How to set the system time of the timeout mechanism in a python script

This article mainly introduces how to set the system time of the timeout mechanism for python scripts. If you are interested, refer to this article to introduce how to set the system time for python scripts, there are two types, One is to call the socket to directly send the udp packet to the National Time Service Center, and the other is to call the ntplib Packet. When I ping the cn.pool.ntp.org address of the National Time Service Center on a local computer, packet loss occurs sometimes. However, neither of them checks whether udp packet loss is enabled. method 1 is stuck after udp packet loss and cannot exit, method 2: Although timeout is prompted, no other attempts are made, such as resending a packet or sending a packet to different IP addresses of the same domain name. Therefore, I tried to add a timeout mechanism based on the Code of method 1 and try to send packets to different IP addresses of the same domain name.

The complete code after modification is as follows:

#-*- coding:utf-8 -*-import socketimport structimport timeimport win32apiimport osimport redef getTime(TimeServerAddresses):  TIME_1970 = 2208988800L  client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  client.settimeout(3)  data = '\x1b' + 47 * '\0'  #TimeServer_ip=socket.gethostbyname('cn.pool.ntp.org')  #TimeServer_ip='202.118.1.130'  Port=123  for address in TimeServerAddresses:    success=False    count=0    while not success and count<3:      print address,count      try:        client.sendto(data, (address, Port))        data, address = client.recvfrom(1024)        success=True      except socket.timeout:        print 'Request timed out!'        count=count+1    if success==True:a      break  data_result = struct.unpack('!12I', data)[10]  data_result -= TIME_1970  return data_resultdef setSystemTime(now_time):  tm_year, tm_mon, tm_mday, tm_hour, tm_min, tm_sec, tm_wday, tm_yday, tm_isdst = time.gmtime(now_time)  win32api.SetSystemTime(tm_year, tm_mon, tm_wday, tm_mday, tm_hour, tm_min, tm_sec, 0)  print "Set System OK!"def getServerIP():  res1=os.popen('nslookup cn.pool.ntp.org')  result1=res1.read()  addresses=result1.split('\n\n')[1].split('\n')[1][12:].split(',')  return addresses  #for address in addresses:  #  res=os.popen('ping -n 2 '+address)  #  result=res.read()  #  received_num=int(re.findall('Received = [0-9]',result)[0].split('=')[1])  #  if received_num > 1:  #    break  #TimeServer=addressif __name__ == '__main__':  addresses=getServerIP()  now_time=getTime(addresses)  setSystemTime(now_time)  print "%d-%d-%d %d:%d:%d" % time.localtime(now_time)[:6]

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