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Timestamp:
May 10, 2009, 3:42:16 AM (10 years ago)
Author:
julian.reschke@…
Message:

re-organize section on HTTP-date including ABNF, refer to RFC 5322 for semantics (related to #163)

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1 edited

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  • draft-ietf-httpbis/latest/p1-messaging.html

    r578 r580  
    471471         <tr>
    472472            <td class="header left"></td>
    473             <td class="header right">May 8, 2009</td>
     473            <td class="header right">May 10, 2009</td>
    474474         </tr>
    475475      </table>
    … …  
    545545         <li class="tocline0">3.&nbsp;&nbsp;&nbsp;<a href="#protocol.parameters">Protocol Parameters</a><ul class="toc">
    546546               <li class="tocline1">3.1&nbsp;&nbsp;&nbsp;<a href="#http.version">HTTP Version</a></li>
    547                <li class="tocline1">3.2&nbsp;&nbsp;&nbsp;<a href="#date.time.formats">Date/Time Formats</a><ul class="toc">
    548                      <li class="tocline1">3.2.1&nbsp;&nbsp;&nbsp;<a href="#full.date">Full Date</a></li>
    549                   </ul>
    550                </li>
     547               <li class="tocline1">3.2&nbsp;&nbsp;&nbsp;<a href="#date.time.formats.full.date">Date/Time Formats: Full Date</a></li>
    551548               <li class="tocline1">3.3&nbsp;&nbsp;&nbsp;<a href="#transfer.codings">Transfer Codings</a><ul class="toc">
    552549                     <li class="tocline1">3.3.1&nbsp;&nbsp;&nbsp;<a href="#chunked.transfer.encoding">Chunked Transfer Coding</a></li>
    … …  
    970967         </p>
    971968      </div>
    972       <h2 id="rfc.section.3.2"><a href="#rfc.section.3.2">3.2</a>&nbsp;<a id="date.time.formats" href="#date.time.formats">Date/Time Formats</a></h2>
    973       <h3 id="rfc.section.3.2.1"><a href="#rfc.section.3.2.1">3.2.1</a>&nbsp;<a id="full.date" href="#full.date">Full Date</a></h3>
    974       <p id="rfc.section.3.2.1.p.1">HTTP applications have historically allowed three different formats for the representation of date/time stamps:</p>
     969      <h2 id="rfc.section.3.2"><a href="#rfc.section.3.2">3.2</a>&nbsp;<a id="date.time.formats.full.date" href="#date.time.formats.full.date">Date/Time Formats: Full Date</a></h2>
     970      <p id="rfc.section.3.2.p.1">HTTP applications have historically allowed three different formats for the representation of date/time stamps:</p>
    975971      <div id="rfc.figure.u.19"></div><pre class="text">  Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 1123
    976972  Sunday, 06-Nov-94 08:49:37 GMT ; obsolete RFC 850 format
    977973  Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
    978 </pre><p id="rfc.section.3.2.1.p.3">The first format is preferred as an Internet standard and represents a fixed-length subset of that defined by <a href="#RFC1123" id="rfc.xref.RFC1123.1"><cite title="Requirements for Internet Hosts - Application and Support">[RFC1123]</cite></a>. The other formats are described here only for compatibility with obsolete implementations. HTTP/1.1 clients and servers
     974</pre><p id="rfc.section.3.2.p.3">The first format is preferred as an Internet standard and represents a fixed-length subset of that defined by <a href="#RFC1123" id="rfc.xref.RFC1123.1"><cite title="Requirements for Internet Hosts - Application and Support">[RFC1123]</cite></a>. The other formats are described here only for compatibility with obsolete implementations. HTTP/1.1 clients and servers
    979975         that parse the date value <em class="bcp14">MUST</em> accept all three formats (for compatibility with HTTP/1.0), though they <em class="bcp14">MUST</em> only generate the RFC 1123 format for representing HTTP-date values in header fields. See <a href="#tolerant.applications" title="Tolerant Applications">Appendix&nbsp;A</a> for further information.
    980976      </p>
    981       <div class="note">
    982          <p> <b>Note:</b> Recipients of date values are encouraged to be robust in accepting date values that may have been sent by non-HTTP applications,
    983             as is sometimes the case when retrieving or posting messages via proxies/gateways to SMTP or NNTP.
    984          </p>
    985       </div>
    986       <p id="rfc.section.3.2.1.p.5">All HTTP date/time stamps <em class="bcp14">MUST</em> be represented in Greenwich Mean Time (GMT), without exception. For the purposes of HTTP, GMT is exactly equal to UTC (Coordinated
     977      <p id="rfc.section.3.2.p.4">All HTTP date/time stamps <em class="bcp14">MUST</em> be represented in Greenwich Mean Time (GMT), without exception. For the purposes of HTTP, GMT is exactly equal to UTC (Coordinated
    987978         Universal Time). This is indicated in the first two formats by the inclusion of "GMT" as the three-letter abbreviation for
    988979         time zone, and <em class="bcp14">MUST</em> be assumed when reading the asctime format. HTTP-date is case sensitive and <em class="bcp14">MUST NOT</em> include additional whitespace beyond that specifically included as SP in the grammar.
    989980      </p>
    990       <div id="rfc.figure.u.20"></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><span id="rfc.iref.g.38"></span><span id="rfc.iref.g.39"></span><span id="rfc.iref.g.40"></span><span id="rfc.iref.g.41"></span><span id="rfc.iref.g.42"></span><span id="rfc.iref.g.43"></span><span id="rfc.iref.g.44"></span>  <a href="#full.date" class="smpl">HTTP-date</a>    = <a href="#full.date" class="smpl">rfc1123-date</a> / <a href="#full.date" class="smpl">obsolete-date</a>
    991   <a href="#full.date" class="smpl">obsolete-date</a> = <a href="#full.date" class="smpl">rfc850-date</a> / <a href="#full.date" class="smpl">asctime-date</a>
    992   <a href="#full.date" class="smpl">rfc1123-date</a> = <a href="#full.date" class="smpl">wkday</a> "," <a href="#core.rules" class="smpl">SP</a> date1 <a href="#core.rules" class="smpl">SP</a> time <a href="#core.rules" class="smpl">SP</a> GMT
    993   <a href="#full.date" class="smpl">rfc850-date</a>  = <a href="#full.date" class="smpl">weekday</a> "," <a href="#core.rules" class="smpl">SP</a> date2 <a href="#core.rules" class="smpl">SP</a> time <a href="#core.rules" class="smpl">SP</a> GMT
    994   <a href="#full.date" class="smpl">asctime-date</a> = <a href="#full.date" class="smpl">wkday</a> <a href="#core.rules" class="smpl">SP</a> <a href="#full.date" class="smpl">date3</a> <a href="#core.rules" class="smpl">SP</a> <a href="#full.date" class="smpl">time</a> <a href="#core.rules" class="smpl">SP</a> 4<a href="#core.rules" class="smpl">DIGIT</a>
    995   <a href="#full.date" class="smpl">date1</a>        = 2<a href="#core.rules" class="smpl">DIGIT</a> <a href="#core.rules" class="smpl">SP</a> <a href="#full.date" class="smpl">month</a> <a href="#core.rules" class="smpl">SP</a> 4<a href="#core.rules" class="smpl">DIGIT</a>
    996                  ; day month year (e.g., 02 Jun 1982)
    997   <a href="#full.date" class="smpl">date2</a>        = 2<a href="#core.rules" class="smpl">DIGIT</a> "-" <a href="#full.date" class="smpl">month</a> "-" 2<a href="#core.rules" class="smpl">DIGIT</a>
    998                  ; day-month-year (e.g., 02-Jun-82)
    999   <a href="#full.date" class="smpl">date3</a>        = <a href="#full.date" class="smpl">month</a> <a href="#core.rules" class="smpl">SP</a> ( 2<a href="#core.rules" class="smpl">DIGIT</a> / ( <a href="#core.rules" class="smpl">SP</a> 1<a href="#core.rules" class="smpl">DIGIT</a> ))
    1000                  ; month day (e.g., Jun  2)
    1001   <a href="#full.date" class="smpl">time</a>         = 2<a href="#core.rules" class="smpl">DIGIT</a> ":" 2<a href="#core.rules" class="smpl">DIGIT</a> ":" 2<a href="#core.rules" class="smpl">DIGIT</a>
    1002                  ; 00:00:00 - 23:59:59
    1003   <a href="#full.date" class="smpl">wkday</a>        = s-Mon / s-Tue / s-Wed
     981      <div id="rfc.figure.u.20"></div><pre class="inline"><span id="rfc.iref.g.33"></span>  <a href="#date.time.formats.full.date" class="smpl">HTTP-date</a>    = <a href="#preferred.date.format" class="smpl">rfc1123-date</a> / <a href="#obsolete.date.formats" class="smpl">obs-date</a>
     982</pre><div id="preferred.date.format">
     983         <p id="rfc.section.3.2.p.6">                    Preferred format:</p>
     984      </div>
     985      <div id="rfc.figure.u.21"></div><pre class="inline"><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><span id="rfc.iref.g.38"></span><span id="rfc.iref.g.39"></span><span id="rfc.iref.g.40"></span><span id="rfc.iref.g.41"></span><span id="rfc.iref.g.42"></span><span id="rfc.iref.g.43"></span><span id="rfc.iref.g.44"></span><span id="rfc.iref.g.45"></span>  <a href="#preferred.date.format" class="smpl">rfc1123-date</a> = <a href="#preferred.date.format" class="smpl">day-name</a> "," <a href="#core.rules" class="smpl">SP</a> date1 <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">time-of-day</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">GMT</a>
     986
     987  <a href="#preferred.date.format" class="smpl">day-name</a>     = s-Mon / s-Tue / s-Wed
    1004988               / s-Thu / s-Fri / s-Sat / s-Sun
    1005   <a href="#full.date" class="smpl">weekday</a>      = l-Mon / l-Tue / l-Wed
    1006                / l-Thu / l-Fri / l-Sat / l-Sun
    1007   <a href="#full.date" class="smpl">month</a>        = s-Jan / s-Feb / s-Mar / s-Apr
    1008                / s-May / s-Jun / s-Jul / s-Aug
    1009                / s-Sep / s-Oct / s-Nov / s-Dec
    1010989               
    1011   GMT   = %x47.4D.54 ; "GMT", case-sensitive
    1012 
    1013990  s-Mon = %x4D.6F.6E ; "Mon", case-sensitive
    1014991  s-Tue = %x54.75.65 ; "Tue", case-sensitive
    … …  
    1019996  s-Sun = %x53.75.6E ; "Sun", case-sensitive
    1020997
    1021   l-Mon = %x4D.6F.6E.64.61.79          ; "Monday", case-sensitive
    1022   l-Tue = %x54.75.65.73.64.61.79       ; "Tuesday", case-sensitive
    1023   l-Wed = %x57.65.64.6E.65.73.64.61.79 ; "Wednesday", case-sensitive
    1024   l-Thu = %x54.68.75.72.73.64.61.79    ; "Thursday", case-sensitive
    1025   l-Fri = %x46.72.69.64.61.79          ; "Friday", case-sensitive
    1026   l-Sat = %x53.61.74.75.72.64.61.79    ; "Saturday", case-sensitive
    1027   l-Sun = %x53.75.6E.64.61.79          ; "Sunday", case-sensitive
     998  <a href="#obsolete.date.formats" class="smpl">date1</a>        = <a href="#preferred.date.format" class="smpl">day</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">month</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">year</a>
     999               ; e.g., 02 Jun 1982
     1000
     1001  <a href="#preferred.date.format" class="smpl">day</a>          = 2<a href="#core.rules" class="smpl">DIGIT</a>
     1002  <a href="#preferred.date.format" class="smpl">month</a>        = s-Jan / s-Feb / s-Mar / s-Apr
     1003               / s-May / s-Jun / s-Jul / s-Aug
     1004               / s-Sep / s-Oct / s-Nov / s-Dec
     1005  <a href="#preferred.date.format" class="smpl">year</a>         = 4<a href="#core.rules" class="smpl">DIGIT</a>
    10281006
    10291007  s-Jan = %x4A.61.6E ; "Jan", case-sensitive
    … …  
    10391017  s-Nov = %x4E.6F.76 ; "Nov", case-sensitive
    10401018  s-Dec = %x44.65.63 ; "Dec", case-sensitive
    1041 </pre><p id="rfc.section.3.2.1.p.7"> <b>Note:</b> HTTP requirements for the date/time stamp format apply only to their usage within the protocol stream. Clients and servers
    1042          are not required to use these formats for user presentation, request logging, etc.
