Change IP address to send requests at application level

IPbinding.py

# -*- coding: utf-8 -*-
"""
Created on Sat Jun 07 11:11:16 2014

@author: Dipanjan
"""


#import sys
#from lxml import html
#import urllib2
#import json
#
#target_url = 'http://www.google.com'
#
#def get_product_urls(target_url):
#    
#    request = urllib2.Request(target_url)
#    request.add_header("User-Agent", "Google Chrome")
#    raw_html = urllib2.build_opener().open(target_url).read()
#    print raw_html
#    
#    
#get_product_urls(target_url)


import httplib
import socket
import urllib2

class BindableHTTPConnection(httplib.HTTPConnection):

    def connect(self):
        """Connect to the host and port specified in __init__."""
        self.sock = socket.socket()
        self.sock.bind((self.source_ip, 0))
        if isinstance(self.timeout, float):
            self.sock.settimeout(self.timeout)
            self.sock.connect((self.host,self.port))
    
def BindableHTTPConnectionFactory(source_ip):
    def _get(host, port=None, strict=None, timeout=0):
        bhc=BindableHTTPConnection(host, port=port, strict=strict, timeout=timeout)
        bhc.source_ip=source_ip
        return bhc
    return _get

# replace 0.0.0.0 with allowed IP address when sending request.
class BindableHTTPHandler(urllib2.HTTPHandler):
    def http_open(self, req):
        return self.do_open(BindableHTTPConnectionFactory('0.0.0.0'), req)


opener = urllib2.build_opener(BindableHTTPHandler)
opener.open("http://icanhazip.com/").read()