Ignore:
Timestamp:
Nov 12, 2008, 2:51:58 PM (11 years ago)
Author:
julian.reschke@…
Message:

introduce BWS, OWS, RWS, but do not use them yet (related to #36)

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1 edited

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

    r349 r351  
    795795      </div>
    796796      <div id="rfc.figure.u.6"></div><pre class="inline"><span id="rfc.iref.g.1"></span>  <a href="#rule.LWS" class="smpl">LWS</a>            = [<a href="#core.rules" class="smpl">CRLF</a>] 1*( <a href="#core.rules" class="smpl">SP</a> / <a href="#core.rules" class="smpl">HTAB</a> )
    797 </pre><div id="rule.TEXT">
    798          <p id="rfc.section.2.2.p.5">  The TEXT rule is only used for descriptive field contents and values that are not intended to be interpreted by the message
     797</pre><div id="rule.whitespace">
     798         <p id="rfc.section.2.2.p.5">         <span class="comment">[rfc.comment.2: Add prose introducing the different kinds of WS.]</span> 
     799         </p>
     800         <div id="rfc.figure.u.7"></div><pre class="inline"><span id="rfc.iref.g.2"></span><span id="rfc.iref.g.3"></span><span id="rfc.iref.g.4"></span>  <a href="#rule.whitespace" class="smpl">OWS</a>            = 1*( [ obs-fold ] <a href="#core.rules" class="smpl">WSP</a> )
     801                 ; "optional" white space
     802  <a href="#rule.whitespace" class="smpl">RWS</a>            = 1*( [ obs-fold ] <a href="#core.rules" class="smpl">WSP</a> )
     803                 ; "required" white space
     804  <a href="#rule.whitespace" class="smpl">BWS</a>            = <a href="#rule.whitespace" class="smpl">OWS</a>
     805                 ; "bad" white space
     806  <a href="#rule.whitespace" class="smpl">obs-fold</a>       = <a href="#core.rules" class="smpl">CRLF</a>
     807                 ; <span class="comment">[rfc.comment.3: to be explained: do not produce]</span>
     808</pre></div>
     809      <div id="rule.TEXT">
     810         <p id="rfc.section.2.2.p.6">  The TEXT rule is only used for descriptive field contents and values that are not intended to be interpreted by the message
    799811            parser. Words of *TEXT <em class="bcp14">MAY</em> contain characters from character sets other than ISO-8859-1 <a href="#ISO-8859-1" id="rfc.xref.ISO-8859-1.1"><cite title="Information technology -- 8-bit single-byte coded graphic character sets -- Part 1: Latin alphabet No. 1">[ISO-8859-1]</cite></a> only when encoded according to the rules of <a href="#RFC2047" id="rfc.xref.RFC2047.1"><cite title="MIME (Multipurpose Internet Mail Extensions) Part Three: Message Header Extensions for Non-ASCII Text">[RFC2047]</cite></a>.
    800812         </p>
    801813      </div>
    802       <div id="rfc.figure.u.7"></div><pre class="inline"><span id="rfc.iref.g.2"></span>  <a href="#rule.TEXT" class="smpl">TEXT</a>           = %x20-7E / %x80-FF / <a href="#rule.LWS" class="smpl">LWS</a>
     814      <div id="rfc.figure.u.8"></div><pre class="inline"><span id="rfc.iref.g.5"></span>  <a href="#rule.TEXT" class="smpl">TEXT</a>           = %x20-7E / %x80-FF / <a href="#rule.LWS" class="smpl">LWS</a>
    803815                 ; any <a href="#core.rules" class="smpl">OCTET</a> except <a href="#core.rules" class="smpl">CTL</a>s, but including <a href="#rule.LWS" class="smpl">LWS</a>
    804 </pre><p id="rfc.section.2.2.p.7">A CRLF is allowed in the definition of TEXT only as part of a header field continuation. It is expected that the folding LWS
     816</pre><p id="rfc.section.2.2.p.8">A CRLF is allowed in the definition of TEXT only as part of a header field continuation. It is expected that the folding LWS
    805817         will be replaced with a single SP before interpretation of the TEXT value.
    806818      </p>
    807819      <div id="rule.token.separators">
    808          <p id="rfc.section.2.2.p.8">      Many HTTP/1.1 header field values consist of words separated by LWS or special characters. These special characters <em class="bcp14">MUST</em> be in a quoted string to be used within a parameter value (as defined in <a href="#transfer.codings" title="Transfer Codings">Section&nbsp;3.4</a>).
     820         <p id="rfc.section.2.2.p.9">      Many HTTP/1.1 header field values consist of words separated by LWS or special characters. These special characters <em class="bcp14">MUST</em> be in a quoted string to be used within a parameter value (as defined in <a href="#transfer.codings" title="Transfer Codings">Section&nbsp;3.4</a>).
    809821         </p>
    810822      </div>
    811       <div id="rfc.figure.u.8"></div><pre class="inline"><span id="rfc.iref.g.3"></span><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span>  <a href="#rule.token.separators" class="smpl">separators</a>     = "(" / ")" / "&lt;" / "&gt;" / "@"
     823      <div id="rfc.figure.u.9"></div><pre class="inline"><span id="rfc.iref.g.6"></span><span id="rfc.iref.g.7"></span><span id="rfc.iref.g.8"></span>  <a href="#rule.token.separators" class="smpl">separators</a>     = "(" / ")" / "&lt;" / "&gt;" / "@"
    812824                 / "," / ";" / ":" / "\" / <a href="#core.rules" class="smpl">DQUOTE</a>
    813825                 / "/" / "[" / "]" / "?" / "="
     
    821833  <a href="#rule.token.separators" class="smpl">token</a>          = 1*<a href="#rule.token.separators" class="smpl">tchar</a>
    822834</pre><div id="rule.comment">
    823          <p id="rfc.section.2.2.p.10">    Comments can be included in some HTTP header fields by surrounding the comment text with parentheses. Comments are only allowed
     835         <p id="rfc.section.2.2.p.11">    Comments can be included in some HTTP header fields by surrounding the comment text with parentheses. Comments are only allowed
    824836            in fields containing "comment" as part of their field value definition. In all other fields, parentheses are considered part
    825837            of the field value.
    826838         </p>
    827839      </div>
    828       <div id="rfc.figure.u.9"></div><pre class="inline"><span id="rfc.iref.g.6"></span><span id="rfc.iref.g.7"></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> ) ")"
     840      <div id="rfc.figure.u.10"></div><pre class="inline"><span id="rfc.iref.g.9"></span><span id="rfc.iref.g.10"></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> ) ")"
    829841  <a href="#rule.comment" class="smpl">ctext</a>          = &lt;any <a href="#rule.TEXT" class="smpl">TEXT</a> excluding "(" and ")"&gt;
    830842</pre><div id="rule.quoted-string">
    831          <p id="rfc.section.2.2.p.12">    A string of text is parsed as a single word if it is quoted using double-quote marks.</p>
     843         <p id="rfc.section.2.2.p.13">    A string of text is parsed as a single word if it is quoted using double-quote marks.</p>
    832844      </div>
    833       <div id="rfc.figure.u.10"></div><pre class="inline"><span id="rfc.iref.g.8"></span><span id="rfc.iref.g.9"></span>  <a href="#rule.quoted-string" class="smpl">quoted-string</a>  = ( <a href="#core.rules" class="smpl">DQUOTE</a> *(<a href="#rule.quoted-string" class="smpl">qdtext</a> / <a href="#rule.quoted-pair" class="smpl">quoted-pair</a> ) <a href="#core.rules" class="smpl">DQUOTE</a> )
     845      <div id="rfc.figure.u.11"></div><pre class="inline"><span id="rfc.iref.g.11"></span><span id="rfc.iref.g.12"></span>  <a href="#rule.quoted-string" class="smpl">quoted-string</a>  = ( <a href="#core.rules" class="smpl">DQUOTE</a> *(<a href="#rule.quoted-string" class="smpl">qdtext</a> / <a href="#rule.quoted-pair" class="smpl">quoted-pair</a> ) <a href="#core.rules" class="smpl">DQUOTE</a> )
    834846  <a href="#rule.quoted-string" class="smpl">qdtext</a>         = &lt;any <a href="#rule.TEXT" class="smpl">TEXT</a> excluding <a href="#core.rules" class="smpl">DQUOTE</a> and "\"&gt;
    835847</pre><div id="rule.quoted-pair">
    836          <p id="rfc.section.2.2.p.14">    The backslash character ("\") <em class="bcp14">MAY</em> be used as a single-character quoting mechanism only within quoted-string and comment constructs.
     848         <p id="rfc.section.2.2.p.15">    The backslash character ("\") <em class="bcp14">MAY</em> be used as a single-character quoting mechanism only within quoted-string and comment constructs.
    837849         </p>
    838850      </div>
    839       <div id="rfc.figure.u.11"></div><pre class="inline"><span id="rfc.iref.g.10"></span><span id="rfc.iref.g.11"></span>  <a href="#rule.quoted-pair" class="smpl">quoted-text</a>    = %x01-09 /
     851      <div id="rfc.figure.u.12"></div><pre class="inline"><span id="rfc.iref.g.13"></span><span id="rfc.iref.g.14"></span>  <a href="#rule.quoted-pair" class="smpl">quoted-text</a>    = %x01-09 /
    840852                   %x0B-0C /
    841853                   %x0E-FF ; Characters excluding NUL, <a href="#core.rules" class="smpl">CR</a> and <a href="#core.rules" class="smpl">LF</a>
     
    843855</pre><h2 id="rfc.section.2.3"><a href="#rfc.section.2.3">2.3</a>&nbsp;<a id="abnf.dependencies" href="#abnf.dependencies">ABNF Rules defined in other Parts of the Specification</a></h2>
    844856      <p id="rfc.section.2.3.p.1">The ABNF rules below are defined in other parts:</p>
    845       <div id="rfc.figure.u.12"></div><pre class="inline">  <a href="#abnf.dependencies" class="smpl">request-header</a>  = &lt;request-header, defined in <a href="#Part2" id="rfc.xref.Part2.1"><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 4</a>&gt;
     857      <div id="rfc.figure.u.13"></div><pre class="inline">  <a href="#abnf.dependencies" class="smpl">request-header</a>  = &lt;request-header, defined in <a href="#Part2" id="rfc.xref.Part2.1"><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 4</a>&gt;
    846858  <a href="#abnf.dependencies" class="smpl">response-header</a> = &lt;response-header, defined in <a href="#Part2" id="rfc.xref.Part2.2"><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 6</a>&gt;
    847 </pre><div id="rfc.figure.u.13"></div><pre class="inline">  <a href="#abnf.dependencies" class="smpl">accept-params</a>   = &lt;accept-params, defined in <a href="#Part3" id="rfc.xref.Part3.3"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept" title="Accept">Section 6.1</a>&gt;
     859</pre><div id="rfc.figure.u.14"></div><pre class="inline">  <a href="#abnf.dependencies" class="smpl">accept-params</a>   = &lt;accept-params, defined in <a href="#Part3" id="rfc.xref.Part3.3"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#header.accept" title="Accept">Section 6.1</a>&gt;
    848860  <a href="#abnf.dependencies" class="smpl">entity-body</a>     = &lt;entity-body, defined in <a href="#Part3" id="rfc.xref.Part3.4"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#entity.body" title="Entity Body">Section 4.2</a>&gt;
    849861  <a href="#abnf.dependencies" class="smpl">entity-header</a>   = &lt;entity-header, defined in <a href="#Part3" id="rfc.xref.Part3.5"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>, <a href="p3-payload.html#entity.header.fields" title="Entity Header Fields">Section 4.1</a>&gt;
    850 </pre><div id="rfc.figure.u.14"></div><pre class="inline">  <a href="#abnf.dependencies" class="smpl">Cache-Control</a>   = &lt;Cache-Control, defined in <a href="#Part6" id="rfc.xref.Part6.2"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.pragma" title="Pragma">Section 16.4</a>&gt;
     862</pre><div id="rfc.figure.u.15"></div><pre class="inline">  <a href="#abnf.dependencies" class="smpl">Cache-Control</a>   = &lt;Cache-Control, defined in <a href="#Part6" id="rfc.xref.Part6.2"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.pragma" title="Pragma">Section 16.4</a>&gt;
    851863  <a href="#abnf.dependencies" class="smpl">Pragma</a>          = &lt;Pragma, defined in <a href="#Part6" id="rfc.xref.Part6.3"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.pragma" title="Pragma">Section 16.4</a>&gt;
    852864  <a href="#abnf.dependencies" class="smpl">Warning</a>         = &lt;Warning, defined in <a href="#Part6" id="rfc.xref.Part6.4"><cite title="HTTP/1.1, part 6: Caching">[Part6]</cite></a>, <a href="p6-cache.html#header.warning" title="Warning">Section 16.6</a>&gt;
     
    862874      </p>
    863875      <p id="rfc.section.3.1.p.2">The version of an HTTP message is indicated by an HTTP-Version field in the first line of the message. HTTP-Version is case-sensitive.</p>
    864       <div id="rfc.figure.u.15"></div><pre class="inline"><span id="rfc.iref.g.12"></span><span id="rfc.iref.g.13"></span>  <a href="#http.version" class="smpl">HTTP-Version</a>   = <a href="#http.version" class="smpl">HTTP-Prot-Name</a> "/" 1*<a href="#core.rules" class="smpl">DIGIT</a> "." 1*<a href="#core.rules" class="smpl">DIGIT</a>
     876      <div id="rfc.figure.u.16"></div><pre class="inline"><span id="rfc.iref.g.15"></span><span id="rfc.iref.g.16"></span>  <a href="#http.version" class="smpl">HTTP-Version</a>   = <a href="#http.version" class="smpl">HTTP-Prot-Name</a> "/" 1*<a href="#core.rules" class="smpl">DIGIT</a> "." 1*<a href="#core.rules" class="smpl">DIGIT</a>
    865877  <a href="#http.version" class="smpl">HTTP-Prot-Name</a> = %x48.54.54.50 ; "HTTP", case-sensitive
    866878</pre><p id="rfc.section.3.1.p.4">Note that the major and minor numbers <em class="bcp14">MUST</em> be treated as separate integers and that each <em class="bcp14">MAY</em> be incremented higher than a single digit. Thus, HTTP/2.4 is a lower version than HTTP/2.13, which in turn is lower than HTTP/12.3.
     
