动态域名解析被关停

import socket
import threading
import time

# 模拟DNS记录
dns_records = {
    'example.com': '192.168.1.1'
}

def update_dns_record(domain, ip):
    dns_records[domain] = ip
    print(f"Updated DNS record: {domain} -> {ip}")

def ddns_client():
    while True:
        # 模拟获取当前IP地址
        current_ip = '192.168.1.1'  # 实际应用中需要获取真实的IP地址
        update_dns_record('example.com', current_ip)
        time.sleep(60)  # 每分钟检查一次IP地址

def ddns_server():
    server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    server.bind(('0.0.0.0', 53))
    print("DDNS server started")

    while True:
        data, addr = server.recvfrom(1024)
        domain = data.decode().split()[1].strip('.')
        if domain in dns_records:
            response = f"HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\n\r\n{dns_records[domain]}"
        else:
            response = "HTTP/1.1 404 Not Found\r\nContent-Type: text/plain\r\n\r\nNot found"
        server.sendto(response.encode(), addr)

if __name__ == "__main__":
    client_thread = threading.Thread(target=ddns_client)
    server_thread = threading.Thread(target=ddns_server)

    client_thread.start()
    server_thread.start()

    client_thread.join()
    server_thread.join()