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 * Handle to our service's server.
68 static struct GNUNET_SERVER_Handle *GST_server;
73 struct GNUNET_CRYPTO_EccPublicKeyBinaryEncoded GST_my_public_key;
78 struct GNUNET_CRYPTO_EccPrivateKey *GST_my_private_key;
83 struct GNUNET_ATS_SchedulingHandle *GST_ats;
86 * DEBUGGING connection counter
88 static int connections;
91 * Hello address expiration
93 struct GNUNET_TIME_Relative hello_expiration;
97 * Transmit our HELLO message to the given (connected) neighbour.
99 * @param cls the 'HELLO' message
100 * @param target a connected neighbour
101 * @param address the address
102 * @param bandwidth_in inbound quota in NBO
103 * @param bandwidth_out outbound quota in NBO
106 transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *target,
107 const struct GNUNET_HELLO_Address *address,
108 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
109 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
111 const struct GNUNET_MessageHeader *hello = cls;
113 GST_neighbours_send (target, (const char *) hello, ntohs (hello->size),
114 hello_expiration, NULL, NULL);
119 * My HELLO has changed. Tell everyone who should know.
122 * @param hello new HELLO
125 process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
127 GST_clients_broadcast (hello, GNUNET_NO);
128 GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
134 * We received some payload. Prepare to pass it on to our clients.
136 * @param peer (claimed) identity of the other peer
137 * @param address the address
138 * @param session session used
139 * @param message the message to process
140 * @return how long the plugin should wait until receiving more data
142 static struct GNUNET_TIME_Relative
143 process_payload (const struct GNUNET_PeerIdentity *peer,
144 const struct GNUNET_HELLO_Address *address,
145 struct Session *session,
146 const struct GNUNET_MessageHeader *message)
148 struct GNUNET_TIME_Relative ret;
150 struct InboundMessage *im;
151 size_t msg_size = ntohs (message->size);
153 sizeof (struct InboundMessage) + msg_size;
154 char buf[size] GNUNET_ALIGN;
156 ret = GNUNET_TIME_UNIT_ZERO;
157 do_forward = GNUNET_SYSERR;
158 ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
160 if (!GST_neighbours_test_connected (peer))
163 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
164 "Discarded %u bytes type %u payload from peer `%s'\n", msg_size,
165 ntohs (message->type), GNUNET_i2s (peer));
167 GNUNET_STATISTICS_update (GST_stats,
169 ("# bytes payload discarded due to not connected peer "),
170 msg_size, GNUNET_NO);
174 if (do_forward != GNUNET_YES)
176 im = (struct InboundMessage *) buf;
177 im->header.size = htons (size);
178 im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
180 memcpy (&im[1], message, ntohs (message->size));
182 GST_clients_broadcast (&im->header, GNUNET_YES);
189 * Function called by the transport for each received message.
190 * This function should also be called with "NULL" for the
191 * message to signal that the other peer disconnected.
193 * @param cls closure, const char* with the name of the plugin we received the message from
194 * @param peer (claimed) identity of the other peer
195 * @param message the message, NULL if we only care about
196 * learning about the delay until we should receive again -- FIXME!
