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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))
390 * Check if peer is already in peer array.
393 in_arr (const struct GNUNET_PeerIdentity *array,
394 unsigned int arr_size,
395 const struct GNUNET_PeerIdentity *peer)
397 GNUNET_assert (NULL != peer);
402 GNUNET_assert (NULL != array);
407 while (0 != GNUNET_CRYPTO_cmp_peer_identity (&array[i], peer) &&
418 * Remove peer from list.
421 rem_from_list (struct GNUNET_PeerIdentity *peer_list,
422 unsigned int *list_size,
423 const struct GNUNET_PeerIdentity *peer)
427 for ( i = 0 ; i < *list_size ; i++ )
429 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&peer_list[i], peer))
431 if (i < *list_size -1)
432 { /* Not at the last entry -- shift peers left */
433 memcpy (&peer_list[i], &peer_list[i +1],
434 (*list_size - i -1) * sizeof (struct GNUNET_PeerIdentity));
436 /* Remove last entry (should be now useless PeerID) */
437 GNUNET_array_grow (peer_list, *list_size, *list_size -1);
443 * Get random peer from the given list but don't return one from the @a ignore_list.
445 struct GNUNET_PeerIdentity *
446 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list,
448 const struct GNUNET_PeerIdentity *ignore_list,
449 uint32_t ignore_size)
453 struct GNUNET_PeerIdentity *tmp_peer_list;
454 struct GNUNET_PeerIdentity *peer;
456 GNUNET_assert (NULL != peer_list);
461 tmp_peer_list = NULL;
462 GNUNET_array_grow (tmp_peer_list, tmp_size, list_size);
463 memcpy (tmp_peer_list,
465 list_size * sizeof (struct GNUNET_PeerIdentity));
466 peer = GNUNET_new (struct GNUNET_PeerIdentity);
469 * Choose the r_index of the peer we want to return
470 * at random from the interval of the gossip list
472 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
474 *peer = tmp_peer_list[r_index];
476 while (in_arr (ignore_list, ignore_size, peer))
478 rem_from_list (tmp_peer_list, &tmp_size, peer);
487 * Choose the r_index of the peer we want to return
488 * at random from the interval of the gossip list
490 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
492 *peer = tmp_peer_list[r_index];
496 GNUNET_array_grow (tmp_peer_list, tmp_size, 0);
503 * Get the context of a peer. If not existing, create.
506 get_peer_ctx (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
507 const struct GNUNET_PeerIdentity *peer)
509 struct PeerContext *ctx;
511 if ( GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
513 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
517 ctx = GNUNET_new (struct PeerContext);
520 ctx->send_channel = NULL;
521 ctx->recv_channel = NULL;
522 ctx->outstanding_ops = NULL;
523 ctx->num_outstanding_ops = 0;
524 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
525 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
532 * Put random peer from sampler into the gossip list as history update.
535 hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
537 GNUNET_assert (1 == num_peers);
539 if (gossip_list_size < sampler_size_est_need)
540 GNUNET_array_append (gossip_list, gossip_list_size, *ids);
542 if (0 < num_hist_update_tasks)
543 num_hist_update_tasks--;
548 * Callback that is called when a channel was effectively established.
549 * This is given to ntfy_tmt_rdy and called when the channel was
550 * successfully established.
553 peer_is_live (void *cls, size_t size, void *buf)
555 struct PeerContext *ctx = cls;
556 struct GNUNET_PeerIdentity *peer;
557 struct PeerContext *peer_ctx;
563 ctx->is_live_task = NULL;
564 peer = &ctx->peer_id;
565 peer_ctx = get_peer_ctx (peer_map, peer);
566 peer_ctx->peer_flags |= LIVING;
568 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer %s is live\n", GNUNET_i2s (peer));
570 if (0 != peer_ctx->num_outstanding_ops)
571 { /* Call outstanding operations */
574 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
575 peer_ctx->outstanding_ops[i].op (peer_ctx->outstanding_ops[i].op_cls, peer);
576 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
579 //if (NULL != peer_ctx->is_live_task)
581 // GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
582 // peer_ctx->is_live_task = NULL; // needed?
589 * Get the channel of a peer. If not existing, create.
591 struct GNUNET_CADET_Channel *
592 get_channel (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
593 const struct GNUNET_PeerIdentity *peer)
595 struct PeerContext *ctx;
597 ctx = get_peer_ctx (peer_map, peer);
598 if (NULL == ctx->send_channel)
600 ctx->send_channel = GNUNET_CADET_channel_create (cadet_handle, NULL, peer,
601 GNUNET_RPS_CADET_PORT,
602 GNUNET_CADET_OPTION_RELIABLE);
604 if (NULL == ctx->recv_channel)
606 ctx->peer_id = *peer;
608 GNUNET_CADET_notify_transmit_ready (ctx->send_channel, GNUNET_NO,
609 GNUNET_TIME_UNIT_FOREVER_REL,
610 sizeof (struct GNUNET_MessageHeader),
614 // do I have to explicitly put it in the peer_map?
615 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
616 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
618 return ctx->send_channel;
623 * Get the message queue of a specific peer.
625 * If we already have a message queue open to this client,
626 * simply return it, otherways create one.
628 struct GNUNET_MQ_Handle *
629 get_mq (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
630 const struct GNUNET_PeerIdentity *peer_id)
632 struct PeerContext *ctx;
634 ctx = get_peer_ctx (peer_map, peer_id);
637 (void) get_channel (peer_map, peer_id);
638 ctx->mq = GNUNET_CADET_mq_create (ctx->send_channel);
639 //do I have to explicitly put it in the peer_map?
640 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer_id, ctx,
641 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
648 * Sum all time relatives of an array.
650 struct GNUNET_TIME_Relative
651 T_relative_sum (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
653 struct GNUNET_TIME_Relative sum;
656 sum = GNUNET_TIME_UNIT_ZERO;
657 for ( i = 0 ; i < arr_size ; i++ )
659 sum = GNUNET_TIME_relative_add (sum, rel_array[i]);
666 * Compute the average of given time relatives.
668 struct GNUNET_TIME_Relative
669 T_relative_avg (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
671 return GNUNET_TIME_relative_divide (T_relative_sum (rel_array, arr_size), arr_size);
676 * Insert PeerID in #pull_list
678 * Called once we know a peer is live.
681 insert_in_pull_list (void *cls, const struct GNUNET_PeerIdentity *peer)
683 if (GNUNET_NO == in_arr (pull_list, pull_list_size, peer))
684 GNUNET_array_append (pull_list, pull_list_size, *peer);
688 * Check whether #insert_in_pull_list was already scheduled
691 insert_in_pull_list_scheduled (const struct PeerContext *peer_ctx)
695 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
696 if (insert_in_pull_list == peer_ctx->outstanding_ops[i].op)
703 * Insert PeerID in #gossip_list
705 * Called once we know a peer is live.
708 insert_in_gossip_list (void *cls, const struct GNUNET_PeerIdentity *peer)
710 if (GNUNET_NO == in_arr (gossip_list, gossip_list_size, peer))
711 GNUNET_array_append (gossip_list, gossip_list_size, *peer);
715 * Check whether #insert_in_pull_list was already scheduled
718 insert_in_gossip_list_scheduled (const struct PeerContext *peer_ctx)
722 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
723 if (insert_in_gossip_list == peer_ctx->outstanding_ops[i].op)
730 * Update sampler with given PeerID.
733 insert_in_sampler (void *cls, const struct GNUNET_PeerIdentity *peer)
735 RPS_sampler_update (prot_sampler, peer);
736 RPS_sampler_update (client_sampler, peer);
741 * Check whether #insert_in_sampler was already scheduled
744 insert_in_sampler_scheduled (const struct PeerContext *peer_ctx)
748 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
749 if (insert_in_sampler== peer_ctx->outstanding_ops[i].op)
756 * Wrapper around #RPS_sampler_resize()
758 * If we do not have enough sampler elements, double current sampler size
759 * If we have more than enough sampler elements, halv current sampler size
762 resize_wrapper (struct RPS_Sampler *sampler, uint32_t new_size)
764 unsigned int sampler_size;
767 // TODO respect the min, max
768 sampler_size = RPS_sampler_get_size (sampler);
769 if (sampler_size > new_size * 4)
771 RPS_sampler_resize (sampler, sampler_size / 2);
773 else if (sampler_size < new_size)
775 RPS_sampler_resize (sampler, sampler_size * 2);
777 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
782 * Wrapper around #RPS_sampler_resize() resizing the client sampler
785 client_resize_wrapper ()
787 uint32_t bigger_size;
788 unsigned int sampler_size;
792 sampler_size = RPS_sampler_get_size (client_sampler);
794 if (sampler_size_est_need > sampler_size_client_need)
795 bigger_size = sampler_size_est_need;
797 bigger_size = sampler_size_client_need;
799 // TODO respect the min, max
800 resize_wrapper (client_sampler, bigger_size);
801 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
806 * Estimate request rate
808 * Called every time we receive a request from the client.
813 struct GNUNET_TIME_Relative max_round_duration;
815 if (request_deltas_size > req_counter)
817 if ( 1 < req_counter)
819 /* Shift last request deltas to the right */
820 memcpy (&request_deltas[1],
822 (req_counter - 1) * sizeof (struct GNUNET_TIME_Relative));
824 /* Add current delta to beginning */
826 GNUNET_TIME_absolute_get_difference (last_request,
827 GNUNET_TIME_absolute_get ());
828 request_rate = T_relative_avg (request_deltas, req_counter);
830 /* Compute the duration a round will maximally take */
832 GNUNET_TIME_relative_add (round_interval,
833 GNUNET_TIME_relative_divide (round_interval, 2));
835 /* Set the estimated size the sampler has to have to
836 * satisfy the current client request rate */
837 sampler_size_client_need =
838 max_round_duration.rel_value_us / request_rate.rel_value_us;
840 /* Resize the sampler */
841 client_resize_wrapper ();
843 last_request = GNUNET_TIME_absolute_get ();
847 /***********************************************************************
849 ***********************************************************************/
856 * Function called by NSE.
858 * Updates sizes of sampler list and gossip list and adapt those lists
862 nse_callback (void *cls, struct GNUNET_TIME_Absolute timestamp,
863 double logestimate, double std_dev)
866 //double scale; // TODO this might go gloabal/config
868 LOG (GNUNET_ERROR_TYPE_DEBUG,
869 "Received a ns estimate - logest: %f, std_dev: %f (old_size: %u)\n",
870 logestimate, std_dev, RPS_sampler_get_size (prot_sampler));
872 estimate = GNUNET_NSE_log_estimate_to_n (logestimate);
873 // GNUNET_NSE_log_estimate_to_n (logestimate);
874 estimate = pow (estimate, 1.0 / 3);
875 // TODO add if std_dev is a number
876 // estimate += (std_dev * scale);
877 if (2 < ceil (estimate))
879 LOG (GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
880 sampler_size_est_need = estimate;
882 LOG (GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
884 /* If the NSE has changed adapt the lists accordingly */
885 resize_wrapper (prot_sampler, sampler_size_est_need);
886 client_resize_wrapper ();
891 * Callback called once the requested PeerIDs are ready.
893 * Sends those to the requesting client.
895 void client_respond (void *cls,
896 struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
898 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler returned %" PRIX32 " peers\n", num_peers);
899 struct GNUNET_MQ_Envelope *ev;
900 struct GNUNET_RPS_CS_ReplyMessage *out_msg;
901 struct GNUNET_SERVER_Client *client;
902 uint32_t size_needed;
903 struct client_ctx *cli_ctx;
905 client = (struct GNUNET_SERVER_Client *) cls;
907 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
908 num_peers * sizeof (struct GNUNET_PeerIdentity);
910 GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= size_needed);
912 ev = GNUNET_MQ_msg_extra (out_msg,
913 num_peers * sizeof (struct GNUNET_PeerIdentity),
914 GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
915 out_msg->num_peers = htonl (num_peers);
919 num_peers * sizeof (struct GNUNET_PeerIdentity));
922 cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct client_ctx);
923 if ( NULL == cli_ctx ) {
924 cli_ctx = GNUNET_new (struct client_ctx);
925 cli_ctx->mq = GNUNET_MQ_queue_for_server_client (client);
926 GNUNET_SERVER_client_set_user_context (client, cli_ctx);
929 GNUNET_MQ_send (cli_ctx->mq, ev);
934 * Handle RPS request from the client.
937 * @param client identification of the client
938 * @param message the actual message
941 handle_client_request (void *cls,
942 struct GNUNET_SERVER_Client *client,
943 const struct GNUNET_MessageHeader *message)
945 struct GNUNET_RPS_CS_RequestMessage *msg;
947 uint32_t size_needed;
950 msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
952 num_peers = ntohl (msg->num_peers);
953 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
954 num_peers * sizeof (struct GNUNET_PeerIdentity);
956 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
958 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
962 for (i = 0 ; i < num_peers ; i++)
965 LOG (GNUNET_ERROR_TYPE_DEBUG, "Client requested %" PRIX32 " random peer(s).\n", num_peers);
967 RPS_sampler_get_n_rand_peers (client_sampler, client_respond,
968 client, num_peers, GNUNET_YES);
970 GNUNET_SERVER_receive_done (client,
976 * Handle seed from the client.
