projectdiscovery/httpx ? reverse-engineered prompt

I need a fast command-line toolkit for security and bug bounty hunting, built in Go. It should be a multi-purpose HTTP prober that can take a list of domains or URLs from a file and check them all very quickly.

For each target, it should be able to grab useful info like the HTTP status code, the page title, content length, web server, and tell me if a CDN is being used. It needs to be smart, like automatically falling back from HTTPS to HTTP if a connection fails. I also want the ability to filter the results—for example, only show me pages that return a 200 status code or match a specific string in the body.

The output should be clean and easy to read in the console, but I also need an option to save all the data to a JSON or CSV file. It should be built to handle a large number of targets without failing.