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_EccPublicSignKey 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 do_forward = GNUNET_SYSERR;
157 ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
159 if (!GST_neighbours_test_connected (peer))
162 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
163 "Discarded %u bytes type %u payload from peer `%s'\n", msg_size,
164 ntohs (message->type), GNUNET_i2s (peer));
166 GNUNET_STATISTICS_update (GST_stats,
168 ("# bytes payload discarded due to not connected peer "),
169 msg_size, GNUNET_NO);
173 GST_ats_add_address ((struct GNUNET_HELLO_Address *) address, session);
175 if (do_forward != GNUNET_YES)
177 im = (struct InboundMessage *) buf;
178 im->header.size = htons (size);
179 im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
181 memcpy (&im[1], message, ntohs (message->size));
183 GST_clients_broadcast (&im->header, GNUNET_YES);
190 * Function called by the transport for each received message.
191 * This function should also be called with "NULL" for the
192 * message to signal that the other peer disconnected.
194 * @param cls closure, const char* with the name of the plugin we received the message from
195 * @param peer (claimed) identity of the other peer
196 * @param message the message, NULL if we only care about
197 * learning about the delay until we should receive again -- FIXME!
198 * @param session identifier used for this session (NULL for plugins
199 * that do not offer bi-directional communication to the sender
200 * using the same "connection")
201 * @param sender_address binary address of the sender (if we established the
202 * connection or are otherwise sure of it; should be NULL
203 * for inbound TCP/UDP connections since it it not clear
204 * that we could establish ourselves a connection to that
205 * IP address and get the same system)
206 * @param sender_address_len number of bytes in sender_address
207 * @return how long the plugin should wait until receiving more data
208 * (plugins that do not support this, can ignore the return value)
210 struct GNUNET_TIME_Relative
211 GST_receive_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
212 const struct GNUNET_MessageHeader *message,
213 struct Session *session,
214 const char *sender_address,
215 uint16_t sender_address_len)
217 const char *plugin_name = cls;
218 struct GNUNET_TIME_Relative ret;
219 struct GNUNET_HELLO_Address address;
222 address.peer = *peer;
223 address.address = sender_address;
224 address.address_length = sender_address_len;
225 address.transport_name = plugin_name;
226 ret = GNUNET_TIME_UNIT_ZERO;
229 type = ntohs (message->type);
230 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received Message with type %u from peer `%s'\n", type, GNUNET_i2s (peer));
232 GNUNET_STATISTICS_update (GST_stats,
234 ("# bytes total received"),
235 ntohs (message->size), GNUNET_NO);
239 case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
240 /* Legacy HELLO message, discard */
242 case GNUNET_MESSAGE_TYPE_HELLO:
243 GST_validation_handle_hello (message);
245 case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
246 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
247 "Processing `%s' from `%s'\n", "PING",
249 NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
250 GST_validation_handle_ping (peer, message, &address, session);
252 case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
253 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
254 "Processing `%s' from `%s'\n", "PONG",
256 NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
257 GST_validation_handle_pong (peer, message);
259 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
260 GST_neighbours_handle_connect (message, peer, &address, session);
262 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
263 GST_neighbours_handle_connect_ack (message, peer, &address, session);
265 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
266 GST_neighbours_handle_session_ack (message, peer, &address, session);
268 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
269 GST_neighbours_handle_disconnect_message (peer, message);
271 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
272 GST_neighbours_keepalive (peer);
274 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
275 GST_neighbours_keepalive_response (peer);
278 /* should be payload */
279 GNUNET_STATISTICS_update (GST_stats,
281 ("# bytes payload received"),
282 ntohs (message->size), GNUNET_NO);
283 ret = process_payload (peer, &address, session, message);
287 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
288 "Allowing receive from peer %s to continue in %s\n",
290 GNUNET_STRINGS_relative_time_to_string (ret, GNUNET_YES));
296 * Function that will be called for each address the transport
297 * is aware that it might be reachable under. Update our HELLO.
299 * @param cls name of the plugin (const char*)
300 * @param add_remove should the address added (YES) or removed (NO) from the
301 * set of valid addresses?
302 * @param addr one of the addresses of the host
303 * the specific address format depends on the transport
304 * @param addrlen length of the address
305 * @param dest_plugin destination plugin to use this address with
308 plugin_env_address_change_notification (void *cls, int add_remove,
309 const void *addr, size_t addrlen,
310 const char *dest_plugin)
312 struct GNUNET_HELLO_Address address;
314 address.peer = GST_my_identity;
315 address.transport_name = dest_plugin;
316 address.address = addr;
317 address.address_length = addrlen;
318 GST_hello_modify_addresses (add_remove, &address);
323 * Function that will be called whenever the plugin internally
324 * cleans up a session pointer and hence the service needs to
325 * discard all of those sessions as well. Plugins that do not
326 * use sessions can simply omit calling this function and always
327 * use NULL wherever a session pointer is needed. This function
328 * should be called BEFORE a potential "TransmitContinuation"
329 * from the "TransmitFunction".
332 * @param peer which peer was the session for
333 * @param session which session is being destoyed
336 plugin_env_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
337 struct Session *session)
339 const char *transport_name = cls;
340 struct GNUNET_HELLO_Address address;
342 GNUNET_assert (strlen (transport_name) > 0);
343 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Session %p to peer `%s' ended \n",
344 session, GNUNET_i2s (peer));
346 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
348 "Telling ATS to destroy session %p from peer %s\n",
349 session, GNUNET_i2s (peer));
350 address.peer = *peer;
351 address.address = NULL;
352 address.address_length = 0;
353 address.transport_name = transport_name;
354 GST_neighbours_session_terminated (peer, session);
356 /* Tell ATS that session has ended */
357 GNUNET_ATS_address_destroyed (GST_ats, &address, session);
362 * Function that will be called to figure if an address is an loopback,
363 * LAN, WAN etc. address
366 * @param addr binary address
367 * @param addrlen length of the address
368 * @return ATS Information containing the network type
370 static struct GNUNET_ATS_Information
371 plugin_env_address_to_type (void *cls,
372 const struct sockaddr *addr,
375 struct GNUNET_ATS_Information ats;
376 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
377 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
383 if (((addr->sa_family != AF_INET) && (addrlen != sizeof (struct sockaddr_in))) &&
384 ((addr->sa_family != AF_INET6) && (addrlen != sizeof (struct sockaddr_in6))) &&
385 (addr->sa_family != AF_UNIX))
387 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Malformed address with length %u `%s'\n",
389 GNUNET_a2s(addr, addrlen));
393 return GNUNET_ATS_address_get_type(GST_ats, addr, addrlen);
398 * Notify ATS about the new address including the network this address is
401 * @param address the address
402 * @param session the session
405 GST_ats_add_address (const struct GNUNET_HELLO_Address *address,
406 struct Session *session)
408 struct GNUNET_TRANSPORT_PluginFunctions *papi;
409 struct GNUNET_ATS_Information ats;
412 /* valid new address, let ATS know! */
413 if (NULL == address->transport_name)
418 if (NULL == (papi = GST_plugins_find (address->transport_name)))
420 /* we don't have the plugin for this address */
425 if (GNUNET_YES == GNUNET_ATS_session_known (GST_ats, address, session))
428 net = papi->get_network (NULL, (void *) session);
429 if (GNUNET_ATS_NET_UNSPECIFIED == net)
431 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
432 _("Could not obtain a valid network for `%s' %s\n"),
433 GNUNET_i2s (&address->peer), GST_plugins_a2s (address));
436 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
437 ats.value = htonl(net);
438 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
439 "Notifying ATS about peer `%s''s new address `%s' session %p in network %s\n",
440 GNUNET_i2s (&address->peer),
441 (0 == address->address_length) ? "<inbound>" : GST_plugins_a2s (address),
443 GNUNET_ATS_print_network_type(net));
444 GNUNET_ATS_address_add (GST_ats,
445 address, session, &ats, 1);
450 * Notify ATS about property changes to an address
452 * @param peer the peer
453 * @param address the address
454 * @param session the session
455 * @param ats performance information
456 * @param ats_count number of elements in ats
459 GST_ats_update_metrics (const struct GNUNET_PeerIdentity *peer,
460 const struct GNUNET_HELLO_Address *address,
461 struct Session *session,
462 const struct GNUNET_ATS_Information *ats,
465 struct GNUNET_ATS_Information *ats_new;
467 if (GNUNET_NO == GNUNET_ATS_session_known (GST_ats, address, session))
470 /* Call to manipulation to manipulate ATS information */
471 ats_new = GST_manipulation_manipulate_metrics (peer, address, session, ats, ats_count);
477 if (GNUNET_NO == GNUNET_ATS_address_update (GST_ats, address, session, ats_new, ats_count))
479 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
480 _("Address or session unknown: failed to update properties for peer `%s' plugin `%s' address `%s' session %p\n"),
481 GNUNET_i2s (peer), address->transport_name, GST_plugins_a2s (address), session);
483 GNUNET_free (ats_new);
488 * Function that will be called to figure if an address is an loopback,
489 * LAN, WAN etc. address
492 * @param peer the peer
493 * @param address binary address
494 * @param address_len length of the address
495 * @param session the session
496 * @param ats the ats information to update
497 * @param ats_count the number of ats elements
500 plugin_env_update_metrics (void *cls,
501 const struct GNUNET_PeerIdentity *peer,
503 uint16_t address_len,
504 struct Session *session,
505 const struct GNUNET_ATS_Information *ats,
508 struct GNUNET_HELLO_Address haddress;
509 const char *plugin_name = cls;
511 if ((NULL == ats) || (0 == ats_count))
513 GNUNET_assert (NULL != GST_ats);
516 haddress.peer = *peer;
517 haddress.address = address;
518 haddress.address_length = address_len;
519 haddress.transport_name = plugin_name;
521 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Updating metrics for peer `%s' address %s session %p\n",
522 GNUNET_i2s (peer), GST_plugins_a2s(&haddress), session);
523 GST_ats_update_metrics (peer, &haddress, session, ats, ats_count);
527 * Plugin tells transport service about a new (inbound) session
530 * @param peer the peer
531 * @param plugin plugin name
532 * @param address address
533 * @param address_len address length
534 * @param session the new session
535 * @param ats ats information
536 * @param ats_count number of ats information
540 plugin_env_session_start (void *cls,
541 const struct GNUNET_PeerIdentity *peer,
544 uint16_t address_len,
545 struct Session *session,
546 const struct GNUNET_ATS_Information *ats,
549 struct GNUNET_HELLO_Address *addr;
560 if ((address_len != 0) && (NULL == address))
571 addr = GNUNET_HELLO_address_allocate (peer, plugin, address, address_len);
572 if (0 != address_len)
574 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
575 "Inbound session from plugin `%s' about new session %p from peer `%s' address `%s' does not have address length 0 but %u\n",
576 plugin, session, GNUNET_i2s (peer), GST_plugins_a2s(addr), address_len);
578 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
579 "Notification from plugin `%s' about new session %p from peer `%s' address `%s'\n",
580 plugin, session, GNUNET_i2s (peer), GST_plugins_a2s(addr));
581 GST_ats_add_address (addr, session);
584 GST_ats_update_metrics (peer, addr, session, ats, ats_count);
589 * Function called by ATS to notify the callee that the
590 * assigned bandwidth or address for a given peer was changed. If the
591 * callback is called with address/bandwidth assignments of zero, the
592 * ATS disconnect function will still be called once the disconnect
596 * @param address address to use (for peer given in address)
597 * @param session session to use (if available)
598 * @param bandwidth_out assigned outbound bandwidth for the connection in NBO,
599 * 0 to disconnect from peer
600 * @param bandwidth_in assigned inbound bandwidth for the connection in NBO,
601 * 0 to disconnect from peer
602 * @param ats ATS information
603 * @param ats_count number of ATS elements
606 ats_request_address_change (void *cls,
607 const struct GNUNET_HELLO_Address *address,
608 struct Session *session,
609 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
610 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
611 const struct GNUNET_ATS_Information *ats,
614 uint32_t bw_in = ntohl (bandwidth_in.value__);
615 uint32_t bw_out = ntohl (bandwidth_out.value__);
617 /* ATS tells me to disconnect from peer */
618 if ((bw_in == 0) && (bw_out == 0))
620 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
621 "ATS tells me to disconnect from peer `%s'\n",
622 GNUNET_i2s (&address->peer));
623 GST_neighbours_force_disconnect (&address->peer);
626 GST_neighbours_switch_to_address (&address->peer, address, session, ats,
627 ats_count, bandwidth_in,
633 * Function called to notify transport users that another
634 * peer connected to us.
637 * @param peer the peer that connected
638 * @param bandwidth_in inbound bandwidth in NBO
639 * @param bandwidth_out outbound bandwidth in NBO
642 neighbours_connect_notification (void *cls,
643 const struct GNUNET_PeerIdentity *peer,
644 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
645 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
647 size_t len = sizeof (struct ConnectInfoMessage);
648 char buf[len] GNUNET_ALIGN;
649 struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
652 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
653 "We are now connected to peer `%s' and %u peers in total\n",
654 GNUNET_i2s (peer), connections);
656 connect_msg->header.size = htons (sizeof (buf));
657 connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
658 connect_msg->id = *peer;
659 connect_msg->quota_in = bandwidth_in;
660 connect_msg->quota_out = bandwidth_out;
661 GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
666 * Function called to notify transport users that another
667 * peer disconnected from us.
670 * @param peer the peer that disconnected
673 neighbours_disconnect_notification (void *cls,
674 const struct GNUNET_PeerIdentity *peer)
676 struct DisconnectInfoMessage disconnect_msg;
679 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
680 "Peer `%s' disconnected and we are connected to %u peers\n",
681 GNUNET_i2s (peer), connections);
683 GST_manipulation_peer_disconnect (peer);
684 disconnect_msg.header.size = htons (sizeof (struct DisconnectInfoMessage));
685 disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
686 disconnect_msg.reserved = htonl (0);
687 disconnect_msg.peer = *peer;
688 GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
693 * Function called to notify transport users that a neighbour peer changed its
697 * @param peer peer this update is about (never NULL)
698 * @param address address, NULL on disconnect
701 neighbours_address_notification (void *cls,
702 const struct GNUNET_PeerIdentity *peer,
703 const struct GNUNET_HELLO_Address *address)
705 GST_clients_broadcast_address_notification (peer, address);
710 * Function called when the service shuts down. Unloads our plugins
711 * and cancels pending validations.
713 * @param cls closure, unused
714 * @param tc task context (unused)
717 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
719 GST_neighbours_stop ();
720 GST_validation_stop ();
721 GST_plugins_unload ();
723 GNUNET_ATS_scheduling_done (GST_ats);
726 GST_blacklist_stop ();
728 GST_manipulation_stop ();
730 if (NULL != GST_peerinfo)
732 GNUNET_PEERINFO_disconnect (GST_peerinfo);
735 if (NULL != GST_stats)
737 GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
740 if (NULL != GST_my_private_key)
742 GNUNET_free (GST_my_private_key);
743 GST_my_private_key = NULL;
750 * Initiate transport service.
753 * @param server the initialized server
754 * @param c configuration to use
757 run (void *cls, struct GNUNET_SERVER_Handle *server,
758 const struct GNUNET_CONFIGURATION_Handle *c)
761 struct GNUNET_CRYPTO_EccPrivateKey *pk;
762 long long unsigned int max_fd_cfg;
770 GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
773 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
775 ("Transport service is lacking key configuration settings. Exiting.\n"));
776 GNUNET_SCHEDULER_shutdown ();
780 GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION",
783 hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
786 pk = GNUNET_CRYPTO_ecc_key_create_from_file (keyfile);
787 GNUNET_free (keyfile);
788 GNUNET_assert (NULL != pk);
789 GST_my_private_key = pk;
791 GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
792 GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
793 GNUNET_CRYPTO_ecc_key_get_public_for_signature (GST_my_private_key, &GST_my_public_key);
794 GNUNET_CRYPTO_hash (&GST_my_public_key, sizeof (GST_my_public_key),
795 &GST_my_identity.hashPubKey);
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", r_file.rlim_cur,
822 max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
824 GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD", &max_fd_cfg);
826 if (max_fd_cfg > max_fd_rlimit)
829 max_fd = max_fd_rlimit;
830 if (max_fd < DEFAULT_MAX_FDS)
831 max_fd = DEFAULT_MAX_FDS;
833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
834 "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
835 max_fd, (max_fd / 3) , (max_fd / 3) * 2);
837 friend_only = GNUNET_CONFIGURATION_get_value_yesno(GST_cfg, "topology","FRIENDS-ONLY");
838 if (GNUNET_SYSERR == friend_only)
839 friend_only = GNUNET_NO; /* According to topology defaults */
840 /* start subsystems */
841 GST_hello_start (friend_only, &process_hello_update, NULL);
842 GNUNET_assert (NULL != GST_hello_get());
843 GST_blacklist_start (GST_server, GST_cfg, &GST_my_identity);
845 GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change, NULL);
846 GST_manipulation_init (GST_cfg);
847 GST_plugins_load (&GST_manipulation_recv,
848 &plugin_env_address_change_notification,
849 &plugin_env_session_start,
850 &plugin_env_session_end,
851 &plugin_env_address_to_type,
852 &plugin_env_update_metrics);
853 GST_neighbours_start (NULL,
854 &neighbours_connect_notification,
855 &neighbours_disconnect_notification,
856 &neighbours_address_notification,
858 GST_clients_start (GST_server);
859 GST_validation_start ((max_fd / 3));
864 * The main function for the transport service.
866 * @param argc number of arguments from the command line
867 * @param argv command line arguments
868 * @return 0 ok, 1 on error
871 main (int argc, char *const *argv)
874 GNUNET_SERVICE_run (argc, argv, "transport",
875 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
878 /* end of file gnunet-service-transport.c */