def do_discover(self) -> None:
"""Send number of discovery datagrams."""
req = json.dumps(Discover.DISCOVERY_QUERY)
_LOGGER.debug("[DISCOVERY] %s >> %s", self.target,
Discover.DISCOVERY_QUERY)
encrypted_req = TPLinkSmartHomeProtocol.encrypt(req)
for i in range(self.discovery_packets):
self.transport.sendto(encrypted_req[4:],
self.target) # type: ignore
class _DiscoverProtocol(asyncio.DatagramProtocol):
"""Implementation of the discovery protocol handler.
This is internal class, use :func:Discover.discover: instead.
"""
discovered_devices: Dict[str, SmartDevice]
discovered_devices_raw: Dict[str, Dict]
def __init__(
self,
*,
on_discovered: OnDiscoveredCallable = None,
target: str = "255.255.255.255",
timeout: int = 5,
discovery_packets: int = 3,
):
self.transport = None
self.tries = discovery_packets
self.timeout = timeout
self.on_discovered = on_discovered
self.protocol = TPLinkSmartHomeProtocol()
self.target = (target, Discover.DISCOVERY_PORT)
self.discovered_devices = {}
self.discovered_devices_raw = {}
def connection_made(self, transport) -> None:
"""Set socket options for broadcasting."""
self.transport = transport
sock = transport.get_extra_info("socket")
sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.do_discover()
def do_discover(self) -> None:
"""Send number of discovery datagrams."""
req = json.dumps(Discover.DISCOVERY_QUERY)
_LOGGER.debug("[DISCOVERY] %s >> %s", self.target,
Discover.DISCOVERY_QUERY)
encrypted_req = self.protocol.encrypt(req)
for i in range(self.tries):
self.transport.sendto(encrypted_req[4:],
self.target) # type: ignore
def datagram_received(self, data, addr) -> None:
"""Handle discovery responses."""
ip, port = addr
if ip in self.discovered_devices:
return
info = json.loads(self.protocol.decrypt(data))
_LOGGER.debug("[DISCOVERY] %s << %s", ip, info)
device_class = Discover._get_device_class(info)
device = device_class(ip)
self.discovered_devices[ip] = device
self.discovered_devices_raw[ip] = info
if device_class is not None:
if self.on_discovered is not None:
asyncio.ensure_future(self.on_discovered(device))
else:
_LOGGER.error("Received invalid response: %s", info)
def error_received(self, ex):
"""Handle asyncio.Protocol errors."""
_LOGGER.error("Got error: %s", ex)
def connection_lost(self, ex):
"""NOP implementation of connection lost."""