Source

gevent / greentest / test_ssl.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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
# Test the support for SSL and sockets
from gevent import monkey; monkey.patch_all(aggressive=True)

import sys
import unittest
import test_support
import asyncore
import socket
import select
import time
import os
import pprint
import urllib, urlparse
import traceback

from BaseHTTPServer import HTTPServer
from SimpleHTTPServer import SimpleHTTPRequestHandler

# Optionally test SSL support, if we have it in the tested platform
skip_expected = False
try:
    from gevent import ssl
except ImportError:
    skip_expected = True

HOST = 'localhost'
CERTFILE = None
SVN_PYTHON_ORG_ROOT_CERT = None

def handle_error(prefix):
    exc_format = ' '.join(traceback.format_exception(*sys.exc_info()))
    if test_support.verbose:
        sys.stdout.write(prefix + exc_format)

    def testSimpleSSLwrap(self):
        try:
            ssl.sslwrap_simple(socket.socket(socket.AF_INET))
        except IOError, e:
            if e.errno == 32: # broken pipe when ssl_sock.do_handshake(), this test doesn't care about that
                pass
            else:
                raise
        try:
            ssl.sslwrap_simple(socket.socket(socket.AF_INET)._sock)
        except IOError, e:
            if e.errno == 32: # broken pipe when ssl_sock.do_handshake(), this test doesn't care about that
                pass
            else:
                raise

class BasicTests(unittest.TestCase):

    def testSSLconnect(self):
        if not test_support.is_resource_enabled('network'):
            return
        s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                            cert_reqs=ssl.CERT_NONE)
        s.connect(("svn.python.org", 443))
        c = s.getpeercert()
        if c:
            raise test_support.TestFailed("Peer cert %s shouldn't be here!")
        s.close()

        # this should fail because we have no verification certs
        s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                            cert_reqs=ssl.CERT_REQUIRED)
        try:
            try:
                s.connect(("svn.python.org", 443))
            except ssl.SSLError:
                pass
        finally:
            s.close()

    def testCrucialConstants(self):
        ssl.PROTOCOL_SSLv2
        ssl.PROTOCOL_SSLv23
        ssl.PROTOCOL_SSLv3
        ssl.PROTOCOL_TLSv1
        ssl.CERT_NONE
        ssl.CERT_OPTIONAL
        ssl.CERT_REQUIRED

    def testRAND(self):
        v = ssl.RAND_status()
        if test_support.verbose:
            sys.stdout.write("\n RAND_status is %d (%s)\n"
                             % (v, (v and "sufficient randomness") or
                                "insufficient randomness"))
        try:
            ssl.RAND_egd(1)
        except TypeError:
            pass
        else:
            print "didn't raise TypeError"
        ssl.RAND_add("this is a random string", 75.0)

    def testParseCert(self):
        # note that this uses an 'unofficial' function in _ssl.c,
        # provided solely for this test, to exercise the certificate
        # parsing code
        p = ssl._ssl._test_decode_cert(CERTFILE, False)
        if test_support.verbose:
            sys.stdout.write("\n" + pprint.pformat(p) + "\n")

    def testDERtoPEM(self):

        pem = open(SVN_PYTHON_ORG_ROOT_CERT, 'r').read()
        d1 = ssl.PEM_cert_to_DER_cert(pem)
        p2 = ssl.DER_cert_to_PEM_cert(d1)
        d2 = ssl.PEM_cert_to_DER_cert(p2)
        if (d1 != d2):
            raise test_support.TestFailed("PEM-to-DER or DER-to-PEM translation failed")

class NetworkedTests(unittest.TestCase):

    def testConnect(self):
        s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                            cert_reqs=ssl.CERT_NONE)
        s.connect(("svn.python.org", 443))
        c = s.getpeercert()
        if c:
            raise test_support.TestFailed("Peer cert %s shouldn't be here!")
        s.close()

        # this should fail because we have no verification certs
        s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                            cert_reqs=ssl.CERT_REQUIRED)
        try:
            try:
                s.connect(("svn.python.org", 443))
            except ssl.SSLError:
                pass
        finally:
            s.close()

        # this should succeed because we specify the root cert
        s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                            cert_reqs=ssl.CERT_REQUIRED,
                            ca_certs=SVN_PYTHON_ORG_ROOT_CERT)
        try:
            try:
                s.connect(("svn.python.org", 443))
            except ssl.SSLError, x:
                raise test_support.TestFailed("Unexpected exception %s" % x)
        finally:
            s.close()


    def testNonBlockingHandshake(self):
        s = socket.socket(socket.AF_INET)
        s.connect(("svn.python.org", 443))
        s.setblocking(False)
        s = ssl.wrap_socket(s,
                            cert_reqs=ssl.CERT_NONE,
                            do_handshake_on_connect=False)
        count = 0
        while True:
            try:
                count += 1
                s.do_handshake()
                break
            except ssl.SSLError, err:
                if err.args[0] == ssl.SSL_ERROR_WANT_READ:
                    select.select([s], [], [])
                elif err.args[0] == ssl.SSL_ERROR_WANT_WRITE:
                    select.select([], [s], [])
                else:
                    raise
        s.close()
        if test_support.verbose:
            sys.stdout.write("\nNeeded %d calls to do_handshake() to establish session.\n" % count)

    def testFetchServerCert(self):

        pem = ssl.get_server_certificate(("svn.python.org", 443))
        if not pem:
            raise test_support.TestFailed("No server certificate on svn.python.org:443!")

