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22 * @file testbed/gnunet-service-testbed_oc.c
23 * @brief code for handling overlay connect operations
24 * @author Sree Harsha Totakura
27 #include "gnunet-service-testbed.h"
28 #include "gnunet-service-testbed_connectionpool.h"
29 #include "gnunet_transport_hello_service.h"
32 * Redefine LOG with a changed log component string
37 #define LOG(kind, ...) \
38 GNUNET_log_from (kind, "testbed-OC", __VA_ARGS__)
42 * Context information for requesting ATS to connect to a peer
44 struct ConnectivitySuggestContext
47 * The transport handle obtained from cache. Do NOT close/disconnect.
49 struct GNUNET_TRANSPORT_CoreHandle *th_;
52 * Configuration of the peer from cache. Do not free!
54 const struct GNUNET_CONFIGURATION_Handle *cfg;
57 * The GetCacheHandle for the peer2's transport handle
58 * (used to offer the HELLO to the peer).
60 struct GST_ConnectionPool_GetHandle *cgh_p2_th;
63 * The GetCacheHandle for the peer2's ATS handle.
65 struct GST_ConnectionPool_GetHandle *cgh_p2_ats;
68 * The ATS handle for the connectivity suggestion.
70 struct GNUNET_ATS_ConnectivitySuggestHandle *csh;
75 * Types for context information we create for overlay connect requests
77 enum OverlayConnectContextType
80 * This type is used if the overlay connection is local i.e. the connection
81 * has to be made between local peers
86 * Type to be used when the first peer is local and the other peer is on a slave
87 * controller started by us
89 OCC_TYPE_REMOTE_SLAVE,
92 * Type to be used when the first peer is local and the other peer is on a
93 * controller which is not started by us.
95 OCC_TYPE_REMOTE_LATERAL
100 * Context data for operations on second peer in local overlay connection
103 struct LocalPeer2Context
106 * The handle for offering the HELLO of the first peer to the second
109 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh;
112 * The transport ConnectivitySuggestContext
114 struct ConnectivitySuggestContext tcc;
119 * Context data for operations on second peer in remote overlay connection
122 struct RemotePeer2Context
125 * Controller of peer 2; If #OCC_TYPE_REMOTE_LATERAL is the type of overlay
126 * connection then this can be NULL until the connection to the controller is
129 struct GNUNET_TESTBED_Controller *p2c;
132 * Operation context for the suboperation we start to get the identity of the
135 struct OperationContext *opc;
138 * Notification handle acquire to connect to a remote controller. Only used
139 * if the type of overlay connection is #OCC_TYPE_REMOTE_LATERAL.
141 struct NeighbourConnectNotification *ncn;
144 * The neighbour handle. Only used if the type of overlay connection is
145 * #OCC_TYPE_REMOTE_LATERAL.
147 struct Neighbour *p2n;
151 * Context information for connecting 2 peers in overlay.
153 struct OverlayConnectContext
156 * The next pointer for maintaining a DLL of all OverlayConnectContexts
158 struct OverlayConnectContext *next;
161 * The prev pointer for maintaining a DLL of all OverlayConnectContexts
163 struct OverlayConnectContext *prev;
166 * The client which has requested for overlay connection. This is used to send
167 * either a success of failure message
169 struct GNUNET_SERVICE_Client *client;
172 * the first peer which is to expect an overlay connection from the second peer.
177 * Transport handle of the first peer obtained from cache to get its HELLO. Do
178 * NOT close/disconnect.
180 struct GNUNET_TRANSPORT_CoreHandle *p1th_;
183 * The #GST_ConnectionPool_GetHandle for the peer1's transport handle
185 struct GST_ConnectionPool_GetHandle *cgh_p1th;
188 * The #GST_ConnectionPool_GetHandle for registering callback to notify CORE
189 * level peer connects and to get our identity.
191 struct GST_ConnectionPool_GetHandle *cgh_ch;
194 * HELLO of the first peer. This should be sent to the second peer.
196 struct GNUNET_MessageHeader *hello;
199 * Get GetHelloHandle to acquire a HELLO of the first peer
201 struct GNUNET_TRANSPORT_HelloGetHandle *ghh;
204 * The error message we send if this overlay connect operation has timed out
209 * Context information for operations on the second peer
214 * Context information to be used if the second peer is local
216 struct LocalPeer2Context local;
219 * Context information to be used if the second peer is remote
221 struct RemotePeer2Context remote;
225 * The peer identity of the first peer
227 struct GNUNET_PeerIdentity peer_identity;
230 * The peer identity of the other peer
232 struct GNUNET_PeerIdentity other_peer_identity;
235 * The id of the operation responsible for creating this context
240 * The id of the task for sending HELLO of peer 2 to peer 1 and ask peer 1 to
243 struct GNUNET_SCHEDULER_Task *send_hello_task;
246 * The id of the overlay connect timeout task
248 struct GNUNET_SCHEDULER_Task *timeout_task;
251 * The id of the cleanup task
253 struct GNUNET_SCHEDULER_Task *cleanup_task;
256 * The type of this context information
258 enum OverlayConnectContextType type;
261 * The id of the second peer which has to connect to the first peer
263 uint32_t other_peer_id;
268 * Context information for remote overlay connect operations. Remote overlay
269 * connections are used when peers A and B reside on different hosts. In these
270 * operations the host controller for peer B is asked by the host controller of
271 * peer A to make peer B connect to peer A by sending the controller of peer B
272 * the HELLO of peer A.
274 struct RemoteOverlayConnectCtx
277 * the next pointer for DLL
279 struct RemoteOverlayConnectCtx *next;
282 * the prev pointer for DLL
284 struct RemoteOverlayConnectCtx *prev;
287 * The peer handle of peer B
294 struct GNUNET_MessageHeader *hello;
297 * The handle for offering HELLO
299 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh;
302 * The transport try connect context
304 struct ConnectivitySuggestContext tcc;
307 * The peer identity of peer A
309 struct GNUNET_PeerIdentity a_id;
312 * Task for offering HELLO of A to B and doing try_connect
314 struct GNUNET_SCHEDULER_Task *attempt_connect_task_id;
317 * Task to timeout RequestOverlayConnect
319 struct GNUNET_SCHEDULER_Task *timeout_rocc_task_id;
322 * The id of the operation responsible for creating this context
329 * DLL head for OverlayConnectContext DLL - to be used to clean up during shutdown
331 static struct OverlayConnectContext *occq_head;
334 * DLL tail for OverlayConnectContext DLL
336 static struct OverlayConnectContext *occq_tail;
339 * DLL head for RequectOverlayConnectContext DLL - to be used to clean up during
342 static struct RemoteOverlayConnectCtx *roccq_head;
345 * DLL tail for RequectOverlayConnectContext DLL
347 static struct RemoteOverlayConnectCtx *roccq_tail;
351 * Cleans up ForwardedOverlayConnectContext
353 * @param focc the ForwardedOverlayConnectContext to cleanup
356 GST_cleanup_focc (struct ForwardedOverlayConnectContext *focc)
358 struct RegisteredHostContext *rhc = focc->rhc;
360 GNUNET_CONTAINER_DLL_remove (rhc->focc_dll_head,
363 GNUNET_free_non_null (focc->orig_msg);
369 * Timeout task for cancelling a forwarded overlay connect connect
371 * @param cls the `struct ForwardedOperationContext`
374 forwarded_overlay_connect_timeout (void *cls)
376 struct ForwardedOperationContext *fopc = cls;
377 struct RegisteredHostContext *rhc;
378 struct ForwardedOverlayConnectContext *focc;
380 fopc->timeout_task = NULL;
382 focc = rhc->focc_dll_head;
383 LOG_DEBUG ("Overlay linking between peers %u and %u failed\n",
386 GST_cleanup_focc (focc);
387 GST_forwarded_operation_timeout (fopc);
388 if (NULL != rhc->focc_dll_head)
389 GST_process_next_focc (rhc);
394 * Callback to be called when forwarded overlay connection operation has a reply
395 * from the sub-controller successfull. We have to relay the reply msg back to
398 * @param cls ForwardedOperationContext
399 * @param msg the peer create success message
402 forwarded_overlay_connect_listener (void *cls,
403 const struct GNUNET_MessageHeader *msg)
405 struct ForwardedOperationContext *fopc = cls;
406 struct RegisteredHostContext *rhc;
407 struct ForwardedOverlayConnectContext *focc;
410 GST_forwarded_operation_reply_relay (cls, msg);
411 focc = rhc->focc_dll_head;
412 GST_cleanup_focc (focc);
413 if (NULL != rhc->focc_dll_head)
414 GST_process_next_focc (rhc);
419 * Processes a forwarded overlay connect context in the queue of the given RegisteredHostContext
421 * @param rhc the RegisteredHostContext
424 GST_process_next_focc (struct RegisteredHostContext *rhc)
426 struct ForwardedOperationContext *fopc;
427 struct ForwardedOverlayConnectContext *focc;
431 focc = rhc->focc_dll_head;
432 GNUNET_assert (NULL != focc);
433 GNUNET_assert (RHC_DONE == rhc->state);
434 GNUNET_assert (VALID_PEER_ID (focc->peer1));
435 peer = GST_peer_list[focc->peer1];
436 GNUNET_assert (GNUNET_YES == peer->is_remote);
437 GNUNET_assert (NULL != (slave = peer->details.remote.slave));
438 fopc = GNUNET_new (struct ForwardedOperationContext);
439 fopc->client = focc->client;
440 fopc->operation_id = focc->operation_id;
442 fopc->type = OP_OVERLAY_CONNECT;
444 GNUNET_TESTBED_forward_operation_msg_ (slave->controller,
447 &forwarded_overlay_connect_listener,
449 GNUNET_free (focc->orig_msg);
450 focc->orig_msg = NULL;
451 fopc->timeout_task = GNUNET_SCHEDULER_add_delayed (GST_timeout,
453 forwarded_overlay_connect_timeout,
455 GNUNET_CONTAINER_DLL_insert_tail (fopcq_head,
462 * Cleans up any used handles in local peer2 context
464 * @param lp2c the local peer2 context information
467 cleanup_occ_lp2c (struct LocalPeer2Context *lp2c)
469 if (NULL != lp2c->ohh)
471 GNUNET_TRANSPORT_offer_hello_cancel (lp2c->ohh);
474 if (NULL != lp2c->tcc.cgh_p2_th)
476 GST_connection_pool_get_handle_done (lp2c->tcc.cgh_p2_th);
477 lp2c->tcc.cgh_p2_th = NULL;
479 if (NULL != lp2c->tcc.cgh_p2_ats)
481 GST_connection_pool_get_handle_done (lp2c->tcc.cgh_p2_ats);
482 lp2c->tcc.cgh_p2_ats = NULL;
484 if (NULL != lp2c->tcc.csh)
486 GNUNET_ATS_connectivity_suggest_cancel (lp2c->tcc.csh);
487 lp2c->tcc.csh = NULL;
493 * Cleans up any used handles in remote peer2 context. Relinquishes the
494 * remote controller connection if it has been established on-demand.
