src/fs/fs_test_lib.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2010 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 2, 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 /**
  22  * @file fs/fs_test_lib.c
  23  * @brief library routines for testing FS publishing and downloading
  24  *        with multiple peers; this code is limited to flat files
  25  *        and no keywords (those functions can be tested with
  26  *        single-peer setups; this is for testing routing).
  27  * @author Christian Grothoff
  28  */
  29 #include "platform.h"
  30 #include "fs_test_lib.h"
  31 #include "gnunet_testing_lib.h"
  32
  33 #define CONNECT_ATTEMPTS 4
  34
  35 /**
  36  * Handle for a daemon started for testing FS.
  37  */
  38 struct GNUNET_FS_TestDaemon
  39 {
  40
  41   /**
  42    * Handle to the file sharing context using this daemon.
  43    */
  44   struct GNUNET_FS_Handle *fs;
  45
  46   /**
  47    * Handle to the daemon via testing.
  48    */
  49   struct GNUNET_TESTING_Daemon *daemon;
  50
  51   /**
  52    * Note that 'group' will be the same value for all of the
  53    * daemons started jointly.
  54    */
  55   struct GNUNET_TESTING_PeerGroup *group;
  56
  57   /**
  58    * Configuration for accessing this peer.
  59    */
  60   struct GNUNET_CONFIGURATION_Handle *cfg;
  61
  62   /**
  63    * ID of this peer.
  64    */
  65   struct GNUNET_PeerIdentity id;
  66
  67   /**
  68    * Scheduler to use (for publish_cont).
  69    */
  70   struct GNUNET_SCHEDULER_Handle *publish_sched;
  71
  72   /**
  73    * Function to call when upload is done.
  74    */
  75   GNUNET_FS_TEST_UriContinuation publish_cont;
  76
  77   /**
  78    * Closure for publish_cont.
  79    */
  80   void *publish_cont_cls;
  81
  82   /**
  83    * Task to abort publishing (timeout).
  84    */
  85   GNUNET_SCHEDULER_TaskIdentifier publish_timeout_task;
  86
  87   /**
  88    * Seed for file generation.
  89    */
  90   uint32_t publish_seed;
  91
  92   /**
  93    * Context for current publishing operation.
  94    */
  95   struct GNUNET_FS_PublishContext *publish_context;
  96
  97   /**
  98    * Result URI.
  99    */
 100   struct GNUNET_FS_Uri *publish_uri;
 101
 102   /**
 103    * Scheduler to use (for download_cont).
 104    */
 105   struct GNUNET_SCHEDULER_Handle *download_sched;
 106
 107   /**
 108    * Function to call when download is done.
 109    */
 110   GNUNET_SCHEDULER_Task download_cont;
 111
 112   /**
 113    * Closure for download_cont.
 114    */
 115   void *download_cont_cls;
 116
 117   /**
 118    * Seed for download verification.
 119    */
 120   uint32_t download_seed;
 121
 122   /**
 123    * Task to abort downloading (timeout).
 124    */
 125   GNUNET_SCHEDULER_TaskIdentifier download_timeout_task;
 126
 127   /**
 128    * Context for current download operation.
 129    */
 130   struct GNUNET_FS_DownloadContext *download_context;
 131
 132   /**
 133    * Verbosity level of the current operation.
 134    */
 135   int verbose;
 136
 137
 138 };
 139
 140 /**
 141  * Check whether peers successfully shut down.
