Mar 9, 2010, 4:20:08 AM (10 years ago)

aesthetic changes, preparing for work on #29.

1 edited


  • draft-ietf-httpbis/latest/p6-cache.html

    r776 r778  
    402402      <meta name="dct.creator" content="Reschke, J. F.">
    403403      <meta name="dct.identifier" content="urn:ietf:id:draft-ietf-httpbis-p6-cache-latest">
    404       <meta name="dct.issued" scheme="ISO8601" content="2010-03-08">
     404      <meta name="dct.issued" scheme="ISO8601" content="2010-03-09">
    405405      <meta name="dct.replaces" content="urn:ietf:rfc:2616">
    406406      <meta name="dct.abstract" content="The Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed, collaborative, hypermedia information systems. This document is Part 6 of the seven-part specification that defines the protocol referred to as &#34;HTTP/1.1&#34; and, taken together, obsoletes RFC 2616. Part 6 defines requirements on HTTP caches and the associated header fields that control cache behavior or indicate cacheable response messages.">
    428428            </tr>
    429429            <tr>
    430                <td class="left">Expires: September 9, 2010</td>
     430               <td class="left">Expires: September 10, 2010</td>
    431431               <td class="right">J. Mogul</td>
    432432            </tr>
    489489            <tr>
    490490               <td class="left"></td>
    491                <td class="right">March 8, 2010</td>
     491               <td class="right">March 9, 2010</td>
    492492            </tr>
    493493         </tbody>
    519519      <p>The list of Internet-Draft Shadow Directories can be accessed at <a href="http://www.ietf.org/shadow.html">http://www.ietf.org/shadow.html</a>.
    520520      </p>
    521       <p>This Internet-Draft will expire in September 9, 2010.</p>
     521      <p>This Internet-Draft will expire in September 10, 2010.</p>
    522522      <h1><a id="rfc.copyrightnotice" href="#rfc.copyrightnotice">Copyright Notice</a></h1>
    523523      <p>Copyright © 2010 IETF Trust and the persons identified as the document authors. All rights reserved.</p>
    867867      </ol>
    868868      <div id="rfc.figure.u.4"></div>
    869       <p>These are combined as</p>  <pre class="text">    corrected_received_age = max(now - date_value, age_value)
     869      <p>These are combined as</p>  <pre class="text">  corrected_received_age = max(now - date_value, age_value)
    870870</pre><p id="rfc.section.2.3.2.p.7">When an Age value is received, it <em class="bcp14">MUST</em> be interpreted relative to the time the request was initiated, not the time that the response was received.
    871871      </p>
    872       <div id="rfc.figure.u.5"></div><pre class="text">   corrected_initial_age = corrected_received_age
    873                          + (now - request_time)
     872      <div id="rfc.figure.u.5"></div><pre class="text">  corrected_initial_age = corrected_received_age
     873                          + (now - request_time)
    874874</pre><p id="rfc.section.2.3.2.p.9">where "request_time" is the time (according to the local clock) when the request that elicited this response was sent.</p>
    875875      <p id="rfc.section.2.3.2.p.10">The current_age of a stored response can then be calculated by adding the amount of time (in seconds) since the stored response
    877877      </p>
    878878      <p id="rfc.section.2.3.2.p.11">In summary:</p>
    879       <div id="rfc.figure.u.6"></div><pre class="text">  age_value     - Age header field-value received with the response
    880   date_value    - Date header field-value received with the response
    881   request_time  - local time when the cache made the request
    882                  resulting in the stored response
    883   response_time - local time when the cache received the response
    884   now           - current local time
    886   apparent_age = max(0, response_time - date_value);
     879      <p id="rfc.section.2.3.2.p.12">age_value </p>
     880      <ul class="empty">
     881         <li>Age header field-value received with the response.</li>
     882      </ul>
     883      <p id="rfc.section.2.3.2.p.13">date_value </p>
     884      <ul class="empty">
     885         <li>Date header field-value received with the response.</li>
     886      </ul>
     887      <p id="rfc.section.2.3.2.p.14">request_time </p>
     888      <ul class="empty">
     889         <li>Local time when the cache made the request resulting in the stored response.</li>
     890      </ul>
     891      <p id="rfc.section.2.3.2.p.15">response_time </p>
     892      <ul class="empty">
     893         <li>Local time when the cache received the response.</li>
     894      </ul>
     895      <p id="rfc.section.2.3.2.p.16">now </p>
     896      <ul class="empty">
     897         <li>Current local time.</li>
     898      </ul>
     899      <div id="rfc.figure.u.6"></div>
     900      <p>With these definitions, the current_age can be calculated as per:</p>  <pre class="text">  apparent_age = max(0, response_time - date_value);
    887901  corrected_received_age = max(apparent_age, age_value);
    888902  response_delay = response_time - request_time;
    17611775      </ul>
    17621776      <h2 id="rfc.section.C.11"><a href="#rfc.section.C.11">C.11</a>&nbsp;<a id="changes.since.09" href="#changes.since.09">Since draft-ietf-httpbis-p6-cache-09</a></h2>
    1763       <p id="rfc.section.C.11.p.1">None yet.</p>
     1777      <p id="rfc.section.C.11.p.1">No significant changes.</p>
    17641778      <h1 id="rfc.index"><a href="#rfc.index">Index</a></h1>
    17651779      <p class="noprint"><a href="#rfc.index.A">A</a> <a href="#rfc.index.C">C</a> <a href="#rfc.index.E">E</a> <a href="#rfc.index.F">F</a> <a href="#rfc.index.G">G</a> <a href="#rfc.index.H">H</a> <a href="#rfc.index.M">M</a> <a href="#rfc.index.N">N</a> <a href="#rfc.index.O">O</a> <a href="#rfc.index.P">P</a> <a href="#rfc.index.R">R</a> <a href="#rfc.index.S">S</a> <a href="#rfc.index.V">V</a> <a href="#rfc.index.W">W</a>
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