src/mesh/test_mesh2_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_mesh2_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_mesh2_service.h"
  29 #include <gauger.h>
  30
  31
  32 /**
  33  * How namy messages to send
  34  */
  35 #define TOTAL_PACKETS 1000
  36
  37 /**
  38  * How long until we give up on connecting the peers?
  39  */
  40 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 120)
  41
  42 /**
  43  * Time to wait for stuff that should be rather fast
  44  */
  45 #define SHORT_TIME GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 20)
  46
  47 /**
  48  * DIFFERENT TESTS TO RUN
  49  */
  50 #define SETUP 0
  51 #define UNICAST 1
  52 #define SPEED 3
  53 #define SPEED_ACK 4
  54 #define SPEED_MIN 5
  55 #define SPEED_NOBUF 6
  56 #define P2P_SIGNAL 10
  57
  58 /**
  59  * Which test are we running?
  60  */
  61 static int test;
  62
  63 /**
  64  * String with test name
  65  */
  66 char *test_name;
  67
  68 /**
  69  * Flag to send traffic leaf->root in speed tests to test BCK_ACK logic.
  70  */
  71 static int test_backwards = GNUNET_NO;
  72
  73 /**
  74  * How many events have happened
  75  */
  76 static int ok;
  77
  78  /**
  79   * Each peer is supposed to generate the following callbacks:
  80   * 1 incoming tunnel (@dest)
  81   * 1 connected peer (@orig)
  82   * 1 received data packet (@dest)
  83   * 1 received data packet (@orig)
  84   * 1 received tunnel destroy (@dest)
  85   * _________________________________
  86   * 5 x ok expected per peer
  87   */
  88 int ok_goal;
  89
  90
  91 /**
  92  * Size of each test packet
  93  */
  94 size_t size_payload = sizeof (struct GNUNET_MessageHeader) + sizeof (uint32_t);
  95
  96 /**
  97  * Operation to get peer ids.
  98  */
  99 struct GNUNET_TESTBED_Operation *t_op[3];
 100
 101 /**
 102  * Peer ids.
 103  */
 104 struct GNUNET_PeerIdentity *p_id[3];
 105
 106 /**
 107  * Peer ids counter.
 108  */
 109 unsigned int p_ids;
 110
 111 /**
 112  * Is the setup initialized?
 113  */
 114 static int initialized;
 115
 116 /**
 117  * Peers that have been connected
 118  */
 119 static int peers_in_tunnel;
 120
 121 /**
 122  * Peers that have responded
 123  */
 124 static int peers_responded;
 125
 126 /**
 127  * Number of payload packes sent
 128  */
 129 static int data_sent;
 130
 131 /**
 132  * Number of payload packets received
 133  */
 134 static int data_received;
 135
 136 /**
 137  * Number of payload packed explicitly (app level) acknowledged
 138  */
 139 static int data_ack;
 140
 141 /**
 142  * Total number of currently running peers.
 143  */
 144 static unsigned long long peers_running;
 145
 146 /**
 147  * Test context (to shut down).
 148  */
 149 struct GNUNET_MESH_TEST_Context *test_ctx;
 150
 151 /**
 152  * Task called to disconnect peers.
 153  */
 154 static GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
 155
 156 /**
 157  * Task To perform tests
 158  */
 159 static GNUNET_SCHEDULER_TaskIdentifier test_task;
 160
 161 /**
 162  * Task called to shutdown test.
 163  */
 164 static GNUNET_SCHEDULER_TaskIdentifier shutdown_handle;
 165
 166 /**
 167  * Mesh handle for the root peer
 168  */
 169 static struct GNUNET_MESH_Handle *h1;
 170
 171 /**
 172  * Mesh handle for the first leaf peer
 173  */
 174 static struct GNUNET_MESH_Handle *h2;
 175
 176 /**
 177  * Mesh handle for the second leaf peer
 178  */
 179 static struct GNUNET_MESH_Handle *h3;
 180
 181 /**
 182  * Tunnel handle for the root peer
 183  */
 184 static struct GNUNET_MESH_Tunnel *t;
 185
 186 /**
 187  * Tunnel handle for the first leaf peer
 188  */
 189 static struct GNUNET_MESH_Tunnel *incoming_t;
 190
 191 /**
 192  * Tunnel handle for the second leaf peer
 193  */
 194 static struct GNUNET_MESH_Tunnel *incoming_t2;
 195
 196 /**
 197  * Time we started the data transmission (after tunnel has been established
 198  * and initilized).
