1#

2# Copyright (C) 2019-2025 Mathieu Parent <math.parent@gmail.com>

3#

4# This program is free software: you can redistribute it and/or modify

5# it under the terms of the GNU Lesser General Public License as published by

6# the Free Software Foundation, either version 3 of the License, or

7# (at your option) any later version.

8#

9# This program is distributed in the hope that it will be useful,

10# but WITHOUT ANY WARRANTY; without even the implied warranty of

11# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

12# GNU Lesser General Public License for more details.

13#

14# You should have received a copy of the GNU Lesser General Public License

15# along with this program. If not, see <http://www.gnu.org/licenses/>.

16

17 from requests import Session as RequestSession

18 from requests.adapters import HTTPAdapter

19 from urllib3.util.retry import Retry

20

21

22 class Session(RequestSession):

23 """Session with retry backoff."""

24

25 def __init__(self) -> None:

26 """Instantiate a session."""

27 super().__init__()

28 # retry after 0.0s, 0.2s, 0.4s, 0.8s, 1.6s

29 # retry at 0.0s, 0.2s, 0.6s, 1.4s, 3.0s

30 self.mount("http://", HTTPAdapter(max_retries=Retry(total=5, backoff_factor=0.1)))

31 self.mount("https://", HTTPAdapter(max_retries=Retry(total=5, backoff_factor=0.1)))