Comment 1 for bug 1503332

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Olivier Tilloy (osomon) wrote : Re: Blank page when access to local URL (file://…) is denied

I had a quick look at how we can detect that access was denied, and it seems that the only difference with a normal load sequence (load started, load committed, load succeeded) is that the HTTP status code is always 0 for all events in the sequence.

A "load succeeded" event with an HTTP status code of 0 might be enough to indicate that access was denied, need to double check.