text.py

import socket, sys
from flask import request
from array import *
from struct import *
from flask import Flask
app = Flask(__name__)

@app.route('/')

def hello_world():	

		s = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket.IPPROTO_TCP)

    		packet = s.recvfrom(65536)

    		packet = packet[0]

		ip_header = packet[0:20]
    
		iph = unpack('!2B3H2BH4s4s' , ip_header)	

		t_length = iph[2] 
		protocol = iph[6]
    
		s_addr = socket.inet_ntoa(iph[8]);
		d_addr = socket.inet_ntoa(iph[9]);
    
		protocol_s = protocol    

		if protocol == 1:
		    protocol_s = 'ICMP'
		if protocol == 6:
	   	    protocol_s = 'TCP'
		if protocol == 17:
	            protocol_s = 'UDP'
    
		tcp_header = packet[20:40]
     
		tcph = unpack('!HHLLBBHHH' , tcp_header)

		dest_port = tcph[1]		
 	        
		test = 'Protocol : ' + protocol_s + ' | Source Address : ' + str(s_addr) + ' | Destination Address : ' + str(d_addr) + ' | Dest Port : ' + str(dest_port) + ' | Packet Length : ' + str(t_length)
                
		return test 

if __name__ == '__main__':
   app.run(debug=True)