 142  */
 143 void shutdown_callback (void *cls,
 144                         const char *emsg)
 145 {
 146   if (emsg != NULL)
 147     {
 148 #if VERBOSE
 149       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 150                   "Shutdown of peers failed!\n");
 151 #endif
 152     }
 153   else
 154     {
 155 #if VERBOSE
 156       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 157                   "All peers successfully shut down!\n");
 158 #endif
 159     }
 160 }
 161
 162 static void
 163 report_uri (void *cls,
 164             const struct GNUNET_SCHEDULER_TaskContext *tc)
 165 {
 166   struct GNUNET_FS_TestDaemon *daemon = cls;
 167   GNUNET_FS_TEST_UriContinuation cont;
 168   struct GNUNET_FS_Uri *uri;
 169
 170   GNUNET_FS_publish_stop (daemon->publish_context);
 171   daemon->publish_context = NULL;
 172   daemon->publish_sched = NULL;
 173   cont = daemon->publish_cont;
 174   daemon->publish_cont = NULL;
 175   uri = daemon->publish_uri;
 176   cont (daemon->publish_cont_cls,
 177         uri);
 178   GNUNET_FS_uri_destroy (uri);
 179 }
 180
 181
 182 static void
 183 report_success (void *cls,
 184                 const struct GNUNET_SCHEDULER_TaskContext *tc)
 185 {
 186   struct GNUNET_FS_TestDaemon *daemon = cls;
 187
 188   GNUNET_FS_download_stop (daemon->download_context, GNUNET_YES);
 189   daemon->download_context = NULL;
 190   GNUNET_SCHEDULER_add_continuation (daemon->download_sched,
 191                                      daemon->download_cont,
 192                                      daemon->download_cont_cls,
 193                                      GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 194   daemon->download_cont = NULL;
 195   daemon->download_sched = NULL;
 196 }
 197
 198 static void*
 199 progress_cb (void *cls,
 200              const struct GNUNET_FS_ProgressInfo *info)
 201 {
 202   struct GNUNET_FS_TestDaemon *daemon = cls;
 203
 204   switch (info->status)
 205     {
 206     case GNUNET_FS_STATUS_PUBLISH_COMPLETED:
 207       GNUNET_SCHEDULER_cancel (daemon->publish_sched,
 208                                daemon->publish_timeout_task);
 209       daemon->publish_timeout_task = GNUNET_SCHEDULER_NO_TASK;
 210       daemon->publish_uri = GNUNET_FS_uri_dup (info->value.publish.specifics.completed.chk_uri);
 211       GNUNET_SCHEDULER_add_continuation (daemon->publish_sched,
 212                                          &report_uri,
 213                                          daemon,
 214                                          GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 215       break;
 216     case GNUNET_FS_STATUS_PUBLISH_PROGRESS:
 217       if (daemon->verbose)
 218         GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 219                     "Publishing at %llu/%llu bytes\n",
 220                     (unsigned long long) info->value.publish.completed,
 221                     (unsigned long long) info->value.publish.size);
 222       break;
 223     case GNUNET_FS_STATUS_DOWNLOAD_PROGRESS:
 224       if (daemon->verbose)
 225         GNUNET_log (GNUNET_ERROR_TYPE_INFO,
 226                     "Download at %llu/%llu bytes\n",
 227                     (unsigned long long) info->value.download.completed,
 228                     (unsigned long long) info->value.download.size);
 229       break;
 230     case GNUNET_FS_STATUS_DOWNLOAD_COMPLETED:
 231       GNUNET_SCHEDULER_cancel (daemon->download_sched,
 232                                daemon->download_timeout_task);
 233       daemon->download_timeout_task = GNUNET_SCHEDULER_NO_TASK;
 234       GNUNET_SCHEDULER_add_continuation (daemon->download_sched,
 235                                          &report_success,
 236                                          daemon,
 237                                          GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 238       break;
 239     case GNUNET_FS_STATUS_DOWNLOAD_ACTIVE:
 240     case GNUNET_FS_STATUS_DOWNLOAD_INACTIVE:
 241       break;
 242       /* FIXME: monitor data correctness during download progress */
 243       /* FIXME: do performance reports given sufficient verbosity */
 244       /* FIXME: advance timeout task to "immediate" on error */
 245     default:
 246       break;
 247     }
 248   return NULL;
 249 }
 250
 251
 252 struct StartContext
 253 {
 254   struct GNUNET_SCHEDULER_Handle *sched;
 255   struct GNUNET_TIME_Relative timeout;
 256   unsigned int total;
 257   unsigned int have;
 258   struct GNUNET_FS_TestDaemon **daemons;
 259   GNUNET_SCHEDULER_Task cont;
 260   void *cont_cls;
 261   struct GNUNET_TESTING_PeerGroup *group;
 262   struct GNUNET_CONFIGURATION_Handle *cfg;
 263   GNUNET_SCHEDULER_TaskIdentifier timeout_task;
 264 };
 265
 266
 267 static void
 268 notify_running (void *cls,
 269                 const struct GNUNET_PeerIdentity *id,
 270                 const struct GNUNET_CONFIGURATION_Handle *cfg,
 271                 struct GNUNET_TESTING_Daemon *d,
 272                 const char *emsg)
 273 {
 274   struct StartContext *sctx = cls;
 275   unsigned int i;
 276
 277   if (emsg != NULL)
 278     {
 279       GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
 280                   _("Failed to start daemon: %s\n"),
 281                   emsg);
 282       return;
 283     }
 284   i = 0;
 285   while (i < sctx->total)
 286     {
 287       if (GNUNET_TESTING_daemon_get (sctx->group,
 288                                      i) == d)
 289         break;
 290       i++;
 291     }
 292   GNUNET_assert (i < sctx->total);
 293   GNUNET_assert (sctx->have < sctx->total);
 294   GNUNET_assert (sctx->daemons[i]->cfg == NULL);
 295   sctx->daemons[i]->cfg = GNUNET_CONFIGURATION_dup (cfg);
 296   sctx->daemons[i]->group = sctx->group;
 297   sctx->daemons[i]->daemon = d;
 298   sctx->daemons[i]->id = *id;
 299   sctx->have++;
 300   if (sctx->have == sctx->total)
 301     {
 302       GNUNET_SCHEDULER_add_continuation (sctx->sched,
 303                                          sctx->cont,
 304                                          sctx->cont_cls,
 305                                          GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 306       GNUNET_CONFIGURATION_destroy (sctx->cfg);
 307       GNUNET_SCHEDULER_cancel (sctx->sched,
 308                                sctx->timeout_task);
 309       for (i=0;i<sctx->total;i++)
 310         {
 311           sctx->daemons[i]->fs = GNUNET_FS_start (sctx->sched,
 312                                                   sctx->daemons[i]->cfg,
 313                                                   "<tester>",
 314                                                   &progress_cb,
 315                                                   sctx->daemons[i],
 316                                                   GNUNET_FS_FLAGS_NONE,
 317                                                   GNUNET_FS_OPTIONS_END);
 318         }
 319       GNUNET_free (sctx);
 320     }
 321 }
 322
 323
 324 static void
 325 start_timeout (void *cls,
 326                const struct GNUNET_SCHEDULER_TaskContext *tc)
 327 {
 328   struct StartContext *sctx = cls;
 329   unsigned int i;
 330
 331   GNUNET_TESTING_daemons_stop (sctx->group, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30), &shutdown_callback, NULL);
 332   for (i=0;i<sctx->total;i++)
 333     {
 334       if (i < sctx->have)
 335         GNUNET_CONFIGURATION_destroy (sctx->daemons[i]->cfg);
 336       GNUNET_free (sctx->daemons[i]);
 337     }
 338   GNUNET_CONFIGURATION_destroy (sctx->cfg);
 339   GNUNET_SCHEDULER_add_continuation (sctx->sched,
 340                                      sctx->cont,
 341                                      sctx->cont_cls,
 342                                      GNUNET_SCHEDULER_REASON_TIMEOUT);
 343   GNUNET_free (sctx);
 344 }
 345
 346
 347 /**
 348  * Start daemons for testing.
