#!/usr/bin/env python
import http.server
import urllib.request

class MyHTTPRequestHandler(http.server.SimpleHTTPRequestHandler):
  def end_headers(self):
    self.send_my_headers()

    http.server.SimpleHTTPRequestHandler.end_headers(self)

  def send_my_headers(self):
    self.send_header("Access-Control-Allow-Origin", "*")

  def do_GET(self):
    if self.path[0:14] == "/cgi-bin/proxy":
      self.copyfile(urllib.request.urlopen(self.path[15:]), self.wfile)
    else:
      super().do_GET()

if __name__ == '__main__':
  http.server.test(HandlerClass=MyHTTPRequestHandler)