sw33tLie/uff ? reverse-engineered prompt

Build me a command line HTTP fuzzing tool that feels like ffuf, but with a few extra powers for testing tricky servers and WAFs.

I want it to keep the same familiar ffuf style so I can use it like a drop in replacement, but also let me send raw requests exactly as I write them, including weird headers, lowercase headers, headers with spaces, and even malformed lines if I need them. It should also support fuzzing an absolute URI, sending requests where the method line is really the full raw request, and letting me keep the original request order without the tool normalizing anything behind my back.

Please make it fast, with a higher default thread count, a modern browser style user agent, and options like sending a body without a Content Length header and keeping connections alive for request file fuzzing. If anything is unclear, look up the current docs online and match the existing ffuf style as closely as possible.