https_server_with_headers.py

# python3
# generate server.pem certificate with the following command:
#    openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes

import ssl
from http.server import HTTPServer, BaseHTTPRequestHandler

class MyHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        # send 200 response
        self.send_response(200)
        # add our own custom header
        self.send_header("X-Frame-Options", "SAMEORIGIN")
        self.send_header("X-Content-Type-Options", "nosniff")

        # send response headers
        self.end_headers()
        # send the body of the response
        with open('a.js', 'rb') as file:
            file.read
            self.wfile.write(bytes(file.read()))


server_address = ('0.0.0.0', 443)
httpd = HTTPServer(server_address, MyHandler)
httpd.socket = ssl.wrap_socket(httpd.socket,
                               server_side=True,
                               certfile='server.pem',
                               ssl_version=ssl.PROTOCOL_TLS)
httpd.serve_forever()