496 * @param rp2c the remote peer2 context information
499 cleanup_occ_rp2c (struct RemotePeer2Context *rp2c)
501 if (NULL != rp2c->opc)
503 GNUNET_TESTBED_forward_operation_msg_cancel_ (rp2c->opc);
506 if (NULL != rp2c->ncn)
508 GST_neighbour_get_connection_cancel (rp2c->ncn);
511 if ((NULL != rp2c->p2c) && (NULL != rp2c->p2n))
513 GST_neighbour_release_connection (rp2c->p2n);
519 * Condition for checking if given peer is ready to be destroyed
521 * @param peer the peer to check
523 #define PEER_EXPIRED(peer) \
524 ((GNUNET_YES == peer->destroy_flag) && (0 == peer->reference_cnt))
527 * Cleanup overlay connect context structure
529 * @param occ the overlay connect context
532 cleanup_occ (struct OverlayConnectContext *occ)
536 LOG_DEBUG ("0x%llx: Cleaning up occ\n",
538 GNUNET_free_non_null (occ->emsg);
539 GNUNET_free_non_null (occ->hello);
540 if (NULL != occ->send_hello_task)
541 GNUNET_SCHEDULER_cancel (occ->send_hello_task);
542 if (NULL != occ->cleanup_task)
543 GNUNET_SCHEDULER_cancel (occ->cleanup_task);
544 if (NULL != occ->timeout_task)
545 GNUNET_SCHEDULER_cancel (occ->timeout_task);
546 if (NULL != occ->cgh_ch)
547 GST_connection_pool_get_handle_done (occ->cgh_ch);
548 if (NULL != occ->ghh)
549 GNUNET_TRANSPORT_hello_get_cancel (occ->ghh);
550 GST_connection_pool_get_handle_done (occ->cgh_p1th);
551 GNUNET_assert (NULL != GST_peer_list);
552 GNUNET_assert (occ->peer->reference_cnt > 0);
553 occ->peer->reference_cnt--;
554 if (PEER_EXPIRED (occ->peer))
555 GST_destroy_peer (occ->peer);
559 peer2 = GST_peer_list[occ->other_peer_id];
560 GNUNET_assert (peer2->reference_cnt > 0);
561 peer2->reference_cnt--;
562 if (PEER_EXPIRED (peer2))
563 GST_destroy_peer (peer2);
564 cleanup_occ_lp2c (&occ->p2ctx.local);
567 case OCC_TYPE_REMOTE_SLAVE:
568 case OCC_TYPE_REMOTE_LATERAL:
569 cleanup_occ_rp2c (&occ->p2ctx.remote);
572 GNUNET_CONTAINER_DLL_remove (occq_head,
580 * Task for cleaing up overlay connect context structure
582 * @param cls the overlay connect context
585 do_cleanup_occ (void *cls)
587 struct OverlayConnectContext *occ = cls;
589 occ->cleanup_task = NULL;
595 * Task which will be run when overlay connect request has been timed out
597 * @param cls the OverlayConnectContext
600 timeout_overlay_connect (void *cls)
602 struct OverlayConnectContext *occ = cls;
604 GNUNET_assert (NULL != occ->timeout_task);
605 occ->timeout_task = NULL;
606 /* LOG (GNUNET_ERROR_TYPE_WARNING, */
607 /* "0x%llx: Timeout while connecting peers %u and %u: %s\n", occ->op_id, */
608 /* occ->peer->id, occ->other_peer_id, occ->emsg); */
609 GST_send_operation_fail_msg (occ->client,
617 * Notify OC subsystem that @a client disconnected.
619 * @param client the client that disconnected
622 GST_notify_client_disconnect_oc (struct GNUNET_SERVICE_Client *client)
624 struct ForwardedOperationContext *fopc;
625 struct ForwardedOperationContext *fopcn;
626 struct OverlayConnectContext *occ;
627 struct OverlayConnectContext *occn;
629 for (fopc = fopcq_head; NULL != fopc; fopc = fopcn)
632 if (fopc->client == client)
634 GNUNET_SCHEDULER_cancel (fopc->timeout_task);
635 GST_forwarded_operation_timeout (fopc);
638 for (occ = occq_head; NULL != occ; occ = occn)
641 if (occ->client == client)
644 // FIXME: implement clean up for client_keep replacements!
