/
devices.py
1297 lines (972 loc) · 35.6 KB
/
devices.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
"""
This module contains different types of devices belonging to the `AlarmDecoder`_ (AD2) family.
* :py:class:`USBDevice`: Interfaces with the `AD2USB`_ device.
* :py:class:`SerialDevice`: Interfaces with the `AD2USB`_, `AD2SERIAL`_ or `AD2PI`_.
* :py:class:`SocketDevice`: Interfaces with devices exposed through `ser2sock`_ or another IP to Serial solution.
Also supports SSL if using `ser2sock`_.
.. _ser2sock: http://github.com/nutechsoftware/ser2sock
.. _AlarmDecoder: http://www.alarmdecoder.com
.. _AD2USB: http://www.alarmdecoder.com
.. _AD2SERIAL: http://www.alarmdecoder.com
.. _AD2PI: http://www.alarmdecoder.com
.. moduleauthor:: Scott Petersen <scott@nutech.com>
"""
import time
import threading
import serial
import serial.tools.list_ports
import socket
import select
import sys
from .util import CommError, TimeoutError, NoDeviceError, InvalidMessageError
from .event import event
have_pyftdi = False
try:
from pyftdi.pyftdi.ftdi import Ftdi, FtdiError
import usb.core
import usb.util
have_pyftdi = True
except ImportError:
try:
from pyftdi.ftdi import Ftdi, FtdiError
import usb.core
import usb.util
have_pyftdi = True
except ImportError:
have_pyftdi = False
try:
from OpenSSL import SSL, crypto
have_openssl = True
except ImportError:
class SSL:
class Error(BaseException):
pass
class WantReadError(BaseException):
pass
class SysCallError(BaseException):
pass
have_openssl = False
def bytes_hack(buf):
"""
Hacky workaround for old installs of the library on systems without python-future that were
keeping the 2to3 update from working after auto-update.
"""
ub = None
if sys.version_info > (3,):
ub = buf
else:
ub = bytes(buf)
return ub
class Device(object):
"""
Base class for all `AlarmDecoder`_ (AD2) device types.
"""
# Generic device events
on_open = event.Event("This event is called when the device has been opened.\n\n**Callback definition:** *def callback(device)*")
on_close = event.Event("This event is called when the device has been closed.\n\n**Callback definition:** def callback(device)*")
on_read = event.Event("This event is called when a line has been read from the device.\n\n**Callback definition:** def callback(device, data)*")
on_write = event.Event("This event is called when data has been written to the device.\n\n**Callback definition:** def callback(device, data)*")
def __init__(self):
"""
Constructor
"""
self._id = ''
self._buffer = b''
self._device = None
self._running = False
self._read_thread = None
def __enter__(self):
"""
Support for context manager __enter__.
"""
return self
def __exit__(self, exc_type, exc_value, traceback):
"""
Support for context manager __exit__.
"""
self.close()
return False
@property
def id(self):
"""
Retrieve the device ID.
:returns: identification string for the device
"""
return self._id
@id.setter
def id(self, value):
"""
Sets the device ID.
:param value: device identification string
:type value: string
"""
self._id = value
def is_reader_alive(self):
"""
Indicates whether or not the reader thread is alive.
:returns: whether or not the reader thread is alive
"""
return self._read_thread.is_alive()
def stop_reader(self):
"""
Stops the reader thread.
"""
self._read_thread.stop()
def close(self):
"""
Closes the device.
"""
try:
self._running = False
self._read_thread.stop()
self._device.close()
except Exception:
pass
self.on_close()
class ReadThread(threading.Thread):
"""
Reader thread which processes messages from the device.
"""
READ_TIMEOUT = 10
"""Timeout for the reader thread."""
def __init__(self, device):
"""
Constructor
:param device: device used by the reader thread
:type device: :py:class:`~alarmdecoder.devices.Device`
"""
threading.Thread.__init__(self)
self._device = device
self._running = False
def stop(self):
"""
Stops the running thread.
"""
self._running = False
def run(self):
"""
The actual read process.
"""
self._running = True
while self._running:
try:
self._device.read_line(timeout=self.READ_TIMEOUT)
except TimeoutError:
pass
except InvalidMessageError:
pass
except SSL.WantReadError:
pass
except CommError as err:
self._device.close()
except Exception as err:
self._device.close()
self._running = False
raise
class USBDevice(Device):
"""
`AD2USB`_ device utilizing PyFTDI's interface.
