Method _process_server_headers

tornado/websocket.py:714–717

(
        self, key: Union[str, bytes], headers: httputil.HTTPHeaders
    )

    # boundary is currently pretty ad-hoc.
    @abc.abstractmethod
    def _process_server_headers(
        self, key: Union[str, bytes], headers: httputil.HTTPHeaders
    ) -> None:
        raise NotImplementedError()

    @abc.abstractmethod
    def start_pinging(self) -> None: