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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);
406 for (i = 0; i < arr_size ; i++)
407 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&array[i], peer))
414 * Print peerlist to log.
417 print_peer_list (struct GNUNET_PeerIdentity *list, unsigned int len)
421 LOG (GNUNET_ERROR_TYPE_DEBUG,
422 "Printing peer list of length %u at %p:\n",
425 for (i = 0 ; i < len ; i++)
427 LOG (GNUNET_ERROR_TYPE_DEBUG,
429 i, GNUNET_i2s (&list[i]));
435 * Remove peer from list.
438 rem_from_list (struct GNUNET_PeerIdentity **peer_list,
439 unsigned int *list_size,
440 const struct GNUNET_PeerIdentity *peer)
443 struct GNUNET_PeerIdentity *tmp;
447 LOG (GNUNET_ERROR_TYPE_DEBUG,
448 "Removing peer %s from list at %p\n",
451 print_peer_list (tmp, *list_size);
453 for ( i = 0 ; i < *list_size ; i++ )
455 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&tmp[i], peer))
457 if (i < *list_size -1)
458 { /* Not at the last entry -- shift peers left */
459 memcpy (&tmp[i], &tmp[i +1],
460 ((*list_size) - i -1) * sizeof (struct GNUNET_PeerIdentity));
462 /* Remove last entry (should be now useless PeerID) */
463 GNUNET_array_grow (tmp, *list_size, (*list_size) -1);
470 * Get random peer from the given list but don't return one from the @a ignore_list.
472 struct GNUNET_PeerIdentity *
473 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list,
475 const struct GNUNET_PeerIdentity *ignore_list,
476 uint32_t ignore_size)
480 struct GNUNET_PeerIdentity *tmp_peer_list;
481 struct GNUNET_PeerIdentity *peer;
483 GNUNET_assert (NULL != peer_list);
488 tmp_peer_list = NULL;
489 GNUNET_array_grow (tmp_peer_list, tmp_size, list_size);
490 memcpy (tmp_peer_list,
492 list_size * sizeof (struct GNUNET_PeerIdentity));
493 peer = GNUNET_new (struct GNUNET_PeerIdentity);
496 * Choose the r_index of the peer we want to return
497 * at random from the interval of the gossip list
499 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
501 *peer = tmp_peer_list[r_index];
503 while (in_arr (ignore_list, ignore_size, peer))
505 rem_from_list (&tmp_peer_list, &tmp_size, peer);
507 print_peer_list (tmp_peer_list, tmp_size);
516 * Choose the r_index of the peer we want to return
517 * at random from the interval of the gossip list
519 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
521 *peer = tmp_peer_list[r_index];
525 GNUNET_array_grow (tmp_peer_list, tmp_size, 0);
532 * Get the context of a peer. If not existing, create.
535 get_peer_ctx (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
536 const struct GNUNET_PeerIdentity *peer)
538 struct PeerContext *ctx;
540 if ( GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
542 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
546 ctx = GNUNET_new (struct PeerContext);
549 ctx->send_channel = NULL;
550 ctx->recv_channel = NULL;
551 ctx->outstanding_ops = NULL;
552 ctx->num_outstanding_ops = 0;
553 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
554 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
561 * Put random peer from sampler into the gossip list as history update.
564 hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
566 GNUNET_assert (1 == num_peers);
568 if (gossip_list_size < sampler_size_est_need)
569 GNUNET_array_append (gossip_list, gossip_list_size, *ids);
571 if (0 < num_hist_update_tasks)
572 num_hist_update_tasks--;
577 * Set the peer flag to living and call the outstanding operations on this peer.
580 peer_is_live (struct PeerContext *peer_ctx)
582 struct GNUNET_PeerIdentity *peer;
584 peer = &peer_ctx->peer_id;
585 set_peer_flag (peer_ctx, LIVING);
587 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer %s is live\n", GNUNET_i2s (peer));
589 if (0 != peer_ctx->num_outstanding_ops)
590 { /* Call outstanding operations */
593 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
594 peer_ctx->outstanding_ops[i].op (peer_ctx->outstanding_ops[i].op_cls, peer);
595 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
603 * Callback that is called when a channel was effectively established.
604 * This is given to ntfy_tmt_rdy and called when the channel was
605 * successfully established.
608 cadet_ntfy_tmt_rdy_cb (void *cls, size_t size, void *buf)
610 struct PeerContext *peer_ctx = (struct PeerContext *) cls;
614 peer_is_live (peer_ctx);
616 //if (NULL != peer_ctx->is_live_task)
618 // LOG (GNUNET_ERROR_TYPE_DEBUG,
619 // "Trying to cancle is_live_task for peer %s\n",
620 // GNUNET_i2s (&peer_ctx->peer_id));
621 // GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
622 // peer_ctx->is_live_task = NULL;
624 peer_ctx->is_live_task = NULL;
631 * Get the channel of a peer. If not existing, create.
