A unique, multithreaded Slow DoS exploit against web servers that use vulnerable versions of thread-based web server software (Apache 1.x, Apache 2.x, httpd, etc.); and is effective against even some mitigation mechanisms such as poorly implemented reverse proxy servers.
This script was used for EHDM and INS lab. A variant of Slow Loris attack which makes a request with infinite URL with delays after each character. This script was able to take down Apache2, python3's HTTPServer.