summaryrefslogtreecommitdiff
path: root/src/transport/gnunet-transport.c
blob: 49c31663bd19e524edcab37e42a2bf2924076eb7 (plain)
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
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
/*
 This file is part of GNUnet.
 (C) 2011 Christian Grothoff (and other contributing authors)

 GNUnet is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published
 by the Free Software Foundation; either version 3, or (at your
 option) any later version.

 GNUnet is distributed in the hope that it will be useful, but
 WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with GNUnet; see the file COPYING.  If not, write to the
 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.
 */

/**
 * @file src/transport/gnunet-transport.c
 * @brief Tool to help configure, measure and control the transport subsystem.
 * @author Christian Grothoff
 * @author Nathan Evans
 *
 * This utility can be used to test if a transport mechanism for
 * GNUnet is properly configured.
 */

#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_resolver_service.h"
#include "gnunet_protocols.h"
#include "gnunet_transport_service.h"
#include "gnunet_nat_lib.h"

/**
 * How long do we wait for the NAT test to report success?
 * Should match NAT_SERVER_TIMEOUT in 'nat_test.c'.
 */
#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
#define RESOLUTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30)
#define OP_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30)

/**
 * Benchmarking block size in KB
 */
#define BLOCKSIZE 4

/**
 * Which peer should we connect to?
 */
static char *cpid;

/**
 * Handle to transport service.
 */
static struct GNUNET_TRANSPORT_Handle *handle;

/**
 * Configuration handle
 */
static struct GNUNET_CONFIGURATION_Handle *cfg;

/**
 * Try_connect handle
 */
struct GNUNET_TRANSPORT_TryConnectHandle * tc_handle;

/**
 * Option -s.
 */
static int benchmark_send;

/**
 * Option -b.
 */
static int benchmark_receive;

/**
 * Option -l.
 */
static int benchmark_receive;

/**
 * Option -i.
 */
static int iterate_connections;

/**
 * Option -d.
 */
static int iterate_validation;

/**
 * Option -a.
 */
static int iterate_all;

/**
 * Option -t.
 */
static int test_configuration;

/**
 * Option -c.
 */
static int monitor_connects;

/**
 * Option -m.
 */
static int monitor_connections;

/**
 * Option -f.
 */
static int monitor_validation;

/**
 * Option -C.
 */
static int try_connect;

/**
 * Option -n.
 */
static int numeric;

/**
 * Global return value (0 success).
 */
static int ret;

/**
 * Current number of connections in monitor mode
 */
static int monitor_connect_counter;

/**
 * Number of bytes of traffic we received so far.
 */
static unsigned long long traffic_received;

/**
 * Number of bytes of traffic we sent so far.
 */
static unsigned long long traffic_sent;

/**
 * Starting time of transmitting/receiving data.
 */
static struct GNUNET_TIME_Absolute start_time;

/**
 * Handle for current transmission request.
 */
static struct GNUNET_TRANSPORT_TransmitHandle *th;

/**
 * Map storing information about monitored peers
 */
static struct GNUNET_CONTAINER_MultiPeerMap *monitored_peers;

/**
 *
 */
static struct GNUNET_TRANSPORT_PeerMonitoringContext *pic;

static struct GNUNET_TRANSPORT_ValidationMonitoringContext *vic;

/**
 * Identity of the peer we transmit to / connect to.
 * (equivalent to 'cpid' string).
 */
static struct GNUNET_PeerIdentity pid;

/**
 * Task scheduled for cleanup / termination of the process.
 */
static GNUNET_SCHEDULER_TaskIdentifier end;

/**
 * Task for operation timeout
 */
static GNUNET_SCHEDULER_TaskIdentifier op_timeout;

/**
 * Selected level of verbosity.
 */
static int verbosity;

/**
 * Resolver process handle.
 */
struct GNUNET_OS_Process *resolver;

/**
 * Number of tasks running that still need the resolver.
 */
static unsigned int resolver_users;

/**
 * Number of address resolutions pending
 */
static unsigned int address_resolutions;

/**
 * Address resolutions pending in progress
 */
static unsigned int address_resolution_in_progress;


/**
 * Context for a plugin test.
 */
struct TestContext
{

  /**
   * Handle to the active NAT test.
   */
  struct GNUNET_NAT_Test *tst;

  /**
   * Task identifier for the timeout.
   */
  GNUNET_SCHEDULER_TaskIdentifier tsk;

  /**
   * Name of plugin under test.
   */
  const char *name;

};

struct MonitoredPeer
{
  enum GNUNET_TRANSPORT_PeerState state;
  struct GNUNET_TIME_Absolute state_timeout;
  struct GNUNET_HELLO_Address *address;
};


 int destroy_it (void *cls,
    const struct GNUNET_PeerIdentity *key,
    void *value)
{
   struct MonitoredPeer *m = value;
   GNUNET_CONTAINER_multipeermap_remove (monitored_peers, key, value);
   GNUNET_free_non_null (m->address);
   GNUNET_free (value);
   return GNUNET_OK;
}

/**
 * Task run in monitor mode when the user presses CTRL-C to abort.
 * Stops monitoring activity.
 *
 * @param cls the 'struct GNUNET_TRANSPORT_PeerIterateContext *'
 * @param tc scheduler context
 */
static void
shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  struct GNUNET_TIME_Relative duration;
  end = GNUNET_SCHEDULER_NO_TASK;
  if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
  {
    GNUNET_SCHEDULER_cancel (op_timeout);
    op_timeout = GNUNET_SCHEDULER_NO_TASK;
  }
  if (NULL != tc_handle)
  {
    GNUNET_TRANSPORT_try_connect_cancel (tc_handle);
    tc_handle = NULL;
  }
  if (NULL != pic)
  {
    GNUNET_TRANSPORT_monitor_peers_cancel (pic);
    pic = NULL;
  }
  if (NULL != vic)
  {
    GNUNET_TRANSPORT_monitor_validation_entries_cancel (vic);
    vic = NULL;
  }
  if (NULL != th)
  {
    GNUNET_TRANSPORT_notify_transmit_ready_cancel (th);
    th = NULL;
  }
  if (NULL != handle)
  {
    GNUNET_TRANSPORT_disconnect (handle);
    handle = NULL;
  }
  if (benchmark_send)
  {
    duration = GNUNET_TIME_absolute_get_duration (start_time);
    FPRINTF (stdout, _("Transmitted %llu bytes/s (%llu bytes in %s)\n"),
        1000LL * 1000LL * traffic_sent / (1 + duration.rel_value_us),
        traffic_sent,
        GNUNET_STRINGS_relative_time_to_string (duration, GNUNET_YES));
  }
  if (benchmark_receive)
  {
    duration = GNUNET_TIME_absolute_get_duration (start_time);
    FPRINTF (stdout, _("Received %llu bytes/s (%llu bytes in %s)\n"),
        1000LL * 1000LL * traffic_received / (1 + duration.rel_value_us),
        traffic_received,
        GNUNET_STRINGS_relative_time_to_string (duration, GNUNET_YES));
  }

  if (NULL != monitored_peers)
  {
    GNUNET_CONTAINER_multipeermap_iterate (monitored_peers, &destroy_it, NULL);
    GNUNET_CONTAINER_multipeermap_destroy (monitored_peers);
    monitored_peers = NULL;
  }
}

static struct PeerResolutionContext *rc_head;
static struct PeerResolutionContext *rc_tail;

struct PeerResolutionContext
{
  struct PeerResolutionContext *next;
  struct PeerResolutionContext *prev;
  struct GNUNET_PeerIdentity id;
  struct GNUNET_HELLO_Address *addrcp;
  struct GNUNET_TRANSPORT_AddressToStringContext *asc;
  enum GNUNET_TRANSPORT_PeerState state;
  struct GNUNET_TIME_Absolute state_timeout;
  char *transport;
  int printed;
};

static struct ValidationResolutionContext *vc_head;
static struct ValidationResolutionContext *vc_tail;

struct ValidationResolutionContext
{
  struct ValidationResolutionContext *next;
  struct ValidationResolutionContext *prev;

  struct GNUNET_PeerIdentity id;
  struct GNUNET_HELLO_Address *addrcp;
  struct GNUNET_TIME_Absolute last_validation;
  struct GNUNET_TIME_Absolute valid_until;
  struct GNUNET_TIME_Absolute next_validation;
  enum GNUNET_TRANSPORT_ValidationState state;

  struct GNUNET_TRANSPORT_AddressToStringContext *asc;

  char *transport;
  int printed;
};

static void
operation_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  struct PeerResolutionContext *cur;
  struct PeerResolutionContext *next;
  op_timeout = GNUNET_SCHEDULER_NO_TASK;
  if ((try_connect) || (benchmark_send) || (benchmark_receive))
  {
    FPRINTF (stdout, _("Failed to connect to `%s'\n"), GNUNET_i2s_full (&pid));
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    ret = 1;
    return;
  }
  if (iterate_connections)
  {
    next = rc_head;
    while (NULL != (cur = next))
    {
      next = cur->next;
      FPRINTF (stdout, _("Failed to resolve address for peer `%s'\n"),
          GNUNET_i2s (&cur->addrcp->peer));

      GNUNET_CONTAINER_DLL_remove(rc_head, rc_tail, cur);
      GNUNET_TRANSPORT_address_to_string_cancel (cur->asc);
      GNUNET_free(cur->transport);
      GNUNET_free(cur->addrcp);
      GNUNET_free(cur);

    }
    FPRINTF (stdout, "%s", _("Failed to list connections, timeout occured\n") );
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    ret = 1;
    return;
  }

}

/**
 * Display the result of the test.
 *
 * @param tc test context
 * @param result #GNUNET_YES on success
 */
static void
display_test_result (struct TestContext *tc, int result)
{
  if (GNUNET_YES != result)
  {
    FPRINTF (stderr, "Configuration for plugin `%s' did not work!\n", tc->name);
  }
  else
  {
    FPRINTF (stderr, "Configuration for plugin `%s' is working!\n", tc->name);
  }
  if (GNUNET_SCHEDULER_NO_TASK != tc->tsk)
  {
    GNUNET_SCHEDULER_cancel (tc->tsk);
    tc->tsk = GNUNET_SCHEDULER_NO_TASK;
  }
  if (NULL != tc->tst)
  {
    GNUNET_NAT_test_stop (tc->tst);
    tc->tst = NULL;
  }
  GNUNET_free(tc);
  resolver_users--;
  if ((0 == resolver_users) && (NULL != resolver))
  {
    GNUNET_break(0 == GNUNET_OS_process_kill (resolver, GNUNET_TERM_SIG));
    GNUNET_OS_process_destroy (resolver);
    resolver = NULL;
  }
}

/**
 * Function called by NAT on success.
 * Clean up and update GUI (with success).
 *
 * @param cls test context
 * @param success currently always #GNUNET_OK
 * @param emsg error message, NULL on success
 */
static void
result_callback (void *cls, int success, const char *emsg)
{
  struct TestContext *tc = cls;

  display_test_result (tc, success);
}

/**
 * Function called if NAT failed to confirm success.
 * Clean up and update GUI (with failure).
 *
 * @param cls test context
 * @param tc scheduler callback
 */
static void
fail_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  struct TestContext *tstc = cls;

  tstc->tsk = GNUNET_SCHEDULER_NO_TASK;
  display_test_result (tstc, GNUNET_NO);
}


static void
resolve_validation_address (const struct GNUNET_PeerIdentity *id,
    const struct GNUNET_HELLO_Address *address, int numeric,
    struct GNUNET_TIME_Absolute last_validation,
    struct GNUNET_TIME_Absolute valid_until,
    struct GNUNET_TIME_Absolute next_validation,
    enum GNUNET_TRANSPORT_ValidationState state);

static void
process_validation_string (void *cls, const char *address)
{
  struct ValidationResolutionContext *vc = cls;
  char *s_valid;
  char *s_last;
  char *s_next;

  if (address != NULL )
  {
    if (GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us == vc->valid_until.abs_value_us)
      s_valid = GNUNET_strdup("never");
    else
      s_valid = GNUNET_strdup(GNUNET_STRINGS_absolute_time_to_string (vc->valid_until));

    if (GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us == vc->last_validation.abs_value_us)
      s_last = GNUNET_strdup("never");
    else
      s_last = GNUNET_strdup(GNUNET_STRINGS_absolute_time_to_string (vc->last_validation));

    if (GNUNET_TIME_UNIT_ZERO_ABS.abs_value_us == vc->next_validation.abs_value_us)
      s_next = GNUNET_strdup("never");
    else
      s_next = GNUNET_strdup(GNUNET_STRINGS_absolute_time_to_string (vc->next_validation));

    FPRINTF (stdout,
        _("Peer `%s' %s %s\n\t%s%s\n\t%s%s\n\t%s%s\n"),
        GNUNET_i2s (&vc->id), address,
        (monitor_validation) ? GNUNET_TRANSPORT_vs2s (vc->state) : "",
        "Valid until    : ", s_valid,
        "Last validation: ",s_last,
        "Next validation: ", s_next);
    GNUNET_free (s_valid);
    GNUNET_free (s_last);
    GNUNET_free (s_next);
    vc->printed = GNUNET_YES;
  }
  else
  {
    /* done */
    GNUNET_assert(address_resolutions > 0);
    address_resolutions--;
    if (GNUNET_NO == vc->printed)
    {
      if (numeric == GNUNET_NO)
      {
        /* Failed to resolve address, try numeric lookup */
        resolve_validation_address (&vc->id, vc->addrcp, GNUNET_NO,
           vc->last_validation, vc->valid_until, vc->next_validation,
           vc->state);
      }
      else
      {
        FPRINTF (stdout, _("Peer `%s' %s `%s' \n"),
            GNUNET_i2s (&vc->id), "<unable to resolve address>",
            GNUNET_TRANSPORT_vs2s (vc->state));
      }
    }
    GNUNET_free (vc->transport);
    GNUNET_free (vc->addrcp);
    GNUNET_CONTAINER_DLL_remove(vc_head, vc_tail, vc);
    GNUNET_free(vc);
    if ((0 == address_resolutions) && (iterate_validation))
    {
      if (GNUNET_SCHEDULER_NO_TASK != end)
      {
        GNUNET_SCHEDULER_cancel (end);
        end = GNUNET_SCHEDULER_NO_TASK;
      }
      if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
      {
        GNUNET_SCHEDULER_cancel (op_timeout);
        op_timeout = GNUNET_SCHEDULER_NO_TASK;
      }
      ret = 0;
      end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    }
  }
}



static void
resolve_validation_address (const struct GNUNET_PeerIdentity *id,
    const struct GNUNET_HELLO_Address *address, int numeric,
    struct GNUNET_TIME_Absolute last_validation,
    struct GNUNET_TIME_Absolute valid_until,
    struct GNUNET_TIME_Absolute next_validation,
    enum GNUNET_TRANSPORT_ValidationState state)
{
  struct ValidationResolutionContext *vc;

  vc = GNUNET_new (struct ValidationResolutionContext);
  GNUNET_assert(NULL != vc);
  GNUNET_CONTAINER_DLL_insert(vc_head, vc_tail, vc);
  address_resolutions++;

  vc->id = (*id);
  vc->transport = GNUNET_strdup(address->transport_name);
  vc->addrcp = GNUNET_HELLO_address_copy (address);
  vc->printed = GNUNET_NO;
  vc->state = state;
  vc->last_validation = last_validation;
  vc->valid_until = valid_until;
  vc->next_validation = next_validation;

  /* Resolve address to string */
  vc->asc = GNUNET_TRANSPORT_address_to_string (cfg, address, numeric,
      RESOLUTION_TIMEOUT, &process_validation_string, vc);
}


void process_validation_cb (void *cls,
    const struct GNUNET_PeerIdentity *peer,
    const struct GNUNET_HELLO_Address *address,
    struct GNUNET_TIME_Absolute last_validation,
    struct GNUNET_TIME_Absolute valid_until,
    struct GNUNET_TIME_Absolute next_validation,
    enum GNUNET_TRANSPORT_ValidationState state)
{
  if ((NULL == peer) && (NULL == address))
  {
    /* done */
    vic = NULL;
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    return;
  }
  if ((NULL == peer) || (NULL == address))
  {
    /* invalid response */
    vic = NULL;
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    return;
  }
  resolve_validation_address (peer, address,
     numeric, last_validation,
     valid_until, next_validation, state);
}

/**
 * Test our plugin's configuration (NAT traversal, etc.).
 *
 * @param cfg configuration to test
 */
static void
do_test_configuration (const struct GNUNET_CONFIGURATION_Handle *cfg)
{
  char *plugins;
  char *tok;
  unsigned long long bnd_port;
  unsigned long long adv_port;
  struct TestContext *tc;
  char *binary;

  if (GNUNET_OK
      != GNUNET_CONFIGURATION_get_value_string (cfg, "transport", "plugins",
          &plugins))
  {
    FPRINTF (stderr, "%s", _
    ("No transport plugins configured, peer will never communicate\n") );
    ret = 4;
    return;
  }
  for (tok = strtok (plugins, " "); tok != NULL ; tok = strtok (NULL, " "))
  {
    char section[12 + strlen (tok)];

    GNUNET_snprintf (section, sizeof(section), "transport-%s", tok);
    if (GNUNET_OK
        != GNUNET_CONFIGURATION_get_value_number (cfg, section, "PORT",
            &bnd_port))
    {
      FPRINTF (stderr,
          _("No port configured for plugin `%s', cannot test it\n"), tok);
      continue;
    }
    if (GNUNET_OK
        != GNUNET_CONFIGURATION_get_value_number (cfg, section,
            "ADVERTISED_PORT", &adv_port))
      adv_port = bnd_port;
    if (NULL == resolver)
    {
      binary = GNUNET_OS_get_libexec_binary_path ("gnunet-service-resolver");
      resolver = GNUNET_OS_start_process (GNUNET_YES,
          GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL, binary,
          "gnunet-service-resolver", NULL );
      GNUNET_free(binary);
    }
    resolver_users++;
    GNUNET_RESOLVER_connect (cfg);
    tc = GNUNET_new (struct TestContext);
    tc->name = GNUNET_strdup (tok);
    tc->tst = GNUNET_NAT_test_start (cfg,
        (0 == strcasecmp (tok, "udp")) ? GNUNET_NO : GNUNET_YES,
        (uint16_t) bnd_port, (uint16_t) adv_port, &result_callback, tc);
    if (NULL == tc->tst)
    {
      display_test_result (tc, GNUNET_SYSERR);
      continue;
    }
    tc->tsk = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &fail_timeout, tc);
  }
  GNUNET_free(plugins);
}

/**
 * Function called to notify a client about the socket
 * begin ready to queue more data.  @a buf will be
 * NULL and @a size zero if the socket was closed for
 * writing in the meantime.
 *
 * @param cls closure
 * @param size number of bytes available in @a buf
 * @param buf where the callee should write the message
 * @return number of bytes written to @a buf
 */
static size_t
transmit_data (void *cls, size_t size, void *buf)
{
  struct GNUNET_MessageHeader *m = buf;

  if ((NULL == buf) || (0 == size))
  {
    th = NULL;
    return 0;
  }

  GNUNET_assert(size >= sizeof(struct GNUNET_MessageHeader));
  GNUNET_assert(size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
  m->size = ntohs (size);
  m->type = ntohs (GNUNET_MESSAGE_TYPE_DUMMY);
  memset (&m[1], 52, size - sizeof(struct GNUNET_MessageHeader));
  traffic_sent += size;
  th = GNUNET_TRANSPORT_notify_transmit_ready (handle, &pid,
                                               BLOCKSIZE * 1024,
                                               GNUNET_TIME_UNIT_FOREVER_REL,
                                               &transmit_data, NULL );
  if (verbosity > 0)
    FPRINTF (stdout, _("Transmitting %u bytes to %s\n"), (unsigned int) size,
        GNUNET_i2s (&pid));
  return size;
}

/**
 * Function called to notify transport users that another
 * peer connected to us.
 *
 * @param cls closure
 * @param peer the peer that connected
 */
static void
notify_connect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
  if (0 != memcmp (&pid, peer, sizeof(struct GNUNET_PeerIdentity)))
    return;
  ret = 0;
  if (try_connect)
  {
    /* all done, terminate instantly */
    FPRINTF (stdout, _("Successfully connected to `%s'\n"),
        GNUNET_i2s_full (peer));
    ret = 0;

    if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
    {
      GNUNET_SCHEDULER_cancel (op_timeout);
      op_timeout = GNUNET_SCHEDULER_NO_TASK;
    }

    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    return;
  }
  if (benchmark_send)
  {
    if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
    {
      GNUNET_SCHEDULER_cancel (op_timeout);
      op_timeout = GNUNET_SCHEDULER_NO_TASK;
    }
    if (verbosity > 0)
      FPRINTF (stdout,
          _("Successfully connected to `%s', starting to send benchmark data in %u Kb blocks\n"),
          GNUNET_i2s (&pid), BLOCKSIZE);
    start_time = GNUNET_TIME_absolute_get ();
    if (NULL == th)
      th = GNUNET_TRANSPORT_notify_transmit_ready (handle, peer,
                                                   BLOCKSIZE * 1024,
                                                   GNUNET_TIME_UNIT_FOREVER_REL,
                                                   &transmit_data,
                                                   NULL);
    else
      GNUNET_break(0);
    return;
  }
}

/**
 * Function called to notify transport users that another
 * peer disconnected from us.
 *
 * @param cls closure
 * @param peer the peer that disconnected
 */
static void
notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
  if (0 != memcmp (&pid, peer, sizeof(struct GNUNET_PeerIdentity)))
    return;

  if (NULL != th)
  {
    GNUNET_TRANSPORT_notify_transmit_ready_cancel (th);
    th = NULL;
  }
  if (benchmark_send)
  {
    FPRINTF (stdout, _("Disconnected from peer `%s' while benchmarking\n"),
        GNUNET_i2s (&pid));
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    return;
  }
}

/**
 * Function called to notify transport users that another
 * peer connected to us.
 *
 * @param cls closure
 * @param peer the peer that connected
 */
static void
monitor_notify_connect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
  monitor_connect_counter++;
  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
  const char *now_str = GNUNET_STRINGS_absolute_time_to_string (now);

  FPRINTF (stdout, _("%24s: %-17s %4s   (%u connections in total)\n"), now_str,
      _("Connected to"), GNUNET_i2s (peer), monitor_connect_counter);
}

/**
 * Function called to notify transport users that another
 * peer disconnected from us.
 *
 * @param cls closure
 * @param peer the peer that disconnected
 */
static void
monitor_notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
  struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
  const char *now_str = GNUNET_STRINGS_absolute_time_to_string (now);

  GNUNET_assert(monitor_connect_counter > 0);
  monitor_connect_counter--;

  FPRINTF (stdout, _("%24s: %-17s %4s   (%u connections in total)\n"), now_str,
      _("Disconnected from"), GNUNET_i2s (peer), monitor_connect_counter);
}

/**
 * Function called by the transport for each received message.
 *
 * @param cls closure
 * @param peer (claimed) identity of the other peer
 * @param message the message
 */
static void
notify_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
    const struct GNUNET_MessageHeader *message)
{
  if (benchmark_receive)
  {
    if (GNUNET_MESSAGE_TYPE_DUMMY != ntohs (message->type))
      return;
    if (verbosity > 0)
      FPRINTF (stdout, _("Received %u bytes from %s\n"),
          (unsigned int) ntohs (message->size), GNUNET_i2s (peer));

    if (traffic_received == 0)
      start_time = GNUNET_TIME_absolute_get ();
    traffic_received += ntohs (message->size);
    return;
  }
}

static void
resolve_peer_address (const struct GNUNET_PeerIdentity *id,
    const struct GNUNET_HELLO_Address *address, int numeric,
    enum GNUNET_TRANSPORT_PeerState state,
    struct GNUNET_TIME_Absolute state_timeout);

static void
print_info (const struct GNUNET_PeerIdentity *id, const char *transport,
    const char *addr, enum GNUNET_TRANSPORT_PeerState state,
    struct GNUNET_TIME_Absolute state_timeout)
{
  if ((GNUNET_YES == iterate_all) || (GNUNET_YES == monitor_connections) )
  {
    FPRINTF (stdout, _("Peer `%s': %s %s in state `%s' until %s\n"),
        GNUNET_i2s (id),
        (NULL == transport) ? "<none>" : transport,
        (NULL == transport) ? "<none>" : addr,
        GNUNET_TRANSPORT_ps2s (state),
        GNUNET_STRINGS_absolute_time_to_string (state_timeout));
  }
  else
  {
    /* Only connected peers, skip state */
    FPRINTF (stdout, _("Peer `%s': %s %s\n"), GNUNET_i2s (id), transport, addr);
  }

}

static void
process_peer_string (void *cls, const char *address)
{
  struct PeerResolutionContext *rc = cls;

  if (address != NULL )
  {
    print_info (&rc->id, rc->transport, address, rc->state, rc->state_timeout);
    rc->printed = GNUNET_YES;
  }
  else
  {
    /* done */
    GNUNET_assert(address_resolutions > 0);
    address_resolutions--;
    if (GNUNET_NO == rc->printed)
    {
      if (numeric == GNUNET_NO)
      {
        /* Failed to resolve address, try numeric lookup */
        resolve_peer_address (&rc->id, rc->addrcp, GNUNET_YES,
            rc->state, rc->state_timeout);
      }
      else
      {
        print_info (&rc->id, rc->transport, "<unable to resolve address>",
            rc->state, rc->state_timeout);
      }
    }
    GNUNET_free (rc->transport);
    GNUNET_free (rc->addrcp);
    GNUNET_CONTAINER_DLL_remove(rc_head, rc_tail, rc);
    GNUNET_free(rc);
    if ((0 == address_resolutions) && (iterate_connections))
    {
      if (GNUNET_SCHEDULER_NO_TASK != end)
      {
        GNUNET_SCHEDULER_cancel (end);
        end = GNUNET_SCHEDULER_NO_TASK;
      }
      if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
      {
        GNUNET_SCHEDULER_cancel (op_timeout);
        op_timeout = GNUNET_SCHEDULER_NO_TASK;
      }
      ret = 0;
      end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    }
  }
}

static void
resolve_peer_address (const struct GNUNET_PeerIdentity *id,
    const struct GNUNET_HELLO_Address *address, int numeric,
    enum GNUNET_TRANSPORT_PeerState state,
    struct GNUNET_TIME_Absolute state_timeout)
{
  struct PeerResolutionContext *rc;

  rc = GNUNET_new (struct PeerResolutionContext);
  GNUNET_assert(NULL != rc);
  GNUNET_CONTAINER_DLL_insert(rc_head, rc_tail, rc);
  address_resolutions++;

  rc->id = (*id);
  rc->transport = GNUNET_strdup(address->transport_name);
  rc->addrcp = GNUNET_HELLO_address_copy (address);
  rc->printed = GNUNET_NO;
  rc->state = state;
  rc->state_timeout = state_timeout;
  /* Resolve address to string */
  rc->asc = GNUNET_TRANSPORT_address_to_string (cfg, address, numeric,
      RESOLUTION_TIMEOUT, &process_peer_string, rc);
}

/**
 * Function called with information about a peers during a one shot iteration
 *
 * @param cls closure
 * @param peer identity of the peer, NULL for final callback when operation done
 * @param address binary address used to communicate with this peer,
 *  NULL on disconnect or when done
 * @param state current state this peer is in
 * @param state_timeout time out for the current state
 *
 */
static void
process_peer_iteration_cb (void *cls, const struct GNUNET_PeerIdentity *peer,
    const struct GNUNET_HELLO_Address *address,
    enum GNUNET_TRANSPORT_PeerState state,
    struct GNUNET_TIME_Absolute state_timeout)
{
  if (peer == NULL )
  {
    /* done */
    address_resolution_in_progress = GNUNET_NO;
    pic = NULL;
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    return;
  }

  if ((GNUNET_NO == iterate_all) && (GNUNET_NO == GNUNET_TRANSPORT_is_connected(state)) )
      return; /* Display only connected peers */

  if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
    GNUNET_SCHEDULER_cancel (op_timeout);
  op_timeout = GNUNET_SCHEDULER_add_delayed (OP_TIMEOUT, &operation_timeout,
      NULL );

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Received address for peer `%s': %s\n",
      GNUNET_i2s (peer), address->transport_name);

  if (NULL != address)
    resolve_peer_address (peer, address, numeric, state, state_timeout);
  else
    print_info (peer, NULL, NULL, state, state_timeout);
}


/**
 * Function called with information about a peers
 *
 * @param cls closure
 * @param peer identity of the peer, NULL for final callback when operation done
 * @param address binary address used to communicate with this peer,
 *  NULL on disconnect or when done
 * @param state current state this peer is in
 * @param state_timeout time out for the current state
 *
 */
static void
process_peer_monitoring_cb (void *cls, const struct GNUNET_PeerIdentity *peer,
    const struct GNUNET_HELLO_Address *address,
    enum GNUNET_TRANSPORT_PeerState state,
    struct GNUNET_TIME_Absolute state_timeout)
{
  struct MonitoredPeer *m;

  if (peer == NULL )
  {
    /* done */
    address_resolution_in_progress = GNUNET_NO;
    pic = NULL;
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    return;
  }

  if (GNUNET_SCHEDULER_NO_TASK != op_timeout)
    GNUNET_SCHEDULER_cancel (op_timeout);
  op_timeout = GNUNET_SCHEDULER_add_delayed (OP_TIMEOUT, &operation_timeout,
      NULL );

  if (NULL == (m = GNUNET_CONTAINER_multipeermap_get (monitored_peers, peer)))
  {
    m = GNUNET_new (struct MonitoredPeer);
    GNUNET_CONTAINER_multipeermap_put (monitored_peers, peer,
        m, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
  }
  else
  {
    if ( (m->state == state) &&
      (m->state_timeout.abs_value_us == state_timeout.abs_value_us) &&
      ((NULL == address) && (NULL == m->address)) )
    {
      return; /* No real change */
    }
    if ( ((NULL != address) && (NULL != m->address)) &&
        (0 == GNUNET_HELLO_address_cmp(m->address, address)) )
      return; /* No real change */
  }


  if (NULL != m->address)
  {
    GNUNET_free (m->address);
    m->address = NULL;
  }
  if (NULL != address)
    m->address = GNUNET_HELLO_address_copy (address);
  m->state = state;
  m->state_timeout = state_timeout;

  if (NULL != address)
    resolve_peer_address (peer, m->address, numeric, m->state, m->state_timeout);
  else
    print_info (peer, NULL, NULL, m->state, m->state_timeout);
}

static void
try_connect_cb (void *cls, const int result)
{
  static int retries = 0;
  if (GNUNET_OK == result)
  {
    tc_handle = NULL;
    return;
  }
  retries++;
  if (retries < 10)
    tc_handle = GNUNET_TRANSPORT_try_connect (handle, &pid, try_connect_cb,
        NULL );
  else
  {
    FPRINTF (stderr, "%s",
        _("Failed to send connect request to transport service\n") );
    if (GNUNET_SCHEDULER_NO_TASK != end)
      GNUNET_SCHEDULER_cancel (end);
    ret = 1;
    end = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL );
    return;
  }
}

/**
 * Function called with the result of the check if the 'transport'
 * service is running.
 *
 * @param cls closure with our configuration
 * @param result #GNUNET_YES if transport is running
 */
static void
testservice_task (void *cls, int result)
{
  int counter = 0;
  ret = 1;

  if (GNUNET_YES != result)
  {
    FPRINTF (stderr, _("Service `%s' is not running\n"), "transport");
    return;
  }

  if ((NULL != cpid)
      && (GNUNET_OK
          != GNUNET_CRYPTO_eddsa_public_key_from_string (cpid, strlen (cpid),
              &pid.public_key)))
  {
    FPRINTF (stderr, _("Failed to parse peer identity `%s'\n"), cpid);
    return;
  }

  counter = benchmark_send + benchmark_receive + iterate_connections
      + monitor_connections + monitor_connects + try_connect
      + iterate_validation + monitor_validation;

  if (1 < counter)
  {
    FPRINTF (stderr,
        _("Multiple operations given. Please choose only one operation: %s, %s, %s, %s, %s, %s\n"),
        "connect", "benchmark send", "benchmark receive", "information",
        "monitor", "events");
    return;
  }
  if (0 == counter)
  {
    FPRINTF (stderr,
        _("No operation given. Please choose one operation: %s, %s, %s, %s, %s, %s\n"),
        "connect", "benchmark send", "benchmark receive", "information",
        "monitor", "events");
    return;
  }

  if (try_connect) /* -C: Connect to peer */
  {
    if (NULL == cpid)
    {
      FPRINTF (stderr, _("Option `%s' makes no sense without option `%s'.\n"),
          "-C", "-p");
      ret = 1;
      return;
    }
    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL, &notify_receive,
        &notify_connect, &notify_disconnect);
    if (NULL == handle)
    {
      FPRINTF (stderr, "%s", _("Failed to connect to transport service\n") );
      ret = 1;
      return;
    }
    tc_handle = GNUNET_TRANSPORT_try_connect (handle, &pid, try_connect_cb,
        NULL );
    if (NULL == tc_handle)
    {
      FPRINTF (stderr, "%s",
          _("Failed to send request to transport service\n") );
      ret = 1;
      return;
    }
    op_timeout = GNUNET_SCHEDULER_add_delayed (OP_TIMEOUT, &operation_timeout,
        NULL );

  }
  else if (benchmark_send) /* -s: Benchmark sending */
  {
    if (NULL == cpid)
    {
      FPRINTF (stderr, _("Option `%s' makes no sense without option `%s'.\n"),
          "-s", "-p");
      ret = 1;
      return;
    }
    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL, &notify_receive,
        &notify_connect, &notify_disconnect);
    if (NULL == handle)
    {
      FPRINTF (stderr, "%s", _("Failed to connect to transport service\n") );
      ret = 1;
      return;
    }
    tc_handle = GNUNET_TRANSPORT_try_connect (handle, &pid, try_connect_cb,
        NULL );
    if (NULL == tc_handle)
    {
      FPRINTF (stderr, "%s",
          _("Failed to send request to transport service\n") );
      ret = 1;
      return;
    }
    start_time = GNUNET_TIME_absolute_get ();
    op_timeout = GNUNET_SCHEDULER_add_delayed (OP_TIMEOUT, &operation_timeout,
        NULL );
  }
  else if (benchmark_receive) /* -b: Benchmark receiving */
  {
    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL, &notify_receive, NULL,
        NULL );
    if (NULL == handle)
    {
      FPRINTF (stderr, "%s", _("Failed to connect to transport service\n") );
      ret = 1;
      return;
    }
    if (verbosity > 0)
      FPRINTF (stdout, "%s", _("Starting to receive benchmark data\n") );
    start_time = GNUNET_TIME_absolute_get ();

  }
  else if (iterate_connections) /* -i: List information about peers once */
  {
    address_resolution_in_progress = GNUNET_YES;
    pic = GNUNET_TRANSPORT_monitor_peers (cfg, (NULL == cpid) ? NULL : &pid,
        GNUNET_YES, TIMEOUT, &process_peer_iteration_cb, (void *) cfg);
    op_timeout = GNUNET_SCHEDULER_add_delayed (OP_TIMEOUT, &operation_timeout,
        NULL );
  }
  else if (monitor_connections) /* -m: List information about peers continuously */
  {
    monitored_peers = GNUNET_CONTAINER_multipeermap_create (10, GNUNET_NO);
    address_resolution_in_progress = GNUNET_YES;
    pic = GNUNET_TRANSPORT_monitor_peers (cfg, (NULL == cpid) ? NULL : &pid,
        GNUNET_NO, TIMEOUT, &process_peer_monitoring_cb, (void *) cfg);
  }
  else if (iterate_validation) /* -d: Print information about validations */
  {
    vic = GNUNET_TRANSPORT_monitor_validation_entries (cfg,
        (NULL == cpid) ? NULL : &pid,
        GNUNET_YES, TIMEOUT, &process_validation_cb, (void *) cfg);
  }
  else if (monitor_validation) /* -f: Print information about validations continuously */
  {
    vic = GNUNET_TRANSPORT_monitor_validation_entries (cfg,
        (NULL == cpid) ? NULL : &pid,
        GNUNET_NO, TIMEOUT, &process_validation_cb, (void *) cfg);
  }
  else if (monitor_connects) /* -e : Monitor (dis)connect events continuously */
  {
    monitor_connect_counter = 0;
    handle = GNUNET_TRANSPORT_connect (cfg, NULL, NULL, NULL,
        &monitor_notify_connect, &monitor_notify_disconnect);
    if (NULL == handle)
    {
      FPRINTF (stderr, "%s", _("Failed to connect to transport service\n") );
      ret = 1;
      return;
    }
    ret = 0;
  }
  else
  {
    GNUNET_break(0);
    return;
  }

  end = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
      &shutdown_task, NULL );

}

/**
 * Main function that will be run by the scheduler.
 *
 * @param cls closure
 * @param args remaining command-line arguments
 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
 * @param mycfg configuration
 */
static void
run (void *cls, char * const *args, const char *cfgfile,
    const struct GNUNET_CONFIGURATION_Handle *mycfg)
{
  cfg = (struct GNUNET_CONFIGURATION_Handle *) mycfg;
  if (test_configuration)
  {
    do_test_configuration (cfg);
    return;
  }
  GNUNET_CLIENT_service_test ("transport", cfg, GNUNET_TIME_UNIT_SECONDS,
      &testservice_task, (void *) cfg);
}

int
main (int argc, char * const *argv)
{
  int res;
  static const struct GNUNET_GETOPT_CommandLineOption options[] =
      {
          { 'a', "all", NULL,
              gettext_noop ("print information for all peers (instead of only connected peers )"),
              0, &GNUNET_GETOPT_set_one, &iterate_all },
          { 'b', "benchmark", NULL,
              gettext_noop ("measure how fast we are receiving data from all peers (until CTRL-C)"),
              0, &GNUNET_GETOPT_set_one, &benchmark_receive }, { 'C', "connect",
              NULL, gettext_noop ("connect to a peer"), 0,
              &GNUNET_GETOPT_set_one, &try_connect },
          { 'd', "validation", NULL,
              gettext_noop ("print information for all pending validations "),
              0, &GNUNET_GETOPT_set_one, &iterate_validation },
          { 'f', "monitorvalidation", NULL,
              gettext_noop ("print information for all pending validations continously"),
              0, &GNUNET_GETOPT_set_one, &monitor_validation },
          { 'i', "information", NULL,
              gettext_noop ("provide information about all current connections (once)"),
              0, &GNUNET_GETOPT_set_one, &iterate_connections },
          { 'm', "monitor", NULL,
              gettext_noop ("provide information about all current connections (continuously)"),
              0, &GNUNET_GETOPT_set_one, &monitor_connections },
          { 'e', "events", NULL,
              gettext_noop ("provide information about all connects and disconnect events (continuously)"),
              0, &GNUNET_GETOPT_set_one, &monitor_connects }, { 'n', "numeric",
              NULL, gettext_noop ("do not resolve hostnames"), 0,
              &GNUNET_GETOPT_set_one, &numeric }, { 'p', "peer", "PEER",
              gettext_noop ("peer identity"), 1, &GNUNET_GETOPT_set_string,
              &cpid }, { 's', "send", NULL, gettext_noop
          ("send data for benchmarking to the other peer (until CTRL-C)"), 0,
              &GNUNET_GETOPT_set_one, &benchmark_send },
          { 't', "test", NULL,
              gettext_noop ("test transport configuration (involves external server)"),
              0, &GNUNET_GETOPT_set_one, &test_configuration },
              GNUNET_GETOPT_OPTION_VERBOSE (&verbosity),
              GNUNET_GETOPT_OPTION_END };

  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
    return 2;

  res = GNUNET_PROGRAM_run (argc, argv, "gnunet-transport", gettext_noop
  ("Direct access to transport service."), options, &run, NULL );
  GNUNET_free((void * ) argv);
  if (GNUNET_OK == res)
    return ret;
  return 1;
}

/* end of gnunet-transport.c */