Ignore:
Timestamp:
30/03/11 07:07:10 (10 years ago)
Author:
julian.reschke@…
Message:

rewrite header field ABNFs to only specify the field value (see #276)

File:
1 edited

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  • draft-ietf-httpbis/latest/p4-conditional.html

    r1226 r1233  
    359359  }
    360360  @bottom-center {
    361        content: "Expires September 29, 2011";
     361       content: "Expires October 1, 2011";
    362362  }
    363363  @bottom-right {
    … …  
    406406      <meta name="dct.creator" content="Reschke, J. F.">
    407407      <meta name="dct.identifier" content="urn:ietf:id:draft-ietf-httpbis-p4-conditional-latest">
    408       <meta name="dct.issued" scheme="ISO8601" content="2011-03-28">
     408      <meta name="dct.issued" scheme="ISO8601" content="2011-03-30">
    409409      <meta name="dct.replaces" content="urn:ietf:rfc:2616">
    410410      <meta name="dct.abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. HTTP has been in use by the World Wide Web global information initiative since 1990. This document is Part 4 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 4 defines request header fields for indicating conditional requests and the rules for constructing responses to those requests.">
    … …  
    432432            </tr>
    433433            <tr>
    434                <td class="left">Expires: September 29, 2011</td>
     434               <td class="left">Expires: October 1, 2011</td>
    435435               <td class="right">J. Mogul</td>
    436436            </tr>
    … …  
    489489            <tr>
    490490               <td class="left"></td>
    491                <td class="right">March 28, 2011</td>
     491               <td class="right">March 30, 2011</td>
    492492            </tr>
    493493         </tbody>
    … …  
    515515         in progress”.
    516516      </p>
    517       <p>This Internet-Draft will expire on September 29, 2011.</p>
     517      <p>This Internet-Draft will expire on October 1, 2011.</p>
    518518      <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1>
    519519      <p>Copyright © 2011 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
    … …  
    910910         between representations of the same resource that vary over time or via content negotiation (see <a href="#weak.and.strong.validators" title="Weak and Strong Validators">Section&nbsp;4</a>).
    911911      </p>
    912       <div id="rfc.figure.u.7"></div><pre class="inline"><span id="rfc.iref.g.4"></span><span id="rfc.iref.g.5"></span>  <a href="#header.etag" class="smpl">ETag</a>   = "ETag" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.etag" class="smpl">ETag-v</a>
    913   <a href="#header.etag" class="smpl">ETag-v</a> = <a href="#entity.tags" class="smpl">entity-tag</a>
     912      <div id="rfc.figure.u.7"></div><pre class="inline"><span id="rfc.iref.g.4"></span>  <a href="#header.etag" class="smpl">ETag</a> = <a href="#entity.tags" class="smpl">entity-tag</a>
    914913</pre><div id="rfc.figure.u.8"></div>
    915914      <p>Examples:</p>  <pre class="text">  ETag: "xyzzy"
    … …  
    933932         An If-Match field-value of "*" places the precondition on the existence of any current representation for the target resource.
    934933      </p>
    935       <div id="rfc.figure.u.9"></div><pre class="inline"><span id="rfc.iref.g.6"></span><span id="rfc.iref.g.7"></span>  <a href="#header.if-match" class="smpl">If-Match</a>   = "If-Match" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.if-match" class="smpl">If-Match-v</a>
    936   <a href="#header.if-match" class="smpl">If-Match-v</a> = "*" / 1#<a href="#entity.tags" class="smpl">entity-tag</a>
     934      <div id="rfc.figure.u.9"></div><pre class="inline"><span id="rfc.iref.g.5"></span>  <a href="#header.if-match" class="smpl">If-Match</a> = "*" / 1#<a href="#entity.tags" class="smpl">entity-tag</a>
    937935</pre><p id="rfc.section.6.2.p.3">If any of the entity-tags listed in the If-Match field value match the entity-tag of the selected representation for the target
    938936         resource, or if "*" is given and any current representation exists for the target resource, then the server <em class="bcp14">MAY</em> perform the request method as if the If-Match header field was not present.
    … …  
    956954         the time specified in this field, then do not perform the request method; instead, respond as detailed below.
    957955      </p>
    958       <div id="rfc.figure.u.11"></div><pre class="inline"><span id="rfc.iref.g.8"></span><span id="rfc.iref.g.9"></span>  <a href="#header.if-modified-since" class="smpl">If-Modified-Since</a>   = "If-Modified-Since" ":" <a href="#core.rules" class="smpl">OWS</a>
    959                         <a href="#header.if-modified-since" class="smpl">If-Modified-Since-v</a>
    960   <a href="#header.if-modified-since" class="smpl">If-Modified-Since-v</a> = <a href="#abnf.dependencies" class="smpl">HTTP-date</a>
     956      <div id="rfc.figure.u.11"></div><pre class="inline"><span id="rfc.iref.g.6"></span>  <a href="#header.if-modified-since" class="smpl">If-Modified-Since</a> = <a href="#abnf.dependencies" class="smpl">HTTP-date</a>
    961957</pre><p id="rfc.section.6.3.p.3">An example of the field is:</p>
    962958      <div id="rfc.figure.u.12"></div><pre class="text">  If-Modified-Since: Sat, 29 Oct 1994 19:43:31 GMT
    … …  
    10131009         for the target resource.
    10141010      </p>
    1015       <div id="rfc.figure.u.13"></div><pre class="inline"><span id="rfc.iref.g.10"></span><span id="rfc.iref.g.11"></span>  <a href="#header.if-none-match" class="smpl">If-None-Match</a>   = "If-None-Match" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.if-none-match" class="smpl">If-None-Match-v</a>
    1016   <a href="#header.if-none-match" class="smpl">If-None-Match-v</a> = "*" / 1#<a href="#entity.tags" class="smpl">entity-tag</a>
     1011      <div id="rfc.figure.u.13"></div><pre class="inline"><span id="rfc.iref.g.7"></span>  <a href="#header.if-none-match" class="smpl">If-None-Match</a> = "*" / 1#<a href="#entity.tags" class="smpl">entity-tag</a>
    10171012</pre><p id="rfc.section.6.4.p.4">If any of the entity-tags listed in the If-None-Match field-value match the entity-tag of the selected representation, or
    10181013         if "*" is given and any current representation exists for that resource, then the server <em class="bcp14">MUST NOT</em> perform the requested method. Instead, if the request method was GET or HEAD, the server <em class="bcp14">SHOULD</em> respond with a 304 (Not Modified) status code, including the cache-related header fields (particularly ETag) of the selected
    … …  
    10401035         the time specified in this field, the server <em class="bcp14">SHOULD</em> perform the request method as if the If-Unmodified-Since header field were not present.
    10411036      </p>
    1042       <div id="rfc.figure.u.15"></div><pre class="inline"><span id="rfc.iref.g.12"></span><span id="rfc.iref.g.13"></span>  <a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since</a>   = "If-Unmodified-Since" ":" <a href="#core.rules" class="smpl">OWS</a>
    1043                           <a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since-v</a>
    1044   <a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since-v</a> = <a href="#abnf.dependencies" class="smpl">HTTP-date</a>
     1037      <div id="rfc.figure.u.15"></div><pre class="inline"><span id="rfc.iref.g.8"></span>  <a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since</a> = <a href="#abnf.dependencies" class="smpl">HTTP-date</a>
    10451038</pre><p id="rfc.section.6.5.p.3">An example of the field is:</p>
    10461039      <div id="rfc.figure.u.16"></div><pre class="text">  If-Unmodified-Since: Sat, 29 Oct 1994 19:43:31 GMT
    … …  
    10591052         modified.
    10601053      </p>
    1061       <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.14"></span><span id="rfc.iref.g.15"></span>  <a href="#header.last-modified" class="smpl">Last-Modified</a>   = "Last-Modified" ":" <a href="#core.rules" class="smpl">OWS</a> <a href="#header.last-modified" class="smpl">Last-Modified-v</a>
    1062   <a href="#header.last-modified" class="smpl">Last-Modified-v</a> = <a href="#abnf.dependencies" class="smpl">HTTP-date</a>
     1054      <div id="rfc.figure.u.17"></div><pre class="inline"><span id="rfc.iref.g.9"></span>  <a href="#header.last-modified" class="smpl">Last-Modified</a> = <a href="#abnf.dependencies" class="smpl">HTTP-date</a>
    10631055</pre><p id="rfc.section.6.6.p.3">An example of its use is</p>
    10641056      <div id="rfc.figure.u.18"></div><pre class="text">  Last-Modified: Tue, 15 Nov 1994 12:45:26 GMT
    … …  
    12461238      <p id="rfc.section.A.p.1">Allow weak entity-tags in all requests except range requests (Sections <a href="#weak.and.strong.validators" title="Weak and Strong Validators">4</a> and <a href="#header.if-none-match" id="rfc.xref.header.if-none-match.3" title="If-None-Match">6.4</a>).
    12471239      </p>
     1240      <p id="rfc.section.A.p.2">Change ABNF productions for header fields to only define the field value. (<a href="#header.fields" title="Header Field Definitions">Section&nbsp;6</a>)
     1241      </p>
    12481242      <h1 id="rfc.section.B"><a href="#rfc.section.B">B.</a>&nbsp;<a id="collected.abnf" href="#collected.abnf">Collected ABNF</a></h1>
    1249       <div id="rfc.figure.u.19"></div> <pre class="inline"><a href="#header.etag" class="smpl">ETag</a> = "ETag:" OWS ETag-v
    1250 <a href="#header.etag" class="smpl">ETag-v</a> = entity-tag
     1243      <div id="rfc.figure.u.19"></div> <pre class="inline"><a href="#header.etag" class="smpl">ETag</a> = entity-tag
    12511244
    12521245<a href="#abnf.dependencies" class="smpl">HTTP-date</a> = &lt;HTTP-date, defined in [Part1], Section 6.1&gt;
    12531246
    1254 <a href="#header.if-match" class="smpl">If-Match</a> = "If-Match:" OWS If-Match-v
    1255 <a href="#header.if-match" class="smpl">If-Match-v</a> = "*" / ( *( "," OWS ) entity-tag *( OWS "," [ OWS
     1247<a href="#header.if-match" class="smpl">If-Match</a> = "*" / ( *( "," OWS ) entity-tag *( OWS "," [ OWS
    12561248 entity-tag ] ) )
    1257 <a href="#header.if-modified-since" class="smpl">If-Modified-Since</a> = "If-Modified-Since:" OWS If-Modified-Since-v
    1258 <a href="#header.if-modified-since" class="smpl">If-Modified-Since-v</a> = HTTP-date
    1259 <a href="#header.if-none-match" class="smpl">If-None-Match</a> = "If-None-Match:" OWS If-None-Match-v
    1260 <a href="#header.if-none-match" class="smpl">If-None-Match-v</a> = "*" / ( *( "," OWS ) entity-tag *( OWS "," [ OWS
     1249<a href="#header.if-modified-since" class="smpl">If-Modified-Since</a> = HTTP-date
     1250<a href="#header.if-none-match" class="smpl">If-None-Match</a> = "*" / ( *( "," OWS ) entity-tag *( OWS "," [ OWS
    12611251 entity-tag ] ) )
    1262 <a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since</a> = "If-Unmodified-Since:" OWS
    1263  If-Unmodified-Since-v
    1264 <a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since-v</a> = HTTP-date
    1265 
    1266 <a href="#header.last-modified" class="smpl">Last-Modified</a> = "Last-Modified:" OWS Last-Modified-v
    1267 <a href="#header.last-modified" class="smpl">Last-Modified-v</a> = HTTP-date
     1252<a href="#header.if-unmodified-since" class="smpl">If-Unmodified-Since</a> = HTTP-date
     1253
     1254<a href="#header.last-modified" class="smpl">Last-Modified</a> = HTTP-date
    12681255
    12691256<a href="#core.rules" class="smpl">OWS</a> = &lt;OWS, defined in [Part1], Section 1.2.2&gt;
    … …  
    13811368      <ul>
    13821369         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/89">http://tools.ietf.org/wg/httpbis/trac/ticket/89</a>&gt;: "If-* and entities"
     1370         </li>
     1371         <li> &lt;<a href="http://tools.ietf.org/wg/httpbis/trac/ticket/276">http://tools.ietf.org/wg/httpbis/trac/ticket/276</a>&gt;: "untangle ABNFs for header fields"
    13831372         </li>
    13841373      </ul>
    … …  
    14051394                        <li><tt>entity-tag</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.1"><b>2</b></a></li>
    14061395                        <li><tt>ETag</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.4"><b>6.1</b></a></li>
    1407                         <li><tt>ETag-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.5"><b>6.1</b></a></li>
    1408                         <li><tt>If-Match</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.6"><b>6.2</b></a></li>
    1409                         <li><tt>If-Match-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.7"><b>6.2</b></a></li>
    1410                         <li><tt>If-Modified-Since</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.8"><b>6.3</b></a></li>
    1411                         <li><tt>If-Modified-Since-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.9"><b>6.3</b></a></li>
    1412                         <li><tt>If-None-Match</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.10"><b>6.4</b></a></li>
    1413                         <li><tt>If-None-Match-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.11"><b>6.4</b></a></li>
    1414                         <li><tt>If-Unmodified-Since</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.12"><b>6.5</b></a></li>
    1415                         <li><tt>If-Unmodified-Since-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.13"><b>6.5</b></a></li>
    1416                         <li><tt>Last-Modified</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.14"><b>6.6</b></a></li>
    1417                         <li><tt>Last-Modified-v</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.15"><b>6.6</b></a></li>
     1396                        <li><tt>If-Match</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.5"><b>6.2</b></a></li>
     1397                        <li><tt>If-Modified-Since</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.6"><b>6.3</b></a></li>
     1398                        <li><tt>If-None-Match</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.7"><b>6.4</b></a></li>
     1399                        <li><tt>If-Unmodified-Since</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.8"><b>6.5</b></a></li>
     1400                        <li><tt>Last-Modified</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.9"><b>6.6</b></a></li>
    14181401                        <li><tt>opaque-tag</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.3"><b>2</b></a></li>
    14191402                        <li><tt>weak</tt>&nbsp;&nbsp;<a href="#rfc.iref.g.2"><b>2</b></a></li>
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