Repository navigation
Expand file tree
/
Copy pathtest_socket.py
More file actions
6441 lines (5378 loc) · 239 KB
/
Copy pathtest_socket.py
File metadata and controls
6441 lines (5378 loc) · 239 KB
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
import unittest
from test import support
import errno
import io
import itertools
import socket
import select
import tempfile
import time
import traceback
import queue
import sys
import os
import platform
import array
import contextlib
from weakref import proxy
import signal
import math
import pickle
import struct
import random
import shutil
import string
import _thread as thread
import threading
try:
import multiprocessing
except ImportError:
multiprocessing = False
try:
import fcntl
except ImportError:
fcntl = None
HOST = support.HOST
# test unicode string and carriage return
MSG = 'Michael Gilfix was here\u1234\r\n'.encode('utf-8')
MAIN_TIMEOUT = 60.0
VSOCKPORT = 1234
AIX = platform.system() == "AIX"
try:
import _socket
except ImportError:
_socket = None
def get_cid():
if fcntl is None:
return None
try:
with open("/dev/vsock", "rb") as f:
r = fcntl.ioctl(f, socket.IOCTL_VM_SOCKETS_GET_LOCAL_CID, " ")
except OSError:
return None
else:
return struct.unpack("I", r)[0]
def _have_socket_can():
"""Check whether CAN sockets are supported on this host."""
try:
s = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
except (AttributeError, OSError):
return False
else:
s.close()
return True
def _have_socket_can_isotp():
"""Check whether CAN ISOTP sockets are supported on this host."""
try:
s = socket.socket(socket.PF_CAN, socket.SOCK_DGRAM, socket.CAN_ISOTP)
except (AttributeError, OSError):
return False
else:
s.close()
return True
def _have_socket_rds():
"""Check whether RDS sockets are supported on this host."""
try:
s = socket.socket(socket.PF_RDS, socket.SOCK_SEQPACKET, 0)
except (AttributeError, OSError):
return False
else:
s.close()
return True
def _have_socket_alg():
"""Check whether AF_ALG sockets are supported on this host."""
try:
s = socket.socket(socket.AF_ALG, socket.SOCK_SEQPACKET, 0)
except (AttributeError, OSError):
return False
else:
s.close()
return True
def _have_socket_qipcrtr():
"""Check whether AF_QIPCRTR sockets are supported on this host."""
try:
s = socket.socket(socket.AF_QIPCRTR, socket.SOCK_DGRAM, 0)
except (AttributeError, OSError):
return False
else:
s.close()
return True
def _have_socket_vsock():
"""Check whether AF_VSOCK sockets are supported on this host."""
ret = get_cid() is not None
return ret
@contextlib.contextmanager
def socket_setdefaulttimeout(timeout):
old_timeout = socket.getdefaulttimeout()
try:
socket.setdefaulttimeout(timeout)
yield
finally:
socket.setdefaulttimeout(old_timeout)
HAVE_SOCKET_CAN = _have_socket_can()
HAVE_SOCKET_CAN_ISOTP = _have_socket_can_isotp()
HAVE_SOCKET_RDS = _have_socket_rds()
HAVE_SOCKET_ALG = _have_socket_alg()
HAVE_SOCKET_QIPCRTR = _have_socket_qipcrtr()
HAVE_SOCKET_VSOCK = _have_socket_vsock()
HAVE_SOCKET_UDPLITE = hasattr(socket, "IPPROTO_UDPLITE")
# Size in bytes of the int type
SIZEOF_INT = array.array("i").itemsize
class SocketTCPTest(unittest.TestCase):
def setUp(self):
self.serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.port = support.bind_port(self.serv)
self.serv.listen()
def tearDown(self):
self.serv.close()
self.serv = None
class SocketUDPTest(unittest.TestCase):
def setUp(self):
self.serv = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.port = support.bind_port(self.serv)
def tearDown(self):
self.serv.close()
self.serv = None
class SocketUDPLITETest(SocketUDPTest):
def setUp(self):
self.serv = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
self.port = support.bind_port(self.serv)
class ThreadSafeCleanupTestCase(unittest.TestCase):
"""Subclass of unittest.TestCase with thread-safe cleanup methods.
This subclass protects the addCleanup() and doCleanups() methods
with a recursive lock.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self._cleanup_lock = threading.RLock()
def addCleanup(self, *args, **kwargs):
with self._cleanup_lock:
return super().addCleanup(*args, **kwargs)
def doCleanups(self, *args, **kwargs):
with self._cleanup_lock:
return super().doCleanups(*args, **kwargs)
class SocketCANTest(unittest.TestCase):
"""To be able to run this test, a `vcan0` CAN interface can be created with
the following commands:
# modprobe vcan
# ip link add dev vcan0 type vcan
# ifconfig vcan0 up
"""
interface = 'vcan0'
bufsize = 128
"""The CAN frame structure is defined in <linux/can.h>:
struct can_frame {
canid_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
__u8 can_dlc; /* data length code: 0 .. 8 */
__u8 data[8] __attribute__((aligned(8)));
};
"""
can_frame_fmt = "=IB3x8s"
can_frame_size = struct.calcsize(can_frame_fmt)
"""The Broadcast Management Command frame structure is defined
in <linux/can/bcm.h>:
struct bcm_msg_head {
__u32 opcode;
__u32 flags;
__u32 count;
struct timeval ival1, ival2;
canid_t can_id;
__u32 nframes;
struct can_frame frames[0];
}
`bcm_msg_head` must be 8 bytes aligned because of the `frames` member (see
`struct can_frame` definition). Must use native not standard types for packing.
"""
bcm_cmd_msg_fmt = "@3I4l2I"
bcm_cmd_msg_fmt += "x" * (struct.calcsize(bcm_cmd_msg_fmt) % 8)
def setUp(self):
self.s = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
self.addCleanup(self.s.close)
try:
self.s.bind((self.interface,))
except OSError:
self.skipTest('network interface `%s` does not exist' %
self.interface)
class SocketRDSTest(unittest.TestCase):
"""To be able to run this test, the `rds` kernel module must be loaded:
# modprobe rds
"""
bufsize = 8192
def setUp(self):
self.serv = socket.socket(socket.PF_RDS, socket.SOCK_SEQPACKET, 0)
self.addCleanup(self.serv.close)
try:
self.port = support.bind_port(self.serv)
except OSError:
self.skipTest('unable to bind RDS socket')
class ThreadableTest:
"""Threadable Test class
The ThreadableTest class makes it easy to create a threaded
client/server pair from an existing unit test. To create a
new threaded class from an existing unit test, use multiple
inheritance:
class NewClass (OldClass, ThreadableTest):
pass
This class defines two new fixture functions with obvious
purposes for overriding:
clientSetUp ()
clientTearDown ()
Any new test functions within the class must then define
tests in pairs, where the test name is preceded with a
'_' to indicate the client portion of the test. Ex:
def testFoo(self):
# Server portion
def _testFoo(self):
# Client portion
Any exceptions raised by the clients during their tests
are caught and transferred to the main thread to alert
the testing framework.
Note, the server setup function cannot call any blocking
functions that rely on the client thread during setup,
unless serverExplicitReady() is called just before
the blocking call (such as in setting up a client/server
connection and performing the accept() in setUp().
"""
def __init__(self):
# Swap the true setup function
self.__setUp = self.setUp
self.__tearDown = self.tearDown
self.setUp = self._setUp
self.tearDown = self._tearDown
def serverExplicitReady(self):
"""This method allows the server to explicitly indicate that
it wants the client thread to proceed. This is useful if the
server is about to execute a blocking routine that is
dependent upon the client thread during its setup routine."""
self.server_ready.set()
def _setUp(self):
self.wait_threads = support.wait_threads_exit()
self.wait_threads.__enter__()
self.server_ready = threading.Event()
self.client_ready = threading.Event()
self.done = threading.Event()
self.queue = queue.Queue(1)
self.server_crashed = False
# Do some munging to start the client test.
methodname = self.id()
i = methodname.rfind('.')
methodname = methodname[i+1:]
test_method = getattr(self, '_' + methodname)
self.client_thread = thread.start_new_thread(
self.clientRun, (test_method,))
try:
self.__setUp()
except:
self.server_crashed = True
raise
finally:
self.server_ready.set()
self.client_ready.wait()
def _tearDown(self):
self.__tearDown()
self.done.wait()
self.wait_threads.__exit__(None, None, None)
if self.queue.qsize():
exc = self.queue.get()
raise exc
def clientRun(self, test_func):
self.server_ready.wait()
try:
self.clientSetUp()
except BaseException as e:
self.queue.put(e)
self.clientTearDown()
return
finally:
self.client_ready.set()
if self.server_crashed:
self.clientTearDown()
return
if not hasattr(test_func, '__call__'):
raise TypeError("test_func must be a callable function")
try:
test_func()
except BaseException as e:
self.queue.put(e)
finally:
self.clientTearDown()
def clientSetUp(self):
raise NotImplementedError("clientSetUp must be implemented.")
