slowloris is an old attack on HTTP. The idea is to send garbage HTTP headers as slow as possible while keeping the TCP connection open, you send one letter every 5 seconds for example. The HTTP stack on the other side stays busy waiting for HTTP headers and can't do anything else meanwhile.
It's usually targeted to webservers, before most HTTP servers got fixed you could DDOS a server with a tiny connection, but some HTTP clients can also be vulnerable.
But you may find better usage of your time than implementing this.
