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Diffstat (limited to 'src/dht/test_dht_twopeer.c')
| -rw-r--r-- | src/dht/test_dht_twopeer.c | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/src/dht/test_dht_twopeer.c b/src/dht/test_dht_twopeer.c new file mode 100644 index 0000000..a3b6e4a --- /dev/null +++ b/src/dht/test_dht_twopeer.c @@ -0,0 +1,513 @@ +/* + This file is part of GNUnet. + (C) 2009 Christian Grothoff (and other contributing authors) + + GNUnet is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published + by the Free Software Foundation; either version 3, or (at your + option) any later version. + + GNUnet is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU General Public License + along with GNUnet; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ +/** + * @file dht/test_dht_twopeer.c + * @brief base testcase for testing DHT service with + * two running peers + */ +#include "platform.h" +#include "gnunet_testing_lib.h" +#include "gnunet_core_service.h" +#include "gnunet_dht_service.h" + +/* DEFINES */ +#define VERBOSE GNUNET_NO + +#define MAX_GET_ATTEMPTS 10 + +#define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5) + +#define DEFAULT_NUM_PEERS 2 + +/* Structs */ + +struct PeerGetContext +{ + struct GNUNET_PeerIdentity *peer; + + struct GNUNET_DHT_Handle *dht_handle; + + struct GNUNET_DHT_GetHandle *get_handle; + + unsigned int get_attempts; + + GNUNET_SCHEDULER_TaskIdentifier retry_task; +}; + +/* Globals */ +static char *test_directory; + +static struct PeerGetContext curr_get_ctx; + +static unsigned int expected_connections; + +static unsigned long long peers_left; + +static struct GNUNET_TESTING_PeerGroup *pg; + +static unsigned long long num_peers; + +static unsigned int total_gets; + +static unsigned int gets_succeeded; + +static unsigned int total_connections; + +static unsigned int failed_connections; + +static GNUNET_SCHEDULER_TaskIdentifier die_task; + +static int ok; + +static struct GNUNET_PeerIdentity peer1id; + +static struct GNUNET_PeerIdentity peer2id; + +static struct GNUNET_DHT_Handle *peer1dht; + +static struct GNUNET_DHT_Handle *peer2dht; + +/** + * Check whether peers successfully shut down. + */ +static void +shutdown_callback (void *cls, const char *emsg) +{ + if (emsg != NULL) + { + if (ok == 0) + ok = 2; + } +} + +static void +finish_testing (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + GNUNET_assert (pg != NULL); + GNUNET_assert (peer1dht != NULL); + GNUNET_assert (peer2dht != NULL); + GNUNET_DHT_disconnect (peer1dht); + GNUNET_DHT_disconnect (peer2dht); + GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL); + pg = NULL; + ok = 0; +} + +static void +end_badly_cont (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + if (peer1dht != NULL) + GNUNET_DHT_disconnect (peer1dht); + + if (peer2dht != NULL) + GNUNET_DHT_disconnect (peer2dht); + + if (pg != NULL) + { + GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL); + pg = NULL; + } + + if (curr_get_ctx.retry_task != GNUNET_SCHEDULER_NO_TASK) + { + GNUNET_SCHEDULER_cancel (curr_get_ctx.retry_task); + curr_get_ctx.retry_task = GNUNET_SCHEDULER_NO_TASK; + } +} + + +static void +end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + const char *emsg = cls; + + FPRINTF (stderr, "Error: %s\n", emsg); + if (curr_get_ctx.retry_task != GNUNET_SCHEDULER_NO_TASK) + { + GNUNET_SCHEDULER_cancel (curr_get_ctx.retry_task); + curr_get_ctx.retry_task = GNUNET_SCHEDULER_NO_TASK; + } + if (curr_get_ctx.get_handle != NULL) + { + GNUNET_DHT_get_stop (curr_get_ctx.get_handle); + } + + GNUNET_SCHEDULER_add_now (&end_badly_cont, NULL); + ok = 1; +} + + +/* Forward declaration */ +static void +do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc); + +/** + * Iterator called on each result obtained for a DHT + * operation that expects a reply + * + * @param cls closure + * @param exp when will this value expire + * @param key key of the result + * @param type type of the result + * @param size number of bytes in data + * @param data pointer to the result data + */ +static void +get_result_iterator (void *cls, struct GNUNET_TIME_Absolute exp, + const GNUNET_HashCode * key, + const struct GNUNET_PeerIdentity *get_path, + unsigned int get_path_length, + const struct GNUNET_PeerIdentity *put_path, + unsigned int put_path_length, enum GNUNET_BLOCK_Type type, + size_t size, const void *data) +{ + struct PeerGetContext *get_context = cls; + + if (0 != + memcmp (&get_context->peer->hashPubKey, key, sizeof (GNUNET_HashCode))) + { + FPRINTF (stderr, "%s", "??