def clientTearDown(self):
self.done.set()
thread.exit()
class ThreadedTCPSocketTest(SocketTCPTest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketTCPTest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
class ThreadedUDPSocketTest(SocketUDPTest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketUDPTest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
@unittest.skipUnless(HAVE_SOCKET_UDPLITE,
'UDPLITE sockets required for this test.')
class ThreadedUDPLITESocketTest(SocketUDPLITETest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketUDPLITETest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
class ThreadedCANSocketTest(SocketCANTest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketCANTest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.PF_CAN, socket.SOCK_RAW, socket.CAN_RAW)
try:
self.cli.bind((self.interface,))
except OSError:
# skipTest should not be called here, and will be called in the
# server instead
pass
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
class ThreadedRDSSocketTest(SocketRDSTest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketRDSTest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.PF_RDS, socket.SOCK_SEQPACKET, 0)
try:
# RDS sockets must be bound explicitly to send or receive data
self.cli.bind((HOST, 0))
self.cli_addr = self.cli.getsockname()
except OSError:
# skipTest should not be called here, and will be called in the
# server instead
pass
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
@unittest.skipIf(fcntl is None, "need fcntl")
@unittest.skipUnless(HAVE_SOCKET_VSOCK,
'VSOCK sockets required for this test.')
@unittest.skipUnless(get_cid() != 2,
"This test can only be run on a virtual guest.")
class ThreadedVSOCKSocketStreamTest(unittest.TestCase, ThreadableTest):
def __init__(self, methodName='runTest'):
unittest.TestCase.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def setUp(self):
self.serv = socket.socket(socket.AF_VSOCK, socket.SOCK_STREAM)
self.addCleanup(self.serv.close)
self.serv.bind((socket.VMADDR_CID_ANY, VSOCKPORT))
self.serv.listen()
self.serverExplicitReady()
self.conn, self.connaddr = self.serv.accept()
self.addCleanup(self.conn.close)
def clientSetUp(self):
time.sleep(0.1)
self.cli = socket.socket(socket.AF_VSOCK, socket.SOCK_STREAM)
self.addCleanup(self.cli.close)
cid = get_cid()
self.cli.connect((cid, VSOCKPORT))
def testStream(self):
msg = self.conn.recv(1024)
self.assertEqual(msg, MSG)
def _testStream(self):
self.cli.send(MSG)
self.cli.close()
class SocketConnectedTest(ThreadedTCPSocketTest):
"""Socket tests for client-server connection.
self.cli_conn is a client socket connected to the server. The
setUp() method guarantees that it is connected to the server.
"""
def __init__(self, methodName='runTest'):
ThreadedTCPSocketTest.__init__(self, methodName=methodName)
def setUp(self):
ThreadedTCPSocketTest.setUp(self)
# Indicate explicitly we're ready for the client thread to
# proceed and then perform the blocking call to accept
self.serverExplicitReady()
conn, addr = self.serv.accept()
self.cli_conn = conn
def tearDown(self):
self.cli_conn.close()
self.cli_conn = None
ThreadedTCPSocketTest.tearDown(self)
def clientSetUp(self):
ThreadedTCPSocketTest.clientSetUp(self)
self.cli.connect((HOST, self.port))
self.serv_conn = self.cli
def clientTearDown(self):
self.serv_conn.close()
self.serv_conn = None
ThreadedTCPSocketTest.clientTearDown(self)
class SocketPairTest(unittest.TestCase, ThreadableTest):
def __init__(self, methodName='runTest'):
unittest.TestCase.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def setUp(self):
self.serv, self.cli = socket.socketpair()
def tearDown(self):
self.serv.close()
self.serv = None
def clientSetUp(self):
pass
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
# The following classes are used by the sendmsg()/recvmsg() tests.
# Combining, for instance, ConnectedStreamTestMixin and TCPTestBase
# gives a drop-in replacement for SocketConnectedTest, but different
# address families can be used, and the attributes serv_addr and
# cli_addr will be set to the addresses of the endpoints.
class SocketTestBase(unittest.TestCase):
"""A base class for socket tests.
Subclasses must provide methods newSocket() to return a new socket
and bindSock(sock) to bind it to an unused address.
Creates a socket self.serv and sets self.serv_addr to its address.