633 struct GNUNET_CADET_Channel *
634 get_channel (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
635 const struct GNUNET_PeerIdentity *peer)
637 struct PeerContext *ctx;
639 LOG (GNUNET_ERROR_TYPE_DEBUG,
640 "Trying to establish channel to peer %s\n",
643 ctx = get_peer_ctx (peer_map, peer);
644 if (NULL == ctx->send_channel)
646 ctx->send_channel = GNUNET_CADET_channel_create (cadet_handle,
649 GNUNET_RPS_CADET_PORT,
650 GNUNET_CADET_OPTION_RELIABLE);
652 /* If we don't know whether peer is live,
653 * get notified when we know it is live. */
654 if (NULL == ctx->recv_channel
655 && NULL == ctx->is_live_task)
657 ctx->peer_id = *peer;
658 LOG (GNUNET_ERROR_TYPE_DEBUG,
659 "Get informed about peer %s getting live\n",
662 GNUNET_CADET_notify_transmit_ready (ctx->send_channel,
664 GNUNET_TIME_UNIT_FOREVER_REL,
665 sizeof (struct GNUNET_MessageHeader),
666 cadet_ntfy_tmt_rdy_cb,
669 // FIXME check whether this is NULL
671 // do I have to explicitly put it in the peer_map?
672 (void) GNUNET_CONTAINER_multipeermap_put
676 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
678 return ctx->send_channel;
683 * Get the message queue of a specific peer.
685 * If we already have a message queue open to this client,
686 * simply return it, otherways create one.
688 struct GNUNET_MQ_Handle *
689 get_mq (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
690 const struct GNUNET_PeerIdentity *peer_id)
692 struct PeerContext *peer_ctx;
694 peer_ctx = get_peer_ctx (peer_map, peer_id);
696 GNUNET_assert (NULL == peer_ctx->is_live_task);
698 if (NULL == peer_ctx->mq)
700 (void) get_channel (peer_map, peer_id);
701 peer_ctx->mq = GNUNET_CADET_mq_create (peer_ctx->send_channel);
702 //do I have to explicitly put it in the peer_map?
703 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer_id, peer_ctx,
704 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
711 * Sum all time relatives of an array.
713 struct GNUNET_TIME_Relative
714 T_relative_sum (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
716 struct GNUNET_TIME_Relative sum;
719 sum = GNUNET_TIME_UNIT_ZERO;
720 for ( i = 0 ; i < arr_size ; i++ )
722 sum = GNUNET_TIME_relative_add (sum, rel_array[i]);
729 * Compute the average of given time relatives.
731 struct GNUNET_TIME_Relative
732 T_relative_avg (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
734 return GNUNET_TIME_relative_divide (T_relative_sum (rel_array, arr_size), arr_size);
739 * Insert PeerID in #pull_list
741 * Called once we know a peer is live.
744 insert_in_pull_list (void *cls, const struct GNUNET_PeerIdentity *peer)
746 if (GNUNET_NO == in_arr (pull_list, pull_list_size, peer))
747 GNUNET_array_append (pull_list, pull_list_size, *peer);
751 * Check whether #insert_in_pull_list was already scheduled
754 insert_in_pull_list_scheduled (const struct PeerContext *peer_ctx)
758 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
759 if (insert_in_pull_list == peer_ctx->outstanding_ops[i].op)
766 * Insert PeerID in #gossip_list
768 * Called once we know a peer is live.
771 insert_in_gossip_list (void *cls, const struct GNUNET_PeerIdentity *peer)
773 if (GNUNET_NO == in_arr (gossip_list, gossip_list_size, peer))
774 GNUNET_array_append (gossip_list, gossip_list_size, *peer);
778 * Check whether #insert_in_pull_list was already scheduled
781 insert_in_gossip_list_scheduled (const struct PeerContext *peer_ctx)
785 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
786 if (insert_in_gossip_list == peer_ctx->outstanding_ops[i].op)
793 * Update sampler with given PeerID.
796 insert_in_sampler (void *cls, const struct GNUNET_PeerIdentity *peer)
798 RPS_sampler_update (prot_sampler, peer);
799 RPS_sampler_update (client_sampler, peer);
804 * Check whether #insert_in_sampler was already scheduled
807 insert_in_sampler_scheduled (const struct PeerContext *peer_ctx)
811 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
812 if (insert_in_sampler== peer_ctx->outstanding_ops[i].op)
819 * Wrapper around #RPS_sampler_resize()
821 * If we do not have enough sampler elements, double current sampler size
822 * If we have more than enough sampler elements, halv current sampler size
825 resize_wrapper (struct RPS_Sampler *sampler, uint32_t new_size)
827 unsigned int sampler_size;
830 // TODO respect the min, max
831 sampler_size = RPS_sampler_get_size (sampler);
832 if (sampler_size > new_size * 4)
834 RPS_sampler_resize (sampler, sampler_size / 2);
836 else if (sampler_size < new_size)
838 RPS_sampler_resize (sampler, sampler_size * 2);
840 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
845 * Wrapper around #RPS_sampler_resize() resizing the client sampler
848 client_resize_wrapper ()
850 uint32_t bigger_size;
851 unsigned int sampler_size;
855 sampler_size = RPS_sampler_get_size (client_sampler);
857 if (sampler_size_est_need > sampler_size_client_need)
858 bigger_size = sampler_size_est_need;
860 bigger_size = sampler_size_client_need;
862 // TODO respect the min, max
863 resize_wrapper (client_sampler, bigger_size);
864 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
869 * Estimate request rate
871 * Called every time we receive a request from the client.
876 struct GNUNET_TIME_Relative max_round_duration;
878 if (request_deltas_size > req_counter)
880 if ( 1 < req_counter)
882 /* Shift last request deltas to the right */
883 memcpy (&request_deltas[1],
885 (req_counter - 1) * sizeof (struct GNUNET_TIME_Relative));
887 /* Add current delta to beginning */
889 GNUNET_TIME_absolute_get_difference (last_request,
890 GNUNET_TIME_absolute_get ());
891 request_rate = T_relative_avg (request_deltas, req_counter);
893 /* Compute the duration a round will maximally take */
895 GNUNET_TIME_relative_add (round_interval,
896 GNUNET_TIME_relative_divide (round_interval, 2));
898 /* Set the estimated size the sampler has to have to
899 * satisfy the current client request rate */
900 sampler_size_client_need =
901 max_round_duration.rel_value_us / request_rate.rel_value_us;
903 /* Resize the sampler */
904 client_resize_wrapper ();
906 last_request = GNUNET_TIME_absolute_get ();
910 /***********************************************************************
912 ***********************************************************************/
919 * Function called by NSE.
921 * Updates sizes of sampler list and gossip list and adapt those lists
925 nse_callback (void *cls, struct GNUNET_TIME_Absolute timestamp,
926 double logestimate, double std_dev)
929 //double scale; // TODO this might go gloabal/config
931 LOG (GNUNET_ERROR_TYPE_DEBUG,
932 "Received a ns estimate - logest: %f, std_dev: %f (old_size: %u)\n",
933 logestimate, std_dev, RPS_sampler_get_size (prot_sampler));
935 estimate = GNUNET_NSE_log_estimate_to_n (logestimate);
936 // GNUNET_NSE_log_estimate_to_n (logestimate);
937 estimate = pow (estimate, 1.0 / 3);
938 // TODO add if std_dev is a number
939 // estimate += (std_dev * scale);
940 if (2 < ceil (estimate))
942 LOG (GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
943 sampler_size_est_need = estimate;
945 LOG (GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
947 /* If the NSE has changed adapt the lists accordingly */
948 resize_wrapper (prot_sampler, sampler_size_est_need);
949 client_resize_wrapper ();
954 * Callback called once the requested PeerIDs are ready.
956 * Sends those to the requesting client.
958 void client_respond (void *cls,
959 struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
961 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler returned %" PRIX32 " peers\n", num_peers);
962 struct GNUNET_MQ_Envelope *ev;
963 struct GNUNET_RPS_CS_ReplyMessage *out_msg;
964 struct GNUNET_SERVER_Client *client;
965 uint32_t size_needed;
966 struct client_ctx *cli_ctx;
968 client = (struct GNUNET_SERVER_Client *) cls;
970 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
971 num_peers * sizeof (struct GNUNET_PeerIdentity);
973 GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= size_needed);
975 ev = GNUNET_MQ_msg_extra (out_msg,
976 num_peers * sizeof (struct GNUNET_PeerIdentity),
977 GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
978 out_msg->num_peers = htonl (num_peers);
982 num_peers * sizeof (struct GNUNET_PeerIdentity));
985 cli_ctx = GNUNET_SERVER_client_get_user_context (client, struct client_ctx);
986 if ( NULL == cli_ctx ) {
987 cli_ctx = GNUNET_new (struct client_ctx);
988 cli_ctx->mq = GNUNET_MQ_queue_for_server_client (client);
989 GNUNET_SERVER_client_set_user_context (client, cli_ctx);
992 GNUNET_MQ_send (cli_ctx->mq, ev);
997 * Handle RPS request from the client.
1000 * @param client identification of the client
1001 * @param message the actual message
1004 handle_client_request (void *cls,
1005 struct GNUNET_SERVER_Client *client,
1006 const struct GNUNET_MessageHeader *message)
1008 struct GNUNET_RPS_CS_RequestMessage *msg;
1010 uint32_t size_needed;
1013 msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
1015 num_peers = ntohl (msg->num_peers);
1016 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
1017 num_peers * sizeof (struct GNUNET_PeerIdentity);
1019 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
1021 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1025 for (i = 0 ; i < num_peers ; i++)
1028 LOG (GNUNET_ERROR_TYPE_DEBUG, "Client requested %" PRIX32 " random peer(s).\n", num_peers);
1030 RPS_sampler_get_n_rand_peers (client_sampler, client_respond,
1031 client, num_peers, GNUNET_YES);
1033 GNUNET_SERVER_receive_done (client,
1039 * Handle seed from the client.
1041 * @param cls closure
1042 * @param client identification of the client
1043 * @param message the actual message
1046 handle_client_seed (void *cls,
1047 struct GNUNET_SERVER_Client *client,
1048 const struct GNUNET_MessageHeader *message)
1050 struct GNUNET_RPS_CS_SeedMessage *in_msg;
1051 struct GNUNET_PeerIdentity *peers;
1054 if (sizeof (struct GNUNET_RPS_CS_SeedMessage) < ntohs (message->size))
1056 GNUNET_break_op (0);
1057 GNUNET_SERVER_receive_done (client,
1060 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
1061 if ((ntohs (message->size) - sizeof (struct GNUNET_RPS_CS_SeedMessage)) /
1062 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1064 GNUNET_break_op (0);
1065 GNUNET_SERVER_receive_done (client,
1069 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
1070 peers = (struct GNUNET_PeerIdentity *) &message[1];
1072 for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
1073 RPS_sampler_update (prot_sampler, &peers[i]);
1074 RPS_sampler_update (client_sampler, &peers[i]);
1076 GNUNET_SERVER_receive_done (client,
1082 * Handle a PUSH message from another peer.
1084 * Check the proof of work and store the PeerID
1085 * in the temporary list for pushed PeerIDs.
1087 * @param cls Closure
1088 * @param channel The channel the PUSH was received over
1089 * @param channel_ctx The context associated with this channel
1090 * @param msg The message header
1093 handle_peer_push (void *cls,
1094 struct GNUNET_CADET_Channel *channel,
1096 const struct GNUNET_MessageHeader *msg)
1098 const struct GNUNET_PeerIdentity *peer;
1100 // (check the proof of work)
1102 peer = (const struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
1103 // FIXME wait for cadet to change this function
1104 LOG (GNUNET_ERROR_TYPE_DEBUG, "PUSH received (%s)\n", GNUNET_i2s (peer));
1106 /* Add the sending peer to the push_list */
1107 if (GNUNET_NO == in_arr (push_list, pull_list_size, peer))
1108 GNUNET_array_append (push_list, push_list_size, *peer);
1114 * Handle PULL REQUEST request message from another peer.
1116 * Reply with the gossip list of PeerIDs.
1118 * @param cls Closure
1119 * @param channel The channel the PUSH was received over
1120 * @param channel_ctx The context associated with this channel
1121 * @param msg The message header
1124 handle_peer_pull_request (void *cls,
1125 struct GNUNET_CADET_Channel *channel,
1127 const struct GNUNET_MessageHeader *msg)
1129 struct GNUNET_PeerIdentity *peer;
1131 struct GNUNET_MQ_Handle *mq;
1132 struct GNUNET_MQ_Envelope *ev;
1133 struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
1136 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (channel,
1137 GNUNET_CADET_OPTION_PEER);
1138 // FIXME wait for cadet to change this function
1140 /* Compute actual size */
1141 send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
1142 gossip_list_size * sizeof (struct GNUNET_PeerIdentity);
1144 if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
1145 /* Compute number of peers to send
1146 * If too long, simply truncate */
1148 (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
1149 sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1150 sizeof (struct GNUNET_PeerIdentity);
1152 send_size = gossip_list_size;
1154 LOG (GNUNET_ERROR_TYPE_DEBUG,
1155 "PULL REQUEST from peer %s received, going to send %u peers\n",
1156 GNUNET_i2s (peer), send_size);
1158 mq = get_mq (peer_map, peer);
1160 ev = GNUNET_MQ_msg_extra (out_msg,
1161 send_size * sizeof (struct GNUNET_PeerIdentity),
1162 GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
1163 //out_msg->num_peers = htonl (gossip_list_size);
1164 out_msg->num_peers = htonl (send_size);
1165 memcpy (&out_msg[1], gossip_list,
1166 send_size * sizeof (struct GNUNET_PeerIdentity));
1168 GNUNET_MQ_send (mq, ev);
1174 * Handle PULL REPLY message from another peer.
1176 * Check whether we sent a corresponding request and
1177 * whether this reply is the first one.
1179 * @param cls Closure
1180 * @param channel The channel the PUSH was received over
1181 * @param channel_ctx The context associated with this channel
1182 * @param msg The message header
1185 handle_peer_pull_reply (void *cls,
1186 struct GNUNET_CADET_Channel *channel,
1188 const struct GNUNET_MessageHeader *msg)
1190 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received\n");
1192 struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
1193 struct GNUNET_PeerIdentity *peers;
1194 struct PeerContext *peer_ctx;
1195 struct GNUNET_PeerIdentity *sender;
1196 struct PeerContext *sender_ctx;
1197 struct PeerOutstandingOp out_op;
1200 /* Check for protocol violation */
1201 if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
1203 GNUNET_break_op (0);
1204 return GNUNET_SYSERR;
1206 in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
1207 if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1208 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1210 LOG (GNUNET_ERROR_TYPE_ERROR,
1211 "message says it sends %" PRIu64 " peers, have space for %i peers\n",
1212 ntohl (in_msg->num_peers),
1213 (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1214 sizeof (struct GNUNET_PeerIdentity));
1215 GNUNET_break_op (0);
1216 return GNUNET_SYSERR;
1219 /* Do actual logic */
1220 sender = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1221 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1222 // Guess simply casting isn't the nicest way...
