2 This file is part of GNUnet.
3 (C) 2010,2011 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.
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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 transport/gnunet-service-transport.c
24 * @author Christian Grothoff
27 #include "gnunet_util_lib.h"
28 #include "gnunet_hello_lib.h"
29 #include "gnunet_statistics_service.h"
30 #include "gnunet_transport_service.h"
31 #include "gnunet_peerinfo_service.h"
32 #include "gnunet_ats_service.h"
33 #include "gnunet-service-transport.h"
34 #include "gnunet-service-transport_blacklist.h"
35 #include "gnunet-service-transport_clients.h"
36 #include "gnunet-service-transport_hello.h"
37 #include "gnunet-service-transport_neighbours.h"
38 #include "gnunet-service-transport_plugins.h"
39 #include "gnunet-service-transport_validation.h"
40 #include "gnunet-service-transport_manipulation.h"
41 #include "transport.h"
48 struct GNUNET_STATISTICS_Handle *GST_stats;
51 * Configuration handle.
53 const struct GNUNET_CONFIGURATION_Handle *GST_cfg;
56 * Configuration handle.
58 struct GNUNET_PeerIdentity GST_my_identity;
61 * Handle to peerinfo service.
63 struct GNUNET_PEERINFO_Handle *GST_peerinfo;
66 * Hostkey generation context
68 struct GNUNET_CRYPTO_EccKeyGenerationContext *GST_keygen;
71 * Handle to our service's server.
73 static struct GNUNET_SERVER_Handle *GST_server;
78 struct GNUNET_CRYPTO_EccPublicKeyBinaryEncoded GST_my_public_key;
83 struct GNUNET_CRYPTO_EccPrivateKey *GST_my_private_key;
88 struct GNUNET_ATS_SchedulingHandle *GST_ats;
91 * DEBUGGING connection counter
93 static int connections;
96 * Hello address expiration
98 struct GNUNET_TIME_Relative hello_expiration;
102 * Transmit our HELLO message to the given (connected) neighbour.
104 * @param cls the 'HELLO' message
105 * @param target a connected neighbour
106 * @param ats performance information (unused)
107 * @param ats_count number of records in ats (unused)
108 * @param address the address
109 * @param bandwidth_in inbound quota in NBO
110 * @param bandwidth_out outbound quota in NBO
113 transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *target,
114 const struct GNUNET_ATS_Information *ats,
116 const struct GNUNET_HELLO_Address *address,
117 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
118 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
120 const struct GNUNET_MessageHeader *hello = cls;
122 GST_neighbours_send (target, (const char *) hello, ntohs (hello->size),
123 hello_expiration, NULL, NULL);
128 * My HELLO has changed. Tell everyone who should know.
131 * @param hello new HELLO
134 process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
136 GST_clients_broadcast (hello, GNUNET_NO);
137 GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
143 * We received some payload. Prepare to pass it on to our clients.
