summaryrefslogtreecommitdiff
path: root/src/mesh/test_mesh_small.c
blob: 5a83994f3bcd6d96619e89c848b45e0bd7570212 (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
/*
     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 mesh/test_mesh_small.c
 *
 * @brief Test for the mesh service: retransmission of traffic.
 */
#include "platform.h"
#include "gnunet_testing_lib.h"
#include "gnunet_mesh_service.h"

#define VERBOSE GNUNET_YES
#define REMOVE_DIR GNUNET_YES

struct MeshPeer
{
  struct MeshPeer *prev;

  struct MeshPeer *next;

  struct GNUNET_TESTING_Daemon *daemon;

  struct GNUNET_MESH_Handle *mesh_handle;
};


struct StatsContext
{
  unsigned long long total_mesh_bytes;
};


/**
 * How long until we give up on connecting the peers?
 */
#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1500)

/**
 * Time to wait for stuff that should be rather fast
 */
#define SHORT_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 90)

/**
 * DIFFERENT TESTS TO RUN
 */
#define SETUP 0
#define UNICAST 1
#define MULTICAST 2

/**
 * Which test are we running?
 */
static int test;

/**
 * How many events have happened
 */
static int ok;

static int peers_in_tunnel;

static int peers_responded;

/**
 * Be verbose
 */
static int verbose;

/**
 * Total number of peers in the test.
 */
static unsigned long long num_peers;

/**
 * Global configuration file
 */
static struct GNUNET_CONFIGURATION_Handle *testing_cfg;

/**
 * Total number of currently running peers.
 */
static unsigned long long peers_running;

/**
 * Total number of connections in the whole network.
 */
static unsigned int total_connections;

/**
 * The currently running peer group.
 */
static struct GNUNET_TESTING_PeerGroup *pg;

/**
 * File to report results to.
 */
static struct GNUNET_DISK_FileHandle *output_file;

/**
 * File to log connection info, statistics to.
 */
static struct GNUNET_DISK_FileHandle *data_file;

/**
 * How many data points to capture before triggering next round?
 */
static struct GNUNET_TIME_Relative wait_time;

/**
 * Task called to disconnect peers.
 */
static GNUNET_SCHEDULER_TaskIdentifier disconnect_task;

/**
 * Task To perform tests
 */
static GNUNET_SCHEDULER_TaskIdentifier test_task;

/**
 * Task called to shutdown test.
 */
static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;

static char *topology_file;

static struct GNUNET_TESTING_Daemon *d1;

static GNUNET_PEER_Id pid1;

static struct GNUNET_TESTING_Daemon *d2;

static struct GNUNET_TESTING_Daemon *d3;

static struct GNUNET_MESH_Handle *h1;

static struct GNUNET_MESH_Handle *h2;

static struct GNUNET_MESH_Handle *h3;

static struct GNUNET_MESH_Tunnel *t;

static struct GNUNET_MESH_Tunnel *incoming_t;

static struct GNUNET_MESH_Tunnel *incoming_t2;

static uint16_t *mesh_peers;

/**
 * Check whether peers successfully shut down.
 */
static void
shutdown_callback (void *cls, const char *emsg)
{
  if (emsg != NULL)
  {
#if VERBOSE
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Shutdown of peers failed!\n");
#endif
    ok--;
  }
  else
  {
#if VERBOSE
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: All peers successfully shut down!\n");
#endif
  }
}


static void
shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
#if VERBOSE
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Ending test.\n");
#endif

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

  if (data_file != NULL)
    GNUNET_DISK_file_close (data_file);
  GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
  GNUNET_CONFIGURATION_destroy (testing_cfg);
}


static void
disconnect_mesh_peers (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: disconnecting mesh service of peers\n");
  disconnect_task = GNUNET_SCHEDULER_NO_TASK;
  GNUNET_MESH_disconnect (h1);
  GNUNET_MESH_disconnect (h2);
  if (test == MULTICAST)
    GNUNET_MESH_disconnect (h3);
  if (GNUNET_SCHEDULER_NO_TASK != shutdown_handle)
  {
    GNUNET_SCHEDULER_cancel (shutdown_handle);
    shutdown_handle = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
  }
}


/**
 * Transmit ready callback
 */
size_t
tmt_rdy (void *cls, size_t size, void *buf)
{
  struct GNUNET_MessageHeader *msg = buf;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test:  tmt_rdy called\n");
  if (size < sizeof (struct GNUNET_MessageHeader) || NULL == buf)
    return 0;
  msg->size = htons (sizeof (struct GNUNET_MessageHeader));
  msg->type = htons ((long) cls);
  return sizeof (struct GNUNET_MessageHeader);
}


