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hixie: Talk more about HTTP caching semantics in the context of appcache. (whatwg r6749)

From: poot <cvsmail@w3.org>
Date: Mon, 24 Oct 2011 23:23:13 -0400
To: public-html-diffs@w3.org
Message-Id: <E1RIXbd-0006qD-7I@jay.w3.org>
hixie: Talk more about HTTP caching semantics in the context of
appcache. (whatwg r6749)

http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.5409&r2=1.5410&f=h
http://html5.org/tools/web-apps-tracker?from=6748&to=6749

===================================================================
RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.5409
retrieving revision 1.5410
diff -u -d -r1.5409 -r1.5410
--- Overview.html	25 Oct 2011 03:13:49 -0000	1.5409
+++ Overview.html	25 Oct 2011 03:22:43 -0000	1.5410
@@ -48559,7 +48559,8 @@
     <p><i>Fetching the manifest</i>: <a href="#fetch">Fetch</a> the resource
     from <var title="">manifest URL</var> with the <i>synchronous
     flag</i> set, and let <var title="">manifest</var> be that
-    resource.</p> 
+    resource. HTTP caching semantics should be honored for this
+    request.</p> 
     <p>If the resource is labeled with the <a href="#mime-type">MIME type</a>
     <code><a href="#text-cache-manifest">text/cache-manifest</a></code>, either with no parameters or
     with a single parameter with the name "<code title="">charset</code>" whose value is an <a href="#ascii-case-insensitive">ASCII
@@ -48888,8 +48889,9 @@
       server-side errors.</p>
 
       <p class="note">Except for the "no-store" directive, HTTP
-      caching rules are ignored for the purposes of the
-      <a href="#application-cache-download-process">application cache download process</a>.</p>
+      caching rules that would cause a file to be expired or otherwise
+      not cached are ignored for the purposes of the <a href="#application-cache-download-process">application
+      cache download process</a>.</p>
 
      </li>
 
@@ -49011,7 +49013,15 @@
 
     <p><a href="#fetch">Fetch</a> the resource from <var title="">manifest
     URL</var> again, with the <i>synchronous flag</i> set, and let
-    <var title="">second manifest</var> be that resource.</p> 
+    <var title="">second manifest</var> be that resource. HTTP caching
+    semantics should again be honored for this request.</p> 
+    <p class="note">Since caching can be honored, authors are
+    encouraged to avoid setting the cache headers on the manifest in
+    such a way that the user agent would simply not contact the
+    network for this second request; otherwise, the user agent would
+    not notice if the cache had changed during the cache update
+    process.</p>
+
    </li>
 
    <li>
Received on Tuesday, 25 October 2011 03:23:14 GMT

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