    1043       </p>
     1019
     1020  <a href="#preferred.date.format" class="smpl">GMT</a>   = %x47.4D.54 ; "GMT", case-sensitive
     1021
     1022  <a href="#preferred.date.format" class="smpl">time-of-day</a>  = <a href="#preferred.date.format" class="smpl">hour</a> ":" <a href="#preferred.date.format" class="smpl">minute</a> ":" <a href="#preferred.date.format" class="smpl">second</a>
     1023                 ; 00:00:00 - 23:59:59
     1024                 
     1025  <a href="#preferred.date.format" class="smpl">hour</a>         = 2<a href="#core.rules" class="smpl">DIGIT</a>               
     1026  <a href="#preferred.date.format" class="smpl">minute</a>       = 2<a href="#core.rules" class="smpl">DIGIT</a>               
     1027  <a href="#preferred.date.format" class="smpl">second</a>       = 2<a href="#core.rules" class="smpl">DIGIT</a>               
     1028</pre><p id="rfc.section.3.2.p.8">The semantics of <a href="#preferred.date.format" class="smpl">day-name</a>, <a href="#preferred.date.format" class="smpl">day</a>, <a href="#preferred.date.format" class="smpl">month</a>, <a href="#preferred.date.format" class="smpl">year</a>, and <a href="#preferred.date.format" class="smpl">time-of-day</a> are the same as those defined in the RFC 5322 constructs with the corresponding name (<a href="#RFC5322" id="rfc.xref.RFC5322.2"><cite title="Internet Message Format">[RFC5322]</cite></a>, <a href="http://tools.ietf.org/html/rfc5322#section-3.3">Section 3.3</a>).
     1029      </p>
     1030      <div id="obsolete.date.formats">
     1031         <p id="rfc.section.3.2.p.9">                Obsolete formats:</p>
     1032      </div>
     1033      <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.46"></span>  <a href="#obsolete.date.formats" class="smpl">obs-date</a>     = <a href="#obsolete.date.formats" class="smpl">rfc850-date</a> / <a href="#obsolete.date.formats" class="smpl">asctime-date</a>
     1034</pre><div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.47"></span>  <a href="#obsolete.date.formats" class="smpl">rfc850-date</a>  = <a href="#obsolete.date.formats" class="smpl">day-name-l</a> "," <a href="#core.rules" class="smpl">SP</a> <a href="#obsolete.date.formats" class="smpl">date2</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">time-of-day</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">GMT</a>
     1035  <a href="#obsolete.date.formats" class="smpl">date2</a>        = <a href="#preferred.date.format" class="smpl">day</a> "-" <a href="#preferred.date.format" class="smpl">month</a> "-" 2<a href="#core.rules" class="smpl">DIGIT</a>
     1036                 ; day-month-year (e.g., 02-Jun-82)
     1037
     1038  <a href="#obsolete.date.formats" class="smpl">day-name-l</a>   = l-Mon / l-Tue / l-Wed
     1039               / l-Thu / l-Fri / l-Sat / l-Sun
     1040
     1041  l-Mon = %x4D.6F.6E.64.61.79          ; "Monday", case-sensitive
     1042  l-Tue = %x54.75.65.73.64.61.79       ; "Tuesday", case-sensitive
     1043  l-Wed = %x57.65.64.6E.65.73.64.61.79 ; "Wednesday", case-sensitive
     1044  l-Thu = %x54.68.75.72.73.64.61.79    ; "Thursday", case-sensitive
     1045  l-Fri = %x46.72.69.64.61.79          ; "Friday", case-sensitive
     1046  l-Sat = %x53.61.74.75.72.64.61.79    ; "Saturday", case-sensitive
     1047  l-Sun = %x53.75.6E.64.61.79          ; "Sunday", case-sensitive
     1048</pre><div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.48"></span>  <a href="#obsolete.date.formats" class="smpl">asctime-date</a> = <a href="#preferred.date.format" class="smpl">day-name</a> <a href="#core.rules" class="smpl">SP</a> <a href="#obsolete.date.formats" class="smpl">date3</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">time-of-day</a> <a href="#core.rules" class="smpl">SP</a> <a href="#preferred.date.format" class="smpl">year</a>
     1049  <a href="#obsolete.date.formats" class="smpl">date3</a>        = <a href="#preferred.date.format" class="smpl">month</a> <a href="#core.rules" class="smpl">SP</a> ( 2<a href="#core.rules" class="smpl">DIGIT</a> / ( <a href="#core.rules" class="smpl">SP</a> 1<a href="#core.rules" class="smpl">DIGIT</a> ))
     1050                 ; month day (e.g., Jun  2)
     1051</pre><div class="note">
     1052         <p> <b>Note:</b> Recipients of date values are encouraged to be robust in accepting date values that may have been sent by non-HTTP applications,
     1053            as is sometimes the case when retrieving or posting messages via proxies/gateways to SMTP or NNTP.
     1054         </p>
     1055      </div>
     1056      <div class="note">
     1057         <p> <b>Note:</b> HTTP requirements for the date/time stamp format apply only to their usage within the protocol stream. Clients and servers
     1058            are not required to use these formats for user presentation, request logging, etc.
     1059         </p>
     1060      </div>
    10441061      <h2 id="rfc.section.3.3"><a href="#rfc.section.3.3">3.3</a>&nbsp;<a id="transfer.codings" href="#transfer.codings">Transfer Codings</a></h2>
    10451062      <p id="rfc.section.3.3.p.1">Transfer-coding values are used to indicate an encoding transformation that has been, can be, or may need to be applied to
    … …  
    10471064         is a property of the message, not of the original entity.
    10481065      </p>
    1049       <div id="rfc.figure.u.21"></div><pre class="inline"><span id="rfc.iref.g.45"></span><span id="rfc.iref.g.46"></span>  <a href="#transfer.codings" class="smpl">transfer-coding</a>         = "chunked" / <a href="#transfer.codings" class="smpl">transfer-extension</a>
     1066      <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.49"></span><span id="rfc.iref.g.50"></span>  <a href="#transfer.codings" class="smpl">transfer-coding</a>         = "chunked" / <a href="#transfer.codings" class="smpl">transfer-extension</a>
    10501067  <a href="#transfer.codings" class="smpl">transfer-extension</a>      = <a href="#rule.token.separators" class="smpl">token</a> *( <a href="#rule.whitespace" class="smpl">OWS</a> ";" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#transfer.codings" class="smpl">parameter</a> )
    10511068</pre><div id="rule.parameter">
    10521069         <p id="rfc.section.3.3.p.3">      Parameters are in the form of attribute/value pairs.</p>
    10531070      </div>
    1054       <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.47"></span><span id="rfc.iref.g.48"></span><span id="rfc.iref.g.49"></span>  <a href="#transfer.codings" class="smpl">parameter</a>               = <a href="#rule.parameter" class="smpl">attribute</a> <a href="#rule.whitespace" class="smpl">BWS</a> "=" <a href="#rule.whitespace" class="smpl">BWS</a> <a href="#rule.parameter" class="smpl">value</a>
     1071      <div id="rfc.figure.u.26"></div><pre class="inline"><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></span><span id="rfc.iref.g.53"></span><span id="rfc.iref.g.54"></span><span id="rfc.iref.g.55"></span>  <a href="#transfer.codings" class="smpl">parameter</a>               = <a href="#rule.parameter" class="smpl">attribute</a> <a href="#rule.whitespace" class="smpl">BWS</a> "=" <a href="#rule.whitespace" class="smpl">BWS</a> <a href="#rule.parameter" class="smpl">value</a>
    10551072  <a href="#rule.parameter" class="smpl">attribute</a>               = <a href="#rule.token.separators" class="smpl">token</a>
    10561073  <a href="#rule.parameter" class="smpl">value</a>                   = <a href="#rule.token.separators" class="smpl">token</a> / <a href="#rule.quoted-string" class="smpl">quoted-string</a>
    … …  
    10771094         necessary for the recipient to verify that it has received the full message.
