src/mesh/test_mesh_small.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2011 Christian Grothoff (and other contributing authors)
   4
   5      GNUnet is free software; you can redistribute it and/or modify
   6      it under the terms of the GNU General Public License as published
   7      by the Free Software Foundation; either version 3, or (at your
   8      option) any later version.
   9
  10      GNUnet is distributed in the hope that it will be useful, but
  11      WITHOUT ANY WARRANTY; without even the implied warranty of
  12      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13      General Public License for more details.
  14
  15      You should have received a copy of the GNU General Public License
  16      along with GNUnet; see the file COPYING.  If not, write to the
  17      Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18      Boston, MA 02111-1307, USA.
  19 */
  20 /**
  21  * @file mesh/test_mesh_small.c
  22  *
  23  * @brief Test for the mesh service: retransmission of traffic.
  24  */
  25 #include "platform.h"
  26 #include "gnunet_testing_lib.h"
  27 #include "gnunet_mesh_service_new.h"
  28
  29 #define VERBOSE GNUNET_YES
  30 #define REMOVE_DIR GNUNET_YES
  31
  32 struct MeshPeer
  33 {
  34   struct MeshPeer *prev;
  35
  36   struct MeshPeer *next;
  37
  38   struct GNUNET_TESTING_Daemon *daemon;
  39
  40   struct GNUNET_MESH_Handle *mesh_handle;
  41 };
  42
  43
  44 struct StatsContext
  45 {
  46   unsigned long long total_mesh_bytes;
  47 };
  48
  49
  50 /**
  51  * How long until we give up on connecting the peers?
  52  */
  53 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1500)
  54
  55 /**
  56  * Time to wait for stuff that should be rather fast
  57  */
  58 #define SHORT_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30)
  59
  60 /**
  61  * DIFFERENT TESTS TO RUN
  62  */
  63 #define SETUP 0
  64 #define UNICAST 1
  65 #define MULTICAST 2
  66
  67 /**
  68  * Which test are we running?
  69  */
  70 static int test;
  71
  72 /**
  73  * How many events have happened
  74  */
  75 static int ok;
  76
  77 static int peers_in_tunnel;
  78
  79 static int peers_responded;
  80
  81 /**
  82  * Be verbose
  83  */
  84 static int verbose;
  85
  86 /**
  87  * Total number of peers in the test.
  88  */
  89 static unsigned long long num_peers;
  90
  91 /**
  92  * Global configuration file
  93  */
  94 static struct GNUNET_CONFIGURATION_Handle *testing_cfg;
  95
  96 /**
  97  * Total number of currently running peers.
  98  */
  99 static unsigned long long peers_running;
 100
 101 /**
 102  * Total number of connections in the whole network.
 103  */
 104 static unsigned int total_connections;
 105
 106 /**
 107  * The currently running peer group.
 108  */
 109 static struct GNUNET_TESTING_PeerGroup *pg;
 110
 111 /**
 112  * File to report results to.
 113  */
 114 static struct GNUNET_DISK_FileHandle *output_file;
 115
 116 /**
 117  * File to log connection info, statistics to.
 118  */
 119 static struct GNUNET_DISK_FileHandle *data_file;
 120
 121 /**
 122  * How many data points to capture before triggering next round?
 123  */
 124 static struct GNUNET_TIME_Relative wait_time;
 125
 126 /**
 127  * Task called to disconnect peers.
 128  */
 129 static GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
 130
 131 /**
 132  * Task To perform tests
 133  */
 134 static GNUNET_SCHEDULER_TaskIdentifier test_task;
 135
 136 /**
 137  * Task called to shutdown test.
 138  */
 139 static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;
 140
 141 static char *topology_file;
 142
 143 static struct GNUNET_TESTING_Daemon *d1;
 144
 145 static GNUNET_PEER_Id pid1;
 146
 147 static struct GNUNET_TESTING_Daemon *d2;
 148
 149 static struct GNUNET_TESTING_Daemon *d3;
 150
 151 static struct GNUNET_MESH_Handle *h1;
 152
 153 static struct GNUNET_MESH_Handle *h2;
 154
 155 static struct GNUNET_MESH_Handle *h3;
 156
 157 static struct GNUNET_MESH_Tunnel *t;
 158
 159 static struct GNUNET_MESH_Tunnel *incoming_t;
 160
 161 static struct GNUNET_MESH_Tunnel *incoming_t2;
 162
 163 static uint16_t *mesh_peers;
 164
 165 /**
 166  * Check whether peers successfully shut down.
