If this is a "found" list from a public source, be aware that many may be "honeypots" (monitored by owners) or highly unstable.
Cleans the file by removing duplicates and identifying the protocol.
Reads the .txt file, tests each proxy against a URL (like Google or Judge), and saves the "Alive" ones.
Multi-threading is essential for a list of 70k; otherwise, it would take days to finish.
Below are the three most common ways to develop a solution for a large proxy list. 🛠️ Option 1: A Python Proxy Checker
To help you with your file, I need to know exactly how you intend to use it. Proxies are versatile tools, and "developing a piece" for them could mean anything from creating a script to manage them to writing a guide on how to deploy them.