145 * @param peer (claimed) identity of the other peer
146 * @param address the address
147 * @param session session used
148 * @param message the message to process
149 * @param ats performance information
150 * @param ats_count number of records in ats
151 * @return how long the plugin should wait until receiving more data
153 static struct GNUNET_TIME_Relative
154 process_payload (const struct GNUNET_PeerIdentity *peer,
155 const struct GNUNET_HELLO_Address *address,
156 struct Session *session,
157 const struct GNUNET_MessageHeader *message,
158 const struct GNUNET_ATS_Information *ats, uint32_t ats_count)
160 struct GNUNET_TIME_Relative ret;
162 struct InboundMessage *im;
163 size_t msg_size = ntohs (message->size);
165 sizeof (struct InboundMessage) + msg_size +
166 sizeof (struct GNUNET_ATS_Information) * (ats_count + 1);
167 char buf[size] GNUNET_ALIGN;
168 struct GNUNET_ATS_Information *ap;
170 ret = GNUNET_TIME_UNIT_ZERO;
171 do_forward = GNUNET_SYSERR;
172 ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
174 if (!GST_neighbours_test_connected (peer))
177 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
178 "Discarded %u bytes type %u payload from peer `%s'\n", msg_size,
179 ntohs (message->type), GNUNET_i2s (peer));
181 GNUNET_STATISTICS_update (GST_stats,
183 ("# bytes payload discarded due to not connected peer "),
184 msg_size, GNUNET_NO);
188 if (do_forward != GNUNET_YES)
190 im = (struct InboundMessage *) buf;
191 im->header.size = htons (size);
192 im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
193 im->ats_count = htonl (ats_count + 1);
195 ap = (struct GNUNET_ATS_Information *) &im[1];
196 memcpy (ap, ats, ats_count * sizeof (struct GNUNET_ATS_Information));
197 ap[ats_count].type = htonl (GNUNET_ATS_QUALITY_NET_DELAY);
198 ap[ats_count].value =
199 htonl ((uint32_t) GST_neighbour_get_latency (peer).rel_value);
200 memcpy (&ap[ats_count + 1], message, ntohs (message->size));
202 GNUNET_ATS_address_add (GST_ats, address, session, ap, ats_count + 1);
203 GNUNET_ATS_address_update (GST_ats, address, session, ap, ats_count + 1);
204 GST_clients_broadcast (&im->header, GNUNET_YES);
211 * Function called by the transport for each received message.
212 * This function should also be called with "NULL" for the
213 * message to signal that the other peer disconnected.
215 * @param cls closure, const char* with the name of the plugin we received the message from
216 * @param peer (claimed) identity of the other peer
217 * @param message the message, NULL if we only care about
218 * learning about the delay until we should receive again -- FIXME!
219 * @param ats performance information
220 * @param ats_count number of records in ats
221 * @param session identifier used for this session (NULL for plugins
222 * that do not offer bi-directional communication to the sender
223 * using the same "connection")
224 * @param sender_address binary address of the sender (if we established the
225 * connection or are otherwise sure of it; should be NULL
226 * for inbound TCP/UDP connections since it it not clear
227 * that we could establish ourselves a connection to that
228 * IP address and get the same system)
229 * @param sender_address_len number of bytes in sender_address
230 * @return how long the plugin should wait until receiving more data
231 * (plugins that do not support this, can ignore the return value)
233 struct GNUNET_TIME_Relative
234 GST_receive_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
235 const struct GNUNET_MessageHeader *message,
236 struct Session *session,
237 const char *sender_address,
238 uint16_t sender_address_len)
240 const char *plugin_name = cls;
241 struct GNUNET_TIME_Relative ret;
242 struct GNUNET_HELLO_Address address;
245 address.peer = *peer;
246 address.address = sender_address;
247 address.address_length = sender_address_len;
248 address.transport_name = plugin_name;
249 ret = GNUNET_TIME_UNIT_ZERO;
252 type = ntohs (message->type);
253 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received Message with type %u from peer `%s'\n", type, GNUNET_i2s (peer));
255 GNUNET_STATISTICS_update (GST_stats,
257 ("# bytes total received"),
258 ntohs (message->size), GNUNET_NO);
262 case GNUNET_MESSAGE_TYPE_HELLO:
263 GST_validation_handle_hello (message);
265 case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
266 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
267 "Processing `%s' from `%s'\n", "PING",
269 NULL) ? GST_plugins_a2s (&address) : "<inbound>");
270 GST_validation_handle_ping (peer, message, &address, session);
272 case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
273 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
274 "Processing `%s' from `%s'\n", "PONG",
276 NULL) ? GST_plugins_a2s (&address) : "<inbound>");
277 GST_validation_handle_pong (peer, message);
279 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
280 GST_neighbours_handle_connect (message, peer, &address, session, NULL, 0);
282 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
283 GST_neighbours_handle_connect_ack (message, peer, &address, session, NULL, 0);
285 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
286 GST_neighbours_handle_session_ack (message, peer, &address, session, NULL, 0);
288 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
289 GST_neighbours_handle_disconnect_message (peer, message);
291 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
292 GST_neighbours_keepalive (peer);
294 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
295 GST_neighbours_keepalive_response (peer, NULL, 0);
298 /* should be payload */
299 GNUNET_STATISTICS_update (GST_stats,
301 ("# bytes payload received"),
302 ntohs (message->size), GNUNET_NO);
303 ret = process_payload (peer, &address, session, message, NULL, 0);
307 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
308 "Allowing receive from peer %s to continue in %llu ms\n",
309 GNUNET_i2s (peer), (unsigned long long) ret.rel_value);
315 * Function that will be called for each address the transport
316 * is aware that it might be reachable under. Update our HELLO.