 167  */
 168 static void
 169 shutdown_callback (void *cls, const char *emsg)
 170 {
 171   if (emsg != NULL)
 172   {
 173 #if VERBOSE
 174     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Shutdown of peers failed!\n");
 175 #endif
 176     ok--;
 177   }
 178   else
 179   {
 180 #if VERBOSE
 181     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: All peers successfully shut down!\n");
 182 #endif
 183   }
 184 }
 185
 186
 187 static void
 188 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 189 {
 190 #if VERBOSE
 191   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Ending test.\n");
 192 #endif
 193
 194   if (disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 195   {
 196     GNUNET_SCHEDULER_cancel (disconnect_task);
 197     disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 198   }
 199
 200   if (data_file != NULL)
 201     GNUNET_DISK_file_close (data_file);
 202   GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
 203   GNUNET_CONFIGURATION_destroy (testing_cfg);
 204 }
 205
 206
 207 static void
 208 disconnect_mesh_peers (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 209 {
 210   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 211               "***************** test: disconnecting mesh service of peers\n");
 212   disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 213   GNUNET_MESH_disconnect(h1);
 214   GNUNET_MESH_disconnect(h2);
 215   if (test == MULTICAST)
 216     GNUNET_MESH_disconnect(h3);
 217   if (GNUNET_SCHEDULER_NO_TASK != shutdown_handle)
 218   {
 219     GNUNET_SCHEDULER_cancel (shutdown_handle);
 220     shutdown_handle = GNUNET_SCHEDULER_add_now(&shutdown_task, NULL);
 221   }
 222 }
 223
 224
 225 /**
 226  * Transmit ready callback
 227  */
 228 size_t
 229 tmt_rdy (void *cls, size_t size, void *buf)
 230 {
 231   struct GNUNET_MessageHeader *msg = buf;
 232
 233   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test:  tmt_rdy called\n");
 234   if (size < sizeof(struct GNUNET_MessageHeader) || NULL == buf)
 235     return 0;
 236   msg->size = htons (sizeof(struct GNUNET_MessageHeader));
 237   msg->type = htons ((long) cls);
 238   return sizeof(struct GNUNET_MessageHeader);
 239 }
 240
 241
 242 /**
 243  * Function is called whenever a message is received.
 244  *
 245  * @param cls closure (set from GNUNET_MESH_connect)
 246  * @param tunnel connection to the other end
 247  * @param tunnel_ctx place to store local state associated with the tunnel
 248  * @param sender who sent the message
 249  * @param message the actual message
 250  * @param atsi performance data for the connection
 251  * @return GNUNET_OK to keep the connection open,
 252  *         GNUNET_SYSERR to close it (signal serious error)
 253  */
 254 int
 255 data_callback (void *cls,
 256           struct GNUNET_MESH_Tunnel * tunnel,
 257           void **tunnel_ctx,
 258           const struct GNUNET_PeerIdentity *sender,
 259           const struct GNUNET_MessageHeader *message,
 260           const struct GNUNET_ATS_Information *atsi)
 261 {
 262   long client = (long) cls;
 263
 264   switch (client)
 265   {
 266     case 1L:
 267       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 268                   "***************** test: Origin client got a response!\n");
 269       ok++;
 270       peers_responded++;
 271       if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 272       {
 273         GNUNET_SCHEDULER_cancel (disconnect_task);
 274         disconnect_task = GNUNET_SCHEDULER_add_delayed(SHORT_TIME,
 275                                                      &disconnect_mesh_peers,
 276                                                      NULL);
 277       }
 278       if (test == MULTICAST && peers_responded < 2)
 279         return GNUNET_OK;
 280       GNUNET_MESH_tunnel_destroy (tunnel);
 281       break;
 282     case 2L:
 283     case 3L:
 284       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 285                   "***************** test: Destination client %u got a message.\n",
 286                   client);
 287       ok++;
 288       GNUNET_MESH_notify_transmit_ready(tunnel,
 289                                         GNUNET_NO,
 290                                         0,
 291                                         GNUNET_TIME_UNIT_FOREVER_REL,
 292                                         sender,
 293                                         sizeof(struct GNUNET_MessageHeader),
 294                                         &tmt_rdy,
 295                                         (void *) 1L);
 296       if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 297       {
 298         GNUNET_SCHEDULER_cancel (disconnect_task);
 299         disconnect_task = GNUNET_SCHEDULER_add_delayed(SHORT_TIME,
 300                                                       &disconnect_mesh_peers,
 301                                                       NULL);
 302       }
 303       break;
 304     default:
 305       break;
 306   }
 307   return GNUNET_OK;
 308 }
 309
 310
 311 /**
 312  * Handlers, for diverse services
 313  */
 314 static struct GNUNET_MESH_MessageHandler handlers[] = {
 315   {&data_callback, 1, sizeof(struct GNUNET_MessageHeader)},
 316   {NULL, 0, 0}
 317 };
 318
 319
 320 /**
 321  * Method called whenever another peer has added us to a tunnel
 322  * the other peer initiated.
 323  *
 324  * @param cls closure
 325  * @param tunnel new handle to the tunnel
 326  * @param initiator peer that started the tunnel
 327  * @param atsi performance information for the tunnel
 328  * @return initial tunnel context for the tunnel
 329  *         (can be NULL -- that's not an error)
 330  */
 331 static void *
 332 incoming_tunnel (void *cls,
 333                  struct GNUNET_MESH_Tunnel * tunnel,
 334                  const struct GNUNET_PeerIdentity * initiator,
 335                  const struct GNUNET_ATS_Information * atsi)
 336 {
 337   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 338               "***************** test: Incoming tunnel from %s to peer %d\n",
 339               GNUNET_i2s(initiator),
 340               (long) cls);
 341   ok++;
 342   if ((long) cls == 1L)
 343     incoming_t = tunnel;
 344   else
 345     incoming_t2 = tunnel;
 346   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 347   {
 348     GNUNET_SCHEDULER_cancel (disconnect_task);
 349     disconnect_task = GNUNET_SCHEDULER_add_delayed(SHORT_TIME,
 350                                                   &disconnect_mesh_peers,
 351                                                   NULL);
 352   }
 353   return NULL;
 354 }
 355
 356 /**
 357  * Function called whenever an inbound tunnel is destroyed.  Should clean up
 358  * any associated state.
 359  *
 360  * @param cls closure (set from GNUNET_MESH_connect)
 361  * @param tunnel connection to the other end (henceforth invalid)
 362  * @param tunnel_ctx place where local state associated
 363  *                   with the tunnel is stored
 364  */
 365 static void
 366 tunnel_cleaner (void *cls, const struct GNUNET_MESH_Tunnel *tunnel,
 367                 void *tunnel_ctx)
 368 {
 369   long i = (long) cls;
 370
 371   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 372               "***************** test: Incoming tunnel disconnected at peer %d\n",
 373               i);
 374   if (2L == i)
 375     ok++;
 376   else if (3L == i)
 377     ok++;
 378   else
 379     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 380               "***************** test: Unknown peer! %d\n",
 381               i);
 382   peers_in_tunnel--;
 383   if (peers_in_tunnel > 0)
 384     return;
 385
 386   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 387   {
 388     GNUNET_SCHEDULER_cancel (disconnect_task);
 389     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers, NULL);
 390   }
 391
 392   return;
 393 }
 394
 395
 396 /**
 397  * Method called whenever a tunnel falls apart.
 398  *
 399  * @param cls closure
 400  * @param peer peer identity the tunnel stopped working with
 401  */
 402 static void
 403 dh (void *cls, const struct GNUNET_PeerIdentity *peer)
 404 {
 405   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 406               "***************** test: peer %s disconnected\n",
 407               GNUNET_i2s(peer));
 408   return;
 409 }
 410
 411
 412 /**
 413  * Method called whenever a peer connects to a tunnel.
