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 <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 long until we give up on connecting the peers?
  40  */
  41 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 120)
  42
  43 /**
  44  * Time to wait for stuff that should be rather fast
  45  */
  46 #define SHORT_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
  47
  48 /**
  49  * DIFFERENT TESTS TO RUN
  50  */
  51 #define SETUP 0
  52 #define FORWARD 1
  53 #define KEEPALIVE 2
  54 #define SPEED 3
  55 #define SPEED_ACK 4
  56 #define SPEED_REL 8
  57 #define P2P_SIGNAL 10
  58
  59 /**
  60  * Which test are we running?
  61  */
  62 static int test;
  63
  64 /**
  65  * String with test name
  66  */
  67 char *test_name;
  68
  69 /**
  70  * Flag to send traffic leaf->root in speed tests to test BCK_ACK logic.
  71  */
  72 static int test_backwards = GNUNET_NO;
  73
  74 /**
  75  * How many events have happened
  76  */
  77 static int ok;
  78
  79 /**
  80  * Number of events expected to conclude the test successfully.
  81  */
  82 int ok_goal;
  83
  84 /**
  85  * Size of each test packet
  86  */
  87 size_t size_payload = sizeof (struct GNUNET_MessageHeader) + sizeof (uint32_t);
  88
  89 /**
  90  * Operation to get peer ids.
  91  */
  92 struct GNUNET_TESTBED_Operation *t_op[2];
  93
  94 /**
  95  * Peer ids.
  96  */
  97 struct GNUNET_PeerIdentity *p_id[2];
  98
  99 /**
 100  * Peer ids counter.
 101  */
 102 unsigned int p_ids;
 103
 104 /**
 105  * Is the setup initialized?
 106  */
 107 static int initialized;
 108
 109 /**
 110  * Number of payload packes sent
 111  */
 112 static int data_sent;
 113
 114 /**
 115  * Number of payload packets received
 116  */
 117 static int data_received;
 118
 119 /**
 120  * Number of payload packed explicitly (app level) acknowledged
 121  */
 122 static int data_ack;
 123
 124 /**
 125  * Total number of currently running peers.
 126  */
 127 static unsigned long long peers_running;
 128
 129 /**
 130  * Test context (to shut down).
 131  */
 132 struct GNUNET_MESH_TEST_Context *test_ctx;
 133
 134 /**
 135  * Task called to disconnect peers.
 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  * Task called to shutdown test.
 146  */
 147 static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;
 148
 149 /**
 150  * Mesh handle for the root peer
 151  */
 152 static struct GNUNET_MESH_Handle *h1;
 153
 154 /**
 155  * Mesh handle for the first leaf peer
 156  */
 157 static struct GNUNET_MESH_Handle *h2;
 158
 159 /**
 160  * Channel handle for the root peer
 161  */
 162 static struct GNUNET_MESH_Channel *ch;
 163
 164 /**
 165  * Channel handle for the dest peer
 166  */
 167 static struct GNUNET_MESH_Channel *incoming_ch;
 168
 169 /**
 170  * Time we started the data transmission (after channel has been established
 171  * and initilized).