"""
# Constants
PRODUCT_IDS = ((0x0403, 0x6001), (0x0403, 0x6015))
"""List of Vendor and Product IDs used to recognize `AD2USB`_ devices."""
DEFAULT_VENDOR_ID = PRODUCT_IDS[0][0]
"""Default Vendor ID used to recognize `AD2USB`_ devices."""
DEFAULT_PRODUCT_ID = PRODUCT_IDS[0][1]
"""Default Product ID used to recognize `AD2USB`_ devices."""
# Deprecated constants
FTDI_VENDOR_ID = DEFAULT_VENDOR_ID
"""DEPRECATED: Vendor ID used to recognize `AD2USB`_ devices."""
FTDI_PRODUCT_ID = DEFAULT_PRODUCT_ID
"""DEPRECATED: Product ID used to recognize `AD2USB`_ devices."""
BAUDRATE = 115200
"""Default baudrate for `AD2USB`_ devices."""
__devices = []
__detect_thread = None
@classmethod
def find_all(cls, vid=None, pid=None):
"""
Returns all FTDI devices matching our vendor and product IDs.
:returns: list of devices
:raises: :py:class:`~alarmdecoder.util.CommError`
"""
if not have_pyftdi:
raise ImportError('The USBDevice class has been disabled due to missing requirement: pyftdi or pyusb.')
cls.__devices = []
query = cls.PRODUCT_IDS
if vid and pid:
query = [(vid, pid)]
try:
cls.__devices = Ftdi.find_all(query, nocache=True)
except (usb.core.USBError, FtdiError) as err:
raise CommError('Error enumerating AD2USB devices: {0}'.format(str(err)), err)
return cls.__devices
@classmethod
def devices(cls):
"""
Returns a cached list of `AD2USB`_ devices located on the system.
:returns: cached list of devices found
"""
return cls.__devices
@classmethod
def find(cls, device=None):
"""
Factory method that returns the requested :py:class:`USBDevice` device, or the
first device.
:param device: Tuple describing the USB device to open, as returned
by find_all().
:type device: tuple
:returns: :py:class:`USBDevice` object utilizing the specified device
:raises: :py:class:`~alarmdecoder.util.NoDeviceError`
"""
if not have_pyftdi:
raise ImportError('The USBDevice class has been disabled due to missing requirement: pyftdi or pyusb.')
cls.find_all()
if len(cls.__devices) == 0:
raise NoDeviceError('No AD2USB devices present.')
if device is None:
device = cls.__devices[0]
vendor, product, sernum, ifcount, description = device
return USBDevice(interface=sernum, vid=vendor, pid=product)
@classmethod
def start_detection(cls, on_attached=None, on_detached=None):
"""
Starts the device detection thread.
:param on_attached: function to be called when a device is attached **Callback definition:** *def callback(thread, device)*
:type on_attached: function
:param on_detached: function to be called when a device is detached **Callback definition:** *def callback(thread, device)*
:type on_detached: function
"""
if not have_pyftdi:
raise ImportError('The USBDevice class has been disabled due to missing requirement: pyftdi or pyusb.')
cls.__detect_thread = USBDevice.DetectThread(on_attached, on_detached)
try:
cls.find_all()
except CommError:
pass
cls.__detect_thread.start()
@classmethod
def stop_detection(cls):
"""
Stops the device detection thread.
"""
if not have_pyftdi:
raise ImportError('The USBDevice class has been disabled due to missing requirement: pyftdi or pyusb.')
try:
cls.__detect_thread.stop()
except Exception:
pass
@property
def interface(self):
"""
Retrieves the interface used to connect to the device.
:returns: the interface used to connect to the device
"""
return self._interface
@interface.setter
def interface(self, value):
"""
Sets the interface used to connect to the device.
:param value: may specify either the serial number or the device index
:type value: string or int
"""
self._interface = value
if isinstance(value, int):
self._device_number = value
else:
self._serial_number = value
@property
def serial_number(self):
"""
Retrieves the serial number of the device.
:returns: serial number of the device
"""
return self._serial_number
@serial_number.setter
def serial_number(self, value):
"""
Sets the serial number of the device.
:param value: serial number of the device
:type value: string
"""
self._serial_number = value
@property
def description(self):
"""
Retrieves the description of the device.
:returns: description of the device
"""
return self._description
@description.setter
def description(self, value):
"""
Sets the description of the device.
:param value: description of the device
:type value: string
"""
self._description = value
def __init__(self, interface=0, vid=None, pid=None):
"""
Constructor
:param interface: May specify either the serial number or the device
index.
:type interface: string or int
"""
if not have_pyftdi:
raise ImportError('The USBDevice class has been disabled due to missing requirement: pyftdi or pyusb.')
Device.__init__(self)
self._device = Ftdi()
self._interface = 0
self._device_number = 0
self._serial_number = None
self._vendor_id = USBDevice.DEFAULT_VENDOR_ID
if vid:
self._vendor_id = vid
self._product_id = USBDevice.DEFAULT_PRODUCT_ID
if pid:
self._product_id = pid
self._endpoint = 0
self._description = None
self.interface = interface
def open(self, baudrate=BAUDRATE, no_reader_thread=False):
"""
Opens the device.
:param baudrate: baudrate to use
:type baudrate: int
:param no_reader_thread: whether or not to automatically start the
reader thread.
:type no_reader_thread: bool
:raises: :py:class:`~alarmdecoder.util.NoDeviceError`
"""
# Set up defaults
if baudrate is None:
baudrate = USBDevice.BAUDRATE
self._read_thread = Device.ReadThread(self)
# Open the device and start up the thread.
try:
self._device.open(self._vendor_id,
self._product_id,
self._endpoint,
self._device_number,
self._serial_number,
self._description)
self._device.set_baudrate(baudrate)
if not self._serial_number:
self._serial_number = self._get_serial_number()
self._id = self._serial_number
except (usb.core.USBError, FtdiError) as err:
raise NoDeviceError('Error opening device: {0}'.format(str(err)), err)
except KeyError as err:
raise NoDeviceError('Unsupported device. ({0:04x}:{1:04x}) You probably need a newer version of pyftdi.'.format(err[0][0], err[0][1]))
else:
self._running = True
self.on_open()
if not no_reader_thread:
self._read_thread.start()
return self
def close(self):
"""
Closes the device.
"""
try:
Device.close(self)
# HACK: Probably should fork pyftdi and make this call in .close()
self._device.usb_dev.attach_kernel_driver(self._device_number)
except Exception:
pass
def fileno(self):
"""
File number not supported for USB devices.
:raises: NotImplementedError
"""
raise NotImplementedError('USB devices do not support fileno()')
def write(self, data):
"""
Writes data to the device.
:param data: data to write
:type data: string
:raises: :py:class:`~alarmdecoder.util.CommError`
"""
try:
self._device.write_data(data)
self.on_write(data=data)
except FtdiError as err:
raise CommError('Error writing to device: {0}'.format(str(err)), err)
def read(self):
"""
Reads a single character from the device.
:returns: character read from the device
:raises: :py:class:`~alarmdecoder.util.CommError`
"""
ret = None
try:
ret = self._device.read_data(1)
except (usb.core.USBError, FtdiError) as err:
raise CommError('Error reading from device: {0}'.format(str(err)), err)
return ret
def read_line(self, timeout=0.0, purge_buffer=False):
"""
Reads a line from the device.
:param timeout: read timeout
:type timeout: float
:param purge_buffer: Indicates whether to purge the buffer prior to
reading.
:type purge_buffer: bool
:returns: line that was read
:raises: :py:class:`~alarmdecoder.util.CommError`, :py:class:`~alarmdecoder.util.TimeoutError`
"""
def timeout_event():
"""Handles read timeout event"""
timeout_event.reading = False
timeout_event.reading = True
if purge_buffer:
self._buffer = b''
got_line, ret = False, None
timer = threading.Timer(timeout, timeout_event)
if timeout > 0:
timer.start()
try:
while timeout_event.reading:
buf = self._device.read_data(1)
if buf != b'':
ub = bytes_hack(buf)
self._buffer += ub
if ub == b"\n":
self._buffer = self._buffer.rstrip(b"\r\n")
if len(self._buffer) > 0:
got_line = True
break
else:
time.sleep(0.01)
except (usb.core.USBError, FtdiError) as err:
raise CommError('Error reading from device: {0}'.format(str(err)), err)
else:
if got_line:
ret, self._buffer = self._buffer, b''
self.on_read(data=ret)
else:
raise TimeoutError('Timeout while waiting for line terminator.')
finally:
timer.cancel()
return ret
def purge(self):
"""
Purges read/write buffers.
