"""

import asyncio

import ipaddress

import random

from functools import lru_cache

from ipaddress import IPv4Address, IPv6Address, _BaseAddress, ip_address

from typing import TYPE_CHECKING, Dict, List, Optional, Set, Union, cast

from .._dns import (

return info.name[: -len(service_name) - 1]

_cached_ip_addresses = lru_cache(maxsize=256)(ipaddress.ip_address)

_cached_ip_addresses = lru_cache(maxsize=256)(ip_address)

class ServiceInfo(RecordUpdateListener):

self.type = type_

self._name = name

self.key = name.lower()

self._ipv4_addresses: List[ipaddress.IPv4Address] = []

self._ipv6_addresses: List[ipaddress.IPv6Address] = []

self._ipv4_addresses: List[IPv4Address] = []

self._ipv6_addresses: List[IPv6Address] = []

if addresses is not None:

self.addresses = addresses

elif parsed_addresses is not None:

def ip_addresses_by_version(

self, version: IPVersion

) -> Union[List[ipaddress.IPv4Address], List[ipaddress.IPv6Address], List[ipaddress._BaseAddress]]:

) -> Union[List[IPv4Address], List[IPv6Address], List[_BaseAddress]]:

"""List ip_address objects matching IP version.

Addresses are guaranteed to be returned in LIFO (last in, first out)

def _ip_addresses_by_version_value(

self, version_value: int

) -> Union[List[ipaddress.IPv4Address], List[ipaddress.IPv6Address], List[ipaddress._BaseAddress]]:

) -> Union[List[IPv4Address], List[IPv6Address], List[_BaseAddress]]:

"""Backend for addresses_by_version that uses the raw value."""

if version_value == _IPVersion_All_value:

return [*self._ipv4_addresses, *self._ipv6_addresses]

def _get_ip_addresses_from_cache_lifo(

self, zc: 'Zeroconf', now: float, type: int

) -> List[Union[ipaddress.IPv4Address, ipaddress.IPv6Address]]:

) -> List[Union[IPv4Address, IPv6Address]]:

"""Set IPv6 addresses from the cache."""

address_list: List[Union[ipaddress.IPv4Address, ipaddress.IPv6Address]] = []

address_list: List[Union[IPv4Address, IPv6Address]] = []

for record in self._get_address_records_from_cache_by_type(zc, type):

if record.is_expired(now):

continue

try:

ip_address = _cached_ip_addresses(record.address)

ip_addr = _cached_ip_addresses(record.address)

except ValueError:

continue

else:

address_list.append(ip_address)

address_list.append(ip_addr)

address_list.reverse() # Reverse to get LIFO order

return address_list

def _set_ipv6_addresses_from_cache(self, zc: 'Zeroconf', now: float) -> None:

"""Set IPv6 addresses from the cache."""

self._ipv6_addresses = cast(

"List[ipaddress.IPv6Address]", self._get_ip_addresses_from_cache_lifo(zc, now, _TYPE_AAAA)

"List[IPv6Address]", self._get_ip_addresses_from_cache_lifo(zc, now, _TYPE_AAAA)

)

def _set_ipv4_addresses_from_cache(self, zc: 'Zeroconf', now: float) -> None:

"""Set IPv4 addresses from the cache."""

self._ipv4_addresses = cast(

"List[ipaddress.IPv4Address]", self._get_ip_addresses_from_cache_lifo(zc, now, _TYPE_A)

"List[IPv4Address]", self._get_ip_addresses_from_cache_lifo(zc, now, _TYPE_A)

)

def update_record(self, zc: 'Zeroconf', now: float, record: Optional[DNSRecord]) -> None:

if record.is_expired(now):

return False

if record.key == self.server_key and isinstance(record, DNSAddress):

record_key = record.key

if record_key == self.server_key and type(record) is DNSAddress:

try:

ip_addr = _cached_ip_addresses(record.address)

except ValueError as ex:

log.warning("Encountered invalid address while processing %s: %s", record, ex)

return False

if ip_addr.version == 4:

if not self._ipv4_addresses:

if type(ip_addr) is IPv4Address:

if self._ipv4_addresses:

self._set_ipv4_addresses_from_cache(zc, now)

if ip_addr not in self._ipv4_addresses:

self._ipv4_addresses.insert(0, ip_addr)

ipv4_addresses = self._ipv4_addresses

if ip_addr not in ipv4_addresses:

ipv4_addresses.insert(0, ip_addr)

return True

elif ip_addr != self._ipv4_addresses[0]:

self._ipv4_addresses.remove(ip_addr)

self._ipv4_addresses.insert(0, ip_addr)

elif ip_addr != ipv4_addresses[0]:

ipv4_addresses.remove(ip_addr)

ipv4_addresses.insert(0, ip_addr)

return False

if not self._ipv6_addresses:

self._set_ipv6_addresses_from_cache(zc, now)

ipv6_addresses = self._ipv6_addresses

if ip_addr not in self._ipv6_addresses:

self._ipv6_addresses.insert(0, ip_addr)

ipv6_addresses.insert(0, ip_addr)

return True

elif ip_addr != self._ipv6_addresses[0]:

self._ipv6_addresses.remove(ip_addr)

self._ipv6_addresses.insert(0, ip_addr)

ipv6_addresses.remove(ip_addr)

ipv6_addresses.insert(0, ip_addr)

return False

if record.key != self.key:

if record_key != self.key:

return False

if record.type == _TYPE_TXT and isinstance(record, DNSText):

if record.type == _TYPE_TXT and type(record) is DNSText:

self._set_text(record.text)

return True

if record.type == _TYPE_SRV and isinstance(record, DNSService):

if record.type == _TYPE_SRV and type(record) is DNSService:

old_server_key = self.server_key

self.name = record.name

self.server = record.server

name = self.server or self.name

ttl = override_ttl if override_ttl is not None else self.host_ttl

class_ = _CLASS_IN | _CLASS_UNIQUE

version_value = version.value

return [

DNSAddress(

name,

_TYPE_AAAA if address.version == 6 else _TYPE_A,

_TYPE_AAAA if type(ip_addr) is IPv6Address else _TYPE_A,

class_,

ttl,

address.packed,

ip_addr.packed,

created=created,

)

for address in self._ip_addresses_by_version_value(version.value)

for ip_addr in self._ip_addresses_by_version_value(version_value)

]

def dns_pointer(self, override_ttl: Optional[int] = None, created: Optional[float] = None) -> DNSPointer: