Python多线程实现网络端口扫描

思路：

1.接收输入，把接收来的网址转化成ip地址【 socket.gethostbyname】

2.建立port空列表

3.设置超时间隔【 socket.setdefaulttimeout  0.5 】

4.scan端口扫描函数

5.建立进程池

6进程池加载scan，传参【.map】

代码：v0.1

import socket

from multiprocessing.dummy import Pool as ThreadPool

from datetime import datetime

input_address = raw_input( 'Please put scan address:' )

ip = socket.gethostbyname(input_address)

port = []

for i in range( 1 , 28017 ):

    port.append(i)

socket.setdefaulttimeout( 0.5 )

def scan (port):

    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

    try :

        fal = s.connect_ex((ip,port))

        res = s.recv( 1024 )

        if fal == 0 :   

            print 'port : ' +str(port) + ' is open' + res

            s.close()

    except Exception, e:

        print str(e.message)

t1 = datetime.now()

pool = ThreadPool(processes = 20 )

result = pool.map(scan,port)

pool.close()

pool.join()

print 'using time : ' , datetime.now() - t1