src/mesh/mesh_profiler.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/mesh_profiler.c
  22  *
  23  * @brief Profiler for mesh experiments.
  24  */
  25 #include <stdio.h>
  26 #include "platform.h"
  27 #include "mesh_test_lib.h"
  28 #include "gnunet_mesh_service.h"
  29 #include "gnunet_statistics_service.h"
  30 #include <gauger.h>
  31
  32
  33 /**
  34  * How namy messages to send
  35  */
  36 #define TOTAL_PACKETS 1000
  37
  38 /**
  39  * How namy peers to run
  40  */
  41 #define TOTAL_PEERS 1000
  42
  43 /**
  44  * How long until we give up on connecting the peers?
  45  */
  46 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 120)
  47
  48 /**
  49  * Time to wait for stuff that should be rather fast
  50  */
  51 #define SHORT_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
  52
  53
  54 /**
  55  * How many events have happened
  56  */
  57 static int ok;
  58
  59 /**
  60  * Number of events expected to conclude the test successfully.
  61  */
  62 int ok_goal;
  63
  64 /**
  65  * Size of each test packet
  66  */
  67 size_t size_payload = sizeof (struct GNUNET_MessageHeader) + sizeof (uint32_t);
  68
  69 /**
  70  * Operation to get peer ids.
  71  */
  72 struct GNUNET_TESTBED_Operation *t_op[TOTAL_PEERS];
  73
  74 /**
  75  * Peer ids.
  76  */
  77 struct GNUNET_PeerIdentity *p_id[TOTAL_PEERS];
  78
  79 /**
  80  * Mesh handle for the root peer
  81  */
  82 static struct GNUNET_MESH_Handle *mesh_h[TOTAL_PEERS];
  83
  84 /**
  85  * Channel handle for the root peer
  86  */
  87 static struct GNUNET_MESH_Channel *ch;
  88
  89 /**
  90  * Channel handle for the dest peer
  91  */
  92 static struct GNUNET_MESH_Channel *incoming_ch;
  93
  94 /**
  95  * Peer ids counter.
  96  */
  97 unsigned int p_ids;
  98
  99 /**
 100  * Is the setup initialized?
 101  */
 102 static int initialized;
 103
 104 /**
 105  * Number of payload packes sent
 106  */
 107 static int data_sent;
 108
 109 /**
 110  * Number of payload packets received
 111  */
 112 static int data_received;
 113
 114 /**
 115  * Number of payload packed explicitly (app level) acknowledged
 116  */
 117 static int data_ack;
 118
 119 /**
 120  * Total number of currently running peers.
 121  */
 122 static unsigned long long peers_running;
 123
 124 /**
 125  * Test context (to shut down).
 126  */
 127 struct GNUNET_MESH_TEST_Context *test_ctx;
 128
 129 /**
 130  * Task called to shutdown test.
 131  */
 132 static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;
 133
 134 /**
 135  * Task called to disconnect peers, before shutdown.
 136  */
 137 static GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
 138
 139 /**
 140  * Task to perform tests
 141  */
 142 static GNUNET_SCHEDULER_TaskIdentifier test_task;
 143
 144 /**
 145  * Time we started the data transmission (after channel has been established
 146  * and initilized).
 147  */
 148 static struct GNUNET_TIME_Absolute start_time;
 149
 150 static struct GNUNET_TESTBED_Peer **testbed_peers;
 151
 152 /**
 153  *
 154  */
 155 static struct GNUNET_STATISTICS_Handle *stats;
 156 static struct GNUNET_STATISTICS_GetHandle *stats_get;
 157 static struct GNUNET_TESTBED_Operation *stats_op;
 158 static unsigned int ka_sent;
 159 static unsigned int ka_received;
 160
 161
 162 /**
 163  * Show the results of the test (banwidth acheived) and log them to GAUGER
 164  */
 165 static void
 166 show_end_data (void)
 167 {
 168   static struct GNUNET_TIME_Absolute end_time;
 169   static struct GNUNET_TIME_Relative total_time;
 170
 171   end_time = GNUNET_TIME_absolute_get();
 172   total_time = GNUNET_TIME_absolute_get_difference(start_time, end_time);
 173   FPRINTF (stderr, "\nResults of test \"%s\"\n", test_name);
 174   FPRINTF (stderr, "Test time %s\n",
 175            GNUNET_STRINGS_relative_time_to_string (total_time,
 176                                                    GNUNET_YES));
 177   FPRINTF (stderr, "Test bandwidth: %f kb/s\n",
 178            4 * TOTAL_PACKETS * 1.0 / (total_time.rel_value_us / 1000)); // 4bytes * ms
 179   FPRINTF (stderr, "Test throughput: %f packets/s\n\n",
 180            TOTAL_PACKETS * 1000.0 / (total_time.rel_value_us / 1000)); // packets * ms
 181   GAUGER ("MESH", test_name,
 182           TOTAL_PACKETS * 1000.0 / (total_time.rel_value_us / 1000),
 183           "packets/s");
 184 }
 185
 186
 187 /**
 188  * Shut down peergroup, clean up.
 189  *
 190  * @param cls Closure (unused).
 191  * @param tc Task Context.
 192  */
 193 static void
 194 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 195 {
 196   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Ending test.\n");
 197   shutdown_handle = GNUNET_SCHEDULER_NO_TASK;
 198 }
 199
 200
 201 /**
 202  * Disconnect from mesh services af all peers, call shutdown.
 203  *
 204  * @param cls Closure (unused).
 205  * @param tc Task Context.
 206  */
 207 static void
 208 disconnect_mesh_peers (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 209 {
 210   long line = (long) cls;
 211   unsigned int i;
 212
 213   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 214               "disconnecting mesh service of peers, called from line %ld\n",
 215               line);
 216   disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 217   for (i = 0; i < 2; i++)
 218   {
 219     GNUNET_TESTBED_operation_done (t_op[i]);
 220   }
 221   if (NULL != ch)
 222   {
 223     GNUNET_MESH_channel_destroy (ch);
 224     ch = NULL;
 225   }
 226   if (NULL != incoming_ch)
 227   {
 228     GNUNET_MESH_channel_destroy (incoming_ch);
 229     incoming_ch = NULL;
 230   }
 231   GNUNET_MESH_TEST_cleanup (test_ctx);
 232   if (GNUNET_SCHEDULER_NO_TASK != shutdown_handle)
 233   {
 234     GNUNET_SCHEDULER_cancel (shutdown_handle);
 235   }
 236   if (NULL != stats_get)
 237     GNUNET_STATISTICS_get_cancel (stats_get);
 238   shutdown_handle = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
 239 }
 240
 241
 242 /**
 243  * Abort test: schedule disconnect and shutdown immediately
 244  *
 245  * @param line Line in the code the abort is requested from (__LINE__).
 246  */
 247 static void
 248 abort_test (long line)
 249 {
 250   if (disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 251   {
 252     GNUNET_SCHEDULER_cancel (disconnect_task);
 253     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 254                                                 (void *) line);
 255   }
 256 }
 257
 258 /**
 259  * Transmit ready callback.
 260  *
 261  * @param cls Closure (message type).
 262  * @param size Size of the tranmist buffer.
 263  * @param buf Pointer to the beginning of the buffer.
 264  *
 265  * @return Number of bytes written to buf.
 266  */
 267 static size_t
 268 tmt_rdy (void *cls, size_t size, void *buf);
 269
 270
 271 /**
 272  * Task to schedule a new data transmission.
 273  *
 274  * @param cls Closure (peer #).
 275  * @param tc Task Context.
 276  */
 277 static void
 278 data_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 279 {
 280   struct GNUNET_MESH_TransmitHandle *th;
 281   struct GNUNET_MESH_Channel *channel;
 282
 283   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 284     return;
 285
 286   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Data task\n");
 287   if (GNUNET_YES == test_backwards)
 288   {
 289     channel = incoming_ch;
 290   }
 291   else
 292   {
 293     channel = ch;
 294   }
 295   th = GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
 296                                           GNUNET_TIME_UNIT_FOREVER_REL,
 297                                           size_payload, &tmt_rdy, (void *) 1L);
 298   if (NULL == th)
 299   {
 300     unsigned long i = (unsigned long) cls;
 301
 302     GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Retransmission\n");
 303     if (0 == i)
 304     {
 305       GNUNET_log (GNUNET_ERROR_TYPE_INFO, "  in 1 ms\n");
 306       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
 307                                     &data_task, (void *)1UL);
 308     }
 309     else
 310     {
 311       i++;
 312       GNUNET_log (GNUNET_ERROR_TYPE_INFO, "in %u ms\n", i);
 313       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(
 314                                       GNUNET_TIME_UNIT_MILLISECONDS,
 315                                       i),
 316                                     &data_task, (void *)i);
 317     }
 318   }
 319 }
 320
 321
 322 /**
 323  * Transmit ready callback
 324  *
 325  * @param cls Closure (message type).
 326  * @param size Size of the buffer we have.
 327  * @param buf Buffer to copy data to.
 328  */
 329 size_t
 330 tmt_rdy (void *cls, size_t size, void *buf)
 331 {
 332   struct GNUNET_MessageHeader *msg = buf;
 333   uint32_t *data;
 334
 335   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 336               "tmt_rdy called, filling buffer\n");
 337   if (size < size_payload || NULL == buf)
 338   {
 339     GNUNET_break (ok >= ok_goal - 2);
 340     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 341                 "size %u, buf %p, data_sent %u, data_received %u\n",
 342                 size, buf, data_sent, data_received);
 343     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ok %u, ok goal %u\n", ok, ok_goal);
 344
 345     return 0;
 346   }
 347   msg->size = htons (size);
 348   msg->type = htons ((long) cls);
 349   data = (uint32_t *) &msg[1];
 350   *data = htonl (data_sent);
 351   if (GNUNET_NO == initialized)
 352   {
 353     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 354                 "sending initializer\n");
 355   }
 356   else if (SPEED == test)
 357   {
 358     data_sent++;
 359     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 360               " Sent packet %d\n", data_sent);
 361     if (data_sent < TOTAL_PACKETS)
 362     {
 363       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 364               " Scheduling packet %d\n", data_sent + 1);
 365       GNUNET_SCHEDULER_add_now (&data_task, NULL);
 366     }
 367   }
 368
 369   return size_payload;
 370 }
 371
 372
 373 /**
 374  * Function is called whenever a message is received.
 375  *
 376  * @param cls closure (set from GNUNET_MESH_connect)
 377  * @param channel connection to the other end
 378  * @param channel_ctx place to store local state associated with the channel
 379  * @param message the actual message
 380  * @return GNUNET_OK to keep the connection open,
 381  *         GNUNET_SYSERR to close it (signal serious error)
 382  */
 383 int
 384 data_callback (void *cls, struct GNUNET_MESH_Channel *channel,
 385                void **channel_ctx,
 386                const struct GNUNET_MessageHeader *message)
 387 {
 388   long client = (long) cls;
 389   long expected_target_client;
 390   uint32_t *data;
 391
 392   ok++;
 393
 394   GNUNET_MESH_receive_done (channel);
 395
 396   if ((ok % 20) == 0)
 397   {
 398     if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 399     {
 400       GNUNET_SCHEDULER_cancel (disconnect_task);
 401       disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 402                                                       &disconnect_mesh_peers,
