary language subtag followed by a possibly empty series
     2368         of subtags:
     2369      </p>
     2370      <div id="rfc.figure.u.21"></div><pre class="inline"><span id="rfc.iref.g.30"></span>  <a href="#language.tags" class="smpl">language-tag</a> = &lt;Language-Tag, defined in <a href="#RFC5646" id="rfc.xref.RFC5646.2"><cite title="Tags for Identifying Languages">[RFC5646]</cite></a>, <a href="http://tools.ietf.org/html/rfc5646#section-2.1">Section 2.1</a>&gt;
     2371</pre><p id="rfc.section.6.6.p.4">White space is not allowed within the tag and all tags are case-insensitive. The name space of language subtags is administered
     2372         by the IANA (see &lt;<a href="http://www.iana.org/assignments/language-subtag-registry">http://www.iana.org/assignments/language-subtag-registry</a>&gt;).
     2373      </p>
     2374      <div id="rfc.figure.u.22"></div>
     2375      <p>Example tags include:</p>  <pre class="text">  en, en-US, es-419, az-Arab, x-pig-latin, man-Nkoo-GN
     2376</pre> <p id="rfc.section.6.6.p.6">See <a href="#RFC5646" id="rfc.xref.RFC5646.3"><cite title="Tags for Identifying Languages">[RFC5646]</cite></a> for further information.
     2377      </p>
    22522378      <h1 id="rfc.section.7"><a href="#rfc.section.7">7.</a>&nbsp;<a id="header.field.definitions" href="#header.field.definitions">Header Field Definitions</a></h1>
    22532379      <p id="rfc.section.7.p.1">This section defines the syntax and semantics of HTTP/1.1 header fields related to request and response semantics.</p>
     
    22582384         is strictly to inform the recipient of valid request methods associated with the resource.
    22592385      </p>
    2260       <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.21"></span>  <a href="#header.allow" class="smpl">Allow</a> = #<a href="#methods" class="smpl">method</a>
     2386      <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.31"></span>  <a href="#header.allow" class="smpl">Allow</a> = #<a href="#methods" class="smpl">method</a>
    22612387</pre><p id="rfc.section.7.1.p.3">Example of use:</p>
    2262       <div id="rfc.figure.u.18"></div><pre class="text">  Allow: GET, HEAD, PUT
     2388      <div id="rfc.figure.u.24"></div><pre class="text">  Allow: GET, HEAD, PUT
    22632389</pre><p id="rfc.section.7.1.p.5">The actual set of allowed methods is defined by the origin server at the time of each request.</p>
    22642390      <p id="rfc.section.7.1.p.6">A proxy <em class="bcp14">MUST NOT</em> modify the Allow header field — it does not need to understand all the methods specified in order to handle them according
    22652391         to the generic message handling rules.
    22662392      </p>
    2267       <div id="rfc.iref.d.2"></div>
     2393      <div id="rfc.iref.d.3"></div>
    22682394      <div id="rfc.iref.h.3"></div>
    22692395      <h2 id="rfc.section.7.2"><a href="#rfc.section.7.2">7.2</a>&nbsp;<a id="header.date" href="#header.date">Date</a></h2>
     
    22712397         Origination Date Field (orig-date) defined in <a href="http://tools.ietf.org/html/rfc5322#section-3.6.1">Section 3.6.1</a> of <a href="#RFC5322" id="rfc.xref.RFC5322.2"><cite title="Internet Message Format">[RFC5322]</cite></a>. The field value is an HTTP-date, as defined in <a href="#http.date" title="Date/Time Formats">Section&nbsp;6.1</a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
    22722398      </p>
    2273       <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.22"></span>  <a href="#header.date" class="smpl">Date</a> = <a href="#http.date" class="smpl">HTTP-date</a>
     2399      <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.32"></span>  <a href="#header.date" class="smpl">Date</a> = <a href="#http.date" class="smpl">HTTP-date</a>
    22742400</pre><p id="rfc.section.7.2.p.3">An example is</p>
    2275       <div id="rfc.figure.u.20"></div><pre class="text">  Date: Tue, 15 Nov 1994 08:12:31 GMT
     2401      <div id="rfc.figure.u.26"></div><pre class="text">  Date: Tue, 15 Nov 1994 08:12:31 GMT
    22762402</pre><p id="rfc.section.7.2.p.5">Origin servers <em class="bcp14">MUST</em> include a Date header field in all responses, except in these cases:
    22772403      </p>
     
    22992425      <h2 id="rfc.section.7.3"><a href="#rfc.section.7.3">7.3</a>&nbsp;<a id="header.expect" href="#header.expect">Expect</a></h2>
    23002426      <p id="rfc.section.7.3.p.1">The "Expect" header field is used to indicate that particular server behaviors are required by the client.</p>
    2301       <div id="rfc.figure.u.21"></div><pre class="inline"><span id="rfc.iref.g.23"></span><span id="rfc.iref.g.24"></span><span id="rfc.iref.g.25"></span><span id="rfc.iref.g.26"></span><span id="rfc.iref.g.27"></span>  <a href="#header.expect" class="smpl">Expect</a>       = 1#<a href="#header.expect" class="smpl">expectation</a>
     2427      <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.33"></span><span id="rfc.iref.g.34"></span><span id="rfc.iref.g.35"></span><span id="rfc.iref.g.36"></span><span id="rfc.iref.g.37"></span>  <a href="#header.expect" class="smpl">Expect</a>       = 1#<a href="#header.expect" class="smpl">expectation</a>
    23022428 
    23032429  <a href="#header.expect" class="smpl">expectation</a>  = <a href="#header.expect" class="smpl">expect-name</a> [ <a href="#core.rules" class="smpl">BWS</a> "=" <a href="#core.rules" class="smpl">BWS</a> <a href="#header.expect" class="smpl">expect-value</a> ]
     
    23112437      </p>
    23122438      <p id="rfc.section.7.3.p.4">The only expectation defined by this specification is:</p>
    2313       <p id="rfc.section.7.3.p.5"><span id="rfc.iref.88"></span><span id="rfc.iref.e.2"></span> 100-continue
     2439      <p id="rfc.section.7.3.p.5"><span id="rfc.iref.103"></span><span id="rfc.iref.e.2"></span> 100-continue
    23142440      </p>
    23152441      <ul class="empty">
    2316          <li>The "100-continue" expectation is defined <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 6.4.3</a> of <a href="#Part1" id="rfc.xref.Part1.39"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. It does not support any expect-params.
     2442         <li>The "100-continue" expectation is defined <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 6.4.3</a> of <a href="#Part1" id="rfc.xref.Part1.44"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. It does not support any expect-params.
    23172443         </li>
    23182444      </ul>
     
    23272453      <p id="rfc.section.7.4.p.1">The "From" header field, if given, <em class="bcp14">SHOULD</em> contain an Internet e-mail address for the human user who controls the requesting user agent. The address <em class="bcp14">SHOULD</em> be machine-usable, as defined by "mailbox" in <a href="http://tools.ietf.org/html/rfc5322#section-3.4">Section 3.4</a> of <a href="#RFC5322" id="rfc.xref.RFC5322.3"><cite title="Internet Message Format">[RFC5322]</cite></a>:
    23282454      </p>
    2329       <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.28"></span>  <a href="#header.from" class="smpl">From</a>    = <a href="#header.from" class="smpl">mailbox</a>
     2455      <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.38"></span>  <a href="#header.from" class="smpl">From</a>    = <a href="#header.from" class="smpl">mailbox</a>
    23302456 
    23312457  <a href="#header.from" class="smpl">mailbox</a> = &lt;mailbox, defined in <a href="#RFC5322" id="rfc.xref.RFC5322.4"><cite title="Internet Message Format">[RFC5322]</cite></a>, <a href="http://tools.ietf.org/html/rfc5322#section-3.4">Section 3.4</a>&gt;
    23322458</pre><p id="rfc.section.7.4.p.3">An example is:</p>
    2333       <div id="rfc.figure.u.23"></div><pre class="text">  From: webmaster@example.org
     2459      <div id="rfc.figure.u.29"></div><pre class="text">  From: webmaster@example.org
    23342460</pre><p id="rfc.section.7.4.p.5">This header field <em class="bcp14">MAY</em> be used for logging purposes and as a means for identifying the source of invalid or unwanted requests. It <em class="bcp14">SHOULD NOT</em> be used as an insecure form of access protection. The interpretation of this field is that the request is being performed
    23352461         on behalf of the person given, who accepts responsibility for the method performed. In particular, robot agents <em class="bcp14">SHOULD</em> include this header field so that the person responsible for running the robot can be contacted if problems occur on the receiving
     
    23482474      <p id="rfc.section.7.5.p.1">The "Location" header field <em class="bcp14">MAY</em> be sent in responses to refer to a specific resource in accordance with the semantics of the status code.
    23492475      </p>
    2350       <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.29"></span>  <a href="#header.location" class="smpl">Location</a> = <a href="#abnf.dependencies" class="smpl">URI-reference</a>
     2476      <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.39"></span>  <a href="#header.location" class="smpl">Location</a> = <a href="#abnf.dependencies" class="smpl">URI-reference</a>
    23512477</pre><p id="rfc.section.7.5.p.3">For 201 (Created) responses, the Location is the URI of the new resource which was created by the request. For 3xx responses,
    23522478         the location <em class="bcp14">SHOULD</em> indicate the server's preferred URI for automatic redirection to the resource.
     
    23552481         then the original URI's fragment identifier is added to the final value.
    23562482      </p>
    2357       <div id="rfc.figure.u.25"></div>
     2483      <div id="rfc.figure.u.31"></div>
    23582484      <p>For example, the original URI "http://www.example.org/~tim", combined with a field value given as:</p>  <pre class="text">  Location: /pub/WWW/People.html#tim
    23592485</pre>  <p>would result in a final value of "http://www.example.org/pub/WWW/People.html#tim"</p>
    2360       <div id="rfc.figure.u.26"></div>
     2486      <div id="rfc.figure.u.32"></div>
    23612487      <p>An original URI "http://www.example.org/index.html#larry", combined with a field value given as:</p>  <pre class="text">  Location: http://www.example.net/index.html
    23622488</pre>  <p>would result in a final value of "http://www.example.net/index.html#larry", preserving the original fragment identifier.</p>
     
    23702496      </p>
    23712497      <div class="note" id="rfc.section.7.5.p.9">
    2372          <p> <b>Note:</b> The Content-Location header field (<a href="#header.content-location" id="rfc.xref.header.content-location.2" title="Content-Location">Appendix&nbsp;D.5.7</a>) differs from Location in that the Content-Location identifies the most specific resource corresponding to the enclosed representation.
     2498         <p> <b>Note:</b> The Content-Location header field (<a href="#header.content-location" id="rfc.xref.header.content-location.2" title="Content-Location">Appendix&nbsp;D.4.7</a>) differs from Location in that the Content-Location identifies the most specific resource corresponding to the enclosed representation.
    23732499            It is therefore possible for a response to contain header fields for both Location and Content-Location.
    23742500         </p>
     
    23802506         to trace a request which appears to be failing or looping mid-chain.
    23812507      </p>
    2382       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.30"></span>  <a href="#header.max-forwards" class="smpl">Max-Forwards</a> = 1*<a href="#notation" class="smpl">DIGIT</a>
     2508      <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.40"></span>  <a href="#header.max-forwards" class="smpl">Max-Forwards</a> = 1*<a href="#notation" class="smpl">DIGIT</a>
    23832509</pre><p id="rfc.section.7.6.p.3">The Max-Forwards value is a decimal integer indicating the remaining number of times this request message can be forwarded.</p>
    23842510      <p id="rfc.section.7.6.p.4">Each recipient of a TRACE or OPTIONS request containing a Max-Forwards header field <em class="bcp14">MUST</em> check and update its value prior to forwarding the request. If the received value is zero (0), the recipient <em class="bcp14">MUST NOT</em> forward the request; instead, it <em class="bcp14">MUST</em> respond as the final recipient. If the received Max-Forwards value is greater than zero, then the forwarded message <em class="bcp14">MUST</em> contain an updated Max-Forwards field with a value decremented by one (1).
     
    24002526         non-HTTP URIs (e.g., FTP).
    24012527      </p>
    2402       <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.31"></span>  <a href="#header.referer" class="smpl">Referer</a> = <a href="#abnf.dependencies" class="smpl">absolute-URI</a> / <a href="#abnf.dependencies" class="smpl">partial-URI</a>
     2528      <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.41"></span>  <a href="#header.referer" class="smpl">Referer</a> = <a href="#abnf.dependencies" class="smpl">absolute-URI</a> / <a href="#abnf.dependencies" class="smpl">partial-URI</a>
    24032529</pre><p id="rfc.section.7.7.p.5">Example:</p>
    2404       <div id="rfc.figure.u.29"></div><pre class="text">  Referer: http://www.example.org/hypertext/Overview.html
     2530      <div id="rfc.figure.u.35"></div><pre class="text">  Referer: http://www.example.org/hypertext/Overview.html
    24052531</pre><p id="rfc.section.7.7.p.7">If the field value is a relative URI, it <em class="bcp14">SHOULD</em> be interpreted relative to the effective request URI. The URI <em class="bcp14">MUST NOT</em> include a fragment. See <a href="#encoding.sensitive.information.in.uris" title="Encoding Sensitive Information in URIs">Section&nbsp;9.2</a> for security considerations.
    24062532      </p>
     
    24132539      </p>
    24142540      <p id="rfc.section.7.8.p.2">The value of this field can be either an HTTP-date or an integer number of seconds (in decimal) after the time of the response.</p>
    2415       <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.32"></span>  <a href="#header.retry-after" class="smpl">Retry-After</a> = <a href="#http.date" class="smpl">HTTP-date</a> / <a href="#rule.delta-seconds" class="smpl">delta-seconds</a>
     2541      <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.42"></span>  <a href="#header.retry-after" class="smpl">Retry-After</a> = <a href="#http.date" class="smpl">HTTP-date</a> / <a href="#rule.delta-seconds" class="smpl">delta-seconds</a>
    24162542</pre><div id="rule.delta-seconds">
    24172543         <p id="rfc.section.7.8.p.4">  Time spans are non-negative decimal integers, representing time in seconds.</p>
    24182544      </div>
    2419       <div id="rfc.figure.u.31"></div><pre class="inline"><span id="rfc.iref.g.33"></span>  <a href="#rule.delta-seconds" class="smpl">delta-seconds</a>  = 1*<a href="#notation" class="smpl">DIGIT</a>
     2545      <div id="rfc.figure.u.37"></div><pre class="inline"><span id="rfc.iref.g.43"></span>  <a href="#rule.delta-seconds" class="smpl">delta-seconds</a>  = 1*<a href="#notation" class="smpl">DIGIT</a>
    24202546</pre><p id="rfc.section.7.8.p.6">Two examples of its use are</p>
    2421       <div id="rfc.figure.u.32"></div><pre class="text">  Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
     2547      <div id="rfc.figure.u.38"></div><pre class="text">  Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
    24222548  Retry-After: 120
    24232549</pre><p id="rfc.section.7.8.p.8">In the latter example, the delay is 2 minutes.</p>
     
    24262552      <h2 id="rfc.section.7.9"><a href="#rfc.section.7.9">7.9</a>&nbsp;<a id="header.server" href="#header.server">Server</a></h2>
    24272553      <p id="rfc.section.7.9.p.1">The "Server" header field contains information about the software used by the origin server to handle the request.</p>
    2428       <p id="rfc.section.7.9.p.2">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;6.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.40"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) identifying the server and any significant subproducts. The product tokens are listed in order of their significance for
     2554      <p id="rfc.section.7.9.p.2">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;6.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.45"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) identifying the server and any significant subproducts. The product tokens are listed in order of their significance for
    24292555         identifying the application.
    24302556      </p>
    2431       <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.34"></span>  <a href="#header.server" class="smpl">Server</a> = <a href="#product.tokens" class="smpl">product</a> *( <a href="#core.rules" class="smpl">RWS</a> ( <a href="#product.tokens" class="smpl">product</a> / <a href="#abnf.dependencies" class="smpl">comment</a> ) )
     2557      <div id="rfc.figure.u.39"></div><pre class="inline"><span id="rfc.iref.g.44"></span>  <a href="#header.server" class="smpl">Server</a> = <a href="#product.tokens" class="smpl">product</a> *( <a href="#core.rules" class="smpl">RWS</a> ( <a href="#product.tokens" class="smpl">product</a> / <a href="#abnf.dependencies" class="smpl">comment</a> ) )
    24322558</pre><p id="rfc.section.7.9.p.4">Example:</p>
    2433       <div id="rfc.figure.u.34"></div><pre class="text">  Server: CERN/3.0 libwww/2.17
    2434 </pre><p id="rfc.section.7.9.p.6">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the Server header field. Instead, it <em class="bcp14">MUST</em> include a Via field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 6.2</a> of <a href="#Part1" id="rfc.xref.Part1.41"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
     2559      <div id="rfc.figure.u.40"></div><pre class="text">  Server: CERN/3.0 libwww/2.17
     2560</pre><p id="rfc.section.7.9.p.6">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the Server header field. Instead, it <em class="bcp14">MUST</em> include a Via field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 6.2</a> of <a href="#Part1" id="rfc.xref.Part1.46"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
    24352561      </p>
    24362562      <div class="note" id="rfc.section.7.9.p.7">
     
    24482574         user agent limitations.
    24492575      </p>
    2450       <p id="rfc.section.7.10.p.3">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;6.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.42"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) identifying the agent and its significant subproducts. By convention, the product tokens are listed in order of their significance
     2576      <p id="rfc.section.7.10.p.3">The field can contain multiple product tokens (<a href="#product.tokens" title="Product Tokens">Section&nbsp;6.2</a>) and comments (<a href="p1-messaging.html#header.fields" title="Header Fields">Section 3.2</a> of <a href="#Part1" id="rfc.xref.Part1.47"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) identifying the agent and its significant subproducts. By convention, the product tokens are listed in order of their significance
    24512577         for identifying the application.
    24522578      </p>
     
    24592585         doing so makes the field value more difficult to parse.
    24602586      </p>
    2461       <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.35"></span>  <a href="#header.user-agent" class="smpl">User-Agent</a> = <a href="#product.tokens" class="smpl">product</a> *( <a href="#core.rules" class="smpl">RWS</a> ( <a href="#product.tokens" class="smpl">product</a> / <a href="#abnf.dependencies" class="smpl">comment</a> ) )
     2587      <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.45"></span>  <a href="#header.user-agent" class="smpl">User-Agent</a> = <a href="#product.tokens" class="smpl">product</a> *( <a href="#core.rules" class="smpl">RWS</a> ( <a href="#product.tokens" class="smpl">product</a> / <a href="#abnf.dependencies" class="smpl">comment</a> ) )
    24622588</pre><p id="rfc.section.7.10.p.7">Example:</p>
    2463       <div id="rfc.figure.u.36"></div><pre class="text">  User-Agent: CERN-LineMode/2.15 libwww/2.17b3
     2589      <div id="rfc.figure.u.42"></div><pre class="text">  User-Agent: CERN-LineMode/2.15 libwww/2.17b3
    24642590</pre><h1 id="rfc.section.8"><a href="#rfc.section.8">8.</a>&nbsp;<a id="IANA.considerations" href="#IANA.considerations">IANA Considerations</a></h1>
    24652591      <h2 id="rfc.section.8.1"><a href="#rfc.section.8.1">8.1</a>&nbsp;<a id="method.registration" href="#method.registration">Method Registry</a></h2>
     
    27842910                  <td class="left">http</td>
    27852911                  <td class="left">standard</td>
    2786                   <td class="left"> <a href="#header.accept" id="rfc.xref.header.accept.2" title="Accept">Appendix&nbsp;D.5.1</a>
     2912                  <td class="left"> <a href="#header.accept" id="rfc.xref.header.accept.3" title="Accept">Appendix&nbsp;D.4.1</a>
    27872913                  </td>
    27882914               </tr>
     
    27912917                  <td class="left">http</td>
    27922918                  <td class="left">standard</td>
    2793                   <td class="left"> <a href="#header.accept-charset" id="rfc.xref.header.accept-charset.2" title="Accept-Charset">Appendix&nbsp;D.5.2</a>
     2919                  <td class="left"> <a href="#header.accept-charset" id="rfc.xref.header.accept-charset.2" title="Accept-Charset">Appendix&nbsp;D.4.2</a>
    27942920                  </td>
    27952921               </tr>
     
    27982924                  <td class="left">http</td>
    27992925                  <td class="left">standard</td>
    2800                   <td class="left"> <a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.2" title="Accept-Encoding">Appendix&nbsp;D.5.3</a>
     2926                  <td class="left"> <a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.3" title="Accept-Encoding">Appendix&nbsp;D.4.3</a>
    28012927                  </td>
    28022928               </tr>
     
    28052931                  <td class="left">http</td>
    28062932                  <td class="left">standard</td>
    2807                   <td class="left"> <a href="#header.accept-language" id="rfc.xref.header.accept-language.2" title="Accept-Language">Appendix&nbsp;D.5.4</a>
     2933                  <td class="left"> <a href="#header.accept-language" id="rfc.xref.header.accept-language.2" title="Accept-Language">Appendix&nbsp;D.4.4</a>
    28082934                  </td>
    28092935               </tr>
     
    28192945                  <td class="left">http</td>
    28202946                  <td class="left">standard</td>
    2821                   <td class="left"> <a href="#header.content-encoding" id="rfc.xref.header.content-encoding.1" title="Content-Encoding">Appendix&nbsp;D.5.5</a>
     2947                  <td class="left"> <a href="#header.content-encoding" id="rfc.xref.header.content-encoding.2" title="Content-Encoding">Appendix&nbsp;D.4.5</a>
    28222948                  </td>
    28232949               </tr>
     
    28262952                  <td class="left">http</td>
    28272953                  <td class="left">standard</td>
    2828                   <td class="left"> <a href="#header.content-language" id="rfc.xref.header.content-language.1" title="Content-Language">Appendix&nbsp;D.5.6</a>
     2954                  <td class="left"> <a href="#header.content-language" id="rfc.xref.header.content-language.1" title="Content-Language">Appendix&nbsp;D.4.6</a>
    28292955                  </td>
    28302956               </tr>
     
    28332959                  <td class="left">http</td>
    28342960                  <td class="left">standard</td>
    2835                   <td class="left"> <a href="#header.content-location" id="rfc.xref.header.content-location.3" title="Content-Location">Appendix&nbsp;D.5.7</a>
     2961                  <td class="left"> <a href="#header.content-location" id="rfc.xref.header.content-location.3" title="Content-Location">Appendix&nbsp;D.4.7</a>
    28362962                  </td>
    28372963               </tr>
     
    28402966                  <td class="left">http</td>
    28412967                  <td class="left">standard</td>
    2842                   <td class="left"> <a href="#header.content-type" id="rfc.xref.header.content-type.3" title="Content-Type">Appendix&nbsp;D.5.8</a>
     2968                  <td class="left"> <a href="#header.content-type" id="rfc.xref.header.content-type.4" title="Content-Type">Appendix&nbsp;D.4.8</a>
    28432969                  </td>
    28442970               </tr>
     
    28753001                  <td class="left">http</td>
    28763002                  <td class="left">standard</td>
    2877                   <td class="left"> <a href="#mime-version" id="rfc.xref.mime-version.1" title="MIME-Version">Appendix&nbsp;D.8.1</a>
     3003                  <td class="left"> <a href="#mime-version" id="rfc.xref.mime-version.1" title="MIME-Version">Appendix&nbsp;D.7.1</a>
    28783004                  </td>
    28793005               </tr>
     
    29813107      </p>
    29823108      <h1 id="rfc.section.10"><a href="#rfc.section.10">10.</a>&nbsp;<a id="acks" href="#acks">Acknowledgments</a></h1>
    2983       <p id="rfc.section.10.p.1">See <a href="p1-messaging.html#acks" title="Acknowledgments">Section 9</a> of <a href="#Part1" id="rfc.xref.Part1.43"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
     3109      <p id="rfc.section.10.p.1">See <a href="p1-messaging.html#acks" title="Acknowledgments">Section 9</a> of <a href="#Part1" id="rfc.xref.Part1.48"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
    29843110      </p>
    29853111      <h1 id="rfc.references"><a id="rfc.section.11" href="#rfc.section.11">11.</a> References
     
    32253351      </p>
    32263352      <p id="rfc.section.A.p.16">In the description of the Server header field, the Via field was described as a SHOULD. The requirement was and is stated
    3227          correctly in the description of the Via header field in <a href="p1-messaging.html#header.via" title="Via">Section 6.2</a> of <a href="#Part1" id="rfc.xref.Part1.44"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.4" title="Server">Section&nbsp;7.9</a>)
     3353         correctly in the description of the Via header field in <a href="p1-messaging.html#header.via" title="Via">Section 6.2</a> of <a href="#Part1" id="rfc.xref.Part1.49"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.4" title="Server">Section&nbsp;7.9</a>)
    32283354      </p>
    32293355      <h1 id="rfc.section.B"><a href="#rfc.section.B">B.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
    3230       <div id="rfc.figure.u.37"></div> <pre class="inline"><a href="#header.accept" class="smpl">Accept</a> = [ ( "," / ( media-range [ accept-params ] ) ) *( OWS "," [
     3356      <div id="rfc.figure.u.43"></div> <pre class="inline"><a href="#header.accept" class="smpl">Accept</a> = [ ( "," / ( media-range [ accept-params ] ) ) *( OWS "," [
    32313357 OWS media-range [ accept-params ] ] ) ]
    32323358<a href="#header.accept-charset" class="smpl">Accept-Charset</a> = *( "," OWS ) ( charset / "*" ) [ OWS ";" OWS "q="
     
    33753501
    33763502<a href="#preferred.date.format" class="smpl">year</a> = 4DIGIT
    3377 </pre> <div id="rfc.figure.u.38"></div>
     3503</pre> <div id="rfc.figure.u.44"></div>
    33783504      <p>ABNF diagnostics:</p><pre class="inline">; qvalue UNDEFINED
    33793505; Accept defined but not used
     
