阿藏哥的部落格~不應該阿

筆者發現

ping = os.system("ping " + "192.168.20.1")

如果ping同網域,ping 192.168.20.3

<ps. 192.168.29.3 是沒有人取得, win 7:192.168.20.14>

ping 同網段且沒人取得的IP,過程會ping不到,但回傳會給0 ,會造成誤判斷,但不同網域就不會有這問題

前幾個例子是跨往網域,就不必修改,但同網域問題,還是要解決

所以寫下這個範例,在同網段且沒人取得的IP,回傳值都是正確

就叫這專案就pingdemo ,code如下

重點:

1.會判斷你輸入ipv4格制正不正確

2.在同網段且沒人取得的IP,去ping,回傳值都是正確

3.當有ping loss,它會記錄起來,並產生檔案

4.當有500個錯誤,會停執行

5. Linux 和windows 都可以run 

from  subprocess import  Popen,PIPE
import platform
import time
import re
num = 3
wait = 500

def ipFormatChk(ip_str):
   pattern = r"\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b"
   if re.match(pattern, ip_str):
      print("ip format is correct\n")
      return True
   else:
      print("ip format is error\n")
      return False

check=False
while(check == False):
    host = input("Enter dut IP:")
    check=ipFormatChk(str(host))
    #print(check)
print("\n")
con1=True
FA=0
times=1
while(con1== True):
    fo = open('ping_loss.txt', 'a')
    ping = Popen("ping "+ ("-n  " if  platform.system().lower()=="windows" else "-c  ")+ "{} -w {} {}".format(num, wait, str(host)),
                     stdout=PIPE, stderr=PIPE)  ## if you don't want it to print it out
    exit_code = ping.wait()

    if exit_code != 0:
      print("ping",host)
      fo.write("ping  " + str(host) + "\n")
      print("result: FAIL.")
      fo.write("result: FAIL."+"\n")
      localtime = time.asctime(time.localtime(time.time()))
      fo.write("time : " + str(localtime) + "\n\n")
      FA = FA + 1
      if FA == 500:
          con1 = False

    else:
      print("ping",host)
      print("result:success.")
    fo.close()
    print("\ntimes",times)
    print("FAIL",FA)
    times=times+1
    print("\n")
fo = open('ping_loss.txt', 'a')
fo.write("times : " + str(times-1)+"\n")
fo.write("FAIL : " + str(FA) + "\n\n")