keep %2F pass in

[GitHub4LP]

Bug description

pathname %2F => / , not do this

How to reproduce

pathname contains %2F

Expected behaviour

keep %2F

Actual behaviour

pathname %2F => / , not do this

[GitHub4LP]

@manics
proxied_path has been %2F => /

we need self.request.uri or self.request.path to get (no %2F => /) path

%2F not / is need for backend