Ignore:
Timestamp:
Sep 25, 2009, 5:34:13 AM (10 years ago)
Author:
julian.reschke@…
Message:

disallow all control characters except HTAB in quoted-pair (see #194)

File:
1 edited

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

    r693 r696  
    400400      <meta name="DC.Creator" content="Reschke, J. F.">
    401401      <meta name="DC.Identifier" content="urn:ietf:id:draft-ietf-httpbis-p1-messaging-latest">
    402       <meta name="DC.Date.Issued" scheme="ISO8601" content="2009-09-11">
     402      <meta name="DC.Date.Issued" scheme="ISO8601" content="2009-09-25">
    403403      <meta name="DC.Relation.Replaces" content="urn:ietf:rfc:2616">
    404404      <meta name="DC.Description.Abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypertext information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 1 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 1 provides an overview of HTTP and its associated terminology, defines the &#34;http&#34; and &#34;https&#34; Uniform Resource Identifier (URI) schemes, defines the generic message syntax and parsing requirements for HTTP message frames, and describes general security concerns for implementations.">
    … …  
    437437         </tr>
    438438         <tr>
    439             <td class="header left">Expires: March 15, 2010</td>
     439            <td class="header left">Expires: March 29, 2010</td>
    440440            <td class="header right">H. Frystyk</td>
    441441         </tr>
    … …  
    486486         <tr>
    487487            <td class="header left"></td>
    488             <td class="header right">September 11, 2009</td>
     488            <td class="header right">September 25, 2009</td>
    489489         </tr>
    490490      </table>
    … …  
    510510      <p>The list of Internet-Draft Shadow Directories can be accessed at &lt;<a href="http://www.ietf.org/shadow.html">http://www.ietf.org/shadow.html</a>&gt;.
    511511      </p>
    512       <p>This Internet-Draft will expire in March 15, 2010.</p>
     512      <p>This Internet-Draft will expire in March 29, 2010.</p>
    513513      <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1>
    514514      <p>Copyright © 2009 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
    … …  
    816816  <a href="#rule.quoted-string" class="smpl">obs-text</a>       = %x80-FF
    817817</pre><div id="rule.quoted-pair">
    818          <p id="rfc.section.1.2.2.p.12">    The backslash character ("\") <em class="bcp14">MAY</em> be used as a single-character quoting mechanism only within quoted-string and comment constructs (<a href="#header.fields" title="Header Fields">Section&nbsp;3.2</a>).
     818         <p id="rfc.section.1.2.2.p.12">  The backslash character ("\") can be used as a single-character quoting mechanism only within quoted-string and comment constructs
     819            (<a href="#header.fields" title="Header Fields">Section&nbsp;3.2</a>).
    819820         </p>
    820821      </div>
    821       <div id="rfc.figure.u.8"></div><pre class="inline"><span id="rfc.iref.g.21"></span><span id="rfc.iref.g.22"></span>  <a href="#rule.quoted-pair" class="smpl">quoted-text</a>    = %x01-09 /
    822                    %x0B-0C /
    823                    %x0E-FF ; Characters excluding NUL, <a href="#core.rules" class="smpl">CR</a> and <a href="#core.rules" class="smpl">LF</a>
    824   <a href="#rule.quoted-pair" class="smpl">quoted-pair</a>    = "\" <a href="#rule.quoted-pair" class="smpl">quoted-text</a>
     822      <div id="rfc.figure.u.8"></div><pre class="inline"><span id="rfc.iref.g.21"></span>  <a href="#rule.quoted-pair" class="smpl">quoted-pair</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> )
    825823</pre><h3 id="rfc.section.1.2.3"><a href="#rfc.section.1.2.3">1.2.3</a>&nbsp;<a id="abnf.dependencies" href="#abnf.dependencies">ABNF Rules defined in other Parts of the Specification</a></h3>
    826824      <p id="rfc.section.1.2.3.p.1">The ABNF rules below are defined in other parts:</p>
    … …  
    913911         for the sake of security, annotation services, or shared caching.
    914912      </p>
    915       <p id="rfc.section.2.2.p.6"><span id="rfc.iref.g.23"></span><span id="rfc.iref.r.3"></span> A gateway (a.k.a., reverse proxy) is a receiving agent that acts as a layer above some other server(s) and translates the
     913      <p id="rfc.section.2.2.p.6"><span id="rfc.iref.g.22"></span><span id="rfc.iref.r.3"></span> A gateway (a.k.a., reverse proxy) is a receiving agent that acts as a layer above some other server(s) and translates the
    916914         received requests to the underlying server's protocol. Gateways are often used for load balancing or partitioning HTTP services
    917915         across multiple machines. Unlike a proxy, a gateway receives requests as if it were the origin server for the requested resource;
    … …  
    972970      </p>
    973971      <p id="rfc.section.2.5.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>
    974       <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.24"></span><span id="rfc.iref.g.25"></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>
     972      <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.23"></span><span id="rfc.iref.g.24"></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>
    975973  <a href="#http.version" class="smpl">HTTP-Prot-Name</a> = %x48.54.54.50 ; "HTTP", case-sensitive
    976974</pre><p id="rfc.section.2.5.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.
    … …  
    1001999         "path-absolute", "query", and "authority" from <a href="#RFC3986" id="rfc.xref.RFC3986.4"><cite title="Uniform Resource Identifier (URI): Generic Syntax">[RFC3986]</cite></a>. In addition, we define a partial-URI rule for protocol elements that allow a relative URI without a fragment.
