async def _get_services(self, host: IPv4Address, timeout: int) -> mdns.Response:
port = int(os.environ.get("PYATV_UDNS_PORT", 5353)) # For testing purposes
knocker = None
try:
knocker = await knock.knocker(host, KNOCK_PORTS, self.loop, timeout=timeout)
response = await mdns.unicast(
self.loop, str(host), ALL_SERVICES, port=port, timeout=timeout
)
except asyncio.TimeoutError:
return mdns.Response([], False, None)
finally:
if knocker:
knocker.cancel()
return response
async def _multicast(loop, services, **kwargs):
hosts = set(service.address for service in udns_server.services.values())
devices = {}
sleep_proxy = udns_server.sleep_proxy
udns_server.sleep_proxy = False
for host in hosts:
udns_server.ip_filter = host
response = await mdns.unicast(
loop, "127.0.0.1", services, port=udns_server.port
)
devices[IPv4Address(host)] = mdns.Response(
response.services, sleep_proxy, response.model
)
return devices
async def _multicast(loop, services, **kwargs):
# Flatten list of lists of addresses: [["1.2.3.4"], ["2.2.2.2"]] -> ["1.2.3.4", "2.2.2.2"]
hosts = set(
chain(*[
service.addresses for service in udns_server.services.values()
]))
devices = {}
sleep_proxy = udns_server.sleep_proxy
udns_server.sleep_proxy = False
for host in hosts:
udns_server.ip_filter = host
response = await mdns.unicast(loop,
"127.0.0.1",
services,
port=udns_server.port)
devices[IPv4Address(host)] = mdns.Response(response.services,
sleep_proxy,
response.model)
return devices