WiFi-Pumpkin TCP-Proxy

#!/usr/bin/env python2.7
from scapy.all import *
from scapy_http import http # for layer HTTP
from default import PSniffer # base plugin class

class ExamplePlugin(PSniffer):
    _activated     = False
    _instance      = None
    meta = {
        'Name'      : 'Example',
        'Version'   : '1.0',
        'Description' : 'Brief description of the new plugin',
        'Author'    : 'your name',
    }
    def __init__(self):
        for key,value in self.meta.items():
            self.__dict__[key] = value

    @staticmethod
    def getInstance():
        if ExamplePlugin._instance is None:
            ExamplePlugin._instance = ExamplePlugin()
        return ExamplePlugin._instance

    def filterPackets(self,pkt): # (pkt) object in order to modify the data on the fly
        if pkt.haslayer(http.HTTPRequest): # filter only http request

            http_layer = pkt.getlayer(http.HTTPRequest) # get http fields as dict type
            ip_layer = pkt.getlayer(IP)# get ip headers fields as dict type

            print http_layer.fields['Method'] # show method http request
            # show all item in Header request http
            for item in http_layer.fields['Headers']:
                print('{} : {}'.format(item,http_layer.fields['Headers'][item]))

            print ip_layer.fields['src'] # show source ip address
            print ip_layer.fields['dst'] # show destiny ip address

            print http_layer # show item type dict
            print ip_layer # show item type dict

            return self.output.emit({'name_module':'send output to tab TCP-Proxy'})