    893905         "abs_path", "query", and "authority" from that specification:
    894906      </p>
    895       <div id="rfc.figure.u.16"></div><pre class="inline"><span id="rfc.iref.g.14"></span><span id="rfc.iref.g.15"></span><span id="rfc.iref.g.16"></span><span id="rfc.iref.g.17"></span><span id="rfc.iref.g.18"></span><span id="rfc.iref.g.19"></span><span id="rfc.iref.g.20"></span>  <a href="#general.syntax" class="smpl">absoluteURI</a>   = &lt;absoluteURI, defined in <a href="#RFC2396" id="rfc.xref.RFC2396.2"><cite title="Uniform Resource Identifiers (URI): Generic Syntax">[RFC2396]</cite></a>, <a href="http://tools.ietf.org/html/rfc2396#section-3">Section 3</a>&gt;
     907      <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.17"></span><span id="rfc.iref.g.18"></span><span id="rfc.iref.g.19"></span><span id="rfc.iref.g.20"></span><span id="rfc.iref.g.21"></span><span id="rfc.iref.g.22"></span><span id="rfc.iref.g.23"></span>  <a href="#general.syntax" class="smpl">absoluteURI</a>   = &lt;absoluteURI, defined in <a href="#RFC2396" id="rfc.xref.RFC2396.2"><cite title="Uniform Resource Identifiers (URI): Generic Syntax">[RFC2396]</cite></a>, <a href="http://tools.ietf.org/html/rfc2396#section-3">Section 3</a>&gt;
    896908  <a href="#general.syntax" class="smpl">authority</a>     = &lt;authority, defined in <a href="#RFC2396" id="rfc.xref.RFC2396.3"><cite title="Uniform Resource Identifiers (URI): Generic Syntax">[RFC2396]</cite></a>, <a href="http://tools.ietf.org/html/rfc2396#section-3.2">Section 3.2</a>&gt;
    897909  <a href="#general.syntax" class="smpl">fragment</a>      = &lt;fragment, defined in <a href="#RFC2396" id="rfc.xref.RFC2396.4"><cite title="Uniform Resource Identifiers (URI): Generic Syntax">[RFC2396]</cite></a>, <a href="http://tools.ietf.org/html/rfc2396#section-4.1">Section 4.1</a>&gt;
     
    915927         and semantics for http URLs.
    916928      </p>
    917       <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.21"></span>  <a href="#http.url" class="smpl">http-URL</a> = "http:" "//" <a href="#general.syntax" class="smpl">uri-host</a> [ ":" <a href="#general.syntax" class="smpl">port</a> ]
     929      <div id="rfc.figure.u.18"></div><pre class="inline"><span id="rfc.iref.g.24"></span>  <a href="#http.url" class="smpl">http-URL</a> = "http:" "//" <a href="#general.syntax" class="smpl">uri-host</a> [ ":" <a href="#general.syntax" class="smpl">port</a> ]
    918930             [ <a href="#general.syntax" class="smpl">path-absolute</a> [ "?" <a href="#general.syntax" class="smpl">query</a> ]]
    919931</pre><p id="rfc.section.3.2.2.p.3">If the port is empty or not given, port 80 is assumed. The semantics are that the identified resource is located at the server
     
    938950      </p>
    939951      <p id="rfc.section.3.2.3.p.3">For example, the following three URIs are equivalent:</p>
    940       <div id="rfc.figure.u.18"></div><pre class="text">   http://example.com:80/~smith/home.html
     952      <div id="rfc.figure.u.19"></div><pre class="text">   http://example.com:80/~smith/home.html
    941953   http://EXAMPLE.com/%7Esmith/home.html
    942954   http://EXAMPLE.com:/%7esmith/home.html
     
    944956      <h3 id="rfc.section.3.3.1"><a href="#rfc.section.3.3.1">3.3.1</a>&nbsp;<a id="full.date" href="#full.date">Full Date</a></h3>
    945957      <p id="rfc.section.3.3.1.p.1">HTTP applications have historically allowed three different formats for the representation of date/time stamps:</p>
    946       <div id="rfc.figure.u.19"></div><pre class="text">   Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
     958      <div id="rfc.figure.u.20"></div><pre class="text">   Sun, 06 Nov 1994 08:49:37 GMT  ; RFC 822, updated by RFC 1123
    947959   Sunday, 06-Nov-94 08:49:37 GMT ; obsolete RFC 850 format
    948960   Sun Nov  6 08:49:37 1994       ; ANSI C's asctime() format
     
    959971         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 LWS beyond that specifically included as SP in the grammar.
    960972      </p>
    961       <div id="rfc.figure.u.20"></div><pre class="inline"><span id="rfc.iref.g.22"></span><span id="rfc.iref.g.23"></span><span id="rfc.iref.g.24"></span><span id="rfc.iref.g.25"></span><span id="rfc.iref.g.26"></span><span id="rfc.iref.g.27"></span><span id="rfc.iref.g.28"></span><span id="rfc.iref.g.29"></span><span id="rfc.iref.g.30"></span><span id="rfc.iref.g.31"></span><span id="rfc.iref.g.32"></span><span id="rfc.iref.g.33"></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>
     973      <div id="rfc.figure.u.21"></div><pre class="inline"><span id="rfc.iref.g.25"></span><span id="rfc.iref.g.26"></span><span id="rfc.iref.g.27"></span><span id="rfc.iref.g.28"></span><span id="rfc.iref.g.29"></span><span id="rfc.iref.g.30"></span><span id="rfc.iref.g.31"></span><span id="rfc.iref.g.32"></span><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>  <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>
    962974  <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>
    963975  <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
     
    10181030         is a property of the message, not of the original entity.
    10191031      </p>
    1020       <div id="rfc.figure.u.21"></div><pre class="inline"><span id="rfc.iref.g.34"></span><span id="rfc.iref.g.35"></span>  <a href="#transfer.codings" class="smpl">transfer-coding</a>         = "chunked" / <a href="#transfer.codings" class="smpl">transfer-extension</a>
     1032      <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.37"></span><span id="rfc.iref.g.38"></span>  <a href="#transfer.codings" class="smpl">transfer-coding</a>         = "chunked" / <a href="#transfer.codings" class="smpl">transfer-extension</a>
    10211033  <a href="#transfer.codings" class="smpl">transfer-extension</a>      = <a href="#rule.token.separators" class="smpl">token</a> *( ";" <a href="#transfer.codings" class="smpl">parameter</a> )
    10221034</pre><div id="rule.parameter">
    10231035         <p id="rfc.section.3.4.p.3">      Parameters are in the form of attribute/value pairs.</p>
    10241036      </div>
    1025       <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.36"></span><span id="rfc.iref.g.37"></span><span id="rfc.iref.g.38"></span>  <a href="#transfer.codings" class="smpl">parameter</a>               = <a href="#rule.parameter" class="smpl">attribute</a> "=" <a href="#rule.parameter" class="smpl">value</a>
     1037      <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.39"></span><span id="rfc.iref.g.40"></span><span id="rfc.iref.g.41"></span>  <a href="#transfer.codings" class="smpl">parameter</a>               = <a href="#rule.parameter" class="smpl">attribute</a> "=" <a href="#rule.parameter" class="smpl">value</a>
    10261038  <a href="#rule.parameter" class="smpl">attribute</a>               = <a href="#rule.token.separators" class="smpl">token</a>
    10271039  <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>
     
