- Detect HTTP 302 responses (Google redirecting to /sorry/index
without the HTTP client following the redirect)
- Detect short HTML responses (<2000 bytes) containing "/sorry/"
links (meta-refresh or JS redirect variants)
Instances with rotating IPs can set the `suspended_times.SearxEngineCaptcha` to
0 in the search settings [1], the next request will typically use a different
outgoing IP when rotating proxies are configured
[1] https://docs.searxng.org/admin/settings/settings_search.html