    10021000      </p>
    1003       <div id="rfc.figure.u.18"></div><pre class="inline"><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>  <a href="#uri" class="smpl">URI</a>           = &lt;URI, defined in <a href="#RFC3986" id="rfc.xref.RFC3986.5"><cite title="Uniform Resource Identifier (URI): Generic Syntax">[RFC3986]</cite></a>, <a href="http://tools.ietf.org/html/rfc3986#section-3">Section 3</a>&gt;
     1001      <div id="rfc.figure.u.18"></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>  <a href="#uri" class="smpl">URI</a>           = &lt;URI, defined in <a href="#RFC3986" id="rfc.xref.RFC3986.5"><cite title="Uniform Resource Identifier (URI): Generic Syntax">[RFC3986]</cite></a>, <a href="http://tools.ietf.org/html/rfc3986#section-3">Section 3</a>&gt;
    10041002  <a href="#uri" class="smpl">URI-reference</a> = &lt;URI-reference, defined in <a href="#RFC3986" id="rfc.xref.RFC3986.6"><cite title="Uniform Resource Identifier (URI): Generic Syntax">[RFC3986]</cite></a>, <a href="http://tools.ietf.org/html/rfc3986#section-4.1">Section 4.1</a>&gt;
    10051003  <a href="#uri" class="smpl">absolute-URI</a>  = &lt;absolute-URI, defined in <a href="#RFC3986" id="rfc.xref.RFC3986.7"><cite title="Uniform Resource Identifier (URI): Generic Syntax">[RFC3986]</cite></a>, <a href="http://tools.ietf.org/html/rfc3986#section-4.3">Section 4.3</a>&gt;
    … …  
    10261024         data corresponding to a resource for which that server might provide an HTTP interface.
    10271025      </p>
    1028       <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.33"></span>  <a href="#http.uri" class="smpl">http-URI</a> = "http:" "//" <a href="#uri" class="smpl">authority</a> <a href="#uri" class="smpl">path-abempty</a> [ "?" <a href="#uri" class="smpl">query</a> ]
     1026      <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.32"></span>  <a href="#http.uri" class="smpl">http-URI</a> = "http:" "//" <a href="#uri" class="smpl">authority</a> <a href="#uri" class="smpl">path-abempty</a> [ "?" <a href="#uri" class="smpl">query</a> ]
    10291027</pre><p id="rfc.section.2.6.1.p.3">The host identifier within an <a href="#uri" class="smpl">authority</a> component is defined in <a href="#RFC3986" id="rfc.xref.RFC3986.15"><cite title="Uniform Resource Identifier (URI): Generic Syntax">[RFC3986]</cite></a>, <a href="http://tools.ietf.org/html/rfc3986#section-3.2.2">Section 3.2.2</a>. If host is provided as an IP literal or IPv4 address, then the HTTP server is any listener on the indicated TCP port at
    10301028         that IP address. If host is a registered name, then that name is considered an indirect identifier and the recipient might
    … …  
    10551053         port subcomponent is empty or not given.
    10561054      </p>
    1057       <div id="rfc.figure.u.20"></div><pre class="inline"><span id="rfc.iref.g.34"></span>  <a href="#https.uri" class="smpl">https-URI</a> = "https:" "//" <a href="#uri" class="smpl">authority</a> <a href="#uri" class="smpl">path-abempty</a> [ "?" <a href="#uri" class="smpl">query</a> ]
     1055      <div id="rfc.figure.u.20"></div><pre class="inline"><span id="rfc.iref.g.33"></span>  <a href="#https.uri" class="smpl">https-URI</a> = "https:" "//" <a href="#uri" class="smpl">authority</a> <a href="#uri" class="smpl">path-abempty</a> [ "?" <a href="#uri" class="smpl">query</a> ]
    10581056</pre><p id="rfc.section.2.6.2.p.3">The primary difference between the "http" and "https" schemes is that interaction with the latter is required to be secured
    10591057         for privacy through the use of strong encryption. The URI cannot be sent in a request until the connection is secure. Likewise,
    … …  
    10931091         or invalid request method) and clients are implemented to only expect a response.
    10941092      </p>
    1095       <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.35"></span>  <a href="#http.message" class="smpl">HTTP-message</a>    = <a href="#http.message" class="smpl">start-line</a>
     1093      <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.34"></span>  <a href="#http.message" class="smpl">HTTP-message</a>    = <a href="#http.message" class="smpl">start-line</a>
    10961094                    *( <a href="#header.fields" class="smpl">header-field</a> <a href="#core.rules" class="smpl">CRLF</a> )
    10971095                    <a href="#core.rules" class="smpl">CRLF</a>
    … …  
    11211119         value.
    11221120      </p>
    1123       <div id="rfc.figure.u.23"></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><span id="rfc.iref.g.39"></span>  <a href="#header.fields" class="smpl">header-field</a>   = <a href="#header.fields" class="smpl">field-name</a> ":" <a href="#rule.whitespace" class="smpl">OWS</a> [ <a href="#header.fields" class="smpl">field-value</a> ] <a href="#rule.whitespace" class="smpl">OWS</a>
     1121      <div id="rfc.figure.u.23"></div><pre class="inline"><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>  <a href="#header.fields" class="smpl">header-field</a>   = <a href="#header.fields" class="smpl">field-name</a> ":" <a href="#rule.whitespace" class="smpl">OWS</a> [ <a href="#header.fields" class="smpl">field-value</a> ] <a href="#rule.whitespace" class="smpl">OWS</a>
    11241122  <a href="#header.fields" class="smpl">field-name</a>     = <a href="#rule.token.separators" class="smpl">token</a>
    11251123  <a href="#header.fields" class="smpl">field-value</a>    = *( <a href="#header.fields" class="smpl">field-content</a> / <a href="#rule.whitespace" class="smpl">OWS</a> )
    … …  
    11611159         </p>
    11621160      </div>
    1163       <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.40"></span><span id="rfc.iref.g.41"></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> ) ")"
     1161      <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.39"></span><span id="rfc.iref.g.40"></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> ) ")"
    11641162  <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>
    11651163                 ; <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>
    … …  
    11691167         header field (<a href="#header.transfer-encoding" id="rfc.xref.header.transfer-encoding.1" title="Transfer-Encoding">Section&nbsp;9.7</a>).