    10481060         necessary for the recipient to verify that it has received the full message.
    10491061      </p>
    1050       <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.39"></span><span id="rfc.iref.g.40"></span><span id="rfc.iref.g.41"></span><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><span id="rfc.iref.g.46"></span><span id="rfc.iref.g.47"></span>  <a href="#chunked.transfer.encoding" class="smpl">Chunked-Body</a>   = *<a href="#chunked.transfer.encoding" class="smpl">chunk</a>
     1062      <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.42"></span><span id="rfc.iref.g.43"></span><span id="rfc.iref.g.44"></span><span id="rfc.iref.g.45"></span><span id="rfc.iref.g.46"></span><span id="rfc.iref.g.47"></span><span id="rfc.iref.g.48"></span><span id="rfc.iref.g.49"></span><span id="rfc.iref.g.50"></span>  <a href="#chunked.transfer.encoding" class="smpl">Chunked-Body</a>   = *<a href="#chunked.transfer.encoding" class="smpl">chunk</a>
    10511063                   <a href="#chunked.transfer.encoding" class="smpl">last-chunk</a>
    10521064                   <a href="#chunked.transfer.encoding" class="smpl">trailer-part</a>
     
    10851097      </p>
    10861098      <p id="rfc.section.3.4.1.p.7">A process for decoding the "chunked" transfer-coding can be represented in pseudo-code as:</p>
    1087       <div id="rfc.figure.u.24"></div><pre class="text">    length := 0
     1099      <div id="rfc.figure.u.25"></div><pre class="text">    length := 0
    10881100    read chunk-size, chunk-extension (if any) and CRLF
    10891101    while (chunk-size &gt; 0) {
     
    11071119         space. By convention, the products are listed in order of their significance for identifying the application.
    11081120      </p>
    1109       <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.48"></span><span id="rfc.iref.g.49"></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>]
     1121      <div id="rfc.figure.u.26"></div><pre class="inline"><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></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>]
    11101122  <a href="#product.tokens" class="smpl">product-version</a> = <a href="#rule.token.separators" class="smpl">token</a>
    11111123</pre><p id="rfc.section.3.5.p.3">Examples:</p>
    1112       <div id="rfc.figure.u.26"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
     1124      <div id="rfc.figure.u.27"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
    11131125    Server: Apache/0.8.4
    11141126</pre><p id="rfc.section.3.5.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).
     
    11171129      <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>
    11181130      <p id="rfc.section.4.1.p.1">HTTP messages consist of requests from client to server and responses from server to client.</p>
    1119       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.50"></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
     1131      <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.53"></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
    11201132</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
    11211133         fields (also known as "headers"), an empty line (i.e., a line with nothing preceding the CRLF) indicating the end of the header
    11221134         fields, and possibly a message-body.
    11231135      </p>
    1124       <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></span>  <a href="#message.types" class="smpl">generic-message</a> = <a href="#message.types" class="smpl">start-line</a>
     1136      <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.54"></span><span id="rfc.iref.g.55"></span>  <a href="#message.types" class="smpl">generic-message</a> = <a href="#message.types" class="smpl">start-line</a>
    11251137                    *(<a href="#message.headers" class="smpl">message-header</a> <a href="#core.rules" class="smpl">CRLF</a>)
    11261138                    <a href="#core.rules" class="smpl">CRLF</a>
     
    11401152         forms.
    11411153      </p>
    1142       <div id="rfc.figure.u.29"></div><pre class="inline"><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>  <a href="#message.headers" class="smpl">message-header</a> = <a href="#message.headers" class="smpl">field-name</a> ":" [ <a href="#message.headers" class="smpl">field-value</a> ]
     1154      <div id="rfc.figure.u.30"></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>  <a href="#message.headers" class="smpl">message-header</a> = <a href="#message.headers" class="smpl">field-name</a> ":" [ <a href="#message.headers" class="smpl">field-value</a> ]
    11431155  <a href="#message.headers" class="smpl">field-name</a>     = <a href="#rule.token.separators" class="smpl">token</a>
    11441156  <a href="#message.headers" class="smpl">field-value</a>    = *( <a href="#message.headers" class="smpl">field-content</a> / <a href="#rule.LWS" class="smpl">LWS</a> )
     
    11711183         header field (<a href="#header.transfer-encoding" id="rfc.xref.header.transfer-encoding.2" title="Transfer-Encoding">Section&nbsp;8.7</a>).
    11721184      </p>
    1173       <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.57"></span>  <a href="#message.body" class="smpl">message-body</a> = <a href="#abnf.dependencies" class="smpl">entity-body</a>
     1185      <div id="rfc.figure.u.31"></div><pre class="inline"><span id="rfc.iref.g.60"></span>  <a href="#message.body" class="smpl">message-body</a> = <a href="#abnf.dependencies" class="smpl">entity-body</a>
    11741186               / &lt;entity-body encoded as per <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>&gt;
    11751187</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
     
    12391251         to the entity being transferred. These header fields apply only to the message being transmitted.
    12401252      </p>
    1241       <div id="rfc.figure.u.31"></div><pre class="inline"><span id="rfc.iref.g.58"></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 16.2</a>
     1253      <div id="rfc.figure.u.32"></div><pre class="inline"><span id="rfc.iref.g.61"></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 16.2</a>
    12421254                 / <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>
    12431255                 / <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>
     
    12561268         resource, the identifier of the resource, and the protocol version in use.
    12571269      </p>
    1258       <div id="rfc.figure.u.32"></div><pre class="inline"><span id="rfc.iref.g.59"></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>
     1270      <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.62"></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>
    12591271                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    12601272                   / <a href="#abnf.dependencies" class="smpl">request-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#request.header.fields" title="Request Header Fields">Section 4</a>
     
