[Webkit-unassigned] [Bug 42051] New: browser cache and webkit cache used for resources listed as fallback and/or network in cache manifest file.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42051

           Summary: browser cache and webkit cache used for resources
                    listed as fallback and/or network in cache manifest
                    file.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://htmltest.freetzi.com/fallback/index.html
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: liachen at rim.com
                CC: yong.li.webkit at gmail.com


When loading resources listed in fallback and/or network sections in a cache manifest file, we use webkit cache and browser cache, which could result in wrong resource used when online status changed during a browser session:

Steps to reproduce:
1. load http://htmltest.freetzi.com/fallback/index.html;
2. the image should display "online";
3. remove all network connection;
4. open a new tab and load http://htmltest.freetzi.com/fallback/index.html;
5. the image should display "offline", but it shows "online".

The reason is when we loading online.gif for the new tab, it doesn't check whether it's a fallback resource before we load it from webkit cache.

Another aspect of this issue is, we can also load fallback/network resources from browser cache, so we also need to make every load of fallback/network resources with cache policy of CachePolicyReload/ReloadIgnoringCacheData.

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