 199  */
 200 static struct GNUNET_TIME_Absolute start_time;
 201
 202
 203 /**
 204  * Show the results of the test (banwidth acheived) and log them to GAUGER
 205  */
 206 static void
 207 show_end_data (void)
 208 {
 209   static struct GNUNET_TIME_Absolute end_time;
 210   static struct GNUNET_TIME_Relative total_time;
 211
 212   end_time = GNUNET_TIME_absolute_get();
 213   total_time = GNUNET_TIME_absolute_get_difference(start_time, end_time);
 214   FPRINTF (stderr, "\nResults of test \"%s\"\n", test_name);
 215   FPRINTF (stderr, "Test time %llu ms\n",
 216             (unsigned long long) total_time.rel_value);
 217   FPRINTF (stderr, "Test bandwidth: %f kb/s\n",
 218             4 * TOTAL_PACKETS * 1.0 / total_time.rel_value); // 4bytes * ms
 219   FPRINTF (stderr, "Test throughput: %f packets/s\n\n",
 220             TOTAL_PACKETS * 1000.0 / total_time.rel_value); // packets * ms
 221   GAUGER ("MESH", test_name,
 222           TOTAL_PACKETS * 1000.0 / total_time.rel_value,
 223           "packets/s");
 224 }
 225
 226
 227 /**
 228  * Shut down peergroup, clean up.
 229  *
 230  * @param cls Closure (unused).
 231  * @param tc Task Context.
 232  */
 233 static void
 234 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 235 {
 236   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Ending test.\n");
 237   shutdown_handle = GNUNET_SCHEDULER_NO_TASK;
 238 }
 239
 240
 241 /**
 242  * Disconnect from mesh services af all peers, call shutdown.
 243  *
 244  * @param cls Closure (unused).
 245  * @param tc Task Context.
 246  */
 247 static void
 248 disconnect_mesh_peers (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 249 {
 250   long line = (long) cls;
 251   unsigned int i;
 252
 253   for (i = 0; i < 3; i++)
 254     if (NULL != t_op[i])
 255     {
 256       GNUNET_TESTBED_operation_done (t_op[i]);
 257       t_op[i] = NULL;
 258     }
 259   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 260               "disconnecting mesh service of peers, called from line %ld\n",
 261               line);
 262   disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 263   if (NULL != t)
 264   {
 265     GNUNET_MESH_tunnel_destroy (t);
 266     t = NULL;
 267   }
 268   if (NULL != incoming_t)
 269   {
 270     GNUNET_MESH_tunnel_destroy (incoming_t);
 271     incoming_t = NULL;
 272   }
 273   if (NULL != incoming_t2)
 274   {
 275     GNUNET_MESH_tunnel_destroy (incoming_t2);
 276     incoming_t2 = NULL;
 277   }
 278   GNUNET_MESH_TEST_cleanup (test_ctx);
 279   if (GNUNET_SCHEDULER_NO_TASK != shutdown_handle)
 280   {
 281     GNUNET_SCHEDULER_cancel (shutdown_handle);
 282   }
 283   shutdown_handle = GNUNET_SCHEDULER_add_now (&shutdown_task, NULL);
 284 }
 285
 286
 287 /**
 288  * Abort test: schedule disconnect and shutdown immediately
 289  *
 290  * @param line Line in the code the abort is requested from (__LINE__).
 291  */
 292 void
 293 abort_test (long line)
 294 {
 295   if (disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 296   {
 297     GNUNET_SCHEDULER_cancel (disconnect_task);
 298   }
 299   disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 300                                                   &disconnect_mesh_peers,
 301                                                   (void *) line);
 302 }
 303
 304 /**
 305  * Transmit ready callback.
 306  *
 307  * @param cls Closure (message type).
 308  * @param size Size of the tranmist buffer.
 309  * @param buf Pointer to the beginning of the buffer.
 310  *
 311  * @return Number of bytes written to buf.
 312  */
 313 static size_t
 314 tmt_rdy (void *cls, size_t size, void *buf);
 315
 316
 317 /**
 318  * Task to schedule a new data transmission.
 319  *
 320  * @param cls Closure (peer #).
 321  * @param tc Task Context.
 322  */
 323 static void
 324 data_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 325 {
 326   struct GNUNET_MESH_TransmitHandle *th;
 327   struct GNUNET_MESH_Tunnel *tunnel;
 328   struct GNUNET_PeerIdentity *destination;
 329
 330   if ((GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason) != 0)
 331     return;
 332
 333   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Data task\n");
 334   if (GNUNET_YES == test_backwards)
 335   {
 336     tunnel = incoming_t;
 337     destination = p_id[0];
 338   }
 339   else
 340   {
 341     tunnel = t;
 342     destination = p_id[2];
 343   }
 344   th = GNUNET_MESH_notify_transmit_ready (tunnel, GNUNET_NO,
 345                                           GNUNET_TIME_UNIT_FOREVER_REL,
 346                                           destination,
 347                                           size_payload,
 348                                           &tmt_rdy, (void *) 1L);
 349   if (NULL == th)
 350   {
 351     unsigned long i = (unsigned long) cls;
 352
 353     GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Retransmission\n");
 354     if (0 == i)
 355     {
 356       GNUNET_log (GNUNET_ERROR_TYPE_INFO, "  in 1 ms\n");
 357       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MILLISECONDS,
 358                                     &data_task, (void *)1UL);
 359     }
 360     else
 361     {
 362       i++;
 363       GNUNET_log (GNUNET_ERROR_TYPE_INFO, "in %u ms\n", i);
 364       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(
 365                                       GNUNET_TIME_UNIT_MILLISECONDS,
 366                                       i),
 367                                     &data_task, (void *)i);
 368     }
 369   }
 370 }
 371
 372
 373 /**
 374  * Transmit ready callback
 375  *
 376  * @param cls Closure (message type).
 377  * @param size Size of the buffer we have.
 378  * @param buf Buffer to copy data to.
 379  */
 380 size_t
 381 tmt_rdy (void *cls, size_t size, void *buf)
 382 {
 383   struct GNUNET_MessageHeader *msg = buf;
 384   uint32_t *data;
 385
 386   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 387               " tmt_rdy called\n");
 388   if (size < size_payload || NULL == buf)
 389   {
 390     GNUNET_break (0);
 391     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 392                 "size %u, buf %p, data_sent %u, data_received %u\n",
 393                 size,
 394                 buf,
 395                 data_sent,
 396                 data_received);
 397     return 0;
 398   }
 399   msg->size = htons (size);
 400   msg->type = htons ((long) cls);
 401   data = (uint32_t *) &msg[1];
 402   *data = htonl (data_sent);
 403   if (SPEED == test && GNUNET_YES == initialized)
 404   {
 405     data_sent++;
 406     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 407               " Sent packet %d\n", data_sent);
 408     if (data_sent < TOTAL_PACKETS)
 409     {
 410       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 411               " Scheduling packet %d\n", data_sent + 1);
 412       GNUNET_SCHEDULER_add_now(&data_task, NULL);
 413     }
 414   }
 415   return size_payload;
 416 }
 417
 418
 419 /**
 420  * Function is called whenever a message is received.
 421  *
 422  * @param cls closure (set from GNUNET_MESH_connect)
 423  * @param tunnel connection to the other end
 424  * @param tunnel_ctx place to store local state associated with the tunnel
 425  * @param sender who sent the message
 426  * @param message the actual message
 427  * @param atsi performance data for the connection
 428  * @return GNUNET_OK to keep the connection open,
 429  *         GNUNET_SYSERR to close it (signal serious error)
 430  */
 431 int
 432 data_callback (void *cls, struct GNUNET_MESH_Tunnel *tunnel, void **tunnel_ctx,
 433                const struct GNUNET_PeerIdentity *sender,
 434                const struct GNUNET_MessageHeader *message,
 435                const struct GNUNET_ATS_Information *atsi)
 436 {
 437   long client = (long) cls;
 438   long expected_target_client;
 439   uint32_t *data;
 440
 441   ok++;
 442
 443   if ((ok % 20) == 0)
 444   {
 445     if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 446     {
 447       GNUNET_SCHEDULER_cancel (disconnect_task);
 448     }
 449     disconnect_task =
 450               GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers,
 451                                             (void *) __LINE__);
 452   }
 453
 454   switch (client)
 455   {
 456   case 0L:
 457     GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Root client got a message!\n");
 458     peers_responded++;
 459     break;
 460   case 3L:
 461   case 4L:
 462     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 463                 "Leaf client %li got a message.\n",
 464                 client);
 465     client = 4L;
 466     break;
 467   default:
 468     GNUNET_assert (0);
 469     break;
 470   }
 471   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: (%d/%d)\n", ok, ok_goal);
 472   data = (uint32_t *) &message[1];
 473   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " payload: (%u)\n", ntohl (*data));
 474   if (SPEED == test && GNUNET_YES == test_backwards)
 475   {
 476     expected_target_client = 0L;
 477   }
 478   else
 479   {
 480     expected_target_client = 4L;
 481   }
 482
 483   if (GNUNET_NO == initialized)
 484   {
 485     initialized = GNUNET_YES;
 486     start_time = GNUNET_TIME_absolute_get ();
 487     if (SPEED == test)
 488     {
 489       GNUNET_assert (4L == client);
 490       GNUNET_SCHEDULER_add_now (&data_task, NULL);
 491       return GNUNET_OK;
 492     }
 493   }
 494
 495   if (client == expected_target_client) // Normally 3 or 4
 496   {
 497     data_received++;
 498     GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 499                 " received data %u\n", data_received);
 500     if (SPEED != test || (ok_goal - 2) == ok)
 501     {
 502       GNUNET_MESH_notify_transmit_ready (tunnel, GNUNET_NO,
 503                                         GNUNET_TIME_UNIT_FOREVER_REL, sender,
 504                                                size_payload,
 505                                         &tmt_rdy, (void *) 1L);
 506       return GNUNET_OK;
 507     }
 508     else
 509     {
 510       if (data_received < TOTAL_PACKETS)
 511         return GNUNET_OK;
 512     }
 513   }
 514   else // Normally 0
 515   {
 516     if (test == SPEED_ACK || test == SPEED)
 517     {
 518       data_ack++;
 519       GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 520               " received ack %u\n", data_ack);
 521       GNUNET_MESH_notify_transmit_ready (tunnel, GNUNET_NO,
 522                                         GNUNET_TIME_UNIT_FOREVER_REL, sender,
 523                                                size_payload,
 524                                         &tmt_rdy, (void *) 1L);
 525       if (data_ack < TOTAL_PACKETS && SPEED != test)
 526         return GNUNET_OK;
 527       if (ok == 2 && SPEED == test)
 528         return GNUNET_OK;
 529       show_end_data();
 530     }
 531     if (test == P2P_SIGNAL)
 532     {
 533       GNUNET_MESH_tunnel_destroy (incoming_t);
 534       incoming_t = NULL;
 535     }
 536     else
 537     {
 538       GNUNET_MESH_tunnel_destroy (t);
 539       t = NULL;
 540     }
 541   }
 542
 543   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 544   {
 545     GNUNET_SCHEDULER_cancel (disconnect_task);
 546   }
 547   disconnect_task =
 548         GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers,
 549                                       (void *) __LINE__);
 550
 551   return GNUNET_OK;
 552 }
 553
 554
 555 /**
 556  * Handlers, for diverse services
 557  */
 558 static struct GNUNET_MESH_MessageHandler handlers[] = {
 559   {&data_callback, 1, sizeof (struct GNUNET_MessageHeader)},
 560   {NULL, 0, 0}
 561 };
 562
 563
 564 /**
 565  * Method called whenever another peer has added us to a tunnel
 566  * the other peer initiated.
 567  *
 568  * @param cls closure
 569  * @param tunnel new handle to the tunnel
 570  * @param initiator peer that started the tunnel
 571  * @param atsi performance information for the tunnel
 572  * @return initial tunnel context for the tunnel
 573  *         (can be NULL -- that's not an error)
 574  */
 575 static void *
 576 incoming_tunnel (void *cls, struct GNUNET_MESH_Tunnel *tunnel,
 577                  const struct GNUNET_PeerIdentity *initiator,
 578                  const struct GNUNET_ATS_Information *atsi)
 579 {
 580   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 581               "Incoming tunnel from %s to peer %d\n",
 582               GNUNET_i2s (initiator), (long) cls);
 583   ok++;
 584   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 585   if ((long) cls == 4L)
 586     incoming_t = tunnel;
 587   else if ((long) cls == 3L)
 588     incoming_t2 = tunnel;
 589   else
 590   {
 591     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 592                 "Incoming tunnel for unknown client %lu\n", (long) cls);
 593     GNUNET_break(0);
 594   }
 595   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 596   {
 597     GNUNET_SCHEDULER_cancel (disconnect_task);
 598   }
 599   disconnect_task =
 600         GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers,
 601                                       (void *) __LINE__);
 602
 603   return NULL;
 604 }
 605
 606 /**
 607  * Function called whenever an inbound tunnel is destroyed.  Should clean up
 608  * any associated state.
 609  *
 610  * @param cls closure (set from GNUNET_MESH_connect)
 611  * @param tunnel connection to the other end (henceforth invalid)
 612  * @param tunnel_ctx place where local state associated
 613  *                   with the tunnel is stored
 614  */
 615 static void
 616 tunnel_cleaner (void *cls, const struct GNUNET_MESH_Tunnel *tunnel,
 617                 void *tunnel_ctx)
 618 {
 619   long i = (long) cls;
 620
 621   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 622               "Incoming tunnel disconnected at peer %d\n",
 623               i);
 624   if (4L == i)
 625   {
 626     ok++;
 627     incoming_t = NULL;
 628   }
 629   else if (3L == i)
 630   {
 631     ok++;
 632     incoming_t2 = NULL;
 633   }
 634   else
 635     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 636                 "Unknown peer! %d\n", i);
 637   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 638   peers_in_tunnel--;
 639   if (peers_in_tunnel > 0)
 640     return;
 641
 642   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 643   {
 644     GNUNET_SCHEDULER_cancel (disconnect_task);
 645   }
 646   disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 647                                               (void *) __LINE__);
 648
 649   return;
 650 }
 651
 652
 653 /**
 654  * Method called whenever a tunnel falls apart.
 655  *
 656  * @param cls closure
 657  * @param peer peer identity the tunnel stopped working with
 658  */
 659 static void
 660 dh (void *cls, const struct GNUNET_PeerIdentity *peer)
 661 {
 662   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 663               "peer %s disconnected\n",
 664               GNUNET_i2s (peer));
 665   if (P2P_SIGNAL == test)
 666   {
 667     ok ++;
 668     if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 669     {
 670       GNUNET_SCHEDULER_cancel (disconnect_task);
 671     }
 672     disconnect_task = GNUNET_SCHEDULER_add_now (&disconnect_mesh_peers,
 673                                                 (void *) __LINE__);
 674   }
 675   return;
 676 }
 677
 678
 679 /**
 680  * Method called whenever a peer connects to a tunnel.
 681  *
 682  * @param cls closure
 683  * @param peer peer identity the tunnel was created to, NULL on timeout
 684  * @param atsi performance data for the connection
 685  */
 686 static void
 687 ch (void *cls, const struct GNUNET_PeerIdentity *peer,
 688     const struct GNUNET_ATS_Information *atsi)
 689 {
 690   long i = (long) cls;
 691
 692   struct GNUNET_PeerIdentity *dest;
 693
 694   GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 695               "%ld peer %s connected\n", i, GNUNET_i2s (peer));
 696
 697   if (0 == memcmp (p_id[2], peer, sizeof (struct GNUNET_PeerIdentity)) &&
 698       i == 0L)
 699   {
 700     ok++;
 701   }
 702   GNUNET_log (GNUNET_ERROR_TYPE_INFO, " ok: %d\n", ok);
 703   switch (test)
 704   {
 705     case UNICAST:
 706     case P2P_SIGNAL:
 707     case SPEED:
 708     case SPEED_ACK:
 709       // incoming_t is NULL unless we send a relevant data packet
 710       dest = p_id[2];
 711       break;
 712     default:
 713       GNUNET_assert (0);
 714       return;
 715   }
 716   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 717   {
 718     GNUNET_SCHEDULER_cancel (disconnect_task);
 719     disconnect_task =
 720         GNUNET_SCHEDULER_add_delayed (SHORT_TIME, &disconnect_mesh_peers,
 721                                       (void *) __LINE__);
 722     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 723                 "Sending data initializer...\n");
 724     peers_responded = 0;
 725     data_ack = 0;
 726     data_received = 0;
 727     data_sent = 0;
 728     GNUNET_MESH_notify_transmit_ready (t, GNUNET_NO,
 729                                        GNUNET_TIME_UNIT_FOREVER_REL, dest,
 730                                            size_payload,
 731                                        &tmt_rdy, (void *) 1L);
 732   }
 733   else
 734   {
 735     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 736                 "Disconnect already run?\n");
 737     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 738                 "Aborting...\n");
 739   }
 740   return;
 741 }
 742
 743
 744 /**
 745  * START THE TESTCASE ITSELF, AS WE ARE CONNECTED TO THE MESH SERVICES.
 746  *
 747  * Testcase continues when the root receives confirmation of connected peers,
 748  * on callback funtion ch.
 749  *
 750  * @param cls Closure (unsued).
 751  * @param tc Task Context.
 752  */
 753 static void
 754 do_test (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
 755 {
 756   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test_task\n");
 757   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "add peer 2\n");
 758   GNUNET_MESH_peer_request_connect_add (t, p_id[2]);
 759
 760   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 761               "schedule timeout in TIMEOUT\n");
 762   if (GNUNET_SCHEDULER_NO_TASK != disconnect_task)
 763   {
 764     GNUNET_SCHEDULER_cancel (disconnect_task);
 765   }
 766   disconnect_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
 767                                                   &disconnect_mesh_peers,
 768                                                   (void *) __LINE__);
 769 }
 770
 771 /**
 772  * Callback to be called when the requested peer information is available
 773  *
 774  * @param cls the closure from GNUNET_TESTBED_peer_get_information()
 775  * @param op the operation this callback corresponds to
 776  * @param pinfo the result; will be NULL if the operation has failed
 777  * @param emsg error message if the operation has failed;
 778  *             NULL if the operation is successfull
 779  */
 780 void
 781 pi_cb (void *cls,
 782        struct GNUNET_TESTBED_Operation *op,
 783        const struct GNUNET_TESTBED_PeerInformation *pinfo,
 784        const char *emsg)
 785 {
 786   long i = (long) cls;
 787
 788   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "id callback for %ld\n", i);
 789   if (NULL == pinfo || NULL != emsg)
 790   {
 791     GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "pi_cb: %s\n", emsg);
 792     abort_test (__LINE__);
 793     return;
 794   }
 795   p_id[i] = pinfo->result.id;
 796   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "  id: %s\n", GNUNET_i2s (p_id[i]));
 797   p_ids++;
 798   if (p_ids < 2)
 799     return;
 800   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Got all IDs, starting test\n");
 801   test_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
 802                                             &do_test, NULL);
 803 }
 804
 805 /**
 806  * test main: start test when all peers are connected
 807  *
 808  * @param cls Closure.
 809  * @param ctx Argument to give to GNUNET_MESH_TEST_cleanup on test end.
 810  * @param num_peers Number of peers that are running.
 811  * @param peers Array of peers.
 812  * @param meshes Handle to each of the MESHs of the peers.
 813  */
 814 static void
 815 tmain (void *cls,
 816        struct GNUNET_MESH_TEST_Context *ctx,
 817        unsigned int num_peers,
 818        struct GNUNET_TESTBED_Peer **peers,
 819        struct GNUNET_MESH_Handle **meshes)
 820 {
 821   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "test main\n");
 822   ok = 0;
 823   test_ctx = ctx;
 824   peers_running = num_peers;
 825   h1 = meshes[0];
 826   h2 = meshes[num_peers - 1];
 827   t = GNUNET_MESH_tunnel_create (h1, NULL, &ch, &dh, (void *) 0L);
 828   if (SPEED_MIN == test)
 829   {
 830     GNUNET_MESH_tunnel_speed_min(t);
 831     test = SPEED;
 832   }
 833   if (SPEED_NOBUF == test)
 834   {
 835     GNUNET_MESH_tunnel_buffer(t, GNUNET_NO);
 836     test = SPEED;
 837   }
 838   peers_in_tunnel = 0;
 839   disconnect_task = GNUNET_SCHEDULER_add_delayed (SHORT_TIME,
 840                                                   &disconnect_mesh_peers,
 841                                                   (void *) __LINE__);
 842   shutdown_handle = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
 843                                                   &shutdown_task, NULL);
 844   t_op[0] = GNUNET_TESTBED_peer_get_information (peers[0],
 845                                                  GNUNET_TESTBED_PIT_IDENTITY,
 846                                                  &pi_cb, (void *) 0L);
 847   t_op[2] = GNUNET_TESTBED_peer_get_information (peers[num_peers - 1],
 848                                                  GNUNET_TESTBED_PIT_IDENTITY,
 849                                                  &pi_cb, (void *) 2L);
 850   t_op[1] = NULL;
 851   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "requested peer ids\n");
 852 }
 853
 854
 855 /**
 856  * Main: start test
 857  */
 858 int
 859 main (int argc, char *argv[])
 860 {
 861   initialized = GNUNET_NO;
 862
 863   GNUNET_log_setup ("test", "DEBUG", NULL);
 864
 865   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Start\n");
 866   if (strstr (argv[0], "test_mesh2_small_forward") != NULL)
 867   {
 868     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "UNICAST\n");
 869     test = UNICAST;
 870     test_name = "unicast";
 871     ok_goal = 5;
 872   }
 873   else if (strstr (argv[0], "test_mesh_small_signal") != NULL)
 874   {
 875     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SIGNAL\n");
 876     test = P2P_SIGNAL;
 877     test_name = "signal";
 878     ok_goal = 5;
 879   }
 880   else if (strstr (argv[0], "test_mesh_small_speed_ack") != NULL)
 881   {
 882    /* Each peer is supposed to generate the following callbacks:
 883     * 1 incoming tunnel (@dest)
 884     * 1 connected peer (@orig)
 885     * TOTAL_PACKETS received data packet (@dest)
 886     * TOTAL_PACKETS received data packet (@orig)
 887     * 1 received tunnel destroy (@dest)
 888     * _________________________________
 889     * 5 x ok expected per peer
 890     */
 891     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SPEED_ACK\n");
 892     test = SPEED_ACK;
 893     test_name = "speed ack";
 894     ok_goal = TOTAL_PACKETS * 2 + 3;
 895   }
 896   else if (strstr (argv[0], "test_mesh_small_speed") != NULL)
 897   {
 898    /* Each peer is supposed to generate the following callbacks:
 899     * 1 incoming tunnel (@dest)
 900     * 1 connected peer (@orig)
 901     * 1 initial packet (@dest)
 902     * TOTAL_PACKETS received data packet (@dest)
 903     * 1 received data packet (@orig)
 904     * 1 received tunnel destroy (@dest)
 905     * _________________________________
 906     */
 907     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "SPEED\n");
 908     ok_goal = TOTAL_PACKETS + 5;
 909     if (strstr (argv[0], "_min") != NULL)
 910     {
 911       test = SPEED_MIN;
 912       test_name = "speed min";
 913     }
 914     else if (strstr (argv[0], "_nobuf") != NULL)
 915     {
 916       test = SPEED_NOBUF;
 917       test_name = "speed nobuf";
 918     }
 919     else
 920     {
 921       test = SPEED;
 922       test_name = "speed";
 923     }
 924   }
 925   else
 926   {
 927     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "UNKNOWN\n");
 928     test = SETUP;
 929     ok_goal = 0;
 930   }
 931
 932   if (strstr (argv[0], "backwards") != NULL)
 933   {
 934     char *aux;
 935
 936     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "BACKWARDS (LEAF TO ROOT)\n");
 937     test_backwards = GNUNET_YES;
 938     aux = GNUNET_malloc (32);
 939     sprintf (aux, "backwards %s", test_name);
 940     test_name = aux;
 941   }
 942
 943   p_ids = 0;
 944   GNUNET_MESH_TEST_run ("test_mesh_small",
 945                         "test_mesh_small.conf",
 946                         5,
 947                         &tmain,
 948                         NULL,
 949                         &incoming_tunnel,
 950                         &tunnel_cleaner,
 951                         handlers,
 952                         NULL);
 953
 954   if (ok_goal > ok)
 955   {
 956     GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 957                 "FAILED! (%d/%d)\n", ok, ok_goal);
 958     return 1;
 959   }
 960   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "success\n");
 961   return 0;
 962 }
 963
 964 /* end of test_mesh_small.c */