免费内网穿透动态域名

import dns.resolver
import requests

def update_dns(domain, username, password, ip):
    try:
        # 获取当前DNS记录
        answers = dns.resolver.resolve(domain, 'A')
        for rdata in answers:
            if rdata.address != ip:
                # 更新DNS记录
                response = requests.post(f'https://dnsprovider.com/update?username={username}&password={password}&domain={domain}&record={rdata.name}&type=A&value={ip}')
                if response.status_code == 200:
                    print(f'DNS record updated successfully: {domain} -> {ip}')
                else:
                    print(f'Failed to update DNS record: {response.text}')
    except dns.resolver.NXDOMAIN:
        print(f'Domain {domain} does not exist.')
    except dns.resolver.NoAnswer:
        print(f'No answer for domain {domain}.')
    except dns.resolver.Timeout:
        print(f'Timeout while resolving domain {domain}.')

# 示例调用
update_dns('example.com', 'your_username', 'your_password', '192.168.1.100')