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.
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 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_EddsaPrivateKey *GST_my_private_key;
78 struct GNUNET_ATS_SchedulingHandle *GST_ats;
81 * DEBUGGING connection counter
83 static int connections;
86 * Hello address expiration
88 struct GNUNET_TIME_Relative hello_expiration;
92 * Transmit our HELLO message to the given (connected) neighbour.
94 * @param cls the 'HELLO' message
95 * @param target a connected neighbour
96 * @param address the address
97 * @param bandwidth_in inbound quota in NBO
98 * @param bandwidth_out outbound quota in NBO
101 transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *target,
102 const struct GNUNET_HELLO_Address *address,
103 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
104 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
106 const struct GNUNET_MessageHeader *hello = cls;
108 GST_neighbours_send (target, (const char *) hello, ntohs (hello->size),
109 hello_expiration, NULL, NULL);
114 * My HELLO has changed. Tell everyone who should know.
117 * @param hello new HELLO
120 process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
122 GST_clients_broadcast (hello, GNUNET_NO);
123 GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
129 * We received some payload. Prepare to pass it on to our clients.
131 * @param peer (claimed) identity of the other peer
132 * @param address the address
133 * @param session session used
134 * @param message the message to process
135 * @return how long the plugin should wait until receiving more data
137 static struct GNUNET_TIME_Relative
138 process_payload (const struct GNUNET_PeerIdentity *peer,
139 const struct GNUNET_HELLO_Address *address,
140 struct Session *session,
141 const struct GNUNET_MessageHeader *message)
143 struct GNUNET_TIME_Relative ret;
145 struct InboundMessage *im;
146 size_t msg_size = ntohs (message->size);
148 sizeof (struct InboundMessage) + msg_size;
149 char buf[size] GNUNET_ALIGN;
151 do_forward = GNUNET_SYSERR;
152 ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
154 if (! GST_neighbours_test_connected (peer))
157 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
158 "Discarded %u bytes type %u payload from peer `%s'\n",
160 ntohs (message->type), GNUNET_i2s (peer));
162 GNUNET_STATISTICS_update (GST_stats,
164 ("# bytes payload discarded due to not connected peer"),
165 msg_size, GNUNET_NO);
169 GST_ats_add_address ((struct GNUNET_HELLO_Address *) address, session);
171 if (GNUNET_YES != do_forward)
173 im = (struct InboundMessage *) buf;
174 im->header.size = htons (size);
175 im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
177 memcpy (&im[1], message, ntohs (message->size));
179 GST_clients_broadcast (&im->header, GNUNET_YES);
186 * Function called by the transport for each received message.
187 * This function should also be called with "NULL" for the
188 * message to signal that the other peer disconnected.
190 * @param cls closure, const char* with the name of the plugin we received the message from
191 * @param peer (claimed) identity of the other peer
192 * @param message the message, NULL if we only care about
193 * learning about the delay until we should receive again -- FIXME!