    37223848      <h1 id="rfc.section.D"><a href="#rfc.section.D">D.</a>&nbsp;THE TEXT FORMERLY KNOWN AS PART3
    37233849      </h1>
    3724       <h2 id="rfc.section.D.1"><a href="#rfc.section.D.1">D.1</a>&nbsp;<a id="protocol.parameters" href="#protocol.parameters">Protocol Parameters</a></h2>
    3725       <h3 id="rfc.section.D.1.1"><a href="#rfc.section.D.1.1">D.1.1</a>&nbsp;<a id="character.sets" href="#character.sets">Character Encodings (charset)</a></h3>
    3726       <p id="rfc.section.D.1.1.p.1">HTTP uses charset names to indicate the character encoding of a textual representation.</p>
    3727       <div id="rule.charset">
    3728          <p id="rfc.section.D.1.1.p.2">  A character encoding is identified by a case-insensitive token. The complete set of tokens is defined by the IANA Character
    3729             Set registry (&lt;<a href="http://www.iana.org/assignments/character-sets">http://www.iana.org/assignments/character-sets</a>&gt;).
    3730          </p>
    3731       </div>
    3732       <div id="rfc.figure.u.39"></div><pre class="inline"><span id="rfc.iref.g.36"></span>  <a href="#rule.charset" class="smpl">charset</a> = <a href="#core.rules" class="smpl">token</a>
    3733 </pre><p id="rfc.section.D.1.1.p.4">Although HTTP allows an arbitrary token to be used as a charset value, any token that has a predefined value within the IANA
    3734          Character Set registry <em class="bcp14">MUST</em> represent the character encoding defined by that registry. Applications <em class="bcp14">SHOULD</em> limit their use of character encodings to those defined within the IANA registry.
    3735       </p>
    3736       <p id="rfc.section.D.1.1.p.5">HTTP uses charset in two contexts: within an Accept-Charset request header field (in which the charset value is an unquoted
    3737          token) and as the value of a parameter in a Content-Type header field (within a request or response), in which case the parameter
    3738          value of the charset parameter can be quoted.
    3739       </p>
    3740       <p id="rfc.section.D.1.1.p.6">Implementors need to be aware of IETF character set requirements <a href="#RFC3629" id="rfc.xref.RFC3629.1"><cite title="UTF-8, a transformation format of ISO 10646">[RFC3629]</cite></a>  <a href="#RFC2277" id="rfc.xref.RFC2277.1"><cite title="IETF Policy on Character Sets and Languages">[RFC2277]</cite></a>.
    3741       </p>
    3742       <h3 id="rfc.section.D.1.2"><a href="#rfc.section.D.1.2">D.1.2</a>&nbsp;<a id="content.codings" href="#content.codings">Content Codings</a></h3>
    3743       <p id="rfc.section.D.1.2.p.1">Content coding values indicate an encoding transformation that has been or can be applied to a representation. Content codings
    3744          are primarily used to allow a representation to be compressed or otherwise usefully transformed without losing the identity
    3745          of its underlying media type and without loss of information. Frequently, the representation is stored in coded form, transmitted
    3746          directly, and only decoded by the recipient.
    3747       </p>
    3748       <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.37"></span>  <a href="#content.codings" class="smpl">content-coding</a>   = <a href="#core.rules" class="smpl">token</a>
    3749 </pre><p id="rfc.section.D.1.2.p.3">All content-coding values are case-insensitive. HTTP/1.1 uses content-coding values in the Accept-Encoding (<a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.3" title="Accept-Encoding">Appendix&nbsp;D.5.3</a>) and Content-Encoding (<a href="#header.content-encoding" id="rfc.xref.header.content-encoding.2" title="Content-Encoding">Appendix&nbsp;D.5.5</a>) header fields. Although the value describes the content-coding, what is more important is that it indicates what decoding
    3750          mechanism will be required to remove the encoding.
    3751       </p>
    3752       <p id="rfc.section.D.1.2.p.4">compress<span id="rfc.iref.c.3"></span><span id="rfc.iref.c.4"></span> 
    3753       </p>
    3754       <ul class="empty">
    3755          <li>See <a href="p1-messaging.html#compress.coding" title="Compress Coding">Section 4.2.1</a> of <a href="#Part1" id="rfc.xref.Part1.45"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
    3756          </li>
    3757       </ul>
    3758       <p id="rfc.section.D.1.2.p.5">deflate<span id="rfc.iref.d.3"></span><span id="rfc.iref.c.5"></span> 
    3759       </p>
    3760       <ul class="empty">
    3761          <li>See <a href="p1-messaging.html#deflate.coding" title="Deflate Coding">Section 4.2.2</a> of <a href="#Part1" id="rfc.xref.Part1.46"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
    3762          </li>
    3763       </ul>
    3764       <p id="rfc.section.D.1.2.p.6">gzip<span id="rfc.iref.g.38"></span><span id="rfc.iref.c.6"></span> 
    3765       </p>
    3766       <ul class="empty">
    3767          <li>See <a href="p1-messaging.html#gzip.coding" title="Gzip Coding">Section 4.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.47"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
    3768          </li>
    3769       </ul>
    3770       <h4 id="rfc.section.D.1.2.1"><a href="#rfc.section.D.1.2.1">D.1.2.1</a>&nbsp;<a id="content.coding.registry" href="#content.coding.registry">Content Coding Registry</a></h4>
    3771       <p id="rfc.section.D.1.2.1.p.1">The HTTP Content Coding Registry defines the name space for the content coding names.</p>
    3772       <p id="rfc.section.D.1.2.1.p.2">Registrations <em class="bcp14">MUST</em> include the following fields:
    3773       </p>
    3774       <ul>
    3775          <li>Name</li>
    3776          <li>Description</li>
    3777          <li>Pointer to specification text</li>
    3778       </ul>
    3779       <p id="rfc.section.D.1.2.1.p.3">Names of content codings <em class="bcp14">MUST NOT</em> overlap with names of transfer codings (<a href="p1-messaging.html#transfer.codings" title="Transfer Codings">Section 4</a> of <a href="#Part1" id="rfc.xref.Part1.48"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>), unless the encoding transformation is identical (as is the case for the compression codings defined in <a href="p1-messaging.html#compression.codings" title="Compression Codings">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.49"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
    3780       </p>
    3781       <p id="rfc.section.D.1.2.1.p.4">Values to be added to this name space require IETF Review (see <a href="http://tools.ietf.org/html/rfc5226#section-4.1">Section 4.1</a> of <a href="#RFC5226" id="rfc.xref.RFC5226.3"><cite title="Guidelines for Writing an IANA Considerations Section in RFCs">[RFC5226]</cite></a>), and <em class="bcp14">MUST</em> conform to the purpose of content coding defined in this section.
    3782       </p>
    3783       <p id="rfc.section.D.1.2.1.p.5">The registry itself is maintained at &lt;<a href="http://www.iana.org/assignments/http-parameters">http://www.iana.org/assignments/http-parameters</a>&gt;.
    3784       </p>
    3785       <h3 id="rfc.section.D.1.3"><a href="#rfc.section.D.1.3">D.1.3</a>&nbsp;<a id="media.types" href="#media.types">Media Types</a></h3>
    3786       <p id="rfc.section.D.1.3.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.4" title="Content-Type">Appendix&nbsp;D.5.8</a>) and Accept (<a href="#header.accept" id="rfc.xref.header.accept.3" title="Accept">Appendix&nbsp;D.5.1</a>) header fields in order to provide open and extensible data typing and type negotiation.
    3787       </p>
    3788       <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.39"></span><span id="rfc.iref.g.40"></span><span id="rfc.iref.g.41"></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> )
    3789   <a href="#media.types" class="smpl">type</a>       = <a href="#core.rules" class="smpl">token</a>
    3790   <a href="#media.types" class="smpl">subtype</a>    = <a href="#core.rules" class="smpl">token</a>
    3791 </pre><div id="rule.parameter">
    3792          <p id="rfc.section.D.1.3.p.3">      The type/subtype <em class="bcp14">MAY</em> be followed by parameters in the form of attribute/value pairs.
    3793          </p>
    3794       </div>
    3795       <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.42"></span><span id="rfc.iref.g.43"></span><span id="rfc.iref.g.44"></span>  <a href="#rule.parameter" class="smpl">parameter</a>      = <a href="#rule.parameter" class="smpl">attribute</a> "=" <a href="#rule.parameter" class="smpl">value</a>
    3796   <a href="#rule.parameter" class="smpl">attribute</a>      = <a href="#core.rules" class="smpl">token</a>
    3797   <a href="#rule.parameter" class="smpl">value</a>          = <a href="#core.rules" class="smpl">word</a>
    3798 </pre><p id="rfc.section.D.1.3.p.5">The type, subtype, and parameter attribute names are case-insensitive. Parameter values might or might not be case-sensitive,
    3799          depending on the semantics of the parameter name. The presence or absence of a parameter might be significant to the processing
    3800          of a media-type, depending on its definition within the media type registry.
    3801       </p>
    3802       <p id="rfc.section.D.1.3.p.6">A parameter value that matches the <a href="#core.rules" class="smpl">token</a> production can be transmitted as either a token or within a quoted-string. The quoted and unquoted values are equivalent.
    3803       </p>
    3804       <p id="rfc.section.D.1.3.p.7">Note that some older HTTP applications do not recognize media type parameters. When sending data to older HTTP applications,
    3805          implementations <em class="bcp14">SHOULD</em> only use media type parameters when they are required by that type/subtype definition.
    3806       </p>
    3807       <p id="rfc.section.D.1.3.p.8">Media-type values are registered with the Internet Assigned Number Authority (IANA). The media type registration process is
    3808          outlined in <a href="#RFC4288" id="rfc.xref.RFC4288.1"><cite title="Media Type Specifications and Registration Procedures">[RFC4288]</cite></a>. Use of non-registered media types is discouraged.
    3809       </p>
    3810       <h4 id="rfc.section.D.1.3.1"><a href="#rfc.section.D.1.3.1">D.1.3.1</a>&nbsp;<a id="canonicalization.and.text.defaults" href="#canonicalization.and.text.defaults">Canonicalization and Text Defaults</a></h4>
    3811       <p id="rfc.section.D.1.3.1.p.1">Internet media types are registered with a canonical form. A representation transferred via HTTP messages <em class="bcp14">MUST</em> be in the appropriate canonical form prior to its transmission except for "text" types, as defined in the next paragraph.
    3812       </p>
    3813       <p id="rfc.section.D.1.3.1.p.2">When in canonical form, media subtypes of the "text" type use CRLF as the text line break. HTTP relaxes this requirement and
    3814          allows the transport of text media with plain CR or LF alone representing a line break when it is done consistently for an
    3815          entire representation. HTTP applications <em class="bcp14">MUST</em> accept CRLF, bare CR, and bare LF as indicating a line break in text media received via HTTP. In addition, if the text is
    3816          in a character encoding that does not use octets 13 and 10 for CR and LF respectively, as is the case for some multi-byte
    3817          character encodings, HTTP allows the use of whatever octet sequences are defined by that character encoding to represent the
    3818          equivalent of CR and LF for line breaks. This flexibility regarding line breaks applies only to text media in the payload
    3819          body; a bare CR or LF <em class="bcp14">MUST NOT</em> be substituted for CRLF within any of the HTTP control structures (such as header fields and multipart boundaries).
    3820       </p>
    3821       <p id="rfc.section.D.1.3.1.p.3">If a representation is encoded with a content-coding, the underlying data <em class="bcp14">MUST</em> be in a form defined above prior to being encoded.
    3822       </p>
    3823       <h4 id="rfc.section.D.1.3.2"><a href="#rfc.section.D.1.3.2">D.1.3.2</a>&nbsp;<a id="multipart.types" href="#multipart.types">Multipart Types</a></h4>
    3824       <p id="rfc.section.D.1.3.2.p.1">MIME provides for a number of "multipart" types — encapsulations of one or more representations within a single message body.
    3825          All multipart types share a common syntax, as defined in <a href="http://tools.ietf.org/html/rfc2046#section-5.1.1">Section 5.1.1</a> of <a href="#RFC2046" id="rfc.xref.RFC2046.2"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a>, and <em class="bcp14">MUST</em> include a boundary parameter as part of the media type value. The message body is itself a protocol element and <em class="bcp14">MUST</em> therefore use only CRLF to represent line breaks between body-parts.
    3826       </p>
    3827       <p id="rfc.section.D.1.3.2.p.2">In general, HTTP treats a multipart message body no differently than any other media type: strictly as payload. HTTP does
    3828          not use the multipart boundary as an indicator of message body length.  In all other respects, an HTTP user agent <em class="bcp14">SHOULD</em> follow the same or similar behavior as a MIME user agent would upon receipt of a multipart type. The MIME header fields within
    3829          each body-part of a multipart message body do not have any significance to HTTP beyond that defined by their MIME semantics.
    3830       </p>
    3831       <p id="rfc.section.D.1.3.2.p.3">If an application receives an unrecognized multipart subtype, the application <em class="bcp14">MUST</em> treat it as being equivalent to "multipart/mixed".
    3832       </p>
    3833       <div class="note" id="rfc.section.D.1.3.2.p.4">
    3834          <p> <b>Note:</b> The "multipart/form-data" type has been specifically defined for carrying form data suitable for processing via the POST request
    3835             method, as described in <a href="#RFC2388" id="rfc.xref.RFC2388.1"><cite title="Returning Values from Forms: multipart/form-data">[RFC2388]</cite></a>.
    3836          </p>
    3837       </div>
    3838       <h3 id="rfc.section.D.1.4"><a href="#rfc.section.D.1.4">D.1.4</a>&nbsp;<a id="language.tags" href="#language.tags">Language Tags</a></h3>
    3839       <p id="rfc.section.D.1.4.p.1">A language tag, as defined in <a href="#RFC5646" id="rfc.xref.RFC5646.1"><cite title="Tags for Identifying Languages">[RFC5646]</cite></a>, identifies a natural language spoken, written, or otherwise conveyed by human beings for communication of information to
    3840          other human beings. Computer languages are explicitly excluded. HTTP uses language tags within the Accept-Language and Content-Language
    3841          fields.
    3842       </p>
    3843       <p id="rfc.section.D.1.4.p.2">In summary, a language tag is composed of one or more parts: A primary language subtag followed by a possibly empty series
    3844          of subtags:
    3845       </p>
    3846       <div id="rfc.figure.u.43"></div><pre class="inline"><span id="rfc.iref.g.45"></span>  <a href="#language.tags" class="smpl">language-tag</a> = &lt;Language-Tag, defined in <a href="#RFC5646" id="rfc.xref.RFC5646.2"><cite title="Tags for Identifying Languages">[RFC5646]</cite></a>, <a href="http://tools.ietf.org/html/rfc5646#section-2.1">Section 2.1</a>&gt;
    3847 </pre><p id="rfc.section.D.1.4.p.4">White space is not allowed within the tag and all tags are case-insensitive. The name space of language subtags is administered
    3848          by the IANA (see &lt;<a href="http://www.iana.org/assignments/language-subtag-registry">http://www.iana.org/assignments/language-subtag-registry</a>&gt;).
    3849       </p>
    3850       <div id="rfc.figure.u.44"></div>
    3851       <p>Example tags include:</p>  <pre class="text">  en, en-US, es-419, az-Arab, x-pig-latin, man-Nkoo-GN
    3852 </pre> <p id="rfc.section.D.1.4.p.6">See <a href="#RFC5646" id="rfc.xref.RFC5646.3"><cite title="Tags for Identifying Languages">[RFC5646]</cite></a> for further information.
    3853       </p>
    3854       <h2 id="rfc.section.D.2"><a href="#rfc.section.D.2">D.2</a>&nbsp;<a id="payload" href="#payload">Payload</a></h2>
    3855       <p id="rfc.section.D.2.p.1">HTTP messages <em class="bcp14">MAY</em> transfer a payload if not otherwise restricted by the request method or response status code. The payload consists of metadata,
     3850      <h2 id="rfc.section.D.1"><a href="#rfc.section.D.1">D.1</a>&nbsp;<a id="payload" href="#payload">Payload</a></h2>
     3851      <p id="rfc.section.D.1.p.1">HTTP messages <em class="bcp14">MAY</em> transfer a payload if not otherwise restricted by the request method or response status code. The payload consists of metadata,
    38563852         in the form of header fields, and data, in the form of the sequence of octets in the message body after any transfer-coding
    38573853         has been decoded.
    38583854      </p>
    38593855      <div id="rfc.iref.p.3"></div>
    3860       <p id="rfc.section.D.2.p.2">A "<dfn>payload</dfn>" in HTTP is always a partial or complete representation of some resource. We use separate terms for payload and representation
     3856      <p id="rfc.section.D.1.p.2">A "<dfn>payload</dfn>" in HTTP is always a partial or complete representation of some resource. We use separate terms for payload and representation
    38613857         because some messages contain only the associated representation's header fields (e.g., responses to HEAD) or only some part(s)
    38623858         of the representation (e.g., the 206 status code).
    38633859      </p>
    3864       <h3 id="rfc.section.D.2.1"><a href="#rfc.section.D.2.1">D.2.1</a>&nbsp;<a id="payload.header.fields" href="#payload.header.fields">Payload Header Fields</a></h3>
    3865       <p id="rfc.section.D.2.1.p.1">HTTP header fields that specifically define the payload, rather than the associated representation, are referred to as "payload
     3860      <h3 id="rfc.section.D.1.1"><a href="#rfc.section.D.1.1">D.1.1</a>&nbsp;<a id="payload.header.fields" href="#payload.header.fields">Payload Header Fields</a></h3>
     3861      <p id="rfc.section.D.1.1.p.1">HTTP header fields that specifically define the payload, rather than the associated representation, are referred to as "payload
    38663862         header fields". The following payload header fields are defined by HTTP/1.1:
    38673863      </p>
     
    38863882         </table>
    38873883      </div>
    3888       <h3 id="rfc.section.D.2.2"><a href="#rfc.section.D.2.2">D.2.2</a>&nbsp;<a id="payload.body" href="#payload.body">Payload Body</a></h3>
    3889       <p id="rfc.section.D.2.2.p.1">A payload body is only present in a message when a message body is present, as described in <a href="p1-messaging.html#message.body" title="Message Body">Section 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.51"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The payload body is obtained from the message body by decoding any Transfer-Encoding that might have been applied to ensure
     3884      <h3 id="rfc.section.D.1.2"><a href="#rfc.section.D.1.2">D.1.2</a>&nbsp;<a id="payload.body" href="#payload.body">Payload Body</a></h3>
     3885      <p id="rfc.section.D.1.2.p.1">A payload body is only present in a message when a message body is present, as described in <a href="p1-messaging.html#message.body" title="Message Body">Section 3.3</a> of <a href="#Part1" id="rfc.xref.Part1.51"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The payload body is obtained from the message body by decoding any Transfer-Encoding that might have been applied to ensure
    38903886         safe and proper transfer of the message.
    38913887      </p>
    38923888      <div id="rfc.iref.r.3"></div>
    3893       <h2 id="rfc.section.D.3"><a href="#rfc.section.D.3">D.3</a>&nbsp;<a id="representation3" href="#representation3">Representation</a></h2>
    3894       <p id="rfc.section.D.3.p.1">A "<dfn>representation</dfn>" is information in a format that can be readily communicated from one party to another. A resource representation is information
     3889      <h2 id="rfc.section.D.2"><a href="#rfc.section.D.2">D.2</a>&nbsp;<a id="representation3" href="#representation3">Representation</a></h2>
     3890      <p id="rfc.section.D.2.p.1">A "<dfn>representation</dfn>" is information in a format that can be readily communicated from one party to another. A resource representation is information
    38953891         that reflects the state of that resource, as observed at some point in the past (e.g., in a response to GET) or to be desired
    38963892         at some point in the future (e.g., in a PUT request).
    38973893      </p>
    3898       <p id="rfc.section.D.3.p.2">Most, but not all, representations transferred via HTTP are intended to be a representation of the target resource (the resource
     3894      <p id="rfc.section.D.2.p.2">Most, but not all, representations transferred via HTTP are intended to be a representation of the target resource (the resource
    38993895         identified by the effective request URI). The precise semantics of a representation are determined by the type of message
    39003896         (request or response), the request method, the response status code, and the representation metadata. For example, the above
     
    39053901         next steps are suggested for resolving it.
    39063902      </p>
    3907       <h3 id="rfc.section.D.3.1"><a href="#rfc.section.D.3.1">D.3.1</a>&nbsp;<a id="representation.header.fields" href="#representation.header.fields">Representation Header Fields</a></h3>
    3908       <p id="rfc.section.D.3.1.p.1">Representation header fields define metadata about the representation data enclosed in the message body or, if no message
     3903      <h3 id="rfc.section.D.2.1"><a href="#rfc.section.D.2.1">D.2.1</a>&nbsp;<a id="representation.header.fields" href="#representation.header.fields">Representation Header Fields</a></h3>
     3904      <p id="rfc.section.D.2.1.p.1">Representation header fields define metadata about the representation data enclosed in the message body or, if no message
    39093905         body is present, about the representation that would have been transferred in a 200 response to a simultaneous GET request
    39103906         with the same effective request URI.
    39113907      </p>
    3912       <p id="rfc.section.D.3.1.p.2">The following header fields are defined as representation metadata:</p>
     3908      <p id="rfc.section.D.2.1.p.2">The following header fields are defined as representation metadata:</p>
    39133909      <div id="rfc.table.u.5">
    39143910         <table class="tt full left" cellpadding="3" cellspacing="0">
     
    39223918               <tr>
    39233919                  <td class="left">Content-Encoding</td>
    3924                   <td class="left"><a href="#header.content-encoding" id="rfc.xref.header.content-encoding.3" title="Content-Encoding">Appendix&nbsp;D.5.5</a></td>
     3920                  <td class="left"><a href="#header.content-encoding" id="rfc.xref.header.content-encoding.3" title="Content-Encoding">Appendix&nbsp;D.4.5</a></td>
    39253921               </tr>
    39263922               <tr>
    39273923                  <td class="left">Content-Language</td>
    3928                   <td class="left"><a href="#header.content-language" id="rfc.xref.header.content-language.2" title="Content-Language">Appendix&nbsp;D.5.6</a></td>
     3924                  <td class="left"><a href="#header.content-language" id="rfc.xref.header.content-language.2" title="Content-Language">Appendix&nbsp;D.4.6</a></td>
    39293925               </tr>
    39303926               <tr>
    39313927                  <td class="left">Content-Location</td>
    3932                   <td class="left"><a href="#header.content-location" id="rfc.xref.header.content-location.4" title="Content-Location">Appendix&nbsp;D.5.7</a></td>
     3928                  <td class="left"><a href="#header.content-location" id="rfc.xref.header.content-location.4" title="Content-Location">Appendix&nbsp;D.4.7</a></td>
    39333929               </tr>
    39343930               <tr>
    39353931                  <td class="left">Content-Type</td>
    3936                   <td class="left"><a href="#header.content-type" id="rfc.xref.header.content-type.5" title="Content-Type">Appendix&nbsp;D.5.8</a></td>
     3932                  <td class="left"><a href="#header.content-type" id="rfc.xref.header.content-type.5" title="Content-Type">Appendix&nbsp;D.4.8</a></td>
    39373933               </tr>
    39383934               <tr>
     
    39433939         </table>
    39443940      </div>
    3945       <p id="rfc.section.D.3.1.p.3">Additional header fields define metadata about the selected representation, which might differ from the representation included
     3941      <p id="rfc.section.D.2.1.p.3">Additional header fields define metadata about the selected representation, which might differ from the representation included
    39463942         in the message for responses to some state-changing methods. The following header fields are defined as selected representation
    39473943         metadata:
     
    39673963         </table>
    39683964      </div>
    3969       <h3 id="rfc.section.D.3.2"><a href="#rfc.section.D.3.2">D.3.2</a>&nbsp;<a id="representation.data" href="#representation.data">Representation Data</a></h3>
    3970       <p id="rfc.section.D.3.2.p.1">The representation body associated with an HTTP message is either provided as the payload body of the message or referred
     3965      <h3 id="rfc.section.D.2.2"><a href="#rfc.section.D.2.2">D.2.2</a>&nbsp;<a id="representation.data" href="#representation.data">Representation Data</a></h3>
     3966      <p id="rfc.section.D.2.2.p.1">The representation body associated with an HTTP message is either provided as the payload body of the message or referred
    39713967         to by the message semantics and the effective request URI. The representation data is in a format and encoding defined by
    39723968         the representation metadata header fields.
    39733969      </p>
    3974       <p id="rfc.section.D.3.2.p.2">The data type of the representation data is determined via the header fields Content-Type and Content-Encoding. These define
     3970      <p id="rfc.section.D.2.2.p.2">The data type of the representation data is determined via the header fields Content-Type and Content-Encoding. These define
    39753971         a two-layer, ordered encoding model:
    39763972      </p>
    39773973      <div id="rfc.figure.u.45"></div><pre class="text">  representation-data := Content-Encoding( Content-Type( bits ) )
    3978 </pre><p id="rfc.section.D.3.2.p.4">Content-Type specifies the media type of the underlying data, which defines both the data format and how that data <em class="bcp14">SHOULD</em> be processed by the recipient (within the scope of the request method semantics). Any HTTP/1.1 message containing a payload
     3974</pre><p id="rfc.section.D.2.2.p.4">Content-Type specifies the media type of the underlying data, which defines both the data format and how that data <em class="bcp14">SHOULD</em> be processed by the recipient (within the scope of the request method semantics). Any HTTP/1.1 message containing a payload
    39793975         body <em class="bcp14">SHOULD</em> include a Content-Type header field defining the media type of the associated representation unless that metadata is unknown
    39803976         to the sender. If the Content-Type header field is not present, it indicates that the sender does not know the media type
    39813977         of the representation; recipients <em class="bcp14">MAY</em> either assume that the media type is "application/octet-stream" (<a href="#RFC2046" id="rfc.xref.RFC2046.3"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a>, <a href="http://tools.ietf.org/html/rfc2046#section-4.5.1">Section 4.5.1</a>) or examine the content to determine its type.
    39823978      </p>
    3983       <p id="rfc.section.D.3.2.p.5">In practice, resource owners do not always properly configure their origin server to provide the correct Content-Type for
     3979      <p id="rfc.section.D.2.2.p.5">In practice, resource owners do not always properly configure their origin server to provide the correct Content-Type for
    39843980         a given representation, with the result that some clients will examine a response body's content and override the specified
    39853981         type. Clients that do so risk drawing incorrect conclusions, which might expose additional security risks (e.g., "privilege
     
    39883984         such "content sniffing" when it is used.
    39893985      </p>
    3990       <p id="rfc.section.D.3.2.p.6">Content-Encoding is used to indicate any additional content codings applied to the data, usually for the purpose of data compression,
     3986      <p id="rfc.section.D.2.2.p.6">Content-Encoding is used to indicate any additional content codings applied to the data, usually for the purpose of data compression,
    39913987         that are a property of the representation. If Content-Encoding is not present, then there is no additional encoding beyond
    39923988         that defined by the Content-Type.
    39933989      </p>
    3994       <h2 id="rfc.section.D.4"><a href="#rfc.section.D.4">D.4</a>&nbsp;<a id="content.negotiation" href="#content.negotiation">Content Negotiation</a></h2>
    3995       <p id="rfc.section.D.4.p.1">HTTP responses include a representation which contains information for interpretation, whether by a human user or for further
     3990      <h2 id="rfc.section.D.3"><a href="#rfc.section.D.3">D.3</a>&nbsp;<a id="content.negotiation" href="#content.negotiation">Content Negotiation</a></h2>
     3991      <p id="rfc.section.D.3.p.1">HTTP responses include a representation which contains information for interpretation, whether by a human user or for further
    39963992         processing. Often, the server has different ways of representing the same information; for example, in different formats,
    39973993         languages, or using different character encodings.
    39983994      </p>
    3999       <p id="rfc.section.D.4.p.2">HTTP clients and their users might have different or variable capabilities, characteristics or preferences which would influence
     3995      <p id="rfc.section.D.3.p.2">HTTP clients and their users might have different or variable capabilities, characteristics or preferences which would influence
    40003996         which representation, among those available from the server, would be best for the server to deliver. For this reason, HTTP
    40013997         provides mechanisms for "content negotiation" — a process of allowing selection of a representation of a given resource, when
    40023998         more than one is available.
    40033999      </p>
    4004       <p id="rfc.section.D.4.p.3">This specification defines two patterns of content negotiation; "server-driven", where the server selects the representation
     4000      <p id="rfc.section.D.3.p.3">This specification defines two patterns of content negotiation; "server-driven", where the server selects the representation
    40054001         based upon the client's stated preferences, and "agent-driven" negotiation, where the server provides a list of representations
    40064002         for the client to choose from, based upon their metadata. In addition, there are other patterns: some applications use an
     
    40084004         parameters, selects additional resources to invoke. "Transparent Content Negotiation" (<a href="#RFC2295" id="rfc.xref.RFC2295.1"><cite title="Transparent Content Negotiation in HTTP">[RFC2295]</cite></a>) has also been proposed.
    40094005      </p>
    4010       <p id="rfc.section.D.4.p.4">These patterns are all widely used, and have trade-offs in applicability and practicality. In particular, when the number
     4006      <p id="rfc.section.D.3.p.4">These patterns are all widely used, and have trade-offs in applicability and practicality. In particular, when the number
    40114007         of preferences or capabilities to be expressed by a client are large (such as when many different formats are supported by
    40124008         a user-agent), server-driven negotiation becomes unwieldy, and might not be appropriate. Conversely, when the number of representations
    40134009         to choose from is very large, agent-driven negotiation might not be appropriate.
    40144010      </p>
    4015       <p id="rfc.section.D.4.p.5">Note that in all cases, the supplier of representations has the responsibility for determining which representations might
     4011      <p id="rfc.section.D.3.p.5">Note that in all cases, the supplier of representations has the responsibility for determining which representations might
    40164012         be considered to be the "same information".
    40174013      </p>
    4018       <h3 id="rfc.section.D.4.1"><a href="#rfc.section.D.4.1">D.4.1</a>&nbsp;<a id="server-driven.negotiation" href="#server-driven.negotiation">Server-driven Negotiation</a></h3>
    4019       <p id="rfc.section.D.4.1.p.1">If the selection of the best representation for a response is made by an algorithm located at the server, it is called server-driven
     4014      <h3 id="rfc.section.D.3.1"><a href="#rfc.section.D.3.1">D.3.1</a>&nbsp;<a id="server-driven.negotiation" href="#server-driven.negotiation">Server-driven Negotiation</a></h3>
     4015      <p id="rfc.section.D.3.1.p.1">If the selection of the best representation for a response is made by an algorithm located at the server, it is called server-driven
    40204016         negotiation. Selection is based on the available representations of the response (the dimensions over which it can vary; e.g.,
    40214017         language, content-coding, etc.) and the contents of particular header fields in the request message or on other information
    40224018         pertaining to the request (such as the network address of the client).
    40234019      </p>
    4024       <p id="rfc.section.D.4.1.p.2">Server-driven negotiation is advantageous when the algorithm for selecting from among the available representations is difficult
     4020      <p id="rfc.section.D.3.1.p.2">Server-driven negotiation is advantageous when the algorithm for selecting from among the available representations is difficult
    40254021         to describe to the user agent, or when the server desires to send its "best guess" to the client along with the first response
    40264022         (hoping to avoid the round-trip delay of a subsequent request if the "best guess" is good enough for the user). In order to
    40274023         improve the server's guess, the user agent <em class="bcp14">MAY</em> include request header fields (Accept, Accept-Language, Accept-Encoding, etc.) which describe its preferences for such a response.
    40284024      </p>
    4029       <p id="rfc.section.D.4.1.p.3">Server-driven negotiation has disadvantages: </p>
     4025      <p id="rfc.section.D.3.1.p.3">Server-driven negotiation has disadvantages: </p>
    40304026      <ol>
    40314027         <li>It is impossible for the server to accurately determine what might be "best" for any given user, since that would require
     
    40394035         <li>It might limit a public cache's ability to use the same response for multiple user's requests.</li>
    40404036      </ol>
    4041       <p id="rfc.section.D.4.1.p.4">Server-driven negotiation allows the user agent to specify its preferences, but it cannot expect responses to always honor
     4037      <p id="rfc.section.D.3.1.p.4">Server-driven negotiation allows the user agent to specify its preferences, but it cannot expect responses to always honor
    40424038         them. For example, the origin server might not implement server-driven negotiation, or it might decide that sending a response
    40434039         that doesn't conform to them is better than sending a 406 (Not Acceptable) response.
    40444040      </p>
    4045       <p id="rfc.section.D.4.1.p.5">Many of the mechanisms for expressing preferences use quality values to declare relative preference. See <a href="p1-messaging.html#quality.values" title="Quality Values">Section 4.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.52"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for more information.
    4046       </p>
    4047       <p id="rfc.section.D.4.1.p.6">HTTP/1.1 includes the following header fields for enabling server-driven negotiation through description of user agent capabilities
    4048          and user preferences: Accept (<a href="#header.accept" id="rfc.xref.header.accept.4" title="Accept">Appendix&nbsp;D.5.1</a>), Accept-Charset (<a href="#header.accept-charset" id="rfc.xref.header.accept-charset.3" title="Accept-Charset">Appendix&nbsp;D.5.2</a>), Accept-Encoding (<a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.4" title="Accept-Encoding">Appendix&nbsp;D.5.3</a>), Accept-Language (<a href="#header.accept-language" id="rfc.xref.header.accept-language.3" title="Accept-Language">Appendix&nbsp;D.5.4</a>), and User-Agent (<a href="#header.user-agent" id="rfc.xref.header.user-agent.4" title="User-Agent">Section&nbsp;7.10</a>). However, an origin server is not limited to these dimensions and <em class="bcp14">MAY</em> vary the response based on any aspect of the request, including aspects of the connection (e.g., IP address) or information
     4041      <p id="rfc.section.D.3.1.p.5">Many of the mechanisms for expressing preferences use quality values to declare relative preference. See <a href="p1-messaging.html#quality.values" title="Quality Values">Section 4.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.52"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for more information.
     4042      </p>
     4043      <p id="rfc.section.D.3.1.p.6">HTTP/1.1 includes the following header fields for enabling server-driven negotiation through description of user agent capabilities
     4044         and user preferences: Accept (<a href="#header.accept" id="rfc.xref.header.accept.4" title="Accept">Appendix&nbsp;D.4.1</a>), Accept-Charset (<a href="#header.accept-charset" id="rfc.xref.header.accept-charset.3" title="Accept-Charset">Appendix&nbsp;D.4.2</a>), Accept-Encoding (<a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.4" title="Accept-Encoding">Appendix&nbsp;D.4.3</a>), Accept-Language (<a href="#header.accept-language" id="rfc.xref.header.accept-language.3" title="Accept-Language">Appendix&nbsp;D.4.4</a>), and User-Agent (<a href="#header.user-agent" id="rfc.xref.header.user-agent.4" title="User-Agent">Section&nbsp;7.10</a>). However, an origin server is not limited to these dimensions and <em class="bcp14">MAY</em> vary the response based on any aspect of the request, including aspects of the connection (e.g., IP address) or information
    40494045         within extension header fields not defined by this specification.
    40504046      </p>
    4051       <div class="note" id="rfc.section.D.4.1.p.7">
     4047      <div class="note" id="rfc.section.D.3.1.p.7">
    40524048         <p> <b>Note:</b> In practice, User-Agent based negotiation is fragile, because new clients might not be recognized.
    40534049         </p>
    40544050      </div>
    4055       <p id="rfc.section.D.4.1.p.8">The Vary header field (<a href="p6-cache.html#header.vary" title="Vary">Section 3.5</a> of <a href="#Part6" id="rfc.xref.Part6.19"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>) can be used to express the parameters the server uses to select a representation that is subject to server-driven negotiation.
    4056       </p>
    4057       <h3 id="rfc.section.D.4.2"><a href="#rfc.section.D.4.2">D.4.2</a>&nbsp;<a id="agent-driven.negotiation" href="#agent-driven.negotiation">Agent-driven Negotiation</a></h3>
    4058       <p id="rfc.section.D.4.2.p.1">With agent-driven negotiation, selection of the best representation for a response is performed by the user agent after receiving
     4051      <p id="rfc.section.D.3.1.p.8">The Vary header field (<a href="p6-cache.html#header.vary" title="Vary">Section 3.5</a> of <a href="#Part6" id="rfc.xref.Part6.19"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>) can be used to express the parameters the server uses to select a representation that is subject to server-driven negotiation.
     4052      </p>
     4053      <h3 id="rfc.section.D.3.2"><a href="#rfc.section.D.3.2">D.3.2</a>&nbsp;<a id="agent-driven.negotiation" href="#agent-driven.negotiation">Agent-driven Negotiation</a></h3>
     4054      <p id="rfc.section.D.3.2.p.1">With agent-driven negotiation, selection of the best representation for a response is performed by the user agent after receiving
    40594055         an initial response from the origin server. Selection is based on a list of the available representations of the response
    40604056         included within the header fields or body of the initial response, with each representation identified by its own URI. Selection
     
    40624058         user selecting from a generated (possibly hypertext) menu.
    40634059      </p>
    4064       <p id="rfc.section.D.4.2.p.2">Agent-driven negotiation is advantageous when the response would vary over commonly-used dimensions (such as type, language,
     4060      <p id="rfc.section.D.3.2.p.2">Agent-driven negotiation is advantageous when the response would vary over commonly-used dimensions (such as type, language,
    40654061         or encoding), when the origin server is unable to determine a user agent's capabilities from examining the request, and generally
    40664062         when public caches are used to distribute server load and reduce network usage.
    40674063      </p>
    4068       <p id="rfc.section.D.4.2.p.3">Agent-driven negotiation suffers from the disadvantage of needing a second request to obtain the best alternate representation.
     4064      <p id="rfc.section.D.3.2.p.3">Agent-driven negotiation suffers from the disadvantage of needing a second request to obtain the best alternate representation.
    40694065         This second request is only efficient when caching is used. In addition, this specification does not define any mechanism
    40704066         for supporting automatic selection, though it also does not prevent any such mechanism from being developed as an extension
    40714067         and used within HTTP/1.1.
    40724068      </p>
    4073       <p id="rfc.section.D.4.2.p.4">This specification defines the 300 (Multiple Choices) and 406 (Not Acceptable) status codes for enabling agent-driven negotiation
     4069      <p id="rfc.section.D.3.2.p.4">This specification defines the 300 (Multiple Choices) and 406 (Not Acceptable) status codes for enabling agent-driven negotiation
    40744070         when the server is unwilling or unable to provide a varying response using server-driven negotiation.
    40754071      </p>
    4076       <h2 id="rfc.section.D.5"><a href="#rfc.section.D.5">D.5</a>&nbsp;<a id="header.field.definitions3" href="#header.field.definitions3">Header Field Definitions</a></h2>
    4077       <p id="rfc.section.D.5.p.1">This section defines the syntax and semantics of HTTP/1.1 header fields related to the payload of messages.</p>
     4072      <h2 id="rfc.section.D.4"><a href="#rfc.section.D.4">D.4</a>&nbsp;<a id="header.field.definitions3" href="#header.field.definitions3">Header Field Definitions</a></h2>
     4073      <p id="rfc.section.D.4.p.1">This section defines the syntax and semantics of HTTP/1.1 header fields related to the payload of messages.</p>
    40784074      <div id="rfc.iref.a.2"></div>
    40794075      <div id="rfc.iref.h.12"></div>
    4080       <h3 id="rfc.section.D.5.1"><a href="#rfc.section.D.5.1">D.5.1</a>&nbsp;<a id="header.accept" href="#header.accept">Accept</a></h3>
    4081       <p id="rfc.section.D.5.1.p.1">The "Accept" header field can be used by user agents to specify response media types that are acceptable. Accept header fields
     4076      <h3 id="rfc.section.D.4.1"><a href="#rfc.section.D.4.1">D.4.1</a>&nbsp;<a id="header.accept" href="#header.accept">Accept</a></h3>
     4077      <p id="rfc.section.D.4.1.p.1">The "Accept" header field can be used by user agents to specify response media types that are acceptable. Accept header fields
    40824078         can be used to indicate that the request is specifically limited to a small set of desired types, as in the case of a request
    40834079         for an in-line image.
     
    40914087  <a href="#header.accept" class="smpl">accept-params</a>  = <a href="#core.rules" class="smpl">OWS</a> ";" <a href="#core.rules" class="smpl">OWS</a> "q=" <a href="#abnf.dependencies" class="smpl">qvalue</a> *( <a href="#header.accept" class="smpl">accept-ext</a> )
    40924088  <a href="#header.accept" class="smpl">accept-ext</a>     = <a href="#core.rules" class="smpl">OWS</a> ";" <a href="#core.rules" class="smpl">OWS</a> <a href="#core.rules" class="smpl">token</a> [ "=" <a href="#core.rules" class="smpl">word</a> ]
    4093 </pre><p id="rfc.section.D.5.1.p.3">The asterisk "*" character is used to group media types into ranges, with "*/*" indicating all media types and "type/*" indicating
     4089</pre><p id="rfc.section.D.4.1.p.3">The asterisk "*" character is used to group media types into ranges, with "*/*" indicating all media types and "type/*" indicating
    40944090         all subtypes of that type. The media-range <em class="bcp14">MAY</em> include media type parameters that are applicable to that range.
    40954091      </p>
    4096       <p id="rfc.section.D.5.1.p.4">Each media-range <em class="bcp14">MAY</em> be followed by one or more accept-params, beginning with the "q" parameter for indicating a relative quality factor. The first
     4092      <p id="rfc.section.D.4.1.p.4">Each media-range <em class="bcp14">MAY</em> be followed by one or more accept-params, beginning with the "q" parameter for indicating a relative quality factor. The first
    40974093         "q" parameter (if any) separates the media-range parameter(s) from the accept-params. Quality factors allow the user or user
    40984094         agent to indicate the relative degree of preference for that media-range, using the qvalue scale from 0 to 1 (<a href="p1-messaging.html#quality.values" title="Quality Values">Section 4.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.53"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). The default value is q=1.
    40994095      </p>
    4100       <div class="note" id="rfc.section.D.5.1.p.5">
     4096      <div class="note" id="rfc.section.D.4.1.p.5">
    41014097         <p> <b>Note:</b> Use of the "q" parameter name to separate media type parameters from Accept extension parameters is due to historical practice.
    41024098            Although this prevents any media type parameter named "q" from being used with a media range, such an event is believed to
     
    41054101         </p>
    41064102      </div>
    4107       <p id="rfc.section.D.5.1.p.6">The example</p>
     4103      <p id="rfc.section.D.4.1.p.6">The example</p>
    41084104      <div id="rfc.figure.u.47"></div><pre class="text">  Accept: audio/*; q=0.2, audio/basic
    4109 </pre><p id="rfc.section.D.5.1.p.8"> <em class="bcp14">SHOULD</em> be interpreted as "I prefer audio/basic, but send me any audio type if it is the best available after an 80% mark-down in
     4105</pre><p id="rfc.section.D.4.1.p.8"> <em class="bcp14">SHOULD</em> be interpreted as "I prefer audio/basic, but send me any audio type if it is the best available after an 80% mark-down in
    41104106         quality".
    41114107      </p>
    4112       <p id="rfc.section.D.5.1.p.9">A request without any Accept header field implies that the user agent will accept any media type in response. If an Accept
     4108      <p id="rfc.section.D.4.1.p.9">A request without any Accept header field implies that the user agent will accept any media type in response. If an Accept
    41134109         header field is present in a request and none of the available representations for the response have a media type that is
    41144110         listed as acceptable, the origin server <em class="bcp14">MAY</em> either honor the Accept header field by sending a 406 (Not Acceptable) response or disregard the Accept header field by treating
    41154111         the response as if it is not subject to content negotiation.
    41164112      </p>
    4117       <p id="rfc.section.D.5.1.p.10">A more elaborate example is</p>
     4113      <p id="rfc.section.D.4.1.p.10">A more elaborate example is</p>
    41184114      <div id="rfc.figure.u.48"></div><pre class="text">  Accept: text/plain; q=0.5, text/html,
    41194115          text/x-dvi; q=0.8, text/x-c
    4120 </pre><p id="rfc.section.D.5.1.p.12">Verbally, this would be interpreted as "text/html and text/x-c are the preferred media types, but if they do not exist, then
     4116</pre><p id="rfc.section.D.4.1.p.12">Verbally, this would be interpreted as "text/html and text/x-c are the preferred media types, but if they do not exist, then
    41214117         send the text/x-dvi representation, and if that does not exist, send the text/plain representation".
    41224118      </p>
    4123       <p id="rfc.section.D.5.1.p.13">Media ranges can be overridden by more specific media ranges or specific media types. If more than one media range applies
     4119      <p id="rfc.section.D.4.1.p.13">Media ranges can be overridden by more specific media ranges or specific media types. If more than one media range applies
    41244120         to a given type, the most specific reference has precedence. For example,
    41254121      </p>
    41264122      <div id="rfc.figure.u.49"></div><pre class="text">  Accept: text/*, text/plain, text/plain;format=flowed, */*
    4127 </pre><p id="rfc.section.D.5.1.p.15">have the following precedence: </p>
     4123</pre><p id="rfc.section.D.4.1.p.15">have the following precedence: </p>
    41284124      <ol>
    41294125         <li>text/plain;format=flowed</li>
     
    41324128         <li>*/*</li>
    41334129      </ol>
    4134       <p id="rfc.section.D.5.1.p.16">The media type quality factor associated with a given type is determined by finding the media range with the highest precedence
     4130      <p id="rfc.section.D.4.1.p.16">The media type quality factor associated with a given type is determined by finding the media range with the highest precedence
    41354131         which matches that type. For example,
    41364132      </p>
    41374133      <div id="rfc.figure.u.50"></div><pre class="text">  Accept: text/*;q=0.3, text/html;q=0.7, text/html;level=1,
    41384134          text/html;level=2;q=0.4, */*;q=0.5
    4139 </pre><p id="rfc.section.D.5.1.p.18">would cause the following values to be associated:</p>
     4135</pre><p id="rfc.section.D.4.1.p.18">would cause the following values to be associated:</p>
    41404136      <div id="rfc.table.u.7">
    41414137         <table class="tt full left" cellpadding="3" cellspacing="0">
     
    41744170         </table>
    41754171      </div>
    4176       <p id="rfc.section.D.5.1.p.19"> <b>Note:</b> A user agent might be provided with a default set of quality values for certain media ranges. However, unless the user agent
     4172      <p id="rfc.section.D.4.1.p.19"> <b>Note:</b> A user agent might be provided with a default set of quality values for certain media ranges. However, unless the user agent
    41774173         is a closed system which cannot interact with other rendering agents, this default set ought to be configurable by the user.
    41784174      </p>
    41794175      <div id="rfc.iref.a.3"></div>
    41804176      <div id="rfc.iref.h.13"></div>
    4181       <h3 id="rfc.section.D.5.2"><a href="#rfc.section.D.5.2">D.5.2</a>&nbsp;<a id="header.accept-charset" href="#header.accept-charset">Accept-Charset</a></h3>
    4182       <p id="rfc.section.D.5.2.p.1">The "Accept-Charset" header field can be used by user agents to indicate what character encodings are acceptable in a response
     4177      <h3 id="rfc.section.D.4.2"><a href="#rfc.section.D.4.2">D.4.2</a>&nbsp;<a id="header.accept-charset" href="#header.accept-charset">Accept-Charset</a></h3>
     4178      <p id="rfc.section.D.4.2.p.1">The "Accept-Charset" header field can be used by user agents to indicate what character encodings are acceptable in a response
    41834179         payload. This field allows clients capable of understanding more comprehensive or special-purpose character encodings to signal
    41844180         that capability to a server which is capable of representing documents in those character encodings.
     
    41864182      <div id="rfc.figure.u.51"></div><pre class="inline"><span id="rfc.iref.g.50"></span>  <a href="#header.accept-charset" class="smpl">Accept-Charset</a> = 1#( ( <a href="#rule.charset" class="smpl">charset</a> / "*" )
    41874183                         [ <a href="#core.rules" class="smpl">OWS</a> ";" <a href="#core.rules" class="smpl">OWS</a> "q=" <a href="#abnf.dependencies" class="smpl">qvalue</a> ] )
    4188 </pre><p id="rfc.section.D.5.2.p.3">Character encoding values (a.k.a., charsets) are described in <a href="#character.sets" title="Character Encodings (charset)">Appendix&nbsp;D.1.1</a>. Each charset <em class="bcp14">MAY</em> be given an associated quality value which represents the user's preference for that charset. The default value is q=1. An
     4184</pre><p id="rfc.section.D.4.2.p.3">Character encoding values (a.k.a., charsets) are described in <a href="#character.sets" title="Character Encodings (charset)">Section&nbsp;6.3</a>. Each charset <em class="bcp14">MAY</em> be given an associated quality value which represents the user's preference for that charset. The default value is q=1. An
    41894185         example is
    41904186      </p>
    41914187      <div id="rfc.figure.u.52"></div><pre class="text">  Accept-Charset: iso-8859-5, unicode-1-1;q=0.8
    4192 </pre><p id="rfc.section.D.5.2.p.5">The special value "*", if present in the Accept-Charset field, matches every character encoding which is not mentioned elsewhere
     4188</pre><p id="rfc.section.D.4.2.p.5">The special value "*", if present in the Accept-Charset field, matches every character encoding which is not mentioned elsewhere
    41934189         in the Accept-Charset field. If no "*" is present in an Accept-Charset field, then all character encodings not explicitly
    41944190         mentioned get a quality value of 0.
    41954191      </p>
    4196       <p id="rfc.section.D.5.2.p.6">A request without any Accept-Charset header field implies that the user agent will accept any character encoding in response.
     4192      <p id="rfc.section.D.4.2.p.6">A request without any Accept-Charset header field implies that the user agent will accept any character encoding in response.
    41974193         If an Accept-Charset header field is present in a request and none of the available representations for the response have
    41984194         a character encoding that is listed as acceptable, the origin server <em class="bcp14">MAY</em> either honor the Accept-Charset header field by sending a 406 (Not Acceptable) response or disregard the Accept-Charset header
     
    42014197      <div id="rfc.iref.a.4"></div>
    42024198      <div id="rfc.iref.h.14"></div>
    4203       <h3 id="rfc.section.D.5.3"><a href="#rfc.section.D.5.3">D.5.3</a>&nbsp;<a id="header.accept-encoding" href="#header.accept-encoding">Accept-Encoding</a></h3>
    4204       <p id="rfc.section.D.5.3.p.1">The "Accept-Encoding" header field can be used by user agents to indicate what response content-codings (<a href="#content.codings" title="Content Codings">Appendix&nbsp;D.1.2</a>) are acceptable in the response. An "identity" token is used as a synonym for "no encoding" in order to communicate when
     4199      <h3 id="rfc.section.D.4.3"><a href="#rfc.section.D.4.3">D.4.3</a>&nbsp;<a id="header.accept-encoding" href="#header.accept-encoding">Accept-Encoding</a></h3>
     4200      <p id="rfc.section.D.4.3.p.1">The "Accept-Encoding" header field can be used by user agents to indicate what response content-codings (<a href="#content.codings" title="Content Codings">Section&nbsp;6.4</a>) are acceptable in the response. An "identity" token is used as a synonym for "no encoding" in order to communicate when
    42054201         no encoding is preferred.
    42064202      </p>
    42074203      <div id="rfc.figure.u.53"></div><pre class="inline"><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></span>  <a href="#header.accept-encoding" class="smpl">Accept-Encoding</a>  = #( <a href="#header.accept-encoding" class="smpl">codings</a> [ <a href="#core.rules" class="smpl">OWS</a> ";" <a href="#core.rules" class="smpl">OWS</a> "q=" <a href="#abnf.dependencies" class="smpl">qvalue</a> ] )
    42084204  <a href="#header.accept-encoding" class="smpl">codings</a>          = <a href="#content.codings" class="smpl">content-coding</a> / "identity" / "*"
    4209 </pre><p id="rfc.section.D.5.3.p.3">Each codings value <em class="bcp14">MAY</em> be given an associated quality value which represents the preference for that encoding. The default value is q=1.
    4210       </p>
    4211       <p id="rfc.section.D.5.3.p.4">For example,</p>
     4205</pre><p id="rfc.section.D.4.3.p.3">Each codings value <em class="bcp14">MAY</em> be given an associated quality value which represents the preference for that encoding. The default value is q=1.
     4206      </p>
     4207      <p id="rfc.section.D.4.3.p.4">For example,</p>
    42124208      <div id="rfc.figure.u.54"></div><pre class="text">  Accept-Encoding: compress, gzip
    42134209  Accept-Encoding:
     
    42154211  Accept-Encoding: compress;q=0.5, gzip;q=1.0
    42164212  Accept-Encoding: gzip;q=1.0, identity; q=0.5, *;q=0
    4217 </pre><p id="rfc.section.D.5.3.p.6">A server tests whether a content-coding for a given representation is acceptable, according to an Accept-Encoding field, using
     4213</pre><p id="rfc.section.D.4.3.p.6">A server tests whether a content-coding for a given representation is acceptable, according to an Accept-Encoding field, using
    42184214         these rules:
    42194215      </p>
     
    42304226         <li>If multiple content-codings are acceptable, then the acceptable content-coding with the highest non-zero qvalue is preferred.</li>
    42314227      </ol>
    4232       <p id="rfc.section.D.5.3.p.7">An Accept-Encoding header field with a combined field-value that is empty implies that the user agent does not want any content-coding
     4228      <p id="rfc.section.D.4.3.p.7">An Accept-Encoding header field with a combined field-value that is empty implies that the user agent does not want any content-coding
    42334229         in response. If an Accept-Encoding header field is present in a request and none of the available representations for the
    42344230         response have a content-coding that is listed as acceptable, the origin server <em class="bcp14">SHOULD</em> send a response without any content-coding.
    42354231      </p>
    4236       <p id="rfc.section.D.5.3.p.8">A request without an Accept-Encoding header field implies that the user agent will accept any content-coding in response,
     4232      <p id="rfc.section.D.4.3.p.8">A request without an Accept-Encoding header field implies that the user agent will accept any content-coding in response,
    42374233         but a representation without content-coding is preferred for compatibility with the widest variety of user agents.
    42384234      </p>
    4239       <div class="note" id="rfc.section.D.5.3.p.9">
     4235      <div class="note" id="rfc.section.D.4.3.p.9">
    42404236         <p> <b>Note:</b> Most HTTP/1.0 applications do not recognize or obey qvalues associated with content-codings. This means that qvalues will
    42414237            not work and are not permitted with x-gzip or x-compress.
     
    42444240      <div id="rfc.iref.a.5"></div>
    42454241      <div id="rfc.iref.h.15"></div>
    4246       <h3 id="rfc.section.D.5.4"><a href="#rfc.section.D.5.4">D.5.4</a>&nbsp;<a id="header.accept-language" href="#header.accept-language">Accept-Language</a></h3>
    4247       <p id="rfc.section.D.5.4.p.1">The "Accept-Language" header field can be used by user agents to indicate the set of natural languages that are preferred
    4248          in the response. Language tags are defined in <a href="#language.tags" title="Language Tags">Appendix&nbsp;D.1.4</a>.
     4242      <h3 id="rfc.section.D.4.4"><a href="#rfc.section.D.4.4">D.4.4</a>&nbsp;<a id="header.accept-language" href="#header.accept-language">Accept-Language</a></h3>
     4243      <p id="rfc.section.D.4.4.p.1">The "Accept-Language" header field can be used by user agents to indicate the set of natural languages that are preferred
     4244         in the response. Language tags are defined in <a href="#language.tags" title="Language Tags">Section&nbsp;6.6</a>.
    42494245      </p>
    42504246      <div id="rfc.figure.u.55"></div><pre class="inline"><span id="rfc.iref.g.53"></span><span id="rfc.iref.g.54"></span>  <a href="#header.accept-language" class="smpl">Accept-Language</a> =
     
    42524248  <a href="#header.accept-language" class="smpl">language-range</a>  =
    42534249            &lt;language-range, defined in <a href="#RFC4647" id="rfc.xref.RFC4647.1"><cite title="Matching of Language Tags">[RFC4647]</cite></a>, <a href="http://tools.ietf.org/html/rfc4647#section-2.1">Section 2.1</a>&gt;
    4254 </pre><p id="rfc.section.D.5.4.p.3">Each language-range can be given an associated quality value which represents an estimate of the user's preference for the
     4250</pre><p id="rfc.section.D.4.4.p.3">Each language-range can be given an associated quality value which represents an estimate of the user's preference for the
    42554251         languages specified by that range. The quality value defaults to "q=1". For example,
    42564252      </p>
    42574253      <div id="rfc.figure.u.56"></div><pre class="text">  Accept-Language: da, en-gb;q=0.8, en;q=0.7
    4258 </pre><p id="rfc.section.D.5.4.p.5">would mean: "I prefer Danish, but will accept British English and other types of English". (see also <a href="http://tools.ietf.org/html/rfc4647#section-2.3">Section 2.3</a> of <a href="#RFC4647" id="rfc.xref.RFC4647.2"><cite title="Matching of Language Tags">[RFC4647]</cite></a>)
    4259       </p>
    4260       <p id="rfc.section.D.5.4.p.6">For matching, <a href="http://tools.ietf.org/html/rfc4647#section-3">Section 3</a> of <a href="#RFC4647" id="rfc.xref.RFC4647.3"><cite title="Matching of Language Tags">[RFC4647]</cite></a> defines several matching schemes. Implementations can offer the most appropriate matching scheme for their requirements.
    4261       </p>
    4262       <div class="note" id="rfc.section.D.5.4.p.7">
     4254</pre><p id="rfc.section.D.4.4.p.5">would mean: "I prefer Danish, but will accept British English and other types of English". (see also <a href="http://tools.ietf.org/html/rfc4647#section-2.3">Section 2.3</a> of <a href="#RFC4647" id="rfc.xref.RFC4647.2"><cite title="Matching of Language Tags">[RFC4647]</cite></a>)
     4255      </p>
     4256      <p id="rfc.section.D.4.4.p.6">For matching, <a href="http://tools.ietf.org/html/rfc4647#section-3">Section 3</a> of <a href="#RFC4647" id="rfc.xref.RFC4647.3"><cite title="Matching of Language Tags">[RFC4647]</cite></a> defines several matching schemes. Implementations can offer the most appropriate matching scheme for their requirements.
     4257      </p>
     4258      <div class="note" id="rfc.section.D.4.4.p.7">
    42634259         <p> <b>Note:</b> The "Basic Filtering" scheme (<a href="#RFC4647" id="rfc.xref.RFC4647.4"><cite title="Matching of Language Tags">[RFC4647]</cite></a>, <a href="http://tools.ietf.org/html/rfc4647#section-3.3.1">Section 3.3.1</a>) is identical to the matching scheme that was previously defined in <a href="http://tools.ietf.org/html/rfc2616#section-14.4">Section 14.4</a> of <a href="#RFC2616" id="rfc.xref.RFC2616.4"><cite title="Hypertext Transfer Protocol -- HTTP/1.1">[RFC2616]</cite></a>.
    42644260         </p>
    42654261      </div>
    4266       <p id="rfc.section.D.5.4.p.8">It might be contrary to the privacy expectations of the user to send an Accept-Language header field with the complete linguistic
    4267          preferences of the user in every request. For a discussion of this issue, see <a href="#privacy.issues.connected.to.accept.header.fields" title="Privacy Issues Connected to Accept Header Fields">Appendix&nbsp;D.7.1</a>.
    4268       </p>
    4269       <p id="rfc.section.D.5.4.p.9">As intelligibility is highly dependent on the individual user, it is recommended that client applications make the choice
     4262      <p id="rfc.section.D.4.4.p.8">It might be contrary to the privacy expectations of the user to send an Accept-Language header field with the complete linguistic
     4263         preferences of the user in every request. For a discussion of this issue, see <a href="#privacy.issues.connected.to.accept.header.fields" title="Privacy Issues Connected to Accept Header Fields">Appendix&nbsp;D.6.1</a>.
     4264      </p>
     4265      <p id="rfc.section.D.4.4.p.9">As intelligibility is highly dependent on the individual user, it is recommended that client applications make the choice
    42704266         of linguistic preference available to the user. If the choice is not made available, then the Accept-Language header field <em class="bcp14">MUST NOT</em> be given in the request.
    42714267      </p>
    4272       <div class="note" id="rfc.section.D.5.4.p.10">
     4268      <div class="note" id="rfc.section.D.4.4.p.10">
    42734269         <p> <b>Note:</b> When making the choice of linguistic preference available to the user, we remind implementors of the fact that users are not
    42744270            familiar with the details of language matching as described above, and ought to be provided appropriate guidance. As an example,
     
    42794275      <div id="rfc.iref.c.7"></div>
    42804276      <div id="rfc.iref.h.16"></div>
    4281       <h3 id="rfc.section.D.5.5"><a href="#rfc.section.D.5.5">D.5.5</a>&nbsp;<a id="header.content-encoding" href="#header.content-encoding">Content-Encoding</a></h3>
    4282       <p id="rfc.section.D.5.5.p.1">The "Content-Encoding" header field indicates what content-codings have been applied to the representation beyond those inherent
     4277      <h3 id="rfc.section.D.4.5"><a href="#rfc.section.D.4.5">D.4.5</a>&nbsp;<a id="header.content-encoding" href="#header.content-encoding">Content-Encoding</a></h3>
     4278      <p id="rfc.section.D.4.5.p.1">The "Content-Encoding" header field indicates what content-codings have been applied to the representation beyond those inherent
    42834279         in the media type, and thus what decoding mechanisms have to be applied in order to obtain the media-type referenced by the
    42844280         Content-Type header field. Content-Encoding is primarily used to allow a representation to be compressed without losing the
     
    42864282      </p>
    42874283      <div id="rfc.figure.u.57"></div><pre class="inline"><span id="rfc.iref.g.55"></span>  <a href="#header.content-encoding" class="smpl">Content-Encoding</a> = 1#<a href="#content.codings" class="smpl">content-coding</a>
    4288 </pre><p id="rfc.section.D.5.5.p.3">Content codings are defined in <a href="#content.codings" title="Content Codings">Appendix&nbsp;D.1.2</a>. An example of its use is
     4284</pre><p id="rfc.section.D.4.5.p.3">Content codings are defined in <a href="#content.codings" title="Content Codings">Section&nbsp;6.4</a>. An example of its use is
    42894285      </p>
    42904286      <div id="rfc.figure.u.58"></div><pre class="text">  Content-Encoding: gzip
    4291 </pre><p id="rfc.section.D.5.5.p.5">The content-coding is a characteristic of the representation. Typically, the representation body is stored with this encoding
     4287</pre><p id="rfc.section.D.4.5.p.5">The content-coding is a characteristic of the representation. Typically, the representation body is stored with this encoding
    42924288         and is only decoded before rendering or analogous usage. However, a transforming proxy <em class="bcp14">MAY</em> modify the content-coding if the new coding is known to be acceptable to the recipient, unless the "no-transform" cache-control
    42934289         directive is present in the message.
    42944290      </p>
    4295       <p id="rfc.section.D.5.5.p.6">If the media type includes an inherent encoding, such as a data format that is always compressed, then that encoding would
     4291      <p id="rfc.section.D.4.5.p.6">If the media type includes an inherent encoding, such as a data format that is always compressed, then that encoding would
    42964292         not be restated as a Content-Encoding even if it happens to be the same algorithm as one of the content-codings. Such a content-coding
    42974293         would only be listed if, for some bizarre reason, it is applied a second time to form the representation. Likewise, an origin
     
    43004296         response (e.g., open a "Save as ..." dialog instead of automatic decompression and rendering of content).
    43014297      </p>
    4302       <p id="rfc.section.D.5.5.p.7">A representation that has a content-coding applied to it <em class="bcp14">MUST</em> include a Content-Encoding header field (<a href="#header.content-encoding" id="rfc.xref.header.content-encoding.4" title="Content-Encoding">Appendix&nbsp;D.5.5</a>) that lists the content-coding(s) applied.
    4303       </p>
    4304       <p id="rfc.section.D.5.5.p.8">If multiple encodings have been applied to a representation, the content codings <em class="bcp14">MUST</em> be listed in the order in which they were applied. Additional information about the encoding parameters <em class="bcp14">MAY</em> be provided by other header fields not defined by this specification.
    4305       </p>
    4306       <p id="rfc.section.D.5.5.p.9">If the content-coding of a representation in a request message is not acceptable to the origin server, the server <em class="bcp14">SHOULD</em> respond with a status code of 415 (Unsupported Media Type).
     4298      <p id="rfc.section.D.4.5.p.7">A representation that has a content-coding applied to it <em class="bcp14">MUST</em> include a Content-Encoding header field (<a href="#header.content-encoding" id="rfc.xref.header.content-encoding.4" title="Content-Encoding">Appendix&nbsp;D.4.5</a>) that lists the content-coding(s) applied.
     4299      </p>
     4300      <p id="rfc.section.D.4.5.p.8">If multiple encodings have been applied to a representation, the content codings <em class="bcp14">MUST</em> be listed in the order in which they were applied. Additional information about the encoding parameters <em class="bcp14">MAY</em> be provided by other header fields not defined by this specification.
     4301      </p>
     4302      <p id="rfc.section.D.4.5.p.9">If the content-coding of a representation in a request message is not acceptable to the origin server, the server <em class="bcp14">SHOULD</em> respond with a status code of 415 (Unsupported Media Type).
    43074303      </p>
    43084304      <div id="rfc.iref.c.8"></div>
    43094305      <div id="rfc.iref.h.17"></div>
    4310       <h3 id="rfc.section.D.5.6"><a href="#rfc.section.D.5.6">D.5.6</a>&nbsp;<a id="header.content-language" href="#header.content-language">Content-Language</a></h3>
    4311       <p id="rfc.section.D.5.6.p.1">The "Content-Language" header field describes the natural language(s) of the intended audience for the representation. Note
     4306      <h3 id="rfc.section.D.4.6"><a href="#rfc.section.D.4.6">D.4.6</a>&nbsp;<a id="header.content-language" href="#header.content-language">Content-Language</a></h3>
     4307      <p id="rfc.section.D.4.6.p.1">The "Content-Language" header field describes the natural language(s) of the intended audience for the representation. Note
    43124308         that this might not be equivalent to all the languages used within the representation.
    43134309      </p>
    43144310      <div id="rfc.figure.u.59"></div><pre class="inline"><span id="rfc.iref.g.56"></span>  <a href="#header.content-language" class="smpl">Content-Language</a> = 1#<a href="#language.tags" class="smpl">language-tag</a>
    4315 </pre><p id="rfc.section.D.5.6.p.3">Language tags are defined in <a href="#language.tags" title="Language Tags">Appendix&nbsp;D.1.4</a>. The primary purpose of Content-Language is to allow a user to identify and differentiate representations according to the
     4311</pre><p id="rfc.section.D.4.6.p.3">Language tags are defined in <a href="#language.tags" title="Language Tags">Section&nbsp;6.6</a>. The primary purpose of Content-Language is to allow a user to identify and differentiate representations according to the
    43164312         user's own preferred language. Thus, if the body content is intended only for a Danish-literate audience, the appropriate
    43174313         field is
    43184314      </p>
    43194315      <div id="rfc.figure.u.60"></div><pre class="text">  Content-Language: da
    4320 </pre><p id="rfc.section.D.5.6.p.5">If no Content-Language is specified, the default is that the content is intended for all language audiences. This might mean
     4316</pre><p id="rfc.section.D.4.6.p.5">If no Content-Language is specified, the default is that the content is intended for all language audiences. This might mean
    43214317         that the sender does not consider it to be specific to any natural language, or that the sender does not know for which language
    43224318         it is intended.
    43234319      </p>
    4324       <p id="rfc.section.D.5.6.p.6">Multiple languages <em class="bcp14">MAY</em> be listed for content that is intended for multiple audiences. For example, a rendition of the "Treaty of Waitangi", presented
     4320      <p id="rfc.section.D.4.6.p.6">Multiple languages <em class="bcp14">MAY</em> be listed for content that is intended for multiple audiences. For example, a rendition of the "Treaty of Waitangi", presented
    43254321         simultaneously in the original Maori and English versions, would call for
    43264322      </p>
    43274323      <div id="rfc.figure.u.61"></div><pre class="text">  Content-Language: mi, en
    4328 </pre><p id="rfc.section.D.5.6.p.8">However, just because multiple languages are present within a representation does not mean that it is intended for multiple
     4324</pre><p id="rfc.section.D.4.6.p.8">However, just because multiple languages are present within a representation does not mean that it is intended for multiple
    43294325         linguistic audiences. An example would be a beginner's language primer, such as "A First Lesson in Latin", which is clearly
    43304326         intended to be used by an English-literate audience. In this case, the Content-Language would properly only include "en".
    43314327      </p>
    4332       <p id="rfc.section.D.5.6.p.9">Content-Language <em class="bcp14">MAY</em> be applied to any media type — it is not limited to textual documents.
     4328      <p id="rfc.section.D.4.6.p.9">Content-Language <em class="bcp14">MAY</em> be applied to any media type — it is not limited to textual documents.
    43334329      </p>
    43344330      <div id="rfc.iref.c.9"></div>
    43354331      <div id="rfc.iref.h.18"></div>
    4336       <h3 id="rfc.section.D.5.7"><a href="#rfc.section.D.5.7">D.5.7</a>&nbsp;<a id="header.content-location" href="#header.content-location">Content-Location</a></h3>
    4337       <p id="rfc.section.D.5.7.p.1">The "Content-Location" header field supplies a URI that can be used as a specific identifier for the representation in this
     4332      <h3 id="rfc.section.D.4.7"><a href="#rfc.section.D.4.7">D.4.7</a>&nbsp;<a id="header.content-location" href="#header.content-location">Content-Location</a></h3>
     4333      <p id="rfc.section.D.4.7.p.1">The "Content-Location" header field supplies a URI that can be used as a specific identifier for the representation in this
    43384334         message. In other words, if one were to perform a GET on this URI at the time of this message's generation, then a 200 response
    43394335         would contain the same representation that is enclosed as payload in this message.
    43404336      </p>
    43414337      <div id="rfc.figure.u.62"></div><pre class="inline"><span id="rfc.iref.g.57"></span>  <a href="#header.content-location" class="smpl">Content-Location</a> = <a href="#abnf.dependencies" class="smpl">absolute-URI</a> / <a href="#abnf.dependencies" class="smpl">partial-URI</a>
    4342 </pre><p id="rfc.section.D.5.7.p.3">The Content-Location value is not a replacement for the effective Request URI (<a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.55"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). It is representation metadata. It has the same syntax and semantics as the header field of the same name defined for MIME
     4338</pre><p id="rfc.section.D.4.7.p.3">The Content-Location value is not a replacement for the effective Request URI (<a href="p1-messaging.html#effective.request.uri" title="Effective Request URI">Section 5.5</a> of <a href="#Part1" id="rfc.xref.Part1.55"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). It is representation metadata. It has the same syntax and semantics as the header field of the same name defined for MIME
    43434339         body parts in <a href="http://tools.ietf.org/html/rfc2557#section-4">Section 4</a> of <a href="#RFC2557" id="rfc.xref.RFC2557.1"><cite title="MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)">[RFC2557]</cite></a>. However, its appearance in an HTTP message has some special implications for HTTP recipients.
    43444340      </p>
    4345       <p id="rfc.section.D.5.7.p.4">If Content-Location is included in a response message and its value is the same as the effective request URI, then the response
     4341      <p id="rfc.section.D.4.7.p.4">If Content-Location is included in a response message and its value is the same as the effective request URI, then the response
    43464342         payload <em class="bcp14">SHOULD</em> be considered a current representation of that resource. For a GET or HEAD request, this is the same as the default semantics
    43474343         when no Content-Location is provided by the server. For a state-changing request like PUT or POST, it implies that the server's
     
    43504346         need for a subsequent GET request.
    43514347      </p>
    4352       <p id="rfc.section.D.5.7.p.5">If Content-Location is included in a response message and its value differs from the effective request URI, then the origin
     4348      <p id="rfc.section.D.4.7.p.5">If Content-Location is included in a response message and its value differs from the effective request URI, then the origin
    43534349         server is informing recipients that this representation has its own, presumably more specific, identifier. For a GET or HEAD
    43544350         request, this is an indication that the effective request URI identifies a resource that is subject to content negotiation
     
    43594355         in the future.
    43604356      </p>
    4361       <p id="rfc.section.D.5.7.p.6">If Content-Location is included in a request message, then it <em class="bcp14">MAY</em> be interpreted by the origin server as an indication of where the user agent originally obtained the content of the enclosed
     4357      <p id="rfc.section.D.4.7.p.6">If Content-Location is included in a request message, then it <em class="bcp14">MAY</em> be interpreted by the origin server as an indication of where the user agent originally obtained the content of the enclosed
    43624358         representation (prior to any subsequent modification of the content by that user agent). In other words, the user agent is
    43634359         providing the same representation metadata that it received with the original representation. However, such interpretation <em class="bcp14">MUST NOT</em> be used to alter the semantics of the method requested by the client. For example, if a client makes a PUT request on a negotiated
     
    43674363         latter semantics, it would have applied the PUT directly to the Content-Location URI.
    43684364      </p>
    4369       <p id="rfc.section.D.5.7.p.7">A Content-Location field received in a request message is transitory information that <em class="bcp14">SHOULD NOT</em> be saved with other representation metadata for use in later responses. The Content-Location's value might be saved for use
     4365      <p id="rfc.section.D.4.7.p.7">A Content-Location field received in a request message is transitory information that <em class="bcp14">SHOULD NOT</em> be saved with other representation metadata for use in later responses. The Content-Location's value might be saved for use
    43704366         in other contexts, such as within source links or other metadata.
    43714367      </p>
    4372       <p id="rfc.section.D.5.7.p.8">A cache cannot assume that a representation with a Content-Location different from the URI used to retrieve it can be used
     4368      <p id="rfc.section.D.4.7.p.8">A cache cannot assume that a representation with a Content-Location different from the URI used to retrieve it can be used
    43734369         to respond to later requests on that Content-Location URI.
    43744370      </p>
    4375       <p id="rfc.section.D.5.7.p.9">If the Content-Location value is a partial URI, the partial URI is interpreted relative to the effective request URI.</p>
     4371      <p id="rfc.section.D.4.7.p.9">If the Content-Location value is a partial URI, the partial URI is interpreted relative to the effective request URI.</p>
    43764372      <div id="rfc.iref.c.10"></div>
    43774373      <div id="rfc.iref.h.19"></div>
    4378       <h3 id="rfc.section.D.5.8"><a href="#rfc.section.D.5.8">D.5.8</a>&nbsp;<a id="header.content-type" href="#header.content-type">Content-Type</a></h3>
    4379       <p id="rfc.section.D.5.8.p.1">The "Content-Type" header field indicates the media type of the representation. In the case of responses to the HEAD method,
     4374      <h3 id="rfc.section.D.4.8"><a href="#rfc.section.D.4.8">D.4.8</a>&nbsp;<a id="header.content-type" href="#header.content-type">Content-Type</a></h3>
     4375      <p id="rfc.section.D.4.8.p.1">The "Content-Type" header field indicates the media type of the representation. In the case of responses to the HEAD method,
    43804376         the media type is that which would have been sent had the request been a GET.
    43814377      </p>
    43824378      <div id="rfc.figure.u.63"></div><pre class="inline"><span id="rfc.iref.g.58"></span>  <a href="#header.content-type" class="smpl">Content-Type</a> = <a href="#media.types" class="smpl">media-type</a>
    4383 </pre><p id="rfc.section.D.5.8.p.3">Media types are defined in <a href="#media.types" title="Media Types">Appendix&nbsp;D.1.3</a>. An example of the field is
     4379</pre><p id="rfc.section.D.4.8.p.3">Media types are defined in <a href="#media.types" title="Media Types">Section&nbsp;6.5</a>. An example of the field is
    43844380      </p>
    43854381      <div id="rfc.figure.u.64"></div><pre class="text">  Content-Type: text/html; charset=ISO-8859-4
    4386 </pre><p id="rfc.section.D.5.8.p.5">Further discussion of Content-Type is provided in <a href="#representation.data" title="Representation Data">Appendix&nbsp;D.3.2</a>.
    4387       </p>
    4388       <h2 id="rfc.section.D.6"><a href="#rfc.section.D.6">D.6</a>&nbsp;<a id="IANA.considerations3" href="#IANA.considerations3">IANA Considerations</a></h2>
    4389       <h3 id="rfc.section.D.6.1"><a href="#rfc.section.D.6.1">D.6.1</a>&nbsp;<a id="content.coding.registration" href="#content.coding.registration">Content Coding Registry</a></h3>
    4390       <p id="rfc.section.D.6.1.p.1">The registration procedure for HTTP Content Codings is now defined by <a href="#content.coding.registry" title="Content Coding Registry">Appendix&nbsp;D.1.2.1</a> of this document.
    4391       </p>
    4392       <p id="rfc.section.D.6.1.p.2">The HTTP Content Codings Registry located at &lt;<a href="http://www.iana.org/assignments/http-parameters">http://www.iana.org/assignments/http-parameters</a>&gt; shall be updated with the registration below:
     4382</pre><p id="rfc.section.D.4.8.p.5">Further discussion of Content-Type is provided in <a href="#representation.data" title="Representation Data">Appendix&nbsp;D.2.2</a>.
     4383      </p>
     4384      <h2 id="rfc.section.D.5"><a href="#rfc.section.D.5">D.5</a>&nbsp;<a id="IANA.considerations3" href="#IANA.considerations3">IANA Considerations</a></h2>
     4385      <h3 id="rfc.section.D.5.1"><a href="#rfc.section.D.5.1">D.5.1</a>&nbsp;<a id="content.coding.registration" href="#content.coding.registration">Content Coding Registry</a></h3>
     4386      <p id="rfc.section.D.5.1.p.1">The registration procedure for HTTP Content Codings is now defined by <a href="#content.coding.registry" title="Content Coding Registry">Section&nbsp;6.4.1</a> of this document.
     4387      </p>
     4388      <p id="rfc.section.D.5.1.p.2">The HTTP Content Codings Registry located at &lt;<a href="http://www.iana.org/assignments/http-parameters">http://www.iana.org/assignments/http-parameters</a>&gt; shall be updated with the registration below:
    43934389      </p>
    43944390      <div id="rfc.table.4">
     
    44254421                  <td class="left">identity</td>
    44264422                  <td class="left">reserved (synonym for "no encoding" in Accept-Encoding header field)</td>
    4427                   <td class="left"> <a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.5" title="Accept-Encoding">Appendix&nbsp;D.5.3</a>
     4423                  <td class="left"> <a href="#header.accept-encoding" id="rfc.xref.header.accept-encoding.5" title="Accept-Encoding">Appendix&nbsp;D.4.3</a>
    44284424                  </td>
    44294425               </tr>
     
    44314427         </table>
    44324428      </div>
    4433       <h2 id="rfc.section.D.7"><a href="#rfc.section.D.7">D.7</a>&nbsp;<a id="security.considerations3" href="#security.considerations3">Security Considerations</a></h2>
    4434       <p id="rfc.section.D.7.p.1">This section is meant to inform application developers, information providers, and users of the security limitations in HTTP/1.1
     4429      <h2 id="rfc.section.D.6"><a href="#rfc.section.D.6">D.6</a>&nbsp;<a id="security.considerations3" href="#security.considerations3">Security Considerations</a></h2>
     4430      <p id="rfc.section.D.6.p.1">This section is meant to inform application developers, information providers, and users of the security limitations in HTTP/1.1
    44354431         as described by this document. The discussion does not include definitive solutions to the problems revealed, though it does
    44364432         make some suggestions for reducing security risks.
    44374433      </p>
    4438       <h3 id="rfc.section.D.7.1"><a href="#rfc.section.D.7.1">D.7.1</a>&nbsp;<a id="privacy.issues.connected.to.accept.header.fields" href="#privacy.issues.connected.to.accept.header.fields">Privacy Issues Connected to Accept Header Fields</a></h3>
    4439       <p id="rfc.section.D.7.1.p.1">Accept header fields can reveal information about the user to all servers which are accessed. The Accept-Language header field
     4434      <h3 id="rfc.section.D.6.1"><a href="#rfc.section.D.6.1">D.6.1</a>&nbsp;<a id="privacy.issues.connected.to.accept.header.fields" href="#privacy.issues.connected.to.accept.header.fields">Privacy Issues Connected to Accept Header Fields</a></h3>
     4435      <p id="rfc.section.D.6.1.p.1">Accept header fields can reveal information about the user to all servers which are accessed. The Accept-Language header field
    44404436         in particular can reveal information the user would consider to be of a private nature, because the understanding of particular
    44414437         languages is often strongly correlated to the membership of a particular ethnic group. User agents which offer the option
     
    44434439         configuration process include a message which makes the user aware of the loss of privacy involved.
    44444440      </p>
    4445       <p id="rfc.section.D.7.1.p.2">An approach that limits the loss of privacy would be for a user agent to omit the sending of Accept-Language header fields
     4441      <p id="rfc.section.D.6.1.p.2">An approach that limits the loss of privacy would be for a user agent to omit the sending of Accept-Language header fields
    44464442         by default, and to ask the user whether or not to start sending Accept-Language header fields to a server if it detects, by
    44474443         looking for any Vary header fields generated by the server, that such sending could improve the quality of service.
    44484444      </p>
    4449       <p id="rfc.section.D.7.1.p.3">Elaborate user-customized accept header fields sent in every request, in particular if these include quality values, can be
     4445      <p id="rfc.section.D.6.1.p.3">Elaborate user-customized accept header fields sent in every request, in particular if these include quality values, can be
    44504446         used by servers as relatively reliable and long-lived user identifiers. Such user identifiers would allow content providers
    44514447         to do click-trail tracking, and would allow collaborating content providers to match cross-server click-trails or form submissions
     
    44554451         filter the accept header fields in relayed requests. General purpose user agents which provide a high degree of header configurability <em class="bcp14">SHOULD</em> warn users about the loss of privacy which can be involved.
    44564452      </p>
    4457       <h2 id="rfc.section.D.8"><a href="#rfc.section.D.8">D.8</a>&nbsp;<a id="differences.between.http.and.mime" href="#differences.between.http.and.mime">Differences between HTTP and MIME</a></h2>
    4458       <p id="rfc.section.D.8.p.1">HTTP/1.1 uses many of the constructs defined for Internet Mail (<a href="#RFC5322" id="rfc.xref.RFC5322.5"><cite title="Internet Message Format">[RFC5322]</cite></a>) and the Multipurpose Internet Mail Extensions (MIME <a href="#RFC2045" id="rfc.xref.RFC2045.1"><cite title="Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies">[RFC2045]</cite></a>) to allow a message body to be transmitted in an open variety of representations and with extensible mechanisms. However,
     4453      <h2 id="rfc.section.D.7"><a href="#rfc.section.D.7">D.7</a>&nbsp;<a id="differences.between.http.and.mime" href="#differences.between.http.and.mime">Differences between HTTP and MIME</a></h2>
     4454      <p id="rfc.section.D.7.p.1">HTTP/1.1 uses many of the constructs defined for Internet Mail (<a href="#RFC5322" id="rfc.xref.RFC5322.5"><cite title="Internet Message Format">[RFC5322]</cite></a>) and the Multipurpose Internet Mail Extensions (MIME <a href="#RFC2045" id="rfc.xref.RFC2045.1"><cite title="Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies">[RFC2045]</cite></a>) to allow a message body to be transmitted in an open variety of representations and with extensible mechanisms. However,
    44594455         RFC 2045 discusses mail, and HTTP has a few features that are different from those described in MIME. These differences were
    44604456         carefully chosen to optimize performance over binary connections, to allow greater freedom in the use of new media types,
    44614457         to make date comparisons easier, and to acknowledge the practice of some early HTTP servers and clients.
    44624458      </p>
    4463       <p id="rfc.section.D.8.p.2">This appendix describes specific areas where HTTP differs from MIME. Proxies and gateways to strict MIME environments <em class="bcp14">SHOULD</em> be aware of these differences and provide the appropriate conversions where necessary. Proxies and gateways from MIME environments
     4459      <p id="rfc.section.D.7.p.2">This appendix describes specific areas where HTTP differs from MIME. Proxies and gateways to strict MIME environments <em class="bcp14">SHOULD</em> be aware of these differences and provide the appropriate conversions where necessary. Proxies and gateways from MIME environments
    44644460         to HTTP also need to be aware of the differences because some conversions might be required.
    44654461      </p>
    44664462      <div id="rfc.iref.m.10"></div>
    44674463      <div id="rfc.iref.h.20"></div>
    4468       <h3 id="rfc.section.D.8.1"><a href="#rfc.section.D.8.1">D.8.1</a>&nbsp;<a id="mime-version" href="#mime-version">MIME-Version</a></h3>
    4469       <p id="rfc.section.D.8.1.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.
     4464      <h3 id="rfc.section.D.7.1"><a href="#rfc.section.D.7.1">D.7.1</a>&nbsp;<a id="mime-version" href="#mime-version">MIME-Version</a></h3>
     4465      <p id="rfc.section.D.7.1.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.
    44704466         Use of the MIME-Version header field indicates that the message is in full conformance with the MIME protocol (as defined
    44714467         in <a href="#RFC2045" id="rfc.xref.RFC2045.2"><cite title="Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies">[RFC2045]</cite></a>). Proxies/gateways are responsible for ensuring full conformance (where possible) when exporting HTTP messages to strict
     
    44734469      </p>
    44744470      <div id="rfc.figure.u.65"></div><pre class="inline"><span id="rfc.iref.g.59"></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>
    4475 </pre><p id="rfc.section.D.8.1.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
     4471</pre><p id="rfc.section.D.7.1.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
    44764472         document and not the MIME specification.
    44774473      </p>
    4478       <h3 id="rfc.section.D.8.2"><a href="#rfc.section.D.8.2">D.8.2</a>&nbsp;<a id="conversion.to.canonical.form" href="#conversion.to.canonical.form">Conversion to Canonical Form</a></h3>
    4479       <p id="rfc.section.D.8.2.p.1">MIME requires that an Internet mail body-part be converted to canonical form prior to being transferred, as described in <a href="http://tools.ietf.org/html/rfc2049#section-4">Section 4</a> of <a href="#RFC2049" id="rfc.xref.RFC2049.1"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Five: Conformance Criteria and Examples">[RFC2049]</cite></a>. <a href="#canonicalization.and.text.defaults" title="Canonicalization and Text Defaults">Appendix&nbsp;D.1.3.1</a> of this document describes the forms allowed for subtypes of the "text" media type when transmitted over HTTP. <a href="#RFC2046" id="rfc.xref.RFC2046.4"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a> requires that content with a type of "text" represent line breaks as CRLF and forbids the use of CR or LF outside of line
     4474      <h3 id="rfc.section.D.7.2"><a href="#rfc.section.D.7.2">D.7.2</a>&nbsp;<a id="conversion.to.canonical.form" href="#conversion.to.canonical.form">Conversion to Canonical Form</a></h3>
     4475      <p id="rfc.section.D.7.2.p.1">MIME requires that an Internet mail body-part be converted to canonical form prior to being transferred, as described in <a href="http://tools.ietf.org/html/rfc2049#section-4">Section 4</a> of <a href="#RFC2049" id="rfc.xref.RFC2049.1"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Five: Conformance Criteria and Examples">[RFC2049]</cite></a>. <a href="#canonicalization.and.text.defaults" title="Canonicalization and Text Defaults">Section&nbsp;6.5.1</a> of this document describes the forms allowed for subtypes of the "text" media type when transmitted over HTTP. <a href="#RFC2046" id="rfc.xref.RFC2046.4"><cite title="Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types">[RFC2046]</cite></a> requires that content with a type of "text" represent line breaks as CRLF and forbids the use of CR or LF outside of line
    44804476         break sequences. HTTP allows CRLF, bare CR, and bare LF to indicate a line break within text content when a message is transmitted
    44814477         over HTTP.
    44824478      </p>
    4483       <p id="rfc.section.D.8.2.p.2">Where it is possible, a proxy or gateway from HTTP to a strict MIME environment <em class="bcp14">SHOULD</em> translate all line breaks within the text media types described in <a href="#canonicalization.and.text.defaults" title="Canonicalization and Text Defaults">Appendix&nbsp;D.1.3.1</a> of this document to the RFC 2049 canonical form of CRLF. Note, however, that this might be complicated by the presence of
     4479      <p id="rfc.section.D.7.2.p.2">Where it is possible, a proxy or gateway from HTTP to a strict MIME environment <em class="bcp14">SHOULD</em> translate all line breaks within the text media types described in <a href="#canonicalization.and.text.defaults" title="Canonicalization and Text Defaults">Section&nbsp;6.5.1</a> of this document to the RFC 2049 canonical form of CRLF. Note, however, that this might be complicated by the presence of
    44844480         a Content-Encoding and by the fact that HTTP allows the use of some character encodings which do not use octets 13 and 10
    44854481         to represent CR and LF, respectively, as is the case for some multi-byte character encodings.
    44864482      </p>
    4487       <p id="rfc.section.D.8.2.p.3">Conversion will break any cryptographic checksums applied to the original content unless the original content is already in
     4483      <p id="rfc.section.D.7.2.p.3">Conversion will break any cryptographic checksums applied to the original content unless the original content is already in
    44884484         canonical form. Therefore, the canonical form is recommended for any content that uses such checksums in HTTP.
    44894485      </p>
    4490       <h3 id="rfc.section.D.8.3"><a href="#rfc.section.D.8.3">D.8.3</a>&nbsp;<a id="conversion.of.date.formats" href="#conversion.of.date.formats">Conversion of Date Formats</a></h3>
    4491       <p id="rfc.section.D.8.3.p.1">HTTP/1.1 uses a restricted set of date formats (<a href="#http.date" title="Date/Time Formats">Section&nbsp;6.1</a>) to simplify the process of date comparison. Proxies and gateways from other protocols <em class="bcp14">SHOULD</em> ensure that any Date header field present in a message conforms to one of the HTTP/1.1 formats and rewrite the date if necessary.
    4492       </p>
    4493       <h3 id="rfc.section.D.8.4"><a href="#rfc.section.D.8.4">D.8.4</a>&nbsp;<a id="introduction.of.content-encoding" href="#introduction.of.content-encoding">Introduction of Content-Encoding</a></h3>
    4494       <p id="rfc.section.D.8.4.p.1">MIME does not include any concept equivalent to HTTP/1.1's Content-Encoding header field. Since this acts as a modifier on
     4486      <h3 id="rfc.section.D.7.3"><a href="#rfc.section.D.7.3">D.7.3</a>&nbsp;<a id="conversion.of.date.formats" href="#conversion.of.date.formats">Conversion of Date Formats</a></h3>
     4487      <p id="rfc.section.D.7.3.p.1">HTTP/1.1 uses a restricted set of date formats (<a href="#http.date" title="Date/Time Formats">Section&nbsp;6.1</a>) to simplify the process of date comparison. Proxies and gateways from other protocols <em class="bcp14">SHOULD</em> ensure that any Date header field present in a message conforms to one of the HTTP/1.1 formats and rewrite the date if necessary.
     4488      </p>
     4489      <h3 id="rfc.section.D.7.4"><a href="#rfc.section.D.7.4">D.7.4</a>&nbsp;<a id="introduction.of.content-encoding" href="#introduction.of.content-encoding">Introduction of Content-Encoding</a></h3>
     4490      <p id="rfc.section.D.7.4.p.1">MIME does not include any concept equivalent to HTTP/1.1's Content-Encoding header field. Since this acts as a modifier on
    44954491         the media type, proxies and gateways from HTTP to MIME-compliant protocols <em class="bcp14">MUST</em> either change the value of the Content-Type header field or decode the representation before forwarding the message. (Some
    44964492         experimental applications of Content-Type for Internet mail have used a media-type parameter of ";conversions=&lt;content-coding&gt;"
     
