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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 ***********************************************************************/
188 /***********************************************************************
190 ***********************************************************************/
193 * Sampler used for the Brahms protocol itself.
195 static struct RPS_Sampler *prot_sampler;
198 * Sampler used for the clients.
200 static struct RPS_Sampler *client_sampler;
203 * Set of all peers to keep track of them.
205 static struct GNUNET_CONTAINER_MultiPeerMap *peer_map;
209 * The gossiped list of peers.
211 static struct GNUNET_PeerIdentity *gossip_list;
214 * Size of the gossiped list
216 //static unsigned int gossip_list_size;
217 static uint32_t gossip_list_size;
221 * The size of sampler we need to be able to satisfy the client's need of
224 static unsigned int sampler_size_client_need;
227 * The size of sampler we need to be able to satisfy the Brahms protocol's
228 * need of random peers.
230 * This is directly taken as the #gossip_list_size on update of the
233 * This is one minimum size the sampler grows to.
235 static unsigned int sampler_size_est_need;
239 * Percentage of total peer number in the gossip list
240 * to send random PUSHes to
245 * Percentage of total peer number in the gossip list
246 * to send random PULLs to
251 * The percentage gamma of history updates.
252 * Simply 1 - alpha - beta
257 * Identifier for the main task that runs periodically.
259 static struct GNUNET_SCHEDULER_Task *do_round_task;
262 * Time inverval the do_round task runs in.
264 static struct GNUNET_TIME_Relative round_interval;
269 * List to store peers received through pushes temporary.
271 * TODO -> multipeermap
273 static struct GNUNET_PeerIdentity *push_list;
276 * Size of the push_list;
278 static unsigned int push_list_size;
279 //size_t push_list_size;
282 * List to store peers received through pulls temporary.
284 * TODO -> multipeermap
286 static struct GNUNET_PeerIdentity *pull_list;
289 * Size of the pull_list;
291 static unsigned int pull_list_size;
292 //size_t pull_list_size;
298 static struct GNUNET_NSE_Handle *nse;
303 static struct GNUNET_CADET_Handle *cadet_handle;
309 * Only needed in the beginning to check how many of the 64 deltas
312 static unsigned int req_counter;
315 * Time of the last request we received.
317 * Used to compute the expected request rate.
319 static struct GNUNET_TIME_Absolute last_request;
322 * Size of #request_deltas.
324 #define REQUEST_DELTAS_SIZE 64
325 static unsigned int request_deltas_size = REQUEST_DELTAS_SIZE;
328 * Last 64 deltas between requests
330 static struct GNUNET_TIME_Relative request_deltas[REQUEST_DELTAS_SIZE];
333 * The prediction of the rate of requests
335 static struct GNUNET_TIME_Relative request_rate;
339 * List with the peers we sent requests to.
341 struct GNUNET_PeerIdentity *pending_pull_reply_list;
344 * Size of #pending_pull_reply_list.
346 uint32_t pending_pull_reply_list_size;
350 * Number of history update tasks.
352 uint32_t num_hist_update_tasks;
355 /***********************************************************************
357 ***********************************************************************/
360 /***********************************************************************
362 ***********************************************************************/
365 * Check if peer is already in peer array.
368 in_arr (const struct GNUNET_PeerIdentity *array,
369 unsigned int arr_size,
370 const struct GNUNET_PeerIdentity *peer)
372 GNUNET_assert (NULL != peer);
377 GNUNET_assert (NULL != array);
382 while (0 != GNUNET_CRYPTO_cmp_peer_identity (&array[i], peer) &&
393 * Remove peer from list.
396 rem_from_list (struct GNUNET_PeerIdentity *peer_list,
397 unsigned int *list_size,
398 const struct GNUNET_PeerIdentity *peer)
402 for ( i = 0 ; i < *list_size ; i++ )
404 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&peer_list[i], peer))
406 if (i < *list_size -1)
407 { /* Not at the last entry -- shift peers left */
408 memcpy (&peer_list[i], &peer_list[i +1],
409 (*list_size - i -1) * sizeof (struct GNUNET_PeerIdentity));
411 /* Remove last entry (should be now useless PeerID) */
412 GNUNET_array_grow (peer_list, *list_size, *list_size -1);
418 * Get random peer from the given list but don't return one from the @a ignore_list.
420 struct GNUNET_PeerIdentity *
421 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list,
423 const struct GNUNET_PeerIdentity *ignore_list,
424 uint32_t ignore_size)
428 struct GNUNET_PeerIdentity *tmp_peer_list;
429 struct GNUNET_PeerIdentity *peer;
431 GNUNET_assert (NULL != peer_list);
436 tmp_peer_list = NULL;
437 GNUNET_array_grow (tmp_peer_list, tmp_size, list_size);
438 memcpy (tmp_peer_list, peer_list, list_size * sizeof (struct GNUNET_PeerIdentity));
439 peer = GNUNET_new (struct GNUNET_PeerIdentity);
442 * Choose the r_index of the peer we want to return
443 * at random from the interval of the gossip list
445 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
447 *peer = tmp_peer_list[r_index];
449 while (in_arr (ignore_list, ignore_size, peer))
451 rem_from_list (tmp_peer_list, &tmp_size, peer);
460 * Choose the r_index of the peer we want to return
461 * at random from the interval of the gossip list
463 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
465 *peer = tmp_peer_list[r_index];
469 GNUNET_array_grow (tmp_peer_list, tmp_size, 0);
476 * Get the context of a peer. If not existing, create.
479 get_peer_ctx (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
480 const struct GNUNET_PeerIdentity *peer)
482 struct PeerContext *ctx;
484 if ( GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
486 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
490 ctx = GNUNET_new (struct PeerContext);
493 ctx->send_channel = NULL;
494 ctx->recv_channel = NULL;
495 ctx->outstanding_ops = NULL;
496 ctx->num_outstanding_ops = 0;
497 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
498 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
505 * Put random peer from sampler into the gossip list as history update.
508 hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
510 GNUNET_assert (1 == num_peers);
512 if (gossip_list_size < sampler_size_est_need)
513 GNUNET_array_append (gossip_list, gossip_list_size, *ids);
515 if (0 < num_hist_update_tasks)
516 num_hist_update_tasks--;
521 * Callback that is called when a channel was effectively established.
522 * This is given to ntfy_tmt_rdy and called when the channel was
523 * successfully established.
526 peer_is_live (void *cls, size_t size, void *buf)
528 struct PeerContext *ctx = cls;
529 struct GNUNET_PeerIdentity *peer;
530 struct PeerContext *peer_ctx;
536 ctx->is_live_task = NULL;
537 peer = &ctx->peer_id;
538 peer_ctx = get_peer_ctx (peer_map, peer);
539 peer_ctx->peer_flags |= LIVING;
541 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer %s is live\n", GNUNET_i2s (peer));
543 if (0 != peer_ctx->num_outstanding_ops)
544 { /* Call outstanding operations */
547 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
548 peer_ctx->outstanding_ops[i].op (peer_ctx->outstanding_ops[i].op_cls, peer);
549 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
552 //if (NULL != peer_ctx->is_live_task)
554 // GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
555 // peer_ctx->is_live_task = NULL; // needed?
562 * Get the channel of a peer. If not existing, create.
564 struct GNUNET_CADET_Channel *
565 get_channel (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
566 const struct GNUNET_PeerIdentity *peer)
568 struct PeerContext *ctx;
570 ctx = get_peer_ctx (peer_map, peer);
571 if (NULL == ctx->send_channel)
573 ctx->send_channel = GNUNET_CADET_channel_create (cadet_handle, NULL, peer,
574 GNUNET_RPS_CADET_PORT,
575 GNUNET_CADET_OPTION_RELIABLE);
577 if (NULL == ctx->recv_channel)
579 ctx->peer_id = *peer;
581 GNUNET_CADET_notify_transmit_ready (ctx->send_channel, GNUNET_NO,
582 GNUNET_TIME_UNIT_FOREVER_REL,
583 sizeof (struct GNUNET_MessageHeader),
587 // do I have to explicitly put it in the peer_map?
588 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
589 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
591 return ctx->send_channel;
596 * Get the message queue of a specific peer.
598 * If we already have a message queue open to this client,
599 * simply return it, otherways create one.
601 struct GNUNET_MQ_Handle *
602 get_mq (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
603 const struct GNUNET_PeerIdentity *peer_id)
605 struct PeerContext *ctx;
607 ctx = get_peer_ctx (peer_map, peer_id);
610 (void) get_channel (peer_map, peer_id);
611 ctx->mq = GNUNET_CADET_mq_create (ctx->send_channel);
612 //do I have to explicitly put it in the peer_map?
613 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer_id, ctx,
614 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
621 * Sum all time relatives of an array.
623 struct GNUNET_TIME_Relative
624 T_relative_sum (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
626 struct GNUNET_TIME_Relative sum;
629 sum = GNUNET_TIME_UNIT_ZERO;
630 for ( i = 0 ; i < arr_size ; i++ )
632 sum = GNUNET_TIME_relative_add (sum, rel_array[i]);
639 * Compute the average of given time relatives.
641 struct GNUNET_TIME_Relative
642 T_relative_avg (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
644 return GNUNET_TIME_relative_divide (T_relative_sum (rel_array, arr_size), arr_size);
649 * Insert PeerID in #pull_list
651 * Called once we know a peer is live.
654 insert_in_pull_list (void *cls, const struct GNUNET_PeerIdentity *peer)
656 if (GNUNET_NO == in_arr (pull_list, pull_list_size, peer))
657 GNUNET_array_append (pull_list, pull_list_size, *peer);
661 * Check whether #insert_in_pull_list was already scheduled
664 insert_in_pull_list_scheduled (const struct PeerContext *peer_ctx)
668 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
669 if (insert_in_pull_list == peer_ctx->outstanding_ops[i].op)
676 * Insert PeerID in #gossip_list
678 * Called once we know a peer is live.
681 insert_in_gossip_list (void *cls, const struct GNUNET_PeerIdentity *peer)
683 if (GNUNET_NO == in_arr (gossip_list, gossip_list_size, peer))
684 GNUNET_array_append (gossip_list, gossip_list_size, *peer);
688 * Check whether #insert_in_pull_list was already scheduled
691 insert_in_gossip_list_scheduled (const struct PeerContext *peer_ctx)
695 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
696 if (insert_in_gossip_list == peer_ctx->outstanding_ops[i].op)
703 * Update sampler with given PeerID.
706 insert_in_sampler (void *cls, const struct GNUNET_PeerIdentity *peer)
708 RPS_sampler_update (prot_sampler, peer);
709 RPS_sampler_update (client_sampler, peer);
714 * Check whether #insert_in_sampler was already scheduled
717 insert_in_sampler_scheduled (const struct PeerContext *peer_ctx)
721 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
722 if (insert_in_sampler== peer_ctx->outstanding_ops[i].op)
729 * Wrapper around #RPS_sampler_resize()
731 * If we do not have enough sampler elements, double current sampler size
732 * If we have more than enough sampler elements, halv current sampler size
735 resize_wrapper (struct RPS_Sampler *sampler, uint32_t new_size)
737 unsigned int sampler_size;
740 // TODO respect the min, max
741 sampler_size = RPS_sampler_get_size (sampler);
742 if (sampler_size > new_size * 4)
744 RPS_sampler_resize (sampler, sampler_size / 2);
746 else if (sampler_size < new_size)
748 RPS_sampler_resize (sampler, sampler_size * 2);
750 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
755 * Wrapper around #RPS_sampler_resize() resizing the client sampler
758 client_resize_wrapper ()
760 uint32_t bigger_size;
761 unsigned int sampler_size;
765 sampler_size = RPS_sampler_get_size (client_sampler);
767 if (sampler_size_est_need > sampler_size_client_need)
768 bigger_size = sampler_size_est_need;
770 bigger_size = sampler_size_client_need;
772 // TODO respect the min, max
773 resize_wrapper (client_sampler, bigger_size);
774 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
779 * Estimate request rate
781 * Called every time we receive a request from the client.
786 struct GNUNET_TIME_Relative max_round_duration;
788 if (request_deltas_size > req_counter)
790 if ( 1 < req_counter)
792 /* Shift last request deltas to the right */
793 memcpy (&request_deltas[1],
795 (req_counter - 1) * sizeof (struct GNUNET_TIME_Relative));
797 /* Add current delta to beginning */
799 GNUNET_TIME_absolute_get_difference (last_request,
800 GNUNET_TIME_absolute_get ());
801 request_rate = T_relative_avg (request_deltas, req_counter);
803 /* Compute the duration a round will maximally take */
805 GNUNET_TIME_relative_add (round_interval,
806 GNUNET_TIME_relative_divide (round_interval, 2));
808 /* Set the estimated size the sampler has to have to
809 * satisfy the current client request rate */
810 sampler_size_client_need =
811 max_round_duration.rel_value_us / request_rate.rel_value_us;
813 /* Resize the sampler */
814 client_resize_wrapper ();
816 last_request = GNUNET_TIME_absolute_get ();
820 /***********************************************************************
822 ***********************************************************************/
829 * Function called by NSE.
831 * Updates sizes of sampler list and gossip list and adapt those lists
835 nse_callback (void *cls, struct GNUNET_TIME_Absolute timestamp,
836 double logestimate, double std_dev)
839 //double scale; // TODO this might go gloabal/config
841 LOG (GNUNET_ERROR_TYPE_DEBUG,
842 "Received a ns estimate - logest: %f, std_dev: %f (old_size: %u)\n",
843 logestimate, std_dev, RPS_sampler_get_size (prot_sampler));
845 estimate = GNUNET_NSE_log_estimate_to_n (logestimate);
846 // GNUNET_NSE_log_estimate_to_n (logestimate);
847 estimate = pow (estimate, 1.0 / 3);
848 // TODO add if std_dev is a number
849 // estimate += (std_dev * scale);
850 if (2 < ceil (estimate))
852 LOG (GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
853 sampler_size_est_need = estimate;
855 LOG (GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
857 /* If the NSE has changed adapt the lists accordingly */
858 resize_wrapper (prot_sampler, sampler_size_est_need);
859 client_resize_wrapper ();
864 * Callback called once the requested PeerIDs are ready.
866 * Sends those to the requesting client.
868 void client_respond (void *cls,
869 struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
871 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler returned %" PRIX32 " peers\n", num_peers);
872 struct GNUNET_MQ_Envelope *ev;
873 struct GNUNET_RPS_CS_ReplyMessage *out_msg;
874 struct GNUNET_SERVER_Client *client;
875 uint32_t size_needed;
876 struct client_ctx *cli_ctx;
878 client = (struct GNUNET_SERVER_Client *) cls;
880 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
881 num_peers * sizeof (struct GNUNET_PeerIdentity);
883 GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= size_needed);
885 ev = GNUNET_MQ_msg_extra (out_msg,
886 num_peers * sizeof (struct GNUNET_PeerIdentity),
887 GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
888 out_msg->num_peers = htonl (num_peers);
892 num_peers * sizeof (struct GNUNET_PeerIdentity));
895 cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct client_ctx);
896 if ( NULL == cli_ctx ) {
897 cli_ctx = GNUNET_new (struct client_ctx);
898 cli_ctx->mq = GNUNET_MQ_queue_for_server_client (client);
899 GNUNET_SERVER_client_set_user_context (client, cli_ctx);
902 GNUNET_MQ_send (cli_ctx->mq, ev);
907 * Handle RPS request from the client.
910 * @param client identification of the client
911 * @param message the actual message
914 handle_client_request (void *cls,
915 struct GNUNET_SERVER_Client *client,
916 const struct GNUNET_MessageHeader *message)
918 struct GNUNET_RPS_CS_RequestMessage *msg;
920 uint32_t size_needed;
923 msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
925 num_peers = ntohl (msg->num_peers);
926 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
927 num_peers * sizeof (struct GNUNET_PeerIdentity);
929 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
931 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
935 for (i = 0 ; i < num_peers ; i++)
938 LOG (GNUNET_ERROR_TYPE_DEBUG, "Client requested %" PRIX32 " random peer(s).\n", num_peers);
940 RPS_sampler_get_n_rand_peers (client_sampler, client_respond,
941 client, num_peers, GNUNET_YES);
943 GNUNET_SERVER_receive_done (client,
949 * Handle seed from the client.
952 * @param client identification of the client
953 * @param message the actual message
956 handle_client_seed (void *cls,
957 struct GNUNET_SERVER_Client *client,
958 const struct GNUNET_MessageHeader *message)
960 struct GNUNET_RPS_CS_SeedMessage *in_msg;
961 struct GNUNET_PeerIdentity *peers;
964 if (sizeof (struct GNUNET_RPS_CS_SeedMessage) < ntohs (message->size))
967 GNUNET_SERVER_receive_done (client,
970 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
971 if ((ntohs (message->size) - sizeof (struct GNUNET_RPS_CS_SeedMessage)) /
972 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
975 GNUNET_SERVER_receive_done (client,
979 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
980 peers = (struct GNUNET_PeerIdentity *) &message[1];
982 for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
983 RPS_sampler_update (prot_sampler, &peers[i]);
984 RPS_sampler_update (client_sampler, &peers[i]);
986 GNUNET_SERVER_receive_done (client,
992 * Handle a PUSH message from another peer.
994 * Check the proof of work and store the PeerID
995 * in the temporary list for pushed PeerIDs.
998 * @param channel The channel the PUSH was received over
999 * @param channel_ctx The context associated with this channel
1000 * @param msg The message header
1003 handle_peer_push (void *cls,
1004 struct GNUNET_CADET_Channel *channel,
1006 const struct GNUNET_MessageHeader *msg)
1008 const struct GNUNET_PeerIdentity *peer;
1010 // (check the proof of work)
1012 peer = (const struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
1013 // FIXME wait for cadet to change this function
1014 LOG (GNUNET_ERROR_TYPE_DEBUG, "PUSH received (%s)\n", GNUNET_i2s (peer));
1016 /* Add the sending peer to the push_list */
1017 if (GNUNET_NO == in_arr (push_list, pull_list_size, peer))
1018 GNUNET_array_append (push_list, push_list_size, *peer);
1024 * Handle PULL REQUEST request message from another peer.
1026 * Reply with the gossip list of PeerIDs.
1028 * @param cls Closure
1029 * @param channel The channel the PUSH was received over
1030 * @param channel_ctx The context associated with this channel
1031 * @param msg The message header
1034 handle_peer_pull_request (void *cls,
1035 struct GNUNET_CADET_Channel *channel,
1037 const struct GNUNET_MessageHeader *msg)
1039 struct GNUNET_PeerIdentity *peer;
1041 struct GNUNET_MQ_Handle *mq;
1042 struct GNUNET_MQ_Envelope *ev;
1043 struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
1046 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel,
1047 GNUNET_CADET_OPTION_PEER);
1048 // FIXME wait for cadet to change this function
1050 /* Compute actual size */
1051 send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
1052 gossip_list_size * sizeof (struct GNUNET_PeerIdentity);
1054 if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
1055 /* Compute number of peers to send
1056 * If too long, simply truncate */
1057 send_size = (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
1058 sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1059 sizeof (struct GNUNET_PeerIdentity);
1061 send_size = gossip_list_size;
1063 LOG (GNUNET_ERROR_TYPE_DEBUG,
1064 "PULL REQUEST from peer %s received, going to send %u peers\n",
1065 GNUNET_i2s (peer), send_size);
1067 mq = get_mq (peer_map, peer);
1069 ev = GNUNET_MQ_msg_extra (out_msg,
1070 send_size * sizeof (struct GNUNET_PeerIdentity),
1071 GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
1072 //out_msg->num_peers = htonl (gossip_list_size);
1073 out_msg->num_peers = htonl (send_size);
1074 memcpy (&out_msg[1], gossip_list,
1075 send_size * sizeof (struct GNUNET_PeerIdentity));
1077 GNUNET_MQ_send (mq, ev);
1083 * Handle PULL REPLY message from another peer.
