分享一下利用家用宽带（动态公网ipv4）+CDN 绕开80和443端口

pip install tencentcloud-sdk-python

from tencentcloud.common import credential
from tencentcloud.common.profile.client_profile import ClientProfile
from tencentcloud.common.profile.http_profile import HttpProfile
from tencentcloud.dnspod.v20210323 import dnspod_client, models
from urllib.request import urlopen  # 添加这行导入语句
import json  # 添加这行导入语句

ipv4_flag = 1  # 是否开启 IPv4 DDNS 解析，1 为开启，0 为关闭
secret_id = "腾讯云id"
secret_key = "腾讯云密钥"
domain = "xxx.xxx"  # 你的主域名
name_ipv4 = "xxx"  # IPv4 DDNS 解析的子域名

cred = credential.Credential(secret_id, secret_key)
httpProfile = HttpProfile()
httpProfile.endpoint = "dnspod.tencentcloudapi.com"

clientProfile = ClientProfile()
clientProfile.httpProfile = httpProfile
client = dnspod_client.DnspodClient(cred, "ap-guangzhou", clientProfile)

def get_records(sub_domain, record_type):
    params = {
        "Domain": domain,
        "SubDomain": sub_domain,
        "RecordType": record_type
    }
    req = models.DescribeRecordListRequest()
    req.from_json_string(json.dumps(params))
    resp = client.DescribeRecordList(req)
    return json.loads(resp.to_json_string())["RecordList"]

def update(record_id, sub_domain, record_type, value):
    params = {
        "Domain": domain,
        "RecordId": record_id,
        "SubDomain": sub_domain,
        "RecordType": record_type,
        "Value": value,
        "RecordLine": "默认"
    }
    req = models.ModifyRecordRequest()
    req.from_json_string(json.dumps(params))
    resp = client.ModifyRecord(req)
    print(resp.to_json_string())

def add(sub_domain, record_type, value):
    params = {
        "Domain": domain,
        "SubDomain": sub_domain,
        "RecordType": record_type,
        "Value": value,
        "RecordLine": "默认"
    }
    req = models.CreateRecordRequest()
    req.from_json_string(json.dumps(params))
    resp = client.CreateRecord(req)
    print(resp.to_json_string())

# IPv4 DDNS 解析
if ipv4_flag == 1:
    # 获取当前 IPv4 地址
    ip = urlopen('https://api-ipv4.ip.sb/ip').read()
    ipv4 = str(ip, encoding='utf-8')
    print("获取到IPv4地址：%s" % ipv4)

    # 获取腾讯云 DNSPod 上的所有记录
    existing_records = get_records(name_ipv4, "A")

    if not existing_records:
        add(name_ipv4, "A", ipv4)
        print("新建域名解析成功")
    else:
        if existing_records[0]["Value"].strip() != ipv4.strip():
            update(existing_records[0]["RecordId"], name_ipv4, "A", ipv4)
            print("修改域名解析成功")
        else:
            print("IPv4 地址未更改")

print("本程序版权属于naigou，博客：https://www.naigou.cn")

cd /root/txddns
python3 txddns.py