        try:
            pem = ssl.get_server_certificate(("svn.python.org", 443), ca_certs=CERTFILE)
        except ssl.SSLError:
            #should fail
            pass
        else:
            raise test_support.TestFailed("Got server certificate %s for svn.python.org!" % pem)

        pem = ssl.get_server_certificate(("svn.python.org", 443), ca_certs=SVN_PYTHON_ORG_ROOT_CERT)
        if not pem:
            raise test_support.TestFailed("No server certificate on svn.python.org:443!")
        if test_support.verbose:
            sys.stdout.write("\nVerified certificate for svn.python.org:443 is\n%s\n" % pem)


try:
    import threading
except ImportError:
    _have_threads = False
else:

    _have_threads = True

    class ThreadedEchoServer(threading.Thread):

        class ConnectionHandler(threading.Thread):

            """A mildly complicated class, because we want it to work both
            with and without the SSL wrapper around the socket connection, so
            that we can test the STARTTLS functionality."""

            def __init__(self, server, connsock):
                self.server = server
                self.running = False
                self.sock = connsock
                self.sock.setblocking(1)
                self.sslconn = None
                threading.Thread.__init__(self)
                self.setDaemon(True)

            def show_conn_details(self):
                if self.server.certreqs == ssl.CERT_REQUIRED:
                    cert = self.sslconn.getpeercert()
                    if test_support.verbose and self.server.chatty:
                        sys.stdout.write(" client cert is " + pprint.pformat(cert) + "\n")
                    cert_binary = self.sslconn.getpeercert(True)
                    if test_support.verbose and self.server.chatty:
                        sys.stdout.write(" cert binary is " + str(len(cert_binary)) + " bytes\n")
                cipher = self.sslconn.cipher()
                if test_support.verbose and self.server.chatty:
                    sys.stdout.write(" server: connection cipher is now " + str(cipher) + "\n")

            def wrap_conn (self):
                try:
                    self.sslconn = ssl.wrap_socket(self.sock, server_side=True,
                                                   certfile=self.server.certificate,
                                                   ssl_version=self.server.protocol,
                                                   ca_certs=self.server.cacerts,
                                                   cert_reqs=self.server.certreqs)
                except:
                    if self.server.chatty:
                        handle_error("\n server:  bad connection attempt from " +
                                     str(self.sock.getpeername()) + ":\n")
                    self.close()
                    if not self.server.expect_bad_connects:
                        # here, we want to stop the server, because this shouldn't
                        # happen in the context of our test case
                        self.running = False
                        # normally, we'd just stop here, but for the test
                        # harness, we want to stop the server
                        self.server.stop()
                    return False

                else:
                    return True

            def read(self):
                if self.sslconn:
                    return self.sslconn.read()
                else:
                    return self.sock.recv(1024)

            def write(self, bytes):
                if self.sslconn:
                    return self.sslconn.write(bytes)
                else:
                    return self.sock.send(bytes)

            def close(self):
                if self.sslconn:
                    self.sslconn.close()
                else:
                    self.sock._sock.close()

            def run (self):
                self.running = True
                if not self.server.starttls_server:
                    if isinstance(self.sock, ssl.SSLSocket):
                        self.sslconn = self.sock
                    elif not self.wrap_conn():
                        return
                    self.show_conn_details()
                while self.running:
                    try:
                        msg = self.read()
                        if not msg:
                            # eof, so quit this handler
                            self.running = False
                            self.close()
                        elif msg.strip() == 'over':
                            if test_support.verbose and self.server.connectionchatty:
                                sys.stdout.write(" server: client closed connection\n")
                            self.close()
                            return
                        elif self.server.starttls_server and msg.strip() == 'STARTTLS':
                            if test_support.verbose and self.server.connectionchatty:
                                sys.stdout.write(" server: read STARTTLS from client, sending OK...\n")
                            self.write("OK\n")
                            if not self.wrap_conn():
                                return
                        elif self.server.starttls_server and self.sslconn and msg.strip() == 'ENDTLS':
                            if test_support.verbose and self.server.connectionchatty:
                                sys.stdout.write(" server: read ENDTLS from client, sending OK...\n")
                            self.write("OK\n")
                            self.sslconn.unwrap()
                            self.sslconn = None
                            if test_support.verbose and self.server.connectionchatty:
                                sys.stdout.write(" server: connection is now unencrypted...\n")
                        else:
                            if (test_support.verbose and
                                self.server.connectionchatty):
                                ctype = (self.sslconn and "encrypted") or "unencrypted"
                                sys.stdout.write(" server: read %s (%s), sending back %s (%s)...\n"
                                                 % (repr(msg), ctype, repr(msg.lower()), ctype))
                            self.write(msg.lower())
                    except ssl.SSLError:
                        if self.server.chatty:
                            handle_error("Test server failure:\n")
                        self.close()
                        self.running = False
                        # normally, we'd just stop here, but for the test
                        # harness, we want to stop the server
                        self.server.stop()
                    except:
                        handle_error('')

