def get(self): # overload get() from parent
"""Get the next response from the network.
Arguments: None
Returns: a received datagram, may be empty only with time and retry
number.
"""
if self._count < 0:
return
while True:
_o_datagram = super().get()
if _o_datagram is None:
self._count -= 1
_o_dummy_datagram = SSDPdatagram()
if self._count > 0:
super().request()
self._retry += 1
_o_dummy_datagram.request = self._retry
#return _rel_time + 's ' + str(self._retry) + '\r\n'
else:
self._count = -1
_o_dummy_datagram.request = 0
#return _rel_time + 's ' + '0' + '\r\n'
return _o_dummy_datagram.fdevice(
base_time=self._timestamp_first_request)
else:
_device = _o_datagram.ipaddr + ' ' +_o_datagram.uuid
if _device not in self._devicelist:
self._devicelist.append(_device)
_o_datagram.request = self._retry
return _o_datagram.fdevice(
base_time=self._timestamp_first_request,
verbose=self._verbose)
def test3_fdevice(self):
"""Test formating device from listen datagram without addr and data."""
o_datagram = SSDPdatagram()
result = o_datagram.fdevice()
self.assertEqual(result, '0000.0000s 0\r\n')
result = o_datagram.fdevice(base_time=time() - 1.5)
self.assertRegex(result, r'^0001\.\d\d\d\ds 0\r\n$')
def test8_fdevice(self):
"""Test format device verbose listen datagram without addr and data."""
o_datagram = SSDPdatagram()
result = o_datagram.fdevice(verbose=True)
self.assertEqual(result, '0000.0000s 0\r\n')
result = o_datagram.fdevice(base_time=time() - 1.5, verbose=True)
self.assertRegex(result, r'^0001\.\d\d\d\ds 0\r\n$')
def test9_fdevice(self):
"""Test formating device verbose from listen datagram without data."""
o_datagram = SSDPdatagram(addr=LADDR1)
o_datagram.request = 2
result = o_datagram.fdevice(verbose=True)
self.assertEqual(result, '0000.0000s 2 192.168.10.86:57535\r\n')
result = o_datagram.fdevice(base_time=time() - 1.5, verbose=True)
self.assertRegex(result, (r'^0001\.\d\d\d\ds 2 '
r'192\.168\.10\.86:57535\r\n$'))
def test10_fdevice(self):
"""Test formating device verbose from listen datagram without addr."""
o_datagram = SSDPdatagram(raw_data=LDATAGRAM1)
o_datagram.request = 4
result = o_datagram.fdevice(verbose=True)
self.assertEqual(result, '0000.0000s 4\r\n' + LDATAGRAM1.decode())
result = o_datagram.fdevice(base_time=time() - 1.5, verbose=True)
self.assertRegex(result[:9], r'^0001\.\d\d\d\d$')
self.assertEqual(result[9:], 's 4\r\n' + LDATAGRAM1.decode())
def _get_datagram(self):
"""Listen to the next SSDP datagram on the local network"""
if self._timeout != 0:
try:
data, addr = self._sock.recvfrom(self.RECVBUF)
if len(data) >= self.RECVBUF:
raise SystemExit("ERROR: receive buffer overflow")
self._o_datagram = SSDPdatagram(addr, data)
except KeyboardInterrupt:
self._timeout = 0
def test7_fdevice(self):
"""Test formating a device verbose output from a listen datagram."""
o_datagram = SSDPdatagram(addr=LADDR1, raw_data=LDATAGRAM1)
o_datagram.request = 3
result = o_datagram.fdevice(verbose=True)
self.assertEqual(
result,
'0000.0000s 3 192.168.10.86:57535\r\n' + LDATAGRAM1.decode())
result = o_datagram.fdevice(base_time=time() - 1.5, verbose=True)
self.assertRegex(result[:9], r'^0001\.\d\d\d\d$')
self.assertEqual(result[9:],
's 3 192.168.10.86:57535\r\n' + LDATAGRAM1.decode())
def test6_fdevice(self):
"""Test formating a device verbose output from a search datagram."""
o_datagram = SSDPdatagram(addr=SADDR1, raw_data=SDATAGRAM1)
result = o_datagram.fdevice(verbose=True)
self.assertEqual(
result,
'0000.0000s 0 192.168.10.119:47383\r\n' + SDATAGRAM1.decode())
result = o_datagram.fdevice(time() + 2, verbose=True)
self.assertEqual(
result,
'0000.0000s 0 192.168.10.119:47383\r\n' + SDATAGRAM1.decode())
result = o_datagram.fdevice(base_time=time() - 1.5, verbose=True)
self.assertRegex(result[:9], r'^0001\.\d\d\d\d$')
self.assertEqual(result[9:],
's 0 192.168.10.119:47383\r\n' + SDATAGRAM1.decode())
def test5_fdevice(self):
"""Test formating device output from a listen datagram without addr."""
o_datagram = SSDPdatagram(raw_data=LDATAGRAM1)
o_datagram.request = 4
result = o_datagram.fdevice()
self.assertEqual(
result,
('0000.0000s 4 NOTIFY uuid:f4f7681c-3056-11e8-86bd-87a6e4e2c42d '
'Linux/4.14.71-v7+, UPnP/1.0, Portable SDK for UPnP '
'devices/1.6.19+git20160116\r\n'))
result = o_datagram.fdevice(base_time=time() - 1.5)
self.assertRegex(result, (
r'^0001\.\d\d\d\ds 4 NOTIFY '
r'uuid:f4f7681c-3056-11e8-86bd-87a6e4e2c42d Linux/4\.14\.71-v7\+, '
r'UPnP/1\.0, Portable SDK for UPnP devices/1\.6\.19\+git20160116'
r'\r\n$'))
def test5_ssdp_datagram(self):
"""Test structure of a SSDP datagram object from listen."""
o_datagram = SSDPdatagram(addr=LADDR1, raw_data=LDATAGRAM1)
self.assertAlmostEqual(o_datagram.timestamp, time(), 2)
self.assertEqual(o_datagram.ipaddr, '192.168.10.86')
self.assertEqual(o_datagram.port, '57535')
self.assertEqual(o_datagram.request, 0)
self.assertEqual(o_datagram.method, 'NOTIFY')
self.assertEqual(o_datagram.host, '239.255.255.250:1900')
self.assertEqual(o_datagram.cache_control, 'max-age=100')
self.assertEqual(o_datagram.location,
'http://192.168.10.86:49494/description.xml')
self.assertEqual(o_datagram.opt,
'"http://schemas.upnp.org/upnp/1/0/"; ns=01')
self.assertEqual(o_datagram.x01_nls,
'293e3a3c-760d-11e8-8719-a7d281e29bfc')
self.assertEqual(o_datagram.nt,
'urn:schemas-upnp-org:device:MediaRenderer:1')
self.assertEqual(o_datagram.nts, 'ssdp:alive')
self.assertEqual(o_datagram.server,
('Linux/4.14.71-v7+, UPnP/1.0, Portable SDK for UPnP '
'devices/1.6.19+git20160116'))
self.assertEqual(o_datagram.x_user_agent, 'redsonic')
self.assertEqual(o_datagram.usn,
('uuid:f4f7681c-3056-11e8-86bd-87a6e4e2c42d'
'::urn:schemas-upnp-org:device:MediaRenderer:1'))
self.assertEqual(o_datagram.uuid,
'f4f7681c-3056-11e8-86bd-87a6e4e2c42d')
self.assertEqual(o_datagram.data, LDATAGRAM1.decode())
def get(self):
"""Get next SSDP datagram from multicast net within a timeout.
This method returns a SSDPdatagram object that represents a received
SSDP record from an upnp root device on the local netwwork. A call
returns only when a datagram has received or when the timeout has
expired. The timeout is the given response time for the devices (plus a
small network delay).
"""
if self._response_time == 0:
return
else:
try:
# The timeout (in sec) for the socket is reduced after every
# received data so the over all transfer has finished after the
# given response time (plus a small network delay added).
_tout = int(round(
self._response_time \
- (time() - self._timestamp_request))) \
+ 1
self._sock.settimeout(_tout)
data, addr = self._sock.recvfrom(self.RECVBUF)
if len(data) >= self.RECVBUF:
raise SystemExit("ERROR: receive buffer overflow")
return SSDPdatagram(addr, data)
except socket.timeout:
self._response_time = 0
return
def test2_fdevice(self):
"""Test formating a device output from a listen datagram."""
o_datagram = SSDPdatagram(addr=LADDR1, raw_data=LDATAGRAM1)
o_datagram.request = 3
result = o_datagram.fdevice()
self.assertEqual(
result,
('0000.0000s 3 NOTIFY 192.168.10.86:57535 '
'uuid:f4f7681c-3056-11e8-86bd-87a6e4e2c42d Linux/4.14.71-v7+, '
'UPnP/1.0, Portable SDK for UPnP devices/1.6.19+git20160116\r\n'))
result = o_datagram.fdevice(base_time=time() - 1.5)
self.assertRegex(result, (
r'^0001\.\d\d\d\ds 3 NOTIFY 192\.168\.10\.86:57535 '
r'uuid:f4f7681c-3056-11e8-86bd-87a6e4e2c42d Linux/4\.14\.71-v7\+, '
r'UPnP/1\.0, Portable SDK for UPnP devices/1\.6\.19\+git20160116'
r'\r\n$'))
def test1_ssdp_datagram(self):
"""Test structure of a SSDP datagram object from search response."""
o_datagram = SSDPdatagram(addr=SADDR1, raw_data=SDATAGRAM1)
self.assertAlmostEqual(o_datagram.timestamp, time(), 2)
self.assertEqual(len(o_datagram.__dict__), 17)
self.assertEqual(o_datagram.method, '')
self.assertEqual(o_datagram.bootid_upnp_org, '0')
self.assertEqual(o_datagram.cache_control, 'max-age=1800')
self.assertEqual(o_datagram.configid_upnp_org, '1')
self.assertEqual(o_datagram.date, 'Sun, 23 Sep 2018 17:08:38 GMT')
self.assertEqual(o_datagram.ext, '')
self.assertEqual(o_datagram.ipaddr, '192.168.10.119')
self.assertEqual(o_datagram.location,
('http://192.168.10.119:8008/ssdp/device-desc.xml'))
self.assertEqual(o_datagram.opt, '"http://schemas.upnp.org/upnp/1/0/";'
' ns=01')
self.assertEqual(o_datagram.port, '47383')
self.assertEqual(o_datagram.request, 0)
self.assertEqual(
o_datagram.server, 'Linux/3.10.79, UPnP/1.0, '
'Portable SDK for UPnP devices/1.6.18')
self.assertEqual(o_datagram.st, 'upnp:rootdevice')
self.assertEqual(
o_datagram.usn,
('uuid:3b2867a3-b55f-8e77-5ad8-a6d0c6990277::upnp:rootdevice'))
self.assertEqual(o_datagram.uuid,
'3b2867a3-b55f-8e77-5ad8-a6d0c6990277')
self.assertEqual(o_datagram.x01_nls,
'd2631d76-1dd1-11b2-9c2f-ee4373b37081')
self.assertEqual(o_datagram.x_user_agent, 'redsonic')
self.assertEqual(o_datagram.data, SDATAGRAM1.decode())
def test2_ssdp_datagram(self):
"""Test SSDP datagram from search response without addr and data."""
o_datagram = SSDPdatagram()
self.assertAlmostEqual(o_datagram.timestamp, time(), 2)
self.assertEqual(len(o_datagram.__dict__), 4)
self.assertEqual(o_datagram.ipaddr, '')
self.assertEqual(o_datagram.port, '')
self.assertEqual(o_datagram.method, '')
self.assertEqual(o_datagram.request, 0)
self.assertIsNone(o_datagram.data)
def test4_ssdp_datagram(self):
"""Test SSDP datagram from search response without addr."""