979 * @param client identification of the client
980 * @param message the actual message
983 handle_client_seed (void *cls,
984 struct GNUNET_SERVER_Client *client,
985 const struct GNUNET_MessageHeader *message)
987 struct GNUNET_RPS_CS_SeedMessage *in_msg;
988 struct GNUNET_PeerIdentity *peers;
991 if (sizeof (struct GNUNET_RPS_CS_SeedMessage) < ntohs (message->size))
994 GNUNET_SERVER_receive_done (client,
997 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
998 if ((ntohs (message->size) - sizeof (struct GNUNET_RPS_CS_SeedMessage)) /
999 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1001 GNUNET_break_op (0);
1002 GNUNET_SERVER_receive_done (client,
1006 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
1007 peers = (struct GNUNET_PeerIdentity *) &message[1];
1009 for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
1010 RPS_sampler_update (prot_sampler, &peers[i]);
1011 RPS_sampler_update (client_sampler, &peers[i]);
1013 GNUNET_SERVER_receive_done (client,
1019 * Handle a PUSH message from another peer.
1021 * Check the proof of work and store the PeerID
1022 * in the temporary list for pushed PeerIDs.
1024 * @param cls Closure
1025 * @param channel The channel the PUSH was received over
1026 * @param channel_ctx The context associated with this channel
1027 * @param msg The message header
1030 handle_peer_push (void *cls,
1031 struct GNUNET_CADET_Channel *channel,
1033 const struct GNUNET_MessageHeader *msg)
1035 const struct GNUNET_PeerIdentity *peer;
1037 // (check the proof of work)
1039 peer = (const struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
1040 // FIXME wait for cadet to change this function
1041 LOG (GNUNET_ERROR_TYPE_DEBUG, "PUSH received (%s)\n", GNUNET_i2s (peer));
1043 /* Add the sending peer to the push_list */
1044 if (GNUNET_NO == in_arr (push_list, pull_list_size, peer))
1045 GNUNET_array_append (push_list, push_list_size, *peer);
1051 * Handle PULL REQUEST request message from another peer.
1053 * Reply with the gossip list of PeerIDs.
1055 * @param cls Closure
1056 * @param channel The channel the PUSH was received over
1057 * @param channel_ctx The context associated with this channel
1058 * @param msg The message header
1061 handle_peer_pull_request (void *cls,
1062 struct GNUNET_CADET_Channel *channel,
1064 const struct GNUNET_MessageHeader *msg)
1066 struct GNUNET_PeerIdentity *peer;
1068 struct GNUNET_MQ_Handle *mq;
1069 struct GNUNET_MQ_Envelope *ev;
1070 struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
1073 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel,
1074 GNUNET_CADET_OPTION_PEER);
1075 // FIXME wait for cadet to change this function
1077 /* Compute actual size */
1078 send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
1079 gossip_list_size * sizeof (struct GNUNET_PeerIdentity);
1081 if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
1082 /* Compute number of peers to send
1083 * If too long, simply truncate */
1084 send_size = (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
1085 sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1086 sizeof (struct GNUNET_PeerIdentity);
1088 send_size = gossip_list_size;
1090 LOG (GNUNET_ERROR_TYPE_DEBUG,
1091 "PULL REQUEST from peer %s received, going to send %u peers\n",
1092 GNUNET_i2s (peer), send_size);
1094 mq = get_mq (peer_map, peer);
1096 ev = GNUNET_MQ_msg_extra (out_msg,
1097 send_size * sizeof (struct GNUNET_PeerIdentity),
1098 GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
1099 //out_msg->num_peers = htonl (gossip_list_size);
1100 out_msg->num_peers = htonl (send_size);
1101 memcpy (&out_msg[1], gossip_list,
1102 send_size * sizeof (struct GNUNET_PeerIdentity));
1104 GNUNET_MQ_send (mq, ev);
1110 * Handle PULL REPLY message from another peer.
1112 * Check whether we sent a corresponding request and
1113 * whether this reply is the first one.
1115 * @param cls Closure
1116 * @param channel The channel the PUSH was received over
1117 * @param channel_ctx The context associated with this channel
1118 * @param msg The message header
1121 handle_peer_pull_reply (void *cls,
1122 struct GNUNET_CADET_Channel *channel,
1124 const struct GNUNET_MessageHeader *msg)
1126 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
1128 struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
1129 struct GNUNET_PeerIdentity *peers;
1130 struct PeerContext *peer_ctx;
1131 struct GNUNET_PeerIdentity *sender;
1132 struct PeerContext *sender_ctx;
1133 struct PeerOutstandingOp out_op;
1136 if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
1138 GNUNET_break_op (0); // At the moment our own implementation seems to break that.
1139 return GNUNET_SYSERR;
1141 in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
1142 if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) / sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1144 LOG (GNUNET_ERROR_TYPE_ERROR, "message says it sends %" PRIu64 " peers, have space for %i peers\n",
1145 ntohl (in_msg->num_peers),
1146 (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) / sizeof (struct GNUNET_PeerIdentity));
1147 GNUNET_break_op (0);
1148 return GNUNET_SYSERR;
1151 sender = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1152 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1153 // Guess simply casting isn't the nicest way...
1154 // FIXME wait for cadet to change this function
1155 sender_ctx = get_peer_ctx (peer_map, sender);
1157 if (0 == get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
1159 GNUNET_break_op (0);
1163 peers = (struct GNUNET_PeerIdentity *) &msg[1];
1164 for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
1166 peer_ctx = get_peer_ctx (peer_map, &peers[i]);
1167 if ((0 != (peer_ctx->peer_flags && LIVING)) ||
1168 NULL != peer_ctx->recv_channel)
1170 if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i]))
1171 GNUNET_array_append (pull_list, pull_list_size, peers[i]);
1173 else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
1175 out_op.op = insert_in_pull_list;
1176 out_op.op_cls = NULL;
1177 GNUNET_array_append (peer_ctx->outstanding_ops,
1178 peer_ctx->num_outstanding_ops,
1183 unset_peer_flag (sender_ctx, PULL_REPLY_PENDING);
1184 rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, sender);
1191 * Send out PUSHes and PULLs.
1193 * This is executed regylary.
1196 do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1198 LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round\n");
1201 unsigned int *permut;
1202 unsigned int n_peers; /* Number of peers we send pushes/pulls to */
1203 struct GNUNET_MQ_Envelope *ev;
1204 struct GNUNET_PeerIdentity peer;
1205 struct GNUNET_PeerIdentity *tmp_peer;
1206 struct GNUNET_MQ_Handle *mq;
1208 LOG (GNUNET_ERROR_TYPE_DEBUG,
1209 "Printing gossip list:\n");
1210 for (i = 0 ; i < gossip_list_size ; i++)
1211 LOG (GNUNET_ERROR_TYPE_DEBUG,
1212 "\t%s\n", GNUNET_i2s (&gossip_list[i]));
1213 // TODO log lists, ...
1215 /* Would it make sense to have one shuffeled gossip list and then
1216 * to send PUSHes to first alpha peers, PULL requests to next beta peers and
1217 * use the rest to update sampler?
1218 * in essence get random peers with consumption */
1221 if (0 < gossip_list_size)
1223 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
1224 (unsigned int) gossip_list_size);
1225 n_peers = ceil (alpha * gossip_list_size);
1226 LOG (GNUNET_ERROR_TYPE_DEBUG,
1227 "Going to send pushes to %u ceil (%f * %u) peers.\n",
1228 n_peers, alpha, gossip_list_size);
1229 for (i = 0 ; i < n_peers ; i++)
1231 peer = gossip_list[permut[i]];
1232 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
1233 { // FIXME if this fails schedule/loop this for later
1234 LOG (GNUNET_ERROR_TYPE_DEBUG,
1235 "Sending PUSH to peer %s of gossiped list.\n",
1236 GNUNET_i2s (&peer));
1238 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
1239 mq = get_mq (peer_map, &peer);
1240 GNUNET_MQ_send (mq, ev);
1243 GNUNET_free (permut);
1247 /* Send PULL requests */
1248 //permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list->size);
1249 n_peers = ceil (beta * gossip_list_size);
1250 LOG (GNUNET_ERROR_TYPE_DEBUG,
1251 "Going to send pulls to %u ceil (%f * %u) peers.\n",
1252 n_peers, beta, gossip_list_size);
1253 for (i = 0 ; i < n_peers ; i++)
1255 tmp_peer = get_rand_peer_ignore_list (gossip_list, gossip_list_size,
1256 pending_pull_reply_list, pending_pull_reply_list_size);
1257 if (NULL != tmp_peer)
1260 GNUNET_free (tmp_peer);
1262 GNUNET_array_append (pending_pull_reply_list, pending_pull_reply_list_size, peer);
1264 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer))
1265 { // FIXME if this fails schedule/loop this for later
1266 LOG (GNUNET_ERROR_TYPE_DEBUG,
1267 "Sending PULL request to peer %s of gossiped list.\n",
1268 GNUNET_i2s (&peer));
1270 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
1271 mq = get_mq (peer_map, &peer);
1272 GNUNET_MQ_send (mq, ev);
1278 /* Update gossip list */
1281 if ( push_list_size <= alpha * gossip_list_size &&
1282 push_list_size != 0 &&
1283 pull_list_size != 0 )
1285 LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the gossip list.\n");
1287 uint32_t first_border;
1288 uint32_t second_border;
1290 first_border = ceil (alpha * sampler_size_est_need);
1291 second_border = first_border + ceil (beta * sampler_size_est_need);
1293 GNUNET_array_grow (gossip_list, gossip_list_size, second_border);
1295 for (i = 0 ; i < first_border ; i++)
1296 { // TODO use RPS_sampler_get_n_rand_peers
1297 /* Update gossip list with peers received through PUSHes */
1298 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1300 gossip_list[i] = push_list[r_index];
1301 // TODO change the peer_flags accordingly
1304 for (i = first_border ; i < second_border ; i++)
1306 /* Update gossip list with peers received through PULLs */
1307 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1309 gossip_list[i] = pull_list[r_index];
1310 // TODO change the peer_flags accordingly
1313 for (i = second_border ; i < sampler_size_est_need ; i++)
1315 /* Update gossip list with peers from history */
1316 RPS_sampler_get_n_rand_peers (prot_sampler, hist_update, NULL, 1, GNUNET_NO);
1317 num_hist_update_tasks++;
1318 // TODO change the peer_flags accordingly
1324 LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the gossip list.\n");
1326 // TODO independent of that also get some peers from CADET_get_peers()?
1329 /* Update samplers */
1331 for ( i = 0 ; i < push_list_size ; i++ )
1333 RPS_sampler_update (prot_sampler, &push_list[i]);
1334 RPS_sampler_update (client_sampler, &push_list[i]);
1335 // TODO set in_flag?
1338 for ( i = 0 ; i < pull_list_size ; i++ )
1340 RPS_sampler_update (prot_sampler, &push_list[i]);
1341 RPS_sampler_update (client_sampler, &push_list[i]);
1342 // TODO set in_flag?
1346 /* Empty push/pull lists */
1347 GNUNET_array_grow (push_list, push_list_size, 0);
1348 GNUNET_array_grow (pull_list, pull_list_size, 0);
1350 struct GNUNET_TIME_Relative time_next_round;
1351 struct GNUNET_TIME_Relative half_round_interval;
1352 unsigned int rand_delay;
1354 /* Compute random time value between .5 * round_interval and 1.5 *round_interval */
1355 half_round_interval = GNUNET_TIME_relative_divide (round_interval, 2);
1359 * Compute random value between (0 and 1) * round_interval
1360 * via multiplying round_interval with a 'fraction' (0 to value)/value
1362 rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT_MAX/10);
1363 time_next_round = GNUNET_TIME_relative_multiply (round_interval, rand_delay);
1364 time_next_round = GNUNET_TIME_relative_divide (time_next_round, UINT_MAX/10);
1365 time_next_round = GNUNET_TIME_relative_add (time_next_round, half_round_interval);
1366 } while (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == time_next_round.rel_value_us);
1368 /* Schedule next round */
1369 do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_round, NULL);
1370 LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
1375 * Open a connection to given peer and store channel and mq.
1378 insertCB (void *cls, struct RPS_Sampler *sampler,
1379 const struct GNUNET_PeerIdentity *id)
1381 // We open a channel to be notified when this peer goes down.
1382 (void) get_channel (peer_map, id);
1387 * Close the connection to given peer and delete channel and mq
1388 * if the peer is not anymore in the sampler.
1391 removeCB (void *cls, struct RPS_Sampler *sampler,
1392 const struct GNUNET_PeerIdentity *id)
1395 struct PeerContext *ctx;
1397 s = RPS_sampler_count_id (sampler, id);
1400 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, id))
1402 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, id);
1403 if (NULL != ctx->send_channel)
1405 if (NULL != ctx->mq)
1407 GNUNET_MQ_destroy (ctx->mq);
1409 // may already be freed at shutdown of cadet
1410 //GNUNET_CADET_channel_destroy (ctx->send_channel);
1412 // TODO cleanup peer
1413 (void) GNUNET_CONTAINER_multipeermap_remove_all (peer_map, id);
1419 rps_start (struct GNUNET_SERVER_Handle *server);
1422 * This is called from GNUNET_CADET_get_peers().
1424 * It is called on every peer(ID) that cadet somehow has contact with.
1425 * We use those to initialise the sampler.
1428 init_peer_cb (void *cls,
1429 const struct GNUNET_PeerIdentity *peer,
1430 int tunnel, // "Do we have a tunnel towards this peer?"
1431 unsigned int n_paths, // "Number of known paths towards this peer"
1432 unsigned int best_path) // "How long is the best path?
1433 // (0 = unknown, 1 = ourselves, 2 = neighbor)"
1435 struct GNUNET_SERVER_Handle *server;
1436 struct PeerOutstandingOp out_op;
1437 struct PeerContext *peer_ctx;
1439 server = (struct GNUNET_SERVER_Handle *) cls;
1442 LOG (GNUNET_ERROR_TYPE_DEBUG,
1443 "Got peer %s (at %p) from CADET (gossip_list_size: %u)\n",
1444 GNUNET_i2s (peer), peer, gossip_list_size);
1446 // maybe create a function for that
1447 peer_ctx = get_peer_ctx (peer_map, peer);
1448 // FIXME this peer might already be marked as LIVE
1449 if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
1451 out_op.op = insert_in_sampler;
1452 out_op.op_cls = NULL;
1453 GNUNET_array_append (peer_ctx->outstanding_ops,
1454 peer_ctx->num_outstanding_ops,
1458 if (GNUNET_NO == insert_in_gossip_list_scheduled (peer_ctx))
1460 out_op.op = insert_in_gossip_list;
1461 out_op.op_cls = NULL;
1462 GNUNET_array_append (peer_ctx->outstanding_ops,
1463 peer_ctx->num_outstanding_ops,
1467 /* Trigger livelyness test on peer */
1468 (void) get_channel (peer_map, peer);
1470 // send push/pull to each of those peers?
1478 * Callback used to clean the multipeermap.
1481 peer_remove_cb (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
1483 struct PeerContext *peer_ctx;
1484 const struct GNUNET_CADET_Channel *ch = (const struct GNUNET_CADET_Channel *) cls;
1485 struct GNUNET_CADET_Channel *recv;
1486 struct GNUNET_CADET_Channel *send;
1488 peer_ctx = (struct PeerContext *) value;
1490 if (0 != peer_ctx->num_outstanding_ops)
1491 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
1493 if (NULL != peer_ctx->mq)
1494 GNUNET_MQ_destroy (peer_ctx->mq);
1496 if (NULL != peer_ctx->is_live_task)
1498 GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
1499 peer_ctx->is_live_task = NULL;
1502 send = peer_ctx->send_channel;
1503 peer_ctx->send_channel = NULL;
1504 recv = peer_ctx->send_channel;
1505 peer_ctx->recv_channel = NULL;
1510 GNUNET_CADET_channel_destroy (send);
1516 GNUNET_CADET_channel_destroy (recv);
1519 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
1520 LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
1522 GNUNET_free (peer_ctx);
1529 * Task run during shutdown.
1535 shutdown_task (void *cls,
1536 const struct GNUNET_SCHEDULER_TaskContext *tc)
1538 LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
1540 if ( NULL != do_round_task )
1542 GNUNET_SCHEDULER_cancel (do_round_task);
1543 do_round_task = NULL;
1548 if (GNUNET_SYSERR == GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
1549 LOG (GNUNET_ERROR_TYPE_WARNING,
1550 "Iterating over peers to disconnect from them was cancelled\n");
1553 GNUNET_NSE_disconnect (nse);
1554 GNUNET_CADET_disconnect (cadet_handle);
1555 RPS_sampler_destroy (prot_sampler);
1556 RPS_sampler_destroy (client_sampler);
1557 GNUNET_break (0 == GNUNET_CONTAINER_multipeermap_size (peer_map));
1558 GNUNET_CONTAINER_multipeermap_destroy (peer_map);
1559 GNUNET_array_grow (gossip_list, gossip_list_size, 0);
1560 GNUNET_array_grow (push_list, push_list_size, 0);
1561 GNUNET_array_grow (pull_list, pull_list_size, 0);
1566 * A client disconnected. Remove all of its data structure entries.
1568 * @param cls closure, NULL
1569 * @param client identification of the client
1572 handle_client_disconnect (void *cls,
1573 struct GNUNET_SERVER_Client * client)
1579 * Handle the channel a peer opens to us.
1581 * @param cls The closure
1582 * @param channel The channel the peer wants to establish
1583 * @param initiator The peer's peer ID
1584 * @param port The port the channel is being established over
1585 * @param options Further options
1588 handle_inbound_channel (void *cls,
1589 struct GNUNET_CADET_Channel *channel,
1590 const struct GNUNET_PeerIdentity *initiator,
1592 enum GNUNET_CADET_ChannelOption options)
1594 struct PeerContext *ctx;
1596 LOG (GNUNET_ERROR_TYPE_DEBUG,
1597 "New channel was established to us (Peer %s).\n",
1598 GNUNET_i2s (initiator));
1600 GNUNET_assert (NULL != channel);
1602 // we might not even store the recv_channel
1604 ctx = get_peer_ctx (peer_map, initiator);
1605 if (NULL != ctx->recv_channel)
1607 ctx->recv_channel = channel;
1610 ctx->peer_flags |= LIVING;
1612 //ctx->peer_flags = IN_OTHER_GOSSIP_LIST;
1615 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, initiator, ctx,
1616 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1618 return NULL; // TODO
1623 * This is called when a remote peer destroys a channel.
1625 * @param cls The closure
1626 * @param channel The channel being closed
1627 * @param channel_ctx The context associated with this channel
1630 cleanup_channel (void *cls,
1631 const struct GNUNET_CADET_Channel *channel,
1634 struct GNUNET_PeerIdentity *peer;
1635 struct PeerContext *peer_ctx;
1637 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1638 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1639 // Guess simply casting isn't the nicest way...
1640 // FIXME wait for cadet to change this function
1641 LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up channel to peer %s\n",
1644 RPS_sampler_reinitialise_by_value (prot_sampler, peer);
1645 RPS_sampler_reinitialise_by_value (client_sampler, peer);
1647 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
1649 peer_ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
1651 if (NULL == peer_ctx) /* It could have been removed by shutdown_task */
1654 /* Somwewhat {ab,re}use the iterator function */
1655 /* Cast to void is ok, because it's used as void in peer_remove_cb */
1656 (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
1662 * Actually start the service.
1665 rps_start (struct GNUNET_SERVER_Handle *server)
1667 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1668 {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
1669 sizeof (struct GNUNET_RPS_CS_RequestMessage)},
1670 {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
1674 GNUNET_SERVER_add_handlers (server, handlers);
1675 GNUNET_SERVER_disconnect_notify (server,
1676 &handle_client_disconnect,
1678 LOG (GNUNET_ERROR_TYPE_DEBUG, "Ready to receive requests from clients\n");
1681 num_hist_update_tasks = 0;
1683 do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
1684 LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
1686 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1693 * Process statistics requests.
1695 * @param cls closure
1696 * @param server the initialized server
1697 * @param c configuration to use
1701 struct GNUNET_SERVER_Handle *server,
1702 const struct GNUNET_CONFIGURATION_Handle *c)
1704 // TODO check what this does -- copied from gnunet-boss
1705 // - seems to work as expected
1706 GNUNET_log_setup ("rps", GNUNET_error_type_to_string (GNUNET_ERROR_TYPE_DEBUG), NULL);
1711 GNUNET_CRYPTO_get_peer_identity (cfg, &own_identity); // TODO check return value
1712 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1713 "STARTING SERVICE (rps) for peer [%s]\n",
1714 GNUNET_i2s (&own_identity));
1717 /* Get time interval from the configuration */
1718 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "RPS",
1722 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read ROUNDINTERVAL from config\n");
1723 GNUNET_SCHEDULER_shutdown ();
1727 /* Get initial size of sampler/gossip list from the configuration */
1728 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (cfg, "RPS",
1730 (long long unsigned int *) &sampler_size_est_need))
1732 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read INITSIZE from config\n");
1733 GNUNET_SCHEDULER_shutdown ();
1736 LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
1742 /* connect to NSE */
1743 nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
1744 // TODO check whether that was successful
1745 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to NSE\n");
1751 peer_map = GNUNET_CONTAINER_multipeermap_create (sampler_size_est_need, GNUNET_NO);
1754 /* Initialise cadet */
1755 static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
1756 {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH ,
1757 sizeof (struct GNUNET_MessageHeader)},
1758 {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
1759 sizeof (struct GNUNET_MessageHeader)},
1760 {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
1764 const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
1765 cadet_handle = GNUNET_CADET_connect (cfg,
1767 &handle_inbound_channel,
1771 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to CADET\n");
1774 /* Initialise sampler */
1775 struct GNUNET_TIME_Relative half_round_interval;
1776 struct GNUNET_TIME_Relative max_round_interval;
1778 half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
1779 max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
1781 prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
1782 insertCB, NULL, removeCB, NULL);
1783 client_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
1784 insertCB, NULL, removeCB, NULL);
1786 /* Initialise push and pull maps */
1791 pending_pull_reply_list = NULL;
1792 pending_pull_reply_list_size = 0;
1795 LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
1796 GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, server);
1798 // TODO send push/pull to each of those peers?
1803 * The main function for the rps service.
1805 * @param argc number of arguments from the command line
1806 * @param argv command line arguments
1807 * @return 0 ok, 1 on error
1810 main (int argc, char *const *argv)
1812 return (GNUNET_OK ==
1813 GNUNET_SERVICE_run (argc,
1816 GNUNET_SERVICE_OPTION_NONE,
1817 &run, NULL)) ? 0 : 1;
1820 /* end of gnunet-service-rps.c */