    10781095      </p>
    1079       <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.50"></span><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></span><span id="rfc.iref.g.53"></span><span id="rfc.iref.g.54"></span><span id="rfc.iref.g.55"></span><span id="rfc.iref.g.56"></span><span id="rfc.iref.g.57"></span><span id="rfc.iref.g.58"></span>  <a href="#chunked.transfer.encoding" class="smpl">Chunked-Body</a>   = *<a href="#chunked.transfer.encoding" class="smpl">chunk</a>
     1096      <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.56"></span><span id="rfc.iref.g.57"></span><span id="rfc.iref.g.58"></span><span id="rfc.iref.g.59"></span><span id="rfc.iref.g.60"></span><span id="rfc.iref.g.61"></span><span id="rfc.iref.g.62"></span><span id="rfc.iref.g.63"></span><span id="rfc.iref.g.64"></span>  <a href="#chunked.transfer.encoding" class="smpl">Chunked-Body</a>   = *<a href="#chunked.transfer.encoding" class="smpl">chunk</a>
    10801097                   <a href="#chunked.transfer.encoding" class="smpl">last-chunk</a>
    10811098                   <a href="#chunked.transfer.encoding" class="smpl">trailer-part</a>
    … …  
    11151132      </p>
    11161133      <p id="rfc.section.3.3.1.p.7">A process for decoding the "chunked" transfer-coding can be represented in pseudo-code as:</p>
    1117       <div id="rfc.figure.u.24"></div><pre class="text">  length := 0
     1134      <div id="rfc.figure.u.28"></div><pre class="text">  length := 0
    11181135  read chunk-size, chunk-ext (if any) and CRLF
    11191136  while (chunk-size &gt; 0) {
    … …  
    11371154         By convention, the products are listed in order of their significance for identifying the application.
    11381155      </p>
    1139       <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.59"></span><span id="rfc.iref.g.60"></span>  <a href="#product.tokens" class="smpl">product</a>         = <a href="#rule.token.separators" class="smpl">token</a> ["/" <a href="#product.tokens" class="smpl">product-version</a>]
     1156      <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.65"></span><span id="rfc.iref.g.66"></span>  <a href="#product.tokens" class="smpl">product</a>         = <a href="#rule.token.separators" class="smpl">token</a> ["/" <a href="#product.tokens" class="smpl">product-version</a>]
    11401157  <a href="#product.tokens" class="smpl">product-version</a> = <a href="#rule.token.separators" class="smpl">token</a>
    11411158</pre><p id="rfc.section.3.4.p.3">Examples:</p>
    1142       <div id="rfc.figure.u.26"></div><pre class="text">  User-Agent: CERN-LineMode/2.15 libwww/2.17b3
     1159      <div id="rfc.figure.u.30"></div><pre class="text">  User-Agent: CERN-LineMode/2.15 libwww/2.17b3
    11431160  Server: Apache/0.8.4
    11441161</pre><p id="rfc.section.3.4.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 character <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).
    … …  
    11491166         a quality value of 0, then content with this parameter is `not acceptable' for the client. HTTP/1.1 applications <em class="bcp14">MUST NOT</em> generate more than three digits after the decimal point. User configuration of these values <em class="bcp14">SHOULD</em> also be limited in this fashion.
    11501167      </p>
    1151       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.61"></span>  <a href="#quality.values" class="smpl">qvalue</a>         = ( "0" [ "." 0*3<a href="#core.rules" class="smpl">DIGIT</a> ] )
     1168      <div id="rfc.figure.u.31"></div><pre class="inline"><span id="rfc.iref.g.67"></span>  <a href="#quality.values" class="smpl">qvalue</a>         = ( "0" [ "." 0*3<a href="#core.rules" class="smpl">DIGIT</a> ] )
    11521169                 / ( "1" [ "." 0*3("0") ] )
    11531170</pre><div class="note">
    … …  
    11581175      <h2 id="rfc.section.4.1"><a href="#rfc.section.4.1">4.1</a>&nbsp;<a id="message.types" href="#message.types">Message Types</a></h2>
    11591176      <p id="rfc.section.4.1.p.1">HTTP messages consist of requests from client to server and responses from server to client.</p>
    1160       <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.62"></span>  <a href="#message.types" class="smpl">HTTP-message</a>   = <a href="#request" class="smpl">Request</a> / <a href="#response" class="smpl">Response</a>     ; HTTP/1.1 messages
    1161 </pre><p id="rfc.section.4.1.p.3">Request (<a href="#request" title="Request">Section&nbsp;5</a>) and Response (<a href="#response" title="Response">Section&nbsp;6</a>) messages use the generic message format of <a href="#RFC5322" id="rfc.xref.RFC5322.2"><cite title="Internet Message Format">[RFC5322]</cite></a> for transferring entities (the payload of the message). Both types of message consist of a start-line, zero or more header
     1177      <div id="rfc.figure.u.32"></div><pre class="inline"><span id="rfc.iref.g.68"></span>  <a href="#message.types" class="smpl">HTTP-message</a>   = <a href="#request" class="smpl">Request</a> / <a href="#response" class="smpl">Response</a>     ; HTTP/1.1 messages
     1178</pre><p id="rfc.section.4.1.p.3">Request (<a href="#request" title="Request">Section&nbsp;5</a>) and Response (<a href="#response" title="Response">Section&nbsp;6</a>) messages use the generic message format of <a href="#RFC5322" id="rfc.xref.RFC5322.3"><cite title="Internet Message Format">[RFC5322]</cite></a> for transferring entities (the payload of the message). Both types of message consist of a start-line, zero or more header
    11621179         fields (also known as "headers"), an empty line (i.e., a line with nothing preceding the CRLF) indicating the end of the header
    11631180         fields, and possibly a message-body.
    11641181      </p>
    1165       <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.63"></span><span id="rfc.iref.g.64"></span>  <a href="#message.types" class="smpl">generic-message</a> = <a href="#message.types" class="smpl">start-line</a>
     1182      <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.69"></span><span id="rfc.iref.g.70"></span>  <a href="#message.types" class="smpl">generic-message</a> = <a href="#message.types" class="smpl">start-line</a>
    11661183                    *( <a href="#message.headers" class="smpl">message-header</a> <a href="#core.rules" class="smpl">CRLF</a> )
    11671184                    <a href="#core.rules" class="smpl">CRLF</a>
    … …  
    11791196      </p>
    11801197      <h2 id="rfc.section.4.2"><a href="#rfc.section.4.2">4.2</a>&nbsp;<a id="message.headers" href="#message.headers">Message Headers</a></h2>
    1181       <p id="rfc.section.4.2.p.1">HTTP header fields follow the same general format as Internet messages in <a href="http://tools.ietf.org/html/rfc5322#section-2.1">Section 2.1</a> of <a href="#RFC5322" id="rfc.xref.RFC5322.3"><cite title="Internet Message Format">[RFC5322]</cite></a>. Each header field consists of a name followed by a colon (":"), optional whitespace, and the field value. Field names are
     1198      <p id="rfc.section.4.2.p.1">HTTP header fields follow the same general format as Internet messages in <a href="http://tools.ietf.org/html/rfc5322#section-2.1">Section 2.1</a> of <a href="#RFC5322" id="rfc.xref.RFC5322.4"><cite title="Internet Message Format">[RFC5322]</cite></a>. Each header field consists of a name followed by a colon (":"), optional whitespace, and the field value. Field names are
    11821199         case-insensitive.
    11831200      </p>
    1184       <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.65"></span><span id="rfc.iref.g.66"></span><span id="rfc.iref.g.67"></span><span id="rfc.iref.g.68"></span>  <a href="#message.headers" class="smpl">message-header</a> = <a href="#message.headers" class="smpl">field-name</a> ":" OWS [ <a href="#message.headers" class="smpl">field-value</a> ] OWS
     1201      <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.71"></span><span id="rfc.iref.g.72"></span><span id="rfc.iref.g.73"></span><span id="rfc.iref.g.74"></span>  <a href="#message.headers" class="smpl">message-header</a> = <a href="#message.headers" class="smpl">field-name</a> ":" OWS [ <a href="#message.headers" class="smpl">field-value</a> ] OWS
    11851202  <a href="#message.headers" class="smpl">field-name</a>     = <a href="#rule.token.separators" class="smpl">token</a>
    11861203  <a href="#message.headers" class="smpl">field-value</a>    = *( <a href="#message.headers" class="smpl">field-content</a> / <a href="#rule.whitespace" class="smpl">OWS</a> )
    … …  
    12071224         </p>
    12081225      </div>
    1209       <div id="rfc.figure.u.31"></div><pre class="inline"><span id="rfc.iref.g.69"></span><span id="rfc.iref.g.70"></span>  <a href="#rule.comment" class="smpl">comment</a>        = "(" *( <a href="#rule.comment" class="smpl">ctext</a> / <a href="#rule.quoted-pair" class="smpl">quoted-pair</a> / <a href="#rule.comment" class="smpl">comment</a> ) ")"
     1226      <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.75"></span><span id="rfc.iref.g.76"></span>  <a href="#rule.comment" class="smpl">comment</a>        = "(" *( <a href="#rule.comment" class="smpl">ctext</a> / <a href="#rule.quoted-pair" class="smpl">quoted-pair</a> / <a href="#rule.comment" class="smpl">comment</a> ) ")"
    12101227  <a href="#rule.comment" class="smpl">ctext</a>          = <a href="#rule.whitespace" class="smpl">OWS</a> / %x21-27 / %x2A-5B / %x5D-7E / <a href="#rule.quoted-string" class="smpl">obs-text</a>
    12111228                 ; <a href="#rule.whitespace" class="smpl">OWS</a> / &lt;<a href="#core.rules" class="smpl">VCHAR</a> except "(", ")", and "\"&gt; / <a href="#rule.quoted-string" class="smpl">obs-text</a>
    … …  
    12301247         header field (<a href="#header.transfer-encoding" id="rfc.xref.header.transfer-encoding.2" title="Transfer-Encoding">Section&nbsp;8.7</a>).
    12311248      </p>
    1232       <div id="rfc.figure.u.32"></div><pre class="inline"><span id="rfc.iref.g.71"></span>  <a href="#message.body" class="smpl">message-body</a> = <a href="#abnf.dependencies" class="smpl">entity-body</a>
     1249      <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.77"></span>  <a href="#message.body" class="smpl">message-body</a> = <a href="#abnf.dependencies" class="smpl">entity-body</a>
    12331250               / &lt;entity-body encoded as per <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>&gt;
    12341251</pre><p id="rfc.section.4.3.p.3">Transfer-Encoding <em class="bcp14">MUST</em> be used to indicate any transfer-codings applied by an application to ensure safe and proper transfer of the message. Transfer-Encoding
    … …  
    12971314         to the entity being transferred. These header fields apply only to the message being transmitted.