"""
def setUp(self):
self.serv = self.newSocket()
self.bindServer()
def bindServer(self):
"""Bind server socket and set self.serv_addr to its address."""
self.bindSock(self.serv)
self.serv_addr = self.serv.getsockname()
def tearDown(self):
self.serv.close()
self.serv = None
class SocketListeningTestMixin(SocketTestBase):
"""Mixin to listen on the server socket."""
def setUp(self):
super().setUp()
self.serv.listen()
class ThreadedSocketTestMixin(ThreadSafeCleanupTestCase, SocketTestBase,
ThreadableTest):
"""Mixin to add client socket and allow client/server tests.
Client socket is self.cli and its address is self.cli_addr. See
ThreadableTest for usage information.
"""
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = self.newClientSocket()
self.bindClient()
def newClientSocket(self):
"""Return a new socket for use as client."""
return self.newSocket()
def bindClient(self):
"""Bind client socket and set self.cli_addr to its address."""
self.bindSock(self.cli)
self.cli_addr = self.cli.getsockname()
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
class ConnectedStreamTestMixin(SocketListeningTestMixin,
ThreadedSocketTestMixin):
"""Mixin to allow client/server stream tests with connected client.
Server's socket representing connection to client is self.cli_conn
and client's connection to server is self.serv_conn. (Based on
SocketConnectedTest.)
"""
def setUp(self):
super().setUp()
# Indicate explicitly we're ready for the client thread to
# proceed and then perform the blocking call to accept
self.serverExplicitReady()
conn, addr = self.serv.accept()
self.cli_conn = conn
def tearDown(self):
self.cli_conn.close()
self.cli_conn = None
super().tearDown()
def clientSetUp(self):
super().clientSetUp()
self.cli.connect(self.serv_addr)
self.serv_conn = self.cli
def clientTearDown(self):
try:
self.serv_conn.close()
self.serv_conn = None
except AttributeError:
pass
super().clientTearDown()
class UnixSocketTestBase(SocketTestBase):
"""Base class for Unix-domain socket tests."""
# This class is used for file descriptor passing tests, so we
# create the sockets in a private directory so that other users
# can't send anything that might be problematic for a privileged
# user running the tests.
def setUp(self):
self.dir_path = tempfile.mkdtemp()
self.addCleanup(os.rmdir, self.dir_path)
super().setUp()
def bindSock(self, sock):
path = tempfile.mktemp(dir=self.dir_path)
support.bind_unix_socket(sock, path)
self.addCleanup(support.unlink, path)
class UnixStreamBase(UnixSocketTestBase):
"""Base class for Unix-domain SOCK_STREAM tests."""
def newSocket(self):
return socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
class InetTestBase(SocketTestBase):
"""Base class for IPv4 socket tests."""
host = HOST
def setUp(self):
super().setUp()
self.port = self.serv_addr[1]
def bindSock(self, sock):
support.bind_port(sock, host=self.host)
class TCPTestBase(InetTestBase):
"""Base class for TCP-over-IPv4 tests."""
def newSocket(self):
return socket.socket(socket.AF_INET, socket.SOCK_STREAM)
class UDPTestBase(InetTestBase):
"""Base class for UDP-over-IPv4 tests."""
def newSocket(self):
return socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
class UDPLITETestBase(InetTestBase):
"""Base class for UDPLITE-over-IPv4 tests."""
def newSocket(self):
return socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
class SCTPStreamBase(InetTestBase):
"""Base class for SCTP tests in one-to-one (SOCK_STREAM) mode."""
def newSocket(self):
return socket.socket(socket.AF_INET, socket.SOCK_STREAM,
socket.IPPROTO_SCTP)
class Inet6TestBase(InetTestBase):
"""Base class for IPv6 socket tests."""
host = support.HOSTv6
class UDP6TestBase(Inet6TestBase):
"""Base class for UDP-over-IPv6 tests."""
def newSocket(self):
return socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
class UDPLITE6TestBase(Inet6TestBase):
"""Base class for UDPLITE-over-IPv6 tests."""
def newSocket(self):
return socket.socket(socket.AF_INET6, socket.SOCK_DGRAM, socket.IPPROTO_UDPLITE)
# Test-skipping decorators for use with ThreadableTest.
def skipWithClientIf(condition, reason):
"""Skip decorated test if condition is true, add client_skip decorator.
If the decorated object is not a class, sets its attribute
"client_skip" to a decorator which will return an empty function
if the test is to be skipped, or the original function if it is
not. This can be used to avoid running the client part of a
skipped test when using ThreadableTest.
