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disconnect.py
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disconnect.py
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"""Abstraction to send DisconnectRequest and wait for DisconnectResponse."""
from typing import TYPE_CHECKING
from xknx.knxip import HPAI, DisconnectRequest, DisconnectResponse, KNXIPFrame
from .request_response import RequestResponse
if TYPE_CHECKING:
from xknx.io.udp_client import UDPClient
from xknx.xknx import XKNX
class Disconnect(RequestResponse):
"""Class to send a DisconnectRequest and wait for a DisconnectResponse."""
def __init__(
self,
xknx: "XKNX",
udp_client: "UDPClient",
communication_channel_id: int,
route_back: bool = False,
):
"""Initialize Disconnect class."""
self.xknx = xknx
self.udp_client = udp_client
self.route_back = route_back
super().__init__(xknx, self.udp_client, DisconnectResponse)
self.communication_channel_id = communication_channel_id
def create_knxipframe(self) -> KNXIPFrame:
"""Create KNX/IP Frame object to be sent to device."""
if self.route_back:
endpoint = HPAI()
else:
(local_addr, local_port) = self.udpclient.getsockname()
endpoint = HPAI(ip_addr=local_addr, port=local_port)
disconnect_request = DisconnectRequest(
self.xknx,
communication_channel_id=self.communication_channel_id,
control_endpoint=endpoint,
)
return KNXIPFrame.init_from_body(disconnect_request)