老域名的优点有哪些

import dns.resolver
import http.server
import socketserver

# DNS解析
def resolve_domain(domain):
    try:
        answers = dns.resolver.resolve(domain, 'A')
        return answers[0].address
    except Exception as e:
        print(f"DNS解析失败: {e}")
        return None

# 重定向服务器
class RedirectHandler(http.server.SimpleHTTPRequestHandler):
    def do_GET(self):
        self.send_response(301)
        self.send_header('Location', 'http://newdomain.com' + self.path)
        self.end_headers()

if __name__ == "__main__":
    old_domain = "olddomain.com"
    new_domain = "newdomain.com"
    
    old_ip = resolve_domain(old_domain)
    if old_ip:
        with socketserver.TCPServer((old_ip, 80), RedirectHandler) as httpd:
            print(f"重定向服务器启动: http://{old_ip}:80")
            httpd.serve_forever()