Python實現的線上保持

Python實現的線上保持
偶所在的校園網，如果一段時間沒有下載流量則自動斷網，所以編寫此程式定期訪問網路，下載一些無關緊要的資料，來保持網路連結。

 

 

 

# -*- coding: gbk -*-

from socket import *
import time

GET_DATA="""/
GET / HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */*
Accept-Language: zh-cn
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Maxthon)
Host: %s
Connection: Keep-Alive

"""

siteList=[
 ('202.108.22.5',80),
 ('61.135.133.103',80),
 ('71.5.7.138',80),
 ('216.109.112.135',80),
 ('202.108.9.16',80)
 ]

def loop():
 global siteList
 for addr,port in siteList:
  data=''
  try:
   s=socket(AF_INET,SOCK_STREAM)
   s.settimeout(30) #逾時30秒
   s.connect((addr,port))
   s.send(GET_DATA%addr)
   data=s.recv(64)
   if data=='':
    print 'IP: %s'%addr+" can't connect!"
   else:
    print 'IP: %s'%addr+" OK !!!!!!!!!!!!!!!!"
  except timeout,detail:
   #逾時錯誤
   print "逾時錯誤 %s"%addr
   pass
  except error,detail:
   #其他Socket錯誤
   print "其他Socket錯誤 %s"%addr
   pass
  #except:
   #所有錯誤
  # pass
  s.close()
  print '='*60
  time.sleep(30)
 return

def main():
 while True:
  loop()
 return

if __name__=='__main__':
 main()