Changeset 212


Ignore:
Timestamp:
Feb 14, 2008, 4:46:46 AM (11 years ago)
Author:
julian.reschke@…
Message:

Remove delta-seconds def from P1, just redefine it in P2 (revisits change [210]); relates to #36.

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

Legend:

Unmodified
Added
Removed
  • draft-ietf-httpbis/latest/outlineALL.html

    r211 r212  
    7777                     <li class="tocline1">3.3&nbsp;&nbsp;&nbsp;<a href="p1-messaging.html#date.time.formats">Date/Time Formats</a><ul class="toc">
    7878                           <li class="tocline1">3.3.1&nbsp;&nbsp;&nbsp;<a href="p1-messaging.html#full.date">Full Date</a></li>
    79                            <li class="tocline1">3.3.2&nbsp;&nbsp;&nbsp;<a href="p1-messaging.html#time.spans">Time Spans</a></li>
    8079                        </ul>
    8180                     </li>
  • draft-ietf-httpbis/latest/p1-messaging.html

    r210 r212  
    508508               <li class="tocline1">3.3&nbsp;&nbsp;&nbsp;<a href="#date.time.formats">Date/Time Formats</a><ul class="toc">
    509509                     <li class="tocline1">3.3.1&nbsp;&nbsp;&nbsp;<a href="#full.date">Full Date</a></li>
    510                      <li class="tocline1">3.3.2&nbsp;&nbsp;&nbsp;<a href="#time.spans">Time Spans</a></li>
    511510                  </ul>
    512511               </li>
     
    11201119         are not required to use these formats for user presentation, request logging, etc.
    11211120      </p>
    1122       <h3 id="rfc.section.3.3.2"><a href="#rfc.section.3.3.2">3.3.2</a>&nbsp;<a id="time.spans" href="#time.spans">Time Spans</a></h3>
    1123       <p id="rfc.section.3.3.2.p.1">Time spans are presented as non-negative decimal integers, representing time in seconds.</p>
    1124       <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.43"></span>  delta-seconds  = 1*DIGIT
    1125 </pre><h2 id="rfc.section.3.4"><a href="#rfc.section.3.4">3.4</a>&nbsp;<a id="transfer.codings" href="#transfer.codings">Transfer Codings</a></h2>
     1121      <h2 id="rfc.section.3.4"><a href="#rfc.section.3.4">3.4</a>&nbsp;<a id="transfer.codings" href="#transfer.codings">Transfer Codings</a></h2>
    11261122      <p id="rfc.section.3.4.p.1">Transfer-coding values are used to indicate an encoding transformation that has been, can be, or may need to be applied to
    11271123         an entity-body in order to ensure "safe transport" through the network. This differs from a content coding in that the transfer-coding
    11281124         is a property of the message, not of the original entity.
    11291125      </p>
    1130       <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.44"></span><span id="rfc.iref.g.45"></span>  transfer-coding         = "chunked" | transfer-extension
     1126      <div id="rfc.figure.u.22"></div><pre class="inline"><span id="rfc.iref.g.43"></span><span id="rfc.iref.g.44"></span>  transfer-coding         = "chunked" | transfer-extension
    11311127  transfer-extension      = token *( ";" parameter )
    11321128</pre><p id="rfc.section.3.4.p.3">Parameters are in the form of attribute/value pairs.</p>
    1133       <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.46"></span><span id="rfc.iref.g.47"></span><span id="rfc.iref.g.48"></span>  parameter               = attribute "=" value
     1129      <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.45"></span><span id="rfc.iref.g.46"></span><span id="rfc.iref.g.47"></span>  parameter               = attribute "=" value
    11341130  attribute               = token
    11351131  value                   = token | quoted-string
     
    11561152         necessary for the recipient to verify that it has received the full message.
    11571153      </p>
    1158       <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.49"></span><span id="rfc.iref.g.50"></span><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></span><span id="rfc.iref.g.53"></span><span id="rfc.iref.g.54"></span><span id="rfc.iref.g.55"></span><span id="rfc.iref.g.56"></span><span id="rfc.iref.g.57"></span>  Chunked-Body   = *chunk
     1154      <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.48"></span><span id="rfc.iref.g.49"></span><span id="rfc.iref.g.50"></span><span id="rfc.iref.g.51"></span><span id="rfc.iref.g.52"></span><span id="rfc.iref.g.53"></span><span id="rfc.iref.g.54"></span><span id="rfc.iref.g.55"></span><span id="rfc.iref.g.56"></span>  Chunked-Body   = *chunk
    11591155                   last-chunk
    11601156                   trailer-part
     
    11931189      </p>
    11941190      <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>
    1195       <div id="rfc.figure.u.26"></div><pre class="text">    length := 0
     1191      <div id="rfc.figure.u.25"></div><pre class="text">    length := 0
    11961192    read chunk-size, chunk-extension (if any) and CRLF
    11971193    while (chunk-size &gt; 0) {
     
    12151211         space. By convention, the products are listed in order of their significance for identifying the application.
    12161212      </p>
    1217       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.58"></span><span id="rfc.iref.g.59"></span>  product         = token ["/" product-version]
     1213      <div id="rfc.figure.u.26"></div><pre class="inline"><span id="rfc.iref.g.57"></span><span id="rfc.iref.g.58"></span>  product         = token ["/" product-version]
    12181214  product-version = token
    12191215</pre><p id="rfc.section.3.5.p.3">Examples:</p>
    1220       <div id="rfc.figure.u.28"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
     1216      <div id="rfc.figure.u.27"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
    12211217    Server: Apache/0.8.4
    12221218</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).
     
    12251221      <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>
    12261222      <p id="rfc.section.4.1.p.1">HTTP messages consist of requests from client to server and responses from server to client.</p>
    1227       <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.60"></span>  HTTP-message   = Request | Response     ; HTTP/1.1 messages
     1223      <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.59"></span>  HTTP-message   = Request | Response     ; HTTP/1.1 messages
    12281224</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="#RFC2822" id="rfc.xref.RFC2822.2"><cite title="Internet Message Format">[RFC2822]</cite></a> for transferring entities (the payload of the message). Both types of message consist of a start-line, zero or more header
    12291225         fields (also known as "headers"), an empty line (i.e., a line with nothing preceding the CRLF) indicating the end of the header
    12301226         fields, and possibly a message-body.
    12311227      </p>
    1232       <div id="rfc.figure.u.30"></div><pre class="inline"><span id="rfc.iref.g.61"></span><span id="rfc.iref.g.62"></span>  generic-message = start-line
     1228      <div id="rfc.figure.u.29"></div><pre class="inline"><span id="rfc.iref.g.60"></span><span id="rfc.iref.g.61"></span>  generic-message = start-line
    12331229                    *(message-header CRLF)
    12341230                    CRLF
     
    12481244         forms.
    12491245      </p>
    1250       <div id="rfc.figure.u.31"></div><pre class="inline"><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>  message-header = field-name ":" [ field-value ]
     1246      <div id="rfc.figure.u.30"></div><pre class="inline"><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>  message-header = field-name ":" [ field-value ]
    12511247  field-name     = token
    12521248  field-value    = *( field-content | LWS )
     
    12731269         header field (<a href="#header.transfer-encoding" id="rfc.xref.header.transfer-encoding.2" title="Transfer-Encoding">Section&nbsp;8.7</a>).
    12741270      </p>
    1275       <div id="rfc.figure.u.32"></div><pre class="inline"><span id="rfc.iref.g.67"></span>  message-body = entity-body
     1271      <div id="rfc.figure.u.31"></div><pre class="inline"><span id="rfc.iref.g.66"></span>  message-body = entity-body
    12761272               | &lt;entity-body encoded as per Transfer-Encoding&gt;
    12771273</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
     
    13401336         to the entity being transferred. These header fields apply only to the message being transmitted.
    13411337      </p>
    1342       <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.68"></span>  general-header = Cache-Control            ; <a href="#Part6" id="rfc.xref.Part6.6"><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>
     1338      <div id="rfc.figure.u.32"></div><pre class="inline"><span id="rfc.iref.g.67"></span>  general-header = Cache-Control            ; <a href="#Part6" id="rfc.xref.Part6.6"><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>
    13431339                 | Connection               ; <a href="#header.connection" id="rfc.xref.header.connection.1" title="Connection">Section&nbsp;8.1</a>
    13441340                 | Date                     ; <a href="#header.date" id="rfc.xref.header.date.1" title="Date">Section&nbsp;8.3</a>
     
    13571353         resource, the identifier of the resource, and the protocol version in use.
    13581354      </p>
    1359       <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.69"></span>  Request       = Request-Line              ; <a href="#request-line" title="Request-Line">Section&nbsp;5.1</a>
     1355      <div id="rfc.figure.u.33"></div><pre class="inline"><span id="rfc.iref.g.68"></span>  Request       = Request-Line              ; <a href="#request-line" title="Request-Line">Section&nbsp;5.1</a>
    13601356                  *(( general-header        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    13611357                   | request-header         ; <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>
     
    13671363         elements are separated by SP characters. No CR or LF is allowed except in the final CRLF sequence.
    13681364      </p>
    1369       <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.70"></span>  Request-Line   = Method SP Request-URI SP HTTP-Version CRLF
     1365      <div id="rfc.figure.u.34"></div><pre class="inline"><span id="rfc.iref.g.69"></span>  Request-Line   = Method SP Request-URI SP HTTP-Version CRLF
    13701366</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>
    13711367      <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>
    1372       <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.71"></span><span id="rfc.iref.g.72"></span>  Method         = token
     1368      <div id="rfc.figure.u.35"></div><pre class="inline"><span id="rfc.iref.g.70"></span><span id="rfc.iref.g.71"></span>  Method         = token
    13731369</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>
    13741370      <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.
    13751371      </p>
    1376       <div id="rfc.figure.u.37"></div><pre class="inline"><span id="rfc.iref.g.73"></span>  Request-URI    = "*"
     1372      <div id="rfc.figure.u.36"></div><pre class="inline"><span id="rfc.iref.g.72"></span>  Request-URI    = "*"
    13771373                 | absoluteURI
    13781374                 | ( path-absolute [ "?" query ] )
     
    13821378         apply to a resource. One example would be
    13831379      </p>
    1384       <div id="rfc.figure.u.38"></div><pre class="text">    OPTIONS * HTTP/1.1
     1380      <div id="rfc.figure.u.37"></div><pre class="text">    OPTIONS * HTTP/1.1
    13851381</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,
    13861382         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
     
    13881384         Request-Line would be:
    13891385      </p>
    1390       <div id="rfc.figure.u.39"></div><pre class="text">    GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1
     1386      <div id="rfc.figure.u.38"></div><pre class="text">    GET http://www.example.org/pub/WWW/TheProject.html HTTP/1.1
    13911387</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.
    13921388      </p>
     
    13971393         server would create a TCP connection to port 80 of the host "www.example.org" and send the lines:
    13981394      </p>
    1399       <div id="rfc.figure.u.40"></div><pre class="text">    GET /pub/WWW/TheProject.html HTTP/1.1
     1395      <div id="rfc.figure.u.39"></div><pre class="text">    GET /pub/WWW/TheProject.html HTTP/1.1
    14001396    Host: www.example.org
    14011397</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
     
    14351431      <h1 id="rfc.section.6"><a href="#rfc.section.6">6.</a>&nbsp;<a id="response" href="#response">Response</a></h1>
    14361432      <p id="rfc.section.6.p.1">After receiving and interpreting a request message, a server responds with an HTTP response message.</p>
    1437       <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.74"></span>  Response      = Status-Line               ; <a href="#status-line" title="Status-Line">Section&nbsp;6.1</a>
     1433      <div id="rfc.figure.u.40"></div><pre class="inline"><span id="rfc.iref.g.73"></span>  Response      = Status-Line               ; <a href="#status-line" title="Status-Line">Section&nbsp;6.1</a>
    14381434                  *(( general-header        ; <a href="#general.header.fields" title="General Header Fields">Section&nbsp;4.5</a>
    14391435                   | response-header        ; <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>
     
    14461442         CRLF sequence.
    14471443      </p>
    1448       <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.75"></span>  Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF
     1444      <div id="rfc.figure.u.41"></div><pre class="inline"><span id="rfc.iref.g.74"></span>  Status-Line = HTTP-Version SP Status-Code SP Reason-Phrase CRLF
    14491445</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>
    14501446      <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
     
    14631459         <li>5xx: Server Error - The server failed to fulfill an apparently valid request</li>
    14641460      </ul>
    1465       <div id="rfc.figure.u.43"></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>  Status-Code    = 3DIGIT
     1461      <div id="rfc.figure.u.42"></div><pre class="inline"><span id="rfc.iref.g.75"></span><span id="rfc.iref.g.76"></span><span id="rfc.iref.g.77"></span>  Status-Code    = 3DIGIT
    14661462  Reason-Phrase  = *&lt;TEXT, excluding CR, LF&gt;
    14671463</pre><h1 id="rfc.section.7"><a href="#rfc.section.7">7.</a>&nbsp;<a id="connections" href="#connections">Connections</a></h1>
     
    16541650      </p>
    16551651      <p id="rfc.section.8.1.p.2">The Connection header has the following grammar:</p>
    1656       <div id="rfc.figure.u.44"></div><pre class="inline"><span id="rfc.iref.g.79"></span><span id="rfc.iref.g.80"></span>  Connection = "Connection" ":" 1#(connection-token)
     1652      <div id="rfc.figure.u.43"></div><pre class="inline"><span id="rfc.iref.g.78"></span><span id="rfc.iref.g.79"></span>  Connection = "Connection" ":" 1#(connection-token)
    16571653  connection-token  = token
    16581654</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
     
    16661662         of the response. For example,
    16671663      </p>
    1668       <div id="rfc.figure.u.45"></div><pre class="text">    Connection: close
     1664      <div id="rfc.figure.u.44"></div><pre class="text">    Connection: close
    16691665</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.
    16701666      </p>
     
    16821678         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.
    16831679      </p>
    1684       <div id="rfc.figure.u.46"></div><pre class="inline"><span id="rfc.iref.g.81"></span>  Content-Length    = "Content-Length" ":" 1*DIGIT
     1680      <div id="rfc.figure.u.45"></div><pre class="inline"><span id="rfc.iref.g.80"></span>  Content-Length    = "Content-Length" ":" 1*DIGIT
    16851681</pre><p id="rfc.section.8.2.p.3">An example is</p>
    1686       <div id="rfc.figure.u.47"></div><pre class="text">    Content-Length: 3495
     1682      <div id="rfc.figure.u.46"></div><pre class="text">    Content-Length: 3495
    16871683</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>.
    16881684      </p>
     
    16991695         as orig-date in <a href="http://tools.ietf.org/html/rfc2822#section-3.6.1">Section 3.6.1</a> of <a href="#RFC2822" id="rfc.xref.RFC2822.4"><cite title="Internet Message Format">[RFC2822]</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.
    17001696      </p>
    1701       <div id="rfc.figure.u.48"></div><pre class="inline"><span id="rfc.iref.g.82"></span>  Date  = "Date" ":" HTTP-date
     1697      <div id="rfc.figure.u.47"></div><pre class="inline"><span id="rfc.iref.g.81"></span>  Date  = "Date" ":" HTTP-date
    17021698</pre><p id="rfc.section.8.3.p.3">An example is</p>
    1703       <div id="rfc.figure.u.49"></div><pre class="text">    Date: Tue, 15 Nov 1994 08:12:31 GMT
     1699      <div id="rfc.figure.u.48"></div><pre class="text">    Date: Tue, 15 Nov 1994 08:12:31 GMT
    17041700</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:
    17051701      </p>
     
    17371733         a single IP address.
    17381734      </p>
    1739       <div id="rfc.figure.u.50"></div><pre class="inline"><span id="rfc.iref.g.83"></span>  Host = "Host" ":" uri-host [ ":" port ] ; <a href="#http.url" title="http URL">Section&nbsp;3.2.2</a>
     1735      <div id="rfc.figure.u.49"></div><pre class="inline"><span id="rfc.iref.g.82"></span>  Host = "Host" ":" uri-host [ ":" port ] ; <a href="#http.url" title="http URL">Section&nbsp;3.2.2</a>
    17401736</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
    17411737         URL). For example, a request on the origin server for &lt;http://www.example.org/pub/WWW/&gt; would properly include:
    17421738      </p>
    1743       <div id="rfc.figure.u.51"></div><pre class="text">    GET /pub/WWW/ HTTP/1.1
     1739      <div id="rfc.figure.u.50"></div><pre class="text">    GET /pub/WWW/ HTTP/1.1
    17441740    Host: www.example.org
    17451741</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
     
    17561752         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>).
    17571753      </p>
    1758       <div id="rfc.figure.u.52"></div><pre class="inline"><span id="rfc.iref.g.84"></span><span id="rfc.iref.g.85"></span>  TE        = "TE" ":" #( t-codings )
     1754      <div id="rfc.figure.u.51"></div><pre class="inline"><span id="rfc.iref.g.83"></span><span id="rfc.iref.g.84"></span>  TE        = "TE" ":" #( t-codings )
    17591755  t-codings = "trailers" | ( transfer-extension [ accept-params ] )
    17601756</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,
     
    17621758      </p>
    17631759      <p id="rfc.section.8.5.p.4">Examples of its use are:</p>
    1764       <div id="rfc.figure.u.53"></div><pre class="text">    TE: deflate
     1760      <div id="rfc.figure.u.52"></div><pre class="text">    TE: deflate
    17651761    TE:
    17661762    TE: trailers, deflate;q=0.5
     
    17991795         with chunked transfer-coding.
    18001796      </p>
    1801       <div id="rfc.figure.u.54"></div><pre class="inline"><span id="rfc.iref.g.86"></span>  Trailer  = "Trailer" ":" 1#field-name
     1797      <div id="rfc.figure.u.53"></div><pre class="inline"><span id="rfc.iref.g.85"></span>  Trailer  = "Trailer" ":" 1#field-name
    18021798</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
    18031799         to know which header fields to expect in the trailer.
     
    18191815         transfer-coding is a property of the message, not of the entity.
    18201816      </p>
    1821       <div id="rfc.figure.u.55"></div><pre class="inline"><span id="rfc.iref.g.87"></span>  Transfer-Encoding       = "Transfer-Encoding" ":" 1#transfer-coding
     1817      <div id="rfc.figure.u.54"></div><pre class="inline"><span id="rfc.iref.g.86"></span>  Transfer-Encoding       = "Transfer-Encoding" ":" 1#transfer-coding
    18221818</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:
    18231819      </p>
    1824       <div id="rfc.figure.u.56"></div><pre class="text">  Transfer-Encoding: chunked
     1820      <div id="rfc.figure.u.55"></div><pre class="text">  Transfer-Encoding: chunked
    18251821</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.
    18261822      </p>
     
    18321828         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.
    18331829      </p>
    1834       <div id="rfc.figure.u.57"></div><pre class="inline"><span id="rfc.iref.g.88"></span>  Upgrade        = "Upgrade" ":" 1#product
     1830      <div id="rfc.figure.u.56"></div><pre class="inline"><span id="rfc.iref.g.87"></span>  Upgrade        = "Upgrade" ":" 1#product
    18351831</pre><p id="rfc.section.8.8.p.3">For example,</p>
    1836       <div id="rfc.figure.u.58"></div><pre class="text">    Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11
     1832      <div id="rfc.figure.u.57"></div><pre class="text">    Upgrade: HTTP/2.0, SHTTP/1.3, IRC/6.9, RTA/x11
    18371833</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
    18381834         protocol. It does so by allowing the client to advertise its desire to use another protocol, such as a later version of HTTP
     
    18631859         of all senders along the request/response chain.
    18641860      </p>
    1865       <div id="rfc.figure.u.59"></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><span id="rfc.iref.g.92"></span><span id="rfc.iref.g.93"></span><span id="rfc.iref.g.94"></span>  Via =  "Via" ":" 1#( received-protocol received-by [ comment ] )
     1861      <div id="rfc.figure.u.58"></div><pre class="inline"><span id="rfc.iref.g.88"></span><span id="rfc.iref.g.89"></span><span id="rfc.iref.g.90"></span><span id="rfc.iref.g.91"></span><span id="rfc.iref.g.92"></span><span id="rfc.iref.g.93"></span>  Via =  "Via" ":" 1#( received-protocol received-by [ comment ] )
    18661862  received-protocol = [ protocol-name "/" ] protocol-version
    18671863  protocol-name     = token
     
    18861882         server at www.example.com. The request received by www.example.com would then have the following Via header field:
    18871883      </p>
    1888       <div id="rfc.figure.u.60"></div><pre class="text">    Via: 1.0 fred, 1.1 p.example.net (Apache/1.1)
     1884      <div id="rfc.figure.u.59"></div><pre class="text">    Via: 1.0 fred, 1.1 p.example.net (Apache/1.1)
    18891885</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.
    18901886      </p>
     
    18921888         For example,
    18931889      </p>
    1894       <div id="rfc.figure.u.61"></div><pre class="text">    Via: 1.0 ricky, 1.1 ethel, 1.1 fred, 1.0 lucy
     1890      <div id="rfc.figure.u.60"></div><pre class="text">    Via: 1.0 ricky, 1.1 ethel, 1.1 fred, 1.0 lucy
    18951891</pre><p id="rfc.section.8.9.p.12">could be collapsed to</p>
    1896       <div id="rfc.figure.u.62"></div><pre class="text">    Via: 1.0 ricky, 1.1 mertz, 1.0 lucy
     1892      <div id="rfc.figure.u.61"></div><pre class="text">    Via: 1.0 ricky, 1.1 mertz, 1.0 lucy
    18971893</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
    18981894         by pseudonyms. Applications <em class="bcp14">MUST NOT</em> combine entries which have different received-protocol values.
     
    25142510         <li>Move "Product Tokens" section (back) into Part 1, as "token" is used in the definition of the Upgrade header.</li>
    25152511         <li>Add explicit references to BNF syntax and rules imported from other parts of the specification.</li>
    2516          <li>Move definition of "delta-seconds" into Part1 as a common BNF element.</li>
    25172512      </ul>
    25182513      <h1><a id="rfc.copyright" href="#rfc.copyright">Full Copyright Statement</a></h1>
     
    25782573                        <li class="indline1"><tt>ALPHA</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>2.2</b></a></li>
    25792574                        <li class="indline1"><tt>asctime-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.35"><b>3.3.1</b></a></li>
    2580                         <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>3.4</b></a></li>
     2575                        <li class="indline1"><tt>attribute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>3.4</b></a></li>
    25812576                        <li class="indline1"><tt>authority</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.25"><b>3.2.1</b></a></li>
    25822577                        <li class="indline1"><tt>CHAR</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>2.2</b></a></li>
    2583                         <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>3.4.1</b></a></li>
    2584                         <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>3.4.1</b></a></li>
    2585                         <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>3.4.1</b></a></li>
    2586                         <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>3.4.1</b></a></li>
    2587                         <li class="indline1"><tt>chunk-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>3.4.1</b></a></li>
    2588                         <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>3.4.1</b></a></li>
    2589                         <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>3.4.1</b></a></li>
     2578                        <li class="indline1"><tt>chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.49"><b>3.4.1</b></a></li>
     2579                        <li class="indline1"><tt>chunk-data</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.55"><b>3.4.1</b></a></li>
     2580                        <li class="indline1"><tt>chunk-ext-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.53"><b>3.4.1</b></a></li>
     2581                        <li class="indline1"><tt>chunk-ext-val</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.54"><b>3.4.1</b></a></li>
     2582                        <li class="indline1"><tt>chunk-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>3.4.1</b></a></li>
     2583                        <li class="indline1"><tt>chunk-size</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.50"><b>3.4.1</b></a></li>
     2584                        <li class="indline1"><tt>Chunked-Body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>3.4.1</b></a></li>
    25902585                        <li class="indline1"><tt>comment</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>2.2</b></a></li>
    2591                         <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>8.1</b></a></li>
    2592                         <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>8.1</b></a></li>
    2593                         <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>8.2</b></a></li>
     2586                        <li class="indline1"><tt>Connection</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>8.1</b></a></li>
     2587                        <li class="indline1"><tt>connection-token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.79"><b>8.1</b></a></li>
     2588                        <li class="indline1"><tt>Content-Length</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.80"><b>8.2</b></a></li>
    25942589                        <li class="indline1"><tt>CR</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>2.2</b></a></li>
    25952590                        <li class="indline1"><tt>CRLF</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>2.2</b></a></li>
    25962591                        <li class="indline1"><tt>ctext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>2.2</b></a></li>
    25972592                        <li class="indline1"><tt>CTL</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>2.2</b></a></li>
    2598                         <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>8.3</b></a></li>
     2593                        <li class="indline1"><tt>Date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.81"><b>8.3</b></a></li>
    25992594                        <li class="indline1"><tt>date1</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.36"><b>3.3.1</b></a></li>
    26002595                        <li class="indline1"><tt>date2</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.37"><b>3.3.1</b></a></li>
    26012596                        <li class="indline1"><tt>date3</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.38"><b>3.3.1</b></a></li>
    2602                         <li class="indline1"><tt>delta-seconds</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.3.2</b></a></li>
    26032597                        <li class="indline1"><tt>DIGIT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>2.2</b></a></li>
    26042598                        <li class="indline1"><tt>DQUOTE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>2.2</b></a></li>
    2605                         <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>6.1.1</b></a></li>
    2606                         <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>5.1.1</b></a></li>
    2607                         <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>4.2</b></a></li>
    2608                         <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>4.2</b></a></li>
    2609                         <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>4.2</b></a></li>
    2610                         <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>4.5</b></a></li>
    2611                         <li class="indline1"><tt>generic-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>4.1</b></a></li>
     2599                        <li class="indline1"><tt>extension-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>6.1.1</b></a></li>
     2600                        <li class="indline1"><tt>extension-method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>5.1.1</b></a></li>
     2601                        <li class="indline1"><tt>field-content</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.65"><b>4.2</b></a></li>
     2602                        <li class="indline1"><tt>field-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>4.2</b></a></li>
     2603                        <li class="indline1"><tt>field-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.64"><b>4.2</b></a></li>
     2604                        <li class="indline1"><tt>general-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>4.5</b></a></li>
     2605                        <li class="indline1"><tt>generic-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>4.1</b></a></li>
    26122606                        <li class="indline1"><tt>HEX</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>2.2</b></a></li>
    2613                         <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>8.4</b></a></li>
     2607                        <li class="indline1"><tt>Host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.82"><b>8.4</b></a></li>
    26142608                        <li class="indline1"><tt>HTAB</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>2.2</b></a></li>
    26152609                        <li class="indline1"><tt>HTTP-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.32"><b>3.3.1</b></a></li>
    2616                         <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.60"><b>4.1</b></a></li>
     2610                        <li class="indline1"><tt>HTTP-message</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>4.1</b></a></li>
    26172611                        <li class="indline1"><tt>http-URL</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.31"><b>3.2.2</b></a></li>
    26182612                        <li class="indline1"><tt>HTTP-Version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.23"><b>3.1</b></a></li>
    2619                         <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.52"><b>3.4.1</b></a></li>
     2613                        <li class="indline1"><tt>last-chunk</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.51"><b>3.4.1</b></a></li>
    26202614                        <li class="indline1"><tt>LF</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>2.2</b></a></li>
    26212615                        <li class="indline1"><tt>LWS</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>2.2</b></a></li>
    2622                         <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.67"><b>4.3</b></a></li>
    2623                         <li class="indline1"><tt>message-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.63"><b>4.2</b></a></li>
    2624                         <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.71"><b>5.1.1</b></a></li>
     2616                        <li class="indline1"><tt>message-body</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.66"><b>4.3</b></a></li>
     2617                        <li class="indline1"><tt>message-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>4.2</b></a></li>
     2618                        <li class="indline1"><tt>Method</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>5.1.1</b></a></li>
    26252619                        <li class="indline1"><tt>month</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.42"><b>3.3.1</b></a></li>
    26262620                        <li class="indline1"><tt>OCTET</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>2.2</b></a></li>
    2627                         <li class="indline1"><tt>parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.46"><b>3.4</b></a></li>
     2621                        <li class="indline1"><tt>parameter</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>3.4</b></a></li>
    26282622                        <li class="indline1"><tt>path-absolute</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.26"><b>3.2.1</b></a></li>
    26292623                        <li class="indline1"><tt>port</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.27"><b>3.2.1</b></a></li>
    2630                         <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>3.5</b></a></li>
    2631                         <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.59"><b>3.5</b></a></li>
    2632                         <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.91"><b>8.9</b></a></li>
    2633                         <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.92"><b>8.9</b></a></li>
    2634                         <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.94"><b>8.9</b></a></li>
     2624                        <li class="indline1"><tt>product</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>3.5</b></a></li>
     2625                        <li class="indline1"><tt>product-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.58"><b>3.5</b></a></li>
     2626                        <li class="indline1"><tt>protocol-name</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.90"><b>8.9</b></a></li>
     2627                        <li class="indline1"><tt>protocol-version</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.91"><b>8.9</b></a></li>
     2628                        <li class="indline1"><tt>pseudonym</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.93"><b>8.9</b></a></li>
    26352629                        <li class="indline1"><tt>qdtext</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>2.2</b></a></li>
    26362630                        <li class="indline1"><tt>query</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.28"><b>3.2.1</b></a></li>
    26372631                        <li class="indline1"><tt>quoted-pair</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.22"><b>2.2</b></a></li>
    26382632                        <li class="indline1"><tt>quoted-string</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>2.2</b></a></li>
    2639                         <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.78"><b>6.1.1</b></a></li>
    2640                         <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.93"><b>8.9</b></a></li>
    2641                         <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.90"><b>8.9</b></a></li>
     2633                        <li class="indline1"><tt>Reason-Phrase</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.77"><b>6.1.1</b></a></li>
     2634                        <li class="indline1"><tt>received-by</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.92"><b>8.9</b></a></li>
     2635                        <li class="indline1"><tt>received-protocol</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.89"><b>8.9</b></a></li>
    26422636                        <li class="indline1"><tt>relativeURI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.29"><b>3.2.1</b></a></li>
    2643                         <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>5</b></a></li>
    2644                         <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.70"><b>5.1</b></a></li>
    2645                         <li class="indline1"><tt>Request-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>5.1.2</b></a></li>
    2646                         <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>6</b></a></li>
     2637                        <li class="indline1"><tt>Request</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.68"><b>5</b></a></li>
     2638                        <li class="indline1"><tt>Request-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.69"><b>5.1</b></a></li>
     2639                        <li class="indline1"><tt>Request-URI</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.72"><b>5.1.2</b></a></li>
     2640                        <li class="indline1"><tt>Response</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.73"><b>6</b></a></li>
    26472641                        <li class="indline1"><tt>rfc1123-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.33"><b>3.3.1</b></a></li>
    26482642                        <li class="indline1"><tt>rfc850-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.34"><b>3.3.1</b></a></li>
    26492643                        <li class="indline1"><tt>separators</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>2.2</b></a></li>
    26502644                        <li class="indline1"><tt>SP</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>2.2</b></a></li>
    2651                         <li class="indline1"><tt>start-line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.62"><b>4.1</b></a></li>
    2652                         <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.76"><b>6.1.1</b></a></li>
    2653                         <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>6.1</b></a></li>
    2654                         <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85"><b>8.5</b></a></li>
    2655                         <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>8.5</b></a></li>
     2645                        <li class="indline1"><tt>start-line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.61"><b>4.1</b></a></li>
     2646                        <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.75"><b>6.1.1</b></a></li>
     2647                        <li class="indline1"><tt>Status-Line</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.74"><b>6.1</b></a></li>
     2648                        <li class="indline1"><tt>t-codings</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.84"><b>8.5</b></a></li>
     2649                        <li class="indline1"><tt>TE</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.83"><b>8.5</b></a></li>
    26562650                        <li class="indline1"><tt>TEXT</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>2.2</b></a></li>
    26572651                        <li class="indline1"><tt>time</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.39"><b>3.3.1</b></a></li>
    26582652                        <li class="indline1"><tt>token</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>2.2</b></a></li>
    2659                         <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86"><b>8.6</b></a></li>
    2660                         <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.57"><b>3.4.1</b></a></li>
    2661                         <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>3.4</b></a></li>
    2662                         <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>8.7</b></a></li>
    2663                         <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.45"><b>3.4</b></a></li>
    2664                         <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88"><b>8.8</b></a></li>
     2653                        <li class="indline1"><tt>Trailer</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.85"><b>8.6</b></a></li>
     2654                        <li class="indline1"><tt>trailer-part</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.56"><b>3.4.1</b></a></li>
     2655                        <li class="indline1"><tt>transfer-coding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.43"><b>3.4</b></a></li>
     2656                        <li class="indline1"><tt>Transfer-Encoding</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.86"><b>8.7</b></a></li>
     2657                        <li class="indline1"><tt>transfer-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.44"><b>3.4</b></a></li>
     2658                        <li class="indline1"><tt>Upgrade</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.87"><b>8.8</b></a></li>
    26652659                        <li class="indline1"><tt>uri-host</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.30"><b>3.2.1</b></a></li>
    2666                         <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.48"><b>3.4</b></a></li>
    2667                         <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.89"><b>8.9</b></a></li>
     2660                        <li class="indline1"><tt>value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.47"><b>3.4</b></a></li>
     2661                        <li class="indline1"><tt>Via</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.88"><b>8.9</b></a></li>
    26682662                        <li class="indline1"><tt>weekday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.41"><b>3.3.1</b></a></li>
    26692663                        <li class="indline1"><tt>wkday</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.40"><b>3.3.1</b></a></li>
  • draft-ietf-httpbis/latest/p1-messaging.xml

    r210 r212  
    12051205</t>
    12061206</section>
    1207 
    1208 <section title="Time Spans" anchor="time.spans">
    1209 <t>
    1210   Time spans are presented as non-negative decimal integers, representing time
    1211   in seconds.
    1212 </t>
    1213 <figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="delta-seconds"/>
    1214   delta-seconds  = 1*DIGIT
    1215 </artwork></figure>
    1216 </section>
    1217 
    12181207</section>
    12191208
     
    43004289      Add explicit references to BNF syntax and rules imported from other parts of the specification.
    43014290    </t>
    4302     <t>
    4303       Move definition of "delta-seconds" into Part1 as a common BNF element.
    4304     </t>
    43054291  </list>
    43064292</t>
  • draft-ietf-httpbis/latest/p2-semantics.html

    r210 r212  
    637637      </div>
    638638      <div id="rfc.figure.u.3"></div><pre class="inline">  absoluteURI   = &lt;absoluteURI, defined in <a href="#Part1" id="rfc.xref.Part1.8"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
    639   delta-seconds = &lt;delta-seconds, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#time.spans" title="Time Spans">Section 3.3.2</a>&gt;
    640   fragment      = &lt;fragment, defined in <a href="#Part1" id="rfc.xref.Part1.10"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
    641   Host          = &lt;Host, defined in <a href="#Part1" id="rfc.xref.Part1.11"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>&gt;
    642   HTTP-date     = &lt;HTTP-date, defined in <a href="#Part1" id="rfc.xref.Part1.12"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a>&gt;
    643   product       = &lt;product, defined in <a href="#Part1" id="rfc.xref.Part1.13"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a>&gt;
    644   relativeURI   = &lt;relativeURI, defined in <a href="#Part1" id="rfc.xref.Part1.14"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
    645   TE            = &lt;TE, defined in <a href="#Part1" id="rfc.xref.Part1.15"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>&gt;
     639  fragment      = &lt;fragment, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     640  Host          = &lt;Host, defined in <a href="#Part1" id="rfc.xref.Part1.10"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>&gt;
     641  HTTP-date     = &lt;HTTP-date, defined in <a href="#Part1" id="rfc.xref.Part1.11"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a>&gt;
     642  product       = &lt;product, defined in <a href="#Part1" id="rfc.xref.Part1.12"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a>&gt;
     643  relativeURI   = &lt;relativeURI, defined in <a href="#Part1" id="rfc.xref.Part1.13"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     644  TE            = &lt;TE, defined in <a href="#Part1" id="rfc.xref.Part1.14"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>&gt;
    646645</pre><div id="rfc.figure.u.4"></div><pre class="inline">  Accept        = &lt;Accept, defined in <a href="#Part3" id="rfc.xref.Part3.1"><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;
    647646  Accept-Charset =
     
    699698                 | Expect                   ; <a href="#header.expect" id="rfc.xref.header.expect.1" title="Expect">Section&nbsp;10.2</a>
    700699                 | From                     ; <a href="#header.from" id="rfc.xref.header.from.1" title="From">Section&nbsp;10.3</a>
    701                  | Host                     ; <a href="#Part1" id="rfc.xref.Part1.16"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>
     700                 | Host                     ; <a href="#Part1" id="rfc.xref.Part1.15"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.host" title="Host">Section 8.4</a>
    702701                 | If-Match                 ; <a href="#Part4" id="rfc.xref.Part4.6"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-match" title="If-Match">Section 7.2</a>
    703702                 | If-Modified-Since        ; <a href="#Part4" id="rfc.xref.Part4.7"><cite title="HTTP/1.1, part 4: Conditional Requests">[Part4]</cite></a>, <a href="p4-conditional.html#header.if-modified-since" title="If-Modified-Since">Section 7.3</a>
     
    709708                 | Range                    ; <a href="#Part5" id="rfc.xref.Part5.5"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>, <a href="p5-range.html#header.range" title="Range">Section 6.4</a>
    710709                 | Referer                  ; <a href="#header.referer" id="rfc.xref.header.referer.1" title="Referer">Section&nbsp;10.6</a>
    711                  | TE                       ; <a href="#Part1" id="rfc.xref.Part1.17"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>
     710                 | TE                       ; <a href="#Part1" id="rfc.xref.Part1.16"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.upgrade" title="Upgrade">Section 8.8</a>
    712711                 | User-Agent               ; <a href="#header.user-agent" id="rfc.xref.header.user-agent.1" title="User-Agent">Section&nbsp;10.9</a>
    713712</pre><p id="rfc.section.4.p.3">Request-header field names can be extended reliably only in combination with a change in the protocol version. However, new
     
    797796         fields are defined in <a href="#Part3" id="rfc.xref.Part3.9"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>.
    798797      </p>
    799       <p id="rfc.section.7.p.2">An entity-body is only present in a message when a message-body is present, as described in <a href="p1-messaging.html#message.body" title="Message Body">Section 4.3</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The entity-body is obtained from the message-body by decoding any Transfer-Encoding that might have been applied to ensure
     798      <p id="rfc.section.7.p.2">An entity-body is only present in a message when a message-body is present, as described in <a href="p1-messaging.html#message.body" title="Message Body">Section 4.3</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. The entity-body is obtained from the message-body by decoding any Transfer-Encoding that might have been applied to ensure
    800799         safe and proper transfer of the message.
    801800      </p>
     
    961960      </p>
    962961      <p id="rfc.section.8.8.p.2">TRACE allows the client to see what is being received at the other end of the request chain and use that data for testing
    963          or diagnostic information. The value of the Via header field (<a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.19"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) is of particular interest, since it acts as a trace of the request chain. Use of the Max-Forwards header field allows the
     962         or diagnostic information. The value of the Via header field (<a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) is of particular interest, since it acts as a trace of the request chain. Use of the Max-Forwards header field allows the
    964963         client to limit the length of the request chain, which is useful for testing a chain of proxies forwarding messages in an
    965964         infinite loop.
     
    994993      <p id="rfc.section.9.1.1.p.1">The client <em class="bcp14">SHOULD</em> continue with its request. This interim response is used to inform the client that the initial part of the request has been
    995994         received and has not yet been rejected by the server. The client <em class="bcp14">SHOULD</em> continue by sending the remainder of the request or, if the request has already been completed, ignore this response. The
    996          server <em class="bcp14">MUST</em> send a final response after the request has been completed. See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.20"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for detailed discussion of the use and handling of this status code.
     995         server <em class="bcp14">MUST</em> send a final response after the request has been completed. See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.19"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for detailed discussion of the use and handling of this status code.
    997996      </p>
    998997      <div id="rfc.iref.24"></div>
     
    13761375      <p id="rfc.section.9.5.6.p.1">The server does not support, or refuses to support, the protocol version that was used in the request message. The server
    13771376         is indicating that it is unable or unwilling to complete the request using the same major version as the client, as described
    1378          in <a href="p1-messaging.html#http.version" title="HTTP Version">Section 3.1</a> of <a href="#Part1" id="rfc.xref.Part1.21"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, other than with this error message. The response <em class="bcp14">SHOULD</em> contain an entity describing why that version is not supported and what other protocols are supported by that server.
     1377         in <a href="p1-messaging.html#http.version" title="HTTP Version">Section 3.1</a> of <a href="#Part1" id="rfc.xref.Part1.20"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, other than with this error message. The response <em class="bcp14">SHOULD</em> contain an entity describing why that version is not supported and what other protocols are supported by that server.
    13791378      </p>
    13801379      <h1 id="rfc.section.10"><a href="#rfc.section.10">10.</a>&nbsp;<a id="header.fields" href="#header.fields">Header Field Definitions</a></h1>
     
    14231422      </p>
    14241423      <p id="rfc.section.10.2.p.7">Many older HTTP/1.0 and HTTP/1.1 applications do not understand the Expect header.</p>
    1425       <p id="rfc.section.10.2.p.8">See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.22"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for the use of the 100 (Continue) status.
     1424      <p id="rfc.section.10.2.p.8">See <a href="p1-messaging.html#use.of.the.100.status" title="Use of the 100 (Continue) Status">Section 7.2.3</a> of <a href="#Part1" id="rfc.xref.Part1.21"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a> for the use of the 100 (Continue) status.
    14261425      </p>
    14271426      <div id="rfc.iref.f.1"></div>
     
    15051504         the time of the response.
    15061505      </p>
    1507       <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.18"></span>  Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )
    1508 </pre><p id="rfc.section.10.7.p.3">Two examples of its use are</p>
    1509       <div id="rfc.figure.u.24"></div><pre class="text">    Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
     1506      <div id="rfc.figure.u.23"></div><pre class="inline"><span id="rfc.iref.g.18"></span>  Retry-After   = "Retry-After" ":" ( HTTP-date | delta-seconds )
     1507</pre><p id="rfc.section.10.7.p.3">Time spans are non-negative decimal integers, representing time in seconds.</p>
     1508      <div id="rfc.figure.u.24"></div><pre class="inline"><span id="rfc.iref.g.19"></span>  delta-seconds  = 1*DIGIT
     1509</pre><p id="rfc.section.10.7.p.5">Two examples of its use are</p>
     1510      <div id="rfc.figure.u.25"></div><pre class="text">    Retry-After: Fri, 31 Dec 1999 23:59:59 GMT
    15101511    Retry-After: 120
    1511 </pre><p id="rfc.section.10.7.p.5">In the latter example, the delay is 2 minutes.</p>
     1512</pre><p id="rfc.section.10.7.p.7">In the latter example, the delay is 2 minutes.</p>
    15121513      <div id="rfc.iref.s.42"></div>
    15131514      <div id="rfc.iref.h.9"></div>
    15141515      <h2 id="rfc.section.10.8"><a href="#rfc.section.10.8">10.8</a>&nbsp;<a id="header.server" href="#header.server">Server</a></h2>
    15151516      <p id="rfc.section.10.8.p.1">The Server response-header field contains information about the software used by the origin server to handle the request.
    1516          The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.23"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the server and any significant subproducts. The product tokens are listed in order of their significance
     1517         The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.22"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the server and any significant subproducts. The product tokens are listed in order of their significance
    15171518         for identifying the application.
    15181519      </p>
    1519       <div id="rfc.figure.u.25"></div><pre class="inline"><span id="rfc.iref.g.19"></span>  Server         = "Server" ":" 1*( product | comment )
     1520      <div id="rfc.figure.u.26"></div><pre class="inline"><span id="rfc.iref.g.20"></span>  Server         = "Server" ":" 1*( product | comment )
    15201521</pre><p id="rfc.section.10.8.p.3">Example:</p>
    1521       <div id="rfc.figure.u.26"></div><pre class="text">    Server: CERN/3.0 libwww/2.17
    1522 </pre><p id="rfc.section.10.8.p.5">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the Server response-header. Instead, it <em class="bcp14">MUST</em> include a Via field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.24"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
     1522      <div id="rfc.figure.u.27"></div><pre class="text">    Server: CERN/3.0 libwww/2.17
     1523</pre><p id="rfc.section.10.8.p.5">If the response is being forwarded through a proxy, the proxy application <em class="bcp14">MUST NOT</em> modify the Server response-header. Instead, it <em class="bcp14">MUST</em> include a Via field (as described in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.23"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
    15231524      </p>
    15241525      <dl class="empty">
     
    15331534      <p id="rfc.section.10.9.p.1">The User-Agent request-header field contains information about the user agent originating the request. This is for statistical
    15341535         purposes, the tracing of protocol violations, and automated recognition of user agents for the sake of tailoring responses
    1535          to avoid particular user agent limitations. User agents <em class="bcp14">SHOULD</em> include this field with requests. The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.25"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the agent and any subproducts which form a significant part of the user agent. By convention, the
     1536         to avoid particular user agent limitations. User agents <em class="bcp14">SHOULD</em> include this field with requests. The field can contain multiple product tokens (<a href="p1-messaging.html#product.tokens" title="Product Tokens">Section 3.5</a> of <a href="#Part1" id="rfc.xref.Part1.24"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>) and comments identifying the agent and any subproducts which form a significant part of the user agent. By convention, the
    15361537         product tokens are listed in order of their significance for identifying the application.
    15371538      </p>
    1538       <div id="rfc.figure.u.27"></div><pre class="inline"><span id="rfc.iref.g.20"></span>  User-Agent     = "User-Agent" ":" 1*( product | comment )
     1539      <div id="rfc.figure.u.28"></div><pre class="inline"><span id="rfc.iref.g.21"></span>  User-Agent     = "User-Agent" ":" 1*( product | comment )
    15391540</pre><p id="rfc.section.10.9.p.3">Example:</p>
    1540       <div id="rfc.figure.u.28"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
     1541      <div id="rfc.figure.u.29"></div><pre class="text">    User-Agent: CERN-LineMode/2.15 libwww/2.17b3
    15411542</pre><h1 id="rfc.section.11"><a href="#rfc.section.11">11.</a>&nbsp;<a id="IANA.considerations" href="#IANA.considerations">IANA Considerations</a></h1>
    15421543      <p id="rfc.section.11.p.1"> <span class="comment">[rfc.comment.1: TBD.]</span>
     
    17141715      </p>
    17151716      <p id="rfc.section.A.2.p.4">In the description of the Server header, the Via field was described as a SHOULD. The requirement was and is stated correctly
    1716          in the description of the Via header in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.26"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.3" title="Server">Section&nbsp;10.8</a>)
     1717         in the description of the Via header in <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a> of <a href="#Part1" id="rfc.xref.Part1.25"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. (<a href="#header.server" id="rfc.xref.header.server.3" title="Server">Section&nbsp;10.8</a>)
    17171718      </p>
    17181719      <h1 id="rfc.section.B"><a href="#rfc.section.B">B.</a>&nbsp;Change Log (to be removed by RFC Editor before publication)
     
    17621763         <li>Move "Product Tokens" section (back) into Part 1, as "token" is used in the definition of the Upgrade header.</li>
    17631764         <li>Add explicit references to BNF syntax and rules imported from other parts of the specification.</li>
    1764          <li>Move definition of "delta-seconds" into Part1 as a common BNF element.</li>
     1765         <li>Copy definition of delta-seconds from Part6 instead of referencing it.</li>
    17651766      </ul>
    17661767      <h1><a id="rfc.copyright" href="#rfc.copyright">Full Copyright Statement</a></h1>
     
    18771878                     <ul class="ind">
    18781879                        <li class="indline1"><tt>Allow</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>10.1</b></a></li>
     1880                        <li class="indline1"><tt>delta-seconds</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>10.7</b></a></li>
    18791881                        <li class="indline1"><tt>Expect</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>10.2</b></a></li>
    18801882                        <li class="indline1"><tt>expect-params</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>10.2</b></a></li>
     
    18921894                        <li class="indline1"><tt>response-header</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>6</b></a></li>
    18931895                        <li class="indline1"><tt>Retry-After</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>10.7</b></a></li>
    1894                         <li class="indline1"><tt>Server</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>10.8</b></a></li>
     1896                        <li class="indline1"><tt>Server</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>10.8</b></a></li>
    18951897                        <li class="indline1"><tt>Status-Code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>5</b></a></li>
    1896                         <li class="indline1"><tt>User-Agent</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.20"><b>10.9</b></a></li>
     1898                        <li class="indline1"><tt>User-Agent</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.21"><b>10.9</b></a></li>
    18971899                     </ul>
    18981900                  </li>
     
    19461948            </li>
    19471949            <li class="indline0"><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul class="ind">
    1948                   <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">1</a>, <a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a>, <a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a>, <a class="iref" href="#rfc.xref.Part1.14">2</a>, <a class="iref" href="#rfc.xref.Part1.15">2</a>, <a class="iref" href="#rfc.xref.Part1.16">4</a>, <a class="iref" href="#rfc.xref.Part1.17">4</a>, <a class="iref" href="#rfc.xref.Part1.18">7</a>, <a class="iref" href="#rfc.xref.Part1.19">8.8</a>, <a class="iref" href="#rfc.xref.Part1.20">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.21">9.5.6</a>, <a class="iref" href="#rfc.xref.Part1.22">10.2</a>, <a class="iref" href="#rfc.xref.Part1.23">10.8</a>, <a class="iref" href="#rfc.xref.Part1.24">10.8</a>, <a class="iref" href="#rfc.xref.Part1.25">10.9</a>, <a class="iref" href="#Part1"><b>14.1</b></a>, <a class="iref" href="#rfc.xref.Part1.26">A.2</a><ul class="ind">
     1950                  <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">1</a>, <a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a>, <a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a>, <a class="iref" href="#rfc.xref.Part1.14">2</a>, <a class="iref" href="#rfc.xref.Part1.15">4</a>, <a class="iref" href="#rfc.xref.Part1.16">4</a>, <a class="iref" href="#rfc.xref.Part1.17">7</a>, <a class="iref" href="#rfc.xref.Part1.18">8.8</a>, <a class="iref" href="#rfc.xref.Part1.19">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.20">9.5.6</a>, <a class="iref" href="#rfc.xref.Part1.21">10.2</a>, <a class="iref" href="#rfc.xref.Part1.22">10.8</a>, <a class="iref" href="#rfc.xref.Part1.23">10.8</a>, <a class="iref" href="#rfc.xref.Part1.24">10.9</a>, <a class="iref" href="#Part1"><b>14.1</b></a>, <a class="iref" href="#rfc.xref.Part1.25">A.2</a><ul class="ind">
    19491951                        <li class="indline1"><em>Section 2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.2">2</a></li>
    19501952                        <li class="indline1"><em>Section 2.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a></li>
    1951                         <li class="indline1"><em>Section 3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.21">9.5.6</a></li>
    1952                         <li class="indline1"><em>Section 3.2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.14">2</a></li>
    1953                         <li class="indline1"><em>Section 3.3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.12">2</a></li>
    1954                         <li class="indline1"><em>Section 3.3.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.9">2</a></li>
    1955                         <li class="indline1"><em>Section 3.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.13">2</a>, <a class="iref" href="#rfc.xref.Part1.23">10.8</a>, <a class="iref" href="#rfc.xref.Part1.25">10.9</a></li>
    1956                         <li class="indline1"><em>Section 4.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.18">7</a></li>
    1957                         <li class="indline1"><em>Section 7.2.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.20">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.22">10.2</a></li>
    1958                         <li class="indline1"><em>Section 8.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.16">4</a></li>
    1959                         <li class="indline1"><em>Section 8.8</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.15">2</a>, <a class="iref" href="#rfc.xref.Part1.17">4</a></li>
    1960                         <li class="indline1"><em>Section 8.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.19">8.8</a>, <a class="iref" href="#rfc.xref.Part1.24">10.8</a>, <a class="iref" href="#rfc.xref.Part1.26">A.2</a></li>
     1953                        <li class="indline1"><em>Section 3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.20">9.5.6</a></li>
     1954                        <li class="indline1"><em>Section 3.2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a></li>
     1955                        <li class="indline1"><em>Section 3.3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.11">2</a></li>
     1956                        <li class="indline1"><em>Section 3.5</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.22">10.8</a>, <a class="iref" href="#rfc.xref.Part1.24">10.9</a></li>
     1957                        <li class="indline1"><em>Section 4.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.17">7</a></li>
     1958                        <li class="indline1"><em>Section 7.2.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.19">9.1.1</a>, <a class="iref" href="#rfc.xref.Part1.21">10.2</a></li>
     1959                        <li class="indline1"><em>Section 8.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.15">4</a></li>
     1960                        <li class="indline1"><em>Section 8.8</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.14">2</a>, <a class="iref" href="#rfc.xref.Part1.16">4</a></li>
     1961                        <li class="indline1"><em>Section 8.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.18">8.8</a>, <a class="iref" href="#rfc.xref.Part1.23">10.8</a>, <a class="iref" href="#rfc.xref.Part1.25">A.2</a></li>
    19611962                     </ul>
    19621963                  </li>
  • draft-ietf-httpbis/latest/p2-semantics.xml

    r210 r212  
    2727  <!ENTITY uri                        "<xref target='Part1' x:rel='#uri' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    2828  <!ENTITY full-date                  "<xref target='Part1' x:rel='#full.date' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    29   <!ENTITY time-spans                 "<xref target='Part1' x:rel='#time.spans' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    3029  <!ENTITY http-url                   "<xref target='Part1' x:rel='#http-url' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    3130  <!ENTITY http-version               "<xref target='Part1' x:rel='#http.version' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
     
    311310<figure><!--Part1--><artwork type="abnf2616">
    312311  absoluteURI   = &lt;absoluteURI, defined in &general-syntax;&gt;
    313   delta-seconds = &lt;delta-seconds, defined in &time-spans;&gt;
    314312  fragment      = &lt;fragment, defined in &general-syntax;&gt;
    315313  Host          = &lt;Host, defined in &header-host;&gt;
     
    19441942</t>
    19451943<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="Retry-After"/>
    1946   Retry-After  = "Retry-After" ":" ( HTTP-date | delta-seconds )
     1944  Retry-After   = "Retry-After" ":" ( HTTP-date | delta-seconds )
     1945</artwork></figure>
     1946<t>
     1947   Time spans are non-negative decimal integers, representing time in
     1948   seconds.
     1949</t>
     1950<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="delta-seconds"/>
     1951  delta-seconds  = 1*DIGIT
    19471952</artwork></figure>
    19481953<t>
     
    26952700    </t>
    26962701    <t>
    2697       Move definition of "delta-seconds" into Part1 as a common BNF element.
     2702      Copy definition of delta-seconds from Part6 instead of referencing it.
    26982703    </t>
    26992704  </list>
  • draft-ietf-httpbis/latest/p6-cache.html

    r210 r212  
    688688         <p id="rfc.section.2.p.4">The ABNF rules below are defined in other parts:</p>
    689689      </div>
    690       <div id="rfc.figure.u.3"></div><pre class="inline">  delta-seconds = &lt;delta-seconds, defined in <a href="#Part1" id="rfc.xref.Part1.8"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#time.spans" title="Time Spans">Section 3.3.2</a>&gt;
    691   field-name    = &lt;field-name, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#message.headers" title="Message Headers">Section 4.2</a>&gt;
    692   HTTP-date     = &lt;HTTP-date, defined in <a href="#Part1" id="rfc.xref.Part1.10"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a>&gt;
    693   port          = &lt;port, defined in <a href="#Part1" id="rfc.xref.Part1.11"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
    694   pseudonym     = &lt;pseudonym, defined in <a href="#Part1" id="rfc.xref.Part1.12"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a>&gt;
    695   uri-host      = &lt;uri-host, defined in <a href="#Part1" id="rfc.xref.Part1.13"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     690      <div id="rfc.figure.u.3"></div><pre class="inline">  field-name    = &lt;field-name, defined in <a href="#Part1" id="rfc.xref.Part1.8"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#message.headers" title="Message Headers">Section 4.2</a>&gt;
     691  HTTP-date     = &lt;HTTP-date, defined in <a href="#Part1" id="rfc.xref.Part1.9"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a>&gt;
     692  port          = &lt;port, defined in <a href="#Part1" id="rfc.xref.Part1.10"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
     693  pseudonym     = &lt;pseudonym, defined in <a href="#Part1" id="rfc.xref.Part1.11"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#header.via" title="Via">Section 8.9</a>&gt;
     694  uri-host      = &lt;uri-host, defined in <a href="#Part1" id="rfc.xref.Part1.12"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="p1-messaging.html#general.syntax" title="General Syntax">Section 3.2.1</a>&gt;
    696695</pre><h1 id="rfc.section.3"><a href="#rfc.section.3">3.</a>&nbsp;<a id="caching.overview" href="#caching.overview">Overview</a></h1>
    697696      <h2 id="rfc.section.3.1"><a href="#rfc.section.3.1">3.1</a>&nbsp;<a id="cache.correctness" href="#cache.correctness">Cache Correctness</a></h2>
     
    834833      </p>
    835834      <p id="rfc.section.4.3.p.3">HTTP/1.1 requires origin servers to send a Date header, if possible, with every response, giving the time at which the response
    836          was generated (see <a href="p1-messaging.html#header.date" title="Date">Section 8.3</a> of <a href="#Part1" id="rfc.xref.Part1.14"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). We use the term "date_value" to denote the value of the Date header, in a form appropriate for arithmetic operations.
     835         was generated (see <a href="p1-messaging.html#header.date" title="Date">Section 8.3</a> of <a href="#Part1" id="rfc.xref.Part1.13"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>). We use the term "date_value" to denote the value of the Date header, in a form appropriate for arithmetic operations.
    837836      </p>
    838837      <p id="rfc.section.4.3.p.4">HTTP/1.1 uses the Age response-header to convey the estimated age of the response message when obtained from a cache. The
     
    10061005      </ul>
    10071006      <p id="rfc.section.7.1.p.3">All other headers defined by HTTP/1.1 are end-to-end headers.</p>
    1008       <p id="rfc.section.7.1.p.4">Other hop-by-hop headers <em class="bcp14">MUST</em> be listed in a Connection header (<a href="p1-messaging.html#header.connection" title="Connection">Section 8.1</a> of <a href="#Part1" id="rfc.xref.Part1.15"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
     1007      <p id="rfc.section.7.1.p.4">Other hop-by-hop headers <em class="bcp14">MUST</em> be listed in a Connection header (<a href="p1-messaging.html#header.connection" title="Connection">Section 8.1</a> of <a href="#Part1" id="rfc.xref.Part1.14"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
    10091008      </p>
    10101009      <h2 id="rfc.section.7.2"><a href="#rfc.section.7.2">7.2</a>&nbsp;<a id="non-modifiable.headers" href="#non-modifiable.headers">Non-modifiable Headers</a></h2>
     
    10411040         </dd>
    10421041      </dl>
    1043       <p id="rfc.section.7.2.p.7">The Content-Length field of a request or response is added or deleted according to the rules in <a href="p1-messaging.html#message.length" title="Message Length">Section 4.4</a> of <a href="#Part1" id="rfc.xref.Part1.16"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. A transparent proxy <em class="bcp14">MUST</em> preserve the entity-length (<a href="p3-payload.html#entity.length" title="Entity Length">Section 4.2.2</a> of <a href="#Part3" id="rfc.xref.Part3.1"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>) of the entity-body, although it <em class="bcp14">MAY</em> change the transfer-length (<a href="p1-messaging.html#message.length" title="Message Length">Section 4.4</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
     1042      <p id="rfc.section.7.2.p.7">The Content-Length field of a request or response is added or deleted according to the rules in <a href="p1-messaging.html#message.length" title="Message Length">Section 4.4</a> of <a href="#Part1" id="rfc.xref.Part1.15"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>. A transparent proxy <em class="bcp14">MUST</em> preserve the entity-length (<a href="p3-payload.html#entity.length" title="Entity Length">Section 4.2.2</a> of <a href="#Part3" id="rfc.xref.Part3.1"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a>) of the entity-body, although it <em class="bcp14">MAY</em> change the transfer-length (<a href="p1-messaging.html#message.length" title="Message Length">Section 4.4</a> of <a href="#Part1" id="rfc.xref.Part1.16"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>).
    10441043      </p>
    10451044      <h2 id="rfc.section.7.3"><a href="#rfc.section.7.3">7.3</a>&nbsp;<a id="combining.headers" href="#combining.headers">Combining Headers</a></h2>
     
    10891088         request can be transformed to the selecting request-headers in the second request by adding or removing linear white space
    10901089         (LWS) at places where this is allowed by the corresponding BNF, and/or combining multiple message-header fields with the same
    1091          field name following the rules about message headers in <a href="p1-messaging.html#message.headers" title="Message Headers">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
     1090         field name following the rules about message headers in <a href="p1-messaging.html#message.headers" title="Message Headers">Section 4.2</a> of <a href="#Part1" id="rfc.xref.Part1.17"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>.
    10921091      </p>
    10931092      <p id="rfc.section.8.p.5">A Vary header field-value of "*" always fails to match and subsequent requests on that resource can only be properly interpreted
     
    12071206  age-value = delta-seconds
    12081207</pre><p id="rfc.section.16.1.p.3">Age values are non-negative decimal integers, representing time in seconds.</p>
    1209       <p id="rfc.section.16.1.p.4">If a cache receives a value larger than the largest positive integer it can represent, or if any of its age calculations overflows,
     1208      <div id="rfc.figure.u.13"></div><pre class="inline"><span id="rfc.iref.g.3"></span>  delta-seconds  = 1*DIGIT
     1209</pre><p id="rfc.section.16.1.p.5">If a cache receives a value larger than the largest positive integer it can represent, or if any of its age calculations overflows,
    12101210         it <em class="bcp14">MUST</em> transmit an Age header with a value of 2147483648 (2^31). An HTTP/1.1 server that includes a cache <em class="bcp14">MUST</em> include an Age header field in every response generated from its own cache. Caches <em class="bcp14">SHOULD</em> use an arithmetic type of at least 31 bits of range.
    12111211      </p>
     
    12261226         a specific cache.
    12271227      </p>
    1228       <div id="rfc.figure.u.13"></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><span id="rfc.iref.g.6"></span><span id="rfc.iref.g.7"></span>  Cache-Control   = "Cache-Control" ":" 1#cache-directive
     1228      <div id="rfc.figure.u.14"></div><pre class="inline"><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span><span id="rfc.iref.g.6"></span><span id="rfc.iref.g.7"></span><span id="rfc.iref.g.8"></span>  Cache-Control   = "Cache-Control" ":" 1#cache-directive
    12291229
    12301230  cache-directive = cache-request-directive
     
    15101510         an otherwise private response in their shared cache(s) could do so by including
    15111511      </p>
    1512       <div id="rfc.figure.u.14"></div><pre class="text">    Cache-Control: private, community="UCI"
     1512      <div id="rfc.figure.u.15"></div><pre class="text">    Cache-Control: private, community="UCI"
    15131513</pre><p id="rfc.section.16.2.6.p.5">A cache seeing this header field will act correctly even if the cache does not understand the community cache-extension, since
    15141514         it will also see and understand the private directive and thus default to the safe behavior.
     
    15281528         that time.
    15291529      </p>
    1530       <p id="rfc.section.16.3.p.3">The format is an absolute date and time as defined by HTTP-date in <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.19"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
    1531       </p>
    1532       <div id="rfc.figure.u.15"></div><pre class="inline"><span id="rfc.iref.g.8"></span>  Expires = "Expires" ":" HTTP-date
     1530      <p id="rfc.section.16.3.p.3">The format is an absolute date and time as defined by HTTP-date in <a href="p1-messaging.html#full.date" title="Full Date">Section 3.3.1</a> of <a href="#Part1" id="rfc.xref.Part1.18"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>; it <em class="bcp14">MUST</em> be sent in rfc1123-date format.
     1531      </p>
     1532      <div id="rfc.figure.u.16"></div><pre class="inline"><span id="rfc.iref.g.9"></span>  Expires = "Expires" ":" HTTP-date
    15331533</pre><p id="rfc.section.16.3.p.5">An example of its use is</p>
    1534       <div id="rfc.figure.u.16"></div><pre class="text">   Expires: Thu, 01 Dec 1994 16:00:00 GMT
     1534      <div id="rfc.figure.u.17"></div><pre class="text">   Expires: Thu, 01 Dec 1994 16:00:00 GMT
    15351535</pre><p id="rfc.section.16.3.p.7"> </p>
    15361536      <dl class="empty">
     
    15571557         systems <em class="bcp14">MAY</em> require that behavior be consistent with the directives.
    15581558      </p>
    1559       <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.9"></span><span id="rfc.iref.g.10"></span><span id="rfc.iref.g.11"></span>  Pragma            = "Pragma" ":" 1#pragma-directive
     1559      <div id="rfc.figure.u.18"></div><pre class="inline"><span id="rfc.iref.g.10"></span><span id="rfc.iref.g.11"></span><span id="rfc.iref.g.12"></span>  Pragma            = "Pragma" ":" 1#pragma-directive
    15601560  pragma-directive  = "no-cache" | extension-pragma
    15611561  extension-pragma  = token [ "=" ( token | quoted-string ) ]
     
    15841584         appropriate representation. See <a href="#caching.negotiated.responses" title="Caching Negotiated Responses">Section&nbsp;8</a> for use of the Vary header field by caches.
    15851585      </p>
    1586       <div id="rfc.figure.u.18"></div><pre class="inline"><span id="rfc.iref.g.12"></span>  Vary  = "Vary" ":" ( "*" | 1#field-name )
     1586      <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.13"></span>  Vary  = "Vary" ":" ( "*" | 1#field-name )
    15871587</pre><p id="rfc.section.16.5.p.3">An HTTP/1.1 server <em class="bcp14">SHOULD</em> include a Vary header field with any cacheable response that is subject to server-driven negotiation. Doing so allows a cache
    15881588         to properly interpret future requests on that resource and informs the user agent about the presence of negotiation on that
     
    16091609      </p>
    16101610      <p id="rfc.section.16.6.p.2">Warning headers are sent with responses using:</p>
    1611       <div id="rfc.figure.u.19"></div><pre class="inline"><span id="rfc.iref.g.13"></span><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>  Warning    = "Warning" ":" 1#warning-value
     1611      <div id="rfc.figure.u.20"></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>  Warning    = "Warning" ":" 1#warning-value
    16121612 
    16131613  warning-value = warn-code SP warn-agent SP warn-text
     
    17951795      <p id="rfc.section.A.1.p.2">Transfer-coding and message lengths all interact in ways that required fixing exactly when chunked encoding is used (to allow
    17961796         for transfer encoding that may not be self delimiting); it was important to straighten out exactly how message lengths are
    1797          computed. (<a href="#non-modifiable.headers" title="Non-modifiable Headers">Section&nbsp;7.2</a>, see also <a href="#Part1" id="rfc.xref.Part1.20"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="#Part3" id="rfc.xref.Part3.3"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a> and <a href="#Part5" id="rfc.xref.Part5.3"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>)
     1797         computed. (<a href="#non-modifiable.headers" title="Non-modifiable Headers">Section&nbsp;7.2</a>, see also <a href="#Part1" id="rfc.xref.Part1.19"><cite title="HTTP/1.1, part 1: URIs, Connections, and Message Parsing">[Part1]</cite></a>, <a href="#Part3" id="rfc.xref.Part3.3"><cite title="HTTP/1.1, part 3: Message Payload and Content Negotiation">[Part3]</cite></a> and <a href="#Part5" id="rfc.xref.Part5.3"><cite title="HTTP/1.1, part 5: Range Requests and Partial Responses">[Part5]</cite></a>)
    17981798      </p>
    17991799      <p id="rfc.section.A.1.p.3">Proxies should be able to add Content-Length when appropriate. (<a href="#non-modifiable.headers" title="Non-modifiable Headers">Section&nbsp;7.2</a>)
     
    18501850         </li>
    18511851      </ul>
    1852       <p id="rfc.section.B.3.p.2">Ongoing work on ABNF conversion (&lt;<a href="http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36">http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;):
    1853       </p>
     1852      <p id="rfc.section.B.3.p.2">Other changes: </p>
    18541853      <ul>
    1855          <li>Get rid of duplicate BNF rule names ("host" -&gt; "uri-host").</li>
     1854         <li>Get rid of duplicate BNF rule names ("host" -&gt; "uri-host") (work in progress on &lt;<a href="http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36">http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36</a>&gt;)
     1855         </li>
    18561856         <li>Add explicit references to BNF syntax and rules imported from other parts of the specification.</li>
    1857          <li>Move definition of "delta-seconds" into Part1 as a common BNF element.</li>
    18581857      </ul>
    18591858      <h1><a id="rfc.copyright" href="#rfc.copyright">Full Copyright Statement</a></h1>
     
    19321931                        <li class="indline1"><tt>Age</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.1"><b>16.1</b></a></li>
    19331932                        <li class="indline1"><tt>age-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.2"><b>16.1</b></a></li>
    1934                         <li class="indline1"><tt>Cache-Control</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>16.2</b></a></li>
    1935                         <li class="indline1"><tt>cache-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>16.2</b></a></li>
    1936                         <li class="indline1"><tt>cache-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>16.2</b></a></li>
    1937                         <li class="indline1"><tt>cache-request-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>16.2</b></a></li>
    1938                         <li class="indline1"><tt>cache-response-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>16.2</b></a></li>
    1939                         <li class="indline1"><tt>Expires</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>16.3</b></a></li>
    1940                         <li class="indline1"><tt>extension-pragma</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>16.4</b></a></li>
    1941                         <li class="indline1"><tt>Pragma</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>16.4</b></a></li>
    1942                         <li class="indline1"><tt>pragma-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>16.4</b></a></li>
    1943                         <li class="indline1"><tt>Vary</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>16.5</b></a></li>
    1944                         <li class="indline1"><tt>warn-agent</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>16.6</b></a></li>
    1945                         <li class="indline1"><tt>warn-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>16.6</b></a></li>
    1946                         <li class="indline1"><tt>warn-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>16.6</b></a></li>
    1947                         <li class="indline1"><tt>warn-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>16.6</b></a></li>
    1948                         <li class="indline1"><tt>Warning</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>16.6</b></a></li>
    1949                         <li class="indline1"><tt>warning-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>16.6</b></a></li>
     1933                        <li class="indline1"><tt>Cache-Control</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.4"><b>16.2</b></a></li>
     1934                        <li class="indline1"><tt>cache-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.5"><b>16.2</b></a></li>
     1935                        <li class="indline1"><tt>cache-extension</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.8"><b>16.2</b></a></li>
     1936                        <li class="indline1"><tt>cache-request-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.6"><b>16.2</b></a></li>
     1937                        <li class="indline1"><tt>cache-response-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.7"><b>16.2</b></a></li>
     1938                        <li class="indline1"><tt>delta-seconds</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.3"><b>16.1</b></a></li>
     1939                        <li class="indline1"><tt>Expires</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.9"><b>16.3</b></a></li>
     1940                        <li class="indline1"><tt>extension-pragma</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.12"><b>16.4</b></a></li>
     1941                        <li class="indline1"><tt>Pragma</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.10"><b>16.4</b></a></li>
     1942                        <li class="indline1"><tt>pragma-directive</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.11"><b>16.4</b></a></li>
     1943                        <li class="indline1"><tt>Vary</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.13"><b>16.5</b></a></li>
     1944                        <li class="indline1"><tt>warn-agent</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.17"><b>16.6</b></a></li>
     1945                        <li class="indline1"><tt>warn-code</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.16"><b>16.6</b></a></li>
     1946                        <li class="indline1"><tt>warn-date</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.19"><b>16.6</b></a></li>
     1947                        <li class="indline1"><tt>warn-text</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.18"><b>16.6</b></a></li>
     1948                        <li class="indline1"><tt>Warning</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.14"><b>16.6</b></a></li>
     1949                        <li class="indline1"><tt>warning-value</tt>&nbsp;&nbsp;<a class="iref" href="#rfc.iref.g.15"><b>16.6</b></a></li>
    19501950                     </ul>
    19511951                  </li>
     
    20202020            </li>
    20212021            <li class="indline0"><a id="rfc.index.P" href="#rfc.index.P"><b>P</b></a><ul class="ind">
    2022                   <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">2</a>, <a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a>, <a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a>, <a class="iref" href="#rfc.xref.Part1.14">4.3</a>, <a class="iref" href="#rfc.xref.Part1.15">7.1</a>, <a class="iref" href="#rfc.xref.Part1.16">7.2</a>, <a class="iref" href="#rfc.xref.Part1.17">7.2</a>, <a class="iref" href="#rfc.xref.Part1.18">8</a>, <a class="iref" href="#rfc.xref.Part1.19">16.3</a>, <a class="iref" href="#Part1"><b>20.1</b></a>, <a class="iref" href="#rfc.xref.Part1.20">A.1</a><ul class="ind">
     2022                  <li class="indline1"><em>Part1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">2</a>, <a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a>, <a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.12">2</a>, <a class="iref" href="#rfc.xref.Part1.13">4.3</a>, <a class="iref" href="#rfc.xref.Part1.14">7.1</a>, <a class="iref" href="#rfc.xref.Part1.15">7.2</a>, <a class="iref" href="#rfc.xref.Part1.16">7.2</a>, <a class="iref" href="#rfc.xref.Part1.17">8</a>, <a class="iref" href="#rfc.xref.Part1.18">16.3</a>, <a class="iref" href="#Part1"><b>20.1</b></a>, <a class="iref" href="#rfc.xref.Part1.19">A.1</a><ul class="ind">
    20232023                        <li class="indline1"><em>Section 2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.1">2</a></li>
    20242024                        <li class="indline1"><em>Section 2.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.2">2</a>, <a class="iref" href="#rfc.xref.Part1.3">2</a>, <a class="iref" href="#rfc.xref.Part1.4">2</a>, <a class="iref" href="#rfc.xref.Part1.5">2</a>, <a class="iref" href="#rfc.xref.Part1.6">2</a>, <a class="iref" href="#rfc.xref.Part1.7">2</a></li>
    2025                         <li class="indline1"><em>Section 3.2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.11">2</a>, <a class="iref" href="#rfc.xref.Part1.13">2</a></li>
    2026                         <li class="indline1"><em>Section 3.3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.19">16.3</a></li>
    2027                         <li class="indline1"><em>Section 3.3.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.8">2</a></li>
    2028                         <li class="indline1"><em>Section 4.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.18">8</a></li>
    2029                         <li class="indline1"><em>Section 4.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.16">7.2</a>, <a class="iref" href="#rfc.xref.Part1.17">7.2</a></li>
    2030                         <li class="indline1"><em>Section 8.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.15">7.1</a></li>
    2031                         <li class="indline1"><em>Section 8.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.14">4.3</a></li>
    2032                         <li class="indline1"><em>Section 8.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.12">2</a></li>
     2025                        <li class="indline1"><em>Section 3.2.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.10">2</a>, <a class="iref" href="#rfc.xref.Part1.12">2</a></li>
     2026                        <li class="indline1"><em>Section 3.3.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.9">2</a>, <a class="iref" href="#rfc.xref.Part1.18">16.3</a></li>
     2027                        <li class="indline1"><em>Section 4.2</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.8">2</a>, <a class="iref" href="#rfc.xref.Part1.17">8</a></li>
     2028                        <li class="indline1"><em>Section 4.4</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.15">7.2</a>, <a class="iref" href="#rfc.xref.Part1.16">7.2</a></li>
     2029                        <li class="indline1"><em>Section 8.1</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.14">7.1</a></li>
     2030                        <li class="indline1"><em>Section 8.3</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.13">4.3</a></li>
     2031                        <li class="indline1"><em>Section 8.9</em>&nbsp;&nbsp;<a class="iref" href="#rfc.xref.Part1.11">2</a></li>
    20332032                     </ul>
    20342033                  </li>
  • draft-ietf-httpbis/latest/p6-cache.xml

    r210 r212  
    1818  <!ENTITY basic-rules                 "<xref target='Part1' x:rel='#basic.rules' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    1919  <!ENTITY general-syntax              "<xref target='Part1' x:rel='#general.syntax' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    20   <!ENTITY time-spans                  "<xref target='Part1' x:rel='#time.spans' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    2120  <!ENTITY messaging                   "<xref target='Part1' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
    2221  <!ENTITY conditional                 "<xref target='Part4' xmlns:x='http://purl.org/net/xml2rfc/ext'/>">
     
    449448</t>
    450449<figure><!--Part1--><artwork type="abnf2616">
    451   delta-seconds = &lt;delta-seconds, defined in &time-spans;&gt;
    452450  field-name    = &lt;field-name, defined in &message-headers;&gt;
    453451  HTTP-date     = &lt;HTTP-date, defined in &full-date;&gt;
     
    15101508      seconds.
    15111509</t>
     1510<figure><artwork type="abnf2616"><iref primary="true" item="Grammar" subitem="delta-seconds"/>
     1511  delta-seconds  = 1*DIGIT
     1512</artwork></figure>
    15121513<t>
    15131514      If a cache receives a value larger than the largest positive
     
    28902891</t>
    28912892<t>
    2892   Ongoing work on ABNF conversion (<eref target="http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36"/>):
     2893  Other changes:
    28932894  <list style="symbols">
    28942895    <t>
    2895       Get rid of duplicate BNF rule names ("host" -> "uri-host").
     2896       Get rid of duplicate BNF rule names ("host" -> "uri-host")
     2897       (work in progress on <eref target="http://www3.tools.ietf.org/wg/httpbis/trac/ticket/36"/>)
    28962898    </t>
    28972899    <t>
    28982900      Add explicit references to BNF syntax and rules imported from other parts of the specification.
    28992901    </t>
    2900     <t>
    2901       Move definition of "delta-seconds" into Part1 as a common BNF element.
    2902     </t>
    29032902  </list>
    29042903</t>
Note: See TracChangeset for help on using the changeset viewer.