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时间 网络
# -*- coding: utf-8 -*-
import socket,sys,time
#时间服务器
host = "stdtime.gov.hk"
#端口
port = 37
#时区
curtz = 8
#连接服务器,并接收返回
try:
host = socket.gethostbyname(host)
s = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
s.settimeout(2)
s.sendto("",(host,port))
buf = s.recvfrom(10)[0]
except socket.timeout,ex:
print 'socket error! timeout'
sys.exit(1)
except socket.gaierror,ex:
print 'socket error! gaierror'
sys.exit(1)
if len(buf) < 4:
print 'read data error'
sys.exit(1)
#计算返回的自 1900-1-1 00:00:00 的秒数
secs = ord(buf[0])*pow(256,3)+ord(buf[1])*pow(256,2)+ord(buf[2])*pow(256,1)+ord(buf[3])
ts = time.gmtime(secs - 2208988800+curtz*3600)
#time 是从1970-1-1 00:00:00 算起的 1970-1-1 00:00:00 是秒数是 2208988800s
print time.strftime("%Y-%m-%d %H:%I:%S", ts)
print time.strftime("%Y-%m-%d %H:%I:%S")
#附 Time Server:
'''''
clock.psu.edu
ntp0.cornell.edu
salmon.maths.tcd.ie
stdtime.gov.hk
'''
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