monitor port use | Python Fiddle

import pcap, dpkt, socket
import sys, time

#Monitor your Browsing/Downloading data via Python

# pc will capture network traffic  
pc = pcap.pcap()

# the ports we want to listen
# ports = (80, 8080, 443, 888) # for HTTP and HTTPS
 
def process():
  # this function listens to given ports   
  mem = sport = dport = 0
  try:
    # as long as there are new packets  
    for ts, pkt in pc: # timestamp , packet 
      eth = dpkt.ethernet.Ethernet(pkt)
      
      #print eth # print the who packet
      ''' example results look like
      Ethernet(
         src='\x00\x03G\xb2M\xe4', 
         dst='\x00\x03G\x06h\x18', 
         data=IP(
            src='\n\x00\x01\x1c',
            dst='\n\x00\x01\x10', 
            sum=39799, 
            len=60, 
            p=1, 
            ttl=128, 
            id=35102, 
            data=ICMP(
                sum=24667,
                type=8, 
                data=Echo(
                   id=512, 
                   seq=60160, 
                   data='blahblah'))))
      '''
      
      ip = eth.data

# now data is in ip
      if (ip.__class__ == dpkt.ip.IP):
        #source IP address and Destination address
        ip1, ip2 = map(socket.inet_ntoa, [ip.src, ip.dst])
        
        # is the protocol TCP? 
        if ip.p == socket.IPPROTO_TCP: # only listen to TCP traffic
          I7 = ip.data
          
          #source IP port and Destination port
          sport, dport = [I7.sport, I7.dport]     
          
          # if the traffic in the port range we want to listen to
          # if (sport in ports or dport in ports):
          if (1==1):
            if len(I7.data) > 0:
              time_string = time.strftime('%x %X %Z', time.localtime(ts));  
              print '%s, packet from %s:%d to %s:%d, length: %d' %(time_string, ip1, sport, ip2, dport, len(I7.data))
              mem = mem + len(I7.data)
  except KeyboardInterrupt:
    print '%s' % sys.exc_type
    print 'shutting down'
    print ('%d packets received, %d packets dropped'
           ' %d packets dropped by interface') % pc.stats()
    return int(mem)
 
def main():
  print "Start monitoring"
  mem = process()
  print float(mem/(1024*1024)), 'mb traffic monitored'
  return
 
if __name__ == '__main__':
  main()

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