        def __init__(self, certificate, ssl_version=None,
                     certreqs=None, cacerts=None, expect_bad_connects=False,
                     chatty=True, connectionchatty=False, starttls_server=False,
                     wrap_accepting_socket=False):

            if ssl_version is None:
                ssl_version = ssl.PROTOCOL_TLSv1
            if certreqs is None:
                certreqs = ssl.CERT_NONE
            self.certificate = certificate
            self.protocol = ssl_version
            self.certreqs = certreqs
            self.cacerts = cacerts
            self.expect_bad_connects = expect_bad_connects
            self.chatty = chatty
            self.connectionchatty = connectionchatty
            self.starttls_server = starttls_server
            self.sock = socket.socket()
            self.flag = None
            if wrap_accepting_socket:
                self.sock = ssl.wrap_socket(self.sock, server_side=True,
                                            certfile=self.certificate,
                                            cert_reqs = self.certreqs,
                                            ca_certs = self.cacerts,
                                            ssl_version = self.protocol)
                if test_support.verbose and self.chatty:
                    sys.stdout.write(' server:  wrapped server socket as %s\n' % str(self.sock))
            self.port = test_support.bind_port(self.sock)
            self.active = False
            threading.Thread.__init__(self)
            self.setDaemon(False)

        def start (self, flag=None):
            self.flag = flag
            threading.Thread.start(self)

        def run (self):
            self.sock.settimeout(0.5)
            self.sock.listen(5)
            self.active = True
            if self.flag:
                # signal an event
                self.flag.set()
            while self.active:
                try:
                    newconn, connaddr = self.sock.accept()
                    if test_support.verbose and self.chatty:
                        sys.stdout.write(' server:  new connection from '
                                         + str(connaddr) + '\n')
                    handler = self.ConnectionHandler(self, newconn)
                    handler.start()
                except socket.timeout:
                    pass
                except KeyboardInterrupt:
                    self.stop()
                except:
                    if self.chatty:
                        handle_error("Test server failure:\n")
            self.sock.close()

        def stop (self):
            self.active = False

    class AsyncoreEchoServer(threading.Thread):

        class EchoServer (asyncore.dispatcher):

            class ConnectionHandler (asyncore.dispatcher_with_send):

                def __init__(self, conn, certfile):
                    asyncore.dispatcher_with_send.__init__(self, conn)
                    self.socket = ssl.wrap_socket(conn, server_side=True,
                                                  certfile=certfile,
                                                  do_handshake_on_connect=True)

                def readable(self):
                    if isinstance(self.socket, ssl.SSLSocket):
                        while self.socket.pending() > 0:
                            self.handle_read_event()
                    return True

                def handle_read(self):
                    data = self.recv(1024)
                    self.send(data.lower())

                def handle_close(self):
                    self.close()
                    if test_support.verbose:
                        sys.stdout.write(" server:  closed connection %s\n" % self.socket)

                def handle_error(self):
                    raise

            def __init__(self, certfile):
                self.certfile = certfile
                asyncore.dispatcher.__init__(self)
                self.create_socket(socket.AF_INET, socket.SOCK_STREAM)
                self.port = test_support.bind_port(self.socket)
                self.listen(5)

            def handle_accept(self):
                sock_obj, addr = self.accept()
                if test_support.verbose:
                    sys.stdout.write(" server:  new connection from %s:%s\n" %addr)
                self.ConnectionHandler(sock_obj, self.certfile)

            def handle_error(self):
                raise

        def __init__(self, certfile):
            self.flag = None
            self.active = False
            self.server = self.EchoServer(certfile)
            self.port = self.server.port
            threading.Thread.__init__(self)
            self.setDaemon(True)

        def __str__(self):
            return "<%s %s>" % (self.__class__.__name__, self.server)

        def start (self, flag=None):
            self.flag = flag
            threading.Thread.start(self)

        def run (self):
            self.active = True
            if self.flag:
                self.flag.set()
            while self.active:
                try:
                    asyncore.loop(1)
                except:
                    pass

        def stop (self):
            self.active = False
            self.server.close()

    class SocketServerHTTPSServer(threading.Thread):

        class HTTPSServer(HTTPServer):

            def __init__(self, server_address, RequestHandlerClass, certfile):

                HTTPServer.__init__(self, server_address, RequestHandlerClass)
                # we assume the certfile contains both private key and certificate
                self.certfile = certfile
                self.active = False
                self.active_lock = threading.Lock()
                self.allow_reuse_address = True

            def __str__(self):
                return ('<%s %s:%s>' %
                        (self.__class__.__name__,
                         self.server_name,
                         self.server_port))

            def get_request (self):
                # override this to wrap socket with SSL
                sock, addr = self.socket.accept()
                sslconn = ssl.wrap_socket(sock, server_side=True,
                                          certfile=self.certfile)
                return sslconn, addr