654 send_overlay_connect_success_msg (struct OverlayConnectContext *occ)
656 struct GNUNET_MQ_Envelope *env;
657 struct GNUNET_TESTBED_ConnectionEventMessage *msg;
659 LOG_DEBUG ("0x%llx: Peers connected - Sending overlay connect success\n",
661 env = GNUNET_MQ_msg (msg,
662 GNUNET_MESSAGE_TYPE_TESTBED_PEER_CONNECT_EVENT);
663 msg->event_type = htonl (GNUNET_TESTBED_ET_CONNECT);
664 msg->peer1 = htonl (occ->peer->id);
665 msg->peer2 = htonl (occ->other_peer_id);
666 msg->operation_id = GNUNET_htonll (occ->op_id);
667 GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (occ->client),
673 * Function called to notify transport users that another
674 * peer connected to us.
677 * @param new_peer the peer that connected
680 overlay_connect_notify (void *cls,
681 const struct GNUNET_PeerIdentity *new_peer)
683 struct OverlayConnectContext *occ = cls;
685 char *other_peer_str;
687 LOG_DEBUG ("Overlay connect notify\n");
689 memcmp (new_peer, &occ->peer_identity,
690 sizeof(struct GNUNET_PeerIdentity)))
692 new_peer_str = GNUNET_strdup (GNUNET_i2s (new_peer));
693 other_peer_str = GNUNET_strdup (GNUNET_i2s (&occ->other_peer_identity));
696 &occ->other_peer_identity,
697 sizeof(struct GNUNET_PeerIdentity)))
699 LOG_DEBUG ("Unexpected peer %s connected when expecting peer %s\n",
702 GNUNET_free (new_peer_str);
703 GNUNET_free (other_peer_str);
706 GNUNET_free (new_peer_str);
707 LOG_DEBUG ("0x%llx: Peer %s connected to peer %s\n",
710 GNUNET_i2s (&occ->peer_identity));
711 GNUNET_free (other_peer_str);
712 if (NULL != occ->send_hello_task)
714 GNUNET_SCHEDULER_cancel (occ->send_hello_task);
715 occ->send_hello_task = NULL;
717 GNUNET_assert (NULL != occ->timeout_task);
718 GNUNET_SCHEDULER_cancel (occ->timeout_task);
719 occ->timeout_task = NULL;
723 cleanup_occ_lp2c (&occ->p2ctx.local);
726 case OCC_TYPE_REMOTE_SLAVE:
727 case OCC_TYPE_REMOTE_LATERAL:
728 cleanup_occ_rp2c (&occ->p2ctx.remote);
731 GNUNET_free_non_null (occ->emsg);
733 send_overlay_connect_success_msg (occ);
734 occ->cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup_occ,
740 * Callback from cache with needed ATS handle set
742 * @param cls a `struct OverlayConnectCtx *`
743 * @param ch the handle to CORE. Can be NULL if it is not requested
744 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
745 * @param ac the handle to ATS. Can be NULL if it is not requested
746 * @param my_identity the identity of our peer
747 * @param cfg configuration of the peer
750 occ_cache_get_handle_ats_occ_cb (void *cls,
751 struct GNUNET_CORE_Handle *ch,
752 struct GNUNET_TRANSPORT_CoreHandle *th,
753 struct GNUNET_ATS_ConnectivityHandle *ac,
754 const struct GNUNET_PeerIdentity *my_identity,
755 const struct GNUNET_CONFIGURATION_Handle *cfg)
757 struct OverlayConnectContext *occ = cls;
758 struct LocalPeer2Context *lp2c;
760 GNUNET_assert (OCC_TYPE_LOCAL == occ->type);
761 GNUNET_assert (NULL != occ->timeout_task);
762 GNUNET_free_non_null (occ->emsg);
765 GNUNET_asprintf (&occ->emsg,
766 "0x%llx: Failed to connect to ATS of peer with id: %u",
769 GNUNET_SCHEDULER_cancel (occ->timeout_task);
