[Webkit-unassigned] [Bug 136855] New: [Curl] Sometimes incomplete or empty content can be loaded from cache.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136855

           Summary: [Curl] Sometimes incomplete or empty content can be
                    loaded from cache.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: peavo at outlook.com


Sometimes, when two requests with the same url are started at the same time, there is a possibility of loading incomplete or empty content from the cache. The first request will create the new cache entry, and start loading the content into the cache. The second request will assume the content is cached, and start loading from the cache. But if the first request is not finished yet, empty or imcomplete content will be loaded.
This happens because the method CurlCacheEntry::isLoading() is returning the wrong status in the time period between the headers are received, and the content data is received.

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