The proxy does not manipulate environ RAW_URI/REQUEST_URI the same way as other environ

[BrianSipos]

As of 0.4.6, if the request environ contains a RAW_URI or REQUEST_URI value it is used directly, ignoring the "strip_script_name" constructor parameter.

This makes the proxy have different behavior for WSGI servers which set RAW_URI or REQUEST_URI from those which do not. It seems like a simple fix would be to detect-and-remove the environ['SCRIPT_NAME'] which is a PEP-333 required variable. The other '_URI' environ names are not PEP-333 standard.

As a workaround, a WSGI middleware can strip REQUEST_URI values.