194 * @param session identifier used for this session (NULL for plugins
195 * that do not offer bi-directional communication to the sender
196 * using the same "connection")
197 * @param sender_address binary address of the sender (if we established the
198 * connection or are otherwise sure of it; should be NULL
199 * for inbound TCP/UDP connections since it it not clear
200 * that we could establish ourselves a connection to that
201 * IP address and get the same system)
202 * @param sender_address_len number of bytes in sender_address
203 * @return how long the plugin should wait until receiving more data
204 * (plugins that do not support this, can ignore the return value)
206 struct GNUNET_TIME_Relative
207 GST_receive_callback (void *cls,
208 const struct GNUNET_PeerIdentity *peer,
209 const struct GNUNET_MessageHeader *message,
210 struct Session *session,
211 const char *sender_address,
212 uint16_t sender_address_len)
214 const char *plugin_name = cls;
215 struct GNUNET_TIME_Relative ret;
216 struct GNUNET_HELLO_Address address;
219 address.peer = *peer;
220 address.address = sender_address;
221 address.address_length = sender_address_len;
222 address.transport_name = plugin_name;
223 ret = GNUNET_TIME_UNIT_ZERO;
226 type = ntohs (message->type);
227 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
228 "Received Message with type %u from peer `%s'\n",
232 GNUNET_STATISTICS_update (GST_stats,
234 ("# bytes total received"),
235 ntohs (message->size), GNUNET_NO);
236 GST_neighbours_notify_data_recv (peer, &address, session, message);
240 case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
241 /* Legacy HELLO message, discard */
243 case GNUNET_MESSAGE_TYPE_HELLO:
244 GST_validation_handle_hello (message);
246 case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
247 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
248 "Processing `%s' from `%s'\n", "PING",
250 NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
251 GST_validation_handle_ping (peer, message, &address, session);
253 case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
254 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
255 "Processing `%s' from `%s'\n", "PONG",
257 NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
258 GST_validation_handle_pong (peer, message);
260 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
261 GST_neighbours_handle_connect (message, peer, &address, session);
263 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
264 GST_neighbours_handle_connect_ack (message, peer, &address, session);
266 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
267 GST_neighbours_handle_session_ack (message, peer, &address, session);
269 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
270 GST_neighbours_handle_disconnect_message (peer, message);
272 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
273 GST_neighbours_keepalive (peer);
275 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
276 GST_neighbours_keepalive_response (peer);
279 /* should be payload */
280 GNUNET_STATISTICS_update (GST_stats,
282 ("# bytes payload received"),
283 ntohs (message->size), GNUNET_NO);
284 GST_neighbours_notify_payload_recv (peer, &address, session, message);
285 ret = process_payload (peer, &address, session, message);
289 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
290 "Allowing receive from peer %s to continue in %s\n",
292 GNUNET_STRINGS_relative_time_to_string (ret, GNUNET_YES));
298 * Function that will be called for each address the transport
299 * is aware that it might be reachable under. Update our HELLO.
301 * @param cls name of the plugin (const char*)
302 * @param add_remove should the address added (YES) or removed (NO) from the
303 * set of valid addresses?
304 * @param addr one of the addresses of the host
305 * the specific address format depends on the transport
306 * @param addrlen length of the @a addr
307 * @param dest_plugin destination plugin to use this address with
310 plugin_env_address_change_notification (void *cls, int add_remove,
311 const void *addr, size_t addrlen,
312 const char *dest_plugin)
314 struct GNUNET_HELLO_Address address;
316 address.peer = GST_my_identity;
317 address.transport_name = dest_plugin;
318 address.address = addr;
319 address.address_length = addrlen;
320 GST_hello_modify_addresses (add_remove, &address);
325 * Function that will be called whenever the plugin internally
326 * cleans up a session pointer and hence the service needs to
327 * discard all of those sessions as well. Plugins that do not
328 * use sessions can simply omit calling this function and always
329 * use NULL wherever a session pointer is needed. This function
330 * should be called BEFORE a potential "TransmitContinuation"
331 * from the "TransmitFunction".