 403                                                       (void *) __LINE__);
 404     }
 405   }
 406
 407   switch (client)
 408   {
 409   case 0L:
 410     GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Root client got a message!\n");
 411     break;
 412   case 4L:
 413     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 414                 "Leaf client %li got a message.\n",
 415                 client);
 416     break;
 417   default:
 418     GNUNET_assert (0);
 419     break;
 420   }
 421   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: (%d/%d)\n", ok, ok_goal);
 422   data = (uint32_t *) &message[1];
 423   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " payload: (%u)\n", ntohl (*data));
 424   if (SPEED == test && GNUNET_YES == test_backwards)
 425   {
 426     expected_target_client = 0L;
 427   }
 428   else
 429   {
 430     expected_target_client = 4L;
 431   }
 432
 433   if (GNUNET_NO == initialized)
 434   {
 435     initialized = GNUNET_YES;
 436     start_time = GNUNET_TIME_absolute_get ();
 437     if (SPEED == test)
 438     {
 439       GNUNET_assert (4L == client);
 440       GNUNET_SCHEDULER_add_now (&data_task, NULL);
 441       return GNUNET_OK;
 442     }
 443   }
 444
 445   if (client == expected_target_client) // Normally 4
 446   {
 447     data_received++;
 448     GNUNET_log (GNUNET_ERROR_TYPE_INFO, " received data %u\n", data_received);
 449     if (SPEED != test || (ok_goal - 2) == ok)
 450     {
 451       GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
 452                                          GNUNET_TIME_UNIT_FOREVER_REL,
 453                                          size_payload, &tmt_rdy, (void *) 1L);
 454       return GNUNET_OK;
 455     }
 456     else
 457     {
 458       if (data_received < TOTAL_PACKETS)
 459         return GNUNET_OK;
 460     }
 461   }
 462   else // Normally 0
 463   {
 464     if (test == SPEED_ACK || test == SPEED)
 465     {
 466       data_ack++;
 467       GNUNET_log (GNUNET_ERROR_TYPE_INFO, " received ack %u\n", data_ack);
 468       GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
 469                                          GNUNET_TIME_UNIT_FOREVER_REL,
 470                                          size_payload, &tmt_rdy, (void *) 1L);
 471       if (data_ack < TOTAL_PACKETS && SPEED != test)
 472         return GNUNET_OK;
 473       if (ok == 2 && SPEED == test)
 474         return GNUNET_OK;
 475       show_end_data();
 476     }
 477     if (test == P2P_SIGNAL)
 478     {
 479       GNUNET_MESH_channel_destroy (incoming_ch);
 480       incoming_ch = NULL;
 481     }
 482     else
 483     {
 484       GNUNET_MESH_channel_destroy (ch);
 485       ch = NULL;
 486     }
 487   }
 488
 489   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 490   {
 491     GNUNET_SCHEDULER_cancel (disconnect_task);
 492     disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 493                                                     &disconnect_mesh_peers,
 494                                                     (void *) __LINE__);
 495   }
 496
 497   return GNUNET_OK;
 498 }
 499
 500
 501 /**
 502  * Adapter function called to establish a connection to the statistics service.
 503  *
 504  * @param cls closure
 505  * @param cfg configuration of the peer to connect to; will be available until
 506  *          GNUNET_TESTBED_operation_done() is called on the operation returned
 507  *          from GNUNET_TESTBED_service_connect()
 508  * @return service handle to return in 'op_result', NULL on error
 509  */
 510 static void *
 511 stats_ca (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
 512 {
 513   return GNUNET_STATISTICS_create ("<test_mesh>", cfg);
 514 }
 515
 516
 517 /**
 518  * Adapter function called to destroy a connection to
 519  * statistics service.
 520  *
 521  * @param cls Closure (unused).
 522  * @param op_result service handle returned from the connect adapter
 523  */
 524 static void
 525 stats_da (void *cls, void *op_result)
 526 {
 527   GNUNET_assert (op_result == stats);
 528   GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
 529   stats = NULL;
 530 }
 531
 532
 533 /**
 534  * Function called by testbed once we are connected to stats
 535  * service. Get the statistics of interest.
 536  *
 537  * @param cls Closure (unused).