o_datagram = SSDPdatagram(raw_data=SDATAGRAM1)
self.assertAlmostEqual(o_datagram.timestamp, time(), 2)
self.assertEqual(len(o_datagram.__dict__), 17)
self.assertEqual(o_datagram.ipaddr, '')
self.assertEqual(o_datagram.port, '')
self.assertEqual(o_datagram.method, '')
self.assertEqual(o_datagram.request, 0)
self.assertEqual(o_datagram.data, SDATAGRAM1.decode())
def test3_ssdp_datagram(self):
"""Test SSDP datagram from search response without data."""
o_datagram = SSDPdatagram(addr=SADDR1)
self.assertAlmostEqual(o_datagram.timestamp, time(), 2)
self.assertEqual(len(o_datagram.__dict__), 4)
self.assertEqual(o_datagram.ipaddr, '192.168.10.119')
self.assertEqual(o_datagram.port, '47383')
self.assertEqual(o_datagram.method, '')
self.assertEqual(o_datagram.request, 0)
self.assertIsNone(o_datagram.data)
def test1_fdevice(self):
"""Test formating a device output from a search datagram."""
o_datagram = SSDPdatagram(addr=SADDR1, raw_data=SDATAGRAM1)
result = o_datagram.fdevice()
self.assertEqual(
result,
('0000.0000s 0 192.168.10.119:47383 '
'uuid:3b2867a3-b55f-8e77-5ad8-a6d0c6990277 Linux/3.10.79, '
'UPnP/1.0, Portable SDK for UPnP devices/1.6.18\r\n'))
result = o_datagram.fdevice(time() + 2)
self.assertEqual(
result,
('0000.0000s 0 192.168.10.119:47383 '
'uuid:3b2867a3-b55f-8e77-5ad8-a6d0c6990277 Linux/3.10.79, '
'UPnP/1.0, Portable SDK for UPnP devices/1.6.18\r\n'))
result = o_datagram.fdevice(base_time=time() - 1.5)
self.assertRegex(
result,
(r'^0001\.\d\d\d\ds 0 192\.168\.10\.119:47383 '
r'uuid:3b2867a3-b55f-8e77-5ad8-a6d0c6990277 Linux/3\.10\.79, '
r'UPnP/1\.0, Portable SDK for UPnP devices/1\.6\.18\r\n$'))
class Listen(Mcast):
"""Passive listen for notifies from devices on the local network
We are only listen to the upnp multicast group.
"""
_verbose = False
_open_timestamp = 0
_timeout = 0
_sock = None
_o_datagram = None
def __init__(self, verbose=False):
"""Setup verbose output if requested."""
self._verbose = verbose
def open(self):
"""Initialize and open a connection and join to the multicast group"""
self._open_timestamp = time()
self._timeout = -1
self._sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM,
socket.IPPROTO_UDP)
self._sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# use MCAST_GRP instead of '' to listen only to MCAST_GRP,
# not all groups on MCAST_PORT
# self._sock.bind(('', self._MCAST_PORT))
self._sock.bind((self._MCAST_GRP, self._MCAST_PORT))
mreq = struct.pack("4sl", socket.inet_aton(self._MCAST_GRP),
socket.INADDR_ANY)
self._sock.setsockopt(socket.IPPROTO_IP, socket.IP_ADD_MEMBERSHIP,
mreq)
def _get_datagram(self):
"""Listen to the next SSDP datagram on the local network"""
if self._timeout != 0:
try:
data, addr = self._sock.recvfrom(self.RECVBUF)
if len(data) >= self.RECVBUF:
raise SystemExit("ERROR: receive buffer overflow")
self._o_datagram = SSDPdatagram(addr, data)
except KeyboardInterrupt:
self._timeout = 0
def get(self):
"""Listen for upnp datagrams on the local network."""
self._get_datagram()
if self._timeout == 0:
return
return self._o_datagram.fdevice(base_time=self._open_timestamp,
verbose=self._verbose)