    44994495      <div id="rfc.iref.c.11"></div>
    45004496      <div id="rfc.iref.h.21"></div>
    4501       <h3 id="rfc.section.D.8.5"><a href="#rfc.section.D.8.5">D.8.5</a>&nbsp;<a id="no.content-transfer-encoding" href="#no.content-transfer-encoding">No Content-Transfer-Encoding</a></h3>
    4502       <p id="rfc.section.D.8.5.p.1">HTTP does not use the Content-Transfer-Encoding field of MIME. Proxies and gateways from MIME-compliant protocols to HTTP <em class="bcp14">MUST</em> remove any Content-Transfer-Encoding prior to delivering the response message to an HTTP client.
    4503       </p>
    4504       <p id="rfc.section.D.8.5.p.2">Proxies and gateways from HTTP to MIME-compliant protocols are responsible for ensuring that the message is in the correct
     4497      <h3 id="rfc.section.D.7.5"><a href="#rfc.section.D.7.5">D.7.5</a>&nbsp;<a id="no.content-transfer-encoding" href="#no.content-transfer-encoding">No Content-Transfer-Encoding</a></h3>
     4498      <p id="rfc.section.D.7.5.p.1">HTTP does not use the Content-Transfer-Encoding field of MIME. Proxies and gateways from MIME-compliant protocols to HTTP <em class="bcp14">MUST</em> remove any Content-Transfer-Encoding prior to delivering the response message to an HTTP client.
     4499      </p>
     4500      <p id="rfc.section.D.7.5.p.2">Proxies and gateways from HTTP to MIME-compliant protocols are responsible for ensuring that the message is in the correct
    45054501         format and encoding for safe transport on that protocol, where "safe transport" is defined by the limitations of the protocol
    45064502         being used. Such a proxy or gateway <em class="bcp14">SHOULD</em> label the data with an appropriate Content-Transfer-Encoding if doing so will improve the likelihood of safe transport over
    45074503         the destination protocol.
    45084504      </p>
    4509       <h3 id="rfc.section.D.8.6"><a href="#rfc.section.D.8.6">D.8.6</a>&nbsp;<a id="introduction.of.transfer-encoding" href="#introduction.of.transfer-encoding">Introduction of Transfer-Encoding</a></h3>
    4510       <p id="rfc.section.D.8.6.p.1">HTTP/1.1 introduces the Transfer-Encoding header field (<a href="p1-messaging.html#header.transfer-encoding" title="Transfer-Encoding">Section 3.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.59"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). Proxies/gateways <em class="bcp14">MUST</em> remove any transfer-coding prior to forwarding a message via a MIME-compliant protocol.
    4511       </p>
    4512       <h3 id="rfc.section.D.8.7"><a href="#rfc.section.D.8.7">D.8.7</a>&nbsp;<a id="mhtml.line.length" href="#mhtml.line.length">MHTML and Line Length Limitations</a></h3>
    4513       <p id="rfc.section.D.8.7.p.1">HTTP implementations which share code with MHTML <a href="#RFC2557" id="rfc.xref.RFC2557.2"><cite title="MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)">[RFC2557]</cite></a> implementations need to be aware of MIME line length limitations. Since HTTP does not have this limitation, HTTP does not
     4505      <h3 id="rfc.section.D.7.6"><a href="#rfc.section.D.7.6">D.7.6</a>&nbsp;<a id="introduction.of.transfer-encoding" href="#introduction.of.transfer-encoding">Introduction of Transfer-Encoding</a></h3>
     4506      <p id="rfc.section.D.7.6.p.1">HTTP/1.1 introduces the Transfer-Encoding header field (<a href="p1-messaging.html#header.transfer-encoding" title="Transfer-Encoding">Section 3.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.59"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). Proxies/gateways <em class="bcp14">MUST</em> remove any transfer-coding prior to forwarding a message via a MIME-compliant protocol.
     4507      </p>
     4508      <h3 id="rfc.section.D.7.7"><a href="#rfc.section.D.7.7">D.7.7</a>&nbsp;<a id="mhtml.line.length" href="#mhtml.line.length">MHTML and Line Length Limitations</a></h3>
     4509      <p id="rfc.section.D.7.7.p.1">HTTP implementations which share code with MHTML <a href="#RFC2557" id="rfc.xref.RFC2557.2"><cite title="MIME Encapsulation of Aggregate Documents, such as HTML (MHTML)">[RFC2557]</cite></a> implementations need to be aware of MIME line length limitations. Since HTTP does not have this limitation, HTTP does not
    45144510         fold long lines. MHTML messages being transported by HTTP follow all conventions of MHTML, including line length limitations
    4515          and folding, canonicalization, etc., since HTTP transports all message-bodies as payload (see <a href="#multipart.types" title="Multipart Types">Appendix&nbsp;D.1.3.2</a>) and does not interpret the content or any MIME header lines that might be contained therein.
    4516       </p>
    4517       <h2 id="rfc.section.D.9"><a href="#rfc.section.D.9">D.9</a>&nbsp;<a id="additional.features" href="#additional.features">Additional Features</a></h2>
    4518       <p id="rfc.section.D.9.p.1"> <a href="#RFC1945" id="rfc.xref.RFC1945.2"><cite title="Hypertext Transfer Protocol -- HTTP/1.0">[RFC1945]</cite></a> and <a href="#RFC2068" id="rfc.xref.RFC2068.3"><cite title="Hypertext Transfer Protocol -- HTTP/1.1">[RFC2068]</cite></a> document protocol elements used by some existing HTTP implementations, but not consistently and correctly across most HTTP/1.1
     4511         and folding, canonicalization, etc., since HTTP transports all message-bodies as payload (see <a href="#multipart.types" title="Multipart Types">Section&nbsp;6.5.2</a>) and does not interpret the content or any MIME header lines that might be contained therein.
     4512      </p>
     4513      <h2 id="rfc.section.D.8"><a href="#rfc.section.D.8">D.8</a>&nbsp;<a id="additional.features" href="#additional.features">Additional Features</a></h2>
     4514      <p id="rfc.section.D.8.p.1"> <a href="#RFC1945" id="rfc.xref.RFC1945.2"><cite title="Hypertext Transfer Protocol -- HTTP/1.0">[RFC1945]</cite></a> and <a href="#RFC2068" id="rfc.xref.RFC2068.3"><cite title="Hypertext Transfer Protocol -- HTTP/1.1">[RFC2068]</cite></a> document protocol elements used by some existing HTTP implementations, but not consistently and correctly across most HTTP/1.1
    45194515         applications. Implementors are advised to be aware of these features, but cannot rely upon their presence in, or interoperability
    45204516         with, other HTTP/1.1 applications. Some of these describe proposed experimental features, and some describe features that
    45214517         experimental deployment found lacking that are now addressed in the base HTTP/1.1 specification.
    45224518      </p>
    4523       <p id="rfc.section.D.9.p.2">A number of other header fields, such as Content-Disposition and Title, from SMTP and MIME are also often implemented (see <a href="#RFC6266" id="rfc.xref.RFC6266.1"><cite title="Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)">[RFC6266]</cite></a> and <a href="#RFC2076" id="rfc.xref.RFC2076.1"><cite title="Common Internet Message Headers">[RFC2076]</cite></a>).
    4524       </p>
    4525       <h2 id="rfc.section.D.10"><a href="#rfc.section.D.10">D.10</a>&nbsp;<a id="changes.from.rfc.2616-3" href="#changes.from.rfc.2616-3">Changes from RFC 2616</a></h2>
    4526       <p id="rfc.section.D.10.p.1">Clarify contexts that charset is used in. (<a href="#character.sets" title="Character Encodings (charset)">Appendix&nbsp;D.1.1</a>)
    4527       </p>
    4528       <p id="rfc.section.D.10.p.2">Registration of Content Codings now requires IETF Review (<a href="#content.coding.registry" title="Content Coding Registry">Appendix&nbsp;D.1.2.1</a>)
    4529       </p>
    4530       <p id="rfc.section.D.10.p.3">Remove the default character encoding for text media types; the default now is whatever the media type definition says. (<a href="#canonicalization.and.text.defaults" title="Canonicalization and Text Defaults">Appendix&nbsp;D.1.3.1</a>)
    4531       </p>
    4532       <p id="rfc.section.D.10.p.4">Change ABNF productions for header fields to only define the field value. (<a href="#header.field.definitions" title="Header Field Definitions">Section&nbsp;7</a>)
    4533       </p>
    4534       <p id="rfc.section.D.10.p.5">Remove definition of Content-MD5 header field because it was inconsistently implemented with respect to partial responses,
     4519      <p id="rfc.section.D.8.p.2">A number of other header fields, such as Content-Disposition and Title, from SMTP and MIME are also often implemented (see <a href="#RFC6266" id="rfc.xref.RFC6266.1"><cite title="Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)">[RFC6266]</cite></a> and <a href="#RFC2076" id="rfc.xref.RFC2076.1"><cite title="Common Internet Message Headers">[RFC2076]</cite></a>).
     4520      </p>
     4521      <h2 id="rfc.section.D.9"><a href="#rfc.section.D.9">D.9</a>&nbsp;<a id="changes.from.rfc.2616-3" href="#changes.from.rfc.2616-3">Changes from RFC 2616</a></h2>
     4522      <p id="rfc.section.D.9.p.1">Clarify contexts that charset is used in. (<a href="#character.sets" title="Character Encodings (charset)">Section&nbsp;6.3</a>)
     4523      </p>
     4524      <p id="rfc.section.D.9.p.2">Registration of Content Codings now requires IETF Review (<a href="#content.coding.registry" title="Content Coding Registry">Section&nbsp;6.4.1</a>)
     4525      </p>
     4526      <p id="rfc.section.D.9.p.3">Remove the default character encoding for text media types; the default now is whatever the media type definition says. (<a href="#canonicalization.and.text.defaults" title="Canonicalization and Text Defaults">Section&nbsp;6.5.1</a>)
     4527      </p>
     4528      <p id="rfc.section.D.9.p.4">Change ABNF productions for header fields to only define the field value. (<a href="#header.field.definitions" title="Header Field Definitions">Section&nbsp;7</a>)
     4529      </p>
     4530      <p id="rfc.section.D.9.p.5">Remove definition of Content-MD5 header field because it was inconsistently implemented with respect to partial responses,
    45354531         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.field.definitions" title="Header Field Definitions">Section&nbsp;7</a>)
    45364532      </p>
    4537       <p id="rfc.section.D.10.p.6">Remove ISO-8859-1 special-casing in Accept-Charset. (<a href="#header.accept-charset" id="rfc.xref.header.accept-charset.4" title="Accept-Charset">Appendix&nbsp;D.5.2</a>)
    4538       </p>
    4539       <p id="rfc.section.D.10.p.7">Remove base URI setting semantics for Content-Location due to poor implementation support, which was caused by too many broken
     4533      <p id="rfc.section.D.9.p.6">Remove ISO-8859-1 special-casing in Accept-Charset. (<a href="#header.accept-charset" id="rfc.xref.header.accept-charset.4" title="Accept-Charset">Appendix&nbsp;D.4.2</a>)
     4534      </p>
     4535      <p id="rfc.section.D.9.p.7">Remove base URI setting semantics for Content-Location due to poor implementation support, which was caused by too many broken
    45404536         servers emitting bogus Content-Location header fields, and also the potentially undesirable effect of potentially breaking
    4541          relative links in content-negotiated resources. (<a href="#header.content-location" id="rfc.xref.header.content-location.5" title="Content-Location">Appendix&nbsp;D.5.7</a>)
    4542       </p>
    4543       <p id="rfc.section.D.10.p.8">Remove reference to non-existant identity transfer-coding value tokens. (<a href="#no.content-transfer-encoding" id="rfc.xref.no.content-transfer-encoding.1" title="No Content-Transfer-Encoding">Appendix&nbsp;D.8.5</a>)
    4544       </p>
    4545       <p id="rfc.section.D.10.p.9">Remove discussion of Content-Disposition header field, it is now defined by <a href="#RFC6266" id="rfc.xref.RFC6266.2"><cite title="Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)">[RFC6266]</cite></a>. (<a href="#additional.features" title="Additional Features">Appendix&nbsp;D.9</a>)
    4546       </p>
    4547       <h2 id="rfc.section.D.11"><a href="#rfc.section.D.11">D.11</a>&nbsp;<a id="change.log3" href="#change.log3">Change Log (to be removed by RFC Editor before publication)</a></h2>
    4548       <h3 id="rfc.section.D.11.1"><a href="#rfc.section.D.11.1">D.11.1</a>&nbsp;Since RFC 2616
     4537         relative links in content-negotiated resources. (<a href="#header.content-location" id="rfc.xref.header.content-location.5" title="Content-Location">Appendix&nbsp;D.4.7</a>)
     4538      </p>
     4539      <p id="rfc.section.D.9.p.8">Remove reference to non-existant identity transfer-coding value tokens. (<a href="#no.content-transfer-encoding" id="rfc.xref.no.content-transfer-encoding.1" title="No Content-Transfer-Encoding">Appendix&nbsp;D.7.5</a>)
     4540      </p>
     4541      <p id="rfc.section.D.9.p.9">Remove discussion of Content-Disposition header field, it is now defined by <a href="#RFC6266" id="rfc.xref.RFC6266.2"><cite title="Use of the Content-Disposition Header Field in the Hypertext Transfer Protocol (HTTP)">[RFC6266]</cite></a>. (<a href="#additional.features" title="Additional Features">Appendix&nbsp;D.8</a>)
     4542      </p>
     4543      <h2 id="rfc.section.D.10"><a href="#rfc.section.D.10">D.10</a>&nbsp;<a id="change.log3" href="#change.log3">Change Log (to be removed by RFC Editor before publication)</a></h2>
     4544      <h3 id="rfc.section.D.10.1"><a href="#rfc.section.D.10.1">D.10.1</a>&nbsp;Since RFC 2616
    45494545      </h3>
    4550       <p id="rfc.section.D.11.1.p.1">Extracted relevant partitions from <a href="#RFC2616" id="rfc.xref.RFC2616.5"><cite title="Hypertext Transfer Protocol -- HTTP/1.1">[RFC2616]</cite></a>.
    4551       </p>
    4552       <h3 id="rfc.section.D.11.2"><a href="#rfc.section.D.11.2">D.11.2</a>&nbsp;Since draft-ietf-httpbis-p3-payload-00
     4546      <p id="rfc.section.D.10.1.p.1">Extracted relevant partitions from <a href="#RFC2616" id="rfc.xref.RFC2616.5"><cite title="Hypertext Transfer Protocol -- HTTP/1.1">[RFC2616]</cite></a>.
     4547      </p>
     4548      <h3 id="rfc.section.D.10.2"><a href="#rfc.section.D.10.2">D.10.2</a>&nbsp;Since draft-ietf-httpbis-p3-payload-00
    45534549      </h3>
    4554       <p id="rfc.section.D.11.2.p.1">Closed issues: </p>
     4550      <p id="rfc.section.D.10.2.p.1">Closed issues: </p>
    45554551      <ul>
    45564552         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/8">http://tools.ietf.org/wg/httpbis/trac/ticket/8</a>&gt;: "Media Type Registrations" (&lt;<a href="http://purl.org/NET/http-errata#media-reg">http://purl.org/NET/http-errata#media-reg</a>&gt;)
     
    45774573         </li>
    45784574      </ul>
    4579       <h3 id="rfc.section.D.11.3"><a href="#rfc.section.D.11.3">D.11.3</a>&nbsp;Since draft-ietf-httpbis-p3-payload-01
     4575      <h3 id="rfc.section.D.10.3"><a href="#rfc.section.D.10.3">D.10.3</a>&nbsp;Since draft-ietf-httpbis-p3-payload-01
    45804576      </h3>
    4581       <p id="rfc.section.D.11.3.p.1">Ongoing work on ABNF conversion (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
     4577      <p id="rfc.section.D.10.3.p.1">Ongoing work on ABNF conversion (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
    45824578      </p>
    45834579      <ul>
    45844580         <li>Add explicit references to BNF syntax and rules imported from other parts of the specification.</li>
    45854581      </ul>
    4586       <h3 id="rfc.section.D.11.4"><a href="#rfc.section.D.11.4">D.11.4</a>&nbsp;<a id="changes.3.since.02" href="#changes.3.since.02">Since draft-ietf-httpbis-p3-payload-02</a></h3>
    4587       <p id="rfc.section.D.11.4.p.1">Closed issues: </p>
     4582      <h3 id="rfc.section.D.10.4"><a href="#rfc.section.D.10.4">D.10.4</a>&nbsp;<a id="changes.3.since.02" href="#changes.3.since.02">Since draft-ietf-httpbis-p3-payload-02</a></h3>
     4583      <p id="rfc.section.D.10.4.p.1">Closed issues: </p>
    45884584      <ul>
    45894585         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/67">http://tools.ietf.org/wg/httpbis/trac/ticket/67</a>&gt;: "Quoting Charsets"
     
    45944590         </li>
    45954591      </ul>
    4596       <p id="rfc.section.D.11.4.p.2">Ongoing work on IANA Message Header Field Registration (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/40">http://tools.ietf.org/wg/httpbis/trac/ticket/40</a>&gt;):
     4592      <p id="rfc.section.D.10.4.p.2">Ongoing work on IANA Message Header Field Registration (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/40">http://tools.ietf.org/wg/httpbis/trac/ticket/40</a>&gt;):
    45974593      </p>
    45984594      <ul>
    45994595         <li>Reference RFC 3984, and update header field registrations for headers defined in this document.</li>
    46004596      </ul>
    4601       <h3 id="rfc.section.D.11.5"><a href="#rfc.section.D.11.5">D.11.5</a>&nbsp;<a id="changes.3.since.03" href="#changes.3.since.03">Since draft-ietf-httpbis-p3-payload-03</a></h3>
    4602       <p id="rfc.section.D.11.5.p.1">Closed issues: </p>
     4597      <h3 id="rfc.section.D.10.5"><a href="#rfc.section.D.10.5">D.10.5</a>&nbsp;<a id="changes.3.since.03" href="#changes.3.since.03">Since draft-ietf-httpbis-p3-payload-03</a></h3>
     4598      <p id="rfc.section.D.10.5.p.1">Closed issues: </p>
    46034599      <ul>
    46044600         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/67">http://tools.ietf.org/wg/httpbis/trac/ticket/67</a>&gt;: "Quoting Charsets"
     
    46094605         </li>
    46104606      </ul>
    4611       <p id="rfc.section.D.11.5.p.2">Other changes: </p>
     4607      <p id="rfc.section.D.10.5.p.2">Other changes: </p>
    46124608      <ul>
    46134609         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/68">http://tools.ietf.org/wg/httpbis/trac/ticket/68</a>&gt;: "Encoding References Normative" — rephrase the annotation and reference BCP97.
    46144610         </li>
    46154611      </ul>
    4616       <h3 id="rfc.section.D.11.6"><a href="#rfc.section.D.11.6">D.11.6</a>&nbsp;<a id="changes.3.since.04" href="#changes.3.since.04">Since draft-ietf-httpbis-p3-payload-04</a></h3>
    4617       <p id="rfc.section.D.11.6.p.1">Closed issues: </p>
     4612      <h3 id="rfc.section.D.10.6"><a href="#rfc.section.D.10.6">D.10.6</a>&nbsp;<a id="changes.3.since.04" href="#changes.3.since.04">Since draft-ietf-httpbis-p3-payload-04</a></h3>
     4613      <p id="rfc.section.D.10.6.p.1">Closed issues: </p>
    46184614      <ul>
    46194615         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/132">http://tools.ietf.org/wg/httpbis/trac/ticket/132</a>&gt;: "RFC 2822 is updated by RFC 5322"
    46204616         </li>
    46214617      </ul>
    4622       <p id="rfc.section.D.11.6.p.2">Ongoing work on ABNF conversion (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
     4618      <p id="rfc.section.D.10.6.p.2">Ongoing work on ABNF conversion (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
    46234619      </p>
    46244620      <ul>
     
    46274623         <li>Rewrite ABNFs to spell out whitespace rules, factor out header field value format definitions.</li>
    46284624      </ul>
    4629       <h3 id="rfc.section.D.11.7"><a href="#rfc.section.D.11.7">D.11.7</a>&nbsp;<a id="changes.3.since.05" href="#changes.3.since.05">Since draft-ietf-httpbis-p3-payload-05</a></h3>
    4630       <p id="rfc.section.D.11.7.p.1">Closed issues: </p>
     4625      <h3 id="rfc.section.D.10.7"><a href="#rfc.section.D.10.7">D.10.7</a>&nbsp;<a id="changes.3.since.05" href="#changes.3.since.05">Since draft-ietf-httpbis-p3-payload-05</a></h3>
     4626      <p id="rfc.section.D.10.7.p.1">Closed issues: </p>
    46314627      <ul>
    46324628         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/118">http://tools.ietf.org/wg/httpbis/trac/ticket/118</a>&gt;: "Join "Differences Between HTTP Entities and RFC 2045 Entities"?"
    46334629         </li>
    46344630      </ul>
    4635       <p id="rfc.section.D.11.7.p.2">Final work on ABNF conversion (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
     4631      <p id="rfc.section.D.10.7.p.2">Final work on ABNF conversion (&lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/36">http://tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
    46364632      </p>
    46374633      <ul>
    46384634         <li>Add appendix containing collected and expanded ABNF, reorganize ABNF introduction.</li>
    46394635      </ul>
    4640       <p id="rfc.section.D.11.7.p.3">Other changes: </p>
     4636      <p id="rfc.section.D.10.7.p.3">Other changes: </p>
    46414637      <ul>
    46424638         <li>Move definition of quality values into Part 1.</li>
    46434639      </ul>
    4644       <h3 id="rfc.section.D.11.8"><a href="#rfc.section.D.11.8">D.11.8</a>&nbsp;<a id="changes.3.since.06" href="#changes.3.since.06">Since draft-ietf-httpbis-p3-payload-06</a></h3>
    4645       <p id="rfc.section.D.11.8.p.1">Closed issues: </p>
     4640      <h3 id="rfc.section.D.10.8"><a href="#rfc.section.D.10.8">D.10.8</a>&nbsp;<a id="changes.3.since.06" href="#changes.3.since.06">Since draft-ietf-httpbis-p3-payload-06</a></h3>
     4641      <p id="rfc.section.D.10.8.p.1">Closed issues: </p>
    46464642      <ul>
    46474643         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/80">http://tools.ietf.org/wg/httpbis/trac/ticket/80</a>&gt;: "Content-Location isn't special"
     
    46504646         </li>
    46514647      </ul>
    4652       <h3 id="rfc.section.D.11.9"><a href="#rfc.section.D.11.9">D.11.9</a>&nbsp;<a id="changes.3.since.07" href="#changes.3.since.07">Since draft-ietf-httpbis-p3-payload-07</a></h3>
    4653       <p id="rfc.section.D.11.9.p.1">Closed issues: </p>
     4648      <h3 id="rfc.section.D.10.9"><a href="#rfc.section.D.10.9">D.10.9</a>&nbsp;<a id="changes.3.since.07" href="#changes.3.since.07">Since draft-ietf-httpbis-p3-payload-07</a></h3>
     4649      <p id="rfc.section.D.10.9.p.1">Closed issues: </p>
    46544650      <ul>
    46554651         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/13">http://tools.ietf.org/wg/httpbis/trac/ticket/13</a>&gt;: "Updated reference for language tags"
     
    46664662         </li>
    46674663      </ul>
    4668       <p id="rfc.section.D.11.9.p.2">Partly resolved issues: </p>
     4664      <p id="rfc.section.D.10.9.p.2">Partly resolved issues: </p>
    46694665      <ul>
    46704666         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/148">http://tools.ietf.org/wg/httpbis/trac/ticket/148</a>&gt;: "update IANA requirements wrt Transfer-Coding values" (add the IANA Considerations subsection)
     
    46734669         </li>
    46744670      </ul>
    4675       <h3 id="rfc.section.D.11.10"><a href="#rfc.section.D.11.10">D.11.10</a>&nbsp;<a id="changes.3.since.08" href="#changes.3.since.08">Since draft-ietf-httpbis-p3-payload-08</a></h3>
    4676       <p id="rfc.section.D.11.10.p.1">Closed issues: </p>
     4671      <h3 id="rfc.section.D.10.10"><a href="#rfc.section.D.10.10">D.10.10</a>&nbsp;<a id="changes.3.since.08" href="#changes.3.since.08">Since draft-ietf-httpbis-p3-payload-08</a></h3>
     4672      <p id="rfc.section.D.10.10.p.1">Closed issues: </p>
    46774673      <ul>
    46784674         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/81">http://tools.ietf.org/wg/httpbis/trac/ticket/81</a>&gt;: "Content Negotiation for media types"
     
    46814677         </li>
    46824678      </ul>
    4683       <h3 id="rfc.section.D.11.11"><a href="#rfc.section.D.11.11">D.11.11</a>&nbsp;<a id="changes.3.since.09" href="#changes.3.since.09">Since draft-ietf-httpbis-p3-payload-09</a></h3>
    4684       <p id="rfc.section.D.11.11.p.1">Closed issues: </p>
     4679      <h3 id="rfc.section.D.10.11"><a href="#rfc.section.D.10.11">D.10.11</a>&nbsp;<a id="changes.3.since.09" href="#changes.3.since.09">Since draft-ietf-httpbis-p3-payload-09</a></h3>
     4680      <p id="rfc.section.D.10.11.p.1">Closed issues: </p>
    46854681      <ul>
    46864682         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/122">http://tools.ietf.org/wg/httpbis/trac/ticket/122</a>&gt;: "MIME-Version not listed in P1, general header fields"
     
    46934689         </li>
    46944690      </ul>
    4695       <p id="rfc.section.D.11.11.p.2">Partly resolved issues: </p>
     4691      <p id="rfc.section.D.10.11.p.2">Partly resolved issues: </p>
    46964692      <ul>
    46974693         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/196">http://tools.ietf.org/wg/httpbis/trac/ticket/196</a>&gt;: "Term for the requested resource's URI"
    46984694         </li>
    46994695      </ul>
    4700       <h3 id="rfc.section.D.11.12"><a href="#rfc.section.D.11.12">D.11.12</a>&nbsp;<a id="changes.3.since.10" href="#changes.3.since.10">Since draft-ietf-httpbis-p3-payload-10</a></h3>
    4701       <p id="rfc.section.D.11.12.p.1">Closed issues: </p>
     4696      <h3 id="rfc.section.D.10.12"><a href="#rfc.section.D.10.12">D.10.12</a>&nbsp;<a id="changes.3.since.10" href="#changes.3.since.10">Since draft-ietf-httpbis-p3-payload-10</a></h3>
     4697      <p id="rfc.section.D.10.12.p.1">Closed issues: </p>
    47024698      <ul>
    47034699         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/69">http://tools.ietf.org/wg/httpbis/trac/ticket/69</a>&gt;: "Clarify 'Requested Variant'"
     
    47184714         </li>
    47194715      </ul>
    4720       <p id="rfc.section.D.11.12.p.2">Partly resolved issues: </p>
     4716      <p id="rfc.section.D.10.12.p.2">Partly resolved issues: </p>
    47214717      <ul>
    47224718         <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"
    47234719         </li>
    47244720      </ul>
    4725       <h3 id="rfc.section.D.11.13"><a href="#rfc.section.D.11.13">D.11.13</a>&nbsp;<a id="changes.3.since.11" href="#changes.3.since.11">Since draft-ietf-httpbis-p3-payload-11</a></h3>
    4726       <p id="rfc.section.D.11.13.p.1">Closed issues: </p>
     4721      <h3 id="rfc.section.D.10.13"><a href="#rfc.section.D.10.13">D.10.13</a>&nbsp;<a id="changes.3.since.11" href="#changes.3.since.11">Since draft-ietf-httpbis-p3-payload-11</a></h3>
     4722      <p id="rfc.section.D.10.13.p.1">Closed issues: </p>
    47274723      <ul>
    47284724         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/123">http://tools.ietf.org/wg/httpbis/trac/ticket/123</a>&gt;: "Factor out Content-Disposition"
    47294725         </li>
    47304726      </ul>
    4731       <h3 id="rfc.section.D.11.14"><a href="#rfc.section.D.11.14">D.11.14</a>&nbsp;<a id="changes.3.since.12" href="#changes.3.since.12">Since draft-ietf-httpbis-p3-payload-12</a></h3>
    4732       <p id="rfc.section.D.11.14.p.1">Closed issues: </p>
     4727      <h3 id="rfc.section.D.10.14"><a href="#rfc.section.D.10.14">D.10.14</a>&nbsp;<a id="changes.3.since.12" href="#changes.3.since.12">Since draft-ietf-httpbis-p3-payload-12</a></h3>
     4728      <p id="rfc.section.D.10.14.p.1">Closed issues: </p>
    47334729      <ul>
    47344730         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/224">http://tools.ietf.org/wg/httpbis/trac/ticket/224</a>&gt;: "Header Classification"
     
    47394735         </li>
    47404736      </ul>
    4741       <h3 id="rfc.section.D.11.15"><a href="#rfc.section.D.11.15">D.11.15</a>&nbsp;<a id="changes.3.since.13" href="#changes.3.since.13">Since draft-ietf-httpbis-p3-payload-13</a></h3>
    4742       <p id="rfc.section.D.11.15.p.1">Closed issues: </p>
     4737      <h3 id="rfc.section.D.10.15"><a href="#rfc.section.D.10.15">D.10.15</a>&nbsp;<a id="changes.3.since.13" href="#changes.3.since.13">Since draft-ietf-httpbis-p3-payload-13</a></h3>
     4738      <p id="rfc.section.D.10.15.p.1">Closed issues: </p>
    47434739      <ul>
    47444740         <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"
     
    47514747         </li>
    47524748      </ul>
    4753       <h3 id="rfc.section.D.11.16"><a href="#rfc.section.D.11.16">D.11.16</a>&nbsp;<a id="changes.3.since.14" href="#changes.3.since.14">Since draft-ietf-httpbis-p3-payload-14</a></h3>
    4754       <p id="rfc.section.D.11.16.p.1">None.</p>
    4755       <h3 id="rfc.section.D.11.17"><a href="#rfc.section.D.11.17">D.11.17</a>&nbsp;<a id="changes.3.since.15" href="#changes.3.since.15">Since draft-ietf-httpbis-p3-payload-15</a></h3>
    4756       <p id="rfc.section.D.11.17.p.1">Closed issues: </p>
     4749      <h3 id="rfc.section.D.10.16"><a href="#rfc.section.D.10.16">D.10.16</a>&nbsp;<a id="changes.3.since.14" href="#changes.3.since.14">Since draft-ietf-httpbis-p3-payload-14</a></h3>
     4750      <p id="rfc.section.D.10.16.p.1">None.</p>
     4751      <h3 id="rfc.section.D.10.17"><a href="#rfc.section.D.10.17">D.10.17</a>&nbsp;<a id="changes.3.since.15" href="#changes.3.since.15">Since draft-ietf-httpbis-p3-payload-15</a></h3>
     4752      <p id="rfc.section.D.10.17.p.1">Closed issues: </p>
    47574753      <ul>
    47584754         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/285">http://tools.ietf.org/wg/httpbis/trac/ticket/285</a>&gt;: "Strength of requirements on Accept re: 406"
    47594755         </li>
    47604756      </ul>
    4761       <h3 id="rfc.section.D.11.18"><a href="#rfc.section.D.11.18">D.11.18</a>&nbsp;<a id="changes.3.since.16" href="#changes.3.since.16">Since draft-ietf-httpbis-p3-payload-16</a></h3>
    4762       <p id="rfc.section.D.11.18.p.1">Closed issues: </p>
     4757      <h3 id="rfc.section.D.10.18"><a href="#rfc.section.D.10.18">D.10.18</a>&nbsp;<a id="changes.3.since.16" href="#changes.3.since.16">Since draft-ietf-httpbis-p3-payload-16</a></h3>
     4758      <p id="rfc.section.D.10.18.p.1">Closed issues: </p>
    47634759      <ul>
    47644760         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/186">http://tools.ietf.org/wg/httpbis/trac/ticket/186</a>&gt;: "Document HTTP's error-handling philosophy"
    47654761         </li>
    47664762      </ul>
    4767       <h3 id="rfc.section.D.11.19"><a href="#rfc.section.D.11.19">D.11.19</a>&nbsp;<a id="changes.3.since.17" href="#changes.3.since.17">Since draft-ietf-httpbis-p3-payload-17</a></h3>
    4768       <p id="rfc.section.D.11.19.p.1">Closed issues: </p>
     4763      <h3 id="rfc.section.D.10.19"><a href="#rfc.section.D.10.19">D.10.19</a>&nbsp;<a id="changes.3.since.17" href="#changes.3.since.17">Since draft-ietf-httpbis-p3-payload-17</a></h3>
     4764      <p id="rfc.section.D.10.19.p.1">Closed issues: </p>
    47694765      <ul>
    47704766         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/323">http://tools.ietf.org/wg/httpbis/trac/ticket/323</a>&gt;: "intended maturity level vs normative references"
    47714767         </li>
    47724768      </ul>
    4773       <h3 id="rfc.section.D.11.20"><a href="#rfc.section.D.11.20">D.11.20</a>&nbsp;<a id="changes.3.since.18" href="#changes.3.since.18">Since draft-ietf-httpbis-p3-payload-18</a></h3>
    4774       <p id="rfc.section.D.11.20.p.1">Closed issues: </p>
     4769      <h3 id="rfc.section.D.10.20"><a href="#rfc.section.D.10.20">D.10.20</a>&nbsp;<a id="changes.3.since.18" href="#changes.3.since.18">Since draft-ietf-httpbis-p3-payload-18</a></h3>
     4770      <p id="rfc.section.D.10.20.p.1">Closed issues: </p>
    47754771      <ul>
    47764772         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/330">http://tools.ietf.org/wg/httpbis/trac/ticket/330</a>&gt;: "is ETag a representation header field?"
     
    47814777         </li>
    47824778      </ul>
    4783       <h3 id="rfc.section.D.11.21"><a href="#rfc.section.D.11.21">D.11.21</a>&nbsp;<a id="changes.3.since.19" href="#changes.3.since.19">Since draft-ietf-httpbis-p3-payload-19</a></h3>
    4784       <p id="rfc.section.D.11.21.p.1">None yet.</p>
     4779      <h3 id="rfc.section.D.10.21"><a href="#rfc.section.D.10.21">D.10.21</a>&nbsp;<a id="changes.3.since.19" href="#changes.3.since.19">Since draft-ietf-httpbis-p3-payload-19</a></h3>
     4780      <p id="rfc.section.D.10.21.p.1">None yet.</p>
    47854781      <h1 id="rfc.index"><a href="#rfc.index">Index</a></h1>
    47864782      <p class="noprint"><a href="#rfc.index.1">1</a> <a href="#rfc.index.2">2</a> <a href="#rfc.index.3">3</a> <a href="#rfc.index.4">4</a> <a href="#rfc.index.5">5</a> <a href="#rfc.index.A">A</a> <a href="#rfc.index.C">C</a> <a href="#rfc.index.D">D</a> <a href="#rfc.index.E">E</a> <a href="#rfc.index.F">F</a> <a href="#rfc.index.G">G</a> <a href="#rfc.index.H">H</a> <a href="#rfc.index.I">I</a> <a href="#rfc.index.L">L</a> <a href="#rfc.index.M">M</a> <a href="#rfc.index.O">O</a> <a href="#rfc.index.P">P</a> <a href="#rfc.index.R">R</a> <a href="#rfc.index.S">S</a> <a href="#rfc.index.T">T</a> <a href="#rfc.index.U">U</a>
     
    47904786            <li><a id="rfc.index.1" href="#rfc.index.1"><b>1</b></a><ul>
    47914787                  <li>100 Continue (status code)&nbsp;&nbsp;<a href="#rfc.xref.status.100.1">4.1</a>, <a href="#rfc.iref.21"><b>4.3.1</b></a>, <a href="#rfc.xref.status.100.2">8.2</a></li>
    4792                   <li>100-continue (expect value)&nbsp;&nbsp;<a href="#rfc.iref.88"><b>7.3</b></a></li>
     4788                  <li>100-continue (expect value)&nbsp;&nbsp;<a href="#rfc.iref.103"><b>7.3</b></a></li>
    47934789                  <li>101 Switching Protocols (status code)&nbsp;&nbsp;<a href="#rfc.xref.status.101.1">4.1</a>, <a href="#rfc.iref.22"><b>4.3.2</b></a>, <a href="#rfc.xref.status.101.2">8.2</a></li>
    47944790               </ul>
     
    48414837            </li>
    48424838            <li><a id="rfc.index.A" href="#rfc.index.A"><b>A</b></a><ul>
    4843                   <li>Accept header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept.1">3.2</a>, <a href="#rfc.xref.header.accept.2">8.3</a>, <a href="#rfc.xref.header.accept.3">D.1.3</a>, <a href="#rfc.xref.header.accept.4">D.4.1</a>, <a href="#rfc.iref.a.2"><b>D.5.1</b></a></li>
    4844                   <li>Accept-Charset header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept-charset.1">3.2</a>, <a href="#rfc.xref.header.accept-charset.2">8.3</a>, <a href="#rfc.xref.header.accept-charset.3">D.4.1</a>, <a href="#rfc.iref.a.3"><b>D.5.2</b></a>, <a href="#rfc.xref.header.accept-charset.4">D.10</a></li>
    4845                   <li>Accept-Encoding header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept-encoding.1">3.2</a>, <a href="#rfc.xref.header.accept-encoding.2">8.3</a>, <a href="#rfc.xref.header.accept-encoding.3">D.1.2</a>, <a href="#rfc.xref.header.accept-encoding.4">D.4.1</a>, <a href="#rfc.iref.a.4"><b>D.5.3</b></a>, <a href="#rfc.xref.header.accept-encoding.5">D.6.1</a></li>
    4846                   <li>Accept-Language header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept-language.1">3.2</a>, <a href="#rfc.xref.header.accept-language.2">8.3</a>, <a href="#rfc.xref.header.accept-language.3">D.4.1</a>, <a href="#rfc.iref.a.5"><b>D.5.4</b></a></li>
     4839                  <li>Accept header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept.1">3.2</a>, <a href="#rfc.xref.header.accept.2">6.5</a>, <a href="#rfc.xref.header.accept.3">8.3</a>, <a href="#rfc.xref.header.accept.4">D.3.1</a>, <a href="#rfc.iref.a.2"><b>D.4.1</b></a></li>
     4840                  <li>Accept-Charset header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept-charset.1">3.2</a>, <a href="#rfc.xref.header.accept-charset.2">8.3</a>, <a href="#rfc.xref.header.accept-charset.3">D.3.1</a>, <a href="#rfc.iref.a.3"><b>D.4.2</b></a>, <a href="#rfc.xref.header.accept-charset.4">D.9</a></li>
     4841                  <li>Accept-Encoding header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept-encoding.1">3.2</a>, <a href="#rfc.xref.header.accept-encoding.2">6.4</a>, <a href="#rfc.xref.header.accept-encoding.3">8.3</a>, <a href="#rfc.xref.header.accept-encoding.4">D.3.1</a>, <a href="#rfc.iref.a.4"><b>D.4.3</b></a>, <a href="#rfc.xref.header.accept-encoding.5">D.5.1</a></li>
     4842                  <li>Accept-Language header field&nbsp;&nbsp;<a href="#rfc.xref.header.accept-language.1">3.2</a>, <a href="#rfc.xref.header.accept-language.2">8.3</a>, <a href="#rfc.xref.header.accept-language.3">D.3.1</a>, <a href="#rfc.iref.a.5"><b>D.4.4</b></a></li>
    48474843                  <li>Allow header field&nbsp;&nbsp;<a href="#rfc.xref.header.allow.1">2</a>, <a href="#rfc.xref.header.allow.2">3.3</a>, <a href="#rfc.iref.a.1"><b>7.1</b></a>, <a href="#rfc.xref.header.allow.3">8.3</a>, <a href="#rfc.xref.header.allow.4">A</a></li>
    48484844               </ul>
     
    48514847                  <li>Coding Format&nbsp;&nbsp;
    48524848                     <ul>
    4853                         <li>compress&nbsp;&nbsp;<a href="#rfc.iref.c.4">D.1.2</a></li>
    4854                         <li>deflate&nbsp;&nbsp;<a href="#rfc.iref.c.5">D.1.2</a></li>
    4855                         <li>gzip&nbsp;&nbsp;<a href="#rfc.iref.c.6">D.1.2</a></li>
     4849                        <li>compress&nbsp;&nbsp;<a href="#rfc.iref.c.4">6.4</a></li>
     4850                        <li>deflate&nbsp;&nbsp;<a href="#rfc.iref.c.5">6.4</a></li>
     4851                        <li>gzip&nbsp;&nbsp;<a href="#rfc.iref.c.6">6.4</a></li>
    48564852                     </ul>
    48574853                  </li>
    4858                   <li>compress (Coding Format)&nbsp;&nbsp;<a href="#rfc.iref.c.3">D.1.2</a></li>
     4854                  <li>compress (Coding Format)&nbsp;&nbsp;<a href="#rfc.iref.c.3">6.4</a></li>
    48594855                  <li>CONNECT method&nbsp;&nbsp;<a href="#rfc.iref.c.2"><b>2.3.8</b></a>, <a href="#rfc.xref.CONNECT.1">8.1</a>, <a href="#rfc.xref.CONNECT.2">A</a></li>
    48604856                  <li>content negotiation&nbsp;&nbsp;<a href="#rfc.iref.c.1">1.1</a></li>
    4861                   <li>Content-Encoding header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-encoding.1">8.3</a>, <a href="#rfc.xref.header.content-encoding.2">D.1.2</a>, <a href="#rfc.xref.header.content-encoding.3">D.3.1</a>, <a href="#rfc.iref.c.7"><b>D.5.5</b></a>, <a href="#rfc.xref.header.content-encoding.4">D.5.5</a></li>
    4862                   <li>Content-Language header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-language.1">8.3</a>, <a href="#rfc.xref.header.content-language.2">D.3.1</a>, <a href="#rfc.iref.c.8"><b>D.5.6</b></a></li>
    4863                   <li>Content-Location header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-location.1">2.3.4</a>, <a href="#rfc.xref.header.content-location.2">7.5</a>, <a href="#rfc.xref.header.content-location.3">8.3</a>, <a href="#rfc.xref.header.content-location.4">D.3.1</a>, <a href="#rfc.iref.c.9"><b>D.5.7</b></a>, <a href="#rfc.xref.header.content-location.5">D.10</a></li>
    4864                   <li>Content-Transfer-Encoding header field&nbsp;&nbsp;<a href="#rfc.iref.c.11">D.8.5</a>, <a href="#rfc.xref.no.content-transfer-encoding.1">D.10</a></li>
    4865                   <li>Content-Type header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">3.1</a>, <a href="#rfc.xref.header.content-type.2">4</a>, <a href="#rfc.xref.header.content-type.3">8.3</a>, <a href="#rfc.xref.header.content-type.4">D.1.3</a>, <a href="#rfc.xref.header.content-type.5">D.3.1</a>, <a href="#rfc.iref.c.10"><b>D.5.8</b></a></li>
     4857                  <li>Content-Encoding header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-encoding.1">6.4</a>, <a href="#rfc.xref.header.content-encoding.2">8.3</a>, <a href="#rfc.xref.header.content-encoding.3">D.2.1</a>, <a href="#rfc.iref.c.7"><b>D.4.5</b></a>, <a href="#rfc.xref.header.content-encoding.4">D.4.5</a></li>
     4858                  <li>Content-Language header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-language.1">8.3</a>, <a href="#rfc.xref.header.content-language.2">D.2.1</a>, <a href="#rfc.iref.c.8"><b>D.4.6</b></a></li>
     4859                  <li>Content-Location header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-location.1">2.3.4</a>, <a href="#rfc.xref.header.content-location.2">7.5</a>, <a href="#rfc.xref.header.content-location.3">8.3</a>, <a href="#rfc.xref.header.content-location.4">D.2.1</a>, <a href="#rfc.iref.c.9"><b>D.4.7</b></a>, <a href="#rfc.xref.header.content-location.5">D.9</a></li>
     4860                  <li>Content-Transfer-Encoding header field&nbsp;&nbsp;<a href="#rfc.iref.c.11">D.7.5</a>, <a href="#rfc.xref.no.content-transfer-encoding.1">D.9</a></li>
     4861                  <li>Content-Type header field&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">3.1</a>, <a href="#rfc.xref.header.content-type.2">4</a>, <a href="#rfc.xref.header.content-type.3">6.5</a>, <a href="#rfc.xref.header.content-type.4">8.3</a>, <a href="#rfc.xref.header.content-type.5">D.2.1</a>, <a href="#rfc.iref.c.10"><b>D.4.8</b></a></li>
    48664862               </ul>
    48674863            </li>
    48684864            <li><a id="rfc.index.D" href="#rfc.index.D"><b>D</b></a><ul>
    4869                   <li>Date header field&nbsp;&nbsp;<a href="#rfc.xref.header.date.1">3.3</a>, <a href="#rfc.iref.d.2"><b>7.2</b></a>, <a href="#rfc.xref.header.date.2">8.3</a></li>
    4870                   <li>deflate (Coding Format)&nbsp;&nbsp;<a href="#rfc.iref.d.3">D.1.2</a></li>
     4865                  <li>Date header field&nbsp;&nbsp;<a href="#rfc.xref.header.date.1">3.3</a>, <a href="#rfc.iref.d.3"><b>7.2</b></a>, <a href="#rfc.xref.header.date.2">8.3</a></li>
     4866                  <li>deflate (Coding Format)&nbsp;&nbsp;<a href="#rfc.iref.d.2">6.4</a></li>
    48714867                  <li>DELETE method&nbsp;&nbsp;<a href="#rfc.iref.d.1"><b>2.3.6</b></a>, <a href="#rfc.xref.DELETE.1">8.1</a></li>
    48724868                  <li><em>draft-reschke-http-status-308</em>&nbsp;&nbsp;<a href="#rfc.xref.draft-reschke-http-status-308.1">4.5.7</a>, <a href="#draft-reschke-http-status-308"><b>11.2</b></a></li>
     
    48904886                  <li><tt>Grammar</tt>&nbsp;&nbsp;
    48914887                     <ul>
    4892                         <li><tt>Accept</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.46"><b>D.5.1</b></a></li>
    4893                         <li><tt>Accept-Charset</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.50"><b>D.5.2</b></a></li>
    4894                         <li><tt>Accept-Encoding</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.51"><b>D.5.3</b></a></li>
    4895                         <li><tt>accept-ext</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.49"><b>D.5.1</b></a></li>
    4896                         <li><tt>Accept-Language</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.53"><b>D.5.4</b></a></li>
    4897                         <li><tt>accept-params</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.48"><b>D.5.1</b></a></li>
    4898                         <li><tt>Allow</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.21"><b>7.1</b></a></li>
     4888                        <li><tt>Accept</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.46"><b>D.4.1</b></a></li>
     4889                        <li><tt>Accept-Charset</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.50"><b>D.4.2</b></a></li>
     4890                        <li><tt>Accept-Encoding</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.51"><b>D.4.3</b></a></li>
     4891                        <li><tt>accept-ext</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.49"><b>D.4.1</b></a></li>
     4892                        <li><tt>Accept-Language</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.53"><b>D.4.4</b></a></li>
     4893                        <li><tt>accept-params</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.48"><b>D.4.1</b></a></li>
     4894                        <li><tt>Allow</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.31"><b>7.1</b></a></li>
    48994895                        <li><tt>asctime-date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.18"><b>6.1</b></a></li>
    4900                         <li><tt>attribute</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.43"><b>D.1.3</b></a></li>
    4901                         <li><tt>charset</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.36"><b>D.1.1</b></a></li>
    4902                         <li><tt>codings</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.52"><b>D.5.3</b></a></li>
    4903                         <li><tt>content-coding</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.37"><b>D.1.2</b></a></li>
    4904                         <li><tt>Content-Encoding</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.55"><b>D.5.5</b></a></li>
    4905                         <li><tt>Content-Language</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.56"><b>D.5.6</b></a></li>
    4906                         <li><tt>Content-Location</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.57"><b>D.5.7</b></a></li>
    4907                         <li><tt>Content-Type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.58"><b>D.5.8</b></a></li>
    4908                         <li><tt>Date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.22"><b>7.2</b></a></li>
     4896                        <li><tt>attribute</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.28"><b>6.5</b></a></li>
     4897                        <li><tt>charset</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.21"><b>6.3</b></a></li>
     4898                        <li><tt>codings</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.52"><b>D.4.3</b></a></li>
     4899                        <li><tt>content-coding</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.22"><b>6.4</b></a></li>
     4900                        <li><tt>Content-Encoding</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.55"><b>D.4.5</b></a></li>
     4901                        <li><tt>Content-Language</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.56"><b>D.4.6</b></a></li>
     4902                        <li><tt>Content-Location</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.57"><b>D.4.7</b></a></li>
     4903                        <li><tt>Content-Type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.58"><b>D.4.8</b></a></li>
     4904                        <li><tt>Date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.32"><b>7.2</b></a></li>
    49094905                        <li><tt>date1</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.5"><b>6.1</b></a></li>
    49104906                        <li><tt>day</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.12"><b>6.1</b></a></li>
    49114907                        <li><tt>day-name</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.10"><b>6.1</b></a></li>
    49124908                        <li><tt>day-name-l</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.11"><b>6.1</b></a></li>
    4913                         <li><tt>delta-seconds</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.33"><b>7.8</b></a></li>
    4914                         <li><tt>Expect</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.23"><b>7.3</b></a></li>
    4915                         <li><tt>expect-name</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.27"><b>7.3</b></a></li>
    4916                         <li><tt>expect-param</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.25"><b>7.3</b></a></li>
    4917                         <li><tt>expect-value</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.26"><b>7.3</b></a></li>
    4918                         <li><tt>expectation</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.24"><b>7.3</b></a></li>
    4919                         <li><tt>From</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.28"><b>7.4</b></a></li>
     4909                        <li><tt>delta-seconds</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.43"><b>7.8</b></a></li>
     4910                        <li><tt>Expect</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.33"><b>7.3</b></a></li>
     4911                        <li><tt>expect-name</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.37"><b>7.3</b></a></li>
     4912                        <li><tt>expect-param</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.35"><b>7.3</b></a></li>
     4913                        <li><tt>expect-value</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.36"><b>7.3</b></a></li>
     4914                        <li><tt>expectation</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.34"><b>7.3</b></a></li>
     4915                        <li><tt>From</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.38"><b>7.4</b></a></li>
    49204916                        <li><tt>GMT</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.15"><b>6.1</b></a></li>
    49214917                        <li><tt>hour</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.7"><b>6.1</b></a></li>
    49224918                        <li><tt>HTTP-date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.3"><b>6.1</b></a></li>
    4923                         <li><tt>language-range</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.54"><b>D.5.4</b></a></li>
    4924                         <li><tt>language-tag</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.45"><b>D.1.4</b></a></li>
    4925                         <li><tt>Location</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.29"><b>7.5</b></a></li>
    4926                         <li><tt>Max-Forwards</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.30"><b>7.6</b></a></li>
    4927                         <li><tt>media-range</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.47"><b>D.5.1</b></a></li>
    4928                         <li><tt>media-type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.39"><b>D.1.3</b></a></li>
     4919                        <li><tt>language-range</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.54"><b>D.4.4</b></a></li>
     4920                        <li><tt>language-tag</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.30"><b>6.6</b></a></li>
     4921                        <li><tt>Location</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.39"><b>7.5</b></a></li>
     4922                        <li><tt>Max-Forwards</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.40"><b>7.6</b></a></li>
     4923                        <li><tt>media-range</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.47"><b>D.4.1</b></a></li>
     4924                        <li><tt>media-type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.24"><b>6.5</b></a></li>
    49294925                        <li><tt>method</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.1"><b>2</b></a></li>
    4930                         <li><tt>MIME-Version</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.59"><b>D.8.1</b></a></li>
     4926                        <li><tt>MIME-Version</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.59"><b>D.7.1</b></a></li>
    49314927                        <li><tt>minute</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.8"><b>6.1</b></a></li>
    49324928                        <li><tt>month</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.13"><b>6.1</b></a></li>
    49334929                        <li><tt>obs-date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.16"><b>6.1</b></a></li>
    4934                         <li><tt>parameter</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.42"><b>D.1.3</b></a></li>
     4930                        <li><tt>parameter</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.27"><b>6.5</b></a></li>
    49354931                        <li><tt>product</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.19"><b>6.2</b></a></li>
    49364932                        <li><tt>product-version</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.20"><b>6.2</b></a></li>
    4937                         <li><tt>Referer</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.31"><b>7.7</b></a></li>
    4938                         <li><tt>Retry-After</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.32"><b>7.8</b></a></li>
     4933                        <li><tt>Referer</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.41"><b>7.7</b></a></li>
     4934                        <li><tt>Retry-After</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.42"><b>7.8</b></a></li>
    49394935                        <li><tt>rfc1123-date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.4"><b>6.1</b></a></li>
    49404936                        <li><tt>rfc850-date</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.17"><b>6.1</b></a></li>
    49414937                        <li><tt>second</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.9"><b>6.1</b></a></li>
    4942                         <li><tt>Server</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.34"><b>7.9</b></a></li>
    4943                         <li><tt>subtype</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.41"><b>D.1.3</b></a></li>
     4938                        <li><tt>Server</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.44"><b>7.9</b></a></li>
     4939                        <li><tt>subtype</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.26"><b>6.5</b></a></li>
    49444940                        <li><tt>time-of-day</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.6"><b>6.1</b></a></li>
    4945                         <li><tt>type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.40"><b>D.1.3</b></a></li>
    4946                         <li><tt>User-Agent</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.35"><b>7.10</b></a></li>
    4947                         <li><tt>value</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.44"><b>D.1.3</b></a></li>
     4941                        <li><tt>type</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.25"><b>6.5</b></a></li>
     4942                        <li><tt>User-Agent</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.45"><b>7.10</b></a></li>
     4943                        <li><tt>value</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.29"><b>6.5</b></a></li>
    49484944                        <li><tt>year</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.14"><b>6.1</b></a></li>
    49494945                     </ul>
    49504946                  </li>
    4951                   <li>gzip (Coding Format)&nbsp;&nbsp;<a href="#rfc.iref.g.38">D.1.2</a></li>
     4947                  <li>gzip (Coding Format)&nbsp;&nbsp;<a href="#rfc.iref.g.23">6.4</a></li>
    49524948               </ul>
    49534949            </li>
     
    49564952                  <li>Header Fields&nbsp;&nbsp;
    49574953                     <ul>
    4958                         <li>Accept&nbsp;&nbsp;<a href="#rfc.xref.header.accept.1">3.2</a>, <a href="#rfc.xref.header.accept.2">8.3</a>, <a href="#rfc.xref.header.accept.3">D.1.3</a>, <a href="#rfc.xref.header.accept.4">D.4.1</a>, <a href="#rfc.iref.h.12"><b>D.5.1</b></a></li>
    4959                         <li>Accept-Charset&nbsp;&nbsp;<a href="#rfc.xref.header.accept-charset.1">3.2</a>, <a href="#rfc.xref.header.accept-charset.2">8.3</a>, <a href="#rfc.xref.header.accept-charset.3">D.4.1</a>, <a href="#rfc.iref.h.13"><b>D.5.2</b></a>, <a href="#rfc.xref.header.accept-charset.4">D.10</a></li>
    4960                         <li>Accept-Encoding&nbsp;&nbsp;<a href="#rfc.xref.header.accept-encoding.1">3.2</a>, <a href="#rfc.xref.header.accept-encoding.2">8.3</a>, <a href="#rfc.xref.header.accept-encoding.3">D.1.2</a>, <a href="#rfc.xref.header.accept-encoding.4">D.4.1</a>, <a href="#rfc.iref.h.14"><b>D.5.3</b></a>, <a href="#rfc.xref.header.accept-encoding.5">D.6.1</a></li>
    4961                         <li>Accept-Language&nbsp;&nbsp;<a href="#rfc.xref.header.accept-language.1">3.2</a>, <a href="#rfc.xref.header.accept-language.2">8.3</a>, <a href="#rfc.xref.header.accept-language.3">D.4.1</a>, <a href="#rfc.iref.h.15"><b>D.5.4</b></a></li>
     4954                        <li>Accept&nbsp;&nbsp;<a href="#rfc.xref.header.accept.1">3.2</a>, <a href="#rfc.xref.header.accept.2">6.5</a>, <a href="#rfc.xref.header.accept.3">8.3</a>, <a href="#rfc.xref.header.accept.4">D.3.1</a>, <a href="#rfc.iref.h.12"><b>D.4.1</b></a></li>
     4955                        <li>Accept-Charset&nbsp;&nbsp;<a href="#rfc.xref.header.accept-charset.1">3.2</a>, <a href="#rfc.xref.header.accept-charset.2">8.3</a>, <a href="#rfc.xref.header.accept-charset.3">D.3.1</a>, <a href="#rfc.iref.h.13"><b>D.4.2</b></a>, <a href="#rfc.xref.header.accept-charset.4">D.9</a></li>
     4956                        <li>Accept-Encoding&nbsp;&nbsp;<a href="#rfc.xref.header.accept-encoding.1">3.2</a>, <a href="#rfc.xref.header.accept-encoding.2">6.4</a>, <a href="#rfc.xref.header.accept-encoding.3">8.3</a>, <a href="#rfc.xref.header.accept-encoding.4">D.3.1</a>, <a href="#rfc.iref.h.14"><b>D.4.3</b></a>, <a href="#rfc.xref.header.accept-encoding.5">D.5.1</a></li>
     4957                        <li>Accept-Language&nbsp;&nbsp;<a href="#rfc.xref.header.accept-language.1">3.2</a>, <a href="#rfc.xref.header.accept-language.2">8.3</a>, <a href="#rfc.xref.header.accept-language.3">D.3.1</a>, <a href="#rfc.iref.h.15"><b>D.4.4</b></a></li>
    49624958                        <li>Allow&nbsp;&nbsp;<a href="#rfc.xref.header.allow.1">2</a>, <a href="#rfc.xref.header.allow.2">3.3</a>, <a href="#rfc.iref.h.2"><b>7.1</b></a>, <a href="#rfc.xref.header.allow.3">8.3</a>, <a href="#rfc.xref.header.allow.4">A</a></li>
    4963                         <li>Content-Encoding&nbsp;&nbsp;<a href="#rfc.xref.header.content-encoding.1">8.3</a>, <a href="#rfc.xref.header.content-encoding.2">D.1.2</a>, <a href="#rfc.xref.header.content-encoding.3">D.3.1</a>, <a href="#rfc.iref.h.16"><b>D.5.5</b></a>, <a href="#rfc.xref.header.content-encoding.4">D.5.5</a></li>
    4964                         <li>Content-Language&nbsp;&nbsp;<a href="#rfc.xref.header.content-language.1">8.3</a>, <a href="#rfc.xref.header.content-language.2">D.3.1</a>, <a href="#rfc.iref.h.17"><b>D.5.6</b></a></li>
    4965                         <li>Content-Location&nbsp;&nbsp;<a href="#rfc.xref.header.content-location.1">2.3.4</a>, <a href="#rfc.xref.header.content-location.2">7.5</a>, <a href="#rfc.xref.header.content-location.3">8.3</a>, <a href="#rfc.xref.header.content-location.4">D.3.1</a>, <a href="#rfc.iref.h.18"><b>D.5.7</b></a>, <a href="#rfc.xref.header.content-location.5">D.10</a></li>
    4966                         <li>Content-Transfer-Encoding&nbsp;&nbsp;<a href="#rfc.iref.h.21">D.8.5</a>, <a href="#rfc.xref.no.content-transfer-encoding.1">D.10</a></li>
    4967                         <li>Content-Type&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">3.1</a>, <a href="#rfc.xref.header.content-type.2">4</a>, <a href="#rfc.xref.header.content-type.3">8.3</a>, <a href="#rfc.xref.header.content-type.4">D.1.3</a>, <a href="#rfc.xref.header.content-type.5">D.3.1</a>, <a href="#rfc.iref.h.19"><b>D.5.8</b></a></li>
     4959                        <li>Content-Encoding&nbsp;&nbsp;<a href="#rfc.xref.header.content-encoding.1">6.4</a>, <a href="#rfc.xref.header.content-encoding.2">8.3</a>, <a href="#rfc.xref.header.content-encoding.3">D.2.1</a>, <a href="#rfc.iref.h.16"><b>D.4.5</b></a>, <a href="#rfc.xref.header.content-encoding.4">D.4.5</a></li>
     4960                        <li>Content-Language&nbsp;&nbsp;<a href="#rfc.xref.header.content-language.1">8.3</a>, <a href="#rfc.xref.header.content-language.2">D.2.1</a>, <a href="#rfc.iref.h.17"><b>D.4.6</b></a></li>
     4961                        <li>Content-Location&nbsp;&nbsp;<a href="#rfc.xref.header.content-location.1">2.3.4</a>, <a href="#rfc.xref.header.content-location.2">7.5</a>, <a href="#rfc.xref.header.content-location.3">8.3</a>, <a href="#rfc.xref.header.content-location.4">D.2.1</a>, <a href="#rfc.iref.h.18"><b>D.4.7</b></a>, <a href="#rfc.xref.header.content-location.5">D.9</a></li>
     4962                        <li>Content-Transfer-Encoding&nbsp;&nbsp;<a href="#rfc.iref.h.21">D.7.5</a>, <a href="#rfc.xref.no.content-transfer-encoding.1">D.9</a></li>
     4963                        <li>Content-Type&nbsp;&nbsp;<a href="#rfc.xref.header.content-type.1">3.1</a>, <a href="#rfc.xref.header.content-type.2">4</a>, <a href="#rfc.xref.header.content-type.3">6.5</a>, <a href="#rfc.xref.header.content-type.4">8.3</a>, <a href="#rfc.xref.header.content-type.5">D.2.1</a>, <a href="#rfc.iref.h.19"><b>D.4.8</b></a></li>
    49684964                        <li>Date&nbsp;&nbsp;<a href="#rfc.xref.header.date.1">3.3</a>, <a href="#rfc.iref.h.3"><b>7.2</b></a>, <a href="#rfc.xref.header.date.2">8.3</a></li>
    49694965                        <li>Expect&nbsp;&nbsp;<a href="#rfc.xref.header.expect.1">3.2</a>, <a href="#rfc.xref.header.expect.2">4.6.14</a>, <a href="#rfc.iref.h.4"><b>7.3</b></a>, <a href="#rfc.xref.header.expect.3">8.3</a>, <a href="#rfc.xref.header.expect.4">A</a></li>
     
    49714967                        <li>Location&nbsp;&nbsp;<a href="#rfc.xref.header.location.1">2.3.4</a>, <a href="#rfc.xref.header.location.2">3.3</a>, <a href="#rfc.xref.header.location.3">4.5</a>, <a href="#rfc.iref.h.6"><b>7.5</b></a>, <a href="#rfc.xref.header.location.4">8.3</a>, <a href="#rfc.xref.header.location.5">A</a></li>
    49724968                        <li>Max-Forwards&nbsp;&nbsp;<a href="#rfc.xref.header.max-forwards.1">2.3.1</a>, <a href="#rfc.xref.header.max-forwards.2">2.3.7</a>, <a href="#rfc.xref.header.max-forwards.3">3.2</a>, <a href="#rfc.iref.h.7"><b>7.6</b></a>, <a href="#rfc.xref.header.max-forwards.4">8.3</a>, <a href="#rfc.xref.header.max-forwards.5">A</a></li>
    4973                         <li>MIME-Version&nbsp;&nbsp;<a href="#rfc.xref.mime-version.1">8.3</a>, <a href="#rfc.iref.h.20"><b>D.8.1</b></a></li>
     4969                        <li>MIME-Version&nbsp;&nbsp;<a href="#rfc.xref.mime-version.1">8.3</a>, <a href="#rfc.iref.h.20"><b>D.7.1</b></a></li>
    49744970                        <li>Referer&nbsp;&nbsp;<a href="#rfc.xref.header.referer.1">3.2</a>, <a href="#rfc.iref.h.8"><b>7.7</b></a>, <a href="#rfc.xref.header.referer.2">8.3</a>, <a href="#rfc.xref.header.referer.3">A</a></li>
    49754971                        <li>Retry-After&nbsp;&nbsp;<a href="#rfc.xref.header.retry-after.1">3.3</a>, <a href="#rfc.xref.header.retry-after.2">4.7.4</a>, <a href="#rfc.iref.h.9"><b>7.8</b></a>, <a href="#rfc.xref.header.retry-after.3">8.3</a></li>
    49764972                        <li>Server&nbsp;&nbsp;<a href="#rfc.xref.header.server.1">3.3</a>, <a href="#rfc.iref.h.10"><b>7.9</b></a>, <a href="#rfc.xref.header.server.2">8.3</a>, <a href="#rfc.xref.header.server.3">9.1</a>, <a href="#rfc.xref.header.server.4">A</a></li>
    4977                         <li>User-Agent&nbsp;&nbsp;<a href="#rfc.xref.header.user-agent.1">3.2</a>, <a href="#rfc.iref.h.11"><b>7.10</b></a>, <a href="#rfc.xref.header.user-agent.2">8.3</a>, <a href="#rfc.xref.header.user-agent.3">9.1</a>, <a href="#rfc.xref.header.user-agent.4">D.4.1</a></li>
     4973                        <li>User-Agent&nbsp;&nbsp;<a href="#rfc.xref.header.user-agent.1">3.2</a>, <a href="#rfc.iref.h.11"><b>7.10</b></a>, <a href="#rfc.xref.header.user-agent.2">8.3</a>, <a href="#rfc.xref.header.user-agent.3">9.1</a>, <a href="#rfc.xref.header.user-agent.4">D.3.1</a></li>
    49784974                     </ul>
    49794975                  </li>
     
    50024998                     </ul>
    50034999                  </li>
    5004                   <li>MIME-Version header field&nbsp;&nbsp;<a href="#rfc.xref.mime-version.1">8.3</a>, <a href="#rfc.iref.m.10"><b>D.8.1</b></a></li>
     5000                  <li>MIME-Version header field&nbsp;&nbsp;<a href="#rfc.xref.mime-version.1">8.3</a>, <a href="#rfc.iref.m.10"><b>D.7.1</b></a></li>
    50055001               </ul>
    50065002            </li>
     