            # The methods overridden below this are mainly so that we
            # can run it in a thread and be able to stop it from another
            # You probably wouldn't need them in other uses.

            def server_activate(self):
                # We want to run this in a thread for testing purposes,
                # so we override this to set timeout, so that we get
                # a chance to stop the server
                self.socket.settimeout(0.5)
                HTTPServer.server_activate(self)

            def serve_forever(self):
                # We want this to run in a thread, so we use a slightly
                # modified version of "forever".
                self.active = True
                while 1:
                    try:
                        # We need to lock while handling the request.
                        # Another thread can close the socket after self.active
                        # has been checked and before the request is handled.
                        # This causes an exception when using the closed socket.
                        self.active_lock.acquire()
                        try:
                            if not self.active:
                                break
                            self.handle_request()
                        finally:
                            self.active_lock.release()
                    except socket.timeout:
                        pass
                    except KeyboardInterrupt:
                        self.server_close()
                        return
                    except:
                        sys.stdout.write(''.join(traceback.format_exception(*sys.exc_info())))
                        break
                    time.sleep(0.1)

            def server_close(self):
                # Again, we want this to run in a thread, so we need to override
                # close to clear the "active" flag, so that serve_forever() will
                # terminate.
                self.active_lock.acquire()
                try:
                    HTTPServer.server_close(self)
                    self.active = False
                finally:
                    self.active_lock.release()

        class RootedHTTPRequestHandler(SimpleHTTPRequestHandler):

            # need to override translate_path to get a known root,
            # instead of using os.curdir, since the test could be
            # run from anywhere

            server_version = "TestHTTPS/1.0"

            root = None

            def translate_path(self, path):
                """Translate a /-separated PATH to the local filename syntax.

                Components that mean special things to the local file system
                (e.g. drive or directory names) are ignored.  (XXX They should
                probably be diagnosed.)

                """
                # abandon query parameters
                path = urlparse.urlparse(path)[2]
                path = os.path.normpath(urllib.unquote(path))
                words = path.split('/')
                words = filter(None, words)
                path = self.root
                for word in words:
                    drive, word = os.path.splitdrive(word)
                    head, word = os.path.split(word)
                    if word in self.root: continue
                    path = os.path.join(path, word)
                return path

            def log_message(self, format, *args):

                # we override this to suppress logging unless "verbose"

                if test_support.verbose:
                    sys.stdout.write(" server (%s:%d %s):\n   [%s] %s\n" %
                                     (self.server.server_address,
                                      self.server.server_port,
                                      self.request.cipher(),
                                      self.log_date_time_string(),
                                      format%args))


        def __init__(self, certfile):
            self.flag = None
            self.active = False
            self.RootedHTTPRequestHandler.root = os.path.split(CERTFILE)[0]
            self.port = test_support.find_unused_port()
            self.server = self.HTTPSServer(
                (HOST, self.port), self.RootedHTTPRequestHandler, certfile)
            threading.Thread.__init__(self)
            self.setDaemon(True)

        def __str__(self):
            return "<%s %s>" % (self.__class__.__name__, self.server)

        def start (self, flag=None):
            self.flag = flag
            threading.Thread.start(self)

        def run (self):
            self.active = True
            if self.flag:
                self.flag.set()
            self.server.serve_forever()
            self.active = False

        def stop (self):
            self.active = False
            self.server.server_close()


    def badCertTest (certfile):
        server = ThreadedEchoServer(CERTFILE,
                                    certreqs=ssl.CERT_REQUIRED,
                                    cacerts=CERTFILE, chatty=False)
        flag = threading.Event()
        server.start(flag)
        # wait for it to start
        flag.wait()
        # try to connect
        try:
            try:
                s = ssl.wrap_socket(socket.socket(),
                                    certfile=certfile,
                                    ssl_version=ssl.PROTOCOL_TLSv1)
                s.connect((HOST, server.port))
            except ssl.SSLError, x:
                if test_support.verbose:
                    sys.stdout.write("\nSSLError is %s\n" % x[1])
            except socket.error, x:
                if test_support.verbose:
                    sys.stdout.write("\nsocket.error is %s\n" % x[1])
            else:
                raise test_support.TestFailed(
                    "Use of invalid cert should have failed!")
        finally:
            server.stop()
            server.join()

    def serverParamsTest (certfile, protocol, certreqs, cacertsfile,
                          client_certfile, client_protocol=None, indata="FOO\n",
                          chatty=True, connectionchatty=False,
                          wrap_accepting_socket=False):