\n"); + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Key returned is not the same key as was searched for!\n"); + GNUNET_SCHEDULER_cancel (die_task); + die_task = + GNUNET_SCHEDULER_add_now (&end_badly, + "key mismatch in get response!\n"); + return; + } + if (get_context->retry_task != GNUNET_SCHEDULER_NO_TASK) + { + GNUNET_SCHEDULER_cancel (get_context->retry_task); + get_context->retry_task = GNUNET_SCHEDULER_NO_TASK; + } + + if (get_context->peer == &peer2id) + { + get_context->peer = &peer1id; + get_context->dht_handle = peer2dht; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Received first correct GET request response!\n"); + GNUNET_DHT_get_stop (get_context->get_handle); + GNUNET_SCHEDULER_add_now (&do_get, get_context); + } + else + { + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Received second correct GET request response!\n"); + GNUNET_SCHEDULER_cancel (die_task); + GNUNET_DHT_get_stop (get_context->get_handle); + die_task = GNUNET_SCHEDULER_add_now (&finish_testing, NULL); + } + +} + +static void +stop_retry_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc); + + +static void +get_stop_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerGetContext *get_context = cls; + + if (get_context->get_attempts >= MAX_GET_ATTEMPTS) + { + FPRINTF (stderr, "%s", "?\n"); + GNUNET_log (GNUNET_ERROR_TYPE_ERROR, + "Too many attempts failed, ending test!\n", + get_context->get_attempts); + GNUNET_SCHEDULER_cancel (die_task); + die_task = + GNUNET_SCHEDULER_add_now (&end_badly, + "GET attempt failed, ending test!\n"); + return; + } + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Get attempt %u failed, retrying request!\n", + get_context->get_attempts); + FPRINTF (stderr, "%s", "."); + get_context->get_attempts++; + get_context->retry_task = + GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 60), + &stop_retry_get, get_context); + get_context->get_handle = + GNUNET_DHT_get_start (get_context->dht_handle, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 5), + GNUNET_BLOCK_TYPE_DHT_HELLO, + &get_context->peer->hashPubKey, 1, + GNUNET_DHT_RO_NONE, NULL, 0, &get_result_iterator, + get_context); +} + + +static void +stop_retry_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerGetContext *get_context = cls; + + get_context->retry_task = GNUNET_SCHEDULER_NO_TASK; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Get attempt %u failed, canceling request!\n", + get_context->get_attempts); + GNUNET_DHT_get_stop (get_context->get_handle); + get_context->get_handle = NULL; + GNUNET_SCHEDULER_add_now (&get_stop_finished, get_context); +} + + +static void +do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + struct PeerGetContext *get_context = cls; + + get_context->retry_task = + GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 10), + &stop_retry_get, get_context); + get_context->get_handle = + GNUNET_DHT_get_start (get_context->dht_handle, + GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 5), + GNUNET_BLOCK_TYPE_DHT_HELLO, + &get_context->peer->hashPubKey, 1, + GNUNET_DHT_RO_FIND_PEER, NULL, 0, + &get_result_iterator, get_context); +} + + +static void +topology_callback (void *cls, const struct GNUNET_PeerIdentity *first, + const struct GNUNET_PeerIdentity *second, uint32_t distance, + const struct GNUNET_CONFIGURATION_Handle *first_cfg, + const struct GNUNET_CONFIGURATION_Handle *second_cfg, + struct GNUNET_TESTING_Daemon *first_daemon, + struct GNUNET_TESTING_Daemon *second_daemon, + const char *emsg) +{ + if (emsg == NULL) + { + total_connections++; +#if VERBOSE + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "connected peer %s to peer %s, distance %u\n", + first_daemon->shortname, second_daemon->shortname, distance); + } + else + { + failed_connections++; + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Failed to connect peer %s to peer %s with error :\n%s\n", + first_daemon->shortname, second_daemon->shortname, emsg); +#endif + } + + if (total_connections == expected_connections) + { +#if VERBOSE + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "Created %d total connections, which is our target number! Starting next phase of testing.\n", + total_connections); +#endif + GNUNET_SCHEDULER_cancel (die_task); + die_task = + GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, + "Timeout trying to GET"); + + curr_get_ctx.dht_handle = peer1dht; + curr_get_ctx.peer = &peer2id; + GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply + (GNUNET_TIME_UNIT_SECONDS, 2), &do_get, + &curr_get_ctx); + } + else if (total_connections + failed_connections == expected_connections) + { + GNUNET_SCHEDULER_cancel (die_task); + die_task = + GNUNET_SCHEDULER_add_now (&end_badly, + "from topology_callback (too many failed connections)"); + } +} + + +static void +connect_topology (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) +{ + expected_connections = -1; + if ((pg != NULL) && (peers_left == 0)) + expected_connections = + GNUNET_TESTING_connect_topology (pg, GNUNET_TESTING_TOPOLOGY_CLIQUE, + GNUNET_TESTING_TOPOLOGY_OPTION_ALL, + 0.0, TIMEOUT, 12, NULL, NULL); + + GNUNET_SCHEDULER_cancel (die_task); + if (expected_connections == GNUNET_SYSERR) + die_task = + GNUNET_SCHEDULER_add_now (&end_badly, + "from connect topology (bad return)"); + else + die_task = + GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, + "from connect topology (timeout)"); +} + + +static void +peers_started_callback (void *cls, const struct GNUNET_PeerIdentity *id, + const struct GNUNET_CONFIGURATION_Handle *cfg, + struct GNUNET_TESTING_Daemon *d, const char *emsg) +{ + if (emsg != NULL) + { + FPRINTF (stderr, "Failed to start daemon: `%s'\n", emsg); + return; + } + GNUNET_assert (id != NULL); + if (peers_left == num_peers) + { + memcpy (&peer1id, id, sizeof (struct GNUNET_PeerIdentity)); + peer1dht = GNUNET_DHT_connect (cfg, 100); + if (peer1dht == NULL) + { + GNUNET_SCHEDULER_cancel (die_task); + die_task = + GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n"); + } + } + else + { + memcpy (&peer2id, id, sizeof (struct GNUNET_PeerIdentity)); + peer2dht = GNUNET_DHT_connect (cfg, 100); + if (peer2dht == NULL) + { + GNUNET_SCHEDULER_cancel (die_task); + die_task = + GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n"); + } + } + + + peers_left--; + + if (peers_left == 0) + { +#if VERBOSE + GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, + "All %d daemons started, now connecting peers!\n", num_peers); +#endif + GNUNET_SCHEDULER_cancel (die_task); + /* Set up task in case topology creation doesn't finish + * within a reasonable amount of time */ + die_task = + GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, + "from peers_started_callback"); + + GNUNET_SCHEDULER_add_now (&connect_topology, NULL); + ok = 0; + } +} + + +static void +run (void *cls, char *const *args, const char *cfgfile, + const struct GNUNET_CONFIGURATION_Handle *cfg) +{ + + if (GNUNET_YES != + GNUNET_CONFIGURATION_get_value_string (cfg, "paths", "servicehome", + &test_directory)) + { + ok = 404; + return; + } + + if (GNUNET_SYSERR == + GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers", + &num_peers)) + num_peers = DEFAULT_NUM_PEERS; + + peers_left = num_peers; + total_gets = num_peers; + gets_succeeded = 0; + /* Set up a task to end testing if peer start fails */ + die_task = + GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, + "didn't start all daemons in reasonable amount of time!!!"); + + pg = GNUNET_TESTING_daemons_start (cfg, num_peers, 10, num_peers, TIMEOUT, + NULL, NULL, &peers_started_callback, NULL, + &topology_callback, NULL, NULL); + +} + +static int +check () +{ + int ret; + + char *const argv[] = { "test-dht-twopeer", + "-c", + "test_dht_twopeer_data.conf", +#if VERBOSE + "-L", "DEBUG", +#endif + NULL + }; + struct GNUNET_GETOPT_CommandLineOption options[] = { + GNUNET_GETOPT_OPTION_END + }; + ret = + GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1, argv, + "test-dht-twopeer", "nohelp", options, &run, &ok); + if (ret != GNUNET_OK) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "`test-dht-twopeer': Failed with error code %d\n", ret); + } + return ok; +} + +int +main (int argc, char *argv[]) +{ + int ret; + + GNUNET_log_setup ("test-dht-twopeer", +#if VERBOSE + "DEBUG", +#else + "WARNING", +#endif + NULL); + ret = check (); + /** + * Need to remove base directory, subdirectories taken care + * of by the testing framework. + */ + if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK) + { + GNUNET_log (GNUNET_ERROR_TYPE_WARNING, + "Failed to remove testing directory %s\n", test_directory); + } + return ret; +} + +/* end of test_dht_twopeer.c */ |