    11701168      </p>
    1171       <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.42"></span>  <a href="#message.body" class="smpl">message-body</a> = <a href="#abnf.dependencies" class="smpl">entity-body</a>
     1169      <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.41"></span>  <a href="#message.body" class="smpl">message-body</a> = <a href="#abnf.dependencies" class="smpl">entity-body</a>
    11721170               / &lt;entity-body encoded as per <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>&gt;
    11731171</pre><p id="rfc.section.3.3.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
    … …  
    12361234         to the entity being transferred. These header fields apply only to the message being transmitted.
    12371235      </p>
    1238       <div id="rfc.figure.u.26"></div><pre class="inline"><span id="rfc.iref.g.43"></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>
     1236      <div id="rfc.figure.u.26"></div><pre class="inline"><span id="rfc.iref.g.42"></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>
    12391237                 / <a href="#header.connection" class="smpl">Connection</a>               ; <a href="#header.connection" id="rfc.xref.header.connection.1" title="Connection">Section&nbsp;9.1</a>
    12401238                 / <a href="#header.date" class="smpl">Date</a>                     ; <a href="#header.date" id="rfc.xref.header.date.1" title="Date">Section&nbsp;9.3</a>
    … …  
    12531251         resource, the identifier of the resource, and the protocol version in use.
    12541252      </p>
    1255       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.44"></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;4.1</a>
     1253      <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.43"></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;4.1</a>
    12561254                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;3.5</a>
    12571255                   / <a href="#abnf.dependencies" class="smpl">request-header</a>         ; <a href="#Part2" id="rfc.xref.Part2.3"><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>
    … …  
    12631261         The elements are separated by SP characters. No CR or LF is allowed except in the final CRLF sequence.
    12641262      </p>
    1265       <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.45"></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>
     1263      <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.44"></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>
    12661264</pre><h3 id="rfc.section.4.1.1"><a href="#rfc.section.4.1.1">4.1.1</a>&nbsp;<a id="method" href="#method">Method</a></h3>
    12671265      <p id="rfc.section.4.1.1.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>
    1268       <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.46"></span><span id="rfc.iref.g.47"></span>  <a href="#method" class="smpl">Method</a>         = <a href="#rule.token.separators" class="smpl">token</a>
     1266      <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.45"></span><span id="rfc.iref.g.46"></span>  <a href="#method" class="smpl">Method</a>         = <a href="#rule.token.separators" class="smpl">token</a>
    12691267</pre><h3 id="rfc.section.4.1.2"><a href="#rfc.section.4.1.2">4.1.2</a>&nbsp;<a id="request-target" href="#request-target">request-target</a></h3>
    12701268      <p id="rfc.section.4.1.2.p.1">The request-target identifies the resource upon which to apply the request.</p>
    1271       <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.48"></span>  <a href="#request-target" class="smpl">request-target</a> = "*"
     1269      <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.47"></span>  <a href="#request-target" class="smpl">request-target</a> = "*"
    12721270                 / <a href="#uri" class="smpl">absolute-URI</a>
    12731271                 / ( <a href="#uri" class="smpl">path-absolute</a> [ "?" <a href="#uri" class="smpl">query</a> ] )
    … …  
    13451343      <h1 id="rfc.section.5"><a href="#rfc.section.5">5.</a>&nbsp;<a id="response" href="#response">Response</a></h1>
    13461344      <p id="rfc.section.5.p.1">After receiving and interpreting a request message, a server responds with an HTTP response message.</p>
    1347       <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.49"></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;5.1</a>
     1345      <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.48"></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;5.1</a>
    13481346                  *(( <a href="#general.header.fields" class="smpl">general-header</a>        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;3.5</a>
    13491347                   / <a href="#abnf.dependencies" class="smpl">response-header</a>        ; <a href="#Part2" id="rfc.xref.Part2.6"><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>
    … …  
    13561354         CRLF sequence.
    13571355      </p>
    1358       <div id="rfc.figure.u.37"></div><pre class="inline"><span id="rfc.iref.g.50"></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>
     1356      <div id="rfc.figure.u.37"></div><pre class="inline"><span id="rfc.iref.g.49"></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>
    13591357</pre><h3 id="rfc.section.5.1.1"><a href="#rfc.section.5.1.1">5.1.1</a>&nbsp;<a id="status.code.and.reason.phrase" href="#status.code.and.reason.phrase">Status Code and Reason Phrase</a></h3>
    13601358      <p id="rfc.section.5.1.1.p.1">The Status-Code element is a 3-digit integer result code of the attempt to understand and satisfy the request. These codes
    … …  
    13731371         <li>5xx: Server Error - The server failed to fulfill an apparently valid request</li>
    13741372      </ul>
    1375       <div id="rfc.figure.u.38"></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>  <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a>    = 3<a href="#core.rules" class="smpl">DIGIT</a>
     1373      <div id="rfc.figure.u.38"></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>  <a href="#status.code.and.reason.phrase" class="smpl">Status-Code</a>    = 3<a href="#core.rules" class="smpl">DIGIT</a>
    13761374  <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> )
    13771375</pre><h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="protocol.parameters" href="#protocol.parameters">Protocol Parameters</a></h1>
    … …  
    13881386         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.
    13891387      </p>
    1390       <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.54"></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>
     1388      <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.53"></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>
    13911389</pre><div id="preferred.date.format">
    13921390         <p id="rfc.section.6.1.p.6">                    Preferred format:</p>
    13931391      </div>
    1394       <div id="rfc.figure.u.41"></div><pre class="inline"><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><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><span id="rfc.iref.g.65"></span><span id="rfc.iref.g.66"></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>
     1392      <div id="rfc.figure.u.41"></div><pre class="inline"><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><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><span id="rfc.iref.g.65"></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>
    13951393
    13961394  <a href="#preferred.date.format" class="smpl">day-name</a>     = %x4D.6F.6E ; "Mon", case-sensitive
    … …  
    14331431         <p id="rfc.section.6.1.p.9">                Obsolete formats:</p>
    14341432      </div>
    1435       <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.67"></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>
    1436 </pre><div id="rfc.figure.u.43"></div><pre class="inline"><span id="rfc.iref.g.68"></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>
     1433      <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.66"></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>
     1434</pre><div id="rfc.figure.u.43"></div><pre class="inline"><span id="rfc.iref.g.67"></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>
    14371435  <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>
    14381436                 ; day-month-year (e.g., 02-Jun-82)
    … …  
    14451443         / %x53.61.74.75.72.64.61.79 ; "Saturday", case-sensitive
    14461444         / %x53.75.6E.64.61.79 ; "Sunday", case-sensitive
    1447 </pre><div id="rfc.figure.u.44"></div><pre class="inline"><span id="rfc.iref.g.69"></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>
     1445</pre><div id="rfc.figure.u.44"></div><pre class="inline"><span id="rfc.iref.g.68"></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>
    14481446  <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> ))
    14491447                 ; month day (e.g., Jun  2)
    … …  
    14631461         is a property of the message, not of the original entity.
    14641462      </p>
    1465       <div id="rfc.figure.u.45"></div><pre class="inline"><span id="rfc.iref.g.70"></span><span id="rfc.iref.g.71"></span>  <a href="#transfer.codings" class="smpl">transfer-coding</a>         = "chunked" ; <a href="#chunked.encoding" title="Chunked Transfer Coding">Section&nbsp;6.2.1</a>
     1463      <div id="rfc.figure.u.45"></div><pre class="inline"><span id="rfc.iref.g.69"></span><span id="rfc.iref.g.70"></span>  <a href="#transfer.codings" class="smpl">transfer-coding</a>         = "chunked" ; <a href="#chunked.encoding" title="Chunked Transfer Coding">Section&nbsp;6.2.1</a>
    14661464                          / "compress" ; <a href="#compress.coding" title="Compress Coding">Section&nbsp;6.2.2.1</a>
    14671465                          / "deflate" ; <a href="#deflate.coding" title="Deflate Coding">Section&nbsp;6.2.2.2</a>
    … …  
    14721470         <p id="rfc.section.6.2.p.3">      Parameters are in the form of attribute/value pairs.</p>
    14731471      </div>
    1474       <div id="rfc.figure.u.46"></div><pre class="inline"><span id="rfc.iref.g.72"></span><span id="rfc.iref.g.73"></span><span id="rfc.iref.g.74"></span><span id="rfc.iref.g.75"></span><span id="rfc.iref.g.76"></span>  <a href="#rule.parameter" class="smpl">transfer-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>
     1472      <div id="rfc.figure.u.46"></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><span id="rfc.iref.g.75"></span>  <a href="#rule.parameter" class="smpl">transfer-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>
    14751473  <a href="#rule.parameter" class="smpl">attribute</a>               = <a href="#rule.token.separators" class="smpl">token</a>
    14761474  <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>
    … …  
    14941492         necessary for the recipient to verify that it has received the full message.
    14951493      </p>
    1496       <div id="rfc.figure.u.47"></div><pre class="inline"><span id="rfc.iref.g.77"></span><span id="rfc.iref.g.78"></span><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><span id="rfc.iref.g.85"></span>  <a href="#chunked.encoding" class="smpl">Chunked-Body</a>   = *<a href="#chunked.encoding" class="smpl">chunk</a>
     1494      <div id="rfc.figure.u.47"></div><pre class="inline"><span id="rfc.iref.g.76"></span><span id="rfc.iref.g.77"></span><span id="rfc.iref.g.78"></span><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="#chunked.encoding" class="smpl">Chunked-Body</a>   = *<a href="#chunked.encoding" class="smpl">chunk</a>
    14971495                   <a href="#chunked.encoding" class="smpl">last-chunk</a>
    14981496                   <a href="#chunked.encoding" class="smpl">trailer-part</a>
    … …  
    15711569      <p id="rfc.section.6.2.2.2.p.1">The "zlib" format is defined in <a href="#RFC1950" id="rfc.xref.RFC1950.1"><cite title="ZLIB Compressed Data Format Specification version 3.3">[RFC1950]</cite></a> in combination with the "deflate" compression mechanism described in <a href="#RFC1951" id="rfc.xref.RFC1951.1"><cite title="DEFLATE Compressed Data Format Specification version 1.3">[RFC1951]</cite></a>.
    15721570      </p>
    1573       <div id="rfc.iref.g.86"></div>
     1571      <div id="rfc.iref.g.85"></div>
    15741572      <div id="rfc.iref.c.10"></div>
    15751573      <h4 id="rfc.section.6.2.2.3"><a href="#rfc.section.6.2.2.3">6.2.2.3</a>&nbsp;<a id="gzip.coding" href="#gzip.coding">Gzip Coding</a></h4>
    … …  
    15951593         By convention, the products are listed in order of their significance for identifying the application.
    15961594      </p>
    1597       <div id="rfc.figure.u.49"></div><pre class="inline"><span id="rfc.iref.g.87"></span><span id="rfc.iref.g.88"></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>]
     1595      <div id="rfc.figure.u.49"></div><pre class="inline"><span id="rfc.iref.g.86"></span><span id="rfc.iref.g.87"></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>]
    15981596  <a href="#product.tokens" class="smpl">product-version</a> = <a href="#rule.token.separators" class="smpl">token</a>
    15991597</pre><p id="rfc.section.6.3.p.3">Examples:</p>
    … …  
    16071605         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.
    16081606      </p>
    1609       <div id="rfc.figure.u.51"></div><pre class="inline"><span id="rfc.iref.g.89"></span>  <a href="#quality.values" class="smpl">qvalue</a>         = ( "0" [ "." 0*3<a href="#core.rules" class="smpl">DIGIT</a> ] )
     1607      <div id="rfc.figure.u.51"></div><pre class="inline"><span id="rfc.iref.g.88"></span>  <a href="#quality.values" class="smpl">qvalue</a>         = ( "0" [ "." 0*3<a href="#core.rules" class="smpl">DIGIT</a> ] )
    16101608                 / ( "1" [ "." 0*3("0") ] )
    16111609</pre><div class="note">
    … …  
    18191817      </p>
    18201818      <p id="rfc.section.9.1.p.2">The Connection header's value has the following grammar:</p>
    1821       <div id="rfc.figure.u.52"></div><pre class="inline"><span id="rfc.iref.g.90"></span><span id="rfc.iref.g.91"></span><span id="rfc.iref.g.92"></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>
     1819      <div id="rfc.figure.u.52"></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>
    18221820  <a href="#header.connection" class="smpl">Connection-v</a>     = 1#<a href="#header.connection" class="smpl">connection-token</a>
    18231821  <a href="#header.connection" class="smpl">connection-token</a> = <a href="#rule.token.separators" class="smpl">token</a>
    … …  
    18481846         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.
    18491847      </p>
    1850       <div id="rfc.figure.u.54"></div><pre class="inline"><span id="rfc.iref.g.93"></span><span id="rfc.iref.g.94"></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>
     1848      <div id="rfc.figure.u.54"></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>
    18511849  <a href="#header.content-length" class="smpl">Content-Length-v</a> = 1*<a href="#core.rules" class="smpl">DIGIT</a>
    18521850</pre><p id="rfc.section.9.2.p.3">An example is</p>
    … …  
    18661864         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="#date.time.formats.full.date" title="Date/Time Formats: Full Date">Section&nbsp;6.1</a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
    18671865      </p>
    1868       <div id="rfc.figure.u.56"></div><pre class="inline"><span id="rfc.iref.g.95"></span><span id="rfc.iref.g.96"></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>
     1866      <div id="rfc.figure.u.56"></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>
    18691867  <a href="#header.date" class="smpl">Date-v</a> = <a href="#date.time.formats.full.date" class="smpl">HTTP-date</a>
    18701868</pre><p id="rfc.section.9.3.p.3">An example is</p>
    … …  
    19051903         a single IP address.
    19061904      </p>
    1907       <div id="rfc.figure.u.58"></div><pre class="inline"><span id="rfc.iref.g.97"></span><span id="rfc.iref.g.98"></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>
     1905      <div id="rfc.figure.u.58"></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>
    19081906  <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;2.6.1</a>
    19091907</pre><p id="rfc.section.9.4.p.3">A "host" without any trailing port information implies the default port for the service requested (e.g., "80" for an HTTP
    … …  
    19251923         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;6.2</a>).
    19261924      </p>
    1927       <div id="rfc.figure.u.60"></div><pre class="inline"><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><span id="rfc.iref.g.103"></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>
     1925      <div id="rfc.figure.u.60"></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>
    19281926  <a href="#header.te" class="smpl">TE-v</a>      = #<a href="#header.te" class="smpl">t-codings</a>
    19291927  <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> ] )
    … …  
    19711969         chunked transfer-coding.
    19721970      </p>
    1973       <div id="rfc.figure.u.62"></div><pre class="inline"><span id="rfc.iref.g.104"></span><span id="rfc.iref.g.105"></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>
     1971      <div id="rfc.figure.u.62"></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>
    19741972  <a href="#header.trailer" class="smpl">Trailer-v</a> = 1#<a href="#header.fields" class="smpl">field-name</a>
    19751973</pre><p id="rfc.section.9.6.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
    … …  
    19921990         transfer-coding is a property of the message, not of the entity.
    19931991      </p>
    1994       <div id="rfc.figure.u.63"></div><pre class="inline"><span id="rfc.iref.g.106"></span><span id="rfc.iref.g.107"></span>  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding</a>   = "Transfer-Encoding" ":" <a href="#rule.whitespace" class="smpl">OWS</a>
     1992      <div id="rfc.figure.u.63"></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>
    19951993                        <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding-v</a>
    19961994  <a href="#header.transfer-encoding" class="smpl">Transfer-Encoding-v</a> = 1#<a href="#transfer.codings" class="smpl">transfer-coding</a>
    … …  
    20072005         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.
    20082006      </p>
    2009       <div id="rfc.figure.u.65"></div><pre class="inline"><span id="rfc.iref.g.108"></span><span id="rfc.iref.g.109"></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>
     2007      <div id="rfc.figure.u.65"></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>
    20102008  <a href="#header.upgrade" class="smpl">Upgrade-v</a> = 1#<a href="#product.tokens" class="smpl">product</a>
    20112009</pre><p id="rfc.section.9.8.p.3">For example,</p>
    … …  
    20632061         of all senders along the request/response chain.
    20642062      </p>
    2065       <div id="rfc.figure.u.67"></div><pre class="inline"><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><span id="rfc.iref.g.116"></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>
     2063      <div id="rfc.figure.u.67"></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>
    20662064  <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>
    20672065                          [ <a href="#rule.whitespace" class="smpl">RWS</a> <a href="#rule.comment" class="smpl">comment</a> ] )
    … …  
    27932791      <p id="rfc.section.B.4.p.2">Rules about implicit linear whitespace between certain grammar productions have been removed; now it's only allowed when specifically
    27942792         pointed out in the ABNF. The NUL character is no longer allowed in comment and quoted-string text. The quoted-pair rule no
    2795          longer allows escaping NUL, CR or LF. Non-ASCII content in header fields and reason phrase has been obsoleted and made opaque
    2796          (the TEXT rule was removed) (<a href="#basic.rules" title="Basic Rules">Section&nbsp;1.2.2</a>)
     2793         longer allows escaping control characters other than HTAB. Non-ASCII content in header fields and reason phrase has been obsoleted
     2794         and made opaque (the TEXT rule was removed) (<a href="#basic.rules" title="Basic Rules">Section&nbsp;1.2.2</a>)
    27972795      </p>
    27982796      <p id="rfc.section.B.4.p.3">Clarify that HTTP-Version is case sensitive. (<a href="#http.version" title="HTTP Version">Section&nbsp;2.5</a>)
    … …  
    29572955 / obs-text
    29582956<a href="#uri" class="smpl">query</a> = &lt;query, defined in [RFC3986], Section 3.4&gt;
    2959 <a href="#rule.quoted-pair" class="smpl">quoted-pair</a> = "\" quoted-text
     2957<a href="#rule.quoted-pair" class="smpl">quoted-pair</a> = "\" ( WSP / VCHAR / obs-text )
    29602958<a href="#rule.quoted-string" class="smpl">quoted-string</a> = DQUOTE *( qdtext / quoted-pair ) DQUOTE
    2961 <a href="#rule.quoted-pair" class="smpl">quoted-text</a> = %x01-09 / %x0B-0C / %x0E-FF
    29622959<a href="#quality.values" class="smpl">qvalue</a> = ( "0" [ "." *3DIGIT ] ) / ( "1" [ "." *3"0" ] )
    29632960
    … …  
    32123209         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/189">http://tools.ietf.org/wg/httpbis/trac/ticket/189</a>&gt;: "move definitions of gzip/deflate/compress to part 1"
    32133210         </li>
     3211         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/194">http://tools.ietf.org/wg/httpbis/trac/ticket/194</a>&gt;: "disallow control characters in quoted-pair"
     3212         </li>
    32143213      </ul>
    32153214      <p id="rfc.section.D.9.p.2">Partly resolved issues: </p>
    32163215      <ul>
    32173216         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/148">http://tools.ietf.org/wg/httpbis/trac/ticket/148</a>&gt;: "update IANA requirements wrt Transfer-Coding values" (add the IANA Considerations subsection)
     3217         </li>
     3218         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/194">http://tools.ietf.org/wg/httpbis/trac/ticket/194</a>&gt;: "disallow control characters in quoted-pair"
    32183219         </li>
    32193220      </ul>
    … …  
    32573258            </li>
    32583259            <li class="indline0"><a id="rfc.index.G" href="#rfc.index.G"><b>G</b></a><ul class="ind">
    3259                   <li class="indline1">gateway&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.23">2.2</a></li>
     3260                  <li class="indline1">gateway&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.22">2.2</a></li>
    32603261                  <li class="indline1"><tt>Grammar</tt>&nbsp;&nbsp;
    32613262                     <ul class="ind">
    3262                         <li class="indline1"><tt>absolute-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.27"><b>2.6</b></a></li>
     3263                        <li class="indline1"><tt>absolute-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.26"><b>2.6</b></a></li>
    32633264                        <li class="indline1">ALPHA&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.1"><b>1.2</b></a></li>
    3264                         <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>6.1</b></a></li>
    3265                         <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>6.2</b></a></li>
    3266                         <li class="indline1"><tt>authority</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.28"><b>2.6</b></a></li>
     3265                        <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>6.1</b></a></li>
     3266                        <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>6.2</b></a></li>
     3267                        <li class="indline1"><tt>authority</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.27"><b>2.6</b></a></li>
    32673268                        <li class="indline1"><tt>BWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>1.2.2</b></a></li>
    3268                         <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>6.2.1</b></a></li>
    3269                         <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>6.2.1</b></a></li>
    3270                         <li class="indline1"><tt>chunk-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>6.2.1</b></a></li>
    3271                         <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>6.2.1</b></a></li>
    3272                         <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>6.2.1</b></a></li>
    3273                         <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>6.2.1</b></a></li>
    3274                         <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>6.2.1</b></a></li>
    3275                         <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.2</b></a></li>
    3276                         <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.90"><b>9.1</b></a></li>
    3277                         <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.92"><b>9.1</b></a></li>
    3278                         <li class="indline1"><tt>Connection-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.91"><b>9.1</b></a></li>
    3279                         <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.93"><b>9.2</b></a></li>
    3280                         <li class="indline1"><tt>Content-Length-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.94"><b>9.2</b></a></li>
     3269                        <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>6.2.1</b></a></li>
     3270                        <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>6.2.1</b></a></li>
     3271                        <li class="indline1"><tt>chunk-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>6.2.1</b></a></li>
     3272                        <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>6.2.1</b></a></li>
     3273                        <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>6.2.1</b></a></li>
     3274                        <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>6.2.1</b></a></li>
     3275                        <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>6.2.1</b></a></li>
     3276                        <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.2</b></a></li>
     3277                        <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.89"><b>9.1</b></a></li>
     3278                        <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.91"><b>9.1</b></a></li>
     3279                        <li class="indline1"><tt>Connection-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.90"><b>9.1</b></a></li>
     3280                        <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.92"><b>9.2</b></a></li>
     3281                        <li class="indline1"><tt>Content-Length-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.93"><b>9.2</b></a></li>
    32813282                        <li class="indline1">CR&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>1.2</b></a></li>
    32823283                        <li class="indline1">CRLF&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>1.2</b></a></li>
    3283                         <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.2</b></a></li>
     3284                        <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.2</b></a></li>
    32843285                        <li class="indline1">CTL&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>1.2</b></a></li>
    3285                         <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.95"><b>9.3</b></a></li>
    3286                         <li class="indline1"><tt>Date-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.96"><b>9.3</b></a></li>
    3287                         <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>6.1</b></a></li>
    3288                         <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>6.2</b></a></li>
    3289                         <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>6.2</b></a></li>
    3290                         <li class="indline1"><tt>day</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>6.1</b></a></li>
    3291                         <li class="indline1"><tt>day-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>6.1</b></a></li>
    3292                         <li class="indline1"><tt>day-name-l</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>6.1</b></a></li>
     3286                        <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.94"><b>9.3</b></a></li>
     3287                        <li class="indline1"><tt>Date-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.95"><b>9.3</b></a></li>
     3288                        <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>6.1</b></a></li>
     3289                        <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>6.2</b></a></li>
     3290                        <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>6.2</b></a></li>
     3291                        <li class="indline1"><tt>day</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>6.1</b></a></li>
     3292                        <li class="indline1"><tt>day-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>6.1</b></a></li>
     3293                        <li class="indline1"><tt>day-name-l</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>6.1</b></a></li>
    32933294                        <li class="indline1">DIGIT&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>1.2</b></a></li>
    32943295                        <li class="indline1">DQUOTE&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>1.2</b></a></li>
    3295                         <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>5.1.1</b></a></li>
    3296                         <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>4.1.1</b></a></li>
    3297                         <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.2</b></a></li>
    3298                         <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.2</b></a></li>
    3299                         <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.2</b></a></li>
    3300                         <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.5</b></a></li>
    3301                         <li class="indline1"><tt>GMT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>6.1</b></a></li>
    3302                         <li class="indline1"><tt>header-field</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.2</b></a></li>
     3296                        <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>5.1.1</b></a></li>
     3297                        <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>4.1.1</b></a></li>
     3298                        <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.2</b></a></li>
     3299                        <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.2</b></a></li>
     3300                        <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.2</b></a></li>
     3301                        <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.5</b></a></li>
     3302                        <li class="indline1"><tt>GMT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>6.1</b></a></li>
     3303                        <li class="indline1"><tt>header-field</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3.2</b></a></li>
    33033304                        <li class="indline1">HEXDIG&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>1.2</b></a></li>
    3304                         <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.97"><b>9.4</b></a></li>
    3305                         <li class="indline1"><tt>Host-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.98"><b>9.4</b></a></li>
    3306                         <li class="indline1"><tt>hour</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>6.1</b></a></li>
    3307                         <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>6.1</b></a></li>
    3308                         <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3</b></a></li>
    3309                         <li class="indline1"><tt>HTTP-Prot-Name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.25"><b>2.5</b></a></li>
    3310                         <li class="indline1"><tt>http-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>2.6.1</b></a></li>
    3311                         <li class="indline1"><tt>HTTP-Version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.24"><b>2.5</b></a></li>
    3312                         <li class="indline1"><tt>https-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>2.6.2</b></a></li>
    3313                         <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>6.2.1</b></a></li>
     3305                        <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.96"><b>9.4</b></a></li>
     3306                        <li class="indline1"><tt>Host-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.97"><b>9.4</b></a></li>
     3307                        <li class="indline1"><tt>hour</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>6.1</b></a></li>
     3308                        <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>6.1</b></a></li>
     3309                        <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>3</b></a></li>
     3310                        <li class="indline1"><tt>HTTP-Prot-Name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.24"><b>2.5</b></a></li>
     3311                        <li class="indline1"><tt>http-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.32"><b>2.6.1</b></a></li>
     3312                        <li class="indline1"><tt>HTTP-Version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.23"><b>2.5</b></a></li>
     3313                        <li class="indline1"><tt>https-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>2.6.2</b></a></li>
     3314                        <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>6.2.1</b></a></li>
    33143315                        <li class="indline1">LF&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>1.2</b></a></li>
    3315                         <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.3</b></a></li>
    3316                         <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>4.1.1</b></a></li>
    3317                         <li class="indline1"><tt>minute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>6.1</b></a></li>
    3318                         <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>6.1</b></a></li>
    3319                         <li class="indline1"><tt>obs-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>6.1</b></a></li>
     3316                        <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.3</b></a></li>
     3317                        <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>4.1.1</b></a></li>
     3318                        <li class="indline1"><tt>minute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>6.1</b></a></li>
     3319                        <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>6.1</b></a></li>
     3320                        <li class="indline1"><tt>obs-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>6.1</b></a></li>
    33203321                        <li class="indline1"><tt>obs-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>1.2.2</b></a></li>
    33213322                        <li class="indline1">OCTET&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>1.2</b></a></li>
    33223323                        <li class="indline1"><tt>OWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>1.2.2</b></a></li>
    3323                         <li class="indline1"><tt>path-absolute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.29"><b>2.6</b></a></li>
    3324                         <li class="indline1"><tt>port</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.30"><b>2.6</b></a></li>
    3325                         <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>6.3</b></a></li>
    3326                         <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88"><b>6.3</b></a></li>
    3327                         <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.113"><b>9.9</b></a></li>
    3328                         <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.114"><b>9.9</b></a></li>
    3329                         <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.116"><b>9.9</b></a></li>
     3324                        <li class="indline1"><tt>path-absolute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.28"><b>2.6</b></a></li>
     3325                        <li class="indline1"><tt>port</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.29"><b>2.6</b></a></li>
     3326                        <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86"><b>6.3</b></a></li>
     3327                        <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>6.3</b></a></li>
     3328                        <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.112"><b>9.9</b></a></li>
     3329                        <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.113"><b>9.9</b></a></li>
     3330                        <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.115"><b>9.9</b></a></li>
    33303331                        <li class="indline1"><tt>qdtext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>1.2.2</b></a></li>
    3331                         <li class="indline1"><tt>query</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.31"><b>2.6</b></a></li>
    3332                         <li class="indline1"><tt>quoted-pair</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.22"><b>1.2.2</b></a></li>
     3332                        <li class="indline1"><tt>query</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.30"><b>2.6</b></a></li>
     3333                        <li class="indline1"><tt>quoted-pair</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>1.2.2</b></a></li>
    33333334                        <li class="indline1"><tt>quoted-string</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>1.2.2</b></a></li>
    3334                         <li class="indline1"><tt>quoted-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>1.2.2</b></a></li>
    3335                         <li class="indline1"><tt>qvalue</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.89"><b>6.4</b></a></li>
    3336                         <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>5.1.1</b></a></li>
    3337                         <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.115"><b>9.9</b></a></li>
    3338                         <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.112"><b>9.9</b></a></li>
    3339                         <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>4</b></a></li>
    3340                         <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>4.1</b></a></li>
    3341                         <li class="indline1"><tt>request-target</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>4.1.2</b></a></li>
    3342                         <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>5</b></a></li>
    3343                         <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>6.1</b></a></li>
    3344                         <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>6.1</b></a></li>
     3335                        <li class="indline1"><tt>qvalue</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88"><b>6.4</b></a></li>
     3336                        <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>5.1.1</b></a></li>
     3337                        <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.114"><b>9.9</b></a></li>
     3338                        <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.111"><b>9.9</b></a></li>
     3339                        <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>4</b></a></li>
     3340                        <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>4.1</b></a></li>
     3341                        <li class="indline1"><tt>request-target</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>4.1.2</b></a></li>
     3342                        <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>5</b></a></li>
     3343                        <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>6.1</b></a></li>
     3344                        <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>6.1</b></a></li>
    33453345                        <li class="indline1"><tt>RWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>1.2.2</b></a></li>
    3346                         <li class="indline1"><tt>second</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>6.1</b></a></li>
     3346                        <li class="indline1"><tt>second</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>6.1</b></a></li>
    33473347                        <li class="indline1">SP&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>1.2</b></a></li>
    3348                         <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>5.1.1</b></a></li>
    3349                         <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>5.1</b></a></li>
    3350                         <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.101"><b>9.5</b></a></li>
     3348                        <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>5.1.1</b></a></li>
     3349                        <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>5.1</b></a></li>
     3350                        <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.100"><b>9.5</b></a></li>
    33513351                        <li class="indline1"><tt>tchar</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>1.2.2</b></a></li>
    3352                         <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.99"><b>9.5</b></a></li>
    3353                         <li class="indline1"><tt>te-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.103"><b>9.5</b></a></li>
    3354                         <li class="indline1"><tt>te-params</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.102"><b>9.5</b></a></li>
    3355                         <li class="indline1"><tt>TE-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.100"><b>9.5</b></a></li>
    3356                         <li class="indline1"><tt>time-of-day</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>6.1</b></a></li>
     3352                        <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.98"><b>9.5</b></a></li>
     3353                        <li class="indline1"><tt>te-ext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.102"><b>9.5</b></a></li>
     3354                        <li class="indline1"><tt>te-params</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.101"><b>9.5</b></a></li>
     3355                        <li class="indline1"><tt>TE-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.99"><b>9.5</b></a></li>
     3356                        <li class="indline1"><tt>time-of-day</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>6.1</b></a></li>
    33573357                        <li class="indline1"><tt>token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>1.2.2</b></a></li>
    3358                         <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.104"><b>9.6</b></a></li>
    3359                         <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85"><b>6.2.1</b></a></li>
    3360                         <li class="indline1"><tt>Trailer-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.105"><b>9.6</b></a></li>
    3361                         <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>6.2</b></a></li>
    3362                         <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.106"><b>9.7</b></a></li>
    3363                         <li class="indline1"><tt>Transfer-Encoding-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.107"><b>9.7</b></a></li>
    3364                         <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>6.2</b></a></li>
    3365                         <li class="indline1"><tt>transfer-parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>6.2</b></a></li>
    3366                         <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.108"><b>9.8</b></a></li>
    3367                         <li class="indline1"><tt>Upgrade-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.109"><b>9.8</b></a></li>
    3368                         <li class="indline1"><tt>uri-host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.32"><b>2.6</b></a></li>
    3369                         <li class="indline1"><tt>URI-reference</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.26"><b>2.6</b></a></li>
    3370                         <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>6.2</b></a></li>
     3358                        <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.103"><b>9.6</b></a></li>
     3359                        <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>6.2.1</b></a></li>
     3360                        <li class="indline1"><tt>Trailer-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.104"><b>9.6</b></a></li>
     3361                        <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>6.2</b></a></li>
     3362                        <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.105"><b>9.7</b></a></li>
     3363                        <li class="indline1"><tt>Transfer-Encoding-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.106"><b>9.7</b></a></li>
     3364                        <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>6.2</b></a></li>
     3365                        <li class="indline1"><tt>transfer-parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>6.2</b></a></li>
     3366                        <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.107"><b>9.8</b></a></li>
     3367                        <li class="indline1"><tt>Upgrade-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.108"><b>9.8</b></a></li>
     3368                        <li class="indline1"><tt>uri-host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.31"><b>2.6</b></a></li>
     3369                        <li class="indline1"><tt>URI-reference</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.25"><b>2.6</b></a></li>
     3370                        <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>6.2</b></a></li>
    33713371                        <li class="indline1">VCHAR&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>1.2</b></a></li>
    3372                         <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.110"><b>9.9</b></a></li>
    3373                         <li class="indline1"><tt>Via-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.111"><b>9.9</b></a></li>
     3372                        <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.109"><b>9.9</b></a></li>
     3373                        <li class="indline1"><tt>Via-v</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.110"><b>9.9</b></a></li>
    33743374                        <li class="indline1">WSP&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>1.2</b></a></li>
    3375                         <li class="indline1"><tt>year</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>6.1</b></a></li>
     3375                        <li class="indline1"><tt>year</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>6.1</b></a></li>
    33763376                     </ul>
    33773377                  </li>
    3378                   <li class="indline1">gzip (Coding Format)&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86">6.2.2.3</a></li>
     3378                  <li class="indline1">gzip (Coding Format)&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85">6.2.2.3</a></li>
    33793379               </ul>
    33803380            </li>
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