How to use the httptools.parser.errors function in httptools

def data_received(self, data):
        if self.timeout_keep_alive_task is not None:
            self.timeout_keep_alive_task.cancel()
            self.timeout_keep_alive_task = None

        try:
            self.parser.feed_data(data)
        except httptools.parser.errors.HttpParserError as exc:
            msg = "Invalid HTTP request received."
            self.logger.warning(msg)
            self.transport.close()
        except httptools.HttpParserUpgrade as exc:
            self.handle_upgrade()

def data_received(self, data):
        self.cancel_timeout_keep_alive_task()
        try:
            if self.parser is None:
                self.headers = []
                self.parser = httptools.HttpRequestParser(self)
            self.parser.feed_data(data)
        except httptools.parser.errors.HttpParserError as exc:
            msg = "Invalid HTTP request received."
            if self.debug:
                msg += "\n" + traceback.format_exc()
            self.logger.error(msg)
            self.on_response(msg)
        except httptools.HttpParserUpgrade as exc:
            #self.handle_upgrade()
            pass

def data_received(self, data: bytes) -> None:
        try:
            self.parser.feed_data(data)
        except httptools.parser.errors.HttpParserError:
            self.transport.close()