"""
def client_pass(*args, **kwargs):
pass
def skipdec(obj):
retval = unittest.skip(reason)(obj)
if not isinstance(obj, type):
retval.client_skip = lambda f: client_pass
return retval
def noskipdec(obj):
if not (isinstance(obj, type) or hasattr(obj, "client_skip")):
obj.client_skip = lambda f: f
return obj
return skipdec if condition else noskipdec
def requireAttrs(obj, *attributes):
"""Skip decorated test if obj is missing any of the given attributes.
Sets client_skip attribute as skipWithClientIf() does.
"""
missing = [name for name in attributes if not hasattr(obj, name)]
return skipWithClientIf(
missing, "don't have " + ", ".join(name for name in missing))
def requireSocket(*args):
"""Skip decorated test if a socket cannot be created with given arguments.
When an argument is given as a string, will use the value of that
attribute of the socket module, or skip the test if it doesn't
exist. Sets client_skip attribute as skipWithClientIf() does.
"""
err = None
missing = [obj for obj in args if
isinstance(obj, str) and not hasattr(socket, obj)]
if missing:
err = "don't have " + ", ".join(name for name in missing)
else:
callargs = [getattr(socket, obj) if isinstance(obj, str) else obj
for obj in args]
try:
s = socket.socket(*callargs)
except OSError as e:
# XXX: check errno?
err = str(e)
else:
s.close()
return skipWithClientIf(
err is not None,
"can't create socket({0}): {1}".format(
", ".join(str(o) for o in args), err))
#######################################################################
## Begin Tests
class GeneralModuleTests(unittest.TestCase):
def test_SocketType_is_socketobject(self):
import _socket
self.assertTrue(socket.SocketType is _socket.socket)
s = socket.socket()
self.assertIsInstance(s, socket.SocketType)
s.close()
def test_repr(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
with s:
self.assertIn('fd=%i' % s.fileno(), repr(s))
self.assertIn('family=%s' % socket.AF_INET, repr(s))
self.assertIn('type=%s' % socket.SOCK_STREAM, repr(s))
self.assertIn('proto=0', repr(s))
self.assertNotIn('raddr', repr(s))
s.bind(('127.0.0.1', 0))
self.assertIn('laddr', repr(s))
self.assertIn(str(s.getsockname()), repr(s))
self.assertIn('[closed]', repr(s))
self.assertNotIn('laddr', repr(s))
@unittest.skipUnless(_socket is not None, 'need _socket module')
def test_csocket_repr(self):
s = _socket.socket(_socket.AF_INET, _socket.SOCK_STREAM)
try:
expected = ('<socket object, fd=%s, family=%s, type=%s, proto=%s>'
% (s.fileno(), s.family, s.type, s.proto))
self.assertEqual(repr(s), expected)
finally:
s.close()
expected = ('<socket object, fd=-1, family=%s, type=%s, proto=%s>'
% (s.family, s.type, s.proto))
self.assertEqual(repr(s), expected)
def test_weakref(self):
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
p = proxy(s)
self.assertEqual(p.fileno(), s.fileno())
s = None
try:
p.fileno()
except ReferenceError:
pass
else:
self.fail('Socket proxy still exists')
def testSocketError(self):
# Testing socket module exceptions
msg = "Error raising socket exception (%s)."
with self.assertRaises(OSError, msg=msg % 'OSError'):
raise OSError
with self.assertRaises(OSError, msg=msg % 'socket.herror'):
raise socket.herror
with self.assertRaises(OSError, msg=msg % 'socket.gaierror'):
raise socket.gaierror
def testSendtoErrors(self):
# Testing that sendto doesn't mask failures. See #10169.
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.addCleanup(s.close)
s.bind(('', 0))
sockname = s.getsockname()
# 2 args
with self.assertRaises(TypeError) as cm:
s.sendto('\u2620', sockname)
self.assertEqual(str(cm.exception),
"a bytes-like object is required, not 'str'")
with self.assertRaises(TypeError) as cm:
s.sendto(5j, sockname)
self.assertEqual(str(cm.exception),
"a bytes-like object is required, not 'complex'")
with self.assertRaises(TypeError) as cm:
s.sendto(b'foo', None)
self.assertIn('not NoneType',str(cm.exception))
# 3 args
with self.assertRaises(TypeError) as cm:
s.sendto('\u2620', 0, sockname)
self.assertEqual(str(cm.exception),
"a bytes-like object is required, not 'str'")
with self.assertRaises(TypeError) as cm:
s.sendto(5j, 0, sockname)
self.assertEqual(str(cm.exception),
"a bytes-like object is required, not 'complex'")
with self.assertRaises(TypeError) as cm:
s.sendto(b'foo', 0, None)
self.assertIn('not NoneType', str(cm.exception))
with self.assertRaises(TypeError) as cm:
s.sendto(b'foo', 'bar', sockname)
self.assertIn('an integer is required', str(cm.exception))
with self.assertRaises(TypeError) as cm:
s.sendto(b'foo', None, None)
self.assertIn('an integer is required', str(cm.exception))
# wrong number of args
with self.assertRaises(TypeError) as cm:
s.sendto(b'foo')
self.assertIn('(1 given)', str(cm.exception))
with self.assertRaises(TypeError) as cm:
s.sendto(b'foo', 0, sockname, 4)
self.assertIn('(4 given)', str(cm.exception))
def testCrucialConstants(self):
# Testing for mission critical constants
socket.AF_INET
if socket.has_ipv6:
socket.AF_INET6
socket.SOCK_STREAM
socket.SOCK_DGRAM
socket.SOCK_RAW
socket.SOCK_RDM
socket.SOCK_SEQPACKET
socket.SOL_SOCKET
socket.SO_REUSEADDR
def testCrucialIpProtoConstants(self):
socket.IPPROTO_TCP
socket.IPPROTO_UDP
if socket.has_ipv6:
socket.IPPROTO_IPV6
@unittest.skipUnless(os.name == "nt", "Windows specific")
def testWindowsSpecificConstants(self):
socket.IPPROTO_ICLFXBM
socket.IPPROTO_ST
socket.IPPROTO_CBT
socket.IPPROTO_IGP
socket.IPPROTO_RDP
socket.IPPROTO_PGM
socket.IPPROTO_L2TP
socket.IPPROTO_SCTP
def testHostnameRes(self):
# Testing hostname resolution mechanisms
hostname = socket.gethostname()
try:
ip = socket.gethostbyname(hostname)
except OSError:
# Probably name lookup wasn't set up right; skip this test
self.skipTest('name lookup failure')
self.assertTrue(ip.find('.') >= 0, "Error resolving host to ip.")
try:
hname, aliases, ipaddrs = socket.gethostbyaddr(ip)
except OSError:
# Probably a similar problem as above; skip this test
self.skipTest('name lookup failure')
all_host_names = [hostname, hname] + aliases
fqhn = socket.getfqdn(ip)
if not fqhn in all_host_names:
self.fail("Error testing host resolution mechanisms. (fqdn: %s, all: %s)" % (fqhn, repr(all_host_names)))
def test_host_resolution(self):
for addr in [support.HOSTv4, '10.0.0.1', '255.255.255.255']:
self.assertEqual(socket.gethostbyname(addr), addr)
# we don't test support.HOSTv6 because there's a chance it doesn't have
# a matching name entry (e.g. 'ip6-localhost')
for host in [support.HOSTv4]:
self.assertIn(host, socket.gethostbyaddr(host)[2])
def test_host_resolution_bad_address(self):
# These are all malformed IP addresses and expected not to resolve to
# any result. But some ISPs, e.g. AWS, may successfully resolve these
# IPs.
explanation = (
"resolving an invalid IP address did not raise OSError; "
"can be caused by a broken DNS server"
)
for addr in ['0.1.1.~1', '1+.1.1.1', '::1q', '::1::2',
'1:1:1:1:1:1:1:1:1']:
with self.assertRaises(OSError, msg=addr):
socket.gethostbyname(addr)
with self.assertRaises(OSError, msg=explanation):
socket.gethostbyaddr(addr)
@unittest.skipUnless(hasattr(socket, 'sethostname'), "test needs socket.sethostname()")
@unittest.skipUnless(hasattr(socket, 'gethostname'), "test needs socket.gethostname()")
def test_sethostname(self):
oldhn = socket.gethostname()
try:
socket.sethostname('new')
except OSError as e:
if e.errno == errno.EPERM:
self.skipTest("test should be run as root")
else:
raise
try:
# running test as root!
self.assertEqual(socket.gethostname(), 'new')
# Should work with bytes objects too
socket.sethostname(b'bar')
self.assertEqual(socket.gethostname(), 'bar')
finally:
socket.sethostname(oldhn)
@unittest.skipUnless(hasattr(socket, 'if_nameindex'),
'socket.if_nameindex() not available.')
def testInterfaceNameIndex(self):
interfaces = socket.if_nameindex()
for index, name in interfaces: