Attempt redirects based on Referer or Referrer header before other methods

[TangentFoxy]

Tl;dr: I have implemented a better redirect system already, but one based on headers that browsers are sending already by default would be a much better solution.

[TangentFoxy]

Referer: something

• Only trust same domain/proto
• Or paths

[TangentFoxy]

strip anything like chars://something.with.dots if at front of Referer header

• I forgot basic auth and ports..