        server = ThreadedEchoServer(certfile,
                                    certreqs=certreqs,
                                    ssl_version=protocol,
                                    cacerts=cacertsfile,
                                    chatty=chatty,
                                    connectionchatty=connectionchatty,
                                    wrap_accepting_socket=wrap_accepting_socket)
        flag = threading.Event()
        server.start(flag)
        # wait for it to start
        flag.wait()
        # try to connect
        if client_protocol is None:
            client_protocol = protocol
        try:
            try:
                s = ssl.wrap_socket(socket.socket(),
                                    certfile=client_certfile,
                                    ca_certs=cacertsfile,
                                    cert_reqs=certreqs,
                                    ssl_version=client_protocol)
                s.connect((HOST, server.port))
            except ssl.SSLError, x:
                raise test_support.TestFailed("Unexpected SSL error:  " + str(x))
            except Exception, x:
                raise test_support.TestFailed("Unexpected exception:  " + str(x))
            else:
                if connectionchatty:
                    if test_support.verbose:
                        sys.stdout.write(
                            " client:  sending %s...\n" % (repr(indata)))
                s.write(indata)
                outdata = s.read()
                if connectionchatty:
                    if test_support.verbose:
                        sys.stdout.write(" client:  read %s\n" % repr(outdata))
                if outdata != indata.lower():
                    raise test_support.TestFailed(
                        "bad data <<%s>> (%d) received; expected <<%s>> (%d)\n"
                        % (outdata[:min(len(outdata),20)], len(outdata),
                           indata[:min(len(indata),20)].lower(), len(indata)))
                s.write("over\n")
                if connectionchatty:
                    if test_support.verbose:
                        sys.stdout.write(" client:  closing connection.\n")
                s.close()
        finally:
            server.stop()
            server.join()

    def tryProtocolCombo (server_protocol,
                          client_protocol,
                          expectedToWork,
                          certsreqs=None):

        if certsreqs is None:
            certsreqs = ssl.CERT_NONE

        if certsreqs == ssl.CERT_NONE:
            certtype = "CERT_NONE"
        elif certsreqs == ssl.CERT_OPTIONAL:
            certtype = "CERT_OPTIONAL"
        elif certsreqs == ssl.CERT_REQUIRED:
            certtype = "CERT_REQUIRED"
        if test_support.verbose:
            formatstr = (expectedToWork and " %s->%s %s\n") or " {%s->%s} %s\n"
            sys.stdout.write(formatstr %
                             (ssl.get_protocol_name(client_protocol),
                              ssl.get_protocol_name(server_protocol),
                              certtype))
        try:
            serverParamsTest(CERTFILE, server_protocol, certsreqs,
                             CERTFILE, CERTFILE, client_protocol, chatty=False)
        except test_support.TestFailed:
            if expectedToWork:
                raise
        else:
            if not expectedToWork:
                raise test_support.TestFailed(
                    "Client protocol %s succeeded with server protocol %s!"
                    % (ssl.get_protocol_name(client_protocol),
                       ssl.get_protocol_name(server_protocol)))


    class ThreadedTests(unittest.TestCase):

        def testRudeShutdown(self):

            listener_ready = threading.Event()
            listener_gone = threading.Event()
            port = test_support.find_unused_port()

            # `listener` runs in a thread.  It opens a socket listening on
            # PORT, and sits in an accept() until the main thread connects.
            # Then it rudely closes the socket, and sets Event `listener_gone`
            # to let the main thread know the socket is gone.
            def listener():
                s = socket.socket()
                s.bind((HOST, port))
                s.listen(5)
                listener_ready.set()
                s.accept()
                s = None # reclaim the socket object, which also closes it
                listener_gone.set()

            def connector():
                listener_ready.wait()
                s = socket.socket()
                s.connect((HOST, port))
                listener_gone.wait()
                try:
                    ssl_sock = ssl.wrap_socket(s)
                except ssl.SSLError:
                    pass
                else:
                    raise test_support.TestFailed(
                          'connecting to closed SSL socket should have failed')

            t = threading.Thread(target=listener)
            t.start()
            connector()
            t.join()

        def testEcho (self):

            if test_support.verbose:
                sys.stdout.write("\n")
            serverParamsTest(CERTFILE, ssl.PROTOCOL_TLSv1, ssl.CERT_NONE,
                             CERTFILE, CERTFILE, ssl.PROTOCOL_TLSv1,
                             chatty=True, connectionchatty=True)

        def testReadCert(self):

