2 This file is part of GNUnet.
3 (C) 2011 Christian Grothoff (and other contributing authors)
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.
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.
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.
22 * @file src/transport/gnunet-transport.c
23 * @brief Tool to help configure, measure and control the transport subsystem.
24 * @author Christian Grothoff
25 * @author Nathan Evans
27 * This utility can be used to test if a transport mechanism for
28 * GNUnet is properly configured.
32 #include "gnunet_util_lib.h"
33 #include "gnunet_resolver_service.h"
34 #include "gnunet_protocols.h"
35 #include "gnunet_transport_service.h"
36 #include "gnunet_nat_lib.h"
39 * How long do we wait for the NAT test to report success?
40 * Should match NAT_SERVER_TIMEOUT in 'nat_test.c'.
42 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 30)
43 #define RESOLUTION_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
46 * Which peer should we connect to?
51 * Handle to transport service.
53 static struct GNUNET_TRANSPORT_Handle *handle;
58 static int benchmark_send;
63 static int benchmark_receive;
68 static int benchmark_receive;
73 static int iterate_connections;
78 static int test_configuration;
83 static int monitor_connections;
91 * Global return value (0 success).
96 * Number of bytes of traffic we received so far.
98 static unsigned long long traffic_received;
101 * Number of bytes of traffic we sent so far.
103 static unsigned long long traffic_sent;
106 * Starting time of transmitting/receiving data.
108 static struct GNUNET_TIME_Absolute start_time;
111 * Handle for current transmission request.
113 static struct GNUNET_TRANSPORT_TransmitHandle *th;
116 * Identity of the peer we transmit to / connect to.
117 * (equivalent to 'cpid' string).
119 static struct GNUNET_PeerIdentity pid;
122 * Task scheduled for cleanup / termination of the process.
124 static GNUNET_SCHEDULER_TaskIdentifier end;
126 static struct GNUNET_CONTAINER_MultiHashMap *peers;
129 * Selected level of verbosity.
131 static int verbosity;
134 * Resolver process handle.
136 struct GNUNET_OS_Process *resolver;
139 * Number of tasks running that still need the resolver.
141 static unsigned int resolver_users;
145 * Context for a plugin test.
151 * Handle to the active NAT test.
153 struct GNUNET_NAT_Test *tst;
156 * Task identifier for the timeout.
158 GNUNET_SCHEDULER_TaskIdentifier tsk;
161 * Name of plugin under test.
169 * Display the result of the test.
171 * @param tc test context
172 * @param result GNUNET_YES on success
175 display_test_result (struct TestContext *tc, int result)
177 if (GNUNET_YES != result)
179 FPRINTF (stderr, "Configuration for plugin `%s' did not work!\n", tc->name);
183 FPRINTF (stderr, "Configuration for plugin `%s' is working!\n", tc->name);
185 if (GNUNET_SCHEDULER_NO_TASK != tc->tsk)
187 GNUNET_SCHEDULER_cancel (tc->tsk);
188 tc->tsk = GNUNET_SCHEDULER_NO_TASK;
192 GNUNET_NAT_test_stop (tc->tst);
197 if ((0 == resolver_users) && (NULL != resolver))
199 GNUNET_break (0 == GNUNET_OS_process_kill (resolver, SIGTERM));
200 GNUNET_OS_process_destroy (resolver);
207 * Function called by NAT on success.
208 * Clean up and update GUI (with success).
210 * @param cls test context
211 * @param success currently always GNUNET_OK
214 result_callback (void *cls, int success)
216 struct TestContext *tc = cls;
218 display_test_result (tc, success);
223 * Function called if NAT failed to confirm success.
224 * Clean up and update GUI (with failure).
226 * @param cls test context
227 * @param tc scheduler callback
230 fail_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
232 struct TestContext *tstc = cls;
234 tstc->tsk = GNUNET_SCHEDULER_NO_TASK;
235 display_test_result (tstc, GNUNET_NO);
240 * Test our plugin's configuration (NAT traversal, etc.).
242 * @param cfg configuration to test
245 do_test_configuration (const struct GNUNET_CONFIGURATION_Handle *cfg)
249 unsigned long long bnd_port;
250 unsigned long long adv_port;
251 struct TestContext *tc;
254 GNUNET_CONFIGURATION_get_value_string (cfg, "transport", "plugins",
260 ("No transport plugins configured, peer will never communicate\n"));
264 for (tok = strtok (plugins, " "); tok != NULL; tok = strtok (NULL, " "))
266 char section[12 + strlen (tok)];
268 GNUNET_snprintf (section, sizeof (section), "transport-%s", tok);
270 GNUNET_CONFIGURATION_get_value_number (cfg, section, "PORT", &bnd_port))
273 _("No port configured for plugin `%s', cannot test it\n"), tok);
277 GNUNET_CONFIGURATION_get_value_number (cfg, section, "ADVERTISED_PORT",
280 if (NULL == resolver)
282 GNUNET_OS_start_process (GNUNET_YES, NULL, NULL, "gnunet-service-resolver",
283 "gnunet-service-resolver", NULL);
285 GNUNET_RESOLVER_connect (cfg);
286 tc = GNUNET_malloc (sizeof (struct TestContext));
287 tc->name = GNUNET_strdup (tok);
289 GNUNET_NAT_test_start (cfg,
292 "udp")) ? GNUNET_NO : GNUNET_YES,
293 (uint16_t) bnd_port, (uint16_t) adv_port,
294 &result_callback, tc);
297 display_test_result (tc, GNUNET_SYSERR);
300 tc->tsk = GNUNET_SCHEDULER_add_delayed (TIMEOUT, &fail_timeout, tc);
302 GNUNET_free (plugins);
307 * Shutdown, print statistics.
310 do_disconnect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
312 struct GNUNET_TIME_Relative duration;
316 GNUNET_TRANSPORT_notify_transmit_ready_cancel (th);
319 GNUNET_TRANSPORT_disconnect (handle);
320 if (benchmark_receive)
322 duration = GNUNET_TIME_absolute_get_duration (start_time);
323 FPRINTF (stdout, _("Received %llu bytes/s (%llu bytes in %llu ms)\n"),
324 1000 * traffic_received / (1 + duration.rel_value),
325 traffic_received, (unsigned long long) duration.rel_value);
329 duration = GNUNET_TIME_absolute_get_duration (start_time);
330 FPRINTF (stdout, _("Transmitted %llu bytes/s (%llu bytes in %llu ms)\n"),
331 1000 * traffic_sent / (1 + duration.rel_value), traffic_sent,
332 (unsigned long long) duration.rel_value);
338 * Function called to notify a client about the socket
339 * begin ready to queue more data. "buf" will be
340 * NULL and "size" zero if the socket was closed for
341 * writing in the meantime.
344 * @param size number of bytes available in buf
345 * @param buf where the callee should write the message
346 * @return number of bytes written to buf
349 transmit_data (void *cls, size_t size, void *buf)
351 struct GNUNET_MessageHeader *m = buf;
353 GNUNET_assert (size >= sizeof (struct GNUNET_MessageHeader));
354 GNUNET_assert (size < GNUNET_SERVER_MAX_MESSAGE_SIZE);
355 m->size = ntohs (size);
356 m->type = ntohs (GNUNET_MESSAGE_TYPE_DUMMY);
357 memset (&m[1], 52, size - sizeof (struct GNUNET_MessageHeader));
358 traffic_sent += size;
359 th = GNUNET_TRANSPORT_notify_transmit_ready (handle, &pid, 32 * 1024, 0,
360 GNUNET_TIME_UNIT_FOREVER_REL,
361 &transmit_data, NULL);
363 FPRINTF (stdout, _("Transmitting %u bytes to %s\n"), (unsigned int) size,
370 * Function called to notify transport users that another
371 * peer connected to us.
374 * @param peer the peer that connected
375 * @param ats performance data
376 * @param ats_count number of entries in ats (excluding 0-termination)
379 notify_connect (void *cls, const struct GNUNET_PeerIdentity *peer,
380 const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
383 FPRINTF (stdout, _("Connected to %s\n"), GNUNET_i2s (peer));
384 if (0 != memcmp (&pid, peer, sizeof (struct GNUNET_PeerIdentity)))
389 start_time = GNUNET_TIME_absolute_get ();
390 th = GNUNET_TRANSPORT_notify_transmit_ready (handle, peer, 32 * 1024, 0,
391 GNUNET_TIME_UNIT_FOREVER_REL,
392 &transmit_data, NULL);
396 /* all done, terminate instantly */
397 GNUNET_SCHEDULER_cancel (end);
398 end = GNUNET_SCHEDULER_add_now (&do_disconnect, NULL);
404 * Function called to notify transport users that another
405 * peer disconnected from us.
408 * @param peer the peer that disconnected
411 notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
414 FPRINTF (stdout, _("Disconnected from %s\n"), GNUNET_i2s (peer));
415 if ((0 == memcmp (&pid, peer, sizeof (struct GNUNET_PeerIdentity))) &&
418 GNUNET_TRANSPORT_notify_transmit_ready_cancel (th);
420 GNUNET_SCHEDULER_cancel (end);
421 end = GNUNET_SCHEDULER_add_now (&do_disconnect, NULL);
427 * Function called by the transport for each received message.
430 * @param peer (claimed) identity of the other peer
431 * @param message the message
432 * @param ats performance data
433 * @param ats_count number of entries in ats
436 notify_receive (void *cls, const struct GNUNET_PeerIdentity *peer,
437 const struct GNUNET_MessageHeader *message,
438 const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
440 if (!benchmark_receive)
443 FPRINTF (stdout, _("Received %u bytes from %s\n"),
444 (unsigned int) ntohs (message->size), GNUNET_i2s (peer));
445 if (traffic_received == 0)
446 start_time = GNUNET_TIME_absolute_get ();
447 traffic_received += ntohs (message->size);
450 struct ResolutionContext
452 struct GNUNET_HELLO_Address *addrcp;
459 process_string (void *cls, const char *address)
461 struct ResolutionContext *rc = cls;
462 struct GNUNET_HELLO_Address *addrcp = rc->addrcp;
466 FPRINTF (stdout, _("Peer `%s': %s %s\n"), GNUNET_i2s (&addrcp->peer), addrcp->transport_name, address);
467 rc->printed = GNUNET_YES;
472 if (GNUNET_NO == rc->printed)
473 FPRINTF (stdout, _("Peer `%s': %s <unable to resolve address>\n"), GNUNET_i2s (&addrcp->peer), addrcp->transport_name);
474 GNUNET_free (rc->addrcp);
480 * Function to call with a binary address
483 * @param peer identity of the peer
484 * @param address binary address (NULL on disconnect)
487 process_address (void *cls, const struct GNUNET_PeerIdentity *peer,
488 const struct GNUNET_HELLO_Address *address)
490 const struct GNUNET_CONFIGURATION_Handle *cfg = cls;
491 struct ResolutionContext *rc;
501 FPRINTF (stdout, _("Peer `%s' disconnected\n"), GNUNET_i2s (peer));
505 rc = GNUNET_malloc(sizeof (struct ResolutionContext));
506 rc->addrcp = GNUNET_HELLO_address_copy(address);
507 rc->printed = GNUNET_NO;
509 GNUNET_assert (NULL != rc);
511 /* Resolve address to string */
512 GNUNET_TRANSPORT_address_to_string (cfg, address, numeric,
513 RESOLUTION_TIMEOUT, &process_string,
519 * Task run in monitor mode when the user presses CTRL-C to abort.
520 * Stops monitoring activity.
522 * @param cls the 'struct GNUNET_TRANSPORT_PeerIterateContext *'
523 * @param tc scheduler context
526 shutdown_task (void *cls,
527 const struct GNUNET_SCHEDULER_TaskContext *tc)
529 struct GNUNET_TRANSPORT_PeerIterateContext *pic = cls;
531 GNUNET_TRANSPORT_peer_get_active_addresses_cancel (pic);
535 GNUNET_CONTAINER_multihashmap_destroy (peers);
543 * Main function that will be run by the scheduler.
546 * @param args remaining command-line arguments
547 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
548 * @param cfg configuration
551 run (void *cls, char *const *args, const char *cfgfile,
552 const struct GNUNET_CONFIGURATION_Handle *cfg)
554 if (test_configuration)
556 do_test_configuration (cfg);
558 if (benchmark_send && (NULL == cpid))
560 FPRINTF (stderr, _("Option `%s' makes no sense without option `%s'.\n"),
567 if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string (cpid, &pid.hashPubKey))
569 FPRINTF (stderr, _("Failed to parse peer identity `%s'\n"), cpid);
573 GNUNET_TRANSPORT_connect (cfg, NULL, NULL, ¬ify_receive,
574 ¬ify_connect, ¬ify_disconnect);
575 GNUNET_TRANSPORT_try_connect (handle, &pid);
577 GNUNET_SCHEDULER_add_delayed (benchmark_send ?
578 GNUNET_TIME_UNIT_FOREVER_REL :
579 GNUNET_TIME_UNIT_SECONDS, &do_disconnect,
582 else if (benchmark_receive)
585 GNUNET_TRANSPORT_connect (cfg, NULL, NULL, ¬ify_receive,
586 ¬ify_connect, ¬ify_disconnect);
587 GNUNET_TRANSPORT_try_connect (handle, &pid);
589 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
590 &do_disconnect, NULL);
592 if (iterate_connections)
594 peers = GNUNET_CONTAINER_multihashmap_create (20);
595 GNUNET_TRANSPORT_peer_get_active_addresses (cfg, NULL, GNUNET_YES,
597 &process_address, (void *) cfg);
599 if (monitor_connections)
601 struct GNUNET_TRANSPORT_PeerIterateContext *pic;
603 pic = GNUNET_TRANSPORT_peer_get_active_addresses (cfg, NULL, GNUNET_NO,
604 GNUNET_TIME_UNIT_FOREVER_REL,
605 &process_address, (void *) cfg);
606 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
614 main (int argc, char *const *argv)
616 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
617 {'b', "benchmark", NULL,
618 gettext_noop ("measure how fast we are receiving data (until CTRL-C)"),
619 0, &GNUNET_GETOPT_set_one, &benchmark_receive},
620 {'C', "connect", "PEER",
621 gettext_noop ("try to connect to the given peer"),
622 1, &GNUNET_GETOPT_set_string, &cpid},
623 {'i', "information", NULL,
624 gettext_noop ("provide information about all current connections (once)"),
625 0, &GNUNET_GETOPT_set_one, &iterate_connections},
626 {'m', "monitor", NULL,
627 gettext_noop ("provide information about all current connections (continuously)"),
628 0, &GNUNET_GETOPT_set_one, &monitor_connections},
629 {'n', "numeric", NULL,
630 gettext_noop ("do not resolve hostnames"),
631 0, &GNUNET_GETOPT_set_one, &numeric},
634 ("send data for benchmarking to the other peer (until CTRL-C)"),
635 0, &GNUNET_GETOPT_set_one, &benchmark_send},
637 gettext_noop ("test transport configuration (involves external server)"),
638 0, &GNUNET_GETOPT_set_one, &test_configuration},
639 GNUNET_GETOPT_OPTION_VERBOSE (&verbosity),
640 GNUNET_GETOPT_OPTION_END
643 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
647 GNUNET_PROGRAM_run (argc, argv, "gnunet-transport",
649 ("Direct access to transport service."), options,
650 &run, NULL)) ? ret : 1;
654 /* end of gnunet-transport.c */