How to check the list of proxies to a specific domain?

Question

proxy

There is a list of proxies and a specific domain that redirects to CloudFlare and captcha if it considers the IP to be suspicious. Please tell me how it is possible to technically implement the check of the possibility of opening the source domain and if there is no redirect, then add the checked proxy to the list of valid ones? Maybe there is already a similar software or site? Thanks in advance for the replies.

Answer 1

Watching how he makes a redirect. Load either with a client like curl or something like selenium and see if there is a captcha in this data. Just keep in mind that the captcha does not always appear and it may be that you checked the IP, then you make a request, and there the captcha.
If you need a solution that can be run on the server and constantly get working proxies, I have a project https://github.com/DevAlone/proxy_py It collects proxies from open sources and checks, if you change PROXY_CHECKERS in the settings, it will be able to check for of your site, now checks against ipinfo.io https://github.com/DevAlone/proxy_py/blob/master/c...