197 * @param session identifier used for this session (NULL for plugins
198 * that do not offer bi-directional communication to the sender
199 * using the same "connection")
200 * @param sender_address binary address of the sender (if we established the
201 * connection or are otherwise sure of it; should be NULL
202 * for inbound TCP/UDP connections since it it not clear
203 * that we could establish ourselves a connection to that
204 * IP address and get the same system)
205 * @param sender_address_len number of bytes in sender_address
206 * @return how long the plugin should wait until receiving more data
207 * (plugins that do not support this, can ignore the return value)
209 struct GNUNET_TIME_Relative
210 GST_receive_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
211 const struct GNUNET_MessageHeader *message,
212 struct Session *session,
213 const char *sender_address,
214 uint16_t sender_address_len)
216 const char *plugin_name = cls;
217 struct GNUNET_TIME_Relative ret;
218 struct GNUNET_HELLO_Address address;
221 address.peer = *peer;
222 address.address = sender_address;
223 address.address_length = sender_address_len;
224 address.transport_name = plugin_name;
225 ret = GNUNET_TIME_UNIT_ZERO;
228 type = ntohs (message->type);
229 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received Message with type %u from peer `%s'\n", type, GNUNET_i2s (peer));
231 GNUNET_STATISTICS_update (GST_stats,
233 ("# bytes total received"),
234 ntohs (message->size), GNUNET_NO);
238 case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
239 /* Legacy HELLO message, discard */
241 case GNUNET_MESSAGE_TYPE_HELLO:
242 GST_validation_handle_hello (message);
244 case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
245 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
246 "Processing `%s' from `%s'\n", "PING",
248 NULL) ? GST_plugins_a2s (&address) : "<inbound>");
249 GST_validation_handle_ping (peer, message, &address, session);
251 case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
252 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
253 "Processing `%s' from `%s'\n", "PONG",
255 NULL) ? GST_plugins_a2s (&address) : "<inbound>");
256 GST_validation_handle_pong (peer, message);
258 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
259 GST_neighbours_handle_connect (message, peer, &address, session);
261 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
262 GST_neighbours_handle_connect_ack (message, peer, &address, session);
264 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
265 GST_neighbours_handle_session_ack (message, peer, &address, session);
267 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
268 GST_neighbours_handle_disconnect_message (peer, message);
270 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
271 GST_neighbours_keepalive (peer);
273 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
274 GST_neighbours_keepalive_response (peer);
277 /* should be payload */
278 GNUNET_STATISTICS_update (GST_stats,
280 ("# bytes payload received"),
281 ntohs (message->size), GNUNET_NO);
282 ret = process_payload (peer, &address, session, message);
286 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
287 "Allowing receive from peer %s to continue in %llu ms\n",
288 GNUNET_i2s (peer), (unsigned long long) ret.rel_value);
294 * Function that will be called for each address the transport
295 * is aware that it might be reachable under. Update our HELLO.
297 * @param cls name of the plugin (const char*)
298 * @param add_remove should the address added (YES) or removed (NO) from the
299 * set of valid addresses?
300 * @param addr one of the addresses of the host
301 * the specific address format depends on the transport
302 * @param addrlen length of the address
303 * @param dest_plugin destination plugin to use this address with
306 plugin_env_address_change_notification (void *cls, int add_remove,
307 const void *addr, size_t addrlen,
308 const char *dest_plugin)
310 struct GNUNET_HELLO_Address address;
312 address.peer = GST_my_identity;
313 address.transport_name = dest_plugin;
314 address.address = addr;
315 address.address_length = addrlen;
316 GST_hello_modify_addresses (add_remove, &address);
321 * Function that will be called whenever the plugin internally
322 * cleans up a session pointer and hence the service needs to
323 * discard all of those sessions as well. Plugins that do not
324 * use sessions can simply omit calling this function and always
325 * use NULL wherever a session pointer is needed. This function
326 * should be called BEFORE a potential "TransmitContinuation"
327 * from the "TransmitFunction".
