[docs]class XForwardedHostMiddleware( object ):
"""
A WSGI middleware that changes the HTTP host header in the WSGI environ
based on the X-Forwarded-Host header IF found
"""
def __init__( self, app, global_conf=None ):
self.app = app
def __call__( self, environ, start_response ):
x_forwarded_host = environ.get( 'HTTP_X_FORWARDED_HOST', None )
if x_forwarded_host:
environ[ 'ORGINAL_HTTP_HOST' ] = environ[ 'HTTP_HOST' ]
environ[ 'HTTP_HOST' ] = x_forwarded_host.split(', ', 1)[0]
x_forwarded_for = environ.get( 'HTTP_X_FORWARDED_FOR', None )
if x_forwarded_for:
environ[ 'ORGINAL_REMOTE_ADDR' ] = environ[ 'REMOTE_ADDR' ]
environ[ 'REMOTE_ADDR' ] = x_forwarded_for.split(', ', 1)[0]
x_url_scheme = environ.get( 'HTTP_X_URL_SCHEME', None )
if x_url_scheme:
environ[ 'original_wsgi.url_scheme' ] = environ[ 'wsgi.url_scheme' ]
environ[ 'wsgi.url_scheme' ] = x_url_scheme
return self.app( environ, start_response )