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https://github.com/python-kasa/python-kasa.git
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af90a36153
* add typing hints to make it easier for 3rd party developers to use the library * remove unused devicetype enum to support python3.3 * add python 3.3 to travis and tox, install typing module in setup.py
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
import socket
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import logging
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import json
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from typing import Dict
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from pyHS100 import TPLinkSmartHomeProtocol, SmartDevice, SmartPlug, SmartBulb
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_LOGGER = logging.getLogger(__name__)
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class Discover:
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@staticmethod
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def discover(protocol: TPLinkSmartHomeProtocol = None,
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port: int = 9999,
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timeout: int = 3) -> Dict[str, SmartDevice]:
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"""
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Sends discovery message to 255.255.255.255:9999 in order
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to detect available supported devices in the local network,
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and waits for given timeout for answers from devices.
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:param protocol: Protocol implementation to use
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:param timeout: How long to wait for responses, defaults to 5
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:param port: port to send broadcast messages, defaults to 9999.
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:rtype: dict
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:return: Array of json objects {"ip", "port", "sys_info"}
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"""
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if protocol is None:
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protocol = TPLinkSmartHomeProtocol()
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discovery_query = {"system": {"get_sysinfo": None},
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"emeter": {"get_realtime": None}}
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target = "255.255.255.255"
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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sock.settimeout(timeout)
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req = json.dumps(discovery_query)
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_LOGGER.debug("Sending discovery to %s:%s", target, port)
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encrypted_req = protocol.encrypt(req)
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sock.sendto(encrypted_req[4:], (target, port))
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devices = {}
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_LOGGER.debug("Waiting %s seconds for responses...", timeout)
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try:
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while True:
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data, addr = sock.recvfrom(4096)
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ip, port = addr
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info = json.loads(protocol.decrypt(data))
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if "system" in info and "get_sysinfo" in info["system"]:
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sysinfo = info["system"]["get_sysinfo"]
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if "type" in sysinfo:
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type = sysinfo["type"]
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elif "mic_type" in sysinfo:
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type = sysinfo["mic_type"]
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else:
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_LOGGER.error("Unable to find the device type field!")
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type = "UNKNOWN"
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else:
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_LOGGER.error("No 'system' nor 'get_sysinfo' in response")
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if "smartplug" in type.lower():
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devices[ip] = SmartPlug(ip)
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elif "smartbulb" in type.lower():
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devices[ip] = SmartBulb(ip)
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except socket.timeout:
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_LOGGER.debug("Got socket timeout, which is okay.")
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except Exception as ex:
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_LOGGER.error("Got exception %s", ex, exc_info=True)
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return devices
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