 172  */
 173 static struct GNUNET_TIME_Absolute start_time;
 174
 175 static struct GNUNET_TESTBED_Peer **testbed_peers;
 176 static struct GNUNET_STATISTICS_Handle *stats;
 177 static struct GNUNET_STATISTICS_GetHandle *stats_get;
 178 static struct GNUNET_TESTBED_Operation *stats_op;
 179 static unsigned int stats_peer;
 180 static unsigned int ka_sent;
 181 static unsigned int ka_received;
 182
 183
 184 /**
 185  * Show the results of the test (banwidth acheived) and log them to GAUGER
 186  */
 187 static void
 188 show_end_data (void)
 189 {
 190   static struct GNUNET_TIME_Absolute end_time;
 191   static struct GNUNET_TIME_Relative total_time;
 192
 193   end_time = GNUNET_TIME_absolute_get();
 194   total_time = GNUNET_TIME_absolute_get_difference(start_time, end_time);
 195   FPRINTF (stderr, "\nResults of test \"%s\"\n", test_name);
 196   FPRINTF (stderr, "Test time %s\n",
 197            GNUNET_STRINGS_relative_time_to_string (total_time,
 198                                                    GNUNET_YES));
 199   FPRINTF (stderr, "Test bandwidth: %f kb/s\n",
 200            4 * TOTAL_PACKETS * 1.0 / (total_time.rel_value_us / 1000)); // 4bytes * ms
 201   FPRINTF (stderr, "Test throughput: %f packets/s\n\n",
 202            TOTAL_PACKETS * 1000.0 / (total_time.rel_value_us / 1000)); // packets * ms
 203   GAUGER ("MESH", test_name,
 204           TOTAL_PACKETS * 1000.0 / (total_time.rel_value_us / 1000),
 205           "packets/s");
 206 }
 207
 208
 209 /**
 210  * Shut down peergroup, clean up.
 211  *
 212  * @param cls Closure (unused).
 213  * @param tc Task Context.
 214  */
 215 static void
 216 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 217 {
 218   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Ending test.\n");
 219   shutdown_handle = GNUNET_SCHEDULER_NO_TASK;
 220 }
 221
 222
 223 /**
 224  * Disconnect from mesh services af all peers, call shutdown.
 225  *
 226  * @param cls Closure (unused).
 227  * @param tc Task Context.
 228  */
 229 static void
 230 disconnect_mesh_peers (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 231 {
 232   long line = (long) cls;
 233   unsigned int i;
 234
 235   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 236               "disconnecting mesh service of peers, called from line %ld\n",
 237               line);
 238   disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 239   for (i = 0; i < 2; i++)
 240   {
 241     GNUNET_TESTBED_operation_done (t_op[i]);
 242   }
 243   if (NULL != ch)
 244   {
 245     GNUNET_MESH_channel_destroy (ch);
 246     ch = NULL;
 247   }
 248   if (NULL != incoming_ch)
 249   {
 250     GNUNET_MESH_channel_destroy (incoming_ch);
 251     incoming_ch = NULL;
 252   }
 253   GNUNET_MESH_TEST_cleanup (test_ctx);
 254   if (GNUNET_SCHEDULER_NO_TASK != shutdown_handle)
 255   {
 256     GNUNET_SCHEDULER_cancel (shutdown_handle);
 257   }
 258   if (NULL != stats_get)
 259     GNUNET_STATISTICS_get_cancel (stats_get);
 260   shutdown_handle = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
 261 }
 262
 263
 264 /**
 265  * Abort test: schedule disconnect and shutdown immediately
 266  *
 267  * @param line Line in the code the abort is requested from (__LINE__).
 268  */
 269 static void
 270 abort_test (long line)
 271 {
 272   if (disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 273   {
 274     GNUNET_SCHEDULER_cancel (disconnect_task);
 275     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 276                                                 (void *) line);
 277   }
 278 }
 279
 280 /**
 281  * Transmit ready callback.
 282  *
 283  * @param cls Closure (message type).
 284  * @param size Size of the tranmist buffer.
 285  * @param buf Pointer to the beginning of the buffer.
 286  *
 287  * @return Number of bytes written to buf.
 288  */
 289 static size_t
 290 tmt_rdy (void *cls, size_t size, void *buf);
 291
 292
 293 /**
 294  * Task to schedule a new data transmission.
 295  *
 296  * @param cls Closure (peer #).
 297  * @param tc Task Context.
