code: def _new_conn(self):
          
          self.num_connections += 1
          log.debug("Starting new HTTP connection (%d): %s",
                    self.num_connections, self.host)
  
          conn = self.ConnectionCls(host=self.host, port=self.port,
                                    timeout=self.timeout.connect_timeout,
                                    strict=self.strict, **self.conn_kw)
          return conn
docs: Return a fresh :class:`HTTPConnection`.