            if test_support.verbose:
                sys.stdout.write("\n")
            s2 = socket.socket()
            server = ThreadedEchoServer(CERTFILE,
                                        certreqs=ssl.CERT_NONE,
                                        ssl_version=ssl.PROTOCOL_SSLv23,
                                        cacerts=CERTFILE,
                                        chatty=False)
            flag = threading.Event()
            server.start(flag)
            # wait for it to start
            flag.wait()
            # try to connect
            try:
                try:
                    s = ssl.wrap_socket(socket.socket(),
                                        certfile=CERTFILE,
                                        ca_certs=CERTFILE,
                                        cert_reqs=ssl.CERT_REQUIRED,
                                        ssl_version=ssl.PROTOCOL_SSLv23)
                    s.connect((HOST, server.port))
                except ssl.SSLError, x:
                    raise test_support.TestFailed(
                        "Unexpected SSL error:  " + str(x))
                except Exception, x:
                    raise test_support.TestFailed(
                        "Unexpected exception:  " + str(x))
                else:
                    if not s:
                        raise test_support.TestFailed(
                            "Can't SSL-handshake with test server")
                    cert = s.getpeercert()
                    if not cert:
                        raise test_support.TestFailed(
                            "Can't get peer certificate.")
                    cipher = s.cipher()
                    if test_support.verbose:
                        sys.stdout.write(pprint.pformat(cert) + '\n')
                        sys.stdout.write("Connection cipher is " + str(cipher) + '.\n')
                    if not cert.has_key('subject'):
                        raise test_support.TestFailed(
                            "No subject field in certificate: %s." %
                            pprint.pformat(cert))
                    if ((('organizationName', 'Python Software Foundation'),)
                        not in cert['subject']):
                        raise test_support.TestFailed(
                            "Missing or invalid 'organizationName' field in certificate subject; "
                            "should be 'Python Software Foundation'.")
                    s.close()
            finally:
                server.stop()
                server.join()

        def testNULLcert(self):
            badCertTest(os.path.join(os.path.dirname(__file__) or os.curdir,
                                     "nullcert.pem"))
        def testMalformedCert(self):
            badCertTest(os.path.join(os.path.dirname(__file__) or os.curdir,
                                     "badcert.pem"))
        def testWrongCert(self):
            badCertTest(os.path.join(os.path.dirname(__file__) or os.curdir,
                                     "wrongcert.pem"))
        def testMalformedKey(self):
            badCertTest(os.path.join(os.path.dirname(__file__) or os.curdir,
                                     "badkey.pem"))

        def testProtocolSSL2(self):
            if test_support.verbose:
                sys.stdout.write("\n")
            tryProtocolCombo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv2, True)
            tryProtocolCombo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv2, True, ssl.CERT_OPTIONAL)
            tryProtocolCombo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv2, True, ssl.CERT_REQUIRED)
            tryProtocolCombo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv23, True)
            tryProtocolCombo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_SSLv3, False)
            tryProtocolCombo(ssl.PROTOCOL_SSLv2, ssl.PROTOCOL_TLSv1, False)

        def testProtocolSSL23(self):
            if test_support.verbose:
                sys.stdout.write("\n")
            try:
                tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv2, True)
            except test_support.TestFailed, x:
                # this fails on some older versions of OpenSSL (0.9.7l, for instance)
                if test_support.verbose:
                    sys.stdout.write(
                        " SSL2 client to SSL23 server test unexpectedly failed:\n %s\n"
                        % str(x))
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True)
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True)
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True)

            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True, ssl.CERT_OPTIONAL)
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, ssl.CERT_OPTIONAL)
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True, ssl.CERT_OPTIONAL)

            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv3, True, ssl.CERT_REQUIRED)
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_SSLv23, True, ssl.CERT_REQUIRED)
            tryProtocolCombo(ssl.PROTOCOL_SSLv23, ssl.PROTOCOL_TLSv1, True, ssl.CERT_REQUIRED)

        def testProtocolSSL3(self):
            if test_support.verbose:
                sys.stdout.write("\n")
            tryProtocolCombo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv3, True)
            tryProtocolCombo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv3, True, ssl.CERT_OPTIONAL)
            tryProtocolCombo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv3, True, ssl.CERT_REQUIRED)
            tryProtocolCombo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv2, False)
            tryProtocolCombo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_SSLv23, False)
            tryProtocolCombo(ssl.PROTOCOL_SSLv3, ssl.PROTOCOL_TLSv1, False)

        def testProtocolTLS1(self):
            if test_support.verbose:
                sys.stdout.write("\n")
            tryProtocolCombo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_TLSv1, True)
            tryProtocolCombo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_TLSv1, True, ssl.CERT_OPTIONAL)
            tryProtocolCombo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_TLSv1, True, ssl.CERT_REQUIRED)
            tryProtocolCombo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_SSLv2, False)
            tryProtocolCombo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_SSLv3, False)
            tryProtocolCombo(ssl.PROTOCOL_TLSv1, ssl.PROTOCOL_SSLv23, False)

        def testSTARTTLS (self):

            msgs = ("msg 1", "MSG 2", "STARTTLS", "MSG 3", "msg 4", "ENDTLS", "msg 5", "msg 6")