334 * @param peer which peer was the session for
335 * @param session which session is being destoyed
338 plugin_env_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
339 struct Session *session)
341 const char *transport_name = cls;
342 struct GNUNET_HELLO_Address address;
344 GNUNET_assert (strlen (transport_name) > 0);
345 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Session %p to peer `%s' ended \n",
346 session, GNUNET_i2s (peer));
348 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
350 "Telling ATS to destroy session %p from peer %s\n",
351 session, GNUNET_i2s (peer));
352 address.peer = *peer;
353 address.address = NULL;
354 address.address_length = 0;
355 address.transport_name = transport_name;
356 GST_neighbours_session_terminated (peer, session);
358 /* Tell ATS that session has ended */
359 GNUNET_ATS_address_destroyed (GST_ats, &address, session);
364 * Function that will be called to figure if an address is an loopback,
365 * LAN, WAN etc. address
368 * @param addr binary address
369 * @param addrlen length of the address
370 * @return ATS Information containing the network type
372 static struct GNUNET_ATS_Information
373 plugin_env_address_to_type (void *cls,
374 const struct sockaddr *addr,
377 struct GNUNET_ATS_Information ats;
378 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
379 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
385 if (((addr->sa_family != AF_INET) && (addrlen != sizeof (struct sockaddr_in))) &&
386 ((addr->sa_family != AF_INET6) && (addrlen != sizeof (struct sockaddr_in6))) &&
387 (addr->sa_family != AF_UNIX))
389 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Malformed address with length %u `%s'\n",
391 GNUNET_a2s(addr, addrlen));
395 return GNUNET_ATS_address_get_type(GST_ats, addr, addrlen);
400 * Notify ATS about the new address including the network this address is
403 * @param address the address
404 * @param session the session
407 GST_ats_add_address (const struct GNUNET_HELLO_Address *address,
408 struct Session *session)
410 struct GNUNET_TRANSPORT_PluginFunctions *papi;
411 struct GNUNET_ATS_Information ats;
414 /* valid new address, let ATS know! */
415 if (NULL == address->transport_name)
420 if (NULL == (papi = GST_plugins_find (address->transport_name)))
422 /* we don't have the plugin for this address */
427 if (GNUNET_YES == GNUNET_ATS_session_known (GST_ats, address, session))
430 net = papi->get_network (NULL, (void *) session);
431 if (GNUNET_ATS_NET_UNSPECIFIED == net)
433 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
434 _("Could not obtain a valid network for `%s' %s\n"),
435 GNUNET_i2s (&address->peer), GST_plugins_a2s (address));
438 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
439 ats.value = htonl(net);
440 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
441 "Notifying ATS about peer `%s''s new address `%s' session %p in network %s\n",
442 GNUNET_i2s (&address->peer),
443 (0 == address->address_length) ? "<inbound>" : GST_plugins_a2s (address),
445 GNUNET_ATS_print_network_type(net));
446 GNUNET_ATS_address_add (GST_ats,
447 address, session, &ats, 1);
452 * Notify ATS about property changes to an address
454 * @param peer the peer
455 * @param address the address
456 * @param session the session
457 * @param ats performance information
458 * @param ats_count number of elements in @a ats
461 GST_ats_update_metrics (const struct GNUNET_PeerIdentity *peer,
462 const struct GNUNET_HELLO_Address *address,
463 struct Session *session,
464 const struct GNUNET_ATS_Information *ats,
467 struct GNUNET_ATS_Information *ats_new;
469 if (GNUNET_NO == GNUNET_ATS_session_known (GST_ats, address, session))
472 /* Call to manipulation to manipulate ATS information */
473 ats_new = GST_manipulation_manipulate_metrics (peer, address, session, ats,
480 if (GNUNET_NO == GNUNET_ATS_address_update (GST_ats,
481 address, session, ats_new, ats_count))
483 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
484 _("Address or session unknown: failed to update properties for peer `%s' plugin `%s' address `%s' session %p\n"),
486 address->transport_name,
487 GST_plugins_a2s (address),
490 GNUNET_free (ats_new);
495 * Function that will be called to figure if an address is an loopback,
496 * LAN, WAN etc. address
499 * @param peer the peer
500 * @param address binary address
501 * @param address_len length of the @a address
502 * @param session the session
503 * @param ats the ats information to update
504 * @param ats_count the number of @a ats elements
507 plugin_env_update_metrics (void *cls,
508 const struct GNUNET_PeerIdentity *peer,
510 uint16_t address_len,
511 struct Session *session,
512 const struct GNUNET_ATS_Information *ats,
515 const char *plugin_name = cls;
516 struct GNUNET_HELLO_Address haddress;
518 if ((NULL == ats) || (0 == ats_count))
520 GNUNET_assert (NULL != GST_ats);
522 haddress.peer = *peer;
523 haddress.address = address;
524 haddress.address_length = address_len;