 349  *
 350  * @param sched scheduler to use
 351  * @param template_cfg_file configuration template to use
 352  * @param timeout if this operation cannot be completed within the
 353  *                given period, call the continuation with an error code
 354  * @param total number of daemons to start
 355  * @param daemons array of 'total' entries to be initialized
 356  *                (array must already be allocated, will be filled)
 357  * @param cont function to call when done
 358  * @param cont_cls closure for cont
 359  */
 360 void
 361 GNUNET_FS_TEST_daemons_start (struct GNUNET_SCHEDULER_Handle *sched,
 362                               const char *template_cfg_file,
 363                               struct GNUNET_TIME_Relative timeout,
 364                               unsigned int total,
 365                               struct GNUNET_FS_TestDaemon **daemons,
 366                               GNUNET_SCHEDULER_Task cont,
 367                               void *cont_cls)
 368 {
 369   struct StartContext *sctx;
 370   unsigned int i;
 371
 372   GNUNET_assert (total > 0);
 373   sctx = GNUNET_malloc (sizeof (struct StartContext));
 374   sctx->sched = sched;
 375   sctx->daemons = daemons;
 376   sctx->total = total;
 377   sctx->cont = cont;
 378   sctx->cont_cls = cont_cls;
 379   sctx->cfg = GNUNET_CONFIGURATION_create ();
 380   if (GNUNET_OK !=
 381       GNUNET_CONFIGURATION_load (sctx->cfg,
 382                                  template_cfg_file))
 383     {
 384       GNUNET_break (0);
 385       GNUNET_CONFIGURATION_destroy (sctx->cfg);
 386       GNUNET_free (sctx);
 387       GNUNET_SCHEDULER_add_continuation (sched,
 388                                          cont,
 389                                          cont_cls,
 390                                          GNUNET_SCHEDULER_REASON_TIMEOUT);
 391       return;
 392     }
 393   for (i=0;i<total;i++)
 394     daemons[i] = GNUNET_malloc (sizeof (struct GNUNET_FS_TestDaemon));
 395   sctx->group = GNUNET_TESTING_daemons_start (sched,
 396                                               sctx->cfg,
 397                                               total,
 398                                               timeout,
 399                                               NULL,
 400                                               NULL,
 401                                               &notify_running,
 402                                               sctx,
 403                                               NULL, NULL,
 404                                               NULL);
 405   sctx->timeout_task = GNUNET_SCHEDULER_add_delayed (sched,
 406                                                      timeout,
 407                                                      &start_timeout,
 408                                                      sctx);
 409 }
 410
 411
 412 struct ConnectContext
 413 {
 414   struct GNUNET_SCHEDULER_Handle *sched;
 415   GNUNET_SCHEDULER_Task cont;
 416   void *cont_cls;
 417 };
 418
 419 /**
 420  * Prototype of a function that will be called whenever
 421  * two daemons are connected by the testing library.
 422  *
 423  * @param cls closure
 424  * @param first peer id for first daemon
 425  * @param second peer id for the second daemon
 426  * @param distance distance between the connected peers
 427  * @param first_cfg config for the first daemon
 428  * @param second_cfg config for the second daemon
 429  * @param first_daemon handle for the first daemon
 430  * @param second_daemon handle for the second daemon
 431  * @param emsg error message (NULL on success)
 432  */
 433 static void
 434 notify_connection (void *cls,
 435                    const struct GNUNET_PeerIdentity *first,
 436                    const struct GNUNET_PeerIdentity *second,
 437                    uint32_t distance,
 438                    const struct GNUNET_CONFIGURATION_Handle *first_cfg,
 439                    const struct GNUNET_CONFIGURATION_Handle *second_cfg,
 440                    struct GNUNET_TESTING_Daemon *first_daemon,
 441                    struct GNUNET_TESTING_Daemon *second_daemon,
 442                    const char *emsg)
 443 {
 444   struct ConnectContext *cc = cls;
 445
 446   if (emsg != NULL)
 447     GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 448                 _("Failed to connect peers: %s\n"),
 449                 emsg);
 450   GNUNET_SCHEDULER_add_continuation (cc->sched,
 451                                      cc->cont,
 452                                      cc->cont_cls,
 453                                      (emsg != NULL)
 454                                      ? GNUNET_SCHEDULER_REASON_TIMEOUT
 455                                      : GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 456   GNUNET_free (cc);
 457 }
 458
 459
 460 /**
 461  * Connect two daemons for testing.
 462  *
 463  * @param sched scheduler to use
 464  * @param daemon1 first daemon to connect
 465  * @param daemon2 second first daemon to connect
 466  * @param timeout if this operation cannot be completed within the
 467  *                given period, call the continuation with an error code
 468  * @param cont function to call when done
 469  * @param cont_cls closure for cont
 470  */
 471 void
 472 GNUNET_FS_TEST_daemons_connect (struct GNUNET_SCHEDULER_Handle *sched,
 473                                 struct GNUNET_FS_TestDaemon *daemon1,
 474                                 struct GNUNET_FS_TestDaemon *daemon2,
 475                                 struct GNUNET_TIME_Relative timeout,
 476                                 GNUNET_SCHEDULER_Task cont,
 477                                 void *cont_cls)
 478 {
 479   struct ConnectContext *ncc;
 480
 481   ncc = GNUNET_malloc (sizeof (struct ConnectContext));
 482   ncc->sched = sched;
 483   ncc->cont = cont;
 484   ncc->cont_cls = cont_cls;
 485   GNUNET_TESTING_daemons_connect (daemon1->daemon,
 486                                   daemon2->daemon,
 487                                   timeout,
 488                                   CONNECT_ATTEMPTS,
 489                                   &notify_connection,
 490                                   ncc);
 491 }
 492
 493
 494 /**
 495  * Obtain peer group used for testing.
 496  *
 497  * @param daemons array with the daemons (must contain at least one)
 498  * @return peer group
 499  */
 500 struct GNUNET_TESTING_PeerGroup *
 501 GNUNET_FS_TEST_get_group (struct GNUNET_FS_TestDaemon **daemons)
 502 {
 503   return daemons[0]->group;
 504 }
 505
 506
 507 /**
 508  * Stop daemons used for testing.
 509  *
 510  * @param sched scheduler to use
 511  * @param total number of daemons to stop
 512  * @param daemons array with the daemons (values will be clobbered)
 513  */
 514 void
 515 GNUNET_FS_TEST_daemons_stop (struct GNUNET_SCHEDULER_Handle *sched,
 516                              unsigned int total,
 517                              struct GNUNET_FS_TestDaemon **daemons)
 518 {
 519   unsigned int i;
 520   struct GNUNET_TESTING_PeerGroup *pg;
 521
 522   GNUNET_assert (total > 0);
 523   pg = daemons[0]->group;
 524   for (i=0;i<total;i++)
 525     {
 526       GNUNET_FS_stop (daemons[i]->fs);
 527       GNUNET_CONFIGURATION_destroy (daemons[i]->cfg);
 528       GNUNET_free (daemons[i]);
 529       daemons[i] = NULL;
 530     }
 531   GNUNET_TESTING_daemons_stop (pg, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30), &shutdown_callback, NULL);
 532 }
 533
 534
 535 static void
 536 publish_timeout (void *cls,
 537                  const struct GNUNET_SCHEDULER_TaskContext *tc)
 538 {
 539   struct GNUNET_FS_TestDaemon *daemon = cls;
 540   GNUNET_FS_TEST_UriContinuation cont;
 541
 542   cont = daemon->publish_cont;
 543   daemon->publish_timeout_task = GNUNET_SCHEDULER_NO_TASK;
 544   daemon->publish_cont = NULL;
 545   GNUNET_FS_publish_stop (daemon->publish_context);
 546   daemon->publish_context = NULL;
 547   cont (daemon->publish_cont_cls,
 548         NULL);
 549 }
 550
 551
 552 static size_t
 553 file_generator (void *cls,
 554                 uint64_t offset,
 555                 size_t max,
 556                 void *buf,
 557                 char **emsg)
 558 {
 559   struct GNUNET_FS_TestDaemon *daemon = cls;
 560   uint64_t pos;
 561   uint8_t *cbuf = buf;
 562   int mod;
 563
 564   for (pos=0;pos<max;pos++)
 565     {
 566       mod = (255 - (offset / 1024 / 32));
 567       if (mod == 0)
 568         mod = 1;
 569       cbuf[pos] = (uint8_t) ((offset * daemon->publish_seed) % mod);
 570     }
 571   return max;
 572 }
 573
 574
 575
 576 /**
 577  * Publish a file at the given daemon.
 578  *
 579  * @param sched scheduler to use
 580  * @param daemon where to publish
 581  * @param timeout if this operation cannot be completed within the
 582  *                given period, call the continuation with an error code
 583  * @param anonymity option for publication
 584  * @param do_index GNUNET_YES for index, GNUNET_NO for insertion,
 585  *                GNUNET_SYSERR for simulation
 586  * @param size size of the file to publish
 587  * @param seed seed to use for file generation
 588  * @param verbose how verbose to be in reporting
 589  * @param cont function to call when done
 590  * @param cont_cls closure for cont
 591  */
 592 void
 593 GNUNET_FS_TEST_publish (struct GNUNET_SCHEDULER_Handle *sched,
 594                         struct GNUNET_FS_TestDaemon *daemon,
 595                         struct GNUNET_TIME_Relative timeout,
 596                         uint32_t anonymity,
 597                         int do_index,
 598                         uint64_t size,
 599                         uint32_t seed,
 600                         unsigned int verbose,
 601                         GNUNET_FS_TEST_UriContinuation cont,
 602                         void *cont_cls)
 603 {
 604   GNUNET_assert (daemon->publish_cont == NULL);
 605   struct GNUNET_FS_FileInformation *fi;
 606
 607   daemon->publish_cont = cont;
 608   daemon->publish_cont_cls = cont_cls;
 609   daemon->publish_seed = seed;
 610   daemon->verbose = verbose;
 611   daemon->publish_sched = sched;
 612   fi = GNUNET_FS_file_information_create_from_reader (daemon->fs,
 613                                                       daemon,
 614                                                       size,
 615                                                       &file_generator,
 616                                                       daemon,
 617                                                       NULL,
 618                                                       NULL,
 619                                                       do_index,
 620                                                       anonymity,
 621                                                       42 /* priority */,
 622                                                       GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS));
 623   daemon->publish_context = GNUNET_FS_publish_start (daemon->fs,
 624                                                      fi,
 625                                                      NULL, NULL, NULL,
 626                                                      GNUNET_FS_PUBLISH_OPTION_NONE);
 627   daemon->publish_timeout_task = GNUNET_SCHEDULER_add_delayed (sched,
 628                                                                timeout,
 629                                                                &publish_timeout,
 630                                                                daemon);
 631 }
 632
 633
 634 static void
 635 download_timeout (void *cls,
 636                   const struct GNUNET_SCHEDULER_TaskContext *tc)
 637 {
 638   struct GNUNET_FS_TestDaemon *daemon = cls;
 639
 640   daemon->download_timeout_task = GNUNET_SCHEDULER_NO_TASK;
 641   GNUNET_FS_download_stop (daemon->download_context, GNUNET_YES);
 642   daemon->download_context = NULL;
 643   GNUNET_SCHEDULER_add_continuation (daemon->download_sched,
 644                                      daemon->download_cont,
 645                                      daemon->download_cont_cls,
 646                                      GNUNET_SCHEDULER_REASON_TIMEOUT);
 647   daemon->download_cont = NULL;
 648   daemon->download_sched = NULL;
 649 }
 650
 651
 652 /**
 653  * Perform test download.
 654  *
 655  * @param sched scheduler to use
 656  * @param daemon which peer to download from
 657  * @param timeout if this operation cannot be completed within the
 658  *                given period, call the continuation with an error code
 659  * @param anonymity option for download
 660  * @param seed used for file validation
 661  * @param uri URI of file to download (CHK/LOC only)
 662  * @param verbose how verbose to be in reporting
 663  * @param cont function to call when done
 664  * @param cont_cls closure for cont
 665  */
 666 void
 667 GNUNET_FS_TEST_download (struct GNUNET_SCHEDULER_Handle *sched,
 668                          struct GNUNET_FS_TestDaemon *daemon,
 669                          struct GNUNET_TIME_Relative timeout,
 670                          uint32_t anonymity,
 671                          uint32_t seed,
 672                          const struct GNUNET_FS_Uri *uri,
 673                          unsigned int verbose,
 674                          GNUNET_SCHEDULER_Task cont,
 675                          void *cont_cls)
 676 {
 677   uint64_t size;
 678
 679   GNUNET_assert (daemon->download_cont == NULL);
 680   size = GNUNET_FS_uri_chk_get_file_size (uri);
 681   daemon->verbose = verbose;
 682   daemon->download_sched = sched;
 683   daemon->download_cont = cont;
 684   daemon->download_cont_cls = cont_cls;
 685   daemon->download_seed = seed;
 686   daemon->download_context = GNUNET_FS_download_start (daemon->fs,
 687                                                        uri,
 688                                                        NULL, NULL,
 689                                                        NULL,
 690                                                        0,
 691                                                        size,
 692                                                        anonymity,
 693                                                        GNUNET_FS_DOWNLOAD_OPTION_NONE,
 694                                                        NULL,
 695                                                        NULL);
 696   daemon->download_timeout_task = GNUNET_SCHEDULER_add_delayed (sched,
 697                                                                 timeout,
 698                                                                 &download_timeout,
 699                                                                 daemon);
 700 }
 701
 702 /* end of test_fs_lib.c */