魚拓サービスはIPを書き換えているか？

detect_replace.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from http.server import HTTPServer, SimpleHTTPRequestHandler

class EchoHandler(SimpleHTTPRequestHandler):
    def make_response(self):
        table = str.maketrans("0123456789.:", "〇一二三四五六七八九、：")
        real_address = "{}:{}".format(*self.client_address)
        response = "You are: {}\n\n{}".format(real_address, str(self.headers))
        response += "REAL IP: {}\n".format(real_address.replace(".", "-"))
        response += "REAL IP: {}\n".format(real_address.replace(".", "_"))
        response += "REAL IP: {}\n".format(real_address.replace(".", " "))
        response += "REAL IP: {}\n".format(real_address.replace(".", "　"))
        response += "REAL IP: {}\n".format(real_address.replace(".", "の"))
        response += "REAL IP: {}\n".format(real_address.translate(table))
        print(response)
        return bytes(response, encoding="utf-8")

    def do_GET(self):
        body = self.make_response()
        self.send_response(200)
        self.send_header("Content-type", "text/plain; charset=utf-8")
        self.send_header("Content-length", len(body))
        self.end_headers()
        self.wfile.write(body)


def main(*args, **kwargs):
    host = "0.0.0.0"
    port = 8000
    httpd = HTTPServer((host, port), EchoHandler)
    print("serving at port", port)
    httpd.serve_forever()


if __name__ == "__main__":
    main()