def __init__(self, pairing_data):
"""
:param pairing_data:
:raises AccessoryNotFoundError: if the device can not be found via zeroconf
"""
connected = False
if 'AccessoryIP' in pairing_data and 'AccessoryPort' in pairing_data:
# if it is known, try it
accessory_ip = pairing_data['AccessoryIP']
accessory_port = pairing_data['AccessoryPort']
conn = HomeKitHTTPConnection(accessory_ip, port=accessory_port)
try:
conn.connect()
c2a_key, a2c_key = get_session_keys(conn, pairing_data)
connected = True
except Exception as e:
connected = False
if not connected:
# no connection yet, so ip / port might have changed and we need to fall back to slow zeroconf lookup
device_id = pairing_data['AccessoryPairingID']
connection_data = find_device_ip_and_port(device_id)
if connection_data is None:
raise AccessoryNotFoundError(
'Device {id} not found'.format(id=pairing_data['AccessoryPairingID']))
conn = HomeKitHTTPConnection(connection_data['ip'], port=connection_data['port'])
pairing_data['AccessoryIP'] = connection_data['ip']
pairing_data['AccessoryPort'] = connection_data['port']
c2a_key, a2c_key = get_session_keys(conn, pairing_data)
self.sock = conn.sock
self.c2a_key = c2a_key
self.a2c_key = a2c_key
self.pairing_data = pairing_data
self.sec_http = SecureHttp(self)
def _connect(self, accessory_ip, accessory_port):
conn = HomeKitHTTPConnection(accessory_ip, port=accessory_port)
try:
conn.connect()
write_fun = create_ip_pair_verify_write(conn)
state_machine = get_session_keys(self.pairing_data)
request, expected = state_machine.send(None)
while True:
try:
response = write_fun(request, expected)
request, expected = state_machine.send(response)
except StopIteration as result:
self.c2a_key, self.a2c_key = result.value
self.sock = conn.sock
return True
except Exception:
logging.exception("Failed to connect to accessory")
return False