 538  * @param op connect operation handle
 539  * @param ca_result handle to stats service
 540  * @param emsg error message on failure
 541  */
 542 static void
 543 stats_connect_cb (void *cls,
 544                   struct GNUNET_TESTBED_Operation *op,
 545                   void *ca_result,
 546                   const char *emsg);
 547
 548 /**
 549  * Stats callback. Finish the stats testbed operation and when all stats have
 550  * been iterated, shutdown the test.
 551  *
 552  * @param cls closure
 553  * @param success GNUNET_OK if statistics were
 554  *        successfully obtained, GNUNET_SYSERR if not.
 555  */
 556 static void
 557 stats_cont (void *cls, int success)
 558 {
 559   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "stats_cont for peer %u\n", cls);
 560   GNUNET_TESTBED_operation_done (stats_op);
 561   stats_get = NULL;
 562   if (NULL == cls)
 563   {
 564     stats_op = GNUNET_TESTBED_service_connect (NULL,
 565                                                testbed_peers[4],
 566                                                "statistics",
 567                                                &stats_connect_cb,
 568                                                (void *)4,
 569                                                &stats_ca,
 570                                                &stats_da,
 571                                                (void *)4);
 572   }
 573   else
 574   {
 575     if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 576       GNUNET_SCHEDULER_cancel (disconnect_task);
 577     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 578                                                 (void *) __LINE__);
 579   }
 580 }
 581
 582
 583 /**
 584  * Process statistic values.
 585  *
 586  * @param cls closure
 587  * @param subsystem name of subsystem that created the statistic
 588  * @param name the name of the datum
 589  * @param value the current value
 590  * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
 591  * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
 592  */
 593 static int
 594 stats_iterator (void *cls, const char *subsystem, const char *name,
 595                 uint64_t value, int is_persistent)
 596 {
 597   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "  %u - %s [%s]: %llu\n",
 598               cls, subsystem, name, value);
 599   if (0 == strncmp("# keepalives sent", name,
 600                    strlen("# keepalives sent"))
 601       && 0 == (long) cls)
 602     ka_sent = value;
 603
 604   if (0 == strncmp("# keepalives received", name,
 605                    strlen ("# keepalives received"))
 606       && 4 == (long) cls)
 607   {
 608     ka_received = value;
 609     GNUNET_log (GNUNET_ERROR_TYPE_INFO, " sent: %u, received: %u\n",
 610                 ka_sent, ka_received);
 611     if (ka_sent < 2 || ka_sent > ka_received + 1)
 612       ok--;
 613   }
 614
 615   return GNUNET_OK;
 616 }
 617
 618
 619 /**
 620  * Function called by testbed once we are connected to stats
 621  * service. Get the statistics of interest.
 622  *
 623  * @param cls Closure (unused).
 624  * @param op connect operation handle
 625  * @param ca_result handle to stats service
 626  * @param emsg error message on failure
 627  */
 628 static void
 629 stats_connect_cb (void *cls,
 630                   struct GNUNET_TESTBED_Operation *op,
 631                   void *ca_result,
 632                   const char *emsg)
 633 {
 634   if (NULL == ca_result || NULL != emsg)
 635   {
 636     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 637                 "Failed to connect to statistics service: %s\n", emsg);
 638     return;
 639   }
 640
 641   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "stats for peer %u\n", cls);
 642   stats = ca_result;
 643
 644   stats_get = GNUNET_STATISTICS_get (stats, "mesh", NULL,
 645                                      GNUNET_TIME_UNIT_FOREVER_REL,
 646                                      &stats_cont, &stats_iterator, cls);
 647   if (NULL == stats_get)
 648   {
 649     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 650                 "Could not get statistics of peer %u!\n", cls);
 651   }
 652 }
 653
 654
 655 /**
 656  * Task check that keepalives were sent and received.
 657  *
 658  * @param cls Closure (NULL).
 659  * @param tc Task Context.