 414  *
 415  * @param cls closure
 416  * @param peer peer identity the tunnel was created to, NULL on timeout
 417  * @param atsi performance data for the connection
 418  */
 419 static void
 420 ch (void *cls, const struct GNUNET_PeerIdentity *peer,
 421     const struct GNUNET_ATS_Information *atsi)
 422 {
 423   struct GNUNET_PeerIdentity *dest;
 424
 425   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 426               "***************** test: peer %s connected\n",
 427               GNUNET_i2s(peer));
 428
 429   if (0 == memcmp(&d2->id, peer, sizeof(d2->id)) && (long) cls == 1L)
 430     ok++;
 431   if (test == MULTICAST &&
 432       0 == memcmp(&d3->id, peer, sizeof(d3->id)) &&
 433       (long) cls == 1L)
 434     ok++;
 435   switch (test)
 436   {
 437     case UNICAST:
 438       dest = &d2->id;
 439       break;
 440     case MULTICAST:
 441       peers_in_tunnel++;
 442       if (peers_in_tunnel < 2)
 443         return;
 444       dest = NULL;
 445       break;
 446     default:
 447       return;
 448   }
 449   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 450   {
 451     GNUNET_SCHEDULER_cancel (disconnect_task);
 452     disconnect_task = GNUNET_SCHEDULER_add_delayed(SHORT_TIME,
 453                                                     &disconnect_mesh_peers,
 454                                                     NULL);
 455     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 456                 "***************** test: Sending data...\n");
 457     peers_responded = 0;
 458     GNUNET_MESH_notify_transmit_ready(t,
 459                                       GNUNET_NO,
 460                                       0,
 461                                       GNUNET_TIME_UNIT_FOREVER_REL,
 462                                       dest,
 463                                       sizeof(struct GNUNET_MessageHeader),
 464                                       &tmt_rdy,
 465                                       (void *) 1L);
 466   }
 467   else
 468   {
 469     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Disconnect already run?\n");
 470     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Aborting...\n");
 471   }
 472   return;
 473 }
 474
 475
 476 static void
 477 do_test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 478 {
 479   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: test_task\n");
 480   if (test == MULTICAST)
 481   {
 482     GNUNET_MESH_peer_request_connect_add(t, &d3->id);
 483   }
 484   GNUNET_MESH_peer_request_connect_add(t, &d2->id);
 485   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 486   {
 487     GNUNET_SCHEDULER_cancel (disconnect_task);
 488     disconnect_task = GNUNET_SCHEDULER_add_delayed(
 489             GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30),
 490             &disconnect_mesh_peers,
 491             NULL);
 492   }
 493 }
 494
 495
 496 /**
 497  * Prototype of a callback function indicating that two peers
 498  * are currently connected.
 499  *
 500  * @param cls closure
 501  * @param first peer id for first daemon
 502  * @param second peer id for the second daemon
 503  * @param distance distance between the connected peers
 504  * @param emsg error message (NULL on success)
 505  */
 506 void
 507 topo_cb (void *cls,
 508          const struct GNUNET_PeerIdentity* first,
 509          const struct GNUNET_PeerIdentity* second,
 510          const char *emsg)
 511 {
 512   GNUNET_PEER_Id p1;
 513   GNUNET_PEER_Id p2;
 514   struct GNUNET_PeerIdentity id;
 515
 516   GNUNET_PEER_resolve(1, &id);
 517   p1 = GNUNET_PEER_search(first);
 518   if (p1 == pid1)
 519   {
 520     p2 = GNUNET_PEER_search(second);
 521     if (p2 == 0 || p2 > num_peers)
 522     {
 523       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 524                   "***************** test: %s is UNKNOWN!? (%u)\n",
 525                   GNUNET_i2s(second),
 526                   p2);
 527       return;
 528     }
 529     mesh_peers[p2]++;
 530     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 531                 "***************** test: %s IS a neighbor\n",
 532                 GNUNET_i2s(second));
 533     return;
 534   }
 535   p1 = GNUNET_PEER_search(second);
 536   if (p1 == pid1)
 537   {
 538     p2 = GNUNET_PEER_search(first);
 539     if (p2 == 0 || p2 > num_peers)
 540     {
 541       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 542                   "***************** test: %s is UNKNOWN!? (%u)\n",
 543                   GNUNET_i2s(first),
 544                   p2);
 545       return;
 546     }
 547     mesh_peers[p2]++;
 548     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 549                 "***************** test: %s IS a neighbor\n",
 550                 GNUNET_i2s(first));
 551     return;
 552   }
 553 }
 554
 555 /**
 556  * connect_mesh_service: connect to the mesh service of one of the peers
 557  *
 558  */
 559 static void
 560 connect_mesh_service (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 561 {
 562   GNUNET_MESH_ApplicationType app;
 563   unsigned int i;
 564   struct GNUNET_PeerIdentity id;
 565
 566   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: connect_mesh_service\n");
 567
 568   for (i = 1; i <= num_peers; i++)
 569   {
 570     GNUNET_PEER_resolve(i, &id);
 571     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 572               "***************** test:   peer %s has %u conns to d1\n",
 573               GNUNET_i2s (&id),