771 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect,
777 GNUNET_asprintf (&occ->emsg,
778 "0x%llx: Timeout during GNUNET_ATS_connectivity_suggest() at peer %s",
780 GNUNET_i2s (&occ->other_peer_identity));
782 lp2c = &occ->p2ctx.local;
784 GNUNET_ATS_connectivity_suggest (ac,
791 * Callback from cache with needed ATS handle set
793 * @param cls a `struct RemoteOverlayConnectCtx *`
794 * @param ch the handle to CORE. Can be NULL if it is not requested
795 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
796 * @param ac the handle to ATS. Can be NULL if it is not requested
797 * @param my_identity the identity of our peer
800 occ_cache_get_handle_ats_rocc_cb (void *cls,
801 struct GNUNET_CORE_Handle *ch,
802 struct GNUNET_TRANSPORT_CoreHandle *th,
803 struct GNUNET_ATS_ConnectivityHandle *ac,
804 const struct GNUNET_PeerIdentity *my_identity,
805 const struct GNUNET_CONFIGURATION_Handle *cfg)
807 struct RemoteOverlayConnectCtx *rocc = cls;
810 GNUNET_ATS_connectivity_suggest (ac,
817 * Task to offer HELLO of peer 1 to peer 2 and try to make peer 2 to connect to
820 * @param cls the OverlayConnectContext
823 send_hello (void *cls);
827 * Task that is run when hello has been sent If tc->reason =
828 * #GNUNET_SCHEDULER_REASON_TIMEOUT then sending HELLO failed; if
829 * #GNUNET_SCHEDULER_REASON_READ_READY is succeeded
831 * @param cls the overlay connect context
834 occ_hello_sent_cb (void *cls)
836 struct OverlayConnectContext *occ = cls;
837 struct LocalPeer2Context *lp2c;
840 GNUNET_assert (OCC_TYPE_LOCAL == occ->type);
841 GNUNET_assert (NULL != occ->timeout_task);
842 lp2c = &occ->p2ctx.local;
845 GNUNET_assert (NULL == occ->send_hello_task);
846 GNUNET_free_non_null (occ->emsg);
848 GNUNET_asprintf (&occ->emsg,
849 "0x%llx: Timeout while acquiring ATS of %s from cache",
851 GNUNET_i2s (&occ->other_peer_identity));
852 GNUNET_assert (NULL != (peer2 = GST_peer_list[occ->other_peer_id]));
853 lp2c->tcc.cgh_p2_ats =
854 GST_connection_pool_get_handle (occ->other_peer_id,
855 peer2->details.local.cfg,
856 GST_CONNECTIONPOOL_SERVICE_ATS_CONNECTIVITY,
857 &occ_cache_get_handle_ats_occ_cb,
858 occ, NULL, NULL, NULL);
863 * Sends the HELLO of peer1 to peer2's controller through remote overlay connect
866 * @param occ the overlay connect context. Its type must be either
867 * #OCC_TYPE_REMOTE_SLAVE or #OCC_TYPE_REMOTE_LATERAL
870 send_hello_thru_rocc (struct OverlayConnectContext *occ)
872 struct GNUNET_TESTBED_RemoteOverlayConnectMessage *msg;
873 char *other_peer_str;
877 GNUNET_assert (OCC_TYPE_LOCAL != occ->type);
878 GNUNET_assert (NULL != occ->hello);
879 other_peer_str = GNUNET_strdup (GNUNET_i2s (&occ->other_peer_identity));
881 "0x%llx: Offering HELLO of %s (size: %u) to %s via Remote Overlay Request\n",
883 GNUNET_i2s (&occ->peer_identity),
884 ntohs (occ->hello->size),
886 GNUNET_free (other_peer_str);
887 hello_size = ntohs (occ->hello->size);
888 msize = sizeof(struct GNUNET_TESTBED_RemoteOverlayConnectMessage)
890 msg = GNUNET_malloc (msize);
892 htons (GNUNET_MESSAGE_TYPE_TESTBED_REMOTE_OVERLAY_CONNECT);
893 msg->header.size = htons (msize);
