find IP address and port in a text file using python

Question

I have a text file which have text similar to mentioned below

harry's source ip and port combination is 192.168.4.1/5897 and he is trying to access destination 202.158.14.1/7852

The text may vary. My task is to find the first pair of IP and port.

However my code is not working

import re

with open('traffic.txt', 'r') as file:
    fi = file.readlines()
re_ip = re.compile("^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$")
re_port = re.compile("^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$\/(\d+)")

for line in fi:
    ip = re.findall(re_ip,line)
    port = re.findall(re_port,line)
    print port , ip

"my code is not working" - include the complete error message. — DYZ
– DYZ, Commented Sep 8, 2017 at 5:12
Possible duplicate of Simple Java regex to extract IP address and port from enclosing string. The answer is for Java, but the regex is the same in both languages. — DYZ
– DYZ, Commented Sep 8, 2017 at 5:14

Zoro99 · Accepted Answer · 2017-09-08 05:42:56Z

2

Correct code

import re

with open('traffic.txt', 'r') as file:
    fi = file.readlines()


re_ip = re.compile("\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}")
re_port = re.compile("\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\/(\d+)")

for line in fi:
    port = re.findall(re_port,line)
    ip = re.findall(re_ip,line)
    print "PORT is  " , port , "ip is " ,ip

answered Sep 8, 2017 at 5:42

Zoro99

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1 Comment

ajaykools Over a year ago

I feel '/' needs to be replaced with ':' in re_port. re_port = re.compile("\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:(\d+)")

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