 298  */
 299 static void
 300 data_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 301 {
 302   struct GNUNET_MESH_TransmitHandle *th;
 303   struct GNUNET_MESH_Channel *channel;
 304
 305   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 306     return;
 307
 308   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Data task\n");
 309   if (GNUNET_YES == test_backwards)
 310   {
 311     channel = incoming_ch;
 312   }
 313   else
 314   {
 315     channel = ch;
 316   }
 317   th = GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
 318                                           GNUNET_TIME_UNIT_FOREVER_REL,
 319                                           size_payload, &tmt_rdy, (void *) 1L);
 320   if (NULL == th)
 321   {
 322     unsigned long i = (unsigned long) cls;
 323
 324     GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Retransmission\n");
 325     if (0 == i)
 326     {
 327       GNUNET_log (GNUNET_ERROR_TYPE_INFO, "  in 1 ms\n");
 328       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
 329                                     &data_task, (void *)1UL);
 330     }
 331     else
 332     {
 333       i++;
 334       GNUNET_log (GNUNET_ERROR_TYPE_INFO, "in %u ms\n", i);
 335       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(
 336                                       GNUNET_TIME_UNIT_MILLISECONDS,
 337                                       i),
 338                                     &data_task, (void *)i);
 339     }
 340   }
 341 }
 342
 343
 344 /**
 345  * Transmit ready callback
 346  *
 347  * @param cls Closure (message type).
 348  * @param size Size of the buffer we have.
 349  * @param buf Buffer to copy data to.
 350  */
 351 size_t
 352 tmt_rdy (void *cls, size_t size, void *buf)
 353 {
 354   struct GNUNET_MessageHeader *msg = buf;
 355   uint32_t *data;
 356
 357   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 358               "tmt_rdy called, filling buffer\n");
 359   if (size < size_payload || NULL == buf)
 360   {
 361     GNUNET_break (ok >= ok_goal - 2);
 362     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 363                 "size %u, buf %p, data_sent %u, data_received %u\n",
 364                 size, buf, data_sent, data_received);
 365     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ok %u, ok goal %u\n", ok, ok_goal);
 366
 367     return 0;
 368   }
 369   msg->size = htons (size);
 370   msg->type = htons ((long) cls);
 371   data = (uint32_t *) &msg[1];
 372   *data = htonl (data_sent);
 373   if (GNUNET_NO == initialized)
 374   {
 375     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 376                 "sending initializer\n");
 377   }
 378   else if (SPEED == test)
 379   {
 380     data_sent++;
 381     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 382               " Sent packet %d\n", data_sent);
 383     if (data_sent < TOTAL_PACKETS)
 384     {
 385       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 386               " Scheduling packet %d\n", data_sent + 1);
 387       GNUNET_SCHEDULER_add_now (&data_task, NULL);
 388     }
 389   }
 390
 391   return size_payload;
 392 }
 393
 394
 395 /**
 396  * Function is called whenever a message is received.
 397  *
 398  * @param cls closure (set from GNUNET_MESH_connect)
 399  * @param channel connection to the other end
 400  * @param channel_ctx place to store local state associated with the channel
 401  * @param message the actual message
 402  * @return GNUNET_OK to keep the connection open,
 403  *         GNUNET_SYSERR to close it (signal serious error)
 404  */
 405 int
 406 data_callback (void *cls, struct GNUNET_MESH_Channel *channel,
 407                void **channel_ctx,
 408                const struct GNUNET_MessageHeader *message)
 409 {
 410   long client = (long) cls;
 411   long expected_target_client;
 412   uint32_t *data;
 413
 414   ok++;
 415
 416   GNUNET_MESH_receive_done (channel);
 417
 418   if ((ok % 20) == 0)
 419   {
 420     if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 421     {
 422       GNUNET_SCHEDULER_cancel (disconnect_task);
 423       disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 424                                                       &disconnect_mesh_peers,
 425                                                       (void *) __LINE__);
 426     }
 427   }
 428
 429   switch (client)
 430   {
 431   case 0L:
 432     GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Root client got a message!\n");
 433     break;
 434   case 4L:
 435     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 436                 "Leaf client %li got a message.\n",
 437                 client);
 438     break;
 439   default:
 440     GNUNET_assert (0);
 441     break;
 442   }
 443   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: (%d/%d)\n", ok, ok_goal);
 444   data = (uint32_t *) &message[1];
 445   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " payload: (%u)\n", ntohl (*data));
 446   if (SPEED == test && GNUNET_YES == test_backwards)
 447   {
 448     expected_target_client = 0L;
 449   }
 450   else
 451   {
 452     expected_target_client = 4L;
 453   }
 454
 455   if (GNUNET_NO == initialized)
 456   {
 457     initialized = GNUNET_YES;
 458     start_time = GNUNET_TIME_absolute_get ();
 459     if (SPEED == test)
 460     {
 461       GNUNET_assert (4L == client);
 462       GNUNET_SCHEDULER_add_now (&data_task, NULL);
 463       return GNUNET_OK;
 464     }
 465   }
 466
 467   if (client == expected_target_client) // Normally 4
 468   {
 469     data_received++;
 470     GNUNET_log (GNUNET_ERROR_TYPE_INFO, " received data %u\n", data_received);
 471     if (SPEED != test || (ok_goal - 2) == ok)
 472     {
 473       GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
 474                                          GNUNET_TIME_UNIT_FOREVER_REL,
 475                                          size_payload, &tmt_rdy, (void *) 1L);
 476       return GNUNET_OK;
 477     }
 478     else
 479     {
 480       if (data_received < TOTAL_PACKETS)
 481         return GNUNET_OK;
 482     }
 483   }
 484   else // Normally 0
 485   {
 486     if (test == SPEED_ACK || test == SPEED)
 487     {
 488       data_ack++;
 489       GNUNET_log (GNUNET_ERROR_TYPE_INFO, " received ack %u\n", data_ack);
 490       GNUNET_MESH_notify_transmit_ready (channel, GNUNET_NO,
 491                                          GNUNET_TIME_UNIT_FOREVER_REL,
 492                                          size_payload, &tmt_rdy, (void *) 1L);
 493       if (data_ack < TOTAL_PACKETS && SPEED != test)
 494         return GNUNET_OK;
 495       if (ok == 2 && SPEED == test)
 496         return GNUNET_OK;
 497       show_end_data();
 498     }
 499     if (test == P2P_SIGNAL)
 500     {
 501       GNUNET_MESH_channel_destroy (incoming_ch);
 502       incoming_ch = NULL;
 503     }
 504     else
 505     {
 506       GNUNET_MESH_channel_destroy (ch);
 507       ch = NULL;
 508     }
 509   }
 510
 511   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 512   {
 513     GNUNET_SCHEDULER_cancel (disconnect_task);
 514     disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 515                                                     &disconnect_mesh_peers,
 516                                                     (void *) __LINE__);
 517   }
 518
 519   return GNUNET_OK;
 520 }
 521
 522
 523 /**
 524  * Adapter function called to establish a connection to the statistics service.
 525  *
 526  * @param cls closure
 527  * @param cfg configuration of the peer to connect to; will be available until
 528  *          GNUNET_TESTBED_operation_done() is called on the operation returned
 529  *          from GNUNET_TESTBED_service_connect()
 530  * @return service handle to return in 'op_result', NULL on error
 531  */
 532 static void *
 533 stats_ca (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg)
 534 {
 535   return GNUNET_STATISTICS_create ("<test_mesh>", cfg);
 536 }
 537
 538
 539 /**
 540  * Adapter function called to destroy a connection to
 541  * statistics service.
 542  *
 543  * @param cls Closure (unused).
 544  * @param op_result service handle returned from the connect adapter
 545  */
 546 static void
 547 stats_da (void *cls, void *op_result)
 548 {
 549   GNUNET_assert (op_result == stats);
 550   GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
 551   stats = NULL;
 552 }
 553
 554
 555 /**
 556  * Function called by testbed once we are connected to stats
 557  * service. Get the statistics of interest.
