Python实现的在线保持
偶所在的校园网，如果一段时间没有下载流量则自动断网，所以编写此程序定期访问网络，下载一些无关紧要的数据，来保持网络链接。
# -*- 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) #超时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:
#超时错误
print "超时错误 %s"%addr
pass
except error,detail:
#其他Socket错误
print "其他Socket错误 %s"%addr
pass
#except:
#所有错误
# pass
s.close()
print '='*60
time.sleep(30)
return
def main():
while True:
loop()
return
if __name__=='__main__':
main()
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