basehttp.py 文件源码

def get_environ(self):
        # Strip all headers with underscores in the name before constructing
        # the WSGI environ. This prevents header-spoofing based on ambiguity
        # between underscores and dashes both normalized to underscores in WSGI
        # env vars. Nginx and Apache 2.4+ both do this as well.
        for k, v in self.headers.items():
            if '_' in k:
                del self.headers[k]

        env = super(WSGIRequestHandler, self).get_environ()

        path = self.path
        if '?' in path:
            path = path.partition('?')[0]

        path = uri_to_iri(path).encode(UTF_8)
        # Under Python 3, non-ASCII values in the WSGI environ are arbitrarily
        # decoded with ISO-8859-1. We replicate this behavior here.
        # Refs comment in `get_bytes_from_wsgi()`.
        env['PATH_INFO'] = path.decode(ISO_8859_1) if six.PY3 else path

        return env