525 haddress.transport_name = plugin_name;
527 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
528 "Updating metrics for peer `%s' address %s session %p\n",
530 GST_plugins_a2s (&haddress),
532 GST_ats_update_metrics (peer, &haddress, session, ats, ats_count);
537 * Plugin tells transport service about a new (inbound) session
540 * @param peer the peer
541 * @param plugin plugin name
542 * @param address address
543 * @param address_len @a address length
544 * @param session the new session
545 * @param ats ats information
546 * @param ats_count number of @a ats information
549 plugin_env_session_start (void *cls,
550 const struct GNUNET_PeerIdentity *peer,
552 const void *address, uint16_t address_len,
553 struct Session *session,
554 const struct GNUNET_ATS_Information *ats,
557 struct GNUNET_HELLO_Address *addr;
575 addr = GNUNET_HELLO_address_allocate (peer, plugin, address, address_len);
576 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
577 "Notification from plugin `%s' about new session %p from peer `%s' address `%s'\n",
581 GST_plugins_a2s (addr));
582 GST_ats_add_address (addr, session);
585 GST_ats_update_metrics (peer, addr, session, ats, ats_count);
591 * Function called by ATS to notify the callee that the
592 * assigned bandwidth or address for a given peer was changed. If the
593 * callback is called with address/bandwidth assignments of zero, the
594 * ATS disconnect function will still be called once the disconnect
598 * @param address address to use (for peer given in address)
599 * @param session session to use (if available)
600 * @param bandwidth_out assigned outbound bandwidth for the connection in NBO,
601 * 0 to disconnect from peer
602 * @param bandwidth_in assigned inbound bandwidth for the connection in NBO,
603 * 0 to disconnect from peer
604 * @param ats ATS information
605 * @param ats_count number of @a ats elements
608 ats_request_address_change (void *cls,
609 const struct GNUNET_HELLO_Address *address,
610 struct Session *session,
611 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
612 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
613 const struct GNUNET_ATS_Information *ats,
616 uint32_t bw_in = ntohl (bandwidth_in.value__);
617 uint32_t bw_out = ntohl (bandwidth_out.value__);
619 /* ATS tells me to disconnect from peer */
620 if ((bw_in == 0) && (bw_out == 0))
622 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
623 "ATS tells me to disconnect from peer `%s'\n",
624 GNUNET_i2s (&address->peer));
625 GST_neighbours_force_disconnect (&address->peer);
628 GST_neighbours_switch_to_address (&address->peer, address, session, ats,
629 ats_count, bandwidth_in,
635 * Function called to notify transport users that another
636 * peer connected to us.
639 * @param peer the peer that connected
640 * @param bandwidth_in inbound bandwidth in NBO
641 * @param bandwidth_out outbound bandwidth in NBO
644 neighbours_connect_notification (void *cls,
645 const struct GNUNET_PeerIdentity *peer,
646 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
647 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
649 size_t len = sizeof (struct ConnectInfoMessage);
650 char buf[len] GNUNET_ALIGN;
651 struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
654 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
655 "We are now connected to peer `%s' and %u peers in total\n",
656 GNUNET_i2s (peer), connections);
658 connect_msg->header.size = htons (sizeof (buf));
659 connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
660 connect_msg->id = *peer;
661 connect_msg->quota_in = bandwidth_in;
662 connect_msg->quota_out = bandwidth_out;
663 GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
668 * Function called to notify transport users that another
669 * peer disconnected from us.
672 * @param peer the peer that disconnected
675 neighbours_disconnect_notification (void *cls,
676 const struct GNUNET_PeerIdentity *peer)
678 struct DisconnectInfoMessage disconnect_msg;
681 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
682 "Peer `%s' disconnected and we are connected to %u peers\n",
683 GNUNET_i2s (peer), connections);
685 GST_manipulation_peer_disconnect (peer);
686 disconnect_msg.header.size = htons (sizeof (struct DisconnectInfoMessage));
687 disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
688 disconnect_msg.reserved = htonl (0);
689 disconnect_msg.peer = *peer;
690 GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
695 * Function called to notify transport users that a neighbour peer changed its
699 * @param peer peer this update is about (never NULL)
700 * @param address address, NULL on disconnect
703 neighbours_address_notification (void *cls,
704 const struct GNUNET_PeerIdentity *peer,
705 const struct GNUNET_HELLO_Address *address)
707 GST_clients_broadcast_address_notification (peer, address);
712 * Function called when the service shuts down. Unloads our plugins
713 * and cancels pending validations.