318 * @param cls name of the plugin (const char*)
319 * @param add_remove should the address added (YES) or removed (NO) from the
320 * set of valid addresses?
321 * @param addr one of the addresses of the host
322 * the specific address format depends on the transport
323 * @param addrlen length of the address
324 * @param dest_plugin destination plugin to use this address with
327 plugin_env_address_change_notification (void *cls, int add_remove,
328 const void *addr, size_t addrlen,
329 const char *dest_plugin)
331 struct GNUNET_HELLO_Address address;
333 address.peer = GST_my_identity;
334 address.transport_name = dest_plugin;
335 address.address = addr;
336 address.address_length = addrlen;
337 GST_hello_modify_addresses (add_remove, &address);
342 * Function that will be called whenever the plugin internally
343 * cleans up a session pointer and hence the service needs to
344 * discard all of those sessions as well. Plugins that do not
345 * use sessions can simply omit calling this function and always
346 * use NULL wherever a session pointer is needed. This function
347 * should be called BEFORE a potential "TransmitContinuation"
348 * from the "TransmitFunction".
351 * @param peer which peer was the session for
352 * @param session which session is being destoyed
355 plugin_env_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
356 struct Session *session)
358 const char *transport_name = cls;
359 struct GNUNET_HELLO_Address address;
361 GNUNET_assert (strlen (transport_name) > 0);
362 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Session %p to peer `%s' ended \n",
363 session, GNUNET_i2s (peer));
365 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
367 "Telling ATS to destroy session %p from peer %s\n",
368 session, GNUNET_i2s (peer));
369 address.peer = *peer;
370 address.address = NULL;
371 address.address_length = 0;
372 address.transport_name = transport_name;
373 GST_neighbours_session_terminated (peer, session);
375 /* Tell ATS that session has ended */
376 GNUNET_ATS_address_destroyed (GST_ats, &address, session);
381 * Function that will be called to figure if an address is an loopback,
382 * LAN, WAN etc. address
385 * @param addr binary address
386 * @param addrlen length of the address
387 * @return ATS Information containing the network type
389 static struct GNUNET_ATS_Information
390 plugin_env_address_to_type (void *cls,
391 const struct sockaddr *addr,
394 struct GNUNET_ATS_Information ats;
395 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
396 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
402 if (((addr->sa_family != AF_INET) && (addrlen != sizeof (struct sockaddr_in))) &&
403 ((addr->sa_family != AF_INET6) && (addrlen != sizeof (struct sockaddr_in6))) &&
404 (addr->sa_family != AF_UNIX))
406 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Malformed address with length %u `%s'\n",
408 GNUNET_a2s(addr, addrlen));
412 return GNUNET_ATS_address_get_type(GST_ats, addr, addrlen);
416 * Function that will be called to figure if an address is an loopback,
417 * LAN, WAN etc. address
420 * @param addr binary address
421 * @param addrlen length of the address
422 * @return ATS Information containing the network type
425 plugin_env_update_metrics (void *cls,
426 const struct GNUNET_PeerIdentity *peer,
428 uint16_t address_len,
429 struct Session *session,
430 struct GNUNET_ATS_Information *ats,
433 struct GNUNET_HELLO_Address haddress;
434 const char *plugin_name = cls;
436 if ((NULL == ats) || (0 == ats_count))
438 GNUNET_assert (NULL != GST_ats);
440 haddress.peer = *peer;
441 haddress.address = address;
442 haddress.address_length = address_len;
443 haddress.transport_name = plugin_name;
445 GNUNET_ATS_address_update (GST_ats, &haddress, session, ats, ats_count);
450 * Function called by ATS to notify the callee that the
451 * assigned bandwidth or address for a given peer was changed. If the