330 * @param peer which peer was the session for
331 * @param session which session is being destoyed
334 plugin_env_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
335 struct Session *session)
337 const char *transport_name = cls;
338 struct GNUNET_HELLO_Address address;
340 GNUNET_assert (strlen (transport_name) > 0);
341 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Session %p to peer `%s' ended \n",
342 session, GNUNET_i2s (peer));
344 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
346 "Telling ATS to destroy session %p from peer %s\n",
347 session, GNUNET_i2s (peer));
348 address.peer = *peer;
349 address.address = NULL;
350 address.address_length = 0;
351 address.transport_name = transport_name;
352 GST_neighbours_session_terminated (peer, session);
354 /* Tell ATS that session has ended */
355 GNUNET_ATS_address_destroyed (GST_ats, &address, session);
360 * Function that will be called to figure if an address is an loopback,
361 * LAN, WAN etc. address
364 * @param addr binary address
365 * @param addrlen length of the address
366 * @return ATS Information containing the network type
368 static struct GNUNET_ATS_Information
369 plugin_env_address_to_type (void *cls,
370 const struct sockaddr *addr,
373 struct GNUNET_ATS_Information ats;
374 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
375 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
381 if (((addr->sa_family != AF_INET) && (addrlen != sizeof (struct sockaddr_in))) &&
382 ((addr->sa_family != AF_INET6) && (addrlen != sizeof (struct sockaddr_in6))) &&
383 (addr->sa_family != AF_UNIX))
385 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Malformed address with length %u `%s'\n",
387 GNUNET_a2s(addr, addrlen));
391 return GNUNET_ATS_address_get_type(GST_ats, addr, addrlen);
396 * Notify ATS about the new address including the network this address is
399 * @param address the address
400 * @param session the session
403 GST_ats_add_address (struct GNUNET_HELLO_Address *address,
406 struct GNUNET_TRANSPORT_PluginFunctions *papi;
407 struct GNUNET_ATS_Information ats;
410 /* valid new address, let ATS know! */
411 if (NULL == address->transport_name)
416 if (NULL == (papi = GST_plugins_find (address->transport_name)))
418 /* we don't have the plugin for this address */
423 net = papi->get_network (NULL, session);
424 if (GNUNET_ATS_NET_UNSPECIFIED == net)
426 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
427 _("Could not obtain a valid network for `%s' %s\n"),
428 GNUNET_i2s (&address->peer), GST_plugins_a2s (address));
431 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
432 ats.value = htonl(net);
433 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
434 "Notifying ATS about peer `%s''s new address `%s' session %p in network %s\n",
435 GNUNET_i2s (&address->peer),
436 (0 == address->address_length) ? "<inbound>" : GST_plugins_a2s (address),
438 GNUNET_ATS_print_network_type(net));
439 GNUNET_ATS_address_add (GST_ats,
440 address, session, &ats, 1);
445 * Notify ATS about property changes to an address
447 * @param peer the peer
448 * @param address the address
449 * @param session the session
450 * @param ats performance information
451 * @param ats_count number of elements in ats
454 GST_ats_update_metrics (const struct GNUNET_PeerIdentity *peer,
455 const struct GNUNET_HELLO_Address *address,
456 struct Session *session,
457 const struct GNUNET_ATS_Information *ats,
460 struct GNUNET_ATS_Information *ats_new;
461 /* Call to manipulation to manipulate ATS information */
462 ats_new = GST_manipulation_manipulate_metrics (peer, address, session, ats, ats_count);
468 if (GNUNET_NO == GNUNET_ATS_address_update (GST_ats, address, session, ats_new, ats_count))
470 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
471 _("Address or session unknown: failed to update properties for peer `%s' plugin `%s' address `%s' session %p\n"),
472 GNUNET_i2s (peer), address->transport_name, GST_plugins_a2s (address), session);
474 GNUNET_free (ats_new);
479 * Function that will be called to figure if an address is an loopback,
480 * LAN, WAN etc. address
483 * @param peer the peer
484 * @param address binary address
485 * @param address_len length of the address
486 * @param session the session
487 * @param ats the ats information to update
488 * @param ats_count the number of ats elements
491 plugin_env_update_metrics (void *cls,
492 const struct GNUNET_PeerIdentity *peer,
494 uint16_t address_len,
495 struct Session *session,
496 const struct GNUNET_ATS_Information *ats,
499 struct GNUNET_HELLO_Address haddress;
500 const char *plugin_name = cls;
502 if ((NULL == ats) || (0 == ats_count))
504 GNUNET_assert (NULL != GST_ats);
507 haddress.peer = *peer;
508 haddress.address = address;
509 haddress.address_length = address_len;
510 haddress.transport_name = plugin_name;
512 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating metrics for peer `%s' address %s session %p\n",
513 GNUNET_i2s (peer), GST_plugins_a2s(&haddress), session);
514 GST_ats_update_metrics (peer, &haddress, session, ats, ats_count);
518 plugin_env_session_start (void *cls,
519 const struct GNUNET_PeerIdentity *peer,
522 uint16_t address_len,
523 struct Session *session,
524 const struct GNUNET_ATS_Information *ats,
537 if ((address_len != 0) && (NULL == address))
548 struct GNUNET_HELLO_Address *addr;
549 addr = GNUNET_HELLO_address_allocate (peer, plugin, address, address_len);
550 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
551 "Notification from plugin `%s' about new session %p from peer `%s' address `%s'\n",
552 plugin, session, GNUNET_i2s (peer), GST_plugins_a2s(addr));
553 GST_ats_add_address (addr, session);
556 GST_ats_update_metrics (peer, addr, session, ats, ats_count);
561 * Function called by ATS to notify the callee that the
562 * assigned bandwidth or address for a given peer was changed. If the
563 * callback is called with address/bandwidth assignments of zero, the
564 * ATS disconnect function will still be called once the disconnect
568 * @param address address to use (for peer given in address)
569 * @param session session to use (if available)
570 * @param bandwidth_out assigned outbound bandwidth for the connection, 0 to disconnect from peer
571 * @param bandwidth_in assigned inbound bandwidth for the connection, 0 to disconnect from peer
572 * @param ats ATS information
573 * @param ats_count number of ATS elements
576 ats_request_address_change (void *cls,
577 const struct GNUNET_HELLO_Address *address,
578 struct Session *session,
579 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
580 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
581 const struct GNUNET_ATS_Information *ats,
584 uint32_t bw_in = ntohl (bandwidth_in.value__);
585 uint32_t bw_out = ntohl (bandwidth_out.value__);
587 /* ATS tells me to disconnect from peer */
588 if ((bw_in == 0) && (bw_out == 0))
590 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
591 "ATS tells me to disconnect from peer `%s'\n",
592 GNUNET_i2s (&address->peer));
593 GST_neighbours_force_disconnect (&address->peer);
596 GST_neighbours_switch_to_address (&address->peer, address, session, ats,
597 ats_count, bandwidth_in,
603 * Function called to notify transport users that another
604 * peer connected to us.
607 * @param peer the peer that connected
608 * @param bandwidth_in inbound bandwidth in NBO
609 * @param bandwidth_out outbound bandwidth in NBO
612 neighbours_connect_notification (void *cls,
613 const struct GNUNET_PeerIdentity *peer,
614 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
615 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
617 size_t len = sizeof (struct ConnectInfoMessage);
618 char buf[len] GNUNET_ALIGN;
619 struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
622 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
623 "We are now connected to peer `%s' and %u peers in total\n",
624 GNUNET_i2s (peer), connections);
626 connect_msg->header.size = htons (sizeof (buf));
627 connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
628 connect_msg->id = *peer;
629 connect_msg->quota_in = bandwidth_in;
630 connect_msg->quota_out = bandwidth_out;
631 GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
636 * Function called to notify transport users that another
637 * peer disconnected from us.
640 * @param peer the peer that disconnected
643 neighbours_disconnect_notification (void *cls,
644 const struct GNUNET_PeerIdentity *peer)
646 struct DisconnectInfoMessage disconnect_msg;
649 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
650 "Peer `%s' disconnected and we are connected to %u peers\n",
651 GNUNET_i2s (peer), connections);
653 GST_manipulation_peer_disconnect (peer);
654 disconnect_msg.header.size = htons (sizeof (struct DisconnectInfoMessage));
655 disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
656 disconnect_msg.reserved = htonl (0);
657 disconnect_msg.peer = *peer;
658 GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
663 * Function called to notify transport users that a neighbour peer changed its
667 * @param peer peer this update is about (never NULL)
668 * @param address address, NULL on disconnect
671 neighbours_address_notification (void *cls,
672 const struct GNUNET_PeerIdentity *peer,
673 const struct GNUNET_HELLO_Address *address)
675 GST_clients_broadcast_address_notification (peer, address);
680 * Function called when the service shuts down. Unloads our plugins
681 * and cancels pending validations.
683 * @param cls closure, unused
684 * @param tc task context (unused)
687 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
689 GST_neighbours_stop ();
690 GST_validation_stop ();
691 GST_plugins_unload ();
693 GNUNET_ATS_scheduling_done (GST_ats);
696 GST_blacklist_stop ();
698 GST_manipulation_stop ();
700 if (NULL != GST_peerinfo)
702 GNUNET_PEERINFO_disconnect (GST_peerinfo);
705 if (NULL != GST_stats)
707 GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
710 if (NULL != GST_my_private_key)
712 GNUNET_CRYPTO_ecc_key_free (GST_my_private_key);
713 GST_my_private_key = NULL;
720 * Initiate transport service.
723 * @param server the initialized server
724 * @param c configuration to use
727 run (void *cls, struct GNUNET_SERVER_Handle *server,
728 const struct GNUNET_CONFIGURATION_Handle *c)
731 struct GNUNET_CRYPTO_EccPrivateKey *pk;
732 long long unsigned int max_fd_cfg;
740 GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
743 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
745 ("Transport service is lacking key configuration settings. Exiting.\n"));
746 GNUNET_SCHEDULER_shutdown ();
750 GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION",
753 hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
756 pk = GNUNET_CRYPTO_ecc_key_create_from_file (keyfile);
757 GNUNET_free (keyfile);
758 GNUNET_assert (NULL != pk);
759 GST_my_private_key = pk;
761 GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
762 GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
763 GNUNET_CRYPTO_ecc_key_get_public (GST_my_private_key, &GST_my_public_key);
764 GNUNET_CRYPTO_hash (&GST_my_public_key, sizeof (GST_my_public_key),
765 &GST_my_identity.hashPubKey);
766 GNUNET_assert (NULL != GST_my_private_key);
768 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
770 if (NULL == GST_peerinfo)
772 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
773 _("Could not access PEERINFO service. Exiting.\n"));
774 GNUNET_SCHEDULER_shutdown ();
782 struct rlimit r_file;
783 if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
785 max_fd_rlimit = r_file.rlim_cur;
786 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
787 "Maximum number of open files was: %u/%u\n", r_file.rlim_cur,
790 max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
792 GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD", &max_fd_cfg);
794 if (max_fd_cfg > max_fd_rlimit)
797 max_fd = max_fd_rlimit;
798 if (max_fd < DEFAULT_MAX_FDS)
799 max_fd = DEFAULT_MAX_FDS;
801 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
802 "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
803 max_fd, (max_fd / 3) , (max_fd / 3) * 2);
805 friend_only = GNUNET_CONFIGURATION_get_value_yesno(GST_cfg, "topology","FRIENDS-ONLY");
806 if (GNUNET_SYSERR == friend_only)
807 friend_only = GNUNET_NO; /* According to topology defaults */
808 /* start subsystems */
809 GST_hello_start (friend_only, &process_hello_update, NULL);
810 GNUNET_assert (NULL != GST_hello_get());
811 GST_blacklist_start (GST_server, GST_cfg, &GST_my_identity);
813 GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change, NULL);
814 GST_manipulation_init (GST_cfg);
815 GST_plugins_load (&GST_manipulation_recv,
816 &plugin_env_address_change_notification,
817 &plugin_env_session_start,
818 &plugin_env_session_end,
819 &plugin_env_address_to_type,
820 &plugin_env_update_metrics);
821 GST_neighbours_start (NULL,
822 &neighbours_connect_notification,
823 &neighbours_disconnect_notification,
824 &neighbours_address_notification,
826 GST_clients_start (GST_server);
827 GST_validation_start ((max_fd / 3));
832 * The main function for the transport service.
834 * @param argc number of arguments from the command line
835 * @param argv command line arguments
836 * @return 0 ok, 1 on error
839 main (int argc, char *const *argv)
842 GNUNET_SERVICE_run (argc, argv, "transport",
843 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
846 /* end of file gnunet-service-transport.c */