    12661278         elements are separated by SP characters. No CR or LF is allowed except in the final CRLF sequence.
    12671279      </p>
    1268       <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.60"></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-uri" class="smpl">Request-URI</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>
     1280      <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.63"></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-uri" class="smpl">Request-URI</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>
    12691281</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>
    12701282      <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-URI. The method is case-sensitive.</p>
    1271       <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.61"></span><span id="rfc.iref.g.62"></span>  <a href="#method" class="smpl">Method</a>         = <a href="#rule.token.separators" class="smpl">token</a>
     1283      <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.64"></span><span id="rfc.iref.g.65"></span>  <a href="#method" class="smpl">Method</a>         = <a href="#rule.token.separators" class="smpl">token</a>
    12721284</pre><h3 id="rfc.section.5.1.2"><a href="#rfc.section.5.1.2">5.1.2</a>&nbsp;<a id="request-uri" href="#request-uri">Request-URI</a></h3>
    12731285      <p id="rfc.section.5.1.2.p.1">The Request-URI is a Uniform Resource Identifier (<a href="#uri" title="Uniform Resource Identifiers">Section&nbsp;3.2</a>) and identifies the resource upon which to apply the request.
    12741286      </p>
    1275       <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.63"></span>  <a href="#request-uri" class="smpl">Request-URI</a>    = "*"
     1287      <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.66"></span>  <a href="#request-uri" class="smpl">Request-URI</a>    = "*"
    12761288                 / <a href="#general.syntax" class="smpl">absoluteURI</a>
    12771289                 / ( <a href="#general.syntax" class="smpl">path-absolute</a> [ "?" <a href="#general.syntax" class="smpl">query</a> ] )
     
    12811293         apply to a resource. One example would be
    12821294      </p>
    1283       <div id="rfc.figure.u.36"></div><pre class="text">    OPTIONS * HTTP/1.1
     1295      <div id="rfc.figure.u.37"></div><pre class="text">    OPTIONS * HTTP/1.1
    12841296</pre><p id="rfc.section.5.1.2.p.5">The absoluteURI 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,
    12851297         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 absoluteURI. In order to avoid request
     
    12871299         Request-Line would be:
    12881300      </p>
    1289       <div id="rfc.figure.u.37"></div><pre class="text">    GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1
     1301      <div id="rfc.figure.u.38"></div><pre class="text">    GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1
    12901302</pre><p id="rfc.section.5.1.2.p.7">To allow for transition to absoluteURIs in all requests in future versions of HTTP, all HTTP/1.1 servers <em class="bcp14">MUST</em> accept the absoluteURI form in requests, even though HTTP/1.1 clients will only generate them in requests to proxies.
    12911303      </p>
     
    12961308         server would create a TCP connection to port 80 of the host "www.example.org" and send the lines:
    12971309      </p>
    1298       <div id="rfc.figure.u.38"></div><pre class="text">    GET /pub/WWW/TheProject.html HTTP/1.1
     1310      <div id="rfc.figure.u.39"></div><pre class="text">    GET /pub/WWW/TheProject.html HTTP/1.1
    12991311    Host: www.example.org
    13001312</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
     
    13341346      <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="response" href="#response">Response</a></h1>
    13351347      <p id="rfc.section.6.p.1">After receiving and interpreting a request message, a server responds with an HTTP response message.</p>
    1336       <div id="rfc.figure.u.39"></div><pre class="inline"><span id="rfc.iref.g.64"></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>
     1348      <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.67"></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>
    13371349                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    13381350                   / <a href="#abnf.dependencies" class="smpl">response-header</a>        ; <a href="#Part2" id="rfc.xref.Part2.9"><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 6</a>
     
    13451357         CRLF sequence.
    13461358      </p>
    1347       <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.65"></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>
     1359      <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.68"></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>
    13481360</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>
    13491361      <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
     
    13621374         <li>5xx: Server Error - The server failed to fulfill an apparently valid request</li>
    13631375      </ul>
    1364       <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.66"></span><span id="rfc.iref.g.67"></span><span id="rfc.iref.g.68"></span>  <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a>    = 3<a href="#core.rules" class="smpl">DIGIT</a>
     1376      <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.69"></span><span id="rfc.iref.g.70"></span><span id="rfc.iref.g.71"></span>  <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a>    = 3<a href="#core.rules" class="smpl">DIGIT</a>
    13651377  <a href="#status.code.and.reason.phrase" class="smpl">Reason-Phrase</a>  = *&lt;<a href="#rule.TEXT" class="smpl">TEXT</a>, excluding <a href="#core.rules" class="smpl">CR</a>, <a href="#core.rules" class="smpl">LF</a>&gt;
    13661378</pre><h1 id="rfc.section.7"><a href="#rfc.section.7">7.</a>&nbsp;<a id="connections" href="#connections">Connections</a></h1>
     
    15531565      </p>
    15541566      <p id="rfc.section.8.1.p.2">The Connection header has the following grammar:</p>
    1555       <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.69"></span><span id="rfc.iref.g.70"></span>  <a href="#header.connection" class="smpl">Connection</a> = "Connection" ":" 1#(<a href="#header.connection" class="smpl">connection-token</a>)
     1567      <div id="rfc.figure.u.43"></div><pre class="inline"><span id="rfc.iref.g.72"></span><span id="rfc.iref.g.73"></span>  <a href="#header.connection" class="smpl">Connection</a> = "Connection" ":" 1#(<a href="#header.connection" class="smpl">connection-token</a>)
    15561568  <a href="#header.connection" class="smpl">connection-token</a>  = <a href="#rule.token.separators" class="smpl">token</a>
    15571569</pre><p id="rfc.section.8.1.p.4">HTTP/1.1 proxies <em class="bcp14">MUST</em> parse the Connection header field before a message is forwarded and, for each connection-token in this field, remove any header
     
    15651577         of the response. For example,
    15661578      </p>
    1567       <div id="rfc.figure.u.43"></div><pre class="text">    Connection: close
     1579      <div id="rfc.figure.u.44"></div><pre class="text">    Connection: close
    15681580</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.
    15691581      </p>
     
    15811593         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.
    15821594      </p>
    1583       <div id="rfc.figure.u.44"></div><pre class="inline"><span id="rfc.iref.g.71"></span>  <a href="#header.content-length" class="smpl">Content-Length</a>    = "Content-Length" ":" 1*<a href="#core.rules" class="smpl">DIGIT</a>
     1595      <div id="rfc.figure.u.45"></div><pre class="inline"><span id="rfc.iref.g.74"></span>  <a href="#header.content-length" class="smpl">Content-Length</a>    = "Content-Length" ":" 1*<a href="#core.rules" class="smpl">DIGIT</a>
    15841596</pre><p id="rfc.section.8.2.p.3">An example is</p>
    1585       <div id="rfc.figure.u.45"></div><pre class="text">    Content-Length: 3495
     1597      <div id="rfc.figure.u.46"></div><pre class="text">    Content-Length: 3495
    15861598</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>.
    15871599      </p>
     