 574               mesh_peers[i]);
 575     if (mesh_peers[i] == 0)
 576       break;
 577   }
 578   GNUNET_assert (i < num_peers);
 579   d2 = GNUNET_TESTING_daemon_get_by_id (pg, &id);
 580   if (test == MULTICAST)
 581   {
 582     for (i++; i <= num_peers; i++)
 583     {
 584       GNUNET_PEER_resolve(i, &id);
 585       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 586                 "***************** test:   peer %s has %u conns to d1\n",
 587                 GNUNET_i2s (&id),
 588                 mesh_peers[i]);
 589       if (mesh_peers[i] == 0)
 590         break;
 591     }
 592     GNUNET_assert (i < num_peers);
 593     d3 = GNUNET_TESTING_daemon_get_by_id (pg, &id);
 594   }
 595   app = (GNUNET_MESH_ApplicationType) 0;
 596
 597 #if VERBOSE
 598   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 599               "***************** test: connecting to mesh service of peer %s (%u)\n",
 600               GNUNET_i2s (&d1->id),
 601               mesh_peers[0]);
 602   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 603               "***************** test: connecting to mesh service of peer %s (%u)\n",
 604               GNUNET_i2s (&d2->id),
 605               i);
 606   if (test == MULTICAST)
 607   {
 608     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 609                 "***************** test: connecting to mesh service of peer %s (%u)\n",
 610                 GNUNET_i2s (&d3->id),
 611                 i);
 612   }
 613 #endif
 614   h1 = GNUNET_MESH_connect (d1->cfg,
 615                             10,
 616                             (void *) 1L,
 617                             NULL,
 618                             &tunnel_cleaner,
 619                             handlers,
 620                             &app);
 621   h2 = GNUNET_MESH_connect (d2->cfg,
 622                             10,
 623                             (void *) 2L,
 624                             &incoming_tunnel,
 625                             &tunnel_cleaner,
 626                             handlers,
 627                             &app);
 628   if (test == MULTICAST)
 629   {
 630     h3 = GNUNET_MESH_connect (d3->cfg,
 631                               10,
 632                               (void *) 3L,
 633                               &incoming_tunnel,
 634                               &tunnel_cleaner,
 635                               handlers,
 636                               &app);
 637   }
 638   t = GNUNET_MESH_tunnel_create (h1, NULL, &ch, &dh, (void *) 1L);
 639   peers_in_tunnel = 0;
 640   test_task =
 641       GNUNET_SCHEDULER_add_delayed(
 642           GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 6),
 643           &do_test, NULL);
 644 }
 645
 646
 647
 648 /**
 649  * peergroup_ready: start test when all peers are connected
 650  * @param cls closure
 651  * @param emsg error message
 652  */
 653 static void
 654 peergroup_ready (void *cls, const char *emsg)
 655 {
 656   char *buf;
 657   int buf_len;
 658   unsigned int i;
 659
 660   if (emsg != NULL)
 661   {
 662     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 663                 "***************** test: Peergroup callback called with error, aborting test!\n");
 664     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 665                 "***************** test: Error from testing: `%s'\n", emsg);
 666     ok--;
 667     GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
 668     return;
 669   }
 670 #if VERBOSE
 671   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 672               "************************************************************\n");
 673   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 674               "***************** test: Peer Group started successfully!\n");
 675   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 676               "***************** test: Have %u connections\n",
 677               total_connections);
 678 #endif
 679
 680   if (data_file != NULL)
 681   {
 682     buf = NULL;
 683     buf_len = GNUNET_asprintf (&buf, "CONNECTIONS_0: %u\n", total_connections);
 684     if (buf_len > 0)
 685       GNUNET_DISK_file_write (data_file, buf, buf_len);
 686     GNUNET_free (buf);
 687   }
 688   peers_running = GNUNET_TESTING_daemons_running (pg);
 689   for (i = 0; i < num_peers; i++)
 690   {
 691     d1 = GNUNET_TESTING_daemon_get (pg, i);
 692     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 693                 "***************** test:   %u: %s\n",
 694                 GNUNET_PEER_intern(&d1->id),
 695                 GNUNET_i2s (&d1->id));
 696   }
 697   d1 = GNUNET_TESTING_daemon_get (pg, 0);
 698   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 699               "***************** test: Peer looking: %s\n",
 700               GNUNET_i2s (&d1->id));
 701   pid1 = GNUNET_PEER_intern(&d1->id);
 702   mesh_peers[pid1] = 100;
 703   GNUNET_TESTING_get_topology(pg, &topo_cb, NULL);
 704
 705   GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(
 706                                     GNUNET_TIME_UNIT_SECONDS,
 707                                     4),
 708                                 &connect_mesh_service,
 709                                 NULL);
 710   disconnect_task =
 711       GNUNET_SCHEDULER_add_delayed (wait_time, &disconnect_mesh_peers, NULL);
 712
 713 }
 714
 715
 716 /**
 717  * Function that will be called whenever two daemons are connected by
 718  * the testing library.
