Function _source_tuple

dns/asyncquery.py:66–79

(af, address, port)

def _source_tuple(af, address, port):
    # Make a high level source tuple, or return None if address and port
    # are both None
    if address or port:
        if address is None:
            if af == socket.AF_INET:
                address = "0.0.0.0"
            elif af == socket.AF_INET6:
                address = "::"
            else:
                raise NotImplementedError(f"unknown address family {af}")
        return (address, port)
    else:
        return None


def _timeout(expiration, now=None):