Changeset 792 for draft-ietf-httpbis/latest/p6-cache.xml

Timestamp:

Mar 17, 2010, 3:11:28 AM (10 years ago)

Author:

julian.reschke@…

Message:

make age calculation a bit less conservative (related to #29)

File:

• draft-ietf-httpbis/latest/p6-cache.xml (modified) (2 diffs)

draft-ietf-httpbis/latest/p6-cache.xml

@@ -687 +687 @@
     <t>the "apparent_age": response_time minus date_value, if the local clock is reasonably well synchronized to the
       origin server's clock. If the result is negative, the result is replaced by zero.</t>
-    <t>age_value, if all of the caches along the response path implement HTTP/1.1.</t>
-  </list>
-</t>
+    <t>the "corrected_age_value", if all of the caches along the response path implement HTTP/1.1;
+      note this value &MUST; be interpreted relative to the time the
+      request was initiated, not the time that the response was received.</t>
+  </list>
+</t>
+<figure>
+<artwork type="code">
+  apparent_age = max(0, response_time - date_value);
+
+  response_delay = response_time - request_time;
+  corrected_age_value = age_value + response_delay;  
+</artwork>
+</figure>
 <figure>
 <preamble>These are combined as</preamble>
 <artwork type="code">
-  apparent_age = max(0, response_time - date_value);
-  corrected_received_age = max(apparent_age, age_value);
-</artwork></figure>
-<t>
-  When an Age value is received, it &MUST; be interpreted relative to the time the
-  request was initiated, not the time that the response was received.
-</t>
-<figure><artwork type="code">
-  response_delay = response_time - request_time;
-  corrected_initial_age = corrected_received_age + response_delay;
+  corrected_initial_age = max(apparent_age, corrected_age_value);
 </artwork></figure>
 <t>
@@ -2330 +2331 @@
 <section title="Since draft-ietf-httpbis-p6-cache-09" anchor="changes.since.09">
 <t>
-  No significant changes.
+  Closed issues:
+  <list style="symbols"> 
+    <t>
+      <eref target="http://tools.ietf.org/wg/httpbis/trac/ticket/29" />:
+      "Age calculation"
+    </t>
+  </list>
 </t>
 </section>