 719  *
 720  * @param cls closure
 721  * @param first peer id for first daemon
 722  * @param second peer id for the second daemon
 723  * @param distance distance between the connected peers
 724  * @param first_cfg config for the first daemon
 725  * @param second_cfg config for the second daemon
 726  * @param first_daemon handle for the first daemon
 727  * @param second_daemon handle for the second daemon
 728  * @param emsg error message (NULL on success)
 729  */
 730 static void
 731 connect_cb (void *cls, const struct GNUNET_PeerIdentity *first,
 732             const struct GNUNET_PeerIdentity *second, uint32_t distance,
 733             const struct GNUNET_CONFIGURATION_Handle *first_cfg,
 734             const struct GNUNET_CONFIGURATION_Handle *second_cfg,
 735             struct GNUNET_TESTING_Daemon *first_daemon,
 736             struct GNUNET_TESTING_Daemon *second_daemon, const char *emsg)
 737 {
 738   if (emsg == NULL)
 739   {
 740     total_connections++;
 741   }
 742   else
 743   {
 744     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 745                 "***************** test: Problem with new connection (%s)\n",
 746                 emsg);
 747   }
 748
 749 }
 750
 751
 752 /**
 753  * run: load configuration options and schedule test to run (start peergroup)
 754  * @param cls closure
 755  * @param args argv
 756  * @param cfgfile configuration file name (can be NULL)
 757  * @param cfg configuration handle
 758  */
 759 static void
 760 run (void *cls, char *const *args, const char *cfgfile,
 761      const struct GNUNET_CONFIGURATION_Handle *cfg)
 762 {
 763   char *temp_str;
 764   unsigned long long temp_wait;
 765   struct GNUNET_TESTING_Host *hosts;
 766   char *data_filename;
 767
 768   ok = 0;
 769   testing_cfg = GNUNET_CONFIGURATION_dup (cfg);
 770
 771   GNUNET_log_setup ("test_mesh_small",
 772 #if VERBOSE
 773                     "DEBUG",
 774 #else
 775                     "WARNING",
 776 #endif
 777                     NULL);
 778
 779 #if VERBOSE
 780   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Starting daemons.\n");
 781   GNUNET_CONFIGURATION_set_value_string (testing_cfg, "testing",
 782                                          "use_progressbars", "YES");
 783 #endif
 784
 785   if (GNUNET_OK !=
 786       GNUNET_CONFIGURATION_get_value_number (testing_cfg, "testing",
 787                                              "num_peers", &num_peers))
 788   {
 789     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 790                 "Option TESTING:NUM_PEERS is required!\n");
 791     return;
 792   }
 793
 794   mesh_peers = GNUNET_malloc (sizeof(GNUNET_PEER_Id) * (num_peers + 1));
 795
 796   if (GNUNET_OK !=
 797       GNUNET_CONFIGURATION_get_value_number (testing_cfg, "test_mesh_small",
 798                                              "wait_time", &temp_wait))
 799   {
 800     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 801                 "Option test_mesh_small:wait_time is required!\n");
 802     return;
 803   }
 804
 805   if (GNUNET_OK !=
 806       GNUNET_CONFIGURATION_get_value_string (testing_cfg, "testing",
 807                                              "topology_output_file",
 808                                              &topology_file))
 809   {
 810     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 811                 "Option test_mesh_small:topology_output_file is required!\n");
 812     return;
 813   }
 814
 815   if (GNUNET_OK ==
 816       GNUNET_CONFIGURATION_get_value_string (testing_cfg, "test_mesh_small",
 817                                              "data_output_file",
 818                                              &data_filename))
 819   {
 820     data_file =
 821       GNUNET_DISK_file_open (data_filename,
 822                              GNUNET_DISK_OPEN_READWRITE |
 823                              GNUNET_DISK_OPEN_CREATE,
 824                              GNUNET_DISK_PERM_USER_READ |