            server = ThreadedEchoServer(CERTFILE,
                                        ssl_version=ssl.PROTOCOL_TLSv1,
                                        starttls_server=True,
                                        chatty=True,
                                        connectionchatty=True)
            flag = threading.Event()
            server.start(flag)
            # wait for it to start
            flag.wait()
            # try to connect
            wrapped = False
            try:
                try:
                    s = socket.socket()
                    s.setblocking(1)
                    s.connect((HOST, server.port))
                except Exception, x:
                    raise test_support.TestFailed("Unexpected exception:  " + str(x))
                else:
                    if test_support.verbose:
                        sys.stdout.write("\n")
                    for indata in msgs:
                        if test_support.verbose:
                            sys.stdout.write(
                                " client:  sending %s...\n" % repr(indata))
                        if wrapped:
                            conn.write(indata)
                            outdata = conn.read()
                        else:
                            s.send(indata)
                            outdata = s.recv(1024)
                        if (indata == "STARTTLS" and
                            outdata.strip().lower().startswith("ok")):
                            if test_support.verbose:
                                sys.stdout.write(
                                    " client:  read %s from server, starting TLS...\n"
                                    % repr(outdata))
                            conn = ssl.wrap_socket(s, ssl_version=ssl.PROTOCOL_TLSv1)
                            wrapped = True
                        elif (indata == "ENDTLS" and
                            outdata.strip().lower().startswith("ok")):
                            if test_support.verbose:
                                sys.stdout.write(
                                    " client:  read %s from server, ending TLS...\n"
                                    % repr(outdata))
                            s = conn.unwrap()
                            wrapped = False
                        else:
                            if test_support.verbose:
                                sys.stdout.write(
                                    " client:  read %s from server\n" % repr(outdata))
                    if test_support.verbose:
                        sys.stdout.write(" client:  closing connection.\n")
                    if wrapped:
                        conn.write("over\n")
                    else:
                        s.send("over\n")
                    s.close()
            finally:
                server.stop()
                server.join()

        def testSocketServer(self):

            server = SocketServerHTTPSServer(CERTFILE)
            flag = threading.Event()
            server.start(flag)
            # wait for it to start
            flag.wait()
            # try to connect
            try:
                try:
                    if test_support.verbose:
                        sys.stdout.write('\n')
                    d1 = open(CERTFILE, 'rb').read()
                    d2 = ''
                    # now fetch the same data from the HTTPS server
                    url = 'https://127.0.0.1:%d/%s' % (
                        server.port, os.path.split(CERTFILE)[1])
                    f = urllib.urlopen(url)
                    dlen = f.info().getheader("content-length")
                    if dlen and (int(dlen) > 0):
                        d2 = f.read(int(dlen))
                        if test_support.verbose:
                            sys.stdout.write(
                                " client: read %d bytes from remote server '%s'\n"
                                % (len(d2), server))
                    f.close()
                except:
                    msg = ''.join(traceback.format_exception(*sys.exc_info()))
                    if test_support.verbose:
                        sys.stdout.write('\n' + msg)
                    raise test_support.TestFailed(msg)
                else:
                    if not (d1 == d2):
                        raise test_support.TestFailed(
                            "Couldn't fetch data from HTTPS server")
            finally:
                server.stop()
                server.join()

        def testWrappedAccept (self):

            if test_support.verbose:
                sys.stdout.write("\n")
            serverParamsTest(CERTFILE, ssl.PROTOCOL_SSLv23, ssl.CERT_REQUIRED,
                             CERTFILE, CERTFILE, ssl.PROTOCOL_SSLv23,
                             chatty=True, connectionchatty=True,
                             wrap_accepting_socket=True)


        def testAsyncoreServer (self):

            indata = "TEST MESSAGE of mixed case\n"

            if test_support.verbose:
                sys.stdout.write("\n")
            server = AsyncoreEchoServer(CERTFILE)
            flag = threading.Event()
            server.start(flag)
            # wait for it to start
            flag.wait()
            # try to connect
            try:
                try:
                    s = ssl.wrap_socket(socket.socket())
                    s.connect(('127.0.0.1', server.port))
                except ssl.SSLError, x:
                    raise test_support.TestFailed("Unexpected SSL error:  " + str(x))
                except Exception, x:
                    raise test_support.TestFailed("Unexpected exception:  " + str(x))
                else:
                    if test_support.verbose:
                        sys.stdout.write(
                            " client:  sending %s...\n" % (repr(indata)))
                    s.write(indata)
                    outdata = s.read()
                    if test_support.verbose:
                        sys.stdout.write(" client:  read %s\n" % repr(outdata))
                    if outdata != indata.lower():
                        raise test_support.TestFailed(
                            "bad data <<%s>> (%d) received; expected <<%s>> (%d)\n"
                            % (outdata[:min(len(outdata),20)], len(outdata),
                               indata[:min(len(indata),20)].lower(), len(indata)))
                    s.write("over\n")
                    if test_support.verbose:
                        sys.stdout.write(" client:  closing connection.\n")
                    s.close()
            finally:
                server.stop()
                # wait for server thread to end
                server.join()


        def testAllRecvAndSendMethods(self):

            if test_support.verbose:
                sys.stdout.write("\n")

