mirror of https://github.com/searxng/searxng.git
37 lines
844 B
Python
37 lines
844 B
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
|
|
"""
|
|
Method ``http_connection``
|
|
--------------------------
|
|
|
|
The ``http_connection`` method evaluates a request as the request of a bot if
|
|
the Connection_ header is set to ``close``.
|
|
|
|
.. _Connection:
|
|
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Connection
|
|
|
|
"""
|
|
# pylint: disable=unused-argument
|
|
|
|
from __future__ import annotations
|
|
from ipaddress import (
|
|
IPv4Network,
|
|
IPv6Network,
|
|
)
|
|
|
|
import flask
|
|
import werkzeug
|
|
|
|
from . import config
|
|
from ._helpers import too_many_requests
|
|
|
|
|
|
def filter_request(
|
|
network: IPv4Network | IPv6Network,
|
|
request: flask.Request,
|
|
cfg: config.Config,
|
|
) -> werkzeug.Response | None:
|
|
|
|
if request.headers.get('Connection', '').strip() == 'close':
|
|
return too_many_requests(network, "HTTP header 'Connection=close")
|
|
return None
|