> What is the use case? If you have to read data from one specific website which uses handshake info to avoid being read by software? Evade captchas. curl user

> What is the use case? If you have to read data from one specific website which uses handshake info to avoid being read by software? Evade captchas. curl user agent / heuristics are blocked by many sites these days - I'd guess many popular CDNs have pre-defined "block bots" stuff that blocks everything automated that is not a well-known search engine indexer.