[Webkit-unassigned] [Bug 184293] New: REGRESSION(r229831): Test WebKit2.ProvisionalURLAfterWillSendRequestCallback times out since r229831

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https://bugs.webkit.org/show_bug.cgi?id=184293

            Bug ID: 184293
           Summary: REGRESSION(r229831): Test
                    WebKit2.ProvisionalURLAfterWillSendRequestCallback
                    times out since r229831
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Keywords: Regression
          Severity: Normal
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: cgarcia at igalia.com

The problem is that after willSendRequest callback changes the request, the load is cancelled while transitioning to committed state. This happens because the load is not waiting for the response policy check, so it continues and when transitioning to committed, FrameLoader::closeURL() invalidates the current policy check that causes a load failure. The new request returned by the API doesn't have any requester, so it's no longer considered a main resource load. In the network process the resource load task doesn't wait for the response policy and continues the load, sending the data to the web process. Once the first data is received the load transitions to commit, but the response policy check is still ongoing. This can only happen when using the C API (I don't know about the Cocoa API), but not with the GLib API because it doesn't allow to create a new request, only to modify the passed in one. With the C API we loss other internal things of the request like the priority, but I guess the most important one is the requester.

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