 660  */
 661 static void
 662 check_keepalives (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 663 {
 664   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 665     return;
 666
 667   disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 668   GNUNET_log (GNUNET_ERROR_TYPE_INFO, "check keepalives\n");
 669   GNUNET_MESH_channel_destroy (ch);
 670   stats_op = GNUNET_TESTBED_service_connect (NULL,
 671                                              testbed_peers[0],
 672                                              "statistics",
 673                                              &stats_connect_cb,
 674                                              NULL,
 675                                              &stats_ca,
 676                                              &stats_da,
 677                                              NULL);
 678 }
 679
 680
 681 /**
 682  * Handlers, for diverse services
 683  */
 684 static struct GNUNET_MESH_MessageHandler handlers[] = {
 685   {&data_callback, 1, sizeof (struct GNUNET_MessageHeader)},
 686   {NULL, 0, 0}
 687 };
 688
 689
 690 /**
 691  * Method called whenever another peer has added us to a channel
 692  * the other peer initiated.
 693  *
 694  * @param cls Closure.
 695  * @param channel New handle to the channel.
 696  * @param initiator Peer that started the channel.
 697  * @param port Port this channel is connected to.
 698  * @param options channel option flags
 699  * @return Initial channel context for the channel
 700  *         (can be NULL -- that's not an error).
 701  */
 702 static void *
 703 incoming_channel (void *cls, struct GNUNET_MESH_Channel *channel,
 704                  const struct GNUNET_PeerIdentity *initiator,
 705                  uint32_t port, enum GNUNET_MESH_ChannelOption options)
 706 {
 707   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 708               "Incoming channel from %s to peer %d\n",
 709               GNUNET_i2s (initiator), (long) cls);
 710   ok++;
 711   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 712   if ((long) cls == 4L)
 713     incoming_ch = channel;
 714   else
 715   {
 716     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 717                 "Incoming channel for unknown client %lu\n", (long) cls);
 718     GNUNET_break(0);
 719   }
 720   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 721   {
 722     GNUNET_SCHEDULER_cancel (disconnect_task);
 723     if (KEEPALIVE == test)
 724     {
 725       struct GNUNET_TIME_Relative delay;
 726       delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS , 5);
 727       disconnect_task =
 728         GNUNET_SCHEDULER_add_delayed (delay, &check_keepalives, NULL);
 729     }
 730     else
 731       disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 732                                                       &disconnect_mesh_peers,
 733                                                       (void *) __LINE__);
 734   }
 735
 736   return NULL;
 737 }
 738
 739 /**
 740  * Function called whenever an inbound channel is destroyed.  Should clean up
 741  * any associated state.
 742  *
 743  * @param cls closure (set from GNUNET_MESH_connect)
 744  * @param channel connection to the other end (henceforth invalid)
 745  * @param channel_ctx place where local state associated
 746  *                   with the channel is stored
 747  */
 748 static void
 749 channel_cleaner (void *cls, const struct GNUNET_MESH_Channel *channel,
 750                  void *channel_ctx)
 751 {
 752   long i = (long) cls;
 753
 754   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 755               "Incoming channel disconnected at peer %d\n",
 756               i);
 757   if (4L == i)
 758   {
 759     ok++;
 760     GNUNET_break (channel == incoming_ch);
 761     incoming_ch = NULL;
 762   }
 763   else if (0L == i)
 764   {
 765     if (P2P_SIGNAL == test)
 766     {
 767       ok ++;
 768     }
 769     GNUNET_break (channel == ch);
 770     ch = NULL;
 771   }
 772   else
 773     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 774                 "Unknown peer! %d\n", i);
 775   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 776
 777   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 778   {
 779     GNUNET_SCHEDULER_cancel (disconnect_task);
 780     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 781                                                 (void *) __LINE__);
 782   }
 783
 784   return;
 785 }
 786
 787
 788 /**
 789  * START THE TESTCASE ITSELF, AS WE ARE CONNECTED TO THE MESH SERVICES.
 790  *
 791  * Testcase continues when the root receives confirmation of connected peers,
 792  * on callback funtion ch.
