1.python类的类方法不能调用，类中的实例方法，如需调用把调用的方法也改为类方法
#conding=utf-8
import socket,struct,time,select
class CheckLive(object):
ICMP_ECHO = 8
@classmethod
def checksum(cls, source_string):
sum = 0
count_to = int(len(source_string) / 2) * 2
for count in xrange(0, count_to, 2):
this = ord(source_string[count + 1]) * 256 + ord(source_string[count])
sum = sum + this
sum = sum & 0xffffffff
if count_to < len(source_string):
sum = sum + ord(source_string[len(source_string) - 1])
sum = sum & 0xffffffff
sum = (sum >> 16) + (sum & 0xffff)
sum = (sum >> 16) + sum
ans = ~sum
return ans & 0Xffff
@classmethod
def send_one_ping(cls, my_socket, dest_addr, id, psize):
dest_addr = socket.gethostbyname(dest_addr)
psize = psize - 8
my_checksum = 0
header = struct.pack("bbHHh", CheckLive.ICMP_ECHO, 0, my_checksum, id, 1)
bytes = struct.calcsize("d")
data = (psize - bytes) * "Q"
data = struct.pack("d", time.time()) + data
my_checksum = cls.checksum(header + data)
header = struct.pack('bbHHh', CheckLive.ICMP_ECHO, 0, my_checksum, id, 1)
package = header + data
try:
return my_socket.sendto(package, (dest_addr, 1))
except:
return None
@classmethod
def receive_one_ping(cls, my_socket, id, timeout):
time_left = timeout
while True:
start_select = time.time()
events = select.select([my_socket, ], [], [], time_left)
time_received = time.time()
if events[0] == []:
return
received_packet, addr = my_socket.recvfrom(1024)
icmpHeader = received_packet[20:28]
type, code, checksum, package_id, sequence = struct.unpack(
"bbHHh", icmpHeader
)
if package_id == id:
bytes = struct.calcsize("d")
time_sent = struct.unpack("d", received_packet[28:28 + bytes])[0]
return time_received - time_sent
time_left = time_left - (time_received - start_select)
if time_left < 0:
break
@classmethod
def ping_ip(cls, ip):
icmp = socket.getprotobyname('icmp')
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)
cls.send_one_ping(s, ip, 1, 80)
w = cls.receive_one_ping(s, 1, 10)
#print w
return w
if __name__ == '__main__':
if CheckLive.ping_ip('192.168.215.174'):
print 'yes'
else:
print "no"2.ping检测的普通函数
#coding=utf-8
import re
import time
import socket
import struct
import select
ICMP_ECHO = 8
def checksum(source_string):
sum = 0
count_to = int(len(source_string)/2)*2
for count in xrange(0, count_to, 2):
this = ord(source_string[count + 1]) * 256 + ord(source_string[count])
sum = sum + this
sum = sum & 0xffffffff
if count_to < len(source_string):
sum = sum + ord(source_string[len(source_string) - 1])
sum = sum & 0xffffffff
sum = (sum >> 16) + (sum & 0xffff)
sum = (sum >> 16) + sum
ans = ~sum
return ans & 0Xffff
def send_one_ping(my_socket, dest_addr, id, psize):
dest_addr = socket.gethostbyname(dest_addr)
psize = psize - 8
my_checksum = 0
header = struct.pack("bbHHh", ICMP_ECHO, 0, my_checksum, id, 1)
bytes = struct.calcsize("d")
data = (psize - bytes) * "Q"
data = struct.pack("d", time.time()) + data
my_checksum = checksum(header + data)
header = struct.pack('bbHHh', ICMP_ECHO, 0, my_checksum, id, 1)
package = header + data
try:
return my_socket.sendto(package, (dest_addr,1))
except:
return None
def receive_one_ping(my_socket, id, timeout):
time_left = timeout
while True:
start_select = time.time()
events = select.select([my_socket, ],[],[],time_left)
time_received = time.time()
if events[0] == []:
return
received_packet, addr = my_socket.recvfrom(1024)
icmpHeader = received_packet[20:28]
type, code, checksum, package_id, sequence = struct.unpack(
"bbHHh", icmpHeader
)
if package_id == id:
bytes = struct.calcsize("d")
time_sent = struct.unpack("d", received_packet[28:28 + bytes])[0]
return time_received - time_sent
time_left = time_left - (time_received - start_select)
if time_left < 0:
break
def change_name(s):
"""
s is a str
"""
s = re.sub('-','_',s)
return s
def ping_ok(d):
ip = d.get('address','abc')
icmp = socket.getprotobyname('icmp')
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)
if not send_one_ping(s, ip, 1, 1024):
return False
return True if receive_one_ping(s, 1, 5) else False
3.建ping检测的普通函数封装为类，类方法属于实例方法
import socket,struct,time,select
#check kvm alive
class check_alive(object):
ICMP_ECHO = 8
def checksum(self, source_string):
sum = 0
count_to = int(len(source_string) / 2) * 2
for count in xrange(0, count_to, 2):
this = ord(source_string[count + 1]) * 256 + ord(source_string[count])
sum = sum + this
sum = sum & 0xffffffff
if count_to < len(source_string):
sum = sum + ord(source_string[len(source_string) - 1])
sum = sum & 0xffffffff
sum = (sum >> 16) + (sum & 0xffff)
sum = (sum >> 16) + sum
ans = ~sum
return ans & 0Xffff
def send_one_ping(self, my_socket, dest_addr, id, psize):
dest_addr = socket.gethostbyname(dest_addr)
psize = psize - 8
my_checksum = 0
header = struct.pack("bbHHh", check_alive.ICMP_ECHO, 0, my_checksum, id, 1)
bytes = struct.calcsize("d")
data = (psize - bytes) * "Q"
data = struct.pack("d", time.time()) + data
my_checksum = self.checksum(header + data)
header = struct.pack('bbHHh', check_alive.ICMP_ECHO, 0, my_checksum, id, 1)
package = header + data
try:
return my_socket.sendto(package, (dest_addr, 1))
except:
return None
def receive_one_ping(self, my_socket, id, timeout):
time_left = timeout
while True:
start_select = time.time()
events = select.select([my_socket, ], [], [], time_left)
time_received = time.time()
if events[0] == []:
return
received_packet, addr = my_socket.recvfrom(1024)
icmpHeader = received_packet[20:28]
type, code, checksum, package_id, sequence = struct.unpack(
"bbHHh", icmpHeader
)
if package_id == id:
bytes = struct.calcsize("d")
time_sent = struct.unpack("d", received_packet[28:28 + bytes])[0]
return time_received - time_sent
time_left = time_left - (time_received - start_select)
if time_left < 0:
break
def ping_ip(self, ip):
icmp = socket.getprotobyname('icmp')
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, icmp)
self.send_one_ping(s, ip, 1, 80)
w = self.receive_one_ping(s, 1, 10)
#print w
return w