            server = ThreadedEchoServer(CERTFILE,
                                        certreqs=ssl.CERT_NONE,
                                        ssl_version=ssl.PROTOCOL_TLSv1,
                                        cacerts=CERTFILE,
                                        chatty=True,
                                        connectionchatty=False)
            flag = threading.Event()
            server.start(flag)
            # wait for it to start
            flag.wait()
            # try to connect
            try:
                try:
                    s = ssl.wrap_socket(socket.socket(),
                                        server_side=False,
                                        certfile=CERTFILE,
                                        ca_certs=CERTFILE,
                                        cert_reqs=ssl.CERT_NONE,
                                        ssl_version=ssl.PROTOCOL_TLSv1)
                    s.connect((HOST, server.port))
                except ssl.SSLError, x:
                    raise test_support.TestFailed("Unexpected SSL error:  " + str(x))
                except Exception, x:
                    raise test_support.TestFailed("Unexpected exception:  " + str(x))
                else:
                    try:
                        bytearray
                    except NameError:
                        bytearray = None
                    # helper methods for standardising recv* method signatures
                    def _recv_into():
                        b = bytearray("\0"*100)
                        count = s.recv_into(b)
                        return b[:count]

                    def _recvfrom_into():
                        b = bytearray("\0"*100)
                        count, addr = s.recvfrom_into(b)
                        return b[:count]

                    # (name, method, whether to expect success, *args)
                    send_methods = [
                        ('send', s.send, True, []),
                        ('sendto', s.sendto, False, ["some.address"]),
                        ('sendall', s.sendall, True, []),
                    ]
                    recv_methods = [
                        ('recv', s.recv, True, []),
                        ('recvfrom', s.recvfrom, False, ["some.address"]),
                        ('recv_into', _recv_into, True, []),
                        ('recvfrom_into', _recvfrom_into, False, []),
                    ]
                    if bytearray is None:
                        recv_methods = recv_methods[:-2]
                    data_prefix = u"PREFIX_"

                    for meth_name, send_meth, expect_success, args in send_methods:
                        indata = data_prefix + meth_name
                        try:
                            send_meth(indata.encode('ASCII', 'strict'), *args)
                            outdata = s.read()
                            outdata = outdata.decode('ASCII', 'strict')
                            if outdata != indata.lower():
                                raise test_support.TestFailed(
                                    "While sending with <<%s>> bad data "
                                    "<<%r>> (%d) received; "
                                    "expected <<%r>> (%d)\n" % (
                                        meth_name, outdata[:20], len(outdata),
                                        indata[:20], len(indata)
                                    )
                                )
                        except ValueError, e:
                            if expect_success:
                                raise test_support.TestFailed(
                                    "Failed to send with method <<%s>>; "
                                    "expected to succeed.\n" % (meth_name,)
                                )
                            if not str(e).startswith(meth_name):
                                raise test_support.TestFailed(
                                    "Method <<%s>> failed with unexpected "
                                    "exception message: %s\n" % (
                                        meth_name, e
                                    )
                                )

                    for meth_name, recv_meth, expect_success, args in recv_methods:
                        indata = data_prefix + meth_name
                        try:
                            s.send(indata.encode('ASCII', 'strict'))
                            outdata = recv_meth(*args)
                            outdata = outdata.decode('ASCII', 'strict')
                            if outdata != indata.lower():
                                raise test_support.TestFailed(
                                    "While receiving with <<%s>> bad data "
                                    "<<%r>> (%d) received; "
                                    "expected <<%r>> (%d)\n" % (
                                        meth_name, outdata[:20], len(outdata),
                                        indata[:20], len(indata)
                                    )
                                )
                        except ValueError, e:
                            if expect_success:
                                raise test_support.TestFailed(
                                    "Failed to receive with method <<%s>>; "
                                    "expected to succeed.\n" % (meth_name,)
                                )
                            if not str(e).startswith(meth_name):
                                raise test_support.TestFailed(
                                    "Method <<%s>> failed with unexpected "
                                    "exception message: %s\n" % (
                                        meth_name, e
                                    )
                                )
                            # consume data
                            s.read()

                    s.write("over\n".encode("ASCII", "strict"))
                    s.close()
            finally:
                server.stop()
                server.join()


def test_main(verbose=False):
    if skip_expected:
        raise test_support.TestSkipped("No SSL support")

    global CERTFILE, SVN_PYTHON_ORG_ROOT_CERT
    CERTFILE = os.path.join(os.path.dirname(__file__) or os.curdir,
                            "keycert.pem")
    SVN_PYTHON_ORG_ROOT_CERT = os.path.join(
        os.path.dirname(__file__) or os.curdir,
        "https_svn_python_org_root.pem")

    if (not os.path.exists(CERTFILE) or
        not os.path.exists(SVN_PYTHON_ORG_ROOT_CERT)):
        raise test_support.TestFailed("Can't read certificate files!")

    TESTPORT = test_support.find_unused_port()
    if not TESTPORT:
        raise test_support.TestFailed("Can't find open port to test servers on!")

    tests = [BasicTests]

    #if test_support.is_resource_enabled('network'):
    tests.append(NetworkedTests)

    #if _have_threads:
    #    thread_info = test_support.threading_setup()
    #    if thread_info and test_support.is_resource_enabled('network'):
    tests.append(ThreadedTests)

    test_support.run_unittest(*tests)

    #if _have_threads:
    #    test_support.threading_cleanup(*thread_info)

if __name__ == "__main__":
    test_main()