Certificate

openssl req -new -x509 -keyout server.pem -out server.pem -days 365 -nodes

Server

from http import server
import ssl

class CustomRequestHandler(server.SimpleHTTPRequestHandler):
    def do_OPTIONS(self):
        self.send_response(200)
        self.send_header("Access-Control-Allow-Origin", "*")
        self.send_header("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
        self.send_header("Access-Control-Allow-Headers", "Content-Type")
        self.end_headers()

    def do_GET(self):
        super().do_GET()

    def do_POST(self):
        length = int(self.headers.get('Content-Length', 0))
        body = self.rfile.read(length)

        if body:
            self.log_message("[i] POST body: %s", body.decode("utf-8", errors="replace"))

        self.send_response(200)
        self.end_headers()

print("Serving HTTPS on 0.0.0.0 port 4443 (https://0.0.0.0:4443/) ...")
httpd = server.HTTPServer(('0.0.0.0', 4443), CustomRequestHandler)
context = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
context.load_cert_chain(certfile='./server.pem')
httpd.socket = context.wrap_socket(httpd.socket, server_side=True)
httpd.serve_forever()

Start

python3 server.py