code: def prepare_request(self, **kwargs):
          
  
          if self.transport is None:
              self.setup_transport(self.transport_param)
          self.reset()
          self.request_counter = next(REQUEST_COUNTER)
          if kwargs:
              self.setup(**kwargs)
          if self.proxylist.size() and self.config['proxy_auto_change']:
              self.change_proxy()
          self.request_method = self.detect_request_method()
          self.transport.process_config(self)
docs: Configure all things to make real network request.
          This method is called before doing real request via
          transport extension.