复制代码 代码如下:
#!/usr/bin/python
# -*- coding: utf-8 -*-
from scapy.all import *
from time import ctime,sleep
import threading
TIMEOUT = 4
conf.verb=0
def pro(cc,handle):
dst = \”192.168.1.\” + str(cc)
packet = IP(dst=dst, ttl=20)/ICMP()
reply = sr1(packet, timeout=TIMEOUT)
if not (reply is None):
handle.write(reply.src+\” is online\”+\”\\n\”)
#print reply.src, \”is online\”
def main():
threads=[]
f=open(\’ip.log\’,\’a\’)
for i in range(2,254):
t=threading.Thread(target=pro,args=(i,f))
threads.append(t)
print \”main Thread begins at \”,ctime()
for t in threads :
t.start()
for t in threads :
t.join()
print \”main Thread ends at \”,ctime()
if __name__==\”__main__\” :
main();