 793  *
 794  * @param cls Closure (unsued).
 795  * @param tc Task Context.
 796  */
 797 static void
 798 do_test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 799 {
 800   enum GNUNET_MESH_ChannelOption flags;
 801
 802   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 803     return;
 804
 805   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test_task\n");
 806
 807   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 808   {
 809     GNUNET_SCHEDULER_cancel (disconnect_task);
 810   }
 811
 812   flags = GNUNET_MESH_OPTION_DEFAULT;
 813   if (SPEED_REL == test)
 814   {
 815     test = SPEED;
 816     flags |= GNUNET_MESH_OPTION_RELIABLE;
 817   }
 818   ch = GNUNET_MESH_channel_create (h1, NULL, p_id[1], 1, flags);
 819
 820   disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 821                                                   &disconnect_mesh_peers,
 822                                                   (void *) __LINE__);
 823   if (KEEPALIVE == test)
 824     return; /* Don't send any data. */
 825
 826   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 827               "Sending data initializer...\n");
 828   data_ack = 0;
 829   data_received = 0;
 830   data_sent = 0;
 831   GNUNET_MESH_notify_transmit_ready (ch, GNUNET_NO,
 832                                      GNUNET_TIME_UNIT_FOREVER_REL,
 833                                      size_payload, &tmt_rdy, (void *) 1L);
 834 }
 835
 836 /**
 837  * Callback to be called when the requested peer information is available
 838  *
 839  * @param cls the closure from GNUNET_TESTBED_peer_get_information()
 840  * @param op the operation this callback corresponds to
 841  * @param pinfo the result; will be NULL if the operation has failed
 842  * @param emsg error message if the operation has failed;
 843  *             NULL if the operation is successfull
 844  */
 845 static void
 846 pi_cb (void *cls,
 847        struct GNUNET_TESTBED_Operation *op,
 848        const struct GNUNET_TESTBED_PeerInformation *pinfo,
 849        const char *emsg)
 850 {
 851   long i = (long) cls;
 852
 853   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "id callback for %ld\n", i);
 854
 855   if (NULL == pinfo || NULL != emsg)
 856   {
 857     GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "pi_cb: %s\n", emsg);
 858     abort_test (__LINE__);
 859     return;
 860   }
 861   p_id[i] = pinfo->result.id;
 862   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "  id: %s\n", GNUNET_i2s (p_id[i]));
 863   p_ids++;
 864   if (p_ids < 2)
 865     return;
 866   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got all IDs, starting test\n");
 867   test_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
 868                                             &do_test, NULL);
 869 }
 870
 871 /**
 872  * test main: start test when all peers are connected
 873  *
 874  * @param cls Closure.
 875  * @param ctx Argument to give to GNUNET_MESH_TEST_cleanup on test end.
 876  * @param num_peers Number of peers that are running.
 877  * @param peers Array of peers.
 878  * @param meshes Handle to each of the MESHs of the peers.