    15981610         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;3.3.1</a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
    15991611      </p>
    1600       <div id="rfc.figure.u.46"></div><pre class="inline"><span id="rfc.iref.g.72"></span>  <a href="#header.date" class="smpl">Date</a>  = "Date" ":" <a href="#full.date" class="smpl">HTTP-date</a>
     1612      <div id="rfc.figure.u.47"></div><pre class="inline"><span id="rfc.iref.g.75"></span>  <a href="#header.date" class="smpl">Date</a>  = "Date" ":" <a href="#full.date" class="smpl">HTTP-date</a>
    16011613</pre><p id="rfc.section.8.3.p.3">An example is</p>
    1602       <div id="rfc.figure.u.47"></div><pre class="text">    Date: Tue, 15 Nov 1994 08:12:31 GMT
     1614      <div id="rfc.figure.u.48"></div><pre class="text">    Date: Tue, 15 Nov 1994 08:12:31 GMT
    16031615</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:
    16041616      </p>
     
    16361648         a single IP address.
    16371649      </p>
    1638       <div id="rfc.figure.u.48"></div><pre class="inline"><span id="rfc.iref.g.73"></span>  <a href="#header.host" class="smpl">Host</a> = "Host" ":" <a href="#general.syntax" class="smpl">uri-host</a> [ ":" <a href="#general.syntax" class="smpl">port</a> ] ; <a href="#http.url" title="http URL">Section&nbsp;3.2.2</a>
     1650      <div id="rfc.figure.u.49"></div><pre class="inline"><span id="rfc.iref.g.76"></span>  <a href="#header.host" class="smpl">Host</a> = "Host" ":" <a href="#general.syntax" class="smpl">uri-host</a> [ ":" <a href="#general.syntax" class="smpl">port</a> ] ; <a href="#http.url" title="http URL">Section&nbsp;3.2.2</a>
    16391651</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
    16401652         URL). For example, a request on the origin server for &lt;http://www.example.org/pub/WWW/&gt; would properly include:
    16411653      </p>
    1642       <div id="rfc.figure.u.49"></div><pre class="text">    GET /pub/WWW/ HTTP/1.1
     1654      <div id="rfc.figure.u.50"></div><pre class="text">    GET /pub/WWW/ HTTP/1.1
    16431655    Host: www.example.org
    16441656</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
     
    16551667         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;3.4</a>).
    16561668      </p>
    1657       <div id="rfc.figure.u.50"></div><pre class="inline"><span id="rfc.iref.g.74"></span><span id="rfc.iref.g.75"></span>  <a href="#header.te" class="smpl">TE</a>        = "TE" ":" #( <a href="#header.te" class="smpl">t-codings</a> )
     1669      <div id="rfc.figure.u.51"></div><pre class="inline"><span id="rfc.iref.g.77"></span><span id="rfc.iref.g.78"></span>  <a href="#header.te" class="smpl">TE</a>        = "TE" ":" #( <a href="#header.te" class="smpl">t-codings</a> )
    16581670  <a href="#header.te" class="smpl">t-codings</a> = "trailers" / ( <a href="#transfer.codings" class="smpl">transfer-extension</a> [ <a href="#abnf.dependencies" class="smpl">accept-params</a> ] )
    16591671</pre><p id="rfc.section.8.5.p.3">The presence of the keyword "trailers" indicates that the client is willing to accept trailer fields in a chunked transfer-coding,
     
    16611673      </p>
    16621674      <p id="rfc.section.8.5.p.4">Examples of its use are:</p>
    1663       <div id="rfc.figure.u.51"></div><pre class="text">    TE: deflate
     1675      <div id="rfc.figure.u.52"></div><pre class="text">    TE: deflate
    16641676    TE:
    16651677    TE: trailers, deflate;q=0.5
     
    16981710         with chunked transfer-coding.
    16991711      </p>
    1700       <div id="rfc.figure.u.52"></div><pre class="inline"><span id="rfc.iref.g.76"></span>  <a href="#header.trailer" class="smpl">Trailer</a>  = "Trailer" ":" 1#<a href="#message.headers" class="smpl">field-name</a>
     1712      <div id="rfc.figure.u.53"></div><pre class="inline"><span id="rfc.iref.g.79"></span>  <a href="#header.trailer" class="smpl">Trailer</a>  = "Trailer" ":" 1#<a href="#message.headers" class="smpl">field-name</a>
    17011713</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
    17021714         to know which header fields to expect in the trailer.
     
    17181730         transfer-coding is a property of the message, not of the entity.
    17191731      </p>
    1720       <div id="rfc.figure.u.53"></div><pre class="inline"><span id="rfc.iref.g.77"></span>  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>       = "Transfer-Encoding" ":" 1#<a href="#transfer.codings" class="smpl">transfer-coding</a>
     1732      <div id="rfc.figure.u.54"></div><pre class="inline"><span id="rfc.iref.g.80"></span>  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>       = "Transfer-Encoding" ":" 1#<a href="#transfer.codings" class="smpl">transfer-coding</a>
    17211733</pre><p id="rfc.section.8.7.p.3">Transfer-codings are defined in <a href="#transfer.codings" title="Transfer Codings">Section&nbsp;3.4</a>. An example is:
    17221734      </p>
    1723       <div id="rfc.figure.u.54"></div><pre class="text">  Transfer-Encoding: chunked
     1735      <div id="rfc.figure.u.55"></div><pre class="text">  Transfer-Encoding: chunked
    17241736</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.
    17251737      </p>
     
    17311743         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.
    17321744      </p>
    1733       <div id="rfc.figure.u.55"></div><pre class="inline"><span id="rfc.iref.g.78"></span>  <a href="#header.upgrade" class="smpl">Upgrade</a>        = "Upgrade" ":" 1#<a href="#product.tokens" class="smpl">product</a>
     1745      <div id="rfc.figure.u.56"></div><pre class="inline"><span id="rfc.iref.g.81"></span>  <a href="#header.upgrade" class="smpl">Upgrade</a>        = "Upgrade" ":" 1#<a href="#product.tokens" class="smpl">product</a>
    17341746</pre><p id="rfc.section.8.8.p.3">For example,</p>
    1735       <div id="rfc.figure.u.56"></div><pre class="text">    Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11
     1747      <div id="rfc.figure.u.57"></div><pre class="text">    Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11
    17361748</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
    17371749         protocol. It does so by allowing the client to advertise its desire to use another protocol, such as a later version of HTTP
     
    17621774         of all senders along the request/response chain.
    17631775      </p>
    1764       <div id="rfc.figure.u.57"></div><pre class="inline"><span id="rfc.iref.g.79"></span><span id="rfc.iref.g.80"></span><span id="rfc.iref.g.81"></span><span id="rfc.iref.g.82"></span><span id="rfc.iref.g.83"></span><span id="rfc.iref.g.84"></span>  <a href="#header.via" class="smpl">Via</a> =  "Via" ":" 1#( <a href="#header.via" class="smpl">received-protocol</a> <a href="#header.via" class="smpl">received-by</a> [ <a href="#rule.comment" class="smpl">comment</a> ] )
     1776      <div id="rfc.figure.u.58"></div><pre class="inline"><span id="rfc.iref.g.82"></span><span id="rfc.iref.g.83"></span><span id="rfc.iref.g.84"></span><span id="rfc.iref.g.85"></span><span id="rfc.iref.g.86"></span><span id="rfc.iref.g.87"></span>  <a href="#header.via" class="smpl">Via</a> =  "Via" ":" 1#( <a href="#header.via" class="smpl">received-protocol</a> <a href="#header.via" class="smpl">received-by</a> [ <a href="#rule.comment" class="smpl">comment</a> ] )
    17651777  <a href="#header.via" class="smpl">received-protocol</a> = [ <a href="#header.via" class="smpl">protocol-name</a> "/" ] <a href="#header.via" class="smpl">protocol-version</a>
    17661778  <a href="#header.via" class="smpl">protocol-name</a>     = <a href="#rule.token.separators" class="smpl">token</a>
     