    12981315      </p>
    1299       <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.72"></span>  <a href="#general.header.fields" class="smpl">general-header</a> = <a href="#abnf.dependencies" class="smpl">Cache-Control</a>            ; <a href="#Part6" id="rfc.xref.Part6.5"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.cache-control" title="Cache-Control">Section 3.2</a>
     1316      <div id="rfc.figure.u.37"></div><pre class="inline"><span id="rfc.iref.g.78"></span>  <a href="#general.header.fields" class="smpl">general-header</a> = <a href="#abnf.dependencies" class="smpl">Cache-Control</a>            ; <a href="#Part6" id="rfc.xref.Part6.5"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.cache-control" title="Cache-Control">Section 3.2</a>
    13001317                 / <a href="#header.connection" class="smpl">Connection</a>               ; <a href="#header.connection" id="rfc.xref.header.connection.1" title="Connection">Section&nbsp;8.1</a>
    13011318                 / <a href="#header.date" class="smpl">Date</a>                     ; <a href="#header.date" id="rfc.xref.header.date.1" title="Date">Section&nbsp;8.3</a>
    … …  
    13141331         resource, the identifier of the resource, and the protocol version in use.
    13151332      </p>
    1316       <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.73"></span>  <a href="#request" class="smpl">Request</a>       = <a href="#request-line" class="smpl">Request-Line</a>              ; <a href="#request-line" title="Request-Line">Section&nbsp;5.1</a>
     1333      <div id="rfc.figure.u.38"></div><pre class="inline"><span id="rfc.iref.g.79"></span>  <a href="#request" class="smpl">Request</a>       = <a href="#request-line" class="smpl">Request-Line</a>              ; <a href="#request-line" title="Request-Line">Section&nbsp;5.1</a>
    13171334                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    13181335                   / <a href="#abnf.dependencies" class="smpl">request-header</a>         ; <a href="#Part2" id="rfc.xref.Part2.4"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>, <a href="p2-semantics.html#request.header.fields" title="Request Header Fields">Section 3</a>
    … …  
    13241341         The elements are separated by SP characters. No CR or LF is allowed except in the final CRLF sequence.
    13251342      </p>
    1326       <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.74"></span>  <a href="#request-line" class="smpl">Request-Line</a>   = <a href="#method" class="smpl">Method</a> <a href="#core.rules" class="smpl">SP</a> <a href="#request-target" class="smpl">request-target</a> <a href="#core.rules" class="smpl">SP</a> <a href="#http.version" class="smpl">HTTP-Version</a> <a href="#core.rules" class="smpl">CRLF</a>
     1343      <div id="rfc.figure.u.39"></div><pre class="inline"><span id="rfc.iref.g.80"></span>  <a href="#request-line" class="smpl">Request-Line</a>   = <a href="#method" class="smpl">Method</a> <a href="#core.rules" class="smpl">SP</a> <a href="#request-target" class="smpl">request-target</a> <a href="#core.rules" class="smpl">SP</a> <a href="#http.version" class="smpl">HTTP-Version</a> <a href="#core.rules" class="smpl">CRLF</a>
    13271344</pre><h3 id="rfc.section.5.1.1"><a href="#rfc.section.5.1.1">5.1.1</a>&nbsp;<a id="method" href="#method">Method</a></h3>
    13281345      <p id="rfc.section.5.1.1.p.1">The Method token indicates the method to be performed on the resource identified by the request-target. The method is case-sensitive.</p>
    1329       <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.75"></span><span id="rfc.iref.g.76"></span>  <a href="#method" class="smpl">Method</a>         = <a href="#rule.token.separators" class="smpl">token</a>
     1346      <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.81"></span><span id="rfc.iref.g.82"></span>  <a href="#method" class="smpl">Method</a>         = <a href="#rule.token.separators" class="smpl">token</a>
    13301347</pre><h3 id="rfc.section.5.1.2"><a href="#rfc.section.5.1.2">5.1.2</a>&nbsp;<a id="request-target" href="#request-target">request-target</a></h3>
    13311348      <p id="rfc.section.5.1.2.p.1">The request-target identifies the resource upon which to apply the request.</p>
    1332       <div id="rfc.figure.u.37"></div><pre class="inline"><span id="rfc.iref.g.77"></span>  <a href="#request-target" class="smpl">request-target</a> = "*"
     1349      <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.83"></span>  <a href="#request-target" class="smpl">request-target</a> = "*"
    13331350                 / <a href="#uri" class="smpl">absolute-URI</a>
    13341351                 / ( <a href="#uri" class="smpl">path-absolute</a> [ "?" <a href="#uri" class="smpl">query</a> ] )
    … …  
    13381355         apply to a resource. One example would be
    13391356      </p>
    1340       <div id="rfc.figure.u.38"></div><pre class="text">  OPTIONS * HTTP/1.1
     1357      <div id="rfc.figure.u.42"></div><pre class="text">  OPTIONS * HTTP/1.1
    13411358</pre><p id="rfc.section.5.1.2.p.5">The absolute-URI form is <em class="bcp14">REQUIRED</em> when the request is being made to a proxy. The proxy is requested to forward the request or service it from a valid cache,
    13421359         and return the response. Note that the proxy <em class="bcp14">MAY</em> forward the request on to another proxy or directly to the server specified by the absolute-URI. In order to avoid request
    … …  
    13441361         Request-Line would be:
    13451362      </p>
    1346       <div id="rfc.figure.u.39"></div><pre class="text">  GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1
     1363      <div id="rfc.figure.u.43"></div><pre class="text">  GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1
    13471364</pre><p id="rfc.section.5.1.2.p.7">To allow for transition to absolute-URIs in all requests in future versions of HTTP, all HTTP/1.1 servers <em class="bcp14">MUST</em> accept the absolute-URI form in requests, even though HTTP/1.1 clients will only generate them in requests to proxies.
    13481365      </p>
    … …  
    13531370         server would create a TCP connection to port 80 of the host "www.example.org" and send the lines:
    13541371      </p>
    1355       <div id="rfc.figure.u.40"></div><pre class="text">  GET /pub/WWW/TheProject.html HTTP/1.1
     1372      <div id="rfc.figure.u.44"></div><pre class="text">  GET /pub/WWW/TheProject.html HTTP/1.1
    13561373  Host: www.example.org
    13571374</pre><p id="rfc.section.5.1.2.p.11">followed by the remainder of the Request. Note that the absolute path cannot be empty; if none is present in the original
    … …  
    13611378         asterisk form of request-target, then the last proxy on the request chain <em class="bcp14">MUST</em> forward the request with "*" as the final request-target.
    13621379      </p>
    1363       <div id="rfc.figure.u.41"></div>
     1380      <div id="rfc.figure.u.45"></div>
    13641381      <p>For example, the request</p><pre class="text">  OPTIONS http://www.example.org:8001 HTTP/1.1
    1365 </pre><div id="rfc.figure.u.42"></div>
     1382</pre><div id="rfc.figure.u.46"></div>
    13661383      <p>would be forwarded by the proxy as</p><pre class="text">  OPTIONS * HTTP/1.1
    13671384  Host: www.example.org:8001
    … …  
    14061423      <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="response" href="#response">Response</a></h1>
    14071424      <p id="rfc.section.6.p.1">After receiving and interpreting a request message, a server responds with an HTTP response message.</p>
    1408       <div id="rfc.figure.u.43"></div><pre class="inline"><span id="rfc.iref.g.78"></span>  <a href="#response" class="smpl">Response</a>      = <a href="#status-line" class="smpl">Status-Line</a>               ; <a href="#status-line" title="Status-Line">Section&nbsp;6.1</a>
     1425      <div id="rfc.figure.u.47"></div><pre class="inline"><span id="rfc.iref.g.84"></span>  <a href="#response" class="smpl">Response</a>      = <a href="#status-line" class="smpl">Status-Line</a>               ; <a href="#status-line" title="Status-Line">Section&nbsp;6.1</a>
    14091426                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    14101427                   / <a href="#abnf.dependencies" class="smpl">response-header</a>        ; <a href="#Part2" id="rfc.xref.Part2.7"><cite title="HTTP/1.1, part 2: Message Semantics">[Part2]</cite></a>, <a href="p2-semantics.html#response.header.fields" title="Response Header Fields">Section 5</a>
    … …  
    14171434         CRLF sequence.
    14181435      </p>
    1419       <div id="rfc.figure.u.44"></div><pre class="inline"><span id="rfc.iref.g.79"></span>  <a href="#status-line" class="smpl">Status-Line</a> = <a href="#http.version" class="smpl">HTTP-Version</a> <a href="#core.rules" class="smpl">SP</a> <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a> <a href="#core.rules" class="smpl">SP</a> <a href="#status.code.and.reason.phrase" class="smpl">Reason-Phrase</a> <a href="#core.rules" class="smpl">CRLF</a>
     1436      <div id="rfc.figure.u.48"></div><pre class="inline"><span id="rfc.iref.g.85"></span>  <a href="#status-line" class="smpl">Status-Line</a> = <a href="#http.version" class="smpl">HTTP-Version</a> <a href="#core.rules" class="smpl">SP</a> <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a> <a href="#core.rules" class="smpl">SP</a> <a href="#status.code.and.reason.phrase" class="smpl">Reason-Phrase</a> <a href="#core.rules" class="smpl">CRLF</a>
    14201437</pre><h3 id="rfc.section.6.1.1"><a href="#rfc.section.6.1.1">6.1.1</a>&nbsp;<a id="status.code.and.reason.phrase" href="#status.code.and.reason.phrase">Status Code and Reason Phrase</a></h3>
    14211438      <p id="rfc.section.6.1.1.p.1">The Status-Code element is a 3-digit integer result code of the attempt to understand and satisfy the request. These codes
    … …  
    14341451         <li>5xx: Server Error - The server failed to fulfill an apparently valid request</li>
    14351452      </ul>
    1436       <div id="rfc.figure.u.45"></div><pre class="inline"><span id="rfc.iref.g.80"></span><span id="rfc.iref.g.81"></span><span id="rfc.iref.g.82"></span>  <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a>    = 3<a href="#core.rules" class="smpl">DIGIT</a>
     1453      <div id="rfc.figure.u.49"></div><pre class="inline"><span id="rfc.iref.g.86"></span><span id="rfc.iref.g.87"></span><span id="rfc.iref.g.88"></span>  <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a>    = 3<a href="#core.rules" class="smpl">DIGIT</a>
    14371454  <a href="#status.code.and.reason.phrase" class="smpl">Reason-Phrase</a>  = *( <a href="#core.rules" class="smpl">WSP</a> / <a href="#core.rules" class="smpl">VCHAR</a> / <a href="#rule.quoted-string" class="smpl">obs-text</a> )
    14381455</pre><h1 id="rfc.section.7"><a href="#rfc.section.7">7.</a>&nbsp;<a id="connections" href="#connections">Connections</a></h1>
    … …  
    16261643      </p>
    16271644      <p id="rfc.section.8.1.p.2">The Connection header's value has the following grammar:</p>
    1628       <div id="rfc.figure.u.46"></div><pre class="inline"><span id="rfc.iref.g.83"></span><span id="rfc.iref.g.84"></span><span id="rfc.iref.g.85"></span>  <a href="#header.connection" class="smpl">Connection</a>       = "Connection" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.connection" class="smpl">Connection-v</a>
     1645      <div id="rfc.figure.u.50"></div><pre class="inline"><span id="rfc.iref.g.89"></span><span id="rfc.iref.g.90"></span><span id="rfc.iref.g.91"></span>  <a href="#header.connection" class="smpl">Connection</a>       = "Connection" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.connection" class="smpl">Connection-v</a>
    16291646  <a href="#header.connection" class="smpl">Connection-v</a>     = 1#<a href="#header.connection" class="smpl">connection-token</a>
    16301647  <a href="#header.connection" class="smpl">connection-token</a> = <a href="#rule.token.separators" class="smpl">token</a>
    … …  
    16391656         of the response. For example,
    16401657      </p>
    1641       <div id="rfc.figure.u.47"></div><pre class="text">  Connection: close
     1658      <div id="rfc.figure.u.51"></div><pre class="text">  Connection: close
    16421659</pre><p id="rfc.section.8.1.p.8">in either the request or the response header fields indicates that the connection <em class="bcp14">SHOULD NOT</em> be considered `persistent' (<a href="#persistent.connections" title="Persistent Connections">Section&nbsp;7.1</a>) after the current request/response is complete.
