如何检测域名证书

import ssl
import socket

def check_ssl_certificate(domain, port=443):
    context = ssl.create_default_context()
    try:
        with socket.create_connection((domain, port)) as sock:
            with context.wrap_socket(sock, server_hostname=domain) as ssock:
                cert = ssock.getpeercert()
                print(f"Certificate for {domain} is valid until {cert['notAfter']}")
                return True
    except ssl.SSLError as e:
        print(f"SSL Error for {domain}: {e}")
        return False
    except socket.gaierror as e:
        print(f"Domain resolution error for {domain}: {e}")
        return False

# 示例调用
check_ssl_certificate("example.com")