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"
45 * Information we need for an asynchronous session kill.
52 struct SessionKiller *next;
57 struct SessionKiller *prev;
62 struct Session *session;
65 * Plugin for the session.
67 struct GNUNET_TRANSPORT_PluginFunctions *plugin;
72 GNUNET_SCHEDULER_TaskIdentifier task;
81 struct GNUNET_STATISTICS_Handle *GST_stats;
84 * Configuration handle.
86 const struct GNUNET_CONFIGURATION_Handle *GST_cfg;
89 * Configuration handle.
91 struct GNUNET_PeerIdentity GST_my_identity;
94 * Handle to peerinfo service.
96 struct GNUNET_PEERINFO_Handle *GST_peerinfo;
99 * Handle to our service's server.
101 static struct GNUNET_SERVER_Handle *GST_server;
106 struct GNUNET_CRYPTO_EddsaPrivateKey *GST_my_private_key;
111 struct GNUNET_ATS_SchedulingHandle *GST_ats;
114 * Hello address expiration
116 struct GNUNET_TIME_Relative hello_expiration;
119 * DEBUGGING connection counter
121 static int connections;
124 * Head of DLL of asynchronous tasks to kill sessions.
126 static struct SessionKiller *sk_head;
129 * Tail of DLL of asynchronous tasks to kill sessions.
131 static struct SessionKiller *sk_tail;
135 * Transmit our HELLO message to the given (connected) neighbour.
137 * @param cls the 'HELLO' message
138 * @param target a connected neighbour
139 * @param address the address
140 * @param bandwidth_in inbound quota in NBO
141 * @param bandwidth_out outbound quota in NBO
144 transmit_our_hello (void *cls, const struct GNUNET_PeerIdentity *target,
145 const struct GNUNET_HELLO_Address *address,
146 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
147 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
149 const struct GNUNET_MessageHeader *hello = cls;
151 GST_neighbours_send (target,
154 hello_expiration, NULL, NULL);
159 * My HELLO has changed. Tell everyone who should know.
162 * @param hello new HELLO
165 process_hello_update (void *cls,
166 const struct GNUNET_MessageHeader *hello)
168 GST_clients_broadcast (hello, GNUNET_NO);
169 GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
174 * We received some payload. Prepare to pass it on to our clients.
176 * @param peer (claimed) identity of the other peer
177 * @param address the address
178 * @param session session used
179 * @param message the message to process
180 * @return how long the plugin should wait until receiving more data
182 static struct GNUNET_TIME_Relative
183 process_payload (const struct GNUNET_PeerIdentity *peer,
184 const struct GNUNET_HELLO_Address *address,
185 struct Session *session,
186 const struct GNUNET_MessageHeader *message)
188 struct GNUNET_TIME_Relative ret;
190 struct InboundMessage *im;
191 size_t msg_size = ntohs (message->size);
193 sizeof (struct InboundMessage) + msg_size;
194 char buf[size] GNUNET_ALIGN;
196 do_forward = GNUNET_SYSERR;
197 ret = GST_neighbours_calculate_receive_delay (peer, msg_size, &do_forward);
198 if (! GST_neighbours_test_connected (peer))
200 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
201 "Discarded %u bytes type %u payload from peer `%s'\n",
203 ntohs (message->type), GNUNET_i2s (peer));
204 GNUNET_STATISTICS_update (GST_stats,
206 ("# bytes payload discarded due to not connected peer"),
207 msg_size, GNUNET_NO);
211 GST_ats_add_address (address, session, NULL, 0);
213 if (GNUNET_YES != do_forward)
215 im = (struct InboundMessage *) buf;
216 im->header.size = htons (size);
217 im->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_RECV);
219 memcpy (&im[1], message, ntohs (message->size));
220 GST_clients_broadcast (&im->header, GNUNET_YES);
226 * Task to asynchronously terminate a session.
228 * @param cls the `struct SessionKiller` with the information for the kill
229 * @param tc scheduler context
232 kill_session_task (void *cls,
233 const struct GNUNET_SCHEDULER_TaskContext *tc)
235 struct SessionKiller *sk = cls;
237 sk->task = GNUNET_SCHEDULER_NO_TASK;
238 GNUNET_CONTAINER_DLL_remove (sk_head, sk_tail, sk);
239 sk->plugin->disconnect_session (sk->plugin->cls,
246 * Force plugin to terminate session due to communication
249 * @param plugin_name name of the plugin
250 * @param session session to termiante
253 kill_session (const char *plugin_name,
254 struct Session *session)
256 struct GNUNET_TRANSPORT_PluginFunctions *plugin;
257 struct SessionKiller *sk;
259 for (sk = sk_head; NULL != sk; sk = sk->next)
260 if (sk->session == session)
262 plugin = GST_plugins_find (plugin_name);
268 /* need to issue disconnect asynchronously */
269 sk = GNUNET_new (struct SessionKiller);
270 sk->session = session;
272 sk->task = GNUNET_SCHEDULER_add_now (&kill_session_task,
274 GNUNET_CONTAINER_DLL_insert (sk_head, sk_tail, sk);
279 * Function called by the transport for each received message.
281 * @param cls closure, const char* with the name of the plugin we received the message from
282 * @param peer (claimed) identity of the other peer
283 * @param message the message, NULL if we only care about
284 * learning about the delay until we should receive again
285 * @param session identifier used for this session (NULL for plugins
286 * that do not offer bi-directional communication to the sender
287 * using the same "connection")
288 * @param sender_address binary address of the sender (if we established the
289 * connection or are otherwise sure of it; should be NULL
290 * for inbound TCP/UDP connections since it it not clear
291 * that we could establish ourselves a connection to that
292 * IP address and get the same system)
293 * @param sender_address_len number of bytes in @a sender_address
294 * @return how long the plugin should wait until receiving more data
295 * (plugins that do not support this, can ignore the return value)
297 struct GNUNET_TIME_Relative
298 GST_receive_callback (void *cls,
299 const struct GNUNET_PeerIdentity *peer,
300 const struct GNUNET_MessageHeader *message,
301 struct Session *session,
302 const char *sender_address,
303 uint16_t sender_address_len)
305 const char *plugin_name = cls;
306 struct GNUNET_TIME_Relative ret;
307 struct GNUNET_HELLO_Address address;
310 address.peer = *peer;
311 address.address = sender_address;
312 address.address_length = sender_address_len;
313 address.transport_name = plugin_name;
314 ret = GNUNET_TIME_UNIT_ZERO;
317 type = ntohs (message->type);
318 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
319 "Received Message with type %u from peer `%s'\n",
323 GNUNET_STATISTICS_update (GST_stats,
325 ("# bytes total received"),
326 ntohs (message->size), GNUNET_NO);
327 GST_neighbours_notify_data_recv (peer, &address, session, message);
331 case GNUNET_MESSAGE_TYPE_HELLO_LEGACY:
332 /* Legacy HELLO message, discard */
334 case GNUNET_MESSAGE_TYPE_HELLO:
336 GST_validation_handle_hello (message))
339 kill_session (plugin_name, session);
342 case GNUNET_MESSAGE_TYPE_TRANSPORT_PING:
343 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
344 "Processing `%s' from `%s'\n", "PING",
346 NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
348 GST_validation_handle_ping (peer, message, &address, session))
349 kill_session (plugin_name, session);
351 case GNUNET_MESSAGE_TYPE_TRANSPORT_PONG:
352 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
353 "Processing `%s' from `%s'\n", "PONG",
355 NULL) ? GST_plugins_a2s (&address) : TRANSPORT_SESSION_INBOUND_STRING);
357 GST_validation_handle_pong (peer, message))
360 kill_session (plugin_name, session);
363 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT:
365 GST_neighbours_handle_connect (message, peer, &address, session))
368 kill_session (plugin_name, session);
371 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_CONNECT_ACK:
373 GST_neighbours_handle_connect_ack (message, peer, &address, session))
375 kill_session (plugin_name, session);
378 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK:
380 GST_neighbours_handle_session_ack (message, peer, &address, session))
383 kill_session (plugin_name, session);
386 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT:
387 GST_neighbours_handle_disconnect_message (peer, message);
389 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE:
390 GST_neighbours_keepalive (peer, message);
392 case GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE:
393 GST_neighbours_keepalive_response (peer, message);
396 /* should be payload */
397 GNUNET_STATISTICS_update (GST_stats,
399 ("# bytes payload received"),
400 ntohs (message->size), GNUNET_NO);
401 GST_neighbours_notify_payload_recv (peer, &address, session, message);
402 ret = process_payload (peer, &address, session, message);
406 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
407 "Allowing receive from peer %s to continue in %s\n",
409 GNUNET_STRINGS_relative_time_to_string (ret, GNUNET_YES));
415 * Function that will be called for each address the transport
416 * is aware that it might be reachable under. Update our HELLO.
418 * @param cls name of the plugin (const char*)
419 * @param add_remove should the address added (YES) or removed (NO) from the
420 * set of valid addresses?
421 * @param addr one of the addresses of the host
422 * the specific address format depends on the transport
423 * @param addrlen length of the @a addr
424 * @param dest_plugin destination plugin to use this address with
427 plugin_env_address_change_notification (void *cls, int add_remove,
428 const void *addr, size_t addrlen,
429 const char *dest_plugin)
431 struct GNUNET_HELLO_Address address;
433 address.peer = GST_my_identity;
434 address.transport_name = dest_plugin;
435 address.address = addr;
436 address.address_length = addrlen;
437 GST_hello_modify_addresses (add_remove, &address);
442 * Function that will be called whenever the plugin internally
443 * cleans up a session pointer and hence the service needs to
444 * discard all of those sessions as well. Plugins that do not
445 * use sessions can simply omit calling this function and always
446 * use NULL wherever a session pointer is needed. This function
447 * should be called BEFORE a potential "TransmitContinuation"
448 * from the "TransmitFunction".
451 * @param peer which peer was the session for
452 * @param session which session is being destoyed
455 plugin_env_session_end (void *cls, const struct GNUNET_PeerIdentity *peer,
456 struct Session *session)
458 const char *transport_name = cls;
459 struct GNUNET_HELLO_Address address;
460 struct SessionKiller *sk;
462 GNUNET_assert (strlen (transport_name) > 0);
463 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
464 "Session %p to peer `%s' ended \n",
468 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG | GNUNET_ERROR_TYPE_BULK,
470 "Telling ATS to destroy session %p from peer %s\n",
471 session, GNUNET_i2s (peer));
472 address.peer = *peer;
473 address.address = NULL;
474 address.address_length = 0;
475 address.transport_name = transport_name;
476 GST_neighbours_session_terminated (peer, session);
478 /* Tell ATS that session has ended */
479 GNUNET_ATS_address_destroyed (GST_ats, &address, session);
480 for (sk = sk_head; NULL != sk; sk = sk->next)
482 if (sk->session == session)
484 GNUNET_CONTAINER_DLL_remove (sk_head, sk_tail, sk);
485 GNUNET_SCHEDULER_cancel (sk->task);
494 * Function that will be called to figure if an address is an loopback,
495 * LAN, WAN etc. address
498 * @param addr binary address
499 * @param addrlen length of the address
500 * @return ATS Information containing the network type
502 static struct GNUNET_ATS_Information
503 plugin_env_address_to_type (void *cls,
504 const struct sockaddr *addr,
507 struct GNUNET_ATS_Information ats;
509 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
510 ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED);
516 if (((addr->sa_family != AF_INET) && (addrlen != sizeof (struct sockaddr_in))) &&
517 ((addr->sa_family != AF_INET6) && (addrlen != sizeof (struct sockaddr_in6))) &&
518 (addr->sa_family != AF_UNIX))
520 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
521 "Malformed address with length %u `%s'\n",
523 GNUNET_a2s (addr, addrlen));
527 return GNUNET_ATS_address_get_type (GST_ats, addr, addrlen);
532 * Notify ATS about the new address including the network this address is
535 * @param address the address
536 * @param session the session
537 * @param ats ats information
538 * @param ats_count number of @a ats information
541 GST_ats_add_address (const struct GNUNET_HELLO_Address *address,
542 struct Session *session,
543 const struct GNUNET_ATS_Information *ats,
546 struct GNUNET_TRANSPORT_PluginFunctions *papi;
547 struct GNUNET_ATS_Information ats2[ats_count + 1];
550 /* valid new address, let ATS know! */
551 if (NULL == address->transport_name)
556 if (NULL == (papi = GST_plugins_find (address->transport_name)))
558 /* we don't have the plugin for this address */
563 if (GNUNET_YES == GNUNET_ATS_session_known (GST_ats, address, session))
565 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
566 "ATS already knows the address, not passing it on again\n");
570 net = papi->get_network (NULL, session);
571 if (GNUNET_ATS_NET_UNSPECIFIED == net)
573 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
574 _("Could not obtain a valid network for `%s' %s (%s)\n"),
575 GNUNET_i2s (&address->peer),
576 GST_plugins_a2s (address),
577 address->transport_name);
580 ats2[0].type = htonl (GNUNET_ATS_NETWORK_TYPE);
581 ats2[0].value = htonl(net);
582 memcpy (&ats2[1], ats, sizeof (struct GNUNET_ATS_Information) * ats_count);
583 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
584 "Notifying ATS about peer `%s''s new address `%s' session %p in network %s\n",
585 GNUNET_i2s (&address->peer),
586 (0 == address->address_length) ? "<inbound>" : GST_plugins_a2s (address),
588 GNUNET_ATS_print_network_type(net));
589 GNUNET_ATS_address_add (GST_ats,
591 ats2, ats_count + 1);
596 * Notify ATS about property changes to an address
598 * @param peer the peer
599 * @param address the address
600 * @param session the session
601 * @param ats performance information
602 * @param ats_count number of elements in @a ats
605 GST_ats_update_metrics (const struct GNUNET_PeerIdentity *peer,
606 const struct GNUNET_HELLO_Address *address,
607 struct Session *session,
608 const struct GNUNET_ATS_Information *ats,
611 struct GNUNET_ATS_Information *ats_new;
613 if (GNUNET_NO == GNUNET_ATS_session_known (GST_ats, address, session))
616 /* Call to manipulation to manipulate ATS information */
617 ats_new = GST_manipulation_manipulate_metrics (peer, address, session, ats,
624 if (GNUNET_NO == GNUNET_ATS_address_update (GST_ats,
625 address, session, ats_new, ats_count))
627 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
628 _("Address or session unknown: failed to update properties for peer `%s' plugin `%s' address `%s' session %p\n"),
630 address->transport_name,
631 GST_plugins_a2s (address),
634 GNUNET_free (ats_new);
639 * Function that will be called to figure if an address is an loopback,
640 * LAN, WAN etc. address
643 * @param peer the peer
644 * @param address binary address
645 * @param address_len length of the @a address
646 * @param session the session
647 * @param ats the ats information to update
648 * @param ats_count the number of @a ats elements
651 plugin_env_update_metrics (void *cls,
652 const struct GNUNET_PeerIdentity *peer,
654 uint16_t address_len,
655 struct Session *session,
656 const struct GNUNET_ATS_Information *ats,
659 const char *plugin_name = cls;
660 struct GNUNET_HELLO_Address haddress;
662 if ((NULL == ats) || (0 == ats_count))
664 GNUNET_assert (NULL != GST_ats);
666 haddress.peer = *peer;
667 haddress.address = address;
668 haddress.address_length = address_len;
669 haddress.transport_name = plugin_name;
671 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
672 "Updating metrics for peer `%s' address %s session %p\n",
674 GST_plugins_a2s (&haddress),
676 GST_ats_update_metrics (peer, &haddress, session, ats, ats_count);
681 * Plugin tells transport service about a new (inbound) session
684 * @param peer the peer
685 * @param plugin plugin name
686 * @param address address
687 * @param address_len @a address length
688 * @param session the new session
689 * @param ats ats information
690 * @param ats_count number of @a ats information
693 plugin_env_session_start (void *cls,
694 const struct GNUNET_PeerIdentity *peer,
696 const void *address, uint16_t address_len,
697 struct Session *session,
698 const struct GNUNET_ATS_Information *ats,
701 struct GNUNET_HELLO_Address *addr;
719 addr = GNUNET_HELLO_address_allocate (peer, plugin, address, address_len);
720 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
721 "Notification from plugin `%s' about new session %p from peer `%s' address `%s'\n",
725 GST_plugins_a2s (addr));
726 GST_ats_add_address (addr, session, ats, ats_count);
732 * Function called by ATS to notify the callee that the
733 * assigned bandwidth or address for a given peer was changed. If the
734 * callback is called with address/bandwidth assignments of zero, the
735 * ATS disconnect function will still be called once the disconnect
739 * @param address address to use (for peer given in address)
740 * @param session session to use (if available)
741 * @param bandwidth_out assigned outbound bandwidth for the connection in NBO,
742 * 0 to disconnect from peer
743 * @param bandwidth_in assigned inbound bandwidth for the connection in NBO,
744 * 0 to disconnect from peer
745 * @param ats ATS information
746 * @param ats_count number of @a ats elements
749 ats_request_address_change (void *cls,
750 const struct GNUNET_HELLO_Address *address,
751 struct Session *session,
752 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
753 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
754 const struct GNUNET_ATS_Information *ats,
757 uint32_t bw_in = ntohl (bandwidth_in.value__);
758 uint32_t bw_out = ntohl (bandwidth_out.value__);
760 /* ATS tells me to disconnect from peer */
761 if ((0 == bw_in) && (0 == bw_out))
763 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
764 "ATS tells me to disconnect from peer `%s'\n",
765 GNUNET_i2s (&address->peer));
766 GST_neighbours_force_disconnect (&address->peer);
769 GST_neighbours_switch_to_address (&address->peer, address, session, ats,
770 ats_count, bandwidth_in,
776 * Function called to notify transport users that another
777 * peer connected to us.
780 * @param peer the peer that connected
781 * @param bandwidth_in inbound bandwidth in NBO
782 * @param bandwidth_out outbound bandwidth in NBO
785 neighbours_connect_notification (void *cls,
786 const struct GNUNET_PeerIdentity *peer,
787 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
788 struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
790 size_t len = sizeof (struct ConnectInfoMessage);
791 char buf[len] GNUNET_ALIGN;
792 struct ConnectInfoMessage *connect_msg = (struct ConnectInfoMessage *) buf;
795 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
796 "We are now connected to peer `%s' and %u peers in total\n",
797 GNUNET_i2s (peer), connections);
798 connect_msg->header.size = htons (sizeof (buf));
799 connect_msg->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT);
800 connect_msg->id = *peer;
801 connect_msg->quota_in = bandwidth_in;
802 connect_msg->quota_out = bandwidth_out;
803 GST_clients_broadcast (&connect_msg->header, GNUNET_NO);
808 * Function called to notify transport users that another
809 * peer disconnected from us.
812 * @param peer the peer that disconnected
815 neighbours_disconnect_notification (void *cls,
816 const struct GNUNET_PeerIdentity *peer)
818 struct DisconnectInfoMessage disconnect_msg;
821 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
822 "Peer `%s' disconnected and we are connected to %u peers\n",
823 GNUNET_i2s (peer), connections);
825 GST_manipulation_peer_disconnect (peer);
826 disconnect_msg.header.size = htons (sizeof (struct DisconnectInfoMessage));
827 disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
828 disconnect_msg.reserved = htonl (0);
829 disconnect_msg.peer = *peer;
830 GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
835 * Function called to notify transport users that a neighbour peer changed its
839 * @param peer peer this update is about (never NULL)
840 * @param address address, NULL on disconnect
843 neighbours_address_notification (void *cls,
844 const struct GNUNET_PeerIdentity *peer,
845 const struct GNUNET_HELLO_Address *address)
847 GST_clients_broadcast_address_notification (peer, address);
852 * Function called when the service shuts down. Unloads our plugins
853 * and cancels pending validations.
855 * @param cls closure, unused
856 * @param tc task context (unused)
859 shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
861 GST_neighbours_stop ();
862 GST_validation_stop ();
863 GST_plugins_unload ();
865 GNUNET_ATS_scheduling_done (GST_ats);
868 GST_blacklist_stop ();
870 GST_manipulation_stop ();
872 if (NULL != GST_peerinfo)
874 GNUNET_PEERINFO_disconnect (GST_peerinfo);
877 if (NULL != GST_stats)
879 GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
882 if (NULL != GST_my_private_key)
884 GNUNET_free (GST_my_private_key);
885 GST_my_private_key = NULL;
892 * Initiate transport service.
895 * @param server the initialized server
896 * @param c configuration to use
899 run (void *cls, struct GNUNET_SERVER_Handle *server,
900 const struct GNUNET_CONFIGURATION_Handle *c)
903 struct GNUNET_CRYPTO_EddsaPrivateKey *pk;
904 long long unsigned int max_fd_cfg;
912 GNUNET_CONFIGURATION_get_value_filename (c, "PEER", "PRIVATE_KEY",
915 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
916 _("Transport service is lacking key configuration settings. Exiting.\n"));
917 GNUNET_SCHEDULER_shutdown ();
921 GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION",
924 hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION;
927 pk = GNUNET_CRYPTO_eddsa_key_create_from_file (keyfile);
928 GNUNET_free (keyfile);
929 GNUNET_assert (NULL != pk);
930 GST_my_private_key = pk;
932 GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
933 GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
934 GNUNET_CRYPTO_eddsa_key_get_public (GST_my_private_key,
935 &GST_my_identity.public_key);
936 GNUNET_assert (NULL != GST_my_private_key);
938 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
939 "My identity is `%4s'\n", GNUNET_i2s (&GST_my_identity));
941 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
943 if (NULL == GST_peerinfo)
945 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
946 _("Could not access PEERINFO service. Exiting.\n"));
947 GNUNET_SCHEDULER_shutdown ();
954 struct rlimit r_file;
955 if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
957 max_fd_rlimit = r_file.rlim_cur;
958 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
959 "Maximum number of open files was: %u/%u\n",
963 max_fd_rlimit = (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
965 GNUNET_CONFIGURATION_get_value_number (GST_cfg, "transport", "MAX_FD", &max_fd_cfg);
967 if (max_fd_cfg > max_fd_rlimit)
970 max_fd = max_fd_rlimit;
971 if (max_fd < DEFAULT_MAX_FDS)
972 max_fd = DEFAULT_MAX_FDS;
974 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
975 "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
976 max_fd, (max_fd / 3) , (max_fd / 3) * 2);
978 friend_only = GNUNET_CONFIGURATION_get_value_yesno(GST_cfg, "topology","FRIENDS-ONLY");
979 if (GNUNET_SYSERR == friend_only)
980 friend_only = GNUNET_NO; /* According to topology defaults */
981 /* start subsystems */
982 GST_hello_start (friend_only, &process_hello_update, NULL);
983 GNUNET_assert (NULL != GST_hello_get());
984 GST_blacklist_start (GST_server, GST_cfg, &GST_my_identity);
986 GNUNET_ATS_scheduling_init (GST_cfg, &ats_request_address_change, NULL);
987 GST_manipulation_init (GST_cfg);
988 GST_plugins_load (&GST_manipulation_recv,
989 &plugin_env_address_change_notification,
990 &plugin_env_session_start,
991 &plugin_env_session_end,
992 &plugin_env_address_to_type,
993 &plugin_env_update_metrics);
994 GST_neighbours_start (NULL,
995 &neighbours_connect_notification,
996 &neighbours_disconnect_notification,
997 &neighbours_address_notification,
999 GST_clients_start (GST_server);
1000 GST_validation_start ((max_fd / 3));
1005 * The main function for the transport service.
1007 * @param argc number of arguments from the command line
1008 * @param argv command line arguments
1009 * @return 0 ok, 1 on error
1012 main (int argc, char *const *argv)
1014 return (GNUNET_OK ==
1015 GNUNET_SERVICE_run (argc, argv, "transport",
1016 GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
1019 /* end of file gnunet-service-transport.c */