    16431660      </p>
    … …  
    16551672         or, in the case of the HEAD method, the size of the entity-body that would have been sent had the request been a GET.
    16561673      </p>
    1657       <div id="rfc.figure.u.48"></div><pre class="inline"><span id="rfc.iref.g.86"></span><span id="rfc.iref.g.87"></span>  <a href="#header.content-length" class="smpl">Content-Length</a>   = "Content-Length" ":" <a href="#rule.whitespace" class="smpl">OWS</a> 1*<a href="#header.content-length" class="smpl">Content-Length-v</a>
     1674      <div id="rfc.figure.u.52"></div><pre class="inline"><span id="rfc.iref.g.92"></span><span id="rfc.iref.g.93"></span>  <a href="#header.content-length" class="smpl">Content-Length</a>   = "Content-Length" ":" <a href="#rule.whitespace" class="smpl">OWS</a> 1*<a href="#header.content-length" class="smpl">Content-Length-v</a>
    16581675  <a href="#header.content-length" class="smpl">Content-Length-v</a> = 1*<a href="#core.rules" class="smpl">DIGIT</a>
    16591676</pre><p id="rfc.section.8.2.p.3">An example is</p>
    1660       <div id="rfc.figure.u.49"></div><pre class="text">  Content-Length: 3495
     1677      <div id="rfc.figure.u.53"></div><pre class="text">  Content-Length: 3495
    16611678</pre><p id="rfc.section.8.2.p.5">Applications <em class="bcp14">SHOULD</em> use this field to indicate the transfer-length of the message-body, unless this is prohibited by the rules in <a href="#message.length" title="Message Length">Section&nbsp;4.4</a>.
    16621679      </p>
    … …  
    16711688      <h2 id="rfc.section.8.3"><a href="#rfc.section.8.3">8.3</a>&nbsp;<a id="header.date" href="#header.date">Date</a></h2>
    16721689      <p id="rfc.section.8.3.p.1">The general-header field "Date" represents the date and time at which the message was originated, having the same semantics
    1673          as orig-date 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.RFC5322.4"><cite title="Internet Message Format">[RFC5322]</cite></a>. The field value is an HTTP-date, as described in <a href="#full.date" title="Full Date">Section&nbsp;3.2.1</a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
    1674       </p>
    1675       <div id="rfc.figure.u.50"></div><pre class="inline"><span id="rfc.iref.g.88"></span><span id="rfc.iref.g.89"></span>  <a href="#header.date" class="smpl">Date</a>   = "Date" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.date" class="smpl">Date-v</a>
    1676   <a href="#header.date" class="smpl">Date-v</a> = <a href="#full.date" class="smpl">HTTP-date</a>
     1690         as orig-date 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.RFC5322.5"><cite title="Internet Message Format">[RFC5322]</cite></a>. The field value is an HTTP-date, as described in <a href="#date.time.formats.full.date" title="Date/Time Formats: Full Date">Section&nbsp;3.2</a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
     1691      </p>
     1692      <div id="rfc.figure.u.54"></div><pre class="inline"><span id="rfc.iref.g.94"></span><span id="rfc.iref.g.95"></span>  <a href="#header.date" class="smpl">Date</a>   = "Date" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.date" class="smpl">Date-v</a>
     1693  <a href="#header.date" class="smpl">Date-v</a> = <a href="#date.time.formats.full.date" class="smpl">HTTP-date</a>
    16771694</pre><p id="rfc.section.8.3.p.3">An example is</p>
    1678       <div id="rfc.figure.u.51"></div><pre class="text">  Date: Tue, 15 Nov 1994 08:12:31 GMT
     1695      <div id="rfc.figure.u.55"></div><pre class="text">  Date: Tue, 15 Nov 1994 08:12:31 GMT
    16791696</pre><p id="rfc.section.8.3.p.5">Origin servers <em class="bcp14">MUST</em> include a Date header field in all responses, except in these cases:
    16801697      </p>
    … …  
    17121729         a single IP address.
    17131730      </p>
    1714       <div id="rfc.figure.u.52"></div><pre class="inline"><span id="rfc.iref.g.90"></span><span id="rfc.iref.g.91"></span>  <a href="#header.host" class="smpl">Host</a>   = "Host" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.host" class="smpl">Host-v</a>
     1731      <div id="rfc.figure.u.56"></div><pre class="inline"><span id="rfc.iref.g.96"></span><span id="rfc.iref.g.97"></span>  <a href="#header.host" class="smpl">Host</a>   = "Host" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.host" class="smpl">Host-v</a>
    17151732  <a href="#header.host" class="smpl">Host-v</a> = <a href="#uri" class="smpl">uri-host</a> [ ":" <a href="#uri" class="smpl">port</a> ] ; <a href="#http.uri" title="http URI scheme">Section&nbsp;2.1.1</a>
    17161733</pre><p id="rfc.section.8.4.p.3">A "host" without any trailing port information implies the default port for the service requested (e.g., "80" for an HTTP
    17171734         URL). For example, a request on the origin server for &lt;http://www.example.org/pub/WWW/&gt; would properly include:
    17181735      </p>
    1719       <div id="rfc.figure.u.53"></div><pre class="text">  GET /pub/WWW/ HTTP/1.1
     1736      <div id="rfc.figure.u.57"></div><pre class="text">  GET /pub/WWW/ HTTP/1.1
    17201737  Host: www.example.org
    17211738</pre><p id="rfc.section.8.4.p.5">A client <em class="bcp14">MUST</em> include a Host header field in all HTTP/1.1 request messages. If the requested URI does not include an Internet host name
    … …  
    17321749         and/or a comma-separated list of extension transfer-coding names with optional accept parameters (as described in <a href="#transfer.codings" title="Transfer Codings">Section&nbsp;3.3</a>).
    17331750      </p>
    1734       <div id="rfc.figure.u.54"></div><pre class="inline"><span id="rfc.iref.g.92"></span><span id="rfc.iref.g.93"></span><span id="rfc.iref.g.94"></span><span id="rfc.iref.g.95"></span><span id="rfc.iref.g.96"></span>  <a href="#header.te" class="smpl">TE</a>        = "TE" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.te" class="smpl">TE-v</a>
     1751      <div id="rfc.figure.u.58"></div><pre class="inline"><span id="rfc.iref.g.98"></span><span id="rfc.iref.g.99"></span><span id="rfc.iref.g.100"></span><span id="rfc.iref.g.101"></span><span id="rfc.iref.g.102"></span>  <a href="#header.te" class="smpl">TE</a>        = "TE" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.te" class="smpl">TE-v</a>
    17351752  <a href="#header.te" class="smpl">TE-v</a>      = #<a href="#header.te" class="smpl">t-codings</a>
    17361753  <a href="#header.te" class="smpl">t-codings</a> = "trailers" / ( <a href="#transfer.codings" class="smpl">transfer-extension</a> [ <a href="#header.te" class="smpl">te-params</a> ] )
    … …  
    17411758      </p>
    17421759      <p id="rfc.section.8.5.p.4">Examples of its use are:</p>
    1743       <div id="rfc.figure.u.55"></div><pre class="text">  TE: deflate
     1760      <div id="rfc.figure.u.59"></div><pre class="text">  TE: deflate
    17441761  TE:
    17451762  TE: trailers, deflate;q=0.5
    … …  
    17781795         chunked transfer-coding.
    17791796      </p>
    1780       <div id="rfc.figure.u.56"></div><pre class="inline"><span id="rfc.iref.g.97"></span><span id="rfc.iref.g.98"></span>  <a href="#header.trailer" class="smpl">Trailer</a>   = "Trailer" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.trailer" class="smpl">Trailer-v</a>
     1797      <div id="rfc.figure.u.60"></div><pre class="inline"><span id="rfc.iref.g.103"></span><span id="rfc.iref.g.104"></span>  <a href="#header.trailer" class="smpl">Trailer</a>   = "Trailer" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.trailer" class="smpl">Trailer-v</a>
    17811798  <a href="#header.trailer" class="smpl">Trailer-v</a> = 1#<a href="#message.headers" class="smpl">field-name</a>
    17821799</pre><p id="rfc.section.8.6.p.3">An HTTP/1.1 message <em class="bcp14">SHOULD</em> include a Trailer header field in a message using chunked transfer-coding with a non-empty trailer. Doing so allows the recipient
    … …  
    17991816         transfer-coding is a property of the message, not of the entity.
