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22 * @file rps/gnunet-service-rps.c
23 * @brief rps service implementation
24 * @author Julius Bünger
27 #include "gnunet_util_lib.h"
28 #include "gnunet_cadet_service.h"
29 #include "gnunet_nse_service.h"
32 #include "gnunet-service-rps_sampler.h"
37 #define LOG(kind, ...) GNUNET_log(kind, __VA_ARGS__)
39 // TODO modify @brief in every file
41 // TODO check for overflows
43 // TODO align message structs
45 // (TODO api -- possibility of getting weak random peer immideately)
47 // TODO malicious peer
49 // TODO connect to friends
51 // TODO store peers somewhere
55 // hist_size_init, hist_size_max
60 static const struct GNUNET_CONFIGURATION_Handle *cfg;
65 static struct GNUNET_PeerIdentity own_identity;
68 struct GNUNET_PeerIdentity *
69 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list, unsigned int size,
70 const struct GNUNET_PeerIdentity *ignore_list, unsigned int ignore_size);
73 /***********************************************************************
74 * Housekeeping with peers
75 ***********************************************************************/
78 * Struct used to store the context of a connected client.
83 * The message queue to communicate with the client.
85 struct GNUNET_MQ_Handle *mq;
89 * Used to keep track in what lists single peerIDs are.
93 PULL_REPLY_PENDING = 0x01,
94 IN_OTHER_GOSSIP_LIST = 0x02, // unneeded?
95 IN_OWN_SAMPLER_LIST = 0x04, // unneeded?
96 IN_OWN_GOSSIP_LIST = 0x08, // unneeded?
99 * We set this bit when we can be sure the other peer is/was live.
106 * Functions of this type can be used to be stored at a peer for later execution.
108 typedef void (* PeerOp) (void *cls, const struct GNUNET_PeerIdentity *peer);
111 * Outstanding operation on peer consisting of callback and closure
113 struct PeerOutstandingOp
128 * Struct used to keep track of other peer's status
130 * This is stored in a multipeermap.
135 * In own gossip/sampler list, in other's gossip/sampler list
140 * Message queue open to client
142 struct GNUNET_MQ_Handle *mq;
145 * Channel open to client.
147 struct GNUNET_CADET_Channel *send_channel;
150 * Channel open from client.
152 struct GNUNET_CADET_Channel *recv_channel; // unneeded?
155 * Array of outstanding operations on this peer.
157 struct PeerOutstandingOp *outstanding_ops;
160 * Number of outstanding operations.
162 unsigned int num_outstanding_ops;
163 //size_t num_outstanding_ops;
166 * Handle to the callback given to cadet_ntfy_tmt_rdy()
168 * To be canceled on shutdown.
170 struct GNUNET_CADET_TransmitHandle *is_live_task;
173 * Identity of the peer
175 struct GNUNET_PeerIdentity peer_id;
178 * This is pobably followed by 'statistical' data (when we first saw
179 * him, how did we get his ID, how many pushes (in a timeinterval),
184 /***********************************************************************
185 * /Housekeeping with peers
186 ***********************************************************************/
192 /***********************************************************************
194 ***********************************************************************/
197 * Sampler used for the Brahms protocol itself.
199 static struct RPS_Sampler *prot_sampler;
202 * Sampler used for the clients.
204 static struct RPS_Sampler *client_sampler;
207 * Set of all peers to keep track of them.
209 static struct GNUNET_CONTAINER_MultiPeerMap *peer_map;
213 * The gossiped list of peers.
215 static struct GNUNET_PeerIdentity *gossip_list;
218 * Size of the gossiped list
220 //static unsigned int gossip_list_size;
221 static uint32_t gossip_list_size;
225 * The size of sampler we need to be able to satisfy the client's need of
228 static unsigned int sampler_size_client_need;
231 * The size of sampler we need to be able to satisfy the Brahms protocol's
232 * need of random peers.
234 * This is directly taken as the #gossip_list_size on update of the
237 * This is one minimum size the sampler grows to.
239 static unsigned int sampler_size_est_need;
243 * Percentage of total peer number in the gossip list
244 * to send random PUSHes to
249 * Percentage of total peer number in the gossip list
250 * to send random PULLs to
255 * The percentage gamma of history updates.
256 * Simply 1 - alpha - beta
261 * Identifier for the main task that runs periodically.
263 static struct GNUNET_SCHEDULER_Task *do_round_task;
266 * Time inverval the do_round task runs in.
268 static struct GNUNET_TIME_Relative round_interval;
273 * List to store peers received through pushes temporary.
275 * TODO -> multipeermap
277 static struct GNUNET_PeerIdentity *push_list;
280 * Size of the push_list;
282 static unsigned int push_list_size;
283 //size_t push_list_size;
286 * List to store peers received through pulls temporary.
288 * TODO -> multipeermap
290 static struct GNUNET_PeerIdentity *pull_list;
293 * Size of the pull_list;
295 static unsigned int pull_list_size;
296 //size_t pull_list_size;
302 static struct GNUNET_NSE_Handle *nse;
307 static struct GNUNET_CADET_Handle *cadet_handle;
313 * Only needed in the beginning to check how many of the 64 deltas
316 static unsigned int req_counter;
319 * Time of the last request we received.
321 * Used to compute the expected request rate.
323 static struct GNUNET_TIME_Absolute last_request;
326 * Size of #request_deltas.
328 #define REQUEST_DELTAS_SIZE 64
329 static unsigned int request_deltas_size = REQUEST_DELTAS_SIZE;
332 * Last 64 deltas between requests
334 static struct GNUNET_TIME_Relative request_deltas[REQUEST_DELTAS_SIZE];
337 * The prediction of the rate of requests
339 static struct GNUNET_TIME_Relative request_rate;
343 * List with the peers we sent requests to.
345 struct GNUNET_PeerIdentity *pending_pull_reply_list;
348 * Size of #pending_pull_reply_list.
350 uint32_t pending_pull_reply_list_size;
354 * Number of history update tasks.
356 uint32_t num_hist_update_tasks;
359 /***********************************************************************
361 ***********************************************************************/
368 /***********************************************************************
370 ***********************************************************************/
373 * Set a peer flag of given peer context.
375 #define set_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags |= mask)
378 * Get peer flag of given peer context.
380 #define get_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags & mask ? GNUNET_YES : GNUNET_NO)
383 * Unset flag of given peer context.
385 #define unset_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags &= (~mask))
389 * Clean the send channel of a peer
392 peer_clean (const struct GNUNET_PeerIdentity *peer);
396 * Check if peer is already in peer array.
399 in_arr (const struct GNUNET_PeerIdentity *array,
400 unsigned int arr_size,
401 const struct GNUNET_PeerIdentity *peer)
403 GNUNET_assert (NULL != peer);
408 GNUNET_assert (NULL != array);
412 for (i = 0; i < arr_size ; i++)
413 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&array[i], peer))
420 * Print peerlist to log.
423 print_peer_list (struct GNUNET_PeerIdentity *list, unsigned int len)
427 LOG (GNUNET_ERROR_TYPE_DEBUG,
428 "Printing peer list of length %u at %p:\n",
431 for (i = 0 ; i < len ; i++)
433 LOG (GNUNET_ERROR_TYPE_DEBUG,
435 i, GNUNET_i2s (&list[i]));
441 * Remove peer from list.
444 rem_from_list (struct GNUNET_PeerIdentity **peer_list,
445 unsigned int *list_size,
446 const struct GNUNET_PeerIdentity *peer)
449 struct GNUNET_PeerIdentity *tmp;
453 LOG (GNUNET_ERROR_TYPE_DEBUG,
454 "Removing peer %s from list at %p\n",
458 for ( i = 0 ; i < *list_size ; i++ )
460 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&tmp[i], peer))
462 if (i < *list_size -1)
463 { /* Not at the last entry -- shift peers left */
464 memcpy (&tmp[i], &tmp[i +1],
465 ((*list_size) - i -1) * sizeof (struct GNUNET_PeerIdentity));
467 /* Remove last entry (should be now useless PeerID) */
468 GNUNET_array_grow (tmp, *list_size, (*list_size) -1);
475 * Get random peer from the given list but don't return one from the @a ignore_list.
477 struct GNUNET_PeerIdentity *
478 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list,
480 const struct GNUNET_PeerIdentity *ignore_list,
481 uint32_t ignore_size)
485 struct GNUNET_PeerIdentity *tmp_peer_list;
486 struct GNUNET_PeerIdentity *peer;
488 GNUNET_assert (NULL != peer_list);
493 tmp_peer_list = NULL;
494 GNUNET_array_grow (tmp_peer_list, tmp_size, list_size);
495 memcpy (tmp_peer_list,
497 list_size * sizeof (struct GNUNET_PeerIdentity));
498 peer = GNUNET_new (struct GNUNET_PeerIdentity);
501 * Choose the r_index of the peer we want to return
502 * at random from the interval of the gossip list
504 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
506 *peer = tmp_peer_list[r_index];
508 while (in_arr (ignore_list, ignore_size, peer))
510 rem_from_list (&tmp_peer_list, &tmp_size, peer);
512 print_peer_list (tmp_peer_list, tmp_size);
521 * Choose the r_index of the peer we want to return
522 * at random from the interval of the gossip list
524 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
526 *peer = tmp_peer_list[r_index];
530 GNUNET_array_grow (tmp_peer_list, tmp_size, 0);
537 * Get the context of a peer. If not existing, create.
540 get_peer_ctx (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
541 const struct GNUNET_PeerIdentity *peer)
543 struct PeerContext *ctx;
545 if ( GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
547 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
551 ctx = GNUNET_new (struct PeerContext);
554 ctx->send_channel = NULL;
555 ctx->recv_channel = NULL;
556 ctx->outstanding_ops = NULL;
557 ctx->num_outstanding_ops = 0;
558 ctx->is_live_task = NULL;
559 ctx->peer_id = *peer;
560 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
561 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
568 * Put random peer from sampler into the gossip list as history update.
571 hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
573 GNUNET_assert (1 == num_peers);
575 if (gossip_list_size < sampler_size_est_need)
576 GNUNET_array_append (gossip_list, gossip_list_size, *ids);
578 if (0 < num_hist_update_tasks)
579 num_hist_update_tasks--;
584 * Set the peer flag to living and call the outstanding operations on this peer.
587 peer_is_live (struct PeerContext *peer_ctx)
589 struct GNUNET_PeerIdentity *peer;
591 peer = &peer_ctx->peer_id;
592 set_peer_flag (peer_ctx, VALID);
594 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer %s is live\n", GNUNET_i2s (peer));
596 if (0 != peer_ctx->num_outstanding_ops)
597 { /* Call outstanding operations */
600 for (i = 0 ; i < peer_ctx->num_outstanding_ops ; i++)
601 peer_ctx->outstanding_ops[i].op (peer_ctx->outstanding_ops[i].op_cls, peer);
602 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
610 * Callback that is called when a channel was effectively established.
611 * This is given to ntfy_tmt_rdy and called when the channel was
612 * successfully established.
615 cadet_ntfy_tmt_rdy_cb (void *cls, size_t size, void *buf)
617 struct PeerContext *peer_ctx = (struct PeerContext *) cls;
621 peer_is_live (peer_ctx);
623 //if (NULL != peer_ctx->is_live_task)
625 // LOG (GNUNET_ERROR_TYPE_DEBUG,
626 // "Trying to cancle is_live_task for peer %s\n",
627 // GNUNET_i2s (&peer_ctx->peer_id));
628 // GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
629 // peer_ctx->is_live_task = NULL;
631 peer_ctx->is_live_task = NULL;
638 * Get the channel of a peer. If not existing, create.
640 struct GNUNET_CADET_Channel *
641 get_channel (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
642 const struct GNUNET_PeerIdentity *peer)
644 struct PeerContext *ctx;
646 LOG (GNUNET_ERROR_TYPE_DEBUG,
647 "Trying to establish channel to peer %s\n",
650 ctx = get_peer_ctx (peer_map, peer);
651 if (NULL == ctx->send_channel)
653 ctx->send_channel = GNUNET_CADET_channel_create (cadet_handle,
656 GNUNET_RPS_CADET_PORT,
657 GNUNET_CADET_OPTION_RELIABLE);
659 /* If we don't know whether peer is live,
660 * get notified when we know it is live. */
661 if (GNUNET_YES != get_peer_flag (ctx, VALID)
662 && NULL != ctx->is_live_task
663 && NULL == ctx->recv_channel
664 && NULL == ctx->is_live_task)
666 ctx->peer_id = *peer;
667 LOG (GNUNET_ERROR_TYPE_DEBUG,
668 "Get informed about peer %s getting live\n",
671 GNUNET_CADET_notify_transmit_ready (ctx->send_channel,
673 GNUNET_TIME_UNIT_FOREVER_REL,
674 sizeof (struct GNUNET_MessageHeader),
675 cadet_ntfy_tmt_rdy_cb,
678 // FIXME check whether this is NULL
680 // do I have to explicitly put it in the peer_map?
681 (void) GNUNET_CONTAINER_multipeermap_put
685 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
687 return ctx->send_channel;
692 * Get the message queue of a specific peer.
694 * If we already have a message queue open to this client,
695 * simply return it, otherways create one.
697 struct GNUNET_MQ_Handle *
698 get_mq (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
699 const struct GNUNET_PeerIdentity *peer_id)
701 struct PeerContext *peer_ctx;
703 peer_ctx = get_peer_ctx (peer_map, peer_id);
705 GNUNET_assert (NULL == peer_ctx->is_live_task);
707 if (NULL == peer_ctx->mq)
709 (void) get_channel (peer_map, peer_id);
710 peer_ctx->mq = GNUNET_CADET_mq_create (peer_ctx->send_channel);
711 //do I have to explicitly put it in the peer_map?
712 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer_id, peer_ctx,
713 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
720 * Sum all time relatives of an array.
722 struct GNUNET_TIME_Relative
723 T_relative_sum (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
725 struct GNUNET_TIME_Relative sum;
728 sum = GNUNET_TIME_UNIT_ZERO;
729 for ( i = 0 ; i < arr_size ; i++ )
731 sum = GNUNET_TIME_relative_add (sum, rel_array[i]);
738 * Compute the average of given time relatives.
740 struct GNUNET_TIME_Relative
741 T_relative_avg (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
743 return GNUNET_TIME_relative_divide (T_relative_sum (rel_array, arr_size), arr_size);
748 * Insert PeerID in #pull_list
750 * Called once we know a peer is live.
753 insert_in_pull_list (void *cls, const struct GNUNET_PeerIdentity *peer)
755 if (GNUNET_NO == in_arr (pull_list, pull_list_size, peer))
756 GNUNET_array_append (pull_list, pull_list_size, *peer);
762 * Check whether #insert_in_pull_list was already scheduled
765 insert_in_pull_list_scheduled (const struct PeerContext *peer_ctx)
769 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
770 if (insert_in_pull_list == peer_ctx->outstanding_ops[i].op)
777 * Insert PeerID in #gossip_list
779 * Called once we know a peer is live.
782 insert_in_gossip_list (void *cls, const struct GNUNET_PeerIdentity *peer)
784 if (GNUNET_NO == in_arr (gossip_list, gossip_list_size, peer))
785 GNUNET_array_append (gossip_list, gossip_list_size, *peer);
787 (void) get_channel (peer_map, peer);
791 * Check whether #insert_in_gossip_list was already scheduled
794 insert_in_gossip_list_scheduled (const struct PeerContext *peer_ctx)
798 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
799 if (insert_in_gossip_list == peer_ctx->outstanding_ops[i].op)
806 * Update sampler with given PeerID.
809 insert_in_sampler (void *cls, const struct GNUNET_PeerIdentity *peer)
811 LOG (GNUNET_ERROR_TYPE_DEBUG,
812 "Updating samplers with peer %s from insert_in_sampler()\n",
814 RPS_sampler_update (prot_sampler, peer);
815 RPS_sampler_update (client_sampler, peer);
820 * Check whether #insert_in_sampler was already scheduled
823 insert_in_sampler_scheduled (const struct PeerContext *peer_ctx)
827 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
828 if (insert_in_sampler== peer_ctx->outstanding_ops[i].op)
835 * Wrapper around #RPS_sampler_resize()
837 * If we do not have enough sampler elements, double current sampler size
838 * If we have more than enough sampler elements, halv current sampler size
841 resize_wrapper (struct RPS_Sampler *sampler, uint32_t new_size)
843 unsigned int sampler_size;
846 // TODO respect the min, max
847 sampler_size = RPS_sampler_get_size (sampler);
848 if (sampler_size > new_size * 4)
850 RPS_sampler_resize (sampler, sampler_size / 2);
852 else if (sampler_size < new_size)
854 RPS_sampler_resize (sampler, sampler_size * 2);
856 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
861 * Wrapper around #RPS_sampler_resize() resizing the client sampler
864 client_resize_wrapper ()
866 uint32_t bigger_size;
867 unsigned int sampler_size;
871 sampler_size = RPS_sampler_get_size (client_sampler);
873 if (sampler_size_est_need > sampler_size_client_need)
874 bigger_size = sampler_size_est_need;
876 bigger_size = sampler_size_client_need;
878 // TODO respect the min, max
879 resize_wrapper (client_sampler, bigger_size);
880 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
885 * Estimate request rate
887 * Called every time we receive a request from the client.
892 struct GNUNET_TIME_Relative max_round_duration;
894 if (request_deltas_size > req_counter)
896 if ( 1 < req_counter)
898 /* Shift last request deltas to the right */
899 memcpy (&request_deltas[1],
901 (req_counter - 1) * sizeof (struct GNUNET_TIME_Relative));
903 /* Add current delta to beginning */
905 GNUNET_TIME_absolute_get_difference (last_request,
906 GNUNET_TIME_absolute_get ());
907 request_rate = T_relative_avg (request_deltas, req_counter);
909 /* Compute the duration a round will maximally take */
911 GNUNET_TIME_relative_add (round_interval,
912 GNUNET_TIME_relative_divide (round_interval, 2));
914 /* Set the estimated size the sampler has to have to
915 * satisfy the current client request rate */
916 sampler_size_client_need =
917 max_round_duration.rel_value_us / request_rate.rel_value_us;
919 /* Resize the sampler */
920 client_resize_wrapper ();
922 last_request = GNUNET_TIME_absolute_get ();
926 /***********************************************************************
928 ***********************************************************************/
935 * Function called by NSE.
937 * Updates sizes of sampler list and gossip list and adapt those lists
941 nse_callback (void *cls, struct GNUNET_TIME_Absolute timestamp,
942 double logestimate, double std_dev)
945 //double scale; // TODO this might go gloabal/config
947 LOG (GNUNET_ERROR_TYPE_DEBUG,
948 "Received a ns estimate - logest: %f, std_dev: %f (old_size: %u)\n",
949 logestimate, std_dev, RPS_sampler_get_size (prot_sampler));
951 estimate = GNUNET_NSE_log_estimate_to_n (logestimate);
952 // GNUNET_NSE_log_estimate_to_n (logestimate);
953 estimate = pow (estimate, 1.0 / 3);
954 // TODO add if std_dev is a number
955 // estimate += (std_dev * scale);
956 if (2 < ceil (estimate))
958 LOG (GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
959 sampler_size_est_need = estimate;
961 LOG (GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
963 /* If the NSE has changed adapt the lists accordingly */
964 resize_wrapper (prot_sampler, sampler_size_est_need);
965 client_resize_wrapper ();
970 * Callback called once the requested PeerIDs are ready.
972 * Sends those to the requesting client.
974 void client_respond (void *cls,
975 struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
977 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler returned %" PRIX32 " peers\n", num_peers);
978 struct GNUNET_MQ_Envelope *ev;
979 struct GNUNET_RPS_CS_ReplyMessage *out_msg;
980 struct GNUNET_SERVER_Client *client;
981 uint32_t size_needed;
982 struct client_ctx *cli_ctx;
984 client = (struct GNUNET_SERVER_Client *) cls;
986 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
987 num_peers * sizeof (struct GNUNET_PeerIdentity);
989 GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= size_needed);
991 ev = GNUNET_MQ_msg_extra (out_msg,
992 num_peers * sizeof (struct GNUNET_PeerIdentity),
993 GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
994 out_msg->num_peers = htonl (num_peers);
998 num_peers * sizeof (struct GNUNET_PeerIdentity));
1001 cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct client_ctx);
1002 if ( NULL == cli_ctx ) {
1003 cli_ctx = GNUNET_new (struct client_ctx);
1004 cli_ctx->mq = GNUNET_MQ_queue_for_server_client (client);
1005 GNUNET_SERVER_client_set_user_context (client, cli_ctx);
1008 GNUNET_MQ_send (cli_ctx->mq, ev);
1013 * Handle RPS request from the client.
1015 * @param cls closure
1016 * @param client identification of the client
1017 * @param message the actual message
1020 handle_client_request (void *cls,
1021 struct GNUNET_SERVER_Client *client,
1022 const struct GNUNET_MessageHeader *message)
1024 struct GNUNET_RPS_CS_RequestMessage *msg;
1026 uint32_t size_needed;
1029 msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
1031 num_peers = ntohl (msg->num_peers);
1032 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
1033 num_peers * sizeof (struct GNUNET_PeerIdentity);
1035 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
1037 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1041 for (i = 0 ; i < num_peers ; i++)
1044 LOG (GNUNET_ERROR_TYPE_DEBUG, "Client requested %" PRIX32 " random peer(s).\n", num_peers);
1046 RPS_sampler_get_n_rand_peers (client_sampler, client_respond,
1047 client, num_peers, GNUNET_YES);
1049 GNUNET_SERVER_receive_done (client,
1055 * Handle seed from the client.
1057 * @param cls closure
1058 * @param client identification of the client
1059 * @param message the actual message
1062 handle_client_seed (void *cls,
1063 struct GNUNET_SERVER_Client *client,
1064 const struct GNUNET_MessageHeader *message)
1066 struct GNUNET_RPS_CS_SeedMessage *in_msg;
1067 struct GNUNET_PeerIdentity *peers;
1071 if (sizeof (struct GNUNET_RPS_CS_SeedMessage) > ntohs (message->size))
1073 GNUNET_break_op (0);
1074 GNUNET_SERVER_receive_done (client,
1078 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
1079 num_peers = ntohl (in_msg->num_peers);
1080 peers = (struct GNUNET_PeerIdentity *) &in_msg[1];
1081 //peers = GNUNET_new_array (num_peers, struct GNUNET_PeerIdentity);
1082 //memcpy (peers, &in_msg[1], num_peers * sizeof (struct GNUNET_PeerIdentity));
1084 if ((ntohs (message->size) - sizeof (struct GNUNET_RPS_CS_SeedMessage)) /
1085 sizeof (struct GNUNET_PeerIdentity) != num_peers)
1087 GNUNET_break_op (0);
1088 GNUNET_SERVER_receive_done (client,
1092 LOG (GNUNET_ERROR_TYPE_DEBUG,
1093 "Client seeded peers:\n");
1094 print_peer_list (peers, num_peers);
1096 // TODO check for validity of ids
1098 for (i = 0 ; i < num_peers ; i++)
1100 LOG (GNUNET_ERROR_TYPE_DEBUG,
1101 "Updating samplers with seed %" PRIX32 ": %s\n",
1103 GNUNET_i2s (&peers[i]));
1105 RPS_sampler_update (prot_sampler, &peers[i]);
1106 RPS_sampler_update (client_sampler, &peers[i]);
1109 //GNUNET_free (peers);
1111 GNUNET_SERVER_receive_done (client,
1117 * Handle a PUSH message from another peer.
1119 * Check the proof of work and store the PeerID
1120 * in the temporary list for pushed PeerIDs.
1122 * @param cls Closure
1123 * @param channel The channel the PUSH was received over
1124 * @param channel_ctx The context associated with this channel
1125 * @param msg The message header
1128 handle_peer_push (void *cls,
1129 struct GNUNET_CADET_Channel *channel,
1131 const struct GNUNET_MessageHeader *msg)
1133 const struct GNUNET_PeerIdentity *peer;
1135 // (check the proof of work)
1137 peer = (const struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
1138 // FIXME wait for cadet to change this function
1139 LOG (GNUNET_ERROR_TYPE_DEBUG, "PUSH received (%s)\n", GNUNET_i2s (peer));
1141 /* Add the sending peer to the push_list */
1142 if (GNUNET_NO == in_arr (push_list, push_list_size, peer))
1143 GNUNET_array_append (push_list, push_list_size, *peer);
1149 * Handle PULL REQUEST request message from another peer.
1151 * Reply with the gossip list of PeerIDs.
1153 * @param cls Closure
1154 * @param channel The channel the PUSH was received over
1155 * @param channel_ctx The context associated with this channel
1156 * @param msg The message header
1159 handle_peer_pull_request (void *cls,
1160 struct GNUNET_CADET_Channel *channel,
1162 const struct GNUNET_MessageHeader *msg)
1164 struct GNUNET_PeerIdentity *peer;
1166 struct GNUNET_MQ_Handle *mq;
1167 struct GNUNET_MQ_Envelope *ev;
1168 struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
1171 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel,
1172 GNUNET_CADET_OPTION_PEER);
1173 // FIXME wait for cadet to change this function
1175 /* Compute actual size */
1176 send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
1177 gossip_list_size * sizeof (struct GNUNET_PeerIdentity);
1179 if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
1180 /* Compute number of peers to send
1181 * If too long, simply truncate */
1183 (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
1184 sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1185 sizeof (struct GNUNET_PeerIdentity);
1187 send_size = gossip_list_size;
1189 LOG (GNUNET_ERROR_TYPE_DEBUG,
1190 "PULL REQUEST from peer %s received, going to send %u peers\n",
1191 GNUNET_i2s (peer), send_size);
1193 mq = get_mq (peer_map, peer);
1195 ev = GNUNET_MQ_msg_extra (out_msg,
1196 send_size * sizeof (struct GNUNET_PeerIdentity),
1197 GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
1198 //out_msg->num_peers = htonl (gossip_list_size);
1199 out_msg->num_peers = htonl (send_size);
1200 memcpy (&out_msg[1], gossip_list,
1201 send_size * sizeof (struct GNUNET_PeerIdentity));
1203 GNUNET_MQ_send (mq, ev);
1210 * Handle PULL REPLY message from another peer.
1212 * Check whether we sent a corresponding request and
1213 * whether this reply is the first one.
1215 * @param cls Closure
1216 * @param channel The channel the PUSH was received over
1217 * @param channel_ctx The context associated with this channel
1218 * @param msg The message header
1221 handle_peer_pull_reply (void *cls,
1222 struct GNUNET_CADET_Channel *channel,
1224 const struct GNUNET_MessageHeader *msg)
1226 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
1228 struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
1229 struct GNUNET_PeerIdentity *peers;
1230 struct PeerContext *peer_ctx;
1231 struct GNUNET_PeerIdentity *sender;
1232 struct PeerContext *sender_ctx;
1233 struct PeerOutstandingOp out_op;
1236 /* Check for protocol violation */
1237 if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
1239 GNUNET_break_op (0);
1240 return GNUNET_SYSERR;
1242 in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
1243 if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1244 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1246 LOG (GNUNET_ERROR_TYPE_ERROR,
1247 "message says it sends %" PRIu64 " peers, have space for %i peers\n",
1248 ntohl (in_msg->num_peers),
1249 (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1250 sizeof (struct GNUNET_PeerIdentity));
1251 GNUNET_break_op (0);
1252 return GNUNET_SYSERR;
1255 sender = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1256 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1257 // Guess simply casting isn't the nicest way...
1258 // FIXME wait for cadet to change this function
1259 sender_ctx = get_peer_ctx (peer_map, sender);
1261 if (GNUNET_YES == get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
1263 GNUNET_break_op (0);
1267 /* Do actual logic */
1268 peers = (struct GNUNET_PeerIdentity *) &msg[1];
1269 for (i = 0 ; i < ntohl (in_msg->num_peers) ; i++)
1271 peer_ctx = get_peer_ctx (peer_map, &peers[i]);
1272 if (GNUNET_YES == get_peer_flag (peer_ctx, VALID)
1273 || NULL != peer_ctx->send_channel
1274 || NULL != peer_ctx->recv_channel)
1276 if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i])
1277 && GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peers[i]))
1278 GNUNET_array_append (pull_list, pull_list_size, peers[i]);
1280 else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
1282 out_op.op = insert_in_pull_list;
1283 out_op.op_cls = NULL;
1284 GNUNET_array_append (peer_ctx->outstanding_ops,
1285 peer_ctx->num_outstanding_ops,
1290 unset_peer_flag (sender_ctx, PULL_REPLY_PENDING);
1291 rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, sender);
1297 #if ENABLE_MALICIOUS
1299 * Turn RPS service to act malicious.
1301 * @param cls Closure
1302 * @param channel The channel the PUSH was received over
1303 * @param channel_ctx The context associated with this channel
1304 * @param msg The message header
1307 handle_peer_act_malicious (void *cls,
1308 struct GNUNET_CADET_Channel *channel,
1310 const struct GNUNET_MessageHeader *msg)
1312 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
1314 /* Check for protocol violation */
1315 //if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
1317 // GNUNET_break_op (0);
1318 // return GNUNET_SYSERR;
1320 //in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
1321 //if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1322 // sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1324 // LOG (GNUNET_ERROR_TYPE_ERROR,
1325 // "message says it sends %" PRIu64 " peers, have space for %i peers\n",
1326 // ntohl (in_msg->num_peers),
1327 // (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1328 // sizeof (struct GNUNET_PeerIdentity));
1329 // GNUNET_break_op (0);
1330 // return GNUNET_SYSERR;
1333 //sender = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1334 // (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1335 // // Guess simply casting isn't the nicest way...
1336 // // FIXME wait for cadet to change this function
1337 //sender_ctx = get_peer_ctx (peer_map, sender);
1339 //if (GNUNET_YES == get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
1341 // GNUNET_break_op (0);
1342 // return GNUNET_OK;
1345 /* Do actual logic */
1351 * Send out PUSHes and PULLs.
1353 * This is executed regylary.
1356 do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1358 LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round\n");
1361 unsigned int *permut;
1362 unsigned int n_peers; /* Number of peers we send pushes/pulls to */
1363 struct GNUNET_MQ_Envelope *ev;
1364 struct GNUNET_PeerIdentity peer;
1365 struct GNUNET_PeerIdentity *tmp_peer;
1366 struct GNUNET_MQ_Handle *mq;
1368 LOG (GNUNET_ERROR_TYPE_DEBUG,
1369 "Printing gossip list:\n");
1370 for (i = 0 ; i < gossip_list_size ; i++)
1371 LOG (GNUNET_ERROR_TYPE_DEBUG,
1372 "\t%s\n", GNUNET_i2s (&gossip_list[i]));
1373 // TODO log lists, ...
1375 /* Would it make sense to have one shuffeled gossip list and then
1376 * to send PUSHes to first alpha peers, PULL requests to next beta peers and
1377 * use the rest to update sampler?
1378 * in essence get random peers with consumption */
1381 if (0 < gossip_list_size)
1383 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
1384 (unsigned int) gossip_list_size);
1385 n_peers = ceil (alpha * gossip_list_size);
1386 LOG (GNUNET_ERROR_TYPE_DEBUG,
1387 "Going to send pushes to %u ceil (%f * %u) peers.\n",
1388 n_peers, alpha, gossip_list_size);
1389 for (i = 0 ; i < n_peers ; i++)
1391 peer = gossip_list[permut[i]];
1392 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
1393 { // FIXME if this fails schedule/loop this for later
1394 LOG (GNUNET_ERROR_TYPE_DEBUG,
1395 "Sending PUSH to peer %s of gossiped list.\n",
1396 GNUNET_i2s (&peer));
1398 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
1399 mq = get_mq (peer_map, &peer);
1400 GNUNET_MQ_send (mq, ev);
1403 GNUNET_free (permut);
1407 /* Send PULL requests */
1408 //permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list->size);
1409 n_peers = ceil (beta * gossip_list_size);
1410 LOG (GNUNET_ERROR_TYPE_DEBUG,
1411 "Going to send pulls to %u ceil (%f * %u) peers.\n",
1412 n_peers, beta, gossip_list_size);
1413 for (i = 0 ; i < n_peers ; i++)
1415 tmp_peer = get_rand_peer_ignore_list (gossip_list, gossip_list_size,
1416 pending_pull_reply_list, pending_pull_reply_list_size);
1417 if (NULL != tmp_peer)
1420 GNUNET_free (tmp_peer);
1422 GNUNET_array_append (pending_pull_reply_list, pending_pull_reply_list_size, peer);
1424 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer))
1425 { // FIXME if this fails schedule/loop this for later
1426 LOG (GNUNET_ERROR_TYPE_DEBUG,
1427 "Sending PULL request to peer %s of gossiped list.\n",
1428 GNUNET_i2s (&peer));
1430 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
1431 mq = get_mq (peer_map, &peer);
1432 GNUNET_MQ_send (mq, ev);
1438 /* Update gossip list */
1440 if ( push_list_size <= alpha * gossip_list_size &&
1441 push_list_size != 0 &&
1442 pull_list_size != 0 )
1444 LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the gossip list.\n");
1446 uint32_t first_border;
1447 uint32_t second_border;
1449 uint32_t peers_to_clean_size;
1450 struct GNUNET_PeerIdentity *peers_to_clean;
1452 peers_to_clean = NULL;
1453 peers_to_clean_size = 0;
1454 GNUNET_array_grow (peers_to_clean, peers_to_clean_size, gossip_list_size);
1455 memcpy (peers_to_clean,
1457 gossip_list_size * sizeof (struct GNUNET_PeerIdentity));
1459 first_border = ceil (alpha * sampler_size_est_need);
1460 second_border = first_border + ceil (beta * sampler_size_est_need);
1462 GNUNET_array_grow (gossip_list, gossip_list_size, second_border);
1464 for (i = 0 ; i < first_border ; i++)
1465 { // TODO use RPS_sampler_get_n_rand_peers
1466 /* Update gossip list with peers received through PUSHes */
1467 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1469 gossip_list[i] = push_list[r_index];
1470 // TODO change the peer_flags accordingly
1473 for (i = first_border ; i < second_border ; i++)
1475 /* Update gossip list with peers received through PULLs */
1476 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1478 gossip_list[i] = pull_list[r_index];
1479 // TODO change the peer_flags accordingly
1482 for (i = second_border ; i < sampler_size_est_need ; i++)
1484 /* Update gossip list with peers from history */
1485 RPS_sampler_get_n_rand_peers (prot_sampler, hist_update, NULL, 1, GNUNET_NO);
1486 num_hist_update_tasks++;
1487 // TODO change the peer_flags accordingly
1490 for (i = 0 ; i < gossip_list_size ; i++)
1491 rem_from_list (&peers_to_clean, &peers_to_clean_size, &gossip_list[i]);
1493 for (i = 0 ; i < peers_to_clean_size ; i++)
1494 peer_clean (&peers_to_clean[i]);
1496 GNUNET_free (peers_to_clean);
1500 LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the gossip list.\n");
1502 // TODO independent of that also get some peers from CADET_get_peers()?
1505 /* Update samplers */
1506 for ( i = 0 ; i < push_list_size ; i++ )
1508 LOG (GNUNET_ERROR_TYPE_DEBUG,
1509 "Updating with peer %s from push list\n",
1510 GNUNET_i2s (&push_list[i]));
1511 RPS_sampler_update (prot_sampler, &push_list[i]);
1512 RPS_sampler_update (client_sampler, &push_list[i]);
1513 // TODO set in_flag?
1516 for ( i = 0 ; i < pull_list_size ; i++ )
1518 LOG (GNUNET_ERROR_TYPE_DEBUG,
1519 "Updating with peer %s from pull list\n",
1520 GNUNET_i2s (&pull_list[i]));
1521 RPS_sampler_update (prot_sampler, &push_list[i]);
1522 RPS_sampler_update (client_sampler, &push_list[i]);
1523 // TODO set in_flag?
1527 /* Empty push/pull lists */
1528 GNUNET_array_grow (push_list, push_list_size, 0);
1529 GNUNET_array_grow (pull_list, pull_list_size, 0);
1531 struct GNUNET_TIME_Relative time_next_round;
1532 struct GNUNET_TIME_Relative half_round_interval;
1533 unsigned int rand_delay;
1536 /* Compute random time value between .5 * round_interval and 1.5 *round_interval */
1537 half_round_interval = GNUNET_TIME_relative_divide (round_interval, 2);
1541 * Compute random value between (0 and 1) * round_interval
1542 * via multiplying round_interval with a 'fraction' (0 to value)/value
1544 rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT_MAX/10);
1545 time_next_round = GNUNET_TIME_relative_multiply (round_interval, rand_delay);
1546 time_next_round = GNUNET_TIME_relative_divide (time_next_round, UINT_MAX/10);
1547 time_next_round = GNUNET_TIME_relative_add (time_next_round, half_round_interval);
1548 } while (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == time_next_round.rel_value_us);
1550 /* Schedule next round */
1551 do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_round, NULL);
1552 LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
1557 rps_start (struct GNUNET_SERVER_Handle *server);
1561 * This is called from GNUNET_CADET_get_peers().
1563 * It is called on every peer(ID) that cadet somehow has contact with.
1564 * We use those to initialise the sampler.
1567 init_peer_cb (void *cls,
1568 const struct GNUNET_PeerIdentity *peer,
1569 int tunnel, // "Do we have a tunnel towards this peer?"
1570 unsigned int n_paths, // "Number of known paths towards this peer"
1571 unsigned int best_path) // "How long is the best path?
1572 // (0 = unknown, 1 = ourselves, 2 = neighbor)"
1574 struct PeerOutstandingOp out_op;
1575 struct PeerContext *peer_ctx;
1578 && 0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, peer))
1580 LOG (GNUNET_ERROR_TYPE_DEBUG,
1581 "Got peer %s (at %p) from CADET (gossip_list_size: %u)\n",
1582 GNUNET_i2s (peer), peer, gossip_list_size);
1584 // maybe create a function for that
1585 peer_ctx = get_peer_ctx (peer_map, peer);
1586 if (GNUNET_YES != get_peer_flag (peer_ctx, VALID))
1588 if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
1590 out_op.op = insert_in_sampler;
1591 out_op.op_cls = NULL;
1592 GNUNET_array_append (peer_ctx->outstanding_ops,
1593 peer_ctx->num_outstanding_ops,
1597 if (GNUNET_NO == insert_in_gossip_list_scheduled (peer_ctx))
1599 out_op.op = insert_in_gossip_list;
1600 out_op.op_cls = NULL;
1601 GNUNET_array_append (peer_ctx->outstanding_ops,
1602 peer_ctx->num_outstanding_ops,
1606 /* Trigger livelyness test on peer */
1607 (void) get_channel (peer_map, peer);
1610 // send push/pull to each of those peers?
1616 * Clean the send channel of a peer
1619 peer_clean (const struct GNUNET_PeerIdentity *peer)
1621 struct PeerContext *peer_ctx;
1622 struct GNUNET_CADET_Channel *channel;
1624 if (GNUNET_YES != in_arr (gossip_list, gossip_list_size, peer)
1625 && GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
1627 peer_ctx = get_peer_ctx (peer_map, peer);
1628 if (NULL != peer_ctx->send_channel)
1630 channel = peer_ctx->send_channel;
1631 peer_ctx->send_channel = NULL;
1632 GNUNET_CADET_channel_destroy (channel);
1639 * Callback used to remove peers from the multipeermap.
1642 peer_remove_cb (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
1644 struct PeerContext *peer_ctx;
1645 const struct GNUNET_CADET_Channel *channel =
1646 (const struct GNUNET_CADET_Channel *) cls;
1647 struct GNUNET_CADET_Channel *recv;
1648 struct GNUNET_CADET_Channel *send;
1650 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, value))
1652 peer_ctx = (struct PeerContext *) value;
1654 if (0 != peer_ctx->num_outstanding_ops)
1655 GNUNET_array_grow (peer_ctx->outstanding_ops,
1656 peer_ctx->num_outstanding_ops,
1659 if (NULL != peer_ctx->mq)
1660 GNUNET_MQ_destroy (peer_ctx->mq);
1662 if (NULL != peer_ctx->is_live_task)
1664 LOG (GNUNET_ERROR_TYPE_DEBUG,
1665 "Trying to cancle is_live_task for peer %s\n",
1667 GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
1668 peer_ctx->is_live_task = NULL;
1671 send = peer_ctx->send_channel;
1672 peer_ctx->send_channel = NULL;
1676 GNUNET_CADET_channel_destroy (send);
1679 recv = peer_ctx->send_channel;
1680 peer_ctx->recv_channel = NULL;
1684 GNUNET_CADET_channel_destroy (recv);
1687 if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
1688 LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
1690 GNUNET_free (peer_ctx);
1698 * Task run during shutdown.
1704 shutdown_task (void *cls,
1705 const struct GNUNET_SCHEDULER_TaskContext *tc)
1707 LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
1709 if (NULL != do_round_task)
1711 GNUNET_SCHEDULER_cancel (do_round_task);
1712 do_round_task = NULL;
1717 if (GNUNET_SYSERR ==
1718 GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
1719 LOG (GNUNET_ERROR_TYPE_WARNING,
1720 "Iterating over peers to disconnect from them was cancelled\n");
1723 GNUNET_NSE_disconnect (nse);
1724 GNUNET_CADET_disconnect (cadet_handle);
1725 RPS_sampler_destroy (prot_sampler);
1726 RPS_sampler_destroy (client_sampler);
1727 LOG (GNUNET_ERROR_TYPE_DEBUG,
1728 "Size of the peermap: %u\n",
1729 GNUNET_CONTAINER_multipeermap_size (peer_map));
1730 GNUNET_break (0 == GNUNET_CONTAINER_multipeermap_size (peer_map));
1731 GNUNET_CONTAINER_multipeermap_destroy (peer_map);
1732 GNUNET_array_grow (gossip_list, gossip_list_size, 0);
1733 GNUNET_array_grow (push_list, push_list_size, 0);
1734 GNUNET_array_grow (pull_list, pull_list_size, 0);
1739 * A client disconnected. Remove all of its data structure entries.
1741 * @param cls closure, NULL
1742 * @param client identification of the client
1745 handle_client_disconnect (void *cls,
1746 struct GNUNET_SERVER_Client * client)
1752 * Handle the channel a peer opens to us.
1754 * @param cls The closure
1755 * @param channel The channel the peer wants to establish
1756 * @param initiator The peer's peer ID
1757 * @param port The port the channel is being established over
1758 * @param options Further options
1761 handle_inbound_channel (void *cls,
1762 struct GNUNET_CADET_Channel *channel,
1763 const struct GNUNET_PeerIdentity *initiator,
1765 enum GNUNET_CADET_ChannelOption options)
1767 struct PeerContext *peer_ctx;
1768 struct GNUNET_PeerIdentity peer;
1771 LOG (GNUNET_ERROR_TYPE_DEBUG,
1772 "New channel was established to us (Peer %s).\n",
1773 GNUNET_i2s (&peer));
1775 GNUNET_assert (NULL != channel);
1777 // we might not even store the recv_channel
1779 peer_ctx = get_peer_ctx (peer_map, &peer);
1780 // FIXME what do we do if a channel is established twice?
1781 // overwrite? Clean old channel? ...?
1782 //if (NULL != peer_ctx->recv_channel)
1784 // peer_ctx->recv_channel = channel;
1786 peer_ctx->recv_channel = channel;
1788 peer_ctx->mq = NULL;
1790 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, &peer, peer_ctx,
1791 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1793 peer_is_live (peer_ctx);
1795 return NULL; // TODO
1800 * This is called when a remote peer destroys a channel.
1802 * @param cls The closure
1803 * @param channel The channel being closed
1804 * @param channel_ctx The context associated with this channel
1807 cleanup_channel (void *cls,
1808 const struct GNUNET_CADET_Channel *channel,
1811 struct GNUNET_PeerIdentity *peer;
1812 struct PeerContext *peer_ctx;
1814 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1815 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1816 // Guess simply casting isn't the nicest way...
1817 // FIXME wait for cadet to change this function
1818 LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up channel to peer %s\n",
1821 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
1823 peer_ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
1825 if (NULL == peer_ctx) /* It could have been removed by shutdown_task */
1828 if (channel == peer_ctx->send_channel)
1829 { /* Peer probably went down */
1830 rem_from_list (&gossip_list, &gossip_list_size, peer);
1831 rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, peer);
1833 /* Somwewhat {ab,re}use the iterator function */
1834 /* Cast to void is ok, because it's used as void in peer_remove_cb */
1835 (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
1838 peer_ctx->recv_channel = NULL;
1844 * Actually start the service.
1847 rps_start (struct GNUNET_SERVER_Handle *server)
1849 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1850 {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
1851 sizeof (struct GNUNET_RPS_CS_RequestMessage)},
1852 {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
1856 GNUNET_SERVER_add_handlers (server, handlers);
1857 GNUNET_SERVER_disconnect_notify (server,
1858 &handle_client_disconnect,
1860 LOG (GNUNET_ERROR_TYPE_DEBUG, "Ready to receive requests from clients\n");
1863 do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
1864 LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
1866 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1873 * Process statistics requests.
1875 * @param cls closure
1876 * @param server the initialized server
1877 * @param c configuration to use
1881 struct GNUNET_SERVER_Handle *server,
1882 const struct GNUNET_CONFIGURATION_Handle *c)
1884 // TODO check what this does -- copied from gnunet-boss
1885 // - seems to work as expected
1886 GNUNET_log_setup ("rps", GNUNET_error_type_to_string (GNUNET_ERROR_TYPE_DEBUG), NULL);
1891 GNUNET_CRYPTO_get_peer_identity (cfg, &own_identity); // TODO check return value
1892 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1893 "STARTING SERVICE (rps) for peer [%s]\n",
1894 GNUNET_i2s (&own_identity));
1897 /* Get time interval from the configuration */
1898 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "RPS",
1902 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read ROUNDINTERVAL from config\n");
1903 GNUNET_SCHEDULER_shutdown ();
1907 /* Get initial size of sampler/gossip list from the configuration */
1908 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (cfg, "RPS",
1910 (long long unsigned int *) &sampler_size_est_need))
1912 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read INITSIZE from config\n");
1913 GNUNET_SCHEDULER_shutdown ();
1916 LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
1922 /* connect to NSE */
1923 nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
1924 // TODO check whether that was successful
1925 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to NSE\n");
1931 peer_map = GNUNET_CONTAINER_multipeermap_create (sampler_size_est_need, GNUNET_NO);
1934 /* Initialise cadet */
1935 static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
1936 {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH ,
1937 sizeof (struct GNUNET_MessageHeader)},
1938 {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
1939 sizeof (struct GNUNET_MessageHeader)},
1940 {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
1941 #if ENABLE_MALICIOUS
1942 {&handle_peer_act_malicious, GNUNET_MESSAGE_TYPE_RPS_ACT_MALICIOUS , 0},
1947 const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
1948 cadet_handle = GNUNET_CADET_connect (cfg,
1950 &handle_inbound_channel,
1954 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to CADET\n");
1957 /* Initialise sampler */
1958 struct GNUNET_TIME_Relative half_round_interval;
1959 struct GNUNET_TIME_Relative max_round_interval;
1961 half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
1962 max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
1964 prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval);
1965 client_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval);
1967 /* Initialise push and pull maps */
1972 pending_pull_reply_list = NULL;
1973 pending_pull_reply_list_size = 0;
1976 num_hist_update_tasks = 0;
1979 LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
1980 GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, NULL);
1981 // TODO send push/pull to each of those peers?
1989 * The main function for the rps service.
1991 * @param argc number of arguments from the command line
1992 * @param argv command line arguments
1993 * @return 0 ok, 1 on error
1996 main (int argc, char *const *argv)
1998 return (GNUNET_OK ==
1999 GNUNET_SERVICE_run (argc,
2002 GNUNET_SERVICE_OPTION_NONE,
2003 &run, NULL)) ? 0 : 1;
2006 /* end of gnunet-service-rps.c */