    50105006            </li>
    50115007            <li><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul>
    5012                   <li><em>Part1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.1">1</a>, <a href="#rfc.xref.Part1.2">1.2</a>, <a href="#rfc.xref.Part1.3">1.3</a>, <a href="#rfc.xref.Part1.4">1.3.1</a>, <a href="#rfc.xref.Part1.5">1.3.1</a>, <a href="#rfc.xref.Part1.6">1.3.1</a>, <a href="#rfc.xref.Part1.7">1.3.1</a>, <a href="#rfc.xref.Part1.8">1.3.1</a>, <a href="#rfc.xref.Part1.9">1.3.1</a>, <a href="#rfc.xref.Part1.10">1.3.1</a>, <a href="#rfc.xref.Part1.11">1.3.1</a>, <a href="#rfc.xref.Part1.12">1.3.2</a>, <a href="#rfc.xref.Part1.13">1.3.2</a>, <a href="#rfc.xref.Part1.14">1.3.2</a>, <a href="#rfc.xref.Part1.15">1.3.2</a>, <a href="#rfc.xref.Part1.16">2</a>, <a href="#rfc.xref.Part1.17">2.2.1</a>, <a href="#rfc.xref.Part1.18">2.3.1</a>, <a href="#rfc.xref.Part1.19">2.3.7</a>, <a href="#rfc.xref.Part1.20">2.3.7</a>, <a href="#rfc.xref.Part1.21">2.3.8</a>, <a href="#rfc.xref.Part1.22">3</a>, <a href="#rfc.xref.Part1.23">3.1</a>, <a href="#rfc.xref.Part1.24">3.1</a>, <a href="#rfc.xref.Part1.25">3.1</a>, <a href="#rfc.xref.Part1.26">3.1</a>, <a href="#rfc.xref.Part1.27">3.1</a>, <a href="#rfc.xref.Part1.28">3.2</a>, <a href="#rfc.xref.Part1.29">3.2</a>, <a href="#rfc.xref.Part1.30">3.3</a>, <a href="#rfc.xref.Part1.31">4.3.1</a>, <a href="#rfc.xref.Part1.32">4.3.2</a>, <a href="#rfc.xref.Part1.33">4.4.4</a>, <a href="#rfc.xref.Part1.34">4.4.6</a>, <a href="#rfc.xref.Part1.35">4.6.15</a>, <a href="#rfc.xref.Part1.36">4.7.6</a>, <a href="#rfc.xref.Part1.37">5</a>, <a href="#rfc.xref.Part1.38">5.1</a>, <a href="#rfc.xref.Part1.39">7.3</a>, <a href="#rfc.xref.Part1.40">7.9</a>, <a href="#rfc.xref.Part1.41">7.9</a>, <a href="#rfc.xref.Part1.42">7.10</a>, <a href="#rfc.xref.Part1.43">10</a>, <a href="#Part1"><b>11.1</b></a>, <a href="#rfc.xref.Part1.44">A</a>, <a href="#rfc.xref.Part1.45">D.1.2</a>, <a href="#rfc.xref.Part1.46">D.1.2</a>, <a href="#rfc.xref.Part1.47">D.1.2</a>, <a href="#rfc.xref.Part1.48">D.1.2.1</a>, <a href="#rfc.xref.Part1.49">D.1.2.1</a>, <a href="#rfc.xref.Part1.50">D.2.1</a>, <a href="#rfc.xref.Part1.51">D.2.2</a>, <a href="#rfc.xref.Part1.52">D.4.1</a>, <a href="#rfc.xref.Part1.53">D.5.1</a>, <a href="#rfc.xref.Part1.54">D.5.3</a>, <a href="#rfc.xref.Part1.55">D.5.7</a>, <a href="#rfc.xref.Part1.56">D.6.1</a>, <a href="#rfc.xref.Part1.57">D.6.1</a>, <a href="#rfc.xref.Part1.58">D.6.1</a>, <a href="#rfc.xref.Part1.59">D.8.6</a><ul>
     5008                  <li><em>Part1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.1">1</a>, <a href="#rfc.xref.Part1.2">1.2</a>, <a href="#rfc.xref.Part1.3">1.3</a>, <a href="#rfc.xref.Part1.4">1.3.1</a>, <a href="#rfc.xref.Part1.5">1.3.1</a>, <a href="#rfc.xref.Part1.6">1.3.1</a>, <a href="#rfc.xref.Part1.7">1.3.1</a>, <a href="#rfc.xref.Part1.8">1.3.1</a>, <a href="#rfc.xref.Part1.9">1.3.1</a>, <a href="#rfc.xref.Part1.10">1.3.1</a>, <a href="#rfc.xref.Part1.11">1.3.1</a>, <a href="#rfc.xref.Part1.12">1.3.2</a>, <a href="#rfc.xref.Part1.13">1.3.2</a>, <a href="#rfc.xref.Part1.14">1.3.2</a>, <a href="#rfc.xref.Part1.15">1.3.2</a>, <a href="#rfc.xref.Part1.16">2</a>, <a href="#rfc.xref.Part1.17">2.2.1</a>, <a href="#rfc.xref.Part1.18">2.3.1</a>, <a href="#rfc.xref.Part1.19">2.3.7</a>, <a href="#rfc.xref.Part1.20">2.3.7</a>, <a href="#rfc.xref.Part1.21">2.3.8</a>, <a href="#rfc.xref.Part1.22">3</a>, <a href="#rfc.xref.Part1.23">3.1</a>, <a href="#rfc.xref.Part1.24">3.1</a>, <a href="#rfc.xref.Part1.25">3.1</a>, <a href="#rfc.xref.Part1.26">3.1</a>, <a href="#rfc.xref.Part1.27">3.1</a>, <a href="#rfc.xref.Part1.28">3.2</a>, <a href="#rfc.xref.Part1.29">3.2</a>, <a href="#rfc.xref.Part1.30">3.3</a>, <a href="#rfc.xref.Part1.31">4.3.1</a>, <a href="#rfc.xref.Part1.32">4.3.2</a>, <a href="#rfc.xref.Part1.33">4.4.4</a>, <a href="#rfc.xref.Part1.34">4.4.6</a>, <a href="#rfc.xref.Part1.35">4.6.15</a>, <a href="#rfc.xref.Part1.36">4.7.6</a>, <a href="#rfc.xref.Part1.37">5</a>, <a href="#rfc.xref.Part1.38">5.1</a>, <a href="#rfc.xref.Part1.39">6.4</a>, <a href="#rfc.xref.Part1.40">6.4</a>, <a href="#rfc.xref.Part1.41">6.4</a>, <a href="#rfc.xref.Part1.42">6.4.1</a>, <a href="#rfc.xref.Part1.43">6.4.1</a>, <a href="#rfc.xref.Part1.44">7.3</a>, <a href="#rfc.xref.Part1.45">7.9</a>, <a href="#rfc.xref.Part1.46">7.9</a>, <a href="#rfc.xref.Part1.47">7.10</a>, <a href="#rfc.xref.Part1.48">10</a>, <a href="#Part1"><b>11.1</b></a>, <a href="#rfc.xref.Part1.49">A</a>, <a href="#rfc.xref.Part1.50">D.1.1</a>, <a href="#rfc.xref.Part1.51">D.1.2</a>, <a href="#rfc.xref.Part1.52">D.3.1</a>, <a href="#rfc.xref.Part1.53">D.4.1</a>, <a href="#rfc.xref.Part1.54">D.4.3</a>, <a href="#rfc.xref.Part1.55">D.4.7</a>, <a href="#rfc.xref.Part1.56">D.5.1</a>, <a href="#rfc.xref.Part1.57">D.5.1</a>, <a href="#rfc.xref.Part1.58">D.5.1</a>, <a href="#rfc.xref.Part1.59">D.7.6</a><ul>
    50135009                        <li><em>Section 1.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.3">1.3</a></li>
    50145010                        <li><em>Section 2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.2">1.2</a></li>
     
    50175013                        <li><em>Section 2.7</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.12">1.3.2</a>, <a href="#rfc.xref.Part1.14">1.3.2</a>, <a href="#rfc.xref.Part1.15">1.3.2</a></li>
    50185014                        <li><em>Section 3.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.5">1.3.1</a>, <a href="#rfc.xref.Part1.6">1.3.1</a>, <a href="#rfc.xref.Part1.7">1.3.1</a></li>
    5019                         <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.22">3</a>, <a href="#rfc.xref.Part1.25">3.1</a>, <a href="#rfc.xref.Part1.40">7.9</a>, <a href="#rfc.xref.Part1.42">7.10</a></li>
     5015                        <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.22">3</a>, <a href="#rfc.xref.Part1.25">3.1</a>, <a href="#rfc.xref.Part1.45">7.9</a>, <a href="#rfc.xref.Part1.47">7.10</a></li>
    50205016                        <li><em>Section 3.2.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.8">1.3.1</a>, <a href="#rfc.xref.Part1.9">1.3.1</a>, <a href="#rfc.xref.Part1.10">1.3.1</a>, <a href="#rfc.xref.Part1.11">1.3.1</a>, <a href="#rfc.xref.Part1.13">1.3.2</a>, <a href="#rfc.xref.Part1.24">3.1</a></li>
    50215017                        <li><em>Section 3.2.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.23">3.1</a></li>
    5022                         <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.17">2.2.1</a>, <a href="#rfc.xref.Part1.34">4.4.6</a>, <a href="#rfc.xref.Part1.37">5</a>, <a href="#rfc.xref.Part1.51">D.2.2</a></li>
    5023                         <li><em>Section 3.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.59">D.8.6</a></li>
    5024                         <li><em>Section 3.3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.50">D.2.1</a></li>
    5025                         <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.48">D.1.2.1</a></li>
     5018                        <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.17">2.2.1</a>, <a href="#rfc.xref.Part1.34">4.4.6</a>, <a href="#rfc.xref.Part1.37">5</a>, <a href="#rfc.xref.Part1.51">D.1.2</a></li>
     5019                        <li><em>Section 3.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.59">D.7.6</a></li>
     5020                        <li><em>Section 3.3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.50">D.1.1</a></li>
     5021                        <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.42">6.4.1</a></li>
    50265022                        <li><em>Section 4.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.27">3.1</a></li>
    5027                         <li><em>Section 4.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.45">D.1.2</a>, <a href="#rfc.xref.Part1.56">D.6.1</a></li>
    5028                         <li><em>Section 4.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.49">D.1.2.1</a></li>
    5029                         <li><em>Section 4.2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.46">D.1.2</a>, <a href="#rfc.xref.Part1.57">D.6.1</a></li>
    5030                         <li><em>Section 4.2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.47">D.1.2</a>, <a href="#rfc.xref.Part1.58">D.6.1</a></li>
     5023                        <li><em>Section 4.2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.39">6.4</a>, <a href="#rfc.xref.Part1.56">D.5.1</a></li>
     5024                        <li><em>Section 4.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.43">6.4.1</a></li>
     5025                        <li><em>Section 4.2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.40">6.4</a>, <a href="#rfc.xref.Part1.57">D.5.1</a></li>
     5026                        <li><em>Section 4.2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.41">6.4</a>, <a href="#rfc.xref.Part1.58">D.5.1</a></li>
    50315027                        <li><em>Section 4.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.29">3.2</a></li>
    5032                         <li><em>Section 4.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.52">D.4.1</a>, <a href="#rfc.xref.Part1.53">D.5.1</a>, <a href="#rfc.xref.Part1.54">D.5.3</a></li>
     5028                        <li><em>Section 4.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.52">D.3.1</a>, <a href="#rfc.xref.Part1.53">D.4.1</a>, <a href="#rfc.xref.Part1.54">D.4.3</a></li>
    50335029                        <li><em>Section 5.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.18">2.3.1</a>, <a href="#rfc.xref.Part1.21">2.3.8</a></li>
    50345030                        <li><em>Section 5.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.28">3.2</a></li>
    5035                         <li><em>Section 5.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.16">2</a>, <a href="#rfc.xref.Part1.30">3.3</a>, <a href="#rfc.xref.Part1.38">5.1</a>, <a href="#rfc.xref.Part1.55">D.5.7</a></li>
     5031                        <li><em>Section 5.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.16">2</a>, <a href="#rfc.xref.Part1.30">3.3</a>, <a href="#rfc.xref.Part1.38">5.1</a>, <a href="#rfc.xref.Part1.55">D.4.7</a></li>
    50365032                        <li><em>Section 6.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.26">3.1</a></li>
    5037                         <li><em>Section 6.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.19">2.3.7</a>, <a href="#rfc.xref.Part1.41">7.9</a>, <a href="#rfc.xref.Part1.44">A</a></li>
    5038                         <li><em>Section 6.4.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.31">4.3.1</a>, <a href="#rfc.xref.Part1.39">7.3</a></li>
     5033                        <li><em>Section 6.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.19">2.3.7</a>, <a href="#rfc.xref.Part1.46">7.9</a>, <a href="#rfc.xref.Part1.49">A</a></li>
     5034                        <li><em>Section 6.4.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.31">4.3.1</a>, <a href="#rfc.xref.Part1.44">7.3</a></li>
    50395035                        <li><em>Section 6.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.32">4.3.2</a>, <a href="#rfc.xref.Part1.35">4.6.15</a></li>
    50405036                        <li><em>Section 7.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.20">2.3.7</a></li>
    5041                         <li><em>Section 9</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.43">10</a></li>
     5037                        <li><em>Section 9</em>&nbsp;&nbsp;<a href="#rfc.xref.Part1.48">10</a></li>
    50425038                     </ul>
    50435039                  </li>
    5044                   <li><em>Part4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.1">3.2</a>, <a href="#rfc.xref.Part4.2">3.2</a>, <a href="#rfc.xref.Part4.3">3.2</a>, <a href="#rfc.xref.Part4.4">3.2</a>, <a href="#rfc.xref.Part4.5">3.3</a>, <a href="#rfc.xref.Part4.6">4.1</a>, <a href="#rfc.xref.Part4.7">4.1</a>, <a href="#rfc.xref.Part4.8">4.1</a>, <a href="#rfc.xref.Part4.9">4.4.2</a>, <a href="#rfc.xref.Part4.10">4.5</a>, <a href="#Part4"><b>11.1</b></a>, <a href="#rfc.xref.Part4.11">C.2</a>, <a href="#rfc.xref.Part4.12">D.3.1</a>, <a href="#rfc.xref.Part4.13">D.3.1</a><ul>
    5045                         <li><em>Section 2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.13">D.3.1</a></li>
    5046                         <li><em>Section 2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.5">3.3</a>, <a href="#rfc.xref.Part4.9">4.4.2</a>, <a href="#rfc.xref.Part4.12">D.3.1</a></li>
     5040                  <li><em>Part4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.1">3.2</a>, <a href="#rfc.xref.Part4.2">3.2</a>, <a href="#rfc.xref.Part4.3">3.2</a>, <a href="#rfc.xref.Part4.4">3.2</a>, <a href="#rfc.xref.Part4.5">3.3</a>, <a href="#rfc.xref.Part4.6">4.1</a>, <a href="#rfc.xref.Part4.7">4.1</a>, <a href="#rfc.xref.Part4.8">4.1</a>, <a href="#rfc.xref.Part4.9">4.4.2</a>, <a href="#rfc.xref.Part4.10">4.5</a>, <a href="#Part4"><b>11.1</b></a>, <a href="#rfc.xref.Part4.11">C.2</a>, <a href="#rfc.xref.Part4.12">D.2.1</a>, <a href="#rfc.xref.Part4.13">D.2.1</a><ul>
     5041                        <li><em>Section 2.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.13">D.2.1</a></li>
     5042                        <li><em>Section 2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.5">3.3</a>, <a href="#rfc.xref.Part4.9">4.4.2</a>, <a href="#rfc.xref.Part4.12">D.2.1</a></li>
    50475043                        <li><em>Section 3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.1">3.2</a></li>
    50485044                        <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part4.3">3.2</a></li>
     
    50545050                     </ul>
    50555051                  </li>
    5056                   <li><em>Part5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.1">2.3.2</a>, <a href="#rfc.xref.Part5.2">3.2</a>, <a href="#rfc.xref.Part5.3">3.2</a>, <a href="#rfc.xref.Part5.4">3.3</a>, <a href="#rfc.xref.Part5.5">4.1</a>, <a href="#rfc.xref.Part5.6">4.1</a>, <a href="#rfc.xref.Part5.7">4.1</a>, <a href="#Part5"><b>11.1</b></a>, <a href="#rfc.xref.Part5.8">D.2.1</a><ul>
     5052                  <li><em>Part5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.1">2.3.2</a>, <a href="#rfc.xref.Part5.2">3.2</a>, <a href="#rfc.xref.Part5.3">3.2</a>, <a href="#rfc.xref.Part5.4">3.3</a>, <a href="#rfc.xref.Part5.5">4.1</a>, <a href="#rfc.xref.Part5.6">4.1</a>, <a href="#rfc.xref.Part5.7">4.1</a>, <a href="#Part5"><b>11.1</b></a>, <a href="#rfc.xref.Part5.8">D.1.1</a><ul>
    50575053                        <li><em>Section 3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.5">4.1</a></li>
    50585054                        <li><em>Section 3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.6">4.1</a></li>
    50595055                        <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.7">4.1</a></li>
    50605056                        <li><em>Section 5.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.4">3.3</a></li>
    5061                         <li><em>Section 5.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.8">D.2.1</a></li>
     5057                        <li><em>Section 5.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.8">D.1.1</a></li>
    50625058                        <li><em>Section 5.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.2">3.2</a></li>
    50635059                        <li><em>Section 5.4</em>&nbsp;&nbsp;<a href="#rfc.xref.Part5.1">2.3.2</a>, <a href="#rfc.xref.Part5.3">3.2</a></li>
    50645060                     </ul>
    50655061                  </li>
    5066                   <li><em>Part6</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.1">2.2.1</a>, <a href="#rfc.xref.Part6.2">2.3.2</a>, <a href="#rfc.xref.Part6.3">2.3.3</a>, <a href="#rfc.xref.Part6.4">2.3.4</a>, <a href="#rfc.xref.Part6.5">2.3.5</a>, <a href="#rfc.xref.Part6.6">2.3.6</a>, <a href="#rfc.xref.Part6.7">3.1</a>, <a href="#rfc.xref.Part6.8">3.3</a>, <a href="#rfc.xref.Part6.9">3.3</a>, <a href="#rfc.xref.Part6.10">4.2.1</a>, <a href="#rfc.xref.Part6.11">4.4.1</a>, <a href="#rfc.xref.Part6.12">4.4.4</a>, <a href="#rfc.xref.Part6.13">4.4.4</a>, <a href="#rfc.xref.Part6.14">4.4.4</a>, <a href="#rfc.xref.Part6.15">4.5.1</a>, <a href="#rfc.xref.Part6.16">4.5.2</a>, <a href="#rfc.xref.Part6.17">4.6.9</a>, <a href="#Part6"><b>11.1</b></a>, <a href="#rfc.xref.Part6.18">D.3.1</a>, <a href="#rfc.xref.Part6.19">D.4.1</a><ul>
     5062                  <li><em>Part6</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.1">2.2.1</a>, <a href="#rfc.xref.Part6.2">2.3.2</a>, <a href="#rfc.xref.Part6.3">2.3.3</a>, <a href="#rfc.xref.Part6.4">2.3.4</a>, <a href="#rfc.xref.Part6.5">2.3.5</a>, <a href="#rfc.xref.Part6.6">2.3.6</a>, <a href="#rfc.xref.Part6.7">3.1</a>, <a href="#rfc.xref.Part6.8">3.3</a>, <a href="#rfc.xref.Part6.9">3.3</a>, <a href="#rfc.xref.Part6.10">4.2.1</a>, <a href="#rfc.xref.Part6.11">4.4.1</a>, <a href="#rfc.xref.Part6.12">4.4.4</a>, <a href="#rfc.xref.Part6.13">4.4.4</a>, <a href="#rfc.xref.Part6.14">4.4.4</a>, <a href="#rfc.xref.Part6.15">4.5.1</a>, <a href="#rfc.xref.Part6.16">4.5.2</a>, <a href="#rfc.xref.Part6.17">4.6.9</a>, <a href="#Part6"><b>11.1</b></a>, <a href="#rfc.xref.Part6.18">D.2.1</a>, <a href="#rfc.xref.Part6.19">D.3.1</a><ul>
    50675063                        <li><em>Section 2.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.4">2.3.4</a></li>
    50685064                        <li><em>Section 2.3.1.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.11">4.4.1</a>, <a href="#rfc.xref.Part6.14">4.4.4</a>, <a href="#rfc.xref.Part6.15">4.5.1</a>, <a href="#rfc.xref.Part6.16">4.5.2</a>, <a href="#rfc.xref.Part6.17">4.6.9</a></li>
     
    50715067                        <li><em>Section 3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.8">3.3</a></li>
    50725068                        <li><em>Section 3.2</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.12">4.4.4</a></li>
    5073                         <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.18">D.3.1</a></li>
    5074                         <li><em>Section 3.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.9">3.3</a>, <a href="#rfc.xref.Part6.19">D.4.1</a></li>
     5069                        <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.18">D.2.1</a></li>
     5070                        <li><em>Section 3.5</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.9">3.3</a>, <a href="#rfc.xref.Part6.19">D.3.1</a></li>
    50755071                        <li><em>Section 3.6</em>&nbsp;&nbsp;<a href="#rfc.xref.Part6.13">4.4.4</a></li>
    50765072                     </ul>
     
    50865082                     </ul>
    50875083                  </li>
    5088                   <li>payload&nbsp;&nbsp;<a href="#rfc.iref.p.3">D.2</a></li>
     5084                  <li>payload&nbsp;&nbsp;<a href="#rfc.iref.p.3">D.1</a></li>
    50895085                  <li>POST method&nbsp;&nbsp;<a href="#rfc.iref.p.1"><b>2.3.4</b></a>, <a href="#rfc.xref.POST.1">8.1</a>, <a href="#rfc.xref.POST.2">A</a></li>
    50905086                  <li>PUT method&nbsp;&nbsp;<a href="#rfc.iref.p.2"><b>2.3.5</b></a>, <a href="#rfc.xref.PUT.1">8.1</a>, <a href="#rfc.xref.PUT.2">A</a></li>
     
    50935089            <li><a id="rfc.index.R" href="#rfc.index.R"><b>R</b></a><ul>
    50945090                  <li>Referer header field&nbsp;&nbsp;<a href="#rfc.xref.header.referer.1">3.2</a>, <a href="#rfc.iref.r.1"><b>7.7</b></a>, <a href="#rfc.xref.header.referer.2">8.3</a>, <a href="#rfc.xref.header.referer.3">A</a></li>
    5095                   <li>representation&nbsp;&nbsp;<a href="#rfc.iref.r.3">D.3</a></li>
     5091                  <li>representation&nbsp;&nbsp;<a href="#rfc.iref.r.3">D.2</a></li>
    50965092                  <li>Retry-After header field&nbsp;&nbsp;<a href="#rfc.xref.header.retry-after.1">3.3</a>, <a href="#rfc.xref.header.retry-after.2">4.7.4</a>, <a href="#rfc.iref.r.2"><b>7.8</b></a>, <a href="#rfc.xref.header.retry-after.3">8.3</a></li>
    50975093                  <li><em>RFC1123</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC1123.1">6.1</a>, <a href="#rfc.xref.RFC1123.2">6.1</a>, <a href="#RFC1123"><b>11.2</b></a><ul>
     
    50995095                     </ul>
    51005096                  </li>
    5101                   <li><em>RFC1945</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC1945.1">4.5</a>, <a href="#RFC1945"><b>11.2</b></a>, <a href="#rfc.xref.RFC1945.2">D.9</a><ul>
     5097                  <li><em>RFC1945</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC1945.1">4.5</a>, <a href="#RFC1945"><b>11.2</b></a>, <a href="#rfc.xref.RFC1945.2">D.8</a><ul>
    51025098                        <li><em>Section 9.3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC1945.1">4.5</a></li>
    51035099                     </ul>
    51045100                  </li>
    5105                   <li><em>RFC1950</em>&nbsp;&nbsp;<a href="#RFC1950"><b>11.1</b></a>, <a href="#rfc.xref.RFC1950.1">D.6.1</a></li>
    5106                   <li><em>RFC1951</em>&nbsp;&nbsp;<a href="#RFC1951"><b>11.1</b></a>, <a href="#rfc.xref.RFC1951.1">D.6.1</a></li>
    5107                   <li><em>RFC1952</em>&nbsp;&nbsp;<a href="#RFC1952"><b>11.1</b></a>, <a href="#rfc.xref.RFC1952.1">D.6.1</a></li>
    5108                   <li><em>RFC2045</em>&nbsp;&nbsp;<a href="#RFC2045"><b>11.1</b></a>, <a href="#rfc.xref.RFC2045.1">D.8</a>, <a href="#rfc.xref.RFC2045.2">D.8.1</a></li>
    5109                   <li><em>RFC2046</em>&nbsp;&nbsp;<a href="#RFC2046"><b>11.1</b></a>, <a href="#rfc.xref.RFC2046.1">D.1.3</a>, <a href="#rfc.xref.RFC2046.2">D.1.3.2</a>, <a href="#rfc.xref.RFC2046.3">D.3.2</a>, <a href="#rfc.xref.RFC2046.4">D.8.2</a><ul>
    5110                         <li><em>Section 4.5.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2046.3">D.3.2</a></li>
    5111                         <li><em>Section 5.1.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2046.2">D.1.3.2</a></li>
     5101                  <li><em>RFC1950</em>&nbsp;&nbsp;<a href="#RFC1950"><b>11.1</b></a>, <a href="#rfc.xref.RFC1950.1">D.5.1</a></li>
     5102                  <li><em>RFC1951</em>&nbsp;&nbsp;<a href="#RFC1951"><b>11.1</b></a>, <a href="#rfc.xref.RFC1951.1">D.5.1</a></li>
     5103                  <li><em>RFC1952</em>&nbsp;&nbsp;<a href="#RFC1952"><b>11.1</b></a>, <a href="#rfc.xref.RFC1952.1">D.5.1</a></li>
     5104                  <li><em>RFC2045</em>&nbsp;&nbsp;<a href="#RFC2045"><b>11.1</b></a>, <a href="#rfc.xref.RFC2045.1">D.7</a>, <a href="#rfc.xref.RFC2045.2">D.7.1</a></li>
     5105                  <li><em>RFC2046</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2046.1">6.5</a>, <a href="#rfc.xref.RFC2046.2">6.5.2</a>, <a href="#RFC2046"><b>11.1</b></a>, <a href="#rfc.xref.RFC2046.3">D.2.2</a>, <a href="#rfc.xref.RFC2046.4">D.7.2</a><ul>
     5106                        <li><em>Section 4.5.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2046.3">D.2.2</a></li>
     5107                        <li><em>Section 5.1.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2046.2">6.5.2</a></li>
    51125108                     </ul>
    51135109                  </li>
    5114                   <li><em>RFC2049</em>&nbsp;&nbsp;<a href="#RFC2049"><b>11.2</b></a>, <a href="#rfc.xref.RFC2049.1">D.8.2</a><ul>
    5115                         <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2049.1">D.8.2</a></li>
     5110                  <li><em>RFC2049</em>&nbsp;&nbsp;<a href="#RFC2049"><b>11.2</b></a>, <a href="#rfc.xref.RFC2049.1">D.7.2</a><ul>
     5111                        <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2049.1">D.7.2</a></li>
    51165112                     </ul>
    51175113                  </li>
    5118                   <li><em>RFC2068</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2068.1">4.5</a>, <a href="#rfc.xref.RFC2068.2">4.5</a>, <a href="#RFC2068"><b>11.2</b></a>, <a href="#rfc.xref.RFC2068.3">D.9</a><ul>
     5114                  <li><em>RFC2068</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2068.1">4.5</a>, <a href="#rfc.xref.RFC2068.2">4.5</a>, <a href="#RFC2068"><b>11.2</b></a>, <a href="#rfc.xref.RFC2068.3">D.8</a><ul>
    51195115                        <li><em>Section 10.3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2068.2">4.5</a></li>
    51205116                        <li><em>Section 10.3.4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2068.1">4.5</a></li>
    51215117                     </ul>
    51225118                  </li>
    5123                   <li><em>RFC2076</em>&nbsp;&nbsp;<a href="#RFC2076"><b>11.2</b></a>, <a href="#rfc.xref.RFC2076.1">D.9</a></li>
     5119                  <li><em>RFC2076</em>&nbsp;&nbsp;<a href="#RFC2076"><b>11.2</b></a>, <a href="#rfc.xref.RFC2076.1">D.8</a></li>
    51245120                  <li><em>RFC2119</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2119.1">1.2</a>, <a href="#RFC2119"><b>11.1</b></a></li>
    5125                   <li><em>RFC2277</em>&nbsp;&nbsp;<a href="#RFC2277"><b>11.2</b></a>, <a href="#rfc.xref.RFC2277.1">D.1.1</a></li>
    5126                   <li><em>RFC2295</em>&nbsp;&nbsp;<a href="#RFC2295"><b>11.2</b></a>, <a href="#rfc.xref.RFC2295.1">D.4</a></li>
    5127                   <li><em>RFC2388</em>&nbsp;&nbsp;<a href="#RFC2388"><b>11.2</b></a>, <a href="#rfc.xref.RFC2388.1">D.1.3.2</a></li>
    5128                   <li><em>RFC2557</em>&nbsp;&nbsp;<a href="#RFC2557"><b>11.2</b></a>, <a href="#rfc.xref.RFC2557.1">D.5.7</a>, <a href="#rfc.xref.RFC2557.2">D.8.7</a><ul>
    5129                         <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2557.1">D.5.7</a></li>
     5121                  <li><em>RFC2277</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2277.1">6.3</a>, <a href="#RFC2277"><b>11.2</b></a></li>
     5122                  <li><em>RFC2295</em>&nbsp;&nbsp;<a href="#RFC2295"><b>11.2</b></a>, <a href="#rfc.xref.RFC2295.1">D.3</a></li>
     5123                  <li><em>RFC2388</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2388.1">6.5.2</a>, <a href="#RFC2388"><b>11.2</b></a></li>
     5124                  <li><em>RFC2557</em>&nbsp;&nbsp;<a href="#RFC2557"><b>11.2</b></a>, <a href="#rfc.xref.RFC2557.1">D.4.7</a>, <a href="#rfc.xref.RFC2557.2">D.7.7</a><ul>
     5125                        <li><em>Section 4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2557.1">D.4.7</a></li>
    51305126                     </ul>
    51315127                  </li>
    5132                   <li><em>RFC2616</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2616.1">1</a>, <a href="#rfc.xref.RFC2616.2">4.5</a>, <a href="#RFC2616"><b>11.2</b></a>, <a href="#rfc.xref.RFC2616.3">C.1</a>, <a href="#rfc.xref.RFC2616.4">D.5.4</a>, <a href="#rfc.xref.RFC2616.5">D.11.1</a><ul>
     5128                  <li><em>RFC2616</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2616.1">1</a>, <a href="#rfc.xref.RFC2616.2">4.5</a>, <a href="#RFC2616"><b>11.2</b></a>, <a href="#rfc.xref.RFC2616.3">C.1</a>, <a href="#rfc.xref.RFC2616.4">D.4.4</a>, <a href="#rfc.xref.RFC2616.5">D.10.1</a><ul>
    51335129                        <li><em>Section 10.3.8</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2616.2">4.5</a></li>
    5134                         <li><em>Section 14.4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2616.4">D.5.4</a></li>
     5130                        <li><em>Section 14.4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC2616.4">D.4.4</a></li>
    51355131                     </ul>
    51365132                  </li>
     
    51395135                     </ul>
    51405136                  </li>
    5141                   <li><em>RFC3629</em>&nbsp;&nbsp;<a href="#RFC3629"><b>11.2</b></a>, <a href="#rfc.xref.RFC3629.1">D.1.1</a></li>
     5137                  <li><em>RFC3629</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC3629.1">6.3</a>, <a href="#RFC3629"><b>11.2</b></a></li>
    51425138                  <li><em>RFC3864</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC3864.1">3.1</a>, <a href="#rfc.xref.RFC3864.2">3.1</a>, <a href="#rfc.xref.RFC3864.3">8.3</a>, <a href="#RFC3864"><b>11.2</b></a><ul>
    51435139                        <li><em>Section 4.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC3864.2">3.1</a></li>
     
    51495145                     </ul>
    51505146                  </li>
    5151                   <li><em>RFC4288</em>&nbsp;&nbsp;<a href="#RFC4288"><b>11.2</b></a>, <a href="#rfc.xref.RFC4288.1">D.1.3</a></li>
    5152                   <li><em>RFC4647</em>&nbsp;&nbsp;<a href="#RFC4647"><b>11.1</b></a>, <a href="#rfc.xref.RFC4647.1">D.5.4</a>, <a href="#rfc.xref.RFC4647.2">D.5.4</a>, <a href="#rfc.xref.RFC4647.3">D.5.4</a>, <a href="#rfc.xref.RFC4647.4">D.5.4</a><ul>
    5153                         <li><em>Section 2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.1">D.5.4</a></li>
    5154                         <li><em>Section 2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.2">D.5.4</a></li>
    5155                         <li><em>Section 3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.3">D.5.4</a></li>
    5156                         <li><em>Section 3.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.4">D.5.4</a></li>
     5147                  <li><em>RFC4288</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4288.1">6.5</a>, <a href="#RFC4288"><b>11.2</b></a></li>
     5148                  <li><em>RFC4647</em>&nbsp;&nbsp;<a href="#RFC4647"><b>11.1</b></a>, <a href="#rfc.xref.RFC4647.1">D.4.4</a>, <a href="#rfc.xref.RFC4647.2">D.4.4</a>, <a href="#rfc.xref.RFC4647.3">D.4.4</a>, <a href="#rfc.xref.RFC4647.4">D.4.4</a><ul>
     5149                        <li><em>Section 2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.1">D.4.4</a></li>
     5150                        <li><em>Section 2.3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.2">D.4.4</a></li>
     5151                        <li><em>Section 3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.3">D.4.4</a></li>
     5152                        <li><em>Section 3.3.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC4647.4">D.4.4</a></li>
    51575153                     </ul>
    51585154                  </li>
    5159                   <li><em>RFC5226</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5226.1">2.2</a>, <a href="#rfc.xref.RFC5226.2">4.2</a>, <a href="#RFC5226"><b>11.2</b></a>, <a href="#rfc.xref.RFC5226.3">D.1.2.1</a><ul>
    5160                         <li><em>Section 4.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5226.1">2.2</a>, <a href="#rfc.xref.RFC5226.2">4.2</a>, <a href="#rfc.xref.RFC5226.3">D.1.2.1</a></li>
     5155                  <li><em>RFC5226</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5226.1">2.2</a>, <a href="#rfc.xref.RFC5226.2">4.2</a>, <a href="#rfc.xref.RFC5226.3">6.4.1</a>, <a href="#RFC5226"><b>11.2</b></a><ul>
     5156                        <li><em>Section 4.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5226.1">2.2</a>, <a href="#rfc.xref.RFC5226.2">4.2</a>, <a href="#rfc.xref.RFC5226.3">6.4.1</a></li>
    51615157                     </ul>
    51625158                  </li>
     
    51655161                     </ul>
    51665162                  </li>
    5167                   <li><em>RFC5322</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5322.1">6.1</a>, <a href="#rfc.xref.RFC5322.2">7.2</a>, <a href="#rfc.xref.RFC5322.3">7.4</a>, <a href="#rfc.xref.RFC5322.4">7.4</a>, <a href="#RFC5322"><b>11.2</b></a>, <a href="#rfc.xref.RFC5322.5">D.8</a><ul>
     5163                  <li><em>RFC5322</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5322.1">6.1</a>, <a href="#rfc.xref.RFC5322.2">7.2</a>, <a href="#rfc.xref.RFC5322.3">7.4</a>, <a href="#rfc.xref.RFC5322.4">7.4</a>, <a href="#RFC5322"><b>11.2</b></a>, <a href="#rfc.xref.RFC5322.5">D.7</a><ul>
    51685164                        <li><em>Section 3.3</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5322.1">6.1</a></li>
    51695165                        <li><em>Section 3.4</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5322.3">7.4</a>, <a href="#rfc.xref.RFC5322.4">7.4</a></li>
     
    51715167                     </ul>
    51725168                  </li>
    5173                   <li><em>RFC5646</em>&nbsp;&nbsp;<a href="#RFC5646"><b>11.1</b></a>, <a href="#rfc.xref.RFC5646.1">D.1.4</a>, <a href="#rfc.xref.RFC5646.2">D.1.4</a>, <a href="#rfc.xref.RFC5646.3">D.1.4</a><ul>
    5174                         <li><em>Section 2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5646.2">D.1.4</a></li>
     5169                  <li><em>RFC5646</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5646.1">6.6</a>, <a href="#rfc.xref.RFC5646.2">6.6</a>, <a href="#rfc.xref.RFC5646.3">6.6</a>, <a href="#RFC5646"><b>11.1</b></a><ul>
     5170                        <li><em>Section 2.1</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5646.2">6.6</a></li>
    51755171                     </ul>
    51765172                  </li>
    51775173                  <li><em>RFC5789</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5789.1">2.3.5</a>, <a href="#RFC5789"><b>11.2</b></a></li>
    51785174                  <li><em>RFC5987</em>&nbsp;&nbsp;<a href="#rfc.xref.RFC5987.1">3.1</a>, <a href="#RFC5987"><b>11.2</b></a></li>
    5179                   <li><em>RFC6151</em>&nbsp;&nbsp;<a href="#RFC6151"><b>11.2</b></a>, <a href="#rfc.xref.RFC6151.1">D.10</a></li>
    5180                   <li><em>RFC6266</em>&nbsp;&nbsp;<a href="#RFC6266"><b>11.2</b></a>, <a href="#rfc.xref.RFC6266.1">D.9</a>, <a href="#rfc.xref.RFC6266.2">D.10</a></li>
     5175                  <li><em>RFC6151</em>&nbsp;&nbsp;<a href="#RFC6151"><b>11.2</b></a>, <a href="#rfc.xref.RFC6151.1">D.9</a></li>
     5176                  <li><em>RFC6266</em>&nbsp;&nbsp;<a href="#RFC6266"><b>11.2</b></a>, <a href="#rfc.xref.RFC6266.1">D.8</a>, <a href="#rfc.xref.RFC6266.2">D.9</a></li>
    51815177               </ul>
    51825178            </li>
     
    52325228            </li>
    52335229            <li><a id="rfc.index.U" href="#rfc.index.U"><b>U</b></a><ul>
    5234                   <li>User-Agent header field&nbsp;&nbsp;<a href="#rfc.xref.header.user-agent.1">3.2</a>, <a href="#rfc.iref.u.1"><b>7.10</b></a>, <a href="#rfc.xref.header.user-agent.2">8.3</a>, <a href="#rfc.xref.header.user-agent.3">9.1</a>, <a href="#rfc.xref.header.user-agent.4">D.4.1</a></li>
     5230                  <li>User-Agent header field&nbsp;&nbsp;<a href="#rfc.xref.header.user-agent.1">3.2</a>, <a href="#rfc.iref.u.1"><b>7.10</b></a>, <a href="#rfc.xref.header.user-agent.2">8.3</a>, <a href="#rfc.xref.header.user-agent.3">9.1</a>, <a href="#rfc.xref.header.user-agent.4">D.3.1</a></li>
    52355231               </ul>
    52365232            </li>
  • draft-ietf-httpbis/latest/p2-semantics.xml

    r1643 r1644  
    21642164
    21652165
    2166 <section title="Common Protocol Parameters" anchor="common.protocol.parameters">
     2166<section title="Protocol Parameters" anchor="protocol.parameters">
    21672167<section title="Date/Time Formats" anchor="http.date">
    21682168  <x:anchor-alias value="HTTP-date"/>
     
    23402340   the same product &SHOULD; only differ in the product-version portion of
    23412341   the product value).
     2342</t>
     2343</section>
     2344
     2345<section title="Character Encodings (charset)" anchor="character.sets">
     2346<t>
     2347   HTTP uses charset names to indicate the character encoding of a
     2348   textual representation.
     2349</t>
     2350<t anchor="rule.charset">
     2351  <x:anchor-alias value="charset"/>
     2352   A character encoding is identified by a case-insensitive token. The
     2353   complete set of tokens is defined by the IANA Character Set registry
     2354   (<eref target="http://www.iana.org/assignments/character-sets"/>).
     2355</t>
     2356<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="charset"/>
     2357  <x:ref>charset</x:ref> = <x:ref>token</x:ref>
     2358</artwork></figure>
     2359<t>
     2360   Although HTTP allows an arbitrary token to be used as a charset
     2361   value, any token that has a predefined value within the IANA
     2362   Character Set registry &MUST; represent the character encoding defined
     2363   by that registry. Applications &SHOULD; limit their use of character
     2364   encodings to those defined within the IANA registry.
     2365</t>
     2366<t>
     2367   HTTP uses charset in two contexts: within an Accept-Charset request
     2368   header field (in which the charset value is an unquoted token) and as the
     2369   value of a parameter in a Content-Type header field (within a request or
     2370   response), in which case the parameter value of the charset parameter
     2371   can be quoted.
     2372</t>
     2373<t>
     2374   Implementors need to be aware of IETF character set requirements <xref target="RFC3629"/>
     2375   <xref target="RFC2277"/>.
     2376</t>
     2377</section>
     2378
     2379<section title="Content Codings" anchor="content.codings">
     2380  <x:anchor-alias value="content-coding"/>
     2381<t>
     2382   Content coding values indicate an encoding transformation that has
     2383   been or can be applied to a representation. Content codings are primarily
     2384   used to allow a representation to be compressed or otherwise usefully
     2385   transformed without losing the identity of its underlying media type
     2386   and without loss of information. Frequently, the representation is stored in
     2387   coded form, transmitted directly, and only decoded by the recipient.
     2388</t>
     2389<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="content-coding"/>
     2390  <x:ref>content-coding</x:ref>   = <x:ref>token</x:ref>
     2391</artwork></figure>
     2392<t>
     2393   All content-coding values are case-insensitive. HTTP/1.1 uses
     2394   content-coding values in the Accept-Encoding (<xref target="header.accept-encoding"/>) and
     2395   Content-Encoding (<xref target="header.content-encoding"/>) header fields. Although the value
     2396   describes the content-coding, what is more important is that it
     2397   indicates what decoding mechanism will be required to remove the
     2398   encoding.
     2399</t>
     2400<t>
     2401   compress<iref item="compress (Coding Format)"/><iref item="Coding Format" subitem="compress"/>
     2402  <list>
     2403    <t>
     2404      See &compress-coding;.
     2405    </t>
     2406  </list>
     2407</t>
     2408<t>
     2409   deflate<iref item="deflate (Coding Format)"/><iref item="Coding Format" subitem="deflate"/>
     2410  <list>
     2411    <t>
     2412      See &deflate-coding;.
     2413    </t>
     2414  </list>
     2415</t>
     2416<t>
     2417   gzip<iref item="gzip (Coding Format)"/><iref item="Coding Format" subitem="gzip"/>
     2418  <list>
     2419    <t>
     2420      See &gzip-coding;.
     2421    </t>
     2422  </list>
     2423</t>
     2424
     2425<section title="Content Coding Registry" anchor="content.coding.registry">
     2426<t>
     2427   The HTTP Content Coding Registry defines the name space for the content
     2428   coding names.
     2429</t>
     2430<t>
     2431   Registrations &MUST; include the following fields:
     2432   <list style="symbols">
     2433     <t>Name</t>
     2434     <t>Description</t>
     2435     <t>Pointer to specification text</t>
     2436   </list>
     2437</t>
     2438<t>
     2439   Names of content codings &MUST-NOT; overlap with names of transfer codings
     2440   (&transfer-codings;), unless the encoding transformation is identical (as
     2441   is the case for the compression codings defined in
     2442   &compression-codings;).
     2443</t>
     2444<t>
     2445   Values to be added to this name space require IETF Review
     2446   (see <xref target="RFC5226" x:fmt="of" x:sec="4.1"/>), and &MUST;
     2447   conform to the purpose of content coding defined in this section.
     2448</t>
     2449<t>
     2450   The registry itself is maintained at
     2451   <eref target="http://www.iana.org/assignments/http-parameters"/>.
     2452</t>
     2453</section>
     2454
     2455</section>
     2456
     2457<section title="Media Types" anchor="media.types">
     2458  <x:anchor-alias value="media-type"/>
     2459  <x:anchor-alias value="type"/>
     2460  <x:anchor-alias value="subtype"/>
     2461<t>
     2462   HTTP uses Internet Media Types <xref target="RFC2046"/> in the Content-Type (<xref target="header.content-type"/>)
     2463   and Accept (<xref target="header.accept"/>) header fields in order to provide
     2464   open and extensible data typing and type negotiation.
     2465</t>
     2466<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="media-type"/><iref primary="true" item="Grammar" subitem="type"/><iref primary="true" item="Grammar" subitem="subtype"/>
     2467  <x:ref>media-type</x:ref> = <x:ref>type</x:ref> "/" <x:ref>subtype</x:ref> *( <x:ref>OWS</x:ref> ";" <x:ref>OWS</x:ref> <x:ref>parameter</x:ref> )
     2468  <x:ref>type</x:ref>       = <x:ref>token</x:ref>
     2469  <x:ref>subtype</x:ref>    = <x:ref>token</x:ref>
     2470</artwork></figure>
     2471<t anchor="rule.parameter">
     2472  <x:anchor-alias value="attribute"/>
     2473  <x:anchor-alias value="parameter"/>
     2474  <x:anchor-alias value="value"/>
     2475   The type/subtype &MAY; be followed by parameters in the form of
     2476   attribute/value pairs.
     2477</t>
     2478<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="parameter"/><iref primary="true" item="Grammar" subitem="attribute"/><iref primary="true" item="Grammar" subitem="value"/>
     2479  <x:ref>parameter</x:ref>      = <x:ref>attribute</x:ref> "=" <x:ref>value</x:ref>
     2480  <x:ref>attribute</x:ref>      = <x:ref>token</x:ref>
     2481  <x:ref>value</x:ref>          = <x:ref>word</x:ref>
     2482</artwork></figure>
     2483<t>
     2484   The type, subtype, and parameter attribute names are case-insensitive.
     2485   Parameter values might or might not be case-sensitive, depending on the
     2486   semantics of the parameter name.  The presence or absence of a parameter might
     2487   be significant to the processing of a media-type, depending on its
     2488   definition within the media type registry.
     2489</t>
     2490<t>
     2491   A parameter value that matches the <x:ref>token</x:ref> production can be
     2492   transmitted as either a token or within a quoted-string. The quoted and
     2493   unquoted values are equivalent.
     2494</t>
     2495<t>
     2496   Note that some older HTTP applications do not recognize media type
     2497   parameters. When sending data to older HTTP applications,
     2498   implementations &SHOULD; only use media type parameters when they are
     2499   required by that type/subtype definition.
     2500</t>
     2501<t>
     2502   Media-type values are registered with the Internet Assigned Number
     2503   Authority (IANA). The media type registration process is
     2504   outlined in <xref target="RFC4288"/>. Use of non-registered media types is
     2505   discouraged.
     2506</t>
     2507
     2508<section title="Canonicalization and Text Defaults" anchor="canonicalization.and.text.defaults">
     2509<t>
     2510   Internet media types are registered with a canonical form. A
     2511   representation transferred via HTTP messages &MUST; be in the
     2512   appropriate canonical form prior to its transmission except for
     2513   "text" types, as defined in the next paragraph.
     2514</t>
     2515<t>
     2516   When in canonical form, media subtypes of the "text" type use CRLF as
     2517   the text line break. HTTP relaxes this requirement and allows the
     2518   transport of text media with plain CR or LF alone representing a line
     2519   break when it is done consistently for an entire representation. HTTP
     2520   applications &MUST; accept CRLF, bare CR, and bare LF as indicating
     2521   a line break in text media received via HTTP. In
     2522   addition, if the text is in a character encoding that does not
     2523   use octets 13 and 10 for CR and LF respectively, as is the case for
     2524   some multi-byte character encodings, HTTP allows the use of whatever octet
     2525   sequences are defined by that character encoding to represent the
     2526   equivalent of CR and LF for line breaks. This flexibility regarding
     2527   line breaks applies only to text media in the payload body; a bare CR
     2528   or LF &MUST-NOT; be substituted for CRLF within any of the HTTP control
     2529   structures (such as header fields and multipart boundaries).
     2530</t>
     2531<t>
     2532   If a representation is encoded with a content-coding, the underlying
     2533   data &MUST; be in a form defined above prior to being encoded.
     2534</t>
     2535</section>
     2536
     2537<section title="Multipart Types" anchor="multipart.types">
     2538<t>
     2539   MIME provides for a number of "multipart" types &mdash; encapsulations of
     2540   one or more representations within a single message body. All multipart
     2541   types share a common syntax, as defined in <xref target="RFC2046" x:sec="5.1.1" x:fmt="of"/>,
     2542   and &MUST; include a boundary parameter as part of the media type
     2543   value. The message body is itself a protocol element and &MUST;
     2544   therefore use only CRLF to represent line breaks between body-parts.
     2545</t>
     2546<t>
     2547   In general, HTTP treats a multipart message body no differently than
     2548   any other media type: strictly as payload.  HTTP does not use the
     2549   multipart boundary as an indicator of message body length.
     2550   <!-- jre: re-insert removed text pointing to caching? -->
     2551   In all other respects, an HTTP user agent &SHOULD; follow the same or similar
     2552   behavior as a MIME user agent would upon receipt of a multipart type.
     2553   The MIME header fields within each body-part of a multipart message body
     2554   do not have any significance to HTTP beyond that defined by
     2555   their MIME semantics.
     2556</t>
     2557<t>
     2558   If an application receives an unrecognized multipart subtype, the
     2559   application &MUST; treat it as being equivalent to "multipart/mixed".
     2560</t>
     2561<x:note>
     2562  <t>
     2563    <x:h>Note:</x:h> The "multipart/form-data" type has been specifically defined
     2564    for carrying form data suitable for processing via the POST
     2565    request method, as described in <xref target="RFC2388"/>.
     2566  </t>
     2567</x:note>
     2568</section>
     2569</section>
     2570
     2571<section title="Language Tags" anchor="language.tags">
     2572  <x:anchor-alias value="language-tag"/>
     2573<t>
     2574   A language tag, as defined in <xref target="RFC5646"/>, identifies a
     2575   natural language spoken, written, or otherwise conveyed by human beings for
     2576   communication of information to other human beings. Computer languages are
     2577   explicitly excluded. HTTP uses language tags within the Accept-Language and
     2578   Content-Language fields.
     2579</t>
     2580<t>
     2581   In summary, a language tag is composed of one or more parts: A primary
     2582   language subtag followed by a possibly empty series of subtags:
     2583</t>
     2584<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="language-tag"/>
     2585  <x:ref>language-tag</x:ref> = &lt;Language-Tag, defined in <xref target="RFC5646" x:sec="2.1"/>&gt;
     2586</artwork></figure>
     2587<t>
     2588   White space is not allowed within the tag and all tags are case-insensitive.
     2589   The name space of language subtags is administered by the IANA (see
     2590   <eref target="http://www.iana.org/assignments/language-subtag-registry"/>).
     2591</t>
     2592<figure>
     2593  <preamble>Example tags include:</preamble>
     2594<artwork type="example">
     2595  en, en-US, es-419, az-Arab, x-pig-latin, man-Nkoo-GN
     2596</artwork>
     2597</figure>
     2598<t>
     2599   See <xref target="RFC5646"/> for further information.
    23422600</t>
    23432601</section>
     
    49315189
    49325190<section title="THE TEXT FORMERLY KNOWN AS PART3">
    4933 <section title="Protocol Parameters" anchor="protocol.parameters">
    4934 
    4935 <section title="Character Encodings (charset)" anchor="character.sets">
    4936 <t>
    4937    HTTP uses charset names to indicate the character encoding of a
    4938    textual representation.
    4939 </t>
    4940 <t anchor="rule.charset">
    4941   <x:anchor-alias value="charset"/>
    4942    A character encoding is identified by a case-insensitive token. The
    4943    complete set of tokens is defined by the IANA Character Set registry
    4944    (<eref target="http://www.iana.org/assignments/character-sets"/>).
    4945 </t>
    4946 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="charset"/>
    4947   <x:ref>charset</x:ref> = <x:ref>token</x:ref>
    4948 </artwork></figure>
    4949 <t>
    4950    Although HTTP allows an arbitrary token to be used as a charset
    4951    value, any token that has a predefined value within the IANA
    4952    Character Set registry &MUST; represent the character encoding defined
    4953    by that registry. Applications &SHOULD; limit their use of character
    4954    encodings to those defined within the IANA registry.
    4955 </t>
    4956 <t>
    4957    HTTP uses charset in two contexts: within an Accept-Charset request
    4958    header field (in which the charset value is an unquoted token) and as the
    4959    value of a parameter in a Content-Type header field (within a request or
    4960    response), in which case the parameter value of the charset parameter
    4961    can be quoted.
    4962 </t>
    4963 <t>
    4964    Implementors need to be aware of IETF character set requirements <xref target="RFC3629"/>
    4965    <xref target="RFC2277"/>.
    4966 </t>
    4967 </section>
    4968 
    4969 <section title="Content Codings" anchor="content.codings">
    4970   <x:anchor-alias value="content-coding"/>
    4971 <t>
    4972    Content coding values indicate an encoding transformation that has
    4973    been or can be applied to a representation. Content codings are primarily
    4974    used to allow a representation to be compressed or otherwise usefully
    4975    transformed without losing the identity of its underlying media type
    4976    and without loss of information. Frequently, the representation is stored in
    4977    coded form, transmitted directly, and only decoded by the recipient.
    4978 </t>
    4979 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="content-coding"/>
    4980   <x:ref>content-coding</x:ref>   = <x:ref>token</x:ref>
    4981 </artwork></figure>
    4982 <t>
    4983    All content-coding values are case-insensitive. HTTP/1.1 uses
    4984    content-coding values in the Accept-Encoding (<xref target="header.accept-encoding"/>) and
    4985    Content-Encoding (<xref target="header.content-encoding"/>) header fields. Although the value
    4986    describes the content-coding, what is more important is that it
    4987    indicates what decoding mechanism will be required to remove the
    4988    encoding.
    4989 </t>
    4990 <t>
    4991    compress<iref item="compress (Coding Format)"/><iref item="Coding Format" subitem="compress"/>
    4992   <list>
    4993     <t>
    4994       See &compress-coding;.
    4995     </t>
    4996   </list>
    4997 </t>
    4998 <t>
    4999    deflate<iref item="deflate (Coding Format)"/><iref item="Coding Format" subitem="deflate"/>
    5000   <list>
    5001     <t>
    5002       See &deflate-coding;.
    5003     </t>
    5004   </list>
    5005 </t>
    5006 <t>
    5007    gzip<iref item="gzip (Coding Format)"/><iref item="Coding Format" subitem="gzip"/>
    5008   <list>
    5009     <t>
    5010       See &gzip-coding;.
    5011     </t>
    5012   </list>
    5013 </t>
    5014 
    5015 <section title="Content Coding Registry" anchor="content.coding.registry">
    5016 <t>
    5017    The HTTP Content Coding Registry defines the name space for the content
    5018    coding names.
    5019 </t>
    5020 <t>
    5021    Registrations &MUST; include the following fields:
    5022    <list style="symbols">
    5023      <t>Name</t>
    5024      <t>Description</t>
    5025      <t>Pointer to specification text</t>
    5026    </list>
    5027 </t>
    5028 <t>
    5029    Names of content codings &MUST-NOT; overlap with names of transfer codings
    5030    (&transfer-codings;), unless the encoding transformation is identical (as
    5031    is the case for the compression codings defined in
    5032    &compression-codings;).
    5033 </t>
    5034 <t>
    5035    Values to be added to this name space require IETF Review
    5036    (see <xref target="RFC5226" x:fmt="of" x:sec="4.1"/>), and &MUST;
    5037    conform to the purpose of content coding defined in this section.
    5038 </t>
    5039 <t>
    5040    The registry itself is maintained at
    5041    <eref target="http://www.iana.org/assignments/http-parameters"/>.
    5042 </t>
    5043 </section>
    5044 
    5045 </section>
    5046 
    5047 <section title="Media Types" anchor="media.types">
    5048   <x:anchor-alias value="media-type"/>
    5049   <x:anchor-alias value="type"/>
    5050   <x:anchor-alias value="subtype"/>
    5051 <t>
    5052    HTTP uses Internet Media Types <xref target="RFC2046"/> in the Content-Type (<xref target="header.content-type"/>)
    5053    and Accept (<xref target="header.accept"/>) header fields in order to provide
    5054    open and extensible data typing and type negotiation.
    5055 </t>
    5056 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="media-type"/><iref primary="true" item="Grammar" subitem="type"/><iref primary="true" item="Grammar" subitem="subtype"/>
    5057   <x:ref>media-type</x:ref> = <x:ref>type</x:ref> "/" <x:ref>subtype</x:ref> *( <x:ref>OWS</x:ref> ";" <x:ref>OWS</x:ref> <x:ref>parameter</x:ref> )
    5058   <x:ref>type</x:ref>       = <x:ref>token</x:ref>
    5059   <x:ref>subtype</x:ref>    = <x:ref>token</x:ref>
    5060 </artwork></figure>
    5061 <t anchor="rule.parameter">
    5062   <x:anchor-alias value="attribute"/>
    5063   <x:anchor-alias value="parameter"/>
    5064   <x:anchor-alias value="value"/>
    5065    The type/subtype &MAY; be followed by parameters in the form of
    5066    attribute/value pairs.
    5067 </t>
    5068 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="parameter"/><iref primary="true" item="Grammar" subitem="attribute"/><iref primary="true" item="Grammar" subitem="value"/>
    5069   <x:ref>parameter</x:ref>      = <x:ref>attribute</x:ref> "=" <x:ref>value</x:ref>
    5070   <x:ref>attribute</x:ref>      = <x:ref>token</x:ref>
    5071   <x:ref>value</x:ref>          = <x:ref>word</x:ref>
    5072 </artwork></figure>
    5073 <t>
    5074    The type, subtype, and parameter attribute names are case-insensitive.
    5075    Parameter values might or might not be case-sensitive, depending on the
    5076    semantics of the parameter name.  The presence or absence of a parameter might
    5077    be significant to the processing of a media-type, depending on its
    5078    definition within the media type registry.
    5079 </t>
    5080 <t>
    5081    A parameter value that matches the <x:ref>token</x:ref> production can be
    5082    transmitted as either a token or within a quoted-string. The quoted and
    5083    unquoted values are equivalent.
    5084 </t>
    5085 <t>
    5086    Note that some older HTTP applications do not recognize media type
    5087    parameters. When sending data to older HTTP applications,
    5088    implementations &SHOULD; only use media type parameters when they are
    5089    required by that type/subtype definition.
    5090 </t>
    5091 <t>
    5092    Media-type values are registered with the Internet Assigned Number
    5093    Authority (IANA). The media type registration process is
    5094    outlined in <xref target="RFC4288"/>. Use of non-registered media types is
    5095    discouraged.
    5096 </t>
    5097 
    5098 <section title="Canonicalization and Text Defaults" anchor="canonicalization.and.text.defaults">
    5099 <t>
    5100    Internet media types are registered with a canonical form. A
    5101    representation transferred via HTTP messages &MUST; be in the
    5102    appropriate canonical form prior to its transmission except for
    5103    "text" types, as defined in the next paragraph.
    5104 </t>
    5105 <t>
    5106    When in canonical form, media subtypes of the "text" type use CRLF as
    5107    the text line break. HTTP relaxes this requirement and allows the
    5108    transport of text media with plain CR or LF alone representing a line
    5109    break when it is done consistently for an entire representation. HTTP
    5110    applications &MUST; accept CRLF, bare CR, and bare LF as indicating
    5111    a line break in text media received via HTTP. In
    5112    addition, if the text is in a character encoding that does not
    5113    use octets 13 and 10 for CR and LF respectively, as is the case for
    5114    some multi-byte character encodings, HTTP allows the use of whatever octet
    5115    sequences are defined by that character encoding to represent the
    5116    equivalent of CR and LF for line breaks. This flexibility regarding
    5117    line breaks applies only to text media in the payload body; a bare CR
    5118    or LF &MUST-NOT; be substituted for CRLF within any of the HTTP control
    5119    structures (such as header fields and multipart boundaries).
    5120 </t>
    5121 <t>
    5122    If a representation is encoded with a content-coding, the underlying
    5123    data &MUST; be in a form defined above prior to being encoded.
    5124 </t>
    5125 </section>
    5126 
    5127 <section title="Multipart Types" anchor="multipart.types">
    5128 <t>
    5129    MIME provides for a number of "multipart" types &mdash; encapsulations of
    5130    one or more representations within a single message body. All multipart
    5131    types share a common syntax, as defined in <xref target="RFC2046" x:sec="5.1.1" x:fmt="of"/>,
    5132    and &MUST; include a boundary parameter as part of the media type
    5133    value. The message body is itself a protocol element and &MUST;
    5134    therefore use only CRLF to represent line breaks between body-parts.
    5135 </t>
    5136 <t>
    5137    In general, HTTP treats a multipart message body no differently than
    5138    any other media type: strictly as payload.  HTTP does not use the
    5139    multipart boundary as an indicator of message body length.
    5140    <!-- jre: re-insert removed text pointing to caching? -->
    5141    In all other respects, an HTTP user agent &SHOULD; follow the same or similar
    5142    behavior as a MIME user agent would upon receipt of a multipart type.
    5143    The MIME header fields within each body-part of a multipart message body
    5144    do not have any significance to HTTP beyond that defined by
    5145    their MIME semantics.
    5146 </t>
    5147 <t>
    5148    If an application receives an unrecognized multipart subtype, the
    5149    application &MUST; treat it as being equivalent to "multipart/mixed".
    5150 </t>
    5151 <x:note>
    5152   <t>
    5153     <x:h>Note:</x:h> The "multipart/form-data" type has been specifically defined
    5154     for carrying form data suitable for processing via the POST
    5155     request method, as described in <xref target="RFC2388"/>.
    5156   </t>
    5157 </x:note>
    5158 </section>
    5159 </section>
    5160 
    5161 <section title="Language Tags" anchor="language.tags">
    5162   <x:anchor-alias value="language-tag"/>
    5163 <t>
    5164    A language tag, as defined in <xref target="RFC5646"/>, identifies a
    5165    natural language spoken, written, or otherwise conveyed by human beings for
    5166    communication of information to other human beings. Computer languages are
    5167    explicitly excluded. HTTP uses language tags within the Accept-Language and
    5168    Content-Language fields.
    5169 </t>
    5170 <t>
    5171    In summary, a language tag is composed of one or more parts: A primary
    5172    language subtag followed by a possibly empty series of subtags:
    5173 </t>
    5174 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="language-tag"/>
    5175   <x:ref>language-tag</x:ref> = &lt;Language-Tag, defined in <xref target="RFC5646" x:sec="2.1"/>&gt;
    5176 </artwork></figure>
    5177 <t>
    5178    White space is not allowed within the tag and all tags are case-insensitive.
    5179    The name space of language subtags is administered by the IANA (see
    5180    <eref target="http://www.iana.org/assignments/language-subtag-registry"/>).
    5181 </t>
    5182 <figure>
    5183   <preamble>Example tags include:</preamble>
    5184 <artwork type="example">
    5185   en, en-US, es-419, az-Arab, x-pig-latin, man-Nkoo-GN
    5186 </artwork>
    5187 </figure>
    5188 <t>
    5189    See <xref target="RFC5646"/> for further information.
    5190 </t>
    5191 </section>
    5192 </section>
    51935191
    51945192<section title="Payload" anchor="payload">
  • draft-ietf-httpbis/latest/p3-payload.html

    r1643 r1644  
    481481      </ul>
    482482      <h1 id="rfc.section.1" class="np"><a href="#rfc.section.1">1.</a>&nbsp;<a id="introduction" href="#introduction">Introduction</a></h1>
    483       <p id="rfc.section.1.p.1">This part is now obsolete. Please see HTTPbis, Part 2.</p>
     483      <p id="rfc.section.1.p.1">This part is now obsolete. Please see HTTPbis, Part 2. See also &lt;<a href="http://trac.tools.ietf.org/wg/httpbis/trac/ticket/351">http://trac.tools.ietf.org/wg/httpbis/trac/ticket/351</a>&gt;.
     484      </p>
    484485      <div class="avoidbreak">
    485486         <h1 id="rfc.authors"><a href="#rfc.authors">Authors' Addresses</a></h1>
  • draft-ietf-httpbis/latest/p3-payload.xml

    r1643 r1644  
    9696<t>
    9797  This part is now obsolete. Please see HTTPbis, Part 2.
     98  See also <eref target="http://trac.tools.ietf.org/wg/httpbis/trac/ticket/351"/>.
    9899</t>
    99100</section>
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