 825                              GNUNET_DISK_PERM_USER_WRITE);
 826     if (data_file == NULL)
 827     {
 828       GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Failed to open %s for output!\n",
 829                   data_filename);
 830       GNUNET_free (data_filename);
 831     }
 832   }
 833
 834   wait_time =
 835       GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, temp_wait);
 836
 837   if (GNUNET_YES ==
 838       GNUNET_CONFIGURATION_get_value_string (cfg, "test_mesh_small",
 839                                              "output_file", &temp_str))
 840   {
 841     output_file =
 842         GNUNET_DISK_file_open (temp_str,
 843                                GNUNET_DISK_OPEN_READWRITE |
 844                                GNUNET_DISK_OPEN_CREATE,
 845                                GNUNET_DISK_PERM_USER_READ |
 846                                GNUNET_DISK_PERM_USER_WRITE);
 847     if (output_file == NULL)
 848       GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Failed to open %s for output!\n",
 849                   temp_str);
 850   }
 851   GNUNET_free_non_null (temp_str);
 852
 853   hosts = GNUNET_TESTING_hosts_load (testing_cfg);
 854
 855   pg = GNUNET_TESTING_peergroup_start (testing_cfg, num_peers, TIMEOUT,
 856                                        &connect_cb, &peergroup_ready, NULL,
 857                                        hosts);
 858   GNUNET_assert (pg != NULL);
 859   shutdown_handle =
 860       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_get_forever (),
 861                                     &shutdown_task, NULL);
 862 }
 863
 864
 865
 866 /**
 867  * test_mesh_small command line options
 868  */
 869 static struct GNUNET_GETOPT_CommandLineOption options[] = {
 870   {'V', "verbose", NULL,
 871    gettext_noop ("be verbose (print progress information)"),
 872    0, &GNUNET_GETOPT_set_one, &verbose},
 873   GNUNET_GETOPT_OPTION_END
 874 };
 875
 876
 877 /**
 878  * Main: start test
 879  */
 880 int
 881 main (int argc, char *argv[])
 882 {
 883   char *const argv2[] = {
 884     argv[0],
 885     "-c",
 886     "test_mesh_small.conf",
 887 #if VERBOSE
 888     "-L",
 889     "DEBUG",
 890 #endif
 891     NULL
 892   };
 893
 894   /* Each peer is supposed to generate the following callbacks:
 895    * 1 incoming tunnel (@dest)
 896    * 1 connected peer (@orig)
 897    * 1 received data packet (@dest)
 898    * 1 received data packet (@orig)
 899    * 1 received tunnel destroy (@dest)
 900    * _________________________________
 901    * 5 x ok expected per peer
 902    */
 903   int ok_goal;
 904
 905   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: Start\n");
 906   if (strstr (argv[0], "test_mesh_small_unicast") != NULL)
 907   {
 908     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: UNICAST\n");
 909     test = UNICAST;
 910     ok_goal = 5;
 911   }
 912   else if (strstr (argv[0], "test_mesh_small_multicast") != NULL)
 913   {
 914     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: MULTICAST\n");
 915     test = MULTICAST;
 916     ok_goal = 10;
 917   }
 918   else
 919   {
 920     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "***************** test: UNKNOWN\n");
 921     test = SETUP;
 922     ok_goal = 0;
 923   }
 924
 925   GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1, argv2,
 926                       "test_mesh_small",
 927                       gettext_noop ("Test mesh in a small network."),
 928                       options, &run, NULL);
 929 #if REMOVE_DIR
 930   GNUNET_DISK_directory_remove ("/tmp/test_mesh_small");
 931 #endif
 932   if (ok_goal != ok)
 933   {
 934     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 935                 "***************** test: FAILED! (%d/%d)\n", ok, ok_goal);
 936     return 1;
 937   }
 938   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 939               "***************** test: success\n");
 940   return 0;
 941 }
 942
 943 /* end of test_mesh_small.c */