#!/usr/bin/env python3
import socket
import ssl

def get_server_certificate(hostname, port=443):
    # context = ssl.create_default_context()
    context = ssl._create_unverified_context()

    with socket.create_connection((hostname, port)) as sock:
        with context.wrap_socket(sock, server_hostname=hostname) as ssock:
            cert = ssock.getpeercert()
            return cert

# not success, but why?
if __name__ == "__main__":
    certificate = get_server_certificate("hatter.ink")
    print(f"Certificate: {certificate}")
    for key, value in certificate.items():
        print(f"{key}: {value}")