src/dht/test_dht_multipeer.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2009 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 dht/test_dht_multipeer.c
  22  * @brief testcase for testing DHT service with
  23  *        multiple peers.
  24  */
  25 #include "platform.h"
  26 #include "gnunet_testing_lib.h"
  27 #include "gnunet_core_service.h"
  28 #include "gnunet_dht_service.h"
  29
  30 /* DEFINES */
  31 #define VERBOSE GNUNET_YES
  32
  33 /* Timeout for entire testcase */
  34 #define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5)
  35
  36 /* Timeout for waiting for replies to get requests */
  37 #define GET_TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 90)
  38
  39 /* Timeout for waiting for gets to complete */
  40 #define GET_DELAY GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 1)
  41
  42 /* Timeout for waiting for puts to complete */
  43 #define PUT_DELAY GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 1)
  44
  45 #define SECONDS_PER_PEER_START 45
  46
  47 /* If number of peers not in config file, use this number */
  48 #define DEFAULT_NUM_PEERS 5
  49
  50 #define TEST_DATA_SIZE 8
  51
  52 #define MAX_OUTSTANDING_PUTS 10
  53
  54 #define MAX_OUTSTANDING_GETS 10
  55
  56 /* Structs */
  57
  58 struct TestPutContext
  59 {
  60   /**
  61    * This is a linked list
  62    */
  63   struct TestPutContext *next;
  64
  65   /**
  66    * Handle to the first peers DHT service (via the API)
  67    */
  68   struct GNUNET_DHT_Handle *dht_handle;
  69
  70   /**
  71    *  Handle to the PUT peer daemon
  72    */
  73   struct GNUNET_TESTING_Daemon *daemon;
  74
  75   /**
  76    *  Identifier for this PUT
  77    */
  78   uint32_t uid;
  79
  80   /**
  81    * Task for disconnecting DHT handles
  82    */
  83   GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
  84 };
  85
  86 struct TestGetContext
  87 {
  88   /* This is a linked list */
  89   struct TestGetContext *next;
  90
  91   /**
  92    * Handle to the first peers DHT service (via the API)
  93    */
  94   struct GNUNET_DHT_Handle *dht_handle;
  95
  96   /**
  97    * Handle for the DHT get request
  98    */
  99   struct GNUNET_DHT_GetHandle *get_handle;
 100
 101   /**
 102    *  Handle to the GET peer daemon
 103    */
 104   struct GNUNET_TESTING_Daemon *daemon;
 105
 106   /**
 107    *  Identifier for this GET
 108    */
 109   uint32_t uid;
 110
 111   /**
 112    * Task for disconnecting DHT handles (and stopping GET)
 113    */
 114   GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
 115
 116   /**
 117    * Whether or not this request has been fulfilled already.
 118    */
 119   int succeeded;
 120 };
 121
 122 /* Globals */
 123
 124 /**
 125  * List of GETS to perform
 126  */
 127 struct TestGetContext *all_gets;
 128
 129 /**
 130  * List of PUTS to perform
 131  */
 132 struct TestPutContext *all_puts;
 133
 134 /**
 135  * Directory to store temp data in, defined in config file
 136  */
 137 static char *test_directory;
 138
 139 /**
 140  * Variable used to store the number of connections we should wait for.
 141  */
 142 static unsigned int expected_connections;
 143
 144 /**
 145  * Variable used to keep track of how many peers aren't yet started.
 146  */
 147 static unsigned long long peers_left;
 148
 149 /**
 150  * Handle to the set of all peers run for this test.
 151  */
 152 static struct GNUNET_TESTING_PeerGroup *pg;
 153
 154
 155 /**
 156  * Global scheduler, used for all GNUNET_SCHEDULER_* functions.
 157  */
 158 static struct GNUNET_SCHEDULER_Handle *sched;
 159
 160 /**
 161  * Total number of peers to run, set based on config file.
 162  */
 163 static unsigned long long num_peers;
 164
 165 /**
 166  * Total number of items to insert.
 167  */
 168 static unsigned long long num_puts;
 169
 170 /**
 171  * Total number of items to attempt to get.
 172  */
 173 static unsigned long long num_gets;
 174
 175 /**
 176  * How many puts do we currently have in flight?
 177  */
 178 static unsigned long long outstanding_puts;
 179
 180 /**
 181  * How many puts are done?
 182  */
 183 static unsigned long long puts_completed;
 184
 185 /**
 186  * How many puts do we currently have in flight?
 187  */
 188 static unsigned long long outstanding_gets;
 189
 190 /**
 191  * How many gets are done?
 192  */
 193 static unsigned long long gets_completed;
 194
 195 /**
 196  * How many gets failed?
 197  */
 198 static unsigned long long gets_failed;
 199
 200 /**
 201  * Global used to count how many connections we have currently
 202  * been notified about (how many times has topology_callback been called
 203  * with success?)
 204  */
 205 static unsigned int total_connections;
 206
 207 /**
 208  * Global used to count how many failed connections we have
 209  * been notified about (how many times has topology_callback
 210  * been called with failure?)
 211  */
 212 static unsigned int failed_connections;
 213
 214 /* Task handle to use to schedule test failure */
 215 GNUNET_SCHEDULER_TaskIdentifier die_task;
 216
 217 static char *blacklist_transports;
 218
 219 static enum GNUNET_TESTING_Topology topology;
 220
 221 static enum GNUNET_TESTING_Topology blacklist_topology = GNUNET_TESTING_TOPOLOGY_NONE; /* Don't do any blacklisting */
 222
 223 static enum GNUNET_TESTING_Topology connection_topology = GNUNET_TESTING_TOPOLOGY_NONE; /* NONE actually means connect all allowed peers */
 224
 225 static enum GNUNET_TESTING_TopologyOption connect_topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_ALL;
 226
 227 static double connect_topology_option_modifier = 0.0;
 228
 229 /* Global return value (0 for success, anything else for failure) */
 230 static int ok;
 231
 232
 233 /**
 234  * Check whether peers successfully shut down.
 235  */
 236 void shutdown_callback (void *cls,
 237                         const char *emsg)
 238 {
 239   if (emsg != NULL)
 240     {
 241       if (ok == 0)
 242         ok = 2;
 243     }
 244 }
 245
 246 /**
 247  * Task to release DHT handles for PUT
 248  */
 249 static void
 250 put_disconnect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 251 {
 252   struct TestPutContext *test_put = cls;
 253   test_put->disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 254   GNUNET_DHT_disconnect(test_put->dht_handle);
 255   test_put->dht_handle = NULL;
 256 }
 257
 258 /**
 259  * Function scheduled to be run on the successful completion of this
 260  * testcase.
 261  */
 262 static void
 263 finish_testing (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 264 {
 265   GNUNET_assert (pg != NULL);
 266   struct TestPutContext *test_put = all_puts;
 267   struct TestGetContext *test_get = all_gets;
 268
 269   while (test_put != NULL)
 270     {
 271       if (test_put->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 272         GNUNET_SCHEDULER_cancel(sched, test_put->disconnect_task);
 273       if (test_put->dht_handle != NULL)
 274         GNUNET_DHT_disconnect(test_put->dht_handle);
 275       test_put = test_put->next;
 276     }
 277
 278   while (test_get != NULL)
 279     {
 280       if (test_get->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 281         GNUNET_SCHEDULER_cancel(sched, test_get->disconnect_task);
 282       if (test_get->get_handle != NULL)
 283         GNUNET_DHT_get_stop(test_get->get_handle);
 284       if (test_get->dht_handle != NULL)
 285         GNUNET_DHT_disconnect(test_get->dht_handle);
 286       test_get = test_get->next;
 287     }
 288
 289   GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
 290   ok = 0;
 291 }
 292
 293
 294 /**
 295  * Check if the get_handle is being used, if so stop the request.  Either
 296  * way, schedule the end_badly_cont function which actually shuts down the
 297  * test.
 298  */
 299 static void
 300 end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 301 {
 302   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failing test with error: `%s'!\n", (char *)cls);
 303
 304   struct TestPutContext *test_put = all_puts;
 305   struct TestGetContext *test_get = all_gets;
 306
 307   while (test_put != NULL)
 308     {
 309       if (test_put->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 310         GNUNET_SCHEDULER_cancel(sched, test_put->disconnect_task);
 311       if (test_put->dht_handle != NULL)
 312         GNUNET_DHT_disconnect(test_put->dht_handle);
 313       test_put = test_put->next;
 314     }
 315
 316   while (test_get != NULL)
 317     {
 318       if (test_get->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 319         GNUNET_SCHEDULER_cancel(sched, test_get->disconnect_task);
 320       if (test_get->get_handle != NULL)
 321         GNUNET_DHT_get_stop(test_get->get_handle);
 322       if (test_get->dht_handle != NULL)
 323         GNUNET_DHT_disconnect(test_get->dht_handle);
 324       test_get = test_get->next;
 325     }
 326
 327   GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
 328   ok = 1;
 329 }
 330
 331 /**
 332  * Task to release DHT handle associated with GET request.
 333  */
 334 static void
 335 get_stop_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 336 {
 337   struct TestGetContext *test_get = cls;
 338   outstanding_gets--; /* GET is really finished */
 339   GNUNET_DHT_disconnect(test_get->dht_handle);
 340   test_get->dht_handle = NULL;
 341
 342   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%d gets succeeded, %d gets failed!\n", gets_completed, gets_failed);
 343   if ((gets_completed == num_gets) && (outstanding_gets == 0))/* All gets successful */
 344     {
 345       GNUNET_SCHEDULER_cancel (sched, die_task);
 346       //GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5), &get_topology, NULL);
 347       GNUNET_SCHEDULER_add_now(sched, &finish_testing, NULL);
 348     }
 349   else if ((gets_completed + gets_failed == num_gets) && (outstanding_gets == 0)) /* Had some failures */
 350     {
 351       GNUNET_SCHEDULER_cancel(sched, die_task);
 352       GNUNET_SCHEDULER_add_now(sched, &end_badly, "not all gets succeeded!\n");
 353     }
 354 }
 355
 356 /**
 357  * Task to release get handle.
 358  */
 359 static void
 360 get_stop_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 361 {
 362   struct TestGetContext *test_get = cls;
 363   GNUNET_HashCode search_key; /* Key stored under */
 364   char original_data[TEST_DATA_SIZE]; /* Made up data to store */
 365
 366   memset(original_data, test_get->uid, sizeof(original_data));
 367   GNUNET_CRYPTO_hash(original_data, TEST_DATA_SIZE, &search_key);
 368
 369   if (tc->reason == GNUNET_SCHEDULER_REASON_TIMEOUT)
 370     {
 371       gets_failed++;
 372       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Get from peer %s for key %s failed!\n", test_get->daemon->shortname, GNUNET_h2s(&search_key));
 373     }
 374   GNUNET_assert(test_get->get_handle != NULL);
 375   GNUNET_DHT_get_stop(test_get->get_handle);
 376   GNUNET_SCHEDULER_add_now (sched, &get_stop_finished, test_get);
 377   test_get->get_handle = NULL;
 378   test_get->disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 379 }
 380
 381 /**
 382  * Iterator called if the GET request initiated returns a response.
 383  *
 384  * @param cls closure
 385  * @param exp when will this value expire
 386  * @param key key of the result
 387  * @param type type of the result
 388  * @param size number of bytes in data
 389  * @param data pointer to the result data
 390  */
 391 void get_result_iterator (void *cls,
 392                           struct GNUNET_TIME_Absolute exp,
 393                           const GNUNET_HashCode * key,
 394                           const struct GNUNET_PeerIdentity * const *get_path,
 395                           const struct GNUNET_PeerIdentity * const *put_path,
 396                           enum GNUNET_BLOCK_Type type,
 397                           size_t size,
 398                           const void *data)
 399 {
 400   struct TestGetContext *test_get = cls;
 401   GNUNET_HashCode search_key; /* Key stored under */
 402   char original_data[TEST_DATA_SIZE]; /* Made up data to store */
 403
 404   memset(original_data, test_get->uid, sizeof(original_data));
 405   GNUNET_CRYPTO_hash(original_data, TEST_DATA_SIZE, &search_key);
 406
 407   if (test_get->succeeded == GNUNET_YES)
 408     return; /* Get has already been successful, probably ending now */
 409
 410   if ((0 != memcmp(&search_key, key, sizeof (GNUNET_HashCode))) || (0 != memcmp(original_data, data, sizeof(original_data))))
 411     {
 412       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Key or data is not the same as was inserted!\n");
 413     }
 414   else
 415     {
 416       gets_completed++;
 417       test_get->succeeded = GNUNET_YES;
 418     }
 419
 420   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received correct GET response!\n");
 421   GNUNET_SCHEDULER_cancel(sched, test_get->disconnect_task);
 422   GNUNET_SCHEDULER_add_continuation(sched, &get_stop_task, test_get, GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 423 }
 424
 425
 426 /**
 427  * Set up some data, and call API PUT function
 428  */
 429 static void
 430 do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 431 {
 432   struct TestGetContext *test_get = cls;
 433   GNUNET_HashCode key; /* Made up key to store data under */
 434   char data[TEST_DATA_SIZE]; /* Made up data to store */
 435
 436   if (test_get == NULL)
 437     return; /* End of the list */
 438   memset(data, test_get->uid, sizeof(data));
 439   GNUNET_CRYPTO_hash(data, TEST_DATA_SIZE, &key);
 440
 441   if (outstanding_gets > MAX_OUTSTANDING_GETS)
 442     {
 443       GNUNET_SCHEDULER_add_delayed (sched, GET_DELAY, &do_get, test_get);
 444       return;
 445     }
 446
 447   test_get->dht_handle = GNUNET_DHT_connect(sched, test_get->daemon->cfg, 10);
 448   /* Insert the data at the first peer */
 449   GNUNET_assert(test_get->dht_handle != NULL);
 450   outstanding_gets++;
 451   test_get->get_handle = GNUNET_DHT_get_start(test_get->dht_handle,
 452                                               GNUNET_TIME_UNIT_FOREVER_REL,
 453                                               GNUNET_BLOCK_TYPE_TEST,
 454                                               &key,
 455                                               GNUNET_DHT_RO_NONE,
 456                                               NULL, 0,
 457                                               NULL, 0,
 458                                               &get_result_iterator,
 459                                               test_get);
 460 #if VERBOSE
 461   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting get for uid %u from peer %s\n",
 462              test_get->uid,
 463              test_get->daemon->shortname);
 464 #endif
 465   test_get->disconnect_task = GNUNET_SCHEDULER_add_delayed(sched, GET_TIMEOUT, &get_stop_task, test_get);
 466   GNUNET_SCHEDULER_add_now (sched, &do_get, test_get->next);
 467 }
 468
 469 /**
 470  * Called when the PUT request has been transmitted to the DHT service.
 471  * Schedule the GET request for some time in the future.
 472  */
 473 static void
 474 put_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 475 {
 476   struct TestPutContext *test_put = cls;
 477   outstanding_puts--;
 478   puts_completed++;
 479
 480   GNUNET_SCHEDULER_cancel(sched, test_put->disconnect_task);
 481   test_put->disconnect_task = GNUNET_SCHEDULER_add_now(sched, &put_disconnect_task, test_put);
 482   if (puts_completed == num_puts)
 483     {
 484       GNUNET_assert(outstanding_puts == 0);
 485       GNUNET_SCHEDULER_add_delayed(sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 10), &do_get, all_gets);
 486       return;
 487     }
 488 }
 489
 490 /**
 491  * Set up some data, and call API PUT function
 492  */
 493 static void
 494 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 495 {
 496   struct TestPutContext *test_put = cls;
 497   GNUNET_HashCode key; /* Made up key to store data under */
 498   char data[TEST_DATA_SIZE]; /* Made up data to store */
 499
 500   if (test_put == NULL)
 501     return; /* End of list */
 502
 503   memset(data, test_put->uid, sizeof(data));
 504   GNUNET_CRYPTO_hash(data, TEST_DATA_SIZE, &key);
 505
 506   if (outstanding_puts > MAX_OUTSTANDING_PUTS)
 507     {
 508       GNUNET_SCHEDULER_add_delayed (sched, PUT_DELAY, &do_put, test_put);
 509       return;
 510     }
 511
 512 #if VERBOSE
 513     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting put for uid %u from peer %s\n",
 514                test_put->uid,
 515                test_put->daemon->shortname);
 516 #endif
 517   test_put->dht_handle = GNUNET_DHT_connect(sched, test_put->daemon->cfg, 10);
 518
 519   GNUNET_assert(test_put->dht_handle != NULL);
 520   outstanding_puts++;
 521   GNUNET_DHT_put(test_put->dht_handle,
 522                  &key,
 523                  GNUNET_DHT_RO_NONE,
 524                  GNUNET_BLOCK_TYPE_TEST,
 525                  sizeof(data), data,
 526                  GNUNET_TIME_UNIT_FOREVER_ABS,
 527                  GNUNET_TIME_UNIT_FOREVER_REL,
 528                  &put_finished, test_put);
 529   test_put->disconnect_task = GNUNET_SCHEDULER_add_delayed(sched, GNUNET_TIME_relative_get_forever(), &put_disconnect_task, test_put);
 530   GNUNET_SCHEDULER_add_now(sched, &do_put, test_put->next);
 531 }
 532
 533
 534 /**
 535  * Set up some all of the put and get operations we want
 536  * to do.  Allocate data structure for each, add to list,
 537  * then call actual insert functions.
 538  */
 539 static void
 540 setup_puts_and_gets (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 541 {
 542   int i;
 543   uint32_t temp_daemon;
 544   struct TestPutContext *test_put;
 545   struct TestGetContext *test_get;
 546   int remember[num_puts][num_peers];
 547
 548   for (i = 0; i < num_puts; i++)
 549     {
 550       test_put = GNUNET_malloc(sizeof(struct TestPutContext));
 551       test_put->uid = i;
 552       temp_daemon = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_peers);
 553       test_put->daemon = GNUNET_TESTING_daemon_get(pg, temp_daemon);
 554       test_put->next = all_puts;
 555       all_puts = test_put;
 556     }
 557
 558   for (i = 0; i < num_gets; i++)
 559     {
 560       test_get = GNUNET_malloc(sizeof(struct TestGetContext));
 561       test_get->uid = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_puts);
 562       temp_daemon = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_peers);
 563       while (remember[test_get->uid][temp_daemon] == 1)
 564         temp_daemon = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_peers);
 565       test_get->daemon = GNUNET_TESTING_daemon_get(pg, temp_daemon);
 566       remember[test_get->uid][temp_daemon] = 1;
 567       test_get->next = all_gets;
 568       all_gets = test_get;
 569     }
 570
 571   GNUNET_SCHEDULER_add_now (sched, &do_put, all_puts);
 572 }
 573
 574
 575 /**
 576  * This function is called whenever a connection attempt is finished between two of
 577  * the started peers (started with GNUNET_TESTING_daemons_start).  The total
 578  * number of times this function is called should equal the number returned
 579  * from the GNUNET_TESTING_connect_topology call.
 580  *
 581  * The emsg variable is NULL on success (peers connected), and non-NULL on
 582  * failure (peers failed to connect).
 583  */
 584 void
 585 topology_callback (void *cls,
 586                    const struct GNUNET_PeerIdentity *first,
 587                    const struct GNUNET_PeerIdentity *second,
 588                    uint32_t distance,
 589                    const struct GNUNET_CONFIGURATION_Handle *first_cfg,
 590                    const struct GNUNET_CONFIGURATION_Handle *second_cfg,
 591                    struct GNUNET_TESTING_Daemon *first_daemon,
 592                    struct GNUNET_TESTING_Daemon *second_daemon,
 593                    const char *emsg)
 594 {
 595   if (emsg == NULL)
 596     {
 597       total_connections++;
 598 #if VERBOSE > 1
 599       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "connected peer %s to peer %s, distance %u\n",
 600                  first_daemon->shortname,
 601                  second_daemon->shortname,
 602                  distance);
 603 #endif
 604     }
 605 #if VERBOSE
 606   else
 607     {
 608       failed_connections++;
 609       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to connect peer %s to peer %s with error :\n%s\n",
 610                   first_daemon->shortname,
 611                   second_daemon->shortname, emsg);
 612     }
 613 #endif
 614
 615   if (total_connections == expected_connections)
 616     {
 617 #if VERBOSE
 618       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 619                   "Created %d total connections, which is our target number!  Starting next phase of testing.\n",
 620                   total_connections);
 621 #endif
 622       GNUNET_SCHEDULER_cancel (sched, die_task);
 623       die_task = GNUNET_SCHEDULER_add_delayed (sched, TIMEOUT,
 624                                                &end_badly, "from setup puts/gets");
 625
 626       GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 2), &setup_puts_and_gets, NULL);
 627     }
 628   else if (total_connections + failed_connections == expected_connections)
 629     {
 630       GNUNET_SCHEDULER_cancel (sched, die_task);
 631       die_task = GNUNET_SCHEDULER_add_now (sched,
 632                                            &end_badly, "from topology_callback (too many failed connections)");
 633     }
 634 }
 635
 636 static void
 637 peers_started_callback (void *cls,
 638        const struct GNUNET_PeerIdentity *id,
 639        const struct GNUNET_CONFIGURATION_Handle *cfg,
 640        struct GNUNET_TESTING_Daemon *d, const char *emsg)
 641 {
 642   if (emsg != NULL)
 643     {
 644       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to start daemon with error: `%s'\n",
 645                   emsg);
 646       return;
 647     }
 648   GNUNET_assert (id != NULL);
 649
 650 #if VERBOSE
 651   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Started daemon %llu out of %llu\n",
 652               (num_peers - peers_left) + 1, num_peers);
 653 #endif
 654
 655   peers_left--;
 656   if (peers_left == 0)
 657     {
 658
 659 #if VERBOSE
 660       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 661                   "All %d daemons started, now connecting peers!\n",
 662                   num_peers);
 663 #endif
 664       GNUNET_SCHEDULER_cancel (sched, die_task);
 665
 666       expected_connections = -1;
 667       if ((pg != NULL) && (peers_left == 0))
 668         {
 669           expected_connections = GNUNET_TESTING_connect_topology (pg, connection_topology, connect_topology_option, connect_topology_option_modifier);
 670 #if VERBOSE
 671           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 672                       "Have %d expected connections\n", expected_connections);
 673 #endif
 674         }
 675
 676       if (expected_connections == GNUNET_SYSERR)
 677         {
 678           die_task = GNUNET_SCHEDULER_add_now (sched,
 679                                                &end_badly, "from connect topology (bad return)");
 680         }
 681
 682       die_task = GNUNET_SCHEDULER_add_delayed (sched,
 683                                                TIMEOUT,
 684                                                &end_badly, "from connect topology (timeout)");
 685
 686       ok = 0;
 687     }
 688 }
 689
 690 static void
 691 create_topology ()
 692 {
 693   peers_left = num_peers; /* Reset counter */
 694   if (GNUNET_TESTING_create_topology (pg, topology, blacklist_topology, blacklist_transports) != GNUNET_SYSERR)
 695     {
 696 #if VERBOSE
 697       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 698                   "Topology set up, now starting peers!\n");
 699 #endif
 700       GNUNET_TESTING_daemons_continue_startup(pg);
 701     }
 702   else
 703     {
 704       GNUNET_SCHEDULER_cancel (sched, die_task);
 705       die_task = GNUNET_SCHEDULER_add_now (sched,
 706                                            &end_badly, "from create topology (bad return)");
 707     }
 708   GNUNET_SCHEDULER_cancel (sched, die_task);
 709   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 710                                            TIMEOUT,
 711                                            &end_badly, "from continue startup (timeout)");
 712 }
 713
 714 /**
 715  * Callback indicating that the hostkey was created for a peer.
 716  *
 717  * @param cls NULL
 718  * @param id the peer identity
 719  * @param d the daemon handle (pretty useless at this point, remove?)
 720  * @param emsg non-null on failure
 721  */
 722 void hostkey_callback (void *cls,
 723                        const struct GNUNET_PeerIdentity *id,
 724                        struct GNUNET_TESTING_Daemon *d,
 725                        const char *emsg)
 726 {
 727   if (emsg != NULL)
 728     {
 729       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Hostkey callback received error: %s\n", emsg);
 730     }
 731
 732 #if VERBOSE > 1
 733     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 734                 "Hostkey (%d/%d) created for peer `%s'\n",
 735                 num_peers - peers_left, num_peers, GNUNET_i2s(id));
 736 #endif
 737
 738
 739     peers_left--;
 740     if (peers_left == 0)
 741       {
 742 #if VERBOSE
 743         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 744                     "All %d hostkeys created, now creating topology!\n",
 745                     num_peers);
 746 #endif
 747         GNUNET_SCHEDULER_cancel (sched, die_task);
 748         /* Set up task in case topology creation doesn't finish
 749          * within a reasonable amount of time */
 750         die_task = GNUNET_SCHEDULER_add_delayed (sched,
 751                                                  TIMEOUT,
 752                                                  &end_badly, "from create_topology");
 753         GNUNET_SCHEDULER_add_now(sched, &create_topology, NULL);
 754         ok = 0;
 755       }
 756 }
 757
 758
 759 static void
 760 run (void *cls,
 761      struct GNUNET_SCHEDULER_Handle *s,
 762      char *const *args,
 763      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 764 {
 765   char * topology_str;
 766   char * connect_topology_str;
 767   char * blacklist_topology_str;
 768   char * connect_topology_option_str;
 769   char * connect_topology_option_modifier_string;
 770   sched = s;
 771
 772   /* Get path from configuration file */
 773   if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string(cfg, "paths", "servicehome", &test_directory))
 774     {
 775       ok = 404;
 776       return;
 777     }
 778
 779   if ((GNUNET_YES ==
 780       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "topology",
 781                                             &topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&topology, topology_str)))
 782     {
 783       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 784                   "Invalid topology `%s' given for section %s option %s\n", topology_str, "TESTING", "TOPOLOGY");
 785       topology = GNUNET_TESTING_TOPOLOGY_CLIQUE; /* Defaults to NONE, so set better default here */
 786     }
 787
 788   if ((GNUNET_YES ==
 789       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "connect_topology",
 790                                             &connect_topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&connection_topology, connect_topology_str)))
 791     {
 792       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 793                   "Invalid connect topology `%s' given for section %s option %s\n", connect_topology_str, "TESTING", "CONNECT_TOPOLOGY");
 794     }
 795   GNUNET_free_non_null(connect_topology_str);
 796   if ((GNUNET_YES ==
 797       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "connect_topology_option",
 798                                             &connect_topology_option_str)) && (GNUNET_NO == GNUNET_TESTING_topology_option_get(&connect_topology_option, connect_topology_option_str)))
 799     {
 800       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 801                   "Invalid connect topology option `%s' given for section %s option %s\n", connect_topology_option_str, "TESTING", "CONNECT_TOPOLOGY_OPTION");
 802       connect_topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_ALL; /* Defaults to NONE, set to ALL */
 803     }
 804   GNUNET_free_non_null(connect_topology_option_str);
 805   if (GNUNET_YES ==
 806         GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "connect_topology_option_modifier",
 807                                                &connect_topology_option_modifier_string))
 808     {
 809       if (sscanf(connect_topology_option_modifier_string, "%lf", &connect_topology_option_modifier) != 1)
 810       {
 811         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 812         _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
 813         connect_topology_option_modifier_string,
 814         "connect_topology_option_modifier",
 815         "TESTING");
 816       }
 817       GNUNET_free (connect_topology_option_modifier_string);
 818     }
 819
 820   if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "blacklist_transports",
 821                                          &blacklist_transports))
 822     blacklist_transports = NULL;
 823
 824   if ((GNUNET_YES ==
 825       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "blacklist_topology",
 826                                             &blacklist_topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&blacklist_topology, blacklist_topology_str)))
 827     {
 828       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 829                   "Invalid topology `%s' given for section %s option %s\n", topology_str, "TESTING", "BLACKLIST_TOPOLOGY");
 830     }
 831   GNUNET_free_non_null(topology_str);
 832   GNUNET_free_non_null(blacklist_topology_str);
 833
 834   /* Get number of peers to start from configuration */
 835   if (GNUNET_SYSERR ==
 836       GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
 837                                              &num_peers))
 838     num_peers = DEFAULT_NUM_PEERS;
 839
 840   if (GNUNET_SYSERR ==
 841       GNUNET_CONFIGURATION_get_value_number (cfg, "dht_testing", "num_puts",
 842                                              &num_puts))
 843     num_puts = DEFAULT_NUM_PEERS;
 844
 845   if (GNUNET_SYSERR ==
 846       GNUNET_CONFIGURATION_get_value_number (cfg, "dht_testing", "num_gets",
 847                                              &num_gets))
 848     num_gets = DEFAULT_NUM_PEERS;
 849
 850   /* Set peers_left so we know when all peers started */
 851   peers_left = num_peers;
 852
 853   /* Set up a task to end testing if peer start fails */
 854   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 855                                            GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, SECONDS_PER_PEER_START * num_peers),
 856                                            &end_badly, "didn't generate all hostkeys within a reasonable amount of time!!!");
 857
 858   pg = GNUNET_TESTING_daemons_start (sched, cfg,
 859                                      peers_left, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, SECONDS_PER_PEER_START * num_peers), &hostkey_callback, NULL, &peers_started_callback, NULL,
 860                                      &topology_callback, NULL, NULL);
 861
 862 }
 863
 864 static int
 865 check ()
 866 {
 867   int ret;
 868   /* Arguments for GNUNET_PROGRAM_run */
 869   char *const argv[] = {"test-dht-multipeer", /* Name to give running binary */
 870     "-c",
 871     "test_dht_multipeer_data.conf", /* Config file to use */
 872 #if VERBOSE
 873     "-L", "DEBUG",
 874 #endif
 875     NULL
 876   };
 877   struct GNUNET_GETOPT_CommandLineOption options[] = {
 878     GNUNET_GETOPT_OPTION_END
 879   };
 880   /* Run the run function as a new program */
 881   ret = GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 882                       argv, "test-dht-multipeer", "nohelp",
 883                       options, &run, &ok);
 884   if (ret != GNUNET_OK)
 885     {
 886       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "`test-dht-multipeer': Failed with error code %d\n", ret);
 887     }
 888   return ok;
 889 }
 890
 891 int
 892 main (int argc, char *argv[])
 893 {
 894   int ret;
 895
 896   GNUNET_log_setup ("test-dht-multipeer",
 897 #if VERBOSE
 898                     "DEBUG",
 899 #else
 900                     "WARNING",
 901 #endif
 902                     NULL);
 903   ret = check ();
 904   /**
 905    * Need to remove base directory, subdirectories taken care
 906    * of by the testing framework.
 907    */
 908   if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
 909     {
 910       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to remove testing directory %s\n", test_directory);
 911     }
 912   return ret;
 913 }
 914
 915 /* end of test_dht_twopeer_put_get.c */