RightmostTrustedRangeStrategy is leftmost

[remram44]

RightmostTrustedRangeStrategy goes from right to left, until it finds an untrusted IP. That is the rightmost untrusted IP. It then returns that IP, e.g. that was provided by the proxy right of that, the leftmost trusted proxy.

In other words, it gives the rightmost untrusted IP, or the one from the leftmost trusted IP.

The name is wrong.

Example:

X-Forwarded-For: untrusted1 untrusted2 trusted3 trusted4

Would return untrusted2, the rightmost untrusted IP, provided by trusted3, the leftmost trusted proxy.