    17851797         server at www.example.com. The request received by www.example.com would then have the following Via header field:
    17861798      </p>
    1787       <div id="rfc.figure.u.58"></div><pre class="text">    Via: 1.0 fred, 1.1 p.example.net (Apache/1.1)
     1799      <div id="rfc.figure.u.59"></div><pre class="text">    Via: 1.0 fred, 1.1 p.example.net (Apache/1.1)
    17881800</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.
    17891801      </p>
     
    17911803         For example,
    17921804      </p>
    1793       <div id="rfc.figure.u.59"></div><pre class="text">    Via: 1.0 ricky, 1.1 ethel, 1.1 fred, 1.0 lucy
     1805      <div id="rfc.figure.u.60"></div><pre class="text">    Via: 1.0 ricky, 1.1 ethel, 1.1 fred, 1.0 lucy
    17941806</pre><p id="rfc.section.8.9.p.12">could be collapsed to</p>
    1795       <div id="rfc.figure.u.60"></div><pre class="text">    Via: 1.0 ricky, 1.1 mertz, 1.0 lucy
     1807      <div id="rfc.figure.u.61"></div><pre class="text">    Via: 1.0 ricky, 1.1 mertz, 1.0 lucy
    17961808</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
    17971809         by pseudonyms. Applications <em class="bcp14">MUST NOT</em> combine entries which have different received-protocol values.
     
    25402552         </dd>
    25412553      </dl>
    2542       <p id="rfc.section.D.p.16"> <span id="rfc.iref.g.85"></span>  <dfn>gateway</dfn> 
     2554      <p id="rfc.section.D.p.16"> <span id="rfc.iref.g.88"></span>  <dfn>gateway</dfn> 
    25432555      </p>
    25442556      <dl class="empty">
     
    27172729         <li>Get rid of RFC822 dependency; use RFC5234 plus extensions instead.</li>
    27182730         <li>Only reference RFC 5234's core rules.</li>
     2731         <li>Introduce new ABNF rules for "bad" whitespace ("BWS"), optional whitespace ("OWS") and required whitespace ("RWS"), but do
     2732            not use them yet.
     2733         </li>
    27192734      </ul>
    27202735      <h1><a id="rfc.copyright" href="#rfc.copyright">Full Copyright Statement</a></h1>
     