452 * callback is called with address/bandwidth assignments of zero, the
453 * ATS disconnect function will still be called once the disconnect
457 * @param address address to use (for peer given in address)
458 * @param session session to use (if available)
459 * @param bandwidth_out assigned outbound bandwidth for the connection, 0 to disconnect from peer
460 * @param bandwidth_in assigned inbound bandwidth for the connection, 0 to disconnect from peer
461 * @param ats ATS information
462 * @param ats_count number of ATS elements
465 ats_request_address_change (void *cls,
466 const struct GNUNET_HELLO_Address *address,
467 struct Session *session,
468 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
469 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
470 const struct GNUNET_ATS_Information *ats,
473 uint32_t bw_in = ntohl (bandwidth_in.value__);
474 uint32_t bw_out = ntohl (bandwidth_out.value__);
476 /* ATS tells me to disconnect from peer */
477 if ((bw_in == 0) && (bw_out == 0))
479 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
480 "ATS tells me to disconnect from peer `%s'\n",
481 GNUNET_i2s (&address->peer));
482 GST_neighbours_force_disconnect (&address->peer);
485 GST_neighbours_switch_to_address (&address->peer, address, session, ats,
486 ats_count, bandwidth_in,
492 * Function called to notify transport users that another
493 * peer connected to us.
496 * @param peer the peer that connected
497 * @param ats performance data
498 * @param ats_count number of entries in ats
499 * @param bandwidth_in inbound bandwidth in NBO
500 * @param bandwidth_out outbound bandwidth in NBO
503 neighbours_connect_notification (void *cls,
504 const struct GNUNET_PeerIdentity *peer,
505 const struct GNUNET_ATS_Information *ats,
507 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
508 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
511 sizeof (struct ConnectInfoMessage) +
512 ats_count * sizeof (struct GNUNET_ATS_Information);
513 char buf[len] GNUNET_ALIGN;
514 struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
515 struct GNUNET_ATS_Information *ap;
518 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
519 "We are now connected to peer `%s' and %u peers in total\n",
520 GNUNET_i2s (peer), connections);
522 connect_msg->header.size = htons (sizeof (buf));
523 connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
524 connect_msg->ats_count = htonl (ats_count);
525 connect_msg->id = *peer;
526 connect_msg->quota_in = bandwidth_in;
527 connect_msg->quota_out = bandwidth_out;
528 ap = (struct GNUNET_ATS_Information *) &connect_msg[1];
529 memcpy (ap, ats, ats_count * sizeof (struct GNUNET_ATS_Information));
530 GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
535 * Function called to notify transport users that another
536 * peer disconnected from us.
539 * @param peer the peer that disconnected
542 neighbours_disconnect_notification (void *cls,
543 const struct GNUNET_PeerIdentity *peer)
545 struct DisconnectInfoMessage disconnect_msg;
548 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
549 "Peer `%s' disconnected and we are connected to %u peers\n",
550 GNUNET_i2s (peer), connections);
552 disconnect_msg.header.size = htons (sizeof (struct DisconnectInfoMessage));
553 disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
554 disconnect_msg.reserved = htonl (0);
555 disconnect_msg.peer = *peer;
556 GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
561 * Function called to notify transport users that a neighbour peer changed its
565 * @param peer peer this update is about (never NULL)
566 * @param address address, NULL on disconnect
569 neighbours_address_notification (void *cls,
570 const struct GNUNET_PeerIdentity *peer,
571 const struct GNUNET_HELLO_Address *address)
573 GST_clients_broadcast_address_notification (peer, address);
578 * Function called when the service shuts down. Unloads our plugins
579 * and cancels pending validations.
581 * @param cls closure, unused
582 * @param tc task context (unused)
585 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
587 if (NULL != GST_keygen)
589 GNUNET_CRYPTO_ecc_key_create_stop (GST_keygen);
592 GST_neighbours_stop ();
593 GST_validation_stop ();
594 GST_plugins_unload ();
596 GNUNET_ATS_scheduling_done (GST_ats);
599 GST_blacklist_stop ();
601 GST_manipulation_stop ();
603 if (NULL != GST_peerinfo)
605 GNUNET_PEERINFO_disconnect (GST_peerinfo);
608 if (NULL != GST_stats)
610 GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
613 if (NULL != GST_my_private_key)
615 GNUNET_CRYPTO_ecc_key_free (GST_my_private_key);
616 GST_my_private_key = NULL;
623 * Callback for hostkey read/generation
626 * @param pk the private key
627 * @param emsg error message
630 key_generation_cb (void *cls,
631 struct GNUNET_CRYPTO_EccPrivateKey *pk,
634 long long unsigned int max_fd_cfg;
641 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
642 _("Transport service could not access hostkey: %s. Exiting.\n"),
644 GNUNET_SCHEDULER_shutdown ();
647 GST_my_private_key = pk;
649 GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
650 GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
651 GNUNET_CRYPTO_ecc_key_get_public (GST_my_private_key, &GST_my_public_key);
652 GNUNET_CRYPTO_hash (&GST_my_public_key, sizeof (GST_my_public_key),
653 &GST_my_identity.hashPubKey);
654 GNUNET_assert (NULL != GST_my_private_key);
656 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
658 if (NULL == GST_peerinfo)
660 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
661 _("Could not access PEERINFO service. Exiting.\n"));
662 GNUNET_SCHEDULER_shutdown ();
670 struct rlimit r_file;
671 if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
673 max_fd_rlimit = r_file.rlim_cur;
674 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
675 "Maximum number of open files was: %u/%u\n", r_file.rlim_cur,
678 max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
680 GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD", &max_fd_cfg);
682 if (max_fd_cfg > max_fd_rlimit)
685 max_fd = max_fd_rlimit;
686 if (max_fd < DEFAULT_MAX_FDS)
687 max_fd = DEFAULT_MAX_FDS;
689 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
690 "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
691 max_fd, (max_fd / 3) , (max_fd / 3) * 2);
693 /* start subsystems */
694 GST_hello_start (&process_hello_update, NULL);
695 GNUNET_assert (NULL != GST_hello_get());
696 GST_blacklist_start (GST_server);
698 GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change, NULL);
699 GST_manipulation_init (GST_cfg);
700 GST_plugins_load (&GST_manipulation_recv,
701 &plugin_env_address_change_notification,
702 &plugin_env_session_end,
703 &plugin_env_address_to_type,
704 &plugin_env_update_metrics);
705 GST_neighbours_start (NULL,
706 &neighbours_connect_notification,
707 &neighbours_disconnect_notification,
708 &neighbours_address_notification,
710 GST_clients_start (GST_server);
711 GST_validation_start ((max_fd / 3));
712 if (NULL != GST_server)
713 GNUNET_SERVER_resume (GST_server);
718 * Initiate transport service.
721 * @param server the initialized server
722 * @param c configuration to use
725 run (void *cls, struct GNUNET_SERVER_Handle *server,
726 const struct GNUNET_CONFIGURATION_Handle *c)
733 GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
736 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
738 ("Transport service is lacking key configuration settings. Exiting.\n"));
739 GNUNET_SCHEDULER_shutdown ();
743 GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION",
746 hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
749 GNUNET_SERVER_suspend (server);
750 GST_keygen = GNUNET_CRYPTO_ecc_key_create_start (keyfile, &key_generation_cb, NULL);
751 GNUNET_free (keyfile);
752 if (NULL == GST_keygen)
754 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
755 _("Transport service is unable to access hostkey. Exiting.\n"));
756 GNUNET_SCHEDULER_shutdown ();
762 * The main function for the transport service.
764 * @param argc number of arguments from the command line
765 * @param argv command line arguments
766 * @return 0 ok, 1 on error
769 main (int argc, char *const *argv)
772 GNUNET_SERVICE_run (argc, argv, "transport",
773 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
776 /* end of file gnunet-service-transport.c */