 879  */
 880 static void
 881 tmain (void *cls,
 882        struct GNUNET_MESH_TEST_Context *ctx,
 883        unsigned int num_peers,
 884        struct GNUNET_TESTBED_Peer **peers,
 885        struct GNUNET_MESH_Handle **meshes)
 886 {
 887   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test main\n");
 888   ok = 0;
 889   test_ctx = ctx;
 890   peers_running = num_peers;
 891   testbed_peers = peers;
 892   h1 = meshes[0];
 893   h2 = meshes[num_peers - 1];
 894   disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 895                                                   &disconnect_mesh_peers,
 896                                                   (void *) __LINE__);
 897   shutdown_handle = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
 898                                                   &shutdown_task, NULL);
 899   t_op[0] = GNUNET_TESTBED_peer_get_information (peers[0],
 900                                                  GNUNET_TESTBED_PIT_IDENTITY,
 901                                                  &pi_cb, (void *) 0L);
 902   t_op[1] = GNUNET_TESTBED_peer_get_information (peers[num_peers - 1],
 903                                                  GNUNET_TESTBED_PIT_IDENTITY,
 904                                                  &pi_cb, (void *) 1L);
 905   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "requested peer ids\n");
 906 }
 907
 908
 909 /**
 910  * Main: start test
 911  */
 912 int
 913 main (int argc, char *argv[])
 914 {
 915   initialized = GNUNET_NO;
 916   uint32_t ports[2];
 917   const char *config_file;
 918
 919   GNUNET_log_setup ("test", "DEBUG", NULL);
 920   config_file = "test_mesh.conf";
 921
 922   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Start\n");
 923   if (strstr (argv[0], "_small_forward") != NULL)
 924   {
 925     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "FORWARD\n");
 926     test = FORWARD;
 927     test_name = "unicast";
 928     ok_goal = 4;
 929   }
 930   else if (strstr (argv[0], "_small_signal") != NULL)
 931   {
 932     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SIGNAL\n");
 933     test = P2P_SIGNAL;
 934     test_name = "signal";
 935     ok_goal = 4;
 936   }
 937   else if (strstr (argv[0], "_small_speed_ack") != NULL)
 938   {
 939     /* Test is supposed to generate the following callbacks:
 940      * 1 incoming channel (@dest)
 941      * TOTAL_PACKETS received data packet (@dest)
 942      * TOTAL_PACKETS received data packet (@orig)
 943      * 1 received channel destroy (@dest)
 944      */
 945     ok_goal = TOTAL_PACKETS * 2 + 2;
 946     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SPEED_ACK\n");
 947     test = SPEED_ACK;
 948     test_name = "speed ack";
 949   }
 950   else if (strstr (argv[0], "_small_speed") != NULL)
 951   {
 952     /* Test is supposed to generate the following callbacks:
 953      * 1 incoming channel (@dest)
 954      * 1 initial packet (@dest)
 955      * TOTAL_PACKETS received data packet (@dest)
 956      * 1 received data packet (@orig)
 957      * 1 received channel destroy (@dest)
 958      */
 959     ok_goal = TOTAL_PACKETS + 4;
 960     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SPEED\n");
 961     if (strstr (argv[0], "_reliable") != NULL)
 962     {
 963       test = SPEED_REL;
 964       test_name = "speed reliable";
 965       config_file = "test_mesh_drop.conf";
 966     }
 967     else
 968     {
 969       test = SPEED;
 970       test_name = "speed";
 971     }
 972   }
 973   else if (strstr (argv[0], "_keepalive") != NULL)
 974   {
 975     test = KEEPALIVE;
 976     /* Test is supposed to generate the following callbacks:
 977      * 1 incoming channel (@dest)
 978      * [wait]
 979      * 1 received channel destroy (@dest)
 980      */
 981     ok_goal = 2;
 982   }
 983   else
 984   {
 985     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "UNKNOWN\n");
 986     test = SETUP;
 987     ok_goal = 0;
 988   }
 989
 990   if (strstr (argv[0], "backwards") != NULL)
 991   {
 992     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "BACKWARDS (LEAF TO ROOT)\n");
 993     test_backwards = GNUNET_YES;
 994     GNUNET_asprintf (&test_name, "backwards %s", test_name);
 995   }
 996
 997   p_ids = 0;
 998   ports[0] = 1;
 999   ports[1] = 0;
1000   GNUNET_MESH_TEST_run ("test_mesh_small",
1001                         config_file,
1002                         5,
1003                         &tmain,
1004                         NULL, /* tmain cls */
1005                         &incoming_channel,
1006                         &channel_cleaner,
1007                         handlers,
1008                         ports);
1009
1010   if (ok_goal > ok)
1011   {
1012     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1013                 "FAILED! (%d/%d)\n", ok, ok_goal);
1014     return 1;
1015   }
1016   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "success\n");
1017   return 0;
1018 }
1019
1020 /* end of test_mesh_small.c */
1021