Function resolve_proxies

src/requests/utils.py:911–939

This method takes proxy information from a request and configuration input to resolve a mapping of target proxies. This will consider settings such as NO_PROXY to strip proxy configurations. :param request: Request or PreparedRequest :param proxies: A dictionary of schemes or scheme

(
    request: Request | PreparedRequest,
    proxies: dict[str, str] | None,
    trust_env: bool = True,
)

def resolve_proxies(
    request: Request | PreparedRequest,
    proxies: dict[str, str] | None,
    trust_env: bool = True,
) -> dict[str, str]:
    """This method takes proxy information from a request and configuration
    input to resolve a mapping of target proxies. This will consider settings
    such as NO_PROXY to strip proxy configurations.

    :param request: Request or PreparedRequest
    :param proxies: A dictionary of schemes or schemes and hosts to proxy URLs
    :param trust_env: Boolean declaring whether to trust environment configs

    :rtype: dict
    """
    proxies = proxies if proxies is not None else {}
    url = cast(str, request.url)
    scheme = urlparse(url).scheme
    no_proxy = proxies.get("no_proxy")
    new_proxies = proxies.copy()

    if trust_env and not should_bypass_proxies(url, no_proxy=no_proxy):
        environ_proxies = get_environ_proxies(url, no_proxy=no_proxy)

        proxy = environ_proxies.get(scheme, environ_proxies.get("all"))

        if proxy:
            new_proxies.setdefault(scheme, proxy)
    return new_proxies


def default_user_agent(name: str = "python-requests") -> str: