def make_body_seekable(self):
        if self.is_body_seekable:
            self.body_file_raw.seek(0)
        else:
            self.copy_body()
This forces ``environ['wsgi.input']`` to be seekable.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/webob-1.2.3/webob/request.py/BaseRequest.make_body_seekable