    27712786            </li>
    27722787            <li class="indline0"><a id="rfc.index.G" href="#rfc.index.G"><b>G</b></a><ul class="ind">
    2773                   <li class="indline1">gateway&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85">D</a></li>
     2788                  <li class="indline1">gateway&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88">D</a></li>
    27742789                  <li class="indline1"><tt>Grammar</tt>&nbsp;&nbsp;
    27752790                     <ul class="ind">
    2776                         <li class="indline1"><tt>absoluteURI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>3.2.1</b></a></li>
    2777                         <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.26"><b>3.3.1</b></a></li>
    2778                         <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.4</b></a></li>
    2779                         <li class="indline1"><tt>authority</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>3.2.1</b></a></li>
    2780                         <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.4.1</b></a></li>
    2781                         <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>3.4.1</b></a></li>
    2782                         <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>3.4.1</b></a></li>
    2783                         <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>3.4.1</b></a></li>
    2784                         <li class="indline1"><tt>chunk-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.4.1</b></a></li>
    2785                         <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.4.1</b></a></li>
    2786                         <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.4.1</b></a></li>
    2787                         <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>2.2</b></a></li>
    2788                         <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>8.1</b></a></li>
    2789                         <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>8.1</b></a></li>
    2790                         <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>8.2</b></a></li>
    2791                         <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>2.2</b></a></li>
    2792                         <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>8.3</b></a></li>
    2793                         <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.27"><b>3.3.1</b></a></li>
    2794                         <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.28"><b>3.3.1</b></a></li>
    2795                         <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.29"><b>3.3.1</b></a></li>
    2796                         <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>6.1.1</b></a></li>
    2797                         <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>5.1.1</b></a></li>
    2798                         <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>4.2</b></a></li>
    2799                         <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>4.2</b></a></li>
    2800                         <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>4.2</b></a></li>
    2801                         <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>4.5</b></a></li>
    2802                         <li class="indline1"><tt>generic-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>4.1</b></a></li>
    2803                         <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>8.4</b></a></li>
    2804                         <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.22"><b>3.3.1</b></a></li>
    2805                         <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>4.1</b></a></li>
    2806                         <li class="indline1"><tt>HTTP-Prot-Name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>3.1</b></a></li>
    2807                         <li class="indline1"><tt>http-URL</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>3.2.2</b></a></li>
    2808                         <li class="indline1"><tt>HTTP-Version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>3.1</b></a></li>
    2809                         <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.4.1</b></a></li>
     2791                        <li class="indline1"><tt>absoluteURI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>3.2.1</b></a></li>
     2792                        <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.29"><b>3.3.1</b></a></li>
     2793                        <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.4</b></a></li>
     2794                        <li class="indline1"><tt>authority</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>3.2.1</b></a></li>
     2795                        <li class="indline1"><tt>BWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>2.2</b></a></li>
     2796                        <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.4.1</b></a></li>
     2797                        <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>3.4.1</b></a></li>
     2798                        <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>3.4.1</b></a></li>
     2799                        <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>3.4.1</b></a></li>
     2800                        <li class="indline1"><tt>chunk-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>3.4.1</b></a></li>
     2801                        <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>3.4.1</b></a></li>
     2802                        <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.4.1</b></a></li>
     2803                        <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>2.2</b></a></li>
     2804                        <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>8.1</b></a></li>
     2805                        <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>8.1</b></a></li>
     2806                        <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>8.2</b></a></li>
     2807                        <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>2.2</b></a></li>
     2808                        <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>8.3</b></a></li>
     2809                        <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.30"><b>3.3.1</b></a></li>
     2810                        <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.31"><b>3.3.1</b></a></li>
     2811                        <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.32"><b>3.3.1</b></a></li>
     2812                        <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>6.1.1</b></a></li>
     2813                        <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>5.1.1</b></a></li>
     2814                        <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>4.2</b></a></li>
     2815                        <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>4.2</b></a></li>
     2816                        <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>4.2</b></a></li>
     2817                        <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>4.5</b></a></li>
     2818                        <li class="indline1"><tt>generic-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>4.1</b></a></li>
     2819                        <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>8.4</b></a></li>
     2820                        <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.25"><b>3.3.1</b></a></li>
     2821                        <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>4.1</b></a></li>
     2822                        <li class="indline1"><tt>HTTP-Prot-Name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>3.1</b></a></li>
     2823                        <li class="indline1"><tt>http-URL</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.24"><b>3.2.2</b></a></li>
     2824                        <li class="indline1"><tt>HTTP-Version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>3.1</b></a></li>
     2825                        <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>3.4.1</b></a></li>
    28102826                        <li class="indline1"><tt>LWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.1"><b>2.2</b></a></li>
    2811                         <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>4.3</b></a></li>
    2812                         <li class="indline1"><tt>message-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>4.2</b></a></li>
    2813                         <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>5.1.1</b></a></li>
    2814                         <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>3.3.1</b></a></li>
    2815                         <li class="indline1"><tt>obsolete-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.24"><b>3.3.1</b></a></li>
    2816                         <li class="indline1"><tt>parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.4</b></a></li>
    2817                         <li class="indline1"><tt>path-absolute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>3.2.1</b></a></li>
    2818                         <li class="indline1"><tt>port</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>3.2.1</b></a></li>
    2819                         <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>3.5</b></a></li>
    2820                         <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>3.5</b></a></li>
    2821                         <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>8.9</b></a></li>
    2822                         <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>8.9</b></a></li>
    2823                         <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>8.9</b></a></li>
    2824                         <li class="indline1"><tt>qdtext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>2.2</b></a></li>
    2825                         <li class="indline1"><tt>query</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>3.2.1</b></a></li>
    2826                         <li class="indline1"><tt>quoted-pair</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>2.2</b></a></li>
    2827                         <li class="indline1"><tt>quoted-string</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>2.2</b></a></li>
    2828                         <li class="indline1"><tt>quoted-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>2.2</b></a></li>
    2829                         <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>6.1.1</b></a></li>
    2830                         <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>8.9</b></a></li>
    2831                         <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>8.9</b></a></li>
    2832                         <li class="indline1"><tt>relativeURI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>3.2.1</b></a></li>
    2833                         <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>5</b></a></li>
    2834                         <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>5.1</b></a></li>
    2835                         <li class="indline1"><tt>Request-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>5.1.2</b></a></li>
    2836                         <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>6</b></a></li>
    2837                         <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.23"><b>3.3.1</b></a></li>
    2838                         <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.25"><b>3.3.1</b></a></li>
    2839                         <li class="indline1"><tt>separators</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>2.2</b></a></li>
    2840                         <li class="indline1"><tt>start-line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>4.1</b></a></li>
    2841                         <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>6.1.1</b></a></li>
    2842                         <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>6.1</b></a></li>
    2843                         <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>8.5</b></a></li>
    2844                         <li class="indline1"><tt>tchar</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>2.2</b></a></li>
    2845                         <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>8.5</b></a></li>
    2846                         <li class="indline1"><tt>TEXT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>2.2</b></a></li>
    2847                         <li class="indline1"><tt>time</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.30"><b>3.3.1</b></a></li>
    2848                         <li class="indline1"><tt>token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>2.2</b></a></li>
    2849                         <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>8.6</b></a></li>
    2850                         <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>3.4.1</b></a></li>
    2851                         <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>3.4</b></a></li>
    2852                         <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>8.7</b></a></li>
    2853                         <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3.4</b></a></li>
    2854                         <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>8.8</b></a></li>
    2855                         <li class="indline1"><tt>uri-host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>3.2.1</b></a></li>
    2856                         <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.4</b></a></li>
    2857                         <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>8.9</b></a></li>
    2858                         <li class="indline1"><tt>weekday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.32"><b>3.3.1</b></a></li>
    2859                         <li class="indline1"><tt>wkday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.31"><b>3.3.1</b></a></li>
     2827                        <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>4.3</b></a></li>
     2828                        <li class="indline1"><tt>message-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>4.2</b></a></li>
     2829                        <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>5.1.1</b></a></li>
     2830                        <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.3.1</b></a></li>
     2831                        <li class="indline1"><tt>obsolete-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.27"><b>3.3.1</b></a></li>
     2832                        <li class="indline1"><tt>OWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>2.2</b></a></li>
     2833                        <li class="indline1"><tt>parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.4</b></a></li>
     2834                        <li class="indline1"><tt>path-absolute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>3.2.1</b></a></li>
     2835                        <li class="indline1"><tt>port</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>3.2.1</b></a></li>
     2836                        <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>3.5</b></a></li>
     2837                        <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>3.5</b></a></li>
     2838                        <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>8.9</b></a></li>
     2839                        <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85"><b>8.9</b></a></li>
     2840                        <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>8.9</b></a></li>
     2841                        <li class="indline1"><tt>qdtext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>2.2</b></a></li>
     2842                        <li class="indline1"><tt>query</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>3.2.1</b></a></li>
     2843                        <li class="indline1"><tt>quoted-pair</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>2.2</b></a></li>
     2844                        <li class="indline1"><tt>quoted-string</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>2.2</b></a></li>
     2845                        <li class="indline1"><tt>quoted-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>2.2</b></a></li>
     2846                        <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>6.1.1</b></a></li>
     2847                        <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86"><b>8.9</b></a></li>
     2848                        <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>8.9</b></a></li>
     2849                        <li class="indline1"><tt>relativeURI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.22"><b>3.2.1</b></a></li>
     2850                        <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>5</b></a></li>
     2851                        <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>5.1</b></a></li>
     2852                        <li class="indline1"><tt>Request-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>5.1.2</b></a></li>
     2853                        <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>6</b></a></li>
     2854                        <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.26"><b>3.3.1</b></a></li>
     2855                        <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.28"><b>3.3.1</b></a></li>
     2856                        <li class="indline1"><tt>RWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>2.2</b></a></li>
     2857                        <li class="indline1"><tt>separators</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>2.2</b></a></li>
     2858                        <li class="indline1"><tt>start-line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>4.1</b></a></li>
     2859                        <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>6.1.1</b></a></li>
     2860                        <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>6.1</b></a></li>
     2861                        <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>8.5</b></a></li>
     2862                        <li class="indline1"><tt>tchar</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>2.2</b></a></li>
     2863                        <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>8.5</b></a></li>
     2864                        <li class="indline1"><tt>TEXT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>2.2</b></a></li>
     2865                        <li class="indline1"><tt>time</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>3.3.1</b></a></li>
     2866                        <li class="indline1"><tt>token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>2.2</b></a></li>
     2867                        <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>8.6</b></a></li>
     2868                        <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>3.4.1</b></a></li>
     2869                        <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.4</b></a></li>
     2870                        <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>8.7</b></a></li>
     2871                        <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.4</b></a></li>
     2872                        <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>8.8</b></a></li>
     2873                        <li class="indline1"><tt>uri-host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.23"><b>3.2.1</b></a></li>
     2874                        <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.4</b></a></li>
     2875                        <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>8.9</b></a></li>
     2876                        <li class="indline1"><tt>weekday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3.3.1</b></a></li>
     2877                        <li class="indline1"><tt>wkday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>3.3.1</b></a></li>
    28602878                     </ul>
    28612879                  </li>
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