CODEWITHSUNDEEP
pythonsockets
Sundararajan
Sundararajan

Reputation: 704

Loop not working in socket.connect_ex()

Folks, I'm trying a simple port scanner to verify whether the port is open or closed using socket.connect_ex((192.169.10.1, 80))
It works fine but I want pass multiple IP and port so i used list and iterate them using for loop. I get result only for the first IP in the list, the second IP is not giving correct result Instead it always runs the elif block, what might be the problem? can some one guide me where I'm going wrong.

MY CODE:

import socket
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

iplst = ['193.169.10.100', '193.169.10.101']
ports = [80, 80]

for i,j in zip(iplst,ports):

   result = sock.connect_ex((i,j))

   if result == 0:
      print("open" , i)
   elif result != 0:
      print("closed", i)

OUTPUT: 

open 193.169.10.100
closed 193.169.10.101

But I'm sure, both ports are open

Upvotes: 5

Views: 6838

Answers (1)

matino
matino

Reputation: 17725

You need to create a new socket per each (IP, port):

import socket

ips = ['193.169.10.100', '193.169.10.101']
ports = [80, 80]

for ip, port in zip(ips, ports):
   sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
   result = sock.connect_ex((ip, port))
   sock.close()
   assert result == 0

Also it's a good practise to close the socket once you're done.

Upvotes: 8

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