mirror of
https://github.com/CCOSTAN/Home-AssistantConfig.git
synced 2025-11-06 17:51:36 +00:00
68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
"""
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Code adapted from Dan Krause.
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https://gist.github.com/dankrause/6000248
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http://github.com/dankrause
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"""
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import socket
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import six
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from six.moves import http_client
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ST_DIAL = 'urn:dial-multiscreen-org:service:dial:1'
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ST_ECP = 'roku:ecp'
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class _FakeSocket(six.BytesIO):
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def makefile(self, *args, **kw):
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return self
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class SSDPResponse(object):
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def __init__(self, response):
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self.location = response.getheader('location')
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self.usn = response.getheader('usn')
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self.st = response.getheader('st')
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self.cache = response.getheader('cache-control').split('=')[1]
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def __repr__(self):
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return '<SSDPResponse({location}, {st}, {usn})'.format(**self.__dict__)
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def discover(timeout=2, retries=1, st=ST_ECP):
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group = ('239.255.255.250', 1900)
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message = '\r\n'.join([
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'M-SEARCH * HTTP/1.1',
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'HOST: {0}:{1}'.format(*group),
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'MAN: "ssdp:discover"',
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'ST: {st}', 'MX: 3', '', ''])
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socket.setdefaulttimeout(timeout)
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responses = {}
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for _ in range(retries):
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sock = socket.socket(
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socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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sock.setsockopt(socket.IPPROTO_IP, socket.IP_MULTICAST_TTL, 2)
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m = message.format(st=st)
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if six.PY2:
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sock.sendto(m, group)
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elif six.PY3:
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sock.sendto(m.encode(), group)
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while 1:
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try:
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rhttp = http_client.HTTPResponse(_FakeSocket(sock.recv(1024)))
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rhttp.begin()
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if rhttp.status == 200:
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rssdp = SSDPResponse(rhttp)
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responses[rssdp.location] = rssdp
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except socket.timeout:
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break
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return responses.values()
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