Merge branch 'dev/fix-proxy' into 'master'

import ipaddress

from itertools import cycle

from typing import Dict

from os import environ

import httpx

from searx import logger, searx_debug

        raise RuntimeError("Invalid network configuration")

# pylint: disable=too-many-branches

def initialize(settings_engines=None, settings_outgoing=None):

    # pylint: disable=import-outside-toplevel)

    from searx.engines import engines

    settings_engines = settings_engines or settings["engines"]

    settings_outgoing = settings_outgoing or settings["outgoing"]

    settings_outgoing["proxies"] = {}

    if 'SEARX_PROXY_HTTP' in environ:

        settings_outgoing["proxies"]["http"] = environ['SEARX_PROXY_HTTP']

    if 'SEARX_PROXY_HTTPS' in environ:

        settings_outgoing["proxies"]["https"] = environ['SEARX_PROXY_HTTPS']

    # default parameters for AsyncHTTPTransport

    # see https://github.com/encode/httpx/blob/e05a5372eb6172287458b37447c30f650047e1b8/httpx/_transports/default.py#L108-L121  # pylint: disable=line-too-long