duckdns.org

"""
Visit https://www.duckdns.org for more information.

It's a free dyndns service with easy registration.
"""


from urllib.request import urlopen


def update(token, *domains, ip=""):
    """
    The token and at least one domain is required for update.
    The IP is optional. If the IP is not given, duckdns.org
    uses the IP from the request source IP, which is your host.
    """
    url = "https://www.duckdns.org/update"
    query = {
        "domains": ",".join(domains),
        "token": token,
        "ip": ip,
    }
    url += "?" + "&".join(f"{key}={val}" for key, val in query.items())
    try:
        req = urlopen(url, timeout=10)
    except Exception as e:
        print(repr(e))
        return False
    if req.status == 200 and req.read() == b"OK":
        return True
    else:
        return False