/**
 * Function is called whenever a message is received.
 *
 * @param cls closure (set from GNUNET_MESH_connect)
 * @param tunnel connection to the other end
 * @param tunnel_ctx place to store local state associated with the tunnel
 * @param sender who sent the message
 * @param message the actual message
 * @param atsi performance data for the connection
 * @return GNUNET_OK to keep the connection open,
 *         GNUNET_SYSERR to close it (signal serious error)
 */
int
data_callback (void *cls, struct GNUNET_MESH_Tunnel *tunnel, void **tunnel_ctx,
               const struct GNUNET_PeerIdentity *sender,
               const struct GNUNET_MessageHeader *message,
               const struct GNUNET_ATS_Information *atsi)
{
  long client = (long) cls;

  switch (client)
  {
  case 1L:
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Origin client got a response!\n");
    ok++;
    peers_responded++;
    if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
    {
      GNUNET_SCHEDULER_cancel (disconnect_task);
      disconnect_task =
          GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers,
                                        NULL);
    }
    if (test == MULTICAST && peers_responded < 2)
      return GNUNET_OK;
    GNUNET_MESH_tunnel_destroy (tunnel);
    break;
  case 2L:
  case 3L:
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Destination client %u got a message.\n",
                client);
    ok++;
    GNUNET_MESH_notify_transmit_ready (tunnel, GNUNET_NO, 0,
                                       GNUNET_TIME_UNIT_FOREVER_REL, sender,
                                       sizeof (struct GNUNET_MessageHeader),
                                       &tmt_rdy, (void *) 1L);
    if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
    {
      GNUNET_SCHEDULER_cancel (disconnect_task);
      disconnect_task =
          GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers,
                                        NULL);
    }
    break;
  default:
    break;
  }
  return GNUNET_OK;
}


/**
 * Handlers, for diverse services
 */
static struct GNUNET_MESH_MessageHandler handlers[] = {
  {&data_callback, 1, sizeof (struct GNUNET_MessageHeader)},
  {NULL, 0, 0}
};


/**
 * Method called whenever another peer has added us to a tunnel
 * the other peer initiated.
 *
 * @param cls closure
 * @param tunnel new handle to the tunnel
 * @param initiator peer that started the tunnel
 * @param atsi performance information for the tunnel
 * @return initial tunnel context for the tunnel
 *         (can be NULL -- that's not an error)
 */
static void *
incoming_tunnel (void *cls, struct GNUNET_MESH_Tunnel *tunnel,
                 const struct GNUNET_PeerIdentity *initiator,
                 const struct GNUNET_ATS_Information *atsi)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Incoming tunnel from %s to peer %d\n",
              GNUNET_i2s (initiator), (long) cls);
  ok++;
  if ((long) cls == 1L)
    incoming_t = tunnel;
  else
    incoming_t2 = tunnel;
  if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
  {
    GNUNET_SCHEDULER_cancel (disconnect_task);
    disconnect_task =
        GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers, NULL);
  }
  return NULL;
}

/**
 * Function called whenever an inbound tunnel is destroyed.  Should clean up
 * any associated state.
 *
 * @param cls closure (set from GNUNET_MESH_connect)
 * @param tunnel connection to the other end (henceforth invalid)
 * @param tunnel_ctx place where local state associated
 *                   with the tunnel is stored
 */
static void
tunnel_cleaner (void *cls, const struct GNUNET_MESH_Tunnel *tunnel,
                void *tunnel_ctx)
{
  long i = (long) cls;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Incoming tunnel disconnected at peer %d\n",
              i);
  if (2L == i)
    ok++;
  else if (3L == i)
    ok++;
  else
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Unknown peer! %d\n", i);
  peers_in_tunnel--;
  if (peers_in_tunnel > 0)
    return;

  if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
  {
    GNUNET_SCHEDULER_cancel (disconnect_task);
    disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers, NULL);
  }

  return;
}


/**
 * Method called whenever a tunnel falls apart.
 *
 * @param cls closure
 * @param peer peer identity the tunnel stopped working with
 */
static void
dh (void *cls, const struct GNUNET_PeerIdentity *peer)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: peer %s disconnected\n",
              GNUNET_i2s (peer));
  return;
}


/**
 * Method called whenever a peer connects to a tunnel.
 *
 * @param cls closure
 * @param peer peer identity the tunnel was created to, NULL on timeout
 * @param atsi performance data for the connection
 */
static void
ch (void *cls, const struct GNUNET_PeerIdentity *peer,
    const struct GNUNET_ATS_Information *atsi)
{
  struct GNUNET_PeerIdentity *dest;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: peer %s connected\n", GNUNET_i2s (peer));

  if (0 == memcmp (&d2->id, peer, sizeof (d2->id)) && (long) cls == 1L)
    ok++;
  if (test == MULTICAST && 0 == memcmp (&d3->id, peer, sizeof (d3->id)) &&
      (long) cls == 1L)
    ok++;
  switch (test)
  {
  case UNICAST:
    dest = &d2->id;
    break;
  case MULTICAST:
    peers_in_tunnel++;
    if (peers_in_tunnel < 2)
      return;
    dest = NULL;
    break;
  default:
    return;
  }
  if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
  {
    GNUNET_SCHEDULER_cancel (disconnect_task);
    disconnect_task =
        GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers, NULL);
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Sending data...\n");
    peers_responded = 0;
    GNUNET_MESH_notify_transmit_ready (t, GNUNET_NO, 0,
                                       GNUNET_TIME_UNIT_FOREVER_REL, dest,
                                       sizeof (struct GNUNET_MessageHeader),
                                       &tmt_rdy, (void *) 1L);
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Disconnect already run?\n");
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Aborting...\n");
  }
  return;
}


static void
do_test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: test_task\n");
  if (test == MULTICAST)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: add peer 3\n");
    GNUNET_MESH_peer_request_connect_add (t, &d3->id);
  }
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: add peer 2\n");
  GNUNET_MESH_peer_request_connect_add (t, &d2->id);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: schedule timeout in 90s\n");
  if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
  {
    GNUNET_SCHEDULER_cancel (disconnect_task);
    disconnect_task =
        GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers, NULL);
  }
}


/**
 * Prototype of a callback function indicating that two peers
 * are currently connected.
 *
 * @param cls closure
 * @param first peer id for first daemon
 * @param second peer id for the second daemon
 * @param distance distance between the connected peers
 * @param emsg error message (NULL on success)
 */
void
topo_cb (void *cls, const struct GNUNET_PeerIdentity *first,
         const struct GNUNET_PeerIdentity *second, const char *emsg)
{
  GNUNET_PEER_Id p1;
  GNUNET_PEER_Id p2;
  struct GNUNET_PeerIdentity id;

  GNUNET_PEER_resolve (1, &id);
  p1 = GNUNET_PEER_search (first);
  if (p1 == pid1)
  {
    p2 = GNUNET_PEER_search (second);
    if (p2 == 0 || p2 > num_peers)
    {
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "***************** test: %s is UNKNOWN!? (%u)\n",
                  GNUNET_i2s (second), p2);
      return;
    }
    mesh_peers[p2]++;
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: %s IS a neighbor\n",
                GNUNET_i2s (second));
    return;
  }
  p1 = GNUNET_PEER_search (second);
  if (p1 == pid1)
  {
    p2 = GNUNET_PEER_search (first);
    if (p2 == 0 || p2 > num_peers)
    {
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "***************** test: %s is UNKNOWN!? (%u)\n",
                  GNUNET_i2s (first), p2);
      return;
    }
    mesh_peers[p2]++;
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: %s IS a neighbor\n",
                GNUNET_i2s (first));
    return;
  }
}

/**
 * connect_mesh_service: connect to the mesh service of one of the peers
 *
 */
static void
connect_mesh_service (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  GNUNET_MESH_ApplicationType app;
  unsigned int i;
  struct GNUNET_PeerIdentity id;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: connect_mesh_service\n");

  for (i = 1; i <= num_peers; i++)
  {
    GNUNET_PEER_resolve (i, &id);
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test:   peer %s has %u conns to d1\n",
                GNUNET_i2s (&id), mesh_peers[i]);
    if (mesh_peers[i] == 0)
      break;
  }
  GNUNET_assert (i < num_peers);
  d2 = GNUNET_TESTING_daemon_get_by_id (pg, &id);
  if (test == MULTICAST)
  {
    for (i++; i <= num_peers; i++)
    {
      GNUNET_PEER_resolve (i, &id);
      GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                  "***************** test:   peer %s has %u conns to d1\n",
                  GNUNET_i2s (&id), mesh_peers[i]);
      if (mesh_peers[i] == 0)
        break;
    }
    GNUNET_assert (i < num_peers);
    d3 = GNUNET_TESTING_daemon_get_by_id (pg, &id);
  }
  app = (GNUNET_MESH_ApplicationType) 0;

#if VERBOSE
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: connecting to mesh service of peer %s (%u)\n",
              GNUNET_i2s (&d1->id), mesh_peers[0]);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: connecting to mesh service of peer %s (%u)\n",
              GNUNET_i2s (&d2->id), i);
  if (test == MULTICAST)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: connecting to mesh service of peer %s (%u)\n",
                GNUNET_i2s (&d3->id), i);
  }
#endif
  h1 = GNUNET_MESH_connect (d1->cfg, 10, (void *) 1L, NULL, &tunnel_cleaner,
                            handlers, &app);
  h2 = GNUNET_MESH_connect (d2->cfg, 10, (void *) 2L, &incoming_tunnel,
                            &tunnel_cleaner, handlers, &app);
  if (test == MULTICAST)
  {
    h3 = GNUNET_MESH_connect (d3->cfg, 10, (void *) 3L, &incoming_tunnel,
                              &tunnel_cleaner, handlers, &app);
  }
  t = GNUNET_MESH_tunnel_create (h1, NULL, &ch, &dh, (void *) 1L);
  peers_in_tunnel = 0;
  test_task =
      GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
                                    (GNUNET_TIME_UNIT_SECONDS, 6), &do_test,
                                    NULL);
}



/**
 * peergroup_ready: start test when all peers are connected
 * @param cls closure
 * @param emsg error message
 */
static void
peergroup_ready (void *cls, const char *emsg)
{
  char *buf;
  int buf_len;
  unsigned int i;

  if (emsg != NULL)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Peergroup callback called with error, aborting test!\n");
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Error from testing: `%s'\n", emsg);
    ok--;
    GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
    return;
  }
#if VERBOSE
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "************************************************************\n");
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Peer Group started successfully!\n");
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Have %u connections\n",
              total_connections);
#endif

  if (data_file != NULL)
  {
    buf = NULL;
    buf_len = GNUNET_asprintf (&buf, "CONNECTIONS_0: %u\n", total_connections);
    if (buf_len > 0)
      GNUNET_DISK_file_write (data_file, buf, buf_len);
    GNUNET_free (buf);
  }
  peers_running = GNUNET_TESTING_daemons_running (pg);
  for (i = 0; i < num_peers; i++)
  {
    GNUNET_PEER_Id peer_id;

    d1 = GNUNET_TESTING_daemon_get (pg, i);
    peer_id = GNUNET_PEER_intern (&d1->id);
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test:   %u: %s\n",
                peer_id, GNUNET_i2s (&d1->id));
  }
  d1 = GNUNET_TESTING_daemon_get (pg, 0);
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Peer looking: %s\n",
              GNUNET_i2s (&d1->id));
  pid1 = GNUNET_PEER_intern (&d1->id);
  mesh_peers[pid1] = 100;
  GNUNET_TESTING_get_topology (pg, &topo_cb, NULL);

  GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
                                (GNUNET_TIME_UNIT_SECONDS, 4),
                                &connect_mesh_service, NULL);
  disconnect_task =
      GNUNET_SCHEDULER_add_delayed (wait_time, &disconnect_mesh_peers, NULL);

}


/**
 * Function that will be called whenever two daemons are connected by
 * the testing library.
 *
 * @param cls closure
 * @param first peer id for first daemon
 * @param second peer id for the second daemon
 * @param distance distance between the connected peers
 * @param first_cfg config for the first daemon
 * @param second_cfg config for the second daemon
 * @param first_daemon handle for the first daemon
 * @param second_daemon handle for the second daemon
 * @param emsg error message (NULL on success)
 */
static void
connect_cb (void *cls, const struct GNUNET_PeerIdentity *first,
            const struct GNUNET_PeerIdentity *second, uint32_t distance,
            const struct GNUNET_CONFIGURATION_Handle *first_cfg,
            const struct GNUNET_CONFIGURATION_Handle *second_cfg,
            struct GNUNET_TESTING_Daemon *first_daemon,
            struct GNUNET_TESTING_Daemon *second_daemon, const char *emsg)
{
  if (emsg == NULL)
  {
    total_connections++;
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "***************** test: Problem with new connection (%s)\n",
                emsg);
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test:   (%s)\n",
                GNUNET_i2s (first));
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test:   (%s)\n",
                GNUNET_i2s (second));
  }

}


/**
 * run: load configuration options and schedule test to run (start peergroup)
 * @param cls closure
 * @param args argv
 * @param cfgfile configuration file name (can be NULL)
 * @param cfg configuration handle
 */
static void
run (void *cls, char *const *args, const char *cfgfile,
     const struct GNUNET_CONFIGURATION_Handle *cfg)
{
  char *temp_str;
  struct GNUNET_TESTING_Host *hosts;
  char *data_filename;

  ok = 0;
  testing_cfg = GNUNET_CONFIGURATION_dup (cfg);

