[Webkit-unassigned] [Bug 49838] New: Image Subresource Loads Should Not Prevent Page Cache Entry

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=49838

           Summary: Image Subresource Loads Should Not Prevent Page Cache
                    Entry
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Page Loading
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: joepeck at webkit.org


I have been seeing some pages not enter the Page Cache because of a "Main Document Error".
Investigating this, it turns out that some of these "Main Document Errors" are because there
was a subresource load triggered at the same time the navigation was attempted.

Examples of this would be websites using different images for default, :hover, and :active
states for navigational menu. Navigating using this menu could spawn a subresource load,
only to be immediately stopped and prevent the page from entering the cache. I've
seen this happen mostly with image loads, and those types of resources do not seem
particularly important. The request is going to be cancelled anyways.

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