docs: def send(self, data):
          """ Send data over scgi to URL and get response.
          """
          start = time.time()
          try:
              scgi_resp = ''.join(self.transport.send(_encode_payload(data)))
          finally:
              self.latency = time.time() - start
  
          resp, self.resp_headers = _parse_response(scgi_resp)
          return resp