 558  *
 559  * @param cls Closure (unused).
 560  * @param op connect operation handle
 561  * @param ca_result handle to stats service
 562  * @param emsg error message on failure
 563  */
 564 static void
 565 stats_connect_cb (void *cls,
 566                   struct GNUNET_TESTBED_Operation *op,
 567                   void *ca_result,
 568                   const char *emsg);
 569
 570 /**
 571  * Stats callback. Finish the stats testbed operation and when all stats have
 572  * been iterated, shutdown the test.
 573  *
 574  * @param cls closure
 575  * @param success GNUNET_OK if statistics were
 576  *        successfully obtained, GNUNET_SYSERR if not.
 577  */
 578 static void
 579 stats_cont (void *cls, int success)
 580 {
 581   GNUNET_TESTBED_operation_done (stats_op);
 582   stats_get = NULL;
 583   if (NULL == cls)
 584   {
 585     stats_op = GNUNET_TESTBED_service_connect (NULL,
 586                                                testbed_peers[4],
 587                                                "statistics",
 588                                                &stats_connect_cb,
 589                                                (void *)4,
 590                                                &stats_ca,
 591                                                &stats_da,
 592                                                (void *)4);
 593   }
 594   else
 595   {
 596     if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 597       GNUNET_SCHEDULER_cancel (disconnect_task);
 598     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 599                                                 (void *) __LINE__);
 600   }
 601 }
 602
 603
 604 /**
 605  * Process statistic values.
 606  *
 607  * @param cls closure
 608  * @param subsystem name of subsystem that created the statistic
 609  * @param name the name of the datum
 610  * @param value the current value
 611  * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
 612  * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
 613  */
 614 static int
 615 stats_iterator (void *cls, const char *subsystem, const char *name,
 616                 uint64_t value, int is_persistent)
 617 {
 618   if (0 == strncmp("# keepalives sent", name,
 619                    strlen("# keepalives sent"))
 620       && 0 == stats_peer)
 621     ka_sent = value;
 622
 623   if (0 == strncmp("# keepalives received", name,
 624                    strlen ("# keepalives received"))
 625       && 4 == stats_peer)
 626   {
 627     ka_received = value;
 628     if (ka_sent < 2 || ka_sent > ka_received + 1)
 629       ok--;
 630   }
 631
 632   return GNUNET_OK;
 633 }
 634
 635
 636 /**
 637  * Function called by testbed once we are connected to stats
 638  * service. Get the statistics of interest.
 639  *
 640  * @param cls Closure (unused).
 641  * @param op connect operation handle
 642  * @param ca_result handle to stats service
 643  * @param emsg error message on failure
 644  */
 645 static void
 646 stats_connect_cb (void *cls,
 647                   struct GNUNET_TESTBED_Operation *op,
 648                   void *ca_result,
 649                   const char *emsg)
 650 {
 651   if (NULL == ca_result || NULL != emsg)
 652   {
 653     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 654                 "Failed to connect to statistics service: %s\n", emsg);
 655     return;
 656   }
 657
 658   stats = ca_result;
 659
 660   stats_get = GNUNET_STATISTICS_get (stats, "mesh", NULL,
 661                                       GNUNET_TIME_UNIT_FOREVER_REL,
 662                                       &stats_cont, &stats_iterator, cls);
 663   if (NULL == stats_get)
 664   {
 665     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 666                 "Could not get statistics of peer %u!\n", cls);
 667   }
 668 }
 669
 670
 671 /**
 672  * Task check that keepalives were sent and received.
 673  *
 674  * @param cls Closure (NULL).
 675  * @param tc Task Context.
 676  */
 677 static void
 678 check_keepalives (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 679 {
 680   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 681     return;
 682
 683   GNUNET_MESH_channel_destroy (ch);
 684   stats_op = GNUNET_TESTBED_service_connect (NULL,
 685                                              testbed_peers[0],
 686                                              "statistics",
 687                                              &stats_connect_cb,
 688                                              NULL,
 689                                              &stats_ca,
 690                                              &stats_da,
 691                                              NULL);
 692 }
 693
 694
 695 /**
 696  * Handlers, for diverse services
 697  */
 698 static struct GNUNET_MESH_MessageHandler handlers[] = {
 699   {&data_callback, 1, sizeof (struct GNUNET_MessageHeader)},
 700   {NULL, 0, 0}
 701 };
 702
 703
 704 /**
 705  * Method called whenever another peer has added us to a channel
 706  * the other peer initiated.
 707  *
 708  * @param cls Closure.
 709  * @param channel New handle to the channel.
 710  * @param initiator Peer that started the channel.
 711  * @param port Port this channel is connected to.
 712  * @param options channel option flags
 713  * @return Initial channel context for the channel
 714  *         (can be NULL -- that's not an error).
 715  */
 716 static void *
 717 incoming_channel (void *cls, struct GNUNET_MESH_Channel *channel,
 718                  const struct GNUNET_PeerIdentity *initiator,
 719                  uint32_t port, enum GNUNET_MESH_ChannelOption options)
 720 {
 721   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 722               "Incoming channel from %s to peer %d\n",
 723               GNUNET_i2s (initiator), (long) cls);
 724   ok++;
 725   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 726   if ((long) cls == 4L)
 727     incoming_ch = channel;
 728   else
 729   {
 730     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 731                 "Incoming channel for unknown client %lu\n", (long) cls);
 732     GNUNET_break(0);
 733   }
 734   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 735   {
 736     GNUNET_SCHEDULER_cancel (disconnect_task);
 737     if (KEEPALIVE == test)
 738     {
 739       struct GNUNET_TIME_Relative delay;
 740       delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS , 5);
 741       disconnect_task =
 742         GNUNET_SCHEDULER_add_delayed (delay, &check_keepalives, NULL);
 743     }
 744     else
 745       disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 746                                                       &disconnect_mesh_peers,
 747                                                       (void *) __LINE__);
 748   }
 749
 750   return NULL;
 751 }
 752
 753 /**
 754  * Function called whenever an inbound channel is destroyed.  Should clean up
 755  * any associated state.
 756  *
 757  * @param cls closure (set from GNUNET_MESH_connect)
 758  * @param channel connection to the other end (henceforth invalid)
 759  * @param channel_ctx place where local state associated
 760  *                   with the channel is stored
 761  */
 762 static void
 763 channel_cleaner (void *cls, const struct GNUNET_MESH_Channel *channel,
 764                  void *channel_ctx)
 765 {
 766   long i = (long) cls;
 767
 768   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 769               "Incoming channel disconnected at peer %d\n",
 770               i);
 771   if (4L == i)
 772   {
 773     ok++;
 774     GNUNET_break (channel == incoming_ch);
 775     incoming_ch = NULL;
 776   }
 777   else if (0L == i)
 778   {
 779     if (P2P_SIGNAL == test)
 780     {
 781       ok ++;
 782     }
 783     GNUNET_break (channel == ch);
 784     ch = NULL;
 785   }
 786   else
 787     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 788                 "Unknown peer! %d\n", i);
 789   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 790
 791   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 792   {
 793     GNUNET_SCHEDULER_cancel (disconnect_task);
 794     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 795                                                 (void *) __LINE__);
 796   }
 797
 798   return;
 799 }
 800
 801
 802 /**
 803  * START THE TESTCASE ITSELF, AS WE ARE CONNECTED TO THE MESH SERVICES.
 804  *
 805  * Testcase continues when the root receives confirmation of connected peers,
 806  * on callback funtion ch.
 807  *
 808  * @param cls Closure (unsued).
 809  * @param tc Task Context.
 810  */
 811 static void
 812 do_test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 813 {
 814   enum GNUNET_MESH_ChannelOption flags;
 815
 816   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 817     return;
 818
 819   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test_task\n");
 820
 821   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 822   {
 823     GNUNET_SCHEDULER_cancel (disconnect_task);
 824   }
 825
 826   flags = GNUNET_MESH_OPTION_DEFAULT;
 827   if (SPEED_REL == test)
 828   {
 829     test = SPEED;
 830     flags |= GNUNET_MESH_OPTION_RELIABLE;
 831   }
 832   ch = GNUNET_MESH_channel_create (h1, NULL, p_id[1], 1, flags);
 833
 834   disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 835                                                   &disconnect_mesh_peers,
 836                                                   (void *) __LINE__);
 837   if (KEEPALIVE == test)
 838     return; /* Don't send any data. */
 839
 840   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 841               "Sending data initializer...\n");
 842   data_ack = 0;
 843   data_received = 0;
 844   data_sent = 0;
 845   GNUNET_MESH_notify_transmit_ready (ch, GNUNET_NO,
 846                                      GNUNET_TIME_UNIT_FOREVER_REL,
 847                                      size_payload, &tmt_rdy, (void *) 1L);
 848 }
 849
 850 /**
 851  * Callback to be called when the requested peer information is available
 852  *
 853  * @param cls the closure from GNUNET_TESTBED_peer_get_information()
 854  * @param op the operation this callback corresponds to
 855  * @param pinfo the result; will be NULL if the operation has failed
 856  * @param emsg error message if the operation has failed;
 857  *             NULL if the operation is successfull
 858  */
 859 static void
 860 pi_cb (void *cls,
 861        struct GNUNET_TESTBED_Operation *op,
 862        const struct GNUNET_TESTBED_PeerInformation *pinfo,
 863        const char *emsg)
 864 {
 865   long i = (long) cls;
 866
 867   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "id callback for %ld\n", i);
 868
 869   if (NULL == pinfo || NULL != emsg)
 870   {
 871     GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "pi_cb: %s\n", emsg);
 872     abort_test (__LINE__);
 873     return;
 874   }
 875   p_id[i] = pinfo->result.id;
 876   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "  id: %s\n", GNUNET_i2s (p_id[i]));
 877   p_ids++;
 878   if (p_ids < 2)
 879     return;
 880   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got all IDs, starting test\n");
 881   test_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
 882                                             &do_test, NULL);
 883 }
 884
 885 /**
 886  * test main: start test when all peers are connected
 887  *
 888  * @param cls Closure.
 889  * @param ctx Argument to give to GNUNET_MESH_TEST_cleanup on test end.
 890  * @param num_peers Number of peers that are running.
 891  * @param peers Array of peers.
 892  * @param meshes Handle to each of the MESHs of the peers.
 893  */
 894 static void
 895 tmain (void *cls,
 896        struct GNUNET_MESH_TEST_Context *ctx,
 897        unsigned int num_peers,
 898        struct GNUNET_TESTBED_Peer **peers,
 899        struct GNUNET_MESH_Handle **meshes)
 900 {
 901   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test main\n");
 902   ok = 0;
 903   test_ctx = ctx;
 904   peers_running = num_peers;
 905   testbed_peers = peers;
 906   h1 = meshes[0];
 907   h2 = meshes[num_peers - 1];
 908   disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 909                                                   &disconnect_mesh_peers,
 910                                                   (void *) __LINE__);
 911   shutdown_handle = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
 912                                                   &shutdown_task, NULL);
 913   t_op[0] = GNUNET_TESTBED_peer_get_information (peers[0],
 914                                                  GNUNET_TESTBED_PIT_IDENTITY,
 915                                                  &pi_cb, (void *) 0L);
 916   t_op[1] = GNUNET_TESTBED_peer_get_information (peers[num_peers - 1],
 917                                                  GNUNET_TESTBED_PIT_IDENTITY,
 918                                                  &pi_cb, (void *) 1L);
 919   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "requested peer ids\n");
 920 }
 921
 922
 923 /**
 924  * Main: start test
 925  */
 926 int
 927 main (int argc, char *argv[])
 928 {
 929   initialized = GNUNET_NO;
 930   uint32_t ports[2];
 931   const char *config_file;
 932
 933   GNUNET_log_setup ("test", "DEBUG", NULL);
 934   config_file = "test_mesh.conf";
 935
 936   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Start\n");
 937   if (strstr (argv[0], "_small_forward") != NULL)
 938   {
 939     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "FORWARD\n");
 940     test = FORWARD;
 941     test_name = "unicast";
 942     ok_goal = 4;
 943   }
 944   else if (strstr (argv[0], "_small_signal") != NULL)
 945   {
 946     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SIGNAL\n");
 947     test = P2P_SIGNAL;
 948     test_name = "signal";
 949     ok_goal = 4;
 950   }
 951   else if (strstr (argv[0], "_small_speed_ack") != NULL)
 952   {
 953     /* Test is supposed to generate the following callbacks:
 954      * 1 incoming channel (@dest)
 955      * TOTAL_PACKETS received data packet (@dest)
 956      * TOTAL_PACKETS received data packet (@orig)
 957      * 1 received channel destroy (@dest)
 958      */
 959     ok_goal = TOTAL_PACKETS * 2 + 2;
 960     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SPEED_ACK\n");
 961     test = SPEED_ACK;
 962     test_name = "speed ack";
 963   }
 964   else if (strstr (argv[0], "_small_speed") != NULL)
 965   {
 966     /* Test is supposed to generate the following callbacks:
 967      * 1 incoming channel (@dest)
 968      * 1 initial packet (@dest)
 969      * TOTAL_PACKETS received data packet (@dest)
 970      * 1 received data packet (@orig)
 971      * 1 received channel destroy (@dest)
 972      */
 973     ok_goal = TOTAL_PACKETS + 4;
 974     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SPEED\n");
 975     if (strstr (argv[0], "_reliable") != NULL)
 976     {
 977       test = SPEED_REL;
 978       test_name = "speed reliable";
 979       config_file = "test_mesh_drop.conf";
 980     }
 981     else
 982     {
 983       test = SPEED;
 984       test_name = "speed";
 985     }
 986   }
 987   else if (strstr (argv[0], "_keepalive") != NULL)
 988   {
 989     test = KEEPALIVE;
 990     /* Test is supposed to generate the following callbacks:
 991      * 1 incoming channel (@dest)
 992      * [wait]
 993      * 1 received channel destroy (@dest)
 994      */
 995     ok_goal = 2;
 996   }
 997   else
 998   {
 999     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "UNKNOWN\n");
1000     test = SETUP;
1001     ok_goal = 0;
1002   }
1003
1004   if (strstr (argv[0], "backwards") != NULL)
1005   {
1006     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "BACKWARDS (LEAF TO ROOT)\n");
1007     test_backwards = GNUNET_YES;
1008     GNUNET_asprintf (&test_name, "backwards %s", test_name);
1009   }
1010
1011   p_ids = 0;
1012   ports[0] = 1;
1013   ports[1] = 0;
1014   GNUNET_MESH_TEST_run ("test_mesh_small",
1015                         config_file,
1016                         5,
1017                         &tmain,
1018                         NULL, /* tmain cls */
1019                         &incoming_channel,
1020                         &channel_cleaner,
1021                         handlers,
1022                         ports);
1023
1024   if (ok_goal > ok)
1025   {
1026     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1027                 "FAILED! (%d/%d)\n", ok, ok_goal);
1028     return 1;
1029   }
1030   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "success\n");
1031   return 0;
1032 }
1033
1034 /* end of test_mesh_small.c */
1035