894 msg->peer = htonl (occ->other_peer_id);
895 msg->operation_id = GNUNET_htonll (occ->op_id);
896 msg->peer_identity = occ->peer_identity;
897 GNUNET_memcpy (msg->hello,
900 GNUNET_TESTBED_queue_message_ (occ->p2ctx.remote.p2c,
906 * Task to offer HELLO of peer 1 to peer 2. If peer2 is local it is offered
907 * using its TRANSPORT connection; if remote the HELLO is sent remotely by using
908 * send_hello_thru_rocc()
910 * @param cls the OverlayConnectContext
913 send_hello (void *cls)
915 struct OverlayConnectContext *occ = cls;
916 struct LocalPeer2Context *lp2c;
917 char *other_peer_str;
919 occ->send_hello_task = NULL;
920 GNUNET_assert (NULL != occ->timeout_task);
921 GNUNET_assert (NULL != occ->hello);
922 if (OCC_TYPE_LOCAL != occ->type)
924 send_hello_thru_rocc (occ);
927 lp2c = &occ->p2ctx.local;
928 other_peer_str = GNUNET_strdup (GNUNET_i2s (&occ->other_peer_identity));
929 LOG_DEBUG ("0x%llx: Offering HELLO of %s to %s\n",
931 GNUNET_i2s (&occ->peer_identity),
933 GNUNET_free (other_peer_str);
935 GNUNET_TRANSPORT_offer_hello (lp2c->tcc.cfg,
939 if (NULL == lp2c->ohh)
942 occ->send_hello_task =
943 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
944 (GNUNET_TIME_UNIT_MILLISECONDS,
946 + GNUNET_CRYPTO_random_u32
947 (GNUNET_CRYPTO_QUALITY_WEAK, 500)),
954 * Callback from cache with needed handles set
956 * @param cls the closure passed to GST_cache_get_handle_transport()
957 * @param ch the handle to CORE. Can be NULL if it is not requested
958 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
959 * @param ac the handle to ATS. Can be NULL if it is not requested
960 * @param ignore_ peer identity which is ignored in this callback
961 * @param cfg configuration of the peer
964 p2_transport_connect_cache_callback (void *cls,
965 struct GNUNET_CORE_Handle *ch,
966 struct GNUNET_TRANSPORT_CoreHandle *th,
967 struct GNUNET_ATS_ConnectivityHandle *ac,
968 const struct GNUNET_PeerIdentity *ignore_,
970 GNUNET_CONFIGURATION_Handle *cfg)
972 struct OverlayConnectContext *occ = cls;
974 GNUNET_assert (OCC_TYPE_LOCAL == occ->type);
977 GNUNET_asprintf (&occ->emsg,
978 "0x%llx: Cannot connect to TRANSPORT of %s",
980 GNUNET_i2s (&occ->other_peer_identity));
981 GNUNET_SCHEDULER_cancel (occ->timeout_task);
983 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
986 occ->p2ctx.local.tcc.th_ = th;
987 occ->p2ctx.local.tcc.cfg = cfg;
988 GNUNET_asprintf (&occ->emsg,
989 "0x%llx: Timeout while offering HELLO to %s",
991 GNUNET_i2s (&occ->other_peer_identity));
992 occ->send_hello_task = GNUNET_SCHEDULER_add_now (&send_hello, occ);
997 * Connects to the transport of the other peer if it is a local peer and
998 * schedules the send hello task
1000 * @param occ the overlay connect context
1003 p2_transport_connect (struct OverlayConnectContext *occ)
1007 /* HUH? Why to *obtain* HELLO? Seems we use this to *SEND* the
1009 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1010 "Connecting to transport of peer %s to obtain HELLO\n",
1011 GNUNET_i2s (&occ->other_peer_identity));
1012 GNUNET_assert (NULL == occ->emsg);
1013 GNUNET_assert (NULL != