Changeset 2235 for draft-ietf-httpbis/latest/p6-cache.xml

Timestamp:

May 6, 2013, 11:17:49 PM (7 years ago)

Author:

mnot@…

Message:

Move date parsing advice up to freshness; see #469

File:

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

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

@@ -579 +579 @@
 </t>
 <t>
+   When calculating freshness, to avoid common problems in date parsing:
+</t>
+<t>
+  <list style="symbols">
+     <t>Although all date formats are specified to be case-sensitive, 
+        cache recipients &SHOULD; match day, week and timezone names
+        case-insensitively.</t>
+             
+     <t>If a cache recipient's internal implementation of time has less
+        resolution than the value of an HTTP-date, the recipient &MUST;
+        internally represent a parsed <x:ref>Expires</x:ref> date as the
+        nearest time equal to or earlier than the received value.</t>
+
+     <t>Cache recipients &MUST-NOT; allow local time zones to influence the
+        calculation or comparison of an age or expiration time.</t>
+
+     <t>Cache recipients &SHOULD; consider a date with a zone abbreviation
+        other than "GMT" to be invalid for calculating expiration.</t>
+  </list>
+</t>
+<t>
    Note that freshness applies only to cache operation; it cannot be used to
    force a user agent to refresh its display or reload a resource. See <xref
@@ -761 +782 @@
   current_age = corrected_initial_age + resident_time;
 </artwork></figure>
-<t>
-   Additionally, to avoid common problems in date parsing:
-</t>
-<t>
-  <list style="symbols">
-     <t>Although all date formats are specified to be case-sensitive, 
-        cache recipients &SHOULD; match day, week and timezone names
-        case-insensitively.</t>
-             
-     <t>If a cache recipient's internal implementation of time has less
-        resolution than the value of an HTTP-date, the recipient &MUST;
-        internally represent a parsed <x:ref>Expires</x:ref> date as the
-        nearest time equal to or earlier than the received value.</t>
-
-     <t>Cache recipients &MUST-NOT; allow local time zones to influence the
-        calculation or comparison of an age or expiration time.</t>
-
-     <t>Cache recipients &SHOULD; consider a date with a zone abbreviation
-        other than "GMT" to be invalid for calculating expiration.</t>
-  </list>
-</t>
 </section>