ScoutFlow

started = time.perf_counter()
redirects: list[str] = []
current = url
try:
    async with _client() as client:
        while True:
            await _space_requests(urlsplit(current).hostname or "")
            response, body = await _raw_get(client, current, accept)
            if response.is_redirect and "location" in response.headers:
                if len(redirects) >= settings.max_redirects:
                    raise CheckFailure("http_error", "Too many redirects.", response.status_code)
                nxt = urljoin(current, response.headers["location"])
                try:
                    await validate_url(nxt)
                except UnsafeURL as exc:
                    raise CheckFailure("invalid_config", f"The page redirected to a blocked address. {exc}") from exc
                redirects.append(nxt)
                current = nxt
                continue
            break
except httpx.TimeoutException as exc:
    raise CheckFailure("timeout", f"No response within {settings.http_timeout_seconds:g} s.") from exc
except httpx.TransportError as exc:
    raise CheckFailure("network", _network_message(exc)) from exc