1223 // FIXME wait for cadet to change this function
1224 sender_ctx = get_peer_ctx (peer_map, sender);
1226 if (0 == get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
1228 GNUNET_break_op (0);
1232 peers = (struct GNUNET_PeerIdentity *) &msg[1];
1233 for ( i = 0 ; i < ntohl (in_msg->num_peers) ; i++ )
1235 peer_ctx = get_peer_ctx (peer_map, &peers[i]);
1236 if (NULL != peer_ctx->send_channel
1237 || NULL != peer_ctx->recv_channel)
1239 if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i])
1240 && GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peers[i]))
1241 GNUNET_array_append (pull_list, pull_list_size, peers[i]);
1243 else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
1245 out_op.op = insert_in_pull_list;
1246 out_op.op_cls = NULL;
1247 GNUNET_array_append (peer_ctx->outstanding_ops,
1248 peer_ctx->num_outstanding_ops,
1253 unset_peer_flag (sender_ctx, PULL_REPLY_PENDING);
1254 rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, sender);
1261 * Send out PUSHes and PULLs.
1263 * This is executed regylary.
1266 do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1268 LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round\n");
1271 unsigned int *permut;
1272 unsigned int n_peers; /* Number of peers we send pushes/pulls to */
1273 struct GNUNET_MQ_Envelope *ev;
1274 struct GNUNET_PeerIdentity peer;
1275 struct GNUNET_PeerIdentity *tmp_peer;
1276 struct GNUNET_MQ_Handle *mq;
1278 LOG (GNUNET_ERROR_TYPE_DEBUG,
1279 "Printing gossip list:\n");
1280 for (i = 0 ; i < gossip_list_size ; i++)
1281 LOG (GNUNET_ERROR_TYPE_DEBUG,
1282 "\t%s\n", GNUNET_i2s (&gossip_list[i]));
1283 // TODO log lists, ...
1285 /* Would it make sense to have one shuffeled gossip list and then
1286 * to send PUSHes to first alpha peers, PULL requests to next beta peers and
1287 * use the rest to update sampler?
1288 * in essence get random peers with consumption */
1291 if (0 < gossip_list_size)
1293 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
1294 (unsigned int) gossip_list_size);
1295 n_peers = ceil (alpha * gossip_list_size);
1296 LOG (GNUNET_ERROR_TYPE_DEBUG,
1297 "Going to send pushes to %u ceil (%f * %u) peers.\n",
1298 n_peers, alpha, gossip_list_size);
1299 for (i = 0 ; i < n_peers ; i++)
1301 peer = gossip_list[permut[i]];
1302 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
1303 { // FIXME if this fails schedule/loop this for later
1304 LOG (GNUNET_ERROR_TYPE_DEBUG,
1305 "Sending PUSH to peer %s of gossiped list.\n",
1306 GNUNET_i2s (&peer));
1308 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
1309 mq = get_mq (peer_map, &peer);
1310 GNUNET_MQ_send (mq, ev);
1313 GNUNET_free (permut);
1317 /* Send PULL requests */
1318 //permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG, (unsigned int) sampler_list->size);
1319 n_peers = ceil (beta * gossip_list_size);
1320 LOG (GNUNET_ERROR_TYPE_DEBUG,
1321 "Going to send pulls to %u ceil (%f * %u) peers.\n",
1322 n_peers, beta, gossip_list_size);
1323 for (i = 0 ; i < n_peers ; i++)
1325 tmp_peer = get_rand_peer_ignore_list (gossip_list, gossip_list_size,
1326 pending_pull_reply_list, pending_pull_reply_list_size);
1327 if (NULL != tmp_peer)
1330 GNUNET_free (tmp_peer);
1332 GNUNET_array_append (pending_pull_reply_list, pending_pull_reply_list_size, peer);
1334 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer))
1335 { // FIXME if this fails schedule/loop this for later
1336 LOG (GNUNET_ERROR_TYPE_DEBUG,
1337 "Sending PULL request to peer %s of gossiped list.\n",
1338 GNUNET_i2s (&peer));
1340 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
1341 mq = get_mq (peer_map, &peer);
1342 GNUNET_MQ_send (mq, ev);
1348 /* Update gossip list */
1351 if ( push_list_size <= alpha * gossip_list_size &&
1352 push_list_size != 0 &&
1353 pull_list_size != 0 )
1355 LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the gossip list.\n");
1357 uint32_t first_border;
1358 uint32_t second_border;
1360 first_border = ceil (alpha * sampler_size_est_need);
1361 second_border = first_border + ceil (beta * sampler_size_est_need);
1363 GNUNET_array_grow (gossip_list, gossip_list_size, second_border);
1365 for (i = 0 ; i < first_border ; i++)
1366 { // TODO use RPS_sampler_get_n_rand_peers
1367 /* Update gossip list with peers received through PUSHes */
1368 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1370 gossip_list[i] = push_list[r_index];
1371 // TODO change the peer_flags accordingly
1374 for (i = first_border ; i < second_border ; i++)
1376 /* Update gossip list with peers received through PULLs */
1377 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
1379 gossip_list[i] = pull_list[r_index];
1380 // TODO change the peer_flags accordingly
1383 for (i = second_border ; i < sampler_size_est_need ; i++)
1385 /* Update gossip list with peers from history */
1386 RPS_sampler_get_n_rand_peers (prot_sampler, hist_update, NULL, 1, GNUNET_NO);
1387 num_hist_update_tasks++;
1388 // TODO change the peer_flags accordingly
1394 LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the gossip list.\n");
1396 // TODO independent of that also get some peers from CADET_get_peers()?
1399 /* Update samplers */
1401 for ( i = 0 ; i < push_list_size ; i++ )
1403 RPS_sampler_update (prot_sampler, &push_list[i]);
1404 RPS_sampler_update (client_sampler, &push_list[i]);
1405 // TODO set in_flag?
1408 for ( i = 0 ; i < pull_list_size ; i++ )
1410 RPS_sampler_update (prot_sampler, &push_list[i]);
1411 RPS_sampler_update (client_sampler, &push_list[i]);
1412 // TODO set in_flag?
1416 /* Empty push/pull lists */
1417 GNUNET_array_grow (push_list, push_list_size, 0);
1418 GNUNET_array_grow (pull_list, pull_list_size, 0);
1420 struct GNUNET_TIME_Relative time_next_round;
1421 struct GNUNET_TIME_Relative half_round_interval;
1422 unsigned int rand_delay;
1424 /* Compute random time value between .5 * round_interval and 1.5 *round_interval */
1425 half_round_interval = GNUNET_TIME_relative_divide (round_interval, 2);
1429 * Compute random value between (0 and 1) * round_interval
1430 * via multiplying round_interval with a 'fraction' (0 to value)/value
1432 rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT_MAX/10);
1433 time_next_round = GNUNET_TIME_relative_multiply (round_interval, rand_delay);
1434 time_next_round = GNUNET_TIME_relative_divide (time_next_round, UINT_MAX/10);
1435 time_next_round = GNUNET_TIME_relative_add (time_next_round, half_round_interval);
1436 } while (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == time_next_round.rel_value_us);
1438 /* Schedule next round */
1439 do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_round, NULL);
1440 LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
1445 * Open a connection to given peer and store channel and mq.
1448 insertCB (void *cls, struct RPS_Sampler *sampler,
1449 const struct GNUNET_PeerIdentity *id)
1451 // We open a channel to be notified when this peer goes down.
1452 (void) get_channel (peer_map, id);
1457 * Close the connection to given peer and delete channel and mq
1458 * if the peer is not anymore in the sampler.
1461 removeCB (void *cls, struct RPS_Sampler *sampler,
1462 const struct GNUNET_PeerIdentity *id)
1465 struct PeerContext *ctx;
1467 s = RPS_sampler_count_id (sampler, id);
1470 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, id)
1471 && 0 != GNUNET_CRYPTO_cmp_peer_identity (id, &own_identity))
1473 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, id);
1474 if (NULL != ctx->send_channel)
1476 if (NULL != ctx->mq)
1478 GNUNET_MQ_destroy (ctx->mq);
1481 // may already be freed at shutdown of cadet
1482 // maybe this fails at our own channel
1483 GNUNET_CADET_channel_destroy (ctx->send_channel);
1484 ctx->send_channel = NULL;
1486 // TODO cleanup peer
1487 //(void) GNUNET_CONTAINER_multipeermap_remove_all (peer_map, id);
1493 rps_start (struct GNUNET_SERVER_Handle *server);
1496 * This is called from GNUNET_CADET_get_peers().
1498 * It is called on every peer(ID) that cadet somehow has contact with.
1499 * We use those to initialise the sampler.
1502 init_peer_cb (void *cls,
1503 const struct GNUNET_PeerIdentity *peer,
1504 int tunnel, // "Do we have a tunnel towards this peer?"
1505 unsigned int n_paths, // "Number of known paths towards this peer"
1506 unsigned int best_path) // "How long is the best path?
1507 // (0 = unknown, 1 = ourselves, 2 = neighbor)"
1509 struct GNUNET_SERVER_Handle *server;
1510 struct PeerOutstandingOp out_op;
1511 struct PeerContext *peer_ctx;
1513 server = (struct GNUNET_SERVER_Handle *) cls;
1514 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, peer))
1516 LOG (GNUNET_ERROR_TYPE_DEBUG,
1517 "Got peer %s (at %p) from CADET (gossip_list_size: %u)\n",
1518 GNUNET_i2s (peer), peer, gossip_list_size);
1520 // maybe create a function for that
1521 peer_ctx = get_peer_ctx (peer_map, peer);
1522 // FIXME this peer might already be marked as LIVE
1523 if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
1525 out_op.op = insert_in_sampler;
1526 out_op.op_cls = NULL;
1527 GNUNET_array_append (peer_ctx->outstanding_ops,
1528 peer_ctx->num_outstanding_ops,
1532 if (GNUNET_NO == insert_in_gossip_list_scheduled (peer_ctx))
1534 out_op.op = insert_in_gossip_list;
1535 out_op.op_cls = NULL;
1536 GNUNET_array_append (peer_ctx->outstanding_ops,
1537 peer_ctx->num_outstanding_ops,
1541 /* Trigger livelyness test on peer */
1542 (void) get_channel (peer_map, peer);
1544 // send push/pull to each of those peers?
1546 else if (NULL == peer)
1552 // * Clean the send channel of a peer
1555 //peer_clean (const struct GNUNET_PeerIdentity *peer)
1557 // struct PeerContext *peer_ctx;
1558 // struct GNUNET_CADET_Channel *channel;
1560 // if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
1562 // peer_ctx = get_peer_ctx (peer_map, peer);
1563 // if (NULL != peer_ctx->send_channel)
1565 // channel = peer_ctx->send_channel;
1566 // peer_ctx->send_channel = NULL;
1567 // GNUNET_CADET_channel_destroy (channel);
1574 * Callback used to remove peers from the multipeermap.
1577 peer_remove_cb (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
1579 struct PeerContext *peer_ctx;
1580 const struct GNUNET_CADET_Channel *channel =
1581 (const struct GNUNET_CADET_Channel *) cls;
1582 struct GNUNET_CADET_Channel *recv;
1583 struct GNUNET_CADET_Channel *send;
1585 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, value))
1587 peer_ctx = (struct PeerContext *) value;
1589 if (0 != peer_ctx->num_outstanding_ops)
1590 GNUNET_array_grow (peer_ctx->outstanding_ops,
1591 peer_ctx->num_outstanding_ops,
1594 if (NULL != peer_ctx->mq)
1595 GNUNET_MQ_destroy (peer_ctx->mq);
1597 if (NULL != peer_ctx->is_live_task)
1599 LOG (GNUNET_ERROR_TYPE_DEBUG,
1600 "Trying to cancle is_live_task for peer %s\n",
1602 GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
1603 peer_ctx->is_live_task = NULL;
1606 send = peer_ctx->send_channel;
1607 peer_ctx->send_channel = NULL;
1608 recv = peer_ctx->send_channel;
1609 peer_ctx->recv_channel = NULL;
1614 GNUNET_CADET_channel_destroy (send);
1620 GNUNET_CADET_channel_destroy (recv);
1623 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
1624 LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
1626 GNUNET_free (peer_ctx);
1634 * Task run during shutdown.
1640 shutdown_task (void *cls,
1641 const struct GNUNET_SCHEDULER_TaskContext *tc)
1643 LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
1645 if ( NULL != do_round_task )
1647 GNUNET_SCHEDULER_cancel (do_round_task);
1648 do_round_task = NULL;
1653 if (GNUNET_SYSERR == GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
1654 LOG (GNUNET_ERROR_TYPE_WARNING,
1655 "Iterating over peers to disconnect from them was cancelled\n");
1658 GNUNET_NSE_disconnect (nse);
1659 GNUNET_CADET_disconnect (cadet_handle);
1660 RPS_sampler_destroy (prot_sampler);
1661 RPS_sampler_destroy (client_sampler);
1662 GNUNET_break (0 == GNUNET_CONTAINER_multipeermap_size (peer_map));
1663 GNUNET_CONTAINER_multipeermap_destroy (peer_map);
1664 GNUNET_array_grow (gossip_list, gossip_list_size, 0);
1665 GNUNET_array_grow (push_list, push_list_size, 0);
1666 GNUNET_array_grow (pull_list, pull_list_size, 0);
1671 * A client disconnected. Remove all of its data structure entries.
1673 * @param cls closure, NULL
1674 * @param client identification of the client
1677 handle_client_disconnect (void *cls,
1678 struct GNUNET_SERVER_Client * client)
1684 * Handle the channel a peer opens to us.
1686 * @param cls The closure
1687 * @param channel The channel the peer wants to establish
1688 * @param initiator The peer's peer ID
1689 * @param port The port the channel is being established over
1690 * @param options Further options
1693 handle_inbound_channel (void *cls,
1694 struct GNUNET_CADET_Channel *channel,
1695 const struct GNUNET_PeerIdentity *initiator,
1697 enum GNUNET_CADET_ChannelOption options)
1699 struct PeerContext *peer_ctx;
1701 LOG (GNUNET_ERROR_TYPE_DEBUG,
1702 "New channel was established to us (Peer %s).\n",
1703 GNUNET_i2s (initiator));
1705 GNUNET_assert (NULL != channel);
1707 // we might not even store the recv_channel
1709 peer_ctx = get_peer_ctx (peer_map, initiator);
1710 // FIXME what do we do if a channel is established twice?
1711 // overwrite? Clean old channel? ...?
1712 //if (NULL != peer_ctx->recv_channel)
1714 // peer_ctx->recv_channel = channel;
1716 peer_ctx->recv_channel = channel;
1718 peer_ctx->mq = NULL;
1720 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, initiator, peer_ctx,
1721 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
1723 peer_is_live (peer_ctx);
1725 return NULL; // TODO
1730 * This is called when a remote peer destroys a channel.
1732 * @param cls The closure
1733 * @param channel The channel being closed
1734 * @param channel_ctx The context associated with this channel
1737 cleanup_channel (void *cls,
1738 const struct GNUNET_CADET_Channel *channel,
1741 struct GNUNET_PeerIdentity *peer;
1742 struct PeerContext *peer_ctx;
1744 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1745 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1746 // Guess simply casting isn't the nicest way...
1747 // FIXME wait for cadet to change this function
1748 LOG (GNUNET_ERROR_TYPE_DEBUG, "Cleaning up channel to peer %s\n",
1751 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
1753 peer_ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
1755 if (NULL == peer_ctx) /* It could have been removed by shutdown_task */
1758 if (channel == peer_ctx->send_channel)
1759 { /* Peer probably went down */
1760 rem_from_list (&gossip_list, &gossip_list_size, peer);
1761 rem_from_list (&pending_pull_reply_list, &pending_pull_reply_list_size, peer);
1763 /* Somwewhat {ab,re}use the iterator function */
1764 /* Cast to void is ok, because it's used as void in peer_remove_cb */
1765 (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
1768 peer_ctx->recv_channel = NULL;
1774 * Actually start the service.
1777 rps_start (struct GNUNET_SERVER_Handle *server)
1779 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
1780 {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
1781 sizeof (struct GNUNET_RPS_CS_RequestMessage)},
1782 {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
1786 GNUNET_SERVER_add_handlers (server, handlers);
1787 GNUNET_SERVER_disconnect_notify (server,
1788 &handle_client_disconnect,
1790 LOG (GNUNET_ERROR_TYPE_DEBUG, "Ready to receive requests from clients\n");
1793 num_hist_update_tasks = 0;
1795 do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
1796 LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
1798 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1805 * Process statistics requests.
1807 * @param cls closure
1808 * @param server the initialized server
1809 * @param c configuration to use
1813 struct GNUNET_SERVER_Handle *server,
1814 const struct GNUNET_CONFIGURATION_Handle *c)
1816 // TODO check what this does -- copied from gnunet-boss
1817 // - seems to work as expected
1818 GNUNET_log_setup ("rps", GNUNET_error_type_to_string (GNUNET_ERROR_TYPE_DEBUG), NULL);
1823 GNUNET_CRYPTO_get_peer_identity (cfg, &own_identity); // TODO check return value
1824 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
1825 "STARTING SERVICE (rps) for peer [%s]\n",
1826 GNUNET_i2s (&own_identity));
1829 /* Get time interval from the configuration */
1830 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "RPS",
1834 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read ROUNDINTERVAL from config\n");
1835 GNUNET_SCHEDULER_shutdown ();
1839 /* Get initial size of sampler/gossip list from the configuration */
1840 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (cfg, "RPS",
1842 (long long unsigned int *) &sampler_size_est_need))
1844 LOG (GNUNET_ERROR_TYPE_DEBUG, "Failed to read INITSIZE from config\n");
1845 GNUNET_SCHEDULER_shutdown ();
1848 LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
1854 /* connect to NSE */
1855 nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
1856 // TODO check whether that was successful
1857 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to NSE\n");
1863 peer_map = GNUNET_CONTAINER_multipeermap_create (sampler_size_est_need, GNUNET_NO);
1866 /* Initialise cadet */
1867 static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
1868 {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH ,
1869 sizeof (struct GNUNET_MessageHeader)},
1870 {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
1871 sizeof (struct GNUNET_MessageHeader)},
1872 {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
1876 const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
1877 cadet_handle = GNUNET_CADET_connect (cfg,
1879 &handle_inbound_channel,
1883 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connected to CADET\n");
1886 /* Initialise sampler */
1887 struct GNUNET_TIME_Relative half_round_interval;
1888 struct GNUNET_TIME_Relative max_round_interval;
1890 half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
1891 max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
1893 prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
1894 //insertCB, NULL, removeCB, NULL);
1895 NULL, NULL, NULL, NULL);
1896 client_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval,
1897 //nsertCB, NULL, removeCB, NULL);
1898 NULL, NULL, NULL, NULL);
1900 /* Initialise push and pull maps */
1905 pending_pull_reply_list = NULL;
1906 pending_pull_reply_list_size = 0;
1909 LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
1910 GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, server);
1912 // TODO send push/pull to each of those peers?
1917 * The main function for the rps service.
1919 * @param argc number of arguments from the command line
1920 * @param argv command line arguments
1921 * @return 0 ok, 1 on error
1924 main (int argc, char *const *argv)
1926 return (GNUNET_OK ==
1927 GNUNET_SERVICE_run (argc,
1930 GNUNET_SERVICE_OPTION_NONE,
1931 &run, NULL)) ? 0 : 1;
1934 /* end of gnunet-service-rps.c */