    18001817      </p>
    1801       <div id="rfc.figure.u.57"></div><pre class="inline"><span id="rfc.iref.g.99"></span><span id="rfc.iref.g.100"></span>  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>   = "Transfer-Encoding" ":" <a href="#rule.whitespace" class="smpl">OWS</a>
     1818      <div id="rfc.figure.u.61"></div><pre class="inline"><span id="rfc.iref.g.105"></span><span id="rfc.iref.g.106"></span>  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>   = "Transfer-Encoding" ":" <a href="#rule.whitespace" class="smpl">OWS</a>
    18021819                        <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding-v</a>
    18031820  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding-v</a> = 1#<a href="#transfer.codings" class="smpl">transfer-coding</a>
    18041821</pre><p id="rfc.section.8.7.p.3">Transfer-codings are defined in <a href="#transfer.codings" title="Transfer Codings">Section&nbsp;3.3</a>. An example is:
    18051822      </p>
    1806       <div id="rfc.figure.u.58"></div><pre class="text">  Transfer-Encoding: chunked
     1823      <div id="rfc.figure.u.62"></div><pre class="text">  Transfer-Encoding: chunked
    18071824</pre><p id="rfc.section.8.7.p.5">If multiple encodings have been applied to an entity, the transfer-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 entity-header fields not defined by this specification.
    18081825      </p>
    … …  
    18141831         to use if the server finds it appropriate to switch protocols. The server <em class="bcp14">MUST</em> use the Upgrade header field within a 101 (Switching Protocols) response to indicate which protocol(s) are being switched.
    18151832      </p>
    1816       <div id="rfc.figure.u.59"></div><pre class="inline"><span id="rfc.iref.g.101"></span><span id="rfc.iref.g.102"></span>  <a href="#header.upgrade" class="smpl">Upgrade</a>   = "Upgrade" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.upgrade" class="smpl">Upgrade-v</a>
     1833      <div id="rfc.figure.u.63"></div><pre class="inline"><span id="rfc.iref.g.107"></span><span id="rfc.iref.g.108"></span>  <a href="#header.upgrade" class="smpl">Upgrade</a>   = "Upgrade" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.upgrade" class="smpl">Upgrade-v</a>
    18171834  <a href="#header.upgrade" class="smpl">Upgrade-v</a> = 1#<a href="#product.tokens" class="smpl">product</a>
    18181835</pre><p id="rfc.section.8.8.p.3">For example,</p>
    1819       <div id="rfc.figure.u.60"></div><pre class="text">  Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11
     1836      <div id="rfc.figure.u.64"></div><pre class="text">  Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11
    18201837</pre><p id="rfc.section.8.8.p.5">The Upgrade header field is intended to provide a simple mechanism for transition from HTTP/1.1 to some other, incompatible
    18211838         protocol. It does so by allowing the client to advertise its desire to use another protocol, such as a later version of HTTP
    … …  
    18431860      <h2 id="rfc.section.8.9"><a href="#rfc.section.8.9">8.9</a>&nbsp;<a id="header.via" href="#header.via">Via</a></h2>
    18441861      <p id="rfc.section.8.9.p.1">The general-header field "Via" <em class="bcp14">MUST</em> be used by gateways and proxies to indicate the intermediate protocols and recipients between the user agent and the server
    1845          on requests, and between the origin server and the client on responses. It is analogous to the "Received" field defined in <a href="http://tools.ietf.org/html/rfc5322#section-3.6.7">Section 3.6.7</a> of <a href="#RFC5322" id="rfc.xref.RFC5322.5"><cite title="Internet Message Format">[RFC5322]</cite></a> and is intended to be used for tracking message forwards, avoiding request loops, and identifying the protocol capabilities
     1862         on requests, and between the origin server and the client on responses. It is analogous to the "Received" field defined in <a href="http://tools.ietf.org/html/rfc5322#section-3.6.7">Section 3.6.7</a> of <a href="#RFC5322" id="rfc.xref.RFC5322.6"><cite title="Internet Message Format">[RFC5322]</cite></a> and is intended to be used for tracking message forwards, avoiding request loops, and identifying the protocol capabilities
    18461863         of all senders along the request/response chain.
    18471864      </p>
    1848       <div id="rfc.figure.u.61"></div><pre class="inline"><span id="rfc.iref.g.103"></span><span id="rfc.iref.g.104"></span><span id="rfc.iref.g.105"></span><span id="rfc.iref.g.106"></span><span id="rfc.iref.g.107"></span><span id="rfc.iref.g.108"></span><span id="rfc.iref.g.109"></span>  <a href="#header.via" class="smpl">Via</a>               = "Via" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.via" class="smpl">Via-v</a>
     1865      <div id="rfc.figure.u.65"></div><pre class="inline"><span id="rfc.iref.g.109"></span><span id="rfc.iref.g.110"></span><span id="rfc.iref.g.111"></span><span id="rfc.iref.g.112"></span><span id="rfc.iref.g.113"></span><span id="rfc.iref.g.114"></span><span id="rfc.iref.g.115"></span>  <a href="#header.via" class="smpl">Via</a>               = "Via" ":" <a href="#rule.whitespace" class="smpl">OWS</a> <a href="#header.via" class="smpl">Via-v</a>
    18491866  <a href="#header.via" class="smpl">Via-v</a>             = 1#( <a href="#header.via" class="smpl">received-protocol</a> <a href="#rule.whitespace" class="smpl">RWS</a> <a href="#header.via" class="smpl">received-by</a>
    18501867                          [ <a href="#rule.whitespace" class="smpl">RWS</a> <a href="#rule.comment" class="smpl">comment</a> ] )
    … …  
    18711888         server at www.example.com. The request received by www.example.com would then have the following Via header field:
    18721889      </p>
    1873       <div id="rfc.figure.u.62"></div><pre class="text">  Via: 1.0 fred, 1.1 p.example.net (Apache/1.1)
     1890      <div id="rfc.figure.u.66"></div><pre class="text">  Via: 1.0 fred, 1.1 p.example.net (Apache/1.1)
    18741891</pre><p id="rfc.section.8.9.p.9">Proxies and gateways used as a portal through a network firewall <em class="bcp14">SHOULD NOT</em>, by default, forward the names and ports of hosts within the firewall region. This information <em class="bcp14">SHOULD</em> only be propagated if explicitly enabled. If not enabled, the received-by host of any host behind the firewall <em class="bcp14">SHOULD</em> be replaced by an appropriate pseudonym for that host.
    18751892      </p>
    … …  
    18771894         For example,
    18781895      </p>
    1879       <div id="rfc.figure.u.63"></div><pre class="text">  Via: 1.0 ricky, 1.1 ethel, 1.1 fred, 1.0 lucy
     1896      <div id="rfc.figure.u.67"></div><pre class="text">  Via: 1.0 ricky, 1.1 ethel, 1.1 fred, 1.0 lucy
    18801897</pre><p id="rfc.section.8.9.p.12">could be collapsed to</p>
    1881       <div id="rfc.figure.u.64"></div><pre class="text">  Via: 1.0 ricky, 1.1 mertz, 1.0 lucy
     1898      <div id="rfc.figure.u.68"></div><pre class="text">  Via: 1.0 ricky, 1.1 mertz, 1.0 lucy
    18821899</pre><p id="rfc.section.8.9.p.14">Applications <em class="bcp14">SHOULD NOT</em> combine multiple entries unless they are all under the same organizational control and the hosts have already been replaced
    18831900         by pseudonyms. Applications <em class="bcp14">MUST NOT</em> combine entries which have different received-protocol values.
    … …  
    25312548         </dd>
    25322549      </dl>
    2533       <p id="rfc.section.C.p.8"> <span id="rfc.iref.g.110"></span>  <dfn>gateway</dfn> 
     2550      <p id="rfc.section.C.p.8"> <span id="rfc.iref.g.116"></span>  <dfn>gateway</dfn> 
    25342551      </p>
    25352552      <dl class="empty">
    … …  
    26292646      </dl>
    26302647      <h1 id="rfc.section.D"><a href="#rfc.section.D">D.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
    2631       <div id="rfc.figure.u.65"></div> <pre class="inline"><a href="#rule.whitespace" class="smpl">BWS</a> = OWS
     2648      <div id="rfc.figure.u.69"></div> <pre class="inline"><a href="#rule.whitespace" class="smpl">BWS</a> = OWS
    26322649
    26332650<a href="#abnf.dependencies" class="smpl">Cache-Control</a> = &lt;Cache-Control, defined in [Part6], Section 3.4&gt;
    … …  
    26422659<a href="#header.date" class="smpl">Date-v</a> = HTTP-date
    26432660
    2644 GMT = %x47.4D.54
     2661<a href="#preferred.date.format" class="smpl">GMT</a> = %x47.4D.54
    26452662
    26462663<a href="#http.version" class="smpl">HTTP-Prot-Name</a> = %x48.54.54.50
    26472664<a href="#http.version" class="smpl">HTTP-Version</a> = HTTP-Prot-Name "/" 1*DIGIT "." 1*DIGIT
    2648 <a href="#full.date" class="smpl">HTTP-date</a> = rfc1123-date / obsolete-date
     2665<a href="#date.time.formats.full.date" class="smpl">HTTP-date</a> = rfc1123-date / obs-date
    26492666<a href="#message.types" class="smpl">HTTP-message</a> = Request / Response
    26502667<a href="#header.host" class="smpl">Host</a> = "Host:" OWS Host-v
    … …  
    26892706
    26902707<a href="#uri" class="smpl">absolute-URI</a> = &lt;absolute-URI, defined in [RFC3986], Section 4.3&gt;
    2691 <a href="#full.date" class="smpl">asctime-date</a> = wkday SP date3 SP time SP 4DIGIT
     2708<a href="#obsolete.date.formats" class="smpl">asctime-date</a> = day-name SP date3 SP time-of-day SP year
    26922709<a href="#rule.parameter" class="smpl">attribute</a> = token
    26932710<a href="#uri" class="smpl">authority</a> = &lt;authority, defined in [RFC3986], Section 3.2&gt;
    … …  
    27032720<a href="#rule.comment" class="smpl">ctext</a> = OWS / %x21-27 / %x2A-5B / %x5D-7E / obs-text
    27042721
    2705 <a href="#full.date" class="smpl">date1</a> = 2DIGIT SP month SP 4DIGIT
    2706 <a href="#full.date" class="smpl">date2</a> = 2DIGIT "-" month "-" 2DIGIT
    2707 <a href="#full.date" class="smpl">date3</a> = month SP ( 2DIGIT / ( SP DIGIT ) )
     2722<a href="#obsolete.date.formats" class="smpl">date1</a> = day SP month SP year
     2723<a href="#obsolete.date.formats" class="smpl">date2</a> = day "-" month "-" 2DIGIT
     2724<a href="#obsolete.date.formats" class="smpl">date3</a> = month SP ( 2DIGIT / ( SP DIGIT ) )
     2725<a href="#preferred.date.format" class="smpl">day</a> = 2DIGIT
     2726<a href="#preferred.date.format" class="smpl">day-name</a> = s-Mon / s-Tue / s-Wed / s-Thu / s-Fri / s-Sat / s-Sun
     2727<a href="#obsolete.date.formats" class="smpl">day-name-l</a> = l-Mon / l-Tue / l-Wed / l-Thu / l-Fri / l-Sat / l-Sun
    27082728
    27092729<a href="#abnf.dependencies" class="smpl">entity-body</a> = &lt;entity-body, defined in [Part3], Section 3.2&gt;
    … …  
    27202740 message-body ]
    27212741
     2742<a href="#preferred.date.format" class="smpl">hour</a> = 2DIGIT
    27222743<a href="#http.uri" class="smpl">http-URI</a> = "http://" authority path-abempty [ "?" query ]
    27232744
    … …  
    27342755 &lt;entity-body encoded as per Transfer-Encoding&gt;
    27352756<a href="#message.headers" class="smpl">message-header</a> = field-name ":" OWS [ field-value ] OWS
    2736 <a href="#full.date" class="smpl">month</a> = s-Jan / s-Feb / s-Mar / s-Apr / s-May / s-Jun / s-Jul / s-Aug
     2757<a href="#preferred.date.format" class="smpl">minute</a> = 2DIGIT
     2758<a href="#preferred.date.format" class="smpl">month</a> = s-Jan / s-Feb / s-Mar / s-Apr / s-May / s-Jun / s-Jul / s-Aug
    27372759 / s-Sep / s-Oct / s-Nov / s-Dec
    27382760
     2761<a href="#obsolete.date.formats" class="smpl">obs-date</a> = rfc850-date / asctime-date
    27392762<a href="#rule.whitespace" class="smpl">obs-fold</a> = CRLF
    27402763<a href="#rule.quoted-string" class="smpl">obs-text</a> = %x80-FF
    2741 <a href="#full.date" class="smpl">obsolete-date</a> = rfc850-date / asctime-date
    27422764
    27432765<a href="#transfer.codings" class="smpl">parameter</a> = attribute BWS "=" BWS value
    … …  
    27662788 / authority
    27672789<a href="#abnf.dependencies" class="smpl">response-header</a> = &lt;response-header, defined in [Part2], Section 5&gt;
    2768 <a href="#full.date" class="smpl">rfc1123-date</a> = wkday "," SP date1 SP time SP GMT
    2769 <a href="#full.date" class="smpl">rfc850-date</a> = weekday "," SP date2 SP time SP GMT
     2790<a href="#preferred.date.format" class="smpl">rfc1123-date</a> = day-name "," SP date1 SP time-of-day SP GMT
     2791<a href="#obsolete.date.formats" class="smpl">rfc850-date</a> = day-name-l "," SP date2 SP time-of-day SP GMT
    27702792
    27712793s-Apr = %x41.70.72
    … …  
    27882810s-Tue = %x54.75.65
    27892811s-Wed = %x57.65.64
     2812<a href="#preferred.date.format" class="smpl">second</a> = 2DIGIT
    27902813<a href="#message.types" class="smpl">start-line</a> = Request-Line / Status-Line
    27912814
    … …  
    27952818<a href="#header.te" class="smpl">te-ext</a> = OWS ";" OWS token [ "=" ( token / quoted-string ) ]
    27962819<a href="#header.te" class="smpl">te-params</a> = OWS ";" OWS "q=" qvalue *te-ext
    2797 <a href="#full.date" class="smpl">time</a> = 2DIGIT ":" 2DIGIT ":" 2DIGIT
     2820<a href="#preferred.date.format" class="smpl">time-of-day</a> = hour ":" minute ":" second
    27982821<a href="#rule.token.separators" class="smpl">token</a> = 1*tchar
    27992822<a href="#chunked.transfer.encoding" class="smpl">trailer-part</a> = *( entity-header CRLF )
    … …  
    28052828<a href="#rule.parameter" class="smpl">value</a> = token / quoted-string
    28062829
    2807 <a href="#full.date" class="smpl">weekday</a> = l-Mon / l-Tue / l-Wed / l-Thu / l-Fri / l-Sat / l-Sun
    2808 <a href="#full.date" class="smpl">wkday</a> = s-Mon / s-Tue / s-Wed / s-Thu / s-Fri / s-Sat / s-Sun
    2809 
    2810 
    2811 </pre> <div id="rfc.figure.u.66"></div>
