Example of using the Python socket lib to sniff packets.

socket_sniff.py

import socket
from struct import *
 
s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)
#'!BBBHHHHHHBBBBH5s5s'
while True:
     packet= s.recvfrom(65565)
     print packet
     packet =packet[0]
     print "\n",packet
     header=packet[0:26]
     print "\n",header
     iph = unpack('!BHBBHHBBBBBHH4s4s' , header)
     print "\nall header: ",iph
     version_ihl=iph[0]
     print "\nVersion_ihl: ",version_ihl
     version =version_ihl >>4
     print "\nVersion :" ,version
     ttl=iph[5]
     print"\nTTL: ",ttl
    
     break