Re: [whatwg/fetch] Redirected range requests and preflights. (#145)

IIRC, the subsequent redirects are sometimes used to reauthenticate the resource. I.e., you watch a video for some time and then walk away for a couple hours, upon clicking play again the provider may need to reauthenticate your session (for content license requirements) which may redirect through some validation before going back to the final redirected URL.

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