Method sleep

src/urllib3/util/retry.py:373–387

Sleep between retry attempts. This method will respect a server's ``Retry-After`` response header and sleep the duration of the time requested. If that is not present, it will use an exponential backoff. By default, the backoff factor is 0 and this method will return

(self, response: BaseHTTPResponse | None = None)

        time.sleep(backoff)

    def sleep(self, response: BaseHTTPResponse | None = None) -> None:
        """Sleep between retry attempts.

        This method will respect a server's ``Retry-After`` response header
        and sleep the duration of the time requested. If that is not present, it
        will use an exponential backoff. By default, the backoff factor is 0 and
        this method will return immediately.
        """

        if self.respect_retry_after_header and response:
            slept = self.sleep_for_retry(response)
            if slept:
                return

        self._sleep_backoff()

    def _is_connection_error(self, err: Exception) -> bool:
        """Errors when we're fairly sure that the server did not receive the