1085 * Check whether we sent a corresponding request and
1086 * whether this reply is the first one.
1088 * @param cls Closure
1089 * @param channel The channel the PUSH was received over
1090 * @param channel_ctx The context associated with this channel
1091 * @param msg The message header
1094 handle_peer_pull_reply (void *cls,
1095 struct GNUNET_CADET_Channel *channel,
1097 const struct GNUNET_MessageHeader *msg)
1099 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
1101 struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
1102 struct GNUNET_PeerIdentity *peers;
1103 struct PeerContext *peer_ctx;
1104 struct GNUNET_PeerIdentity *sender;
1105 struct PeerContext *sender_ctx;
1106 struct PeerOutstandingOp out_op;
1109 if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
1111 GNUNET_break_op (0); // At the moment our own implementation seems to break that.
1112 return GNUNET_SYSERR;
1114 in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
1115 if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) / sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1117 LOG (GNUNET_ERROR_TYPE_ERROR, "message says it sends %" PRIu64 " peers, have space for %i peers\n",
1118 ntohl (in_msg->num_peers),
1119 (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) / sizeof (struct GNUNET_PeerIdentity));
1120 GNUNET_break_op (0);
1121 return GNUNET_SYSERR;
1124 sender = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1125 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1126 // Guess simply casting isn't the nicest way...
1127 // FIXME wait for cadet to change this function
1128 sender_ctx = get_peer_ctx (peer_map, sender);
1130 if (0 == (sender_ctx->peer_flags || PULL_REPLY_PENDING))
1132 GNUNET_break_op (0);
1136 peers = (struct GNUNET_PeerIdentity *) &msg[1];
1137 for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
1139 peer_ctx = get_peer_ctx (peer_map, &peers[i]);
1140 if ((0 != (peer_ctx->peer_flags && LIVING)) ||
1141 NULL != peer_ctx->recv_channel)
1143 if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i]))
1144 GNUNET_array_append (pull_list, pull_list_size, peers[i]);
1146 else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
1148 out_op.op = insert_in_pull_list;
1149 out_op.op_cls = NULL;
1150 GNUNET_array_append (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, out_op);
1154 sender_ctx->peer_flags &= (~PULL_REPLY_PENDING);
1155 rem_from_list (pending_pull_reply_list, &pending_pull_reply_list_size, sender);
1162 * Send out PUSHes and PULLs.
1164 * This is executed regylary.
1167 do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1169 LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round\n");
1172 unsigned int *permut;
1173 unsigned int n_peers; /* Number of peers we send pushes/pulls to */
1174 struct GNUNET_MQ_Envelope *ev;
1175 struct GNUNET_PeerIdentity peer;
1176 struct GNUNET_PeerIdentity *tmp_peer;
1177 struct GNUNET_MQ_Handle *mq;
1179 LOG (GNUNET_ERROR_TYPE_DEBUG,
1180 "Printing gossip list:\n");
1181 for (i = 0 ; i < gossip_list_size ; i++)
1182 LOG (GNUNET_ERROR_TYPE_DEBUG,
1183 "\t%s\n", GNUNET_i2s (&gossip_list[i]));
1184 // TODO log lists, ...
1186 /* Would it make sense to have one shuffeled gossip list and then
1187 * to send PUSHes to first alpha peers, PULL requests to next beta peers and
1188 * use the rest to update sampler?
1189 * in essence get random peers with consumption */
1192 if (0 < gossip_list_size)
1194 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
1195 (unsigned int) gossip_list_size);
1196 n_peers = ceil (alpha * gossip_list_size);
1197 LOG (GNUNET_ERROR_TYPE_DEBUG,
1198 "Going to send pushes to %u ceil (%f * %u) peers.\n",
1199 n_peers, alpha, gossip_list_size);
1200 for (i = 0 ; i < n_peers ; i++)
1202 peer = gossip_list[permut[i]];
1203 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
1204 { // FIXME if this fails schedule/loop this for later
1205 LOG (GNUNET_ERROR_TYPE_DEBUG,
1206 "Sending PUSH to peer %s of gossiped list.\n",
1207 GNUNET_i2s (&peer));
1209 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
1210 mq = get_mq (peer_map, &peer);
1211 GNUNET_MQ_send (mq, ev);
1214 GNUNET_free (permut);
1218 /* Send PULL requests */
1219 //permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list->size);
1220 n_peers = ceil (beta * gossip_list_size);
1221 LOG (GNUNET_ERROR_TYPE_DEBUG,
1222 "Going to send pulls to %u ceil (%f * %u) peers.\n",
1223 n_peers, beta, gossip_list_size);
1224 for (i = 0 ; i < n_peers ; i++)
1226 tmp_peer = get_rand_peer_ignore_list (gossip_list, gossip_list_size,
1227 pending_pull_reply_list, pending_pull_reply_list_size);
1228 if (NULL != tmp_peer)
1231 GNUNET_free (tmp_peer);
1233 GNUNET_array_append (pending_pull_reply_list, pending_pull_reply_list_size, peer);
1235 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer))
1236 { // FIXME if this fails schedule/loop this for later
1237 LOG (GNUNET_ERROR_TYPE_DEBUG,
1238 "Sending PULL request to peer %s of gossiped list.\n",
1239 GNUNET_i2s (&peer));
1241 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
1242 mq = get_mq (peer_map, &peer);
1243 GNUNET_MQ_send (mq, ev);
1249 /* Update gossip list */
1252 if ( push_list_size <= alpha * gossip_list_size &&
1253 push_list_size != 0 &&
1254 pull_list_size != 0 )
1256 LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the gossip list.\n");
1258 uint32_t first_border;
1259 uint32_t second_border;
1261 first_border = ceil (alpha * sampler_size_est_need);
1262 second_border = first_border + ceil (beta * sampler_size_est_need);
1264 GNUNET_array_grow (gossip_list, gossip_list_size, second_border);
1266 for (i = 0 ; i < first_border ; i++)
1267 { // TODO use RPS_sampler_get_n_rand_peers
1268 /* Update gossip list with peers received through PUSHes */
1269 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1271 gossip_list[i] = push_list[r_index];
1272 // TODO change the peer_flags accordingly
1275 for (i = first_border ; i < second_border ; i++)
1277 /* Update gossip list with peers received through PULLs */
1278 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1280 gossip_list[i] = pull_list[r_index];
1281 // TODO change the peer_flags accordingly
1284 for (i = second_border ; i < sampler_size_est_need ; i++)
1286 /* Update gossip list with peers from history */
1287 RPS_sampler_get_n_rand_peers (prot_sampler, hist_update, NULL, 1, GNUNET_NO);
1288 num_hist_update_tasks++;
1289 // TODO change the peer_flags accordingly
1295 LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the gossip list.\n");
1297 // TODO independent of that also get some peers from CADET_get_peers()?
1300 /* Update samplers */
1302 for ( i = 0 ; i < push_list_size ; i++ )
1304 RPS_sampler_update (prot_sampler, &push_list[i]);
1305 RPS_sampler_update (client_sampler, &push_list[i]);
1306 // TODO set in_flag?
1309 for ( i = 0 ; i < pull_list_size ; i++ )
1311 RPS_sampler_update (prot_sampler, &push_list[i]);
1312 RPS_sampler_update (client_sampler, &push_list[i]);
1313 // TODO set in_flag?
1317 /* Empty push/pull lists */
1318 GNUNET_array_grow (push_list, push_list_size, 0);
1319 GNUNET_array_grow (pull_list, pull_list_size, 0);
1321 struct GNUNET_TIME_Relative time_next_round;
1322 struct GNUNET_TIME_Relative half_round_interval;
1323 unsigned int rand_delay;
1325 /* Compute random time value between .5 * round_interval and 1.5 *round_interval */
1326 half_round_interval = GNUNET_TIME_relative_divide (round_interval, 2);
1330 * Compute random value between (0 and 1) * round_interval
1331 * via multiplying round_interval with a 'fraction' (0 to value)/value
1333 rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT_MAX/10);
1334 time_next_round = GNUNET_TIME_relative_multiply (round_interval, rand_delay);
1335 time_next_round = GNUNET_TIME_relative_divide (time_next_round, UINT_MAX/10);
1336 time_next_round = GNUNET_TIME_relative_add (time_next_round, half_round_interval);
1337 } while (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == time_next_round.rel_value_us);
1339 /* Schedule next round */
1340 do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_round, NULL);
1341 LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
1346 * Open a connection to given peer and store channel and mq.
1349 insertCB (void *cls, struct RPS_Sampler *sampler,
1350 const struct GNUNET_PeerIdentity *id)
1352 // We open a channel to be notified when this peer goes down.
1353 (void) get_channel (peer_map, id);
1358 * Close the connection to given peer and delete channel and mq.
1361 removeCB (void *cls, struct RPS_Sampler *sampler,
1362 const struct GNUNET_PeerIdentity *id)
1365 struct PeerContext *ctx;
1367 s = RPS_sampler_count_id (sampler, id);
1370 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, id))
1372 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, id);
1373 if (NULL != ctx->send_channel)
1375 if (NULL != ctx->mq)
1377 GNUNET_MQ_destroy (ctx->mq);
1379 // may already be freed at shutdown of cadet
1380 //GNUNET_CADET_channel_destroy (ctx->send_channel);
1382 // TODO cleanup peer
1383 (void) GNUNET_CONTAINER_multipeermap_remove_all (peer_map, id);
1389 rps_start (struct GNUNET_SERVER_Handle *server);
1392 * This is called from GNUNET_CADET_get_peers().
1394 * It is called on every peer(ID) that cadet somehow has contact with.
1395 * We use those to initialise the sampler.
1398 init_peer_cb (void *cls,
1399 const struct GNUNET_PeerIdentity *peer,
1400 int tunnel, // "Do we have a tunnel towards this peer?"
1401 unsigned int n_paths, // "Number of known paths towards this peer"
1402 unsigned int best_path) // "How long is the best path?
1403 // (0 = unknown, 1 = ourselves, 2 = neighbor)"
1405 struct GNUNET_SERVER_Handle *server;
1406 struct PeerOutstandingOp out_op;
1407 struct PeerContext *peer_ctx;
1409 server = (struct GNUNET_SERVER_Handle *) cls;
1412 LOG (GNUNET_ERROR_TYPE_DEBUG,
1413 "Got peer %s (at %p) from CADET (gossip_list_size: %u)\n",
1414 GNUNET_i2s (peer), peer, gossip_list_size);
1416 // maybe create a function for that
1417 peer_ctx = get_peer_ctx (peer_map, peer);
1418 if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
1420 out_op.op = insert_in_sampler;
1421 GNUNET_array_append (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, out_op);
1424 if (GNUNET_NO == insert_in_gossip_list_scheduled (peer_ctx))
1426 out_op.op = insert_in_gossip_list;
1427 out_op.op_cls = NULL;
1428 GNUNET_array_append (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, out_op);
1431 /* Issue livelyness test on peer */
1432 (void) get_channel (peer_map, peer);
1434 // send push/pull to each of those peers?
1442 * Callback used to clean the multipeermap.
1445 peer_remove_cb (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
1447 struct PeerContext *peer_ctx;
1448 const struct GNUNET_CADET_Channel *ch = (const struct GNUNET_CADET_Channel *) cls;
1449 struct GNUNET_CADET_Channel *recv;
1450 struct GNUNET_CADET_Channel *send;
1452 peer_ctx = (struct PeerContext *) value;
1454 if (0 != peer_ctx->num_outstanding_ops)
1455 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
1457 if (NULL != peer_ctx->mq)
1458 GNUNET_MQ_destroy (peer_ctx->mq);
1460 if (NULL != peer_ctx->is_live_task)
1462 GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
1463 peer_ctx->is_live_task = NULL;
1466 send = peer_ctx->send_channel;
1467 peer_ctx->send_channel = NULL;
1468 recv = peer_ctx->send_channel;
1469 peer_ctx->recv_channel = NULL;
1474 GNUNET_CADET_channel_destroy (send);
1480 GNUNET_CADET_channel_destroy (recv);
1483 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
1484 LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
1486 GNUNET_free (peer_ctx);
1493 * Task run during shutdown.
1499 shutdown_task (void *cls,
1500 const struct GNUNET_SCHEDULER_TaskContext *tc)
1502 LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
1504 if ( NULL != do_round_task )
1506 GNUNET_SCHEDULER_cancel (do_round_task);
1507 do_round_task = NULL;
1512 if (GNUNET_SYSERR == GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
1513 LOG (GNUNET_ERROR_TYPE_WARNING,
1514 "Iterating over peers to disconnect from them was cancelled\n");
1517 GNUNET_NSE_disconnect (nse);
1518 GNUNET_CADET_disconnect (cadet_handle);
1519 RPS_sampler_destroy (prot_sampler);
1520 RPS_sampler_destroy (client_sampler);
1521 GNUNET_break (0 == GNUNET_CONTAINER_multipeermap_size (peer_map));
1522 GNUNET_CONTAINER_multipeermap_destroy (peer_map);
1523 GNUNET_array_grow (gossip_list, gossip_list_size, 0);
1524 GNUNET_array_grow (push_list, push_list_size, 0);
1525 GNUNET_array_grow (pull_list, pull_list_size, 0);
1530 * A client disconnected. Remove all of its data structure entries.
1532 * @param cls closure, NULL
1533 * @param client identification of the client
1536 handle_client_disconnect (void *cls,
1537 struct GNUNET_SERVER_Client * client)
1543 * Handle the channel a peer opens to us.
1545 * @param cls The closure
1546 * @param channel The channel the peer wants to establish
1547 * @param initiator The peer's peer ID
1548 * @param port The port the channel is being established over
1549 * @param options Further options
1552 handle_inbound_channel (void *cls,
1553 struct GNUNET_CADET_Channel *channel,
1554 const struct GNUNET_PeerIdentity *initiator,
1556 enum GNUNET_CADET_ChannelOption options)
1558 struct PeerContext *ctx;
1560 LOG (GNUNET_ERROR_TYPE_DEBUG,
1561 "New channel was established to us (Peer %s).\n",
1562 GNUNET_i2s (initiator));
1564 GNUNET_assert (NULL != channel);
1566 // we might not even store the recv_channel
1568 ctx = get_peer_ctx (peer_map, initiator);
1569 if (NULL != ctx->recv_channel)
1571 ctx->recv_channel = channel;
1574 ctx->peer_flags |= LIVING;
1576 //ctx->peer_flags = IN_OTHER_GOSSIP_LIST;
1579 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, initiator, ctx,
1580 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1582 return NULL; // TODO
1587 * This is called when a remote peer destroys a channel.
1589 * @param cls The closure
1590 * @param channel The channel being closed
1591 * @param channel_ctx The context associated with this channel
1594 cleanup_channel (void *cls,
1595 const struct GNUNET_CADET_Channel *channel,
1598 struct GNUNET_PeerIdentity *peer;
1599 struct PeerContext *peer_ctx;
1601 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1602 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1603 // Guess simply casting isn't the nicest way...
1604 // FIXME wait for cadet to change this function
1605 LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up channel to peer %s\n",
1608 RPS_sampler_reinitialise_by_value (prot_sampler, peer);
1609 RPS_sampler_reinitialise_by_value (client_sampler, peer);
1611 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
1613 peer_ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
1615 if (NULL == peer_ctx) /* It could have been removed by shutdown_task */
1618 /* Somwewhat {ab,re}use the iterator function */
1619 /* Cast to void is ok, because it's used as void in peer_remove_cb */
1620 (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
1626 * Actually start the service.
1629 rps_start (struct GNUNET_SERVER_Handle *server)
1631 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1632 {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
1633 sizeof (struct GNUNET_RPS_CS_RequestMessage)},
1634 {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
1638 GNUNET_SERVER_add_handlers (server, handlers);
1639 GNUNET_SERVER_disconnect_notify (server,
1640 &handle_client_disconnect,
1642 LOG (GNUNET_ERROR_TYPE_DEBUG, "Ready to receive requests from clients\n");
1645 num_hist_update_tasks = 0;
1647 do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
1648 LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
1650 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1657 * Process statistics requests.
1659 * @param cls closure
1660 * @param server the initialized server
1661 * @param c configuration to use
1665 struct GNUNET_SERVER_Handle *server,
1666 const struct GNUNET_CONFIGURATION_Handle *c)
1668 // TODO check what this does -- copied from gnunet-boss
1669 // - seems to work as expected
1670 GNUNET_log_setup ("rps", GNUNET_error_type_to_string (GNUNET_ERROR_TYPE_DEBUG), NULL);
1675 GNUNET_CRYPTO_get_peer_identity (cfg, &own_identity); // TODO check return value
1676 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1677 "STARTING SERVICE (rps) for peer [%s]\n",
1678 GNUNET_i2s (&own_identity));
1681 /* Get time interval from the configuration */
1682 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "RPS",
1686 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read ROUNDINTERVAL from config\n");
1687 GNUNET_SCHEDULER_shutdown ();
1691 /* Get initial size of sampler/gossip list from the configuration */
1692 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (cfg, "RPS",
1694 (long long unsigned int *) &sampler_size_est_need))
1696 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read INITSIZE from config\n");
1697 GNUNET_SCHEDULER_shutdown ();
1700 LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
1706 /* connect to NSE */
1707 nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
1708 // TODO check whether that was successful
1709 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to NSE\n");
1715 peer_map = GNUNET_CONTAINER_multipeermap_create (sampler_size_est_need, GNUNET_NO);
1718 /* Initialise cadet */
1719 static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
1720 {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH ,
1721 sizeof (struct GNUNET_MessageHeader)},
1722 {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
1723 sizeof (struct GNUNET_MessageHeader)},
1724 {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
1728 const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
1729 cadet_handle = GNUNET_CADET_connect (cfg,
1731 &handle_inbound_channel,
1735 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to CADET\n");
1738 /* Initialise sampler */
1739 struct GNUNET_TIME_Relative half_round_interval;
1740 struct GNUNET_TIME_Relative max_round_interval;
1742 half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
1743 max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
1745 prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
1746 insertCB, NULL, removeCB, NULL);
1747 client_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
1748 insertCB, NULL, removeCB, NULL);
1750 /* Initialise push and pull maps */
1755 pending_pull_reply_list = NULL;
1756 pending_pull_reply_list_size = 0;
1759 LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
1760 GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, server);
1762 // TODO send push/pull to each of those peers?
1767 * The main function for the rps service.
1769 * @param argc number of arguments from the command line
1770 * @param argv command line arguments
1771 * @return 0 ok, 1 on error
1774 main (int argc, char *const *argv)
1776 return (GNUNET_OK ==
1777 GNUNET_SERVICE_run (argc,
1780 GNUNET_SERVICE_OPTION_NONE,
1781 &run, NULL)) ? 0 : 1;
1784 /* end of gnunet-service-rps.c */