715 * @param cls closure, unused
716 * @param tc task context (unused)
719 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
721 GST_neighbours_stop ();
722 GST_validation_stop ();
723 GST_plugins_unload ();
725 GNUNET_ATS_scheduling_done (GST_ats);
728 GST_blacklist_stop ();
730 GST_manipulation_stop ();
732 if (NULL != GST_peerinfo)
734 GNUNET_PEERINFO_disconnect (GST_peerinfo);
737 if (NULL != GST_stats)
739 GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
742 if (NULL != GST_my_private_key)
744 GNUNET_free (GST_my_private_key);
745 GST_my_private_key = NULL;
752 * Initiate transport service.
755 * @param server the initialized server
756 * @param c configuration to use
759 run (void *cls, struct GNUNET_SERVER_Handle *server,
760 const struct GNUNET_CONFIGURATION_Handle *c)
763 struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
764 long long unsigned int max_fd_cfg;
772 GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
775 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
776 _("Transport service is lacking key configuration settings. Exiting.\n"));
777 GNUNET_SCHEDULER_shutdown ();
781 GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION",
784 hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
787 pk = GNUNET_CRYPTO_eddsa_key_create_from_file (keyfile);
788 GNUNET_free (keyfile);
789 GNUNET_assert (NULL != pk);
790 GST_my_private_key = pk;
792 GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
793 GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
794 GNUNET_CRYPTO_eddsa_key_get_public (GST_my_private_key,
795 &GST_my_identity.public_key);
796 GNUNET_assert (NULL != GST_my_private_key);
798 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
799 "My identity is `%4s'\n", GNUNET_i2s (&GST_my_identity));
801 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
803 if (NULL == GST_peerinfo)
805 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
806 _("Could not access PEERINFO service. Exiting.\n"));
807 GNUNET_SCHEDULER_shutdown ();
814 struct rlimit r_file;
815 if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
817 max_fd_rlimit = r_file.rlim_cur;
818 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
819 "Maximum number of open files was: %u/%u\n",
823 max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
825 GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD", &max_fd_cfg);
827 if (max_fd_cfg > max_fd_rlimit)
830 max_fd = max_fd_rlimit;
831 if (max_fd < DEFAULT_MAX_FDS)
832 max_fd = DEFAULT_MAX_FDS;
834 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
835 "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
836 max_fd, (max_fd / 3) , (max_fd / 3) * 2);
838 friend_only = GNUNET_CONFIGURATION_get_value_yesno(GST_cfg, "topology","FRIENDS-ONLY");
839 if (GNUNET_SYSERR == friend_only)
840 friend_only = GNUNET_NO; /* According to topology defaults */
841 /* start subsystems */
842 GST_hello_start (friend_only, &process_hello_update, NULL);
843 GNUNET_assert (NULL != GST_hello_get());
844 GST_blacklist_start (GST_server, GST_cfg, &GST_my_identity);
846 GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change, NULL);
847 GST_manipulation_init (GST_cfg);
848 GST_plugins_load (&GST_manipulation_recv,
849 &plugin_env_address_change_notification,
850 &plugin_env_session_start,
851 &plugin_env_session_end,
852 &plugin_env_address_to_type,
853 &plugin_env_update_metrics);
854 GST_neighbours_start (NULL,
855 &neighbours_connect_notification,
856 &neighbours_disconnect_notification,
857 &neighbours_address_notification,
859 GST_clients_start (GST_server);
860 GST_validation_start ((max_fd / 3));
865 * The main function for the transport service.
867 * @param argc number of arguments from the command line
868 * @param argv command line arguments
869 * @return 0 ok, 1 on error
872 main (int argc, char *const *argv)
875 GNUNET_SERVICE_run (argc, argv, "transport",
876 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
879 /* end of file gnunet-service-transport.c */