     2830<a href="#preferred.date.format" class="smpl">year</a> = 4DIGIT
     2831
     2832
     2833</pre> <div id="rfc.figure.u.70"></div>
    28122834      <p>ABNF diagnostics:</p><pre class="inline">; Chunked-Body defined but not used
    28132835; Content-Length defined but not used
    … …  
    30033025         </li>
    30043026         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/162">http://tools.ietf.org/wg/httpbis/trac/ticket/162</a>&gt;: "comment ABNF"
     3027         </li>
     3028      </ul>
     3029      <p id="rfc.section.E.8.p.2">Partly resolved issues: </p>
     3030      <ul>
     3031         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/163">http://tools.ietf.org/wg/httpbis/trac/ticket/163</a>&gt;: "editorial improvements around HTTP-date"
    30053032         </li>
    30063033      </ul>
    … …  
    30343061            </li>
    30353062            <li class="indline0"><a id="rfc.index.G" href="#rfc.index.G"><b>G</b></a><ul class="ind">
    3036                   <li class="indline1">gateway&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.110">C</a></li>
     3063                  <li class="indline1">gateway&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.116">C</a></li>
    30373064                  <li class="indline1"><tt>Grammar</tt>&nbsp;&nbsp;
    30383065                     <ul class="ind">
    30393066                        <li class="indline1"><tt>absolute-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.24"><b>2.1</b></a></li>
    30403067                        <li class="indline1">ALPHA&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.1"><b>1.2</b></a></li>
    3041                         <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.2.1</b></a></li>
    3042                         <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>3.3</b></a></li>
     3068                        <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>3.2</b></a></li>
     3069                        <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>3.3</b></a></li>
    30433070                        <li class="indline1"><tt>authority</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.25"><b>2.1</b></a></li>
    30443071                        <li class="indline1"><tt>BWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>1.2.2</b></a></li>
    3045                         <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>3.3.1</b></a></li>
    3046                         <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>3.3.1</b></a></li>
    3047                         <li class="indline1"><tt>chunk-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>3.3.1</b></a></li>
    3048                         <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>3.3.1</b></a></li>
    3049                         <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>3.3.1</b></a></li>
    3050                         <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>3.3.1</b></a></li>
    3051                         <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>3.3.1</b></a></li>
    3052                         <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>4.2</b></a></li>
    3053                         <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>8.1</b></a></li>
    3054                         <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85"><b>8.1</b></a></li>
    3055                         <li class="indline1"><tt>Connection-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>8.1</b></a></li>
    3056                         <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86"><b>8.2</b></a></li>
    3057                         <li class="indline1"><tt>Content-Length-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>8.2</b></a></li>
     3072                        <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>3.3.1</b></a></li>
     3073                        <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>3.3.1</b></a></li>
     3074                        <li class="indline1"><tt>chunk-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>3.3.1</b></a></li>
     3075                        <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>3.3.1</b></a></li>
     3076                        <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>3.3.1</b></a></li>
     3077                        <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>3.3.1</b></a></li>
     3078                        <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>3.3.1</b></a></li>
     3079                        <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>4.2</b></a></li>
     3080                        <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.89"><b>8.1</b></a></li>
     3081                        <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.91"><b>8.1</b></a></li>
     3082                        <li class="indline1"><tt>Connection-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.90"><b>8.1</b></a></li>
     3083                        <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.92"><b>8.2</b></a></li>
     3084                        <li class="indline1"><tt>Content-Length-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.93"><b>8.2</b></a></li>
    30583085                        <li class="indline1">CR&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>1.2</b></a></li>
    30593086                        <li class="indline1">CRLF&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>1.2</b></a></li>
    3060                         <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>4.2</b></a></li>
     3087                        <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>4.2</b></a></li>
    30613088                        <li class="indline1">CTL&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>1.2</b></a></li>
    3062                         <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88"><b>8.3</b></a></li>
    3063                         <li class="indline1"><tt>Date-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.89"><b>8.3</b></a></li>
    3064                         <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.2.1</b></a></li>
    3065                         <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.2.1</b></a></li>
    3066                         <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.2.1</b></a></li>
     3089                        <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.94"><b>8.3</b></a></li>
     3090                        <li class="indline1"><tt>Date-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.95"><b>8.3</b></a></li>
     3091                        <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3.2</b></a></li>
     3092                        <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>3.3</b></a></li>
     3093                        <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>3.3</b></a></li>
     3094                        <li class="indline1"><tt>day</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.2</b></a></li>
     3095                        <li class="indline1"><tt>day-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.2</b></a></li>
     3096                        <li class="indline1"><tt>day-name-l</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.2</b></a></li>
    30673097                        <li class="indline1">DIGIT&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>1.2</b></a></li>
    30683098                        <li class="indline1">DQUOTE&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>1.2</b></a></li>
    3069                         <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>6.1.1</b></a></li>
    3070                         <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>5.1.1</b></a></li>
    3071                         <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>4.2</b></a></li>
    3072                         <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>4.2</b></a></li>
    3073                         <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>4.2</b></a></li>
    3074                         <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>4.5</b></a></li>
    3075                         <li class="indline1"><tt>generic-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>4.1</b></a></li>
     3099                        <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>6.1.1</b></a></li>
     3100                        <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>5.1.1</b></a></li>
     3101                        <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>4.2</b></a></li>
     3102                        <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>4.2</b></a></li>
     3103                        <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>4.2</b></a></li>
     3104                        <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>4.5</b></a></li>
     3105                        <li class="indline1"><tt>generic-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>4.1</b></a></li>
     3106                        <li class="indline1"><tt>GMT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>3.2</b></a></li>
    30763107                        <li class="indline1">HEXDIG&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>1.2</b></a></li>
    3077                         <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.90"><b>8.4</b></a></li>
    3078                         <li class="indline1"><tt>Host-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.91"><b>8.4</b></a></li>
    3079                         <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>3.2.1</b></a></li>
    3080                         <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>4.1</b></a></li>
     3108                        <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.96"><b>8.4</b></a></li>
     3109                        <li class="indline1"><tt>Host-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.97"><b>8.4</b></a></li>
     3110                        <li class="indline1"><tt>hour</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.2</b></a></li>
     3111                        <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>3.2</b></a></li>
     3112                        <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>4.1</b></a></li>
    30813113                        <li class="indline1"><tt>HTTP-Prot-Name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.32"><b>3.1</b></a></li>
    30823114                        <li class="indline1"><tt>http-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.30"><b>2.1.1</b></a></li>
    30833115                        <li class="indline1"><tt>HTTP-Version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.31"><b>3.1</b></a></li>
    3084                         <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>3.3.1</b></a></li>
     3116                        <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>3.3.1</b></a></li>
    30853117                        <li class="indline1">LF&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>1.2</b></a></li>
    3086                         <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>4.3</b></a></li>
    3087                         <li class="indline1"><tt>message-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>4.2</b></a></li>
    3088                         <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>5.1.1</b></a></li>
    3089                         <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>3.2.1</b></a></li>
     3118                        <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>4.3</b></a></li>
     3119                        <li class="indline1"><tt>message-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>4.2</b></a></li>
     3120                        <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>5.1.1</b></a></li>
     3121                        <li class="indline1"><tt>minute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.2</b></a></li>
     3122                        <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.2</b></a></li>
     3123                        <li class="indline1"><tt>obs-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>3.2</b></a></li>
    30903124                        <li class="indline1"><tt>obs-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>1.2.2</b></a></li>
    3091                         <li class="indline1"><tt>obsolete-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3.2.1</b></a></li>
    30923125                        <li class="indline1">OCTET&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>1.2</b></a></li>
    30933126                        <li class="indline1"><tt>OWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>1.2.2</b></a></li>
    3094                         <li class="indline1"><tt>parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>3.3</b></a></li>
     3127                        <li class="indline1"><tt>parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>3.3</b></a></li>
    30953128                        <li class="indline1"><tt>path-absolute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.26"><b>2.1</b></a></li>
    30963129                        <li class="indline1"><tt>port</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.27"><b>2.1</b></a></li>
    3097                         <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>3.4</b></a></li>