  GNUNET_log_setup ("test_mesh_small",
#if VERBOSE
                    "DEBUG",
#else
                    "WARNING",
#endif
                    NULL);

#if VERBOSE
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "***************** test: Starting daemons.\n");
  GNUNET_CONFIGURATION_set_value_string (testing_cfg, "testing",
                                         "use_progressbars", "YES");
#endif

  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_number (testing_cfg, "testing",
                                             "num_peers", &num_peers))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Option TESTING:NUM_PEERS is required!\n");
    return;
  }

  mesh_peers = GNUNET_malloc (sizeof (uint16_t) * (num_peers + 1));

  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_time (testing_cfg, "test_mesh_small",
					   "WAIT_TIME", &wait_time))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Option test_mesh_small:wait_time is required!\n");
    return;
  }

  if (GNUNET_OK !=
      GNUNET_CONFIGURATION_get_value_string (testing_cfg, "testing",
                                             "topology_output_file",
                                             &topology_file))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
                "Option test_mesh_small:topology_output_file is required!\n");
    return;
  }

  if (GNUNET_OK ==
      GNUNET_CONFIGURATION_get_value_string (testing_cfg, "test_mesh_small",
                                             "data_output_file",
                                             &data_filename))
  {
    data_file =
        GNUNET_DISK_file_open (data_filename,
                               GNUNET_DISK_OPEN_READWRITE |
                               GNUNET_DISK_OPEN_CREATE,
                               GNUNET_DISK_PERM_USER_READ |
                               GNUNET_DISK_PERM_USER_WRITE);
    if (data_file == NULL)
    {
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Failed to open %s for output!\n",
                  data_filename);
      GNUNET_free (data_filename);
    }
  }

  if (GNUNET_YES ==
      GNUNET_CONFIGURATION_get_value_string (cfg, "test_mesh_small",
                                             "output_file", &temp_str))
  {
    output_file =
        GNUNET_DISK_file_open (temp_str,
                               GNUNET_DISK_OPEN_READWRITE |
                               GNUNET_DISK_OPEN_CREATE,
                               GNUNET_DISK_PERM_USER_READ |
                               GNUNET_DISK_PERM_USER_WRITE);
    if (output_file == NULL)
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Failed to open %s for output!\n",
                  temp_str);
  }
  GNUNET_free_non_null (temp_str);

  hosts = GNUNET_TESTING_hosts_load (testing_cfg);

  pg = GNUNET_TESTING_peergroup_start (testing_cfg, num_peers, TIMEOUT,
                                       &connect_cb, &peergroup_ready, NULL,
                                       hosts);
  GNUNET_assert (pg != NULL);
  shutdown_handle =
      GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_get_forever (),
                                    &shutdown_task, NULL);
}



/**
 * test_mesh_small command line options
 */
static struct GNUNET_GETOPT_CommandLineOption options[] = {
  {'V', "verbose", NULL,
   gettext_noop ("be verbose (print progress information)"),
   0, &GNUNET_GETOPT_set_one, &verbose},
  GNUNET_GETOPT_OPTION_END
};


/**
 * Main: start test
 */
int
main (int argc, char *argv[])
{
  char *const argv2[] = {
    argv[0],
    "-c",
    "test_mesh_small.conf",
#if VERBOSE
    "-L",
    "DEBUG",
#endif
    NULL
  };

  /* Each peer is supposed to generate the following callbacks:
   * 1 incoming tunnel (@dest)
   * 1 connected peer (@orig)
   * 1 received data packet (@dest)
   * 1 received data packet (@orig)
   * 1 received tunnel destroy (@dest)
   * _________________________________
   * 5 x ok expected per peer
   */
  int ok_goal;

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Start\n");
  if (strstr (argv[0], "test_mesh_small_unicast") != NULL)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: UNICAST\n");
    test = UNICAST;
    ok_goal = 5;
  }
  else if (strstr (argv[0], "test_mesh_small_multicast") != NULL)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: MULTICAST\n");
    test = MULTICAST;
    ok_goal = 10;
  }
  else
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: UNKNOWN\n");
    test = SETUP;
    ok_goal = 0;
  }

  GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1, argv2,
                      "test_mesh_small",
                      gettext_noop ("Test mesh in a small network."), options,
                      &run, NULL);
#if REMOVE_DIR
  GNUNET_DISK_directory_remove ("/tmp/test_mesh_small");
#endif
  if (ok_goal > ok)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "***************** test: FAILED! (%d/%d)\n", ok, ok_goal);
    return 1;
  }
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: success\n");
  return 0;
}

/* end of test_mesh_small.c */