"""
self._device.purge_buffers()
def _get_serial_number(self):
"""
Retrieves the FTDI device serial number.
:returns: string containing the device serial number
"""
return usb.util.get_string(self._device.usb_dev, 64, self._device.usb_dev.iSerialNumber)
class DetectThread(threading.Thread):
"""
Thread that handles detection of added/removed devices.
"""
on_attached = event.Event("This event is called when an `AD2USB`_ device has been detected.\n\n**Callback definition:** def callback(thread, device*")
on_detached = event.Event("This event is called when an `AD2USB`_ device has been removed.\n\n**Callback definition:** def callback(thread, device*")
def __init__(self, on_attached=None, on_detached=None):
"""
Constructor
:param on_attached: Function to call when a device is attached **Callback definition:** *def callback(thread, device)*
:type on_attached: function
:param on_detached: Function to call when a device is detached **Callback definition:** *def callback(thread, device)*
:type on_detached: function
"""
threading.Thread.__init__(self)
if on_attached:
self.on_attached += on_attached
if on_detached:
self.on_detached += on_detached
self._running = False
def stop(self):
"""
Stops the thread.
"""
self._running = False
def run(self):
"""
The actual detection process.
"""
self._running = True
last_devices = set()
while self._running:
try:
current_devices = set(USBDevice.find_all())
for dev in current_devices.difference(last_devices):
self.on_attached(device=dev)
for dev in last_devices.difference(current_devices):
self.on_detached(device=dev)
last_devices = current_devices
except CommError:
pass
time.sleep(0.25)
class SerialDevice(Device):
"""
`AD2USB`_, `AD2SERIAL`_ or `AD2PI`_ device utilizing the PySerial interface.
"""
# Constants
BAUDRATE = 19200
"""Default baudrate for Serial devices."""
@staticmethod
def find_all(pattern=None):
"""
Returns all serial ports present.
:param pattern: pattern to search for when retrieving serial ports
:type pattern: string
:returns: list of devices
:raises: :py:class:`~alarmdecoder.util.CommError`
"""
devices = []
try:
if pattern:
devices = serial.tools.list_ports.grep(pattern)
else:
devices = serial.tools.list_ports.comports()
except serial.SerialException as err:
raise CommError('Error enumerating serial devices: {0}'.format(str(err)), err)
return devices
@property
def interface(self):
"""
Retrieves the interface used to connect to the device.
:returns: interface used to connect to the device
"""
return self._port
@interface.setter
def interface(self, value):
"""
Sets the interface used to connect to the device.
:param value: name of the serial device
:type value: string
"""
self._port = value
def __init__(self, interface=None):
"""
Constructor
:param interface: device to open
:type interface: string
"""
Device.__init__(self)
self._port = interface
self._id = interface
# Timeout = non-blocking to match pyftdi.
self._device = serial.Serial(timeout=0, writeTimeout=0)
def open(self, baudrate=BAUDRATE, no_reader_thread=False):
"""
Opens the device.
:param baudrate: baudrate to use with the device
:type baudrate: int
:param no_reader_thread: whether or not to automatically start the
reader thread.
:type no_reader_thread: bool
:raises: :py:class:`~alarmdecoder.util.NoDeviceError`
"""
# Set up the defaults
if baudrate is None:
baudrate = SerialDevice.BAUDRATE
if self._port is None:
raise NoDeviceError('No device interface specified.')
self._read_thread = Device.ReadThread(self)
# Open the device and start up the reader thread.
try:
self._device.port = self._port
self._device.open()
# NOTE: Setting the baudrate before opening the
# port caused issues with Moschip 7840/7820
# USB Serial Driver converter. (mos7840)
#
# Moving it to this point seems to resolve
# all issues with it.
self._device.baudrate = baudrate
except (serial.SerialException, ValueError, OSError) as err:
raise NoDeviceError('Error opening device on {0}.'.format(self._port), err)
else:
self._running = True
self.on_open()
if not no_reader_thread:
self._read_thread.start()
return self
def close(self):
"""
Closes the device.
"""
try:
Device.close(self)
except Exception:
pass
def fileno(self):
"""
Returns the file number associated with the device
:returns: int
"""
return self._device.fileno()
def write(self, data):
"""
Writes data to the device.
:param data: data to write
:type data: string
:raises: py:class:`~alarmdecoder.util.CommError`
"""
try:
# Hack to support unicode under Python 2.x
if isinstance(data, str) or (sys.version_info < (3,) and isinstance(data, unicode)):
data = data.encode('utf-8')
self._device.write(data)
except serial.SerialTimeoutException:
pass
except serial.SerialException as err:
raise CommError('Error writing to device.', err)
else:
self.on_write(data=data)
def read(self):
"""
Reads a single character from the device.
:returns: character read from the device
:raises: :py:class:`~alarmdecoder.util.CommError`
"""
data = ''
try:
read_ready, _, _ = select.select([self._device.fileno()], [], [], 0.5)
if len(read_ready) != 0:
data = self._device.read(1)
except serial.SerialException as err:
raise CommError('Error reading from device: {0}'.format(str(err)), err)
return data.decode('utf-8')
def read_line(self, timeout=0.0, purge_buffer=False):
"""
Reads a line from the device.
:param timeout: read timeout
:type timeout: float
:param purge_buffer: Indicates whether to purge the buffer prior to
reading.
:type purge_buffer: bool
:returns: line that was read
:raises: :py:class:`~alarmdecoder.util.CommError`, :py:class:`~alarmdecoder.util.TimeoutError`
"""
def timeout_event():
"""Handles read timeout event"""
timeout_event.reading = False
timeout_event.reading = True
if purge_buffer:
self._buffer = b''
got_line, data = False, ''
timer = threading.Timer(timeout, timeout_event)
if timeout > 0:
timer.start()
leftovers = b''
try:
while timeout_event.reading and not got_line:
read_ready, _, _ = select.select([self._device.fileno()], [], [], 0.5)
if len(read_ready) == 0:
continue
bytes_avail = 0
if hasattr(self._device, "in_waiting"):
bytes_avail = self._device.in_waiting
else:
bytes_avail = self._device.inWaiting()
buf = self._device.read(bytes_avail)
for idx in range(len(buf)):
c = buf[idx]
ub = bytes_hack(c)
if sys.version_info > (3,):
ub = bytes([ub])
# NOTE: AD2SERIAL and AD2PI apparently sends down \xFF on boot.
if ub != b'' and ub != b"\xff":
self._buffer += ub
if ub == b"\n":
self._buffer = self._buffer.strip(b"\r\n")
if len(self._buffer) > 0:
got_line = True
leftovers = buf[idx:]
break
except (OSError, serial.SerialException) as err:
raise CommError('Error reading from device: {0}'.format(str(err)), err)
else:
if got_line:
data, self._buffer = self._buffer, leftovers
self.on_read(data=data)
else:
raise TimeoutError('Timeout while waiting for line terminator.')
finally:
timer.cancel()
return data.decode('utf-8')
def purge(self):
"""
Purges read/write buffers.
"""
self._device.flushInput()
self._device.flushOutput()
class SocketDevice(Device):
"""
Device that supports communication with an `AlarmDecoder`_ (AD2) that is
exposed via `ser2sock`_ or another Serial to IP interface.
"""
@property
def interface(self):
"""
Retrieves the interface used to connect to the device.
:returns: interface used to connect to the device
"""
return (self._host, self._port)
@interface.setter
def interface(self, value):
"""
Sets the interface used to connect to the device.
:param value: Tuple containing the host and port to use
:type value: tuple
"""
self._host, self._port = value
@property
def ssl(self):
"""
Retrieves whether or not the device is using SSL.
:returns: whether or not the device is using SSL
"""
return self._use_ssl
@ssl.setter
def ssl(self, value):
"""
Sets whether or not SSL communication is in use.
:param value: Whether or not SSL communication is in use
:type value: bool
"""
self._use_ssl = value
@property
def ssl_certificate(self):
"""
Retrieves the SSL client certificate path used for authentication.
:returns: path to the certificate path or :py:class:`OpenSSL.crypto.X509`
"""
return self._ssl_certificate
@ssl_certificate.setter
def ssl_certificate(self, value):
"""
Sets the SSL client certificate to use for authentication.
:param value: path to the SSL certificate or :py:class:`OpenSSL.crypto.X509`
:type value: string or :py:class:`OpenSSL.crypto.X509`
"""
self._ssl_certificate = value
@property
def ssl_key(self):
"""