    3098                         <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>3.4</b></a></li>
    3099                         <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.106"><b>8.9</b></a></li>
    3100                         <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.107"><b>8.9</b></a></li>
    3101                         <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.109"><b>8.9</b></a></li>
     3130                        <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>3.4</b></a></li>
     3131                        <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>3.4</b></a></li>
     3132                        <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.112"><b>8.9</b></a></li>
     3133                        <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.113"><b>8.9</b></a></li>
     3134                        <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.115"><b>8.9</b></a></li>
    31023135                        <li class="indline1"><tt>qdtext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>1.2.2</b></a></li>
    31033136                        <li class="indline1"><tt>query</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.28"><b>2.1</b></a></li>
    … …  
    31053138                        <li class="indline1"><tt>quoted-string</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>1.2.2</b></a></li>
    31063139                        <li class="indline1"><tt>quoted-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>1.2.2</b></a></li>
    3107                         <li class="indline1"><tt>qvalue</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>3.5</b></a></li>
    3108                         <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>6.1.1</b></a></li>
    3109                         <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.108"><b>8.9</b></a></li>
    3110                         <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.105"><b>8.9</b></a></li>
    3111                         <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>5</b></a></li>
    3112                         <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>5.1</b></a></li>
    3113                         <li class="indline1"><tt>request-target</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>5.1.2</b></a></li>
    3114                         <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>6</b></a></li>
    3115                         <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>3.2.1</b></a></li>
    3116                         <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.2.1</b></a></li>
     3140                        <li class="indline1"><tt>qvalue</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>3.5</b></a></li>
     3141                        <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88"><b>6.1.1</b></a></li>
     3142                        <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.114"><b>8.9</b></a></li>
     3143                        <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.111"><b>8.9</b></a></li>
     3144                        <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>5</b></a></li>
     3145                        <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>5.1</b></a></li>
     3146                        <li class="indline1"><tt>request-target</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>5.1.2</b></a></li>
     3147                        <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>6</b></a></li>
     3148                        <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>3.2</b></a></li>
     3149                        <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>3.2</b></a></li>
    31173150                        <li class="indline1"><tt>RWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>1.2.2</b></a></li>
     3151                        <li class="indline1"><tt>second</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.2</b></a></li>
    31183152                        <li class="indline1">SP&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>1.2</b></a></li>
    3119                         <li class="indline1"><tt>start-line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>4.1</b></a></li>
    3120                         <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>6.1.1</b></a></li>
    3121                         <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>6.1</b></a></li>
    3122                         <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.94"><b>8.5</b></a></li>
     3153                        <li class="indline1"><tt>start-line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>4.1</b></a></li>
     3154                        <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86"><b>6.1.1</b></a></li>
     3155                        <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85"><b>6.1</b></a></li>
     3156                        <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.100"><b>8.5</b></a></li>
    31233157                        <li class="indline1"><tt>tchar</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>1.2.2</b></a></li>
    3124                         <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.92"><b>8.5</b></a></li>
    3125                         <li class="indline1"><tt>te-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.96"><b>8.5</b></a></li>
    3126                         <li class="indline1"><tt>te-params</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.95"><b>8.5</b></a></li>
    3127                         <li class="indline1"><tt>TE-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.93"><b>8.5</b></a></li>
    3128                         <li class="indline1"><tt>time</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.2.1</b></a></li>
     3158                        <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.98"><b>8.5</b></a></li>
     3159                        <li class="indline1"><tt>te-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.102"><b>8.5</b></a></li>
     3160                        <li class="indline1"><tt>te-params</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.101"><b>8.5</b></a></li>
     3161                        <li class="indline1"><tt>TE-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.99"><b>8.5</b></a></li>
     3162                        <li class="indline1"><tt>time-of-day</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.2</b></a></li>
    31293163                        <li class="indline1"><tt>token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>1.2.2</b></a></li>
    3130                         <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.97"><b>8.6</b></a></li>
    3131                         <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>3.3.1</b></a></li>
    3132                         <li class="indline1"><tt>Trailer-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.98"><b>8.6</b></a></li>
    3133                         <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>3.3</b></a></li>
    3134                         <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.99"><b>8.7</b></a></li>
    3135                         <li class="indline1"><tt>Transfer-Encoding-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.100"><b>8.7</b></a></li>
    3136                         <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>3.3</b></a></li>
    3137                         <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.101"><b>8.8</b></a></li>
    3138                         <li class="indline1"><tt>Upgrade-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.102"><b>8.8</b></a></li>
     3164                        <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.103"><b>8.6</b></a></li>
     3165                        <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>3.3.1</b></a></li>
     3166                        <li class="indline1"><tt>Trailer-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.104"><b>8.6</b></a></li>
     3167                        <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>3.3</b></a></li>
     3168                        <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.105"><b>8.7</b></a></li>
     3169                        <li class="indline1"><tt>Transfer-Encoding-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.106"><b>8.7</b></a></li>
     3170                        <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>3.3</b></a></li>
     3171                        <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.107"><b>8.8</b></a></li>
     3172                        <li class="indline1"><tt>Upgrade-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.108"><b>8.8</b></a></li>
    31393173                        <li class="indline1"><tt>uri-host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.29"><b>2.1</b></a></li>
    31403174                        <li class="indline1"><tt>URI-reference</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.23"><b>2.1</b></a></li>
    3141                         <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>3.3</b></a></li>
     3175                        <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>3.3</b></a></li>
    31423176                        <li class="indline1">VCHAR&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>1.2</b></a></li>
    3143                         <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.103"><b>8.9</b></a></li>
    3144                         <li class="indline1"><tt>Via-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.104"><b>8.9</b></a></li>
    3145                         <li class="indline1"><tt>weekday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.2.1</b></a></li>
    3146                         <li class="indline1"><tt>wkday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.2.1</b></a></li>
     3177                        <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.109"><b>8.9</b></a></li>
     3178                        <li class="indline1"><tt>Via-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.110"><b>8.9</b></a></li>
    31473179                        <li class="indline1">WSP&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>1.2</b></a></li>
     3180                        <li class="indline1"><tt>year</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>3.2</b></a></li>
    31483181                     </ul>
    31493182                  </li>
    … …  
    32393272                  <li class="indline1">resource&nbsp;&nbsp;<a class="iref" href="#rfc.iref.r.2">C</a></li>
    32403273                  <li class="indline1">response&nbsp;&nbsp;<a class="iref" href="#rfc.iref.r.3">C</a></li>
    3241                   <li class="indline1"><em>RFC1123</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC1123.1">3.2.1</a>, <a class="iref" href="#RFC1123"><b>12.2</b></a></li>
     3274                  <li class="indline1"><em>RFC1123</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC1123.1">3.2</a>, <a class="iref" href="#RFC1123"><b>12.2</b></a></li>
    32423275                  <li class="indline1"><em>RFC1305</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC1305.1">8.3</a>, <a class="iref" href="#RFC1305"><b>12.2</b></a></li>
    32433276                  <li class="indline1"><em>RFC1900</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC1900.1">2.1.1</a>, <a class="iref" href="#rfc.xref.RFC1900.2">10.4</a>, <a class="iref" href="#RFC1900"><b>12.2</b></a></li>
    … …  
    32763309                     </ul>
    32773310                  </li>
    3278                   <li class="indline1"><em>RFC5322</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.1">1</a>, <a class="iref" href="#rfc.xref.RFC5322.2">4.1</a>, <a class="iref" href="#rfc.xref.RFC5322.3">4.2</a>, <a class="iref" href="#rfc.xref.RFC5322.4">8.3</a>, <a class="iref" href="#rfc.xref.RFC5322.5">8.9</a>, <a class="iref" href="#RFC5322"><b>12.2</b></a><ul class="ind">
    3279                         <li class="indline1"><em>Section 2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.3">4.2</a></li>
    3280                         <li class="indline1"><em>Section 3.6.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.4">8.3</a></li>
    3281                         <li class="indline1"><em>Section 3.6.7</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.5">8.9</a></li>
     3311                  <li class="indline1"><em>RFC5322</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.1">1</a>, <a class="iref" href="#rfc.xref.RFC5322.2">3.2</a>, <a class="iref" href="#rfc.xref.RFC5322.3">4.1</a>, <a class="iref" href="#rfc.xref.RFC5322.4">4.2</a>, <a class="iref" href="#rfc.xref.RFC5322.5">8.3</a>, <a class="iref" href="#rfc.xref.RFC5322.6">8.9</a>, <a class="iref" href="#RFC5322"><b>12.2</b></a><ul class="ind">
     3312                        <li class="indline1"><em>Section 2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.4">4.2</a></li>
     3313                        <li class="indline1"><em>Section 3.6.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.5">8.3</a></li>
     3314                        <li class="indline1"><em>Section 3.6.7</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.6">8.9</a></li>
     3315                        <li class="indline1"><em>Section 3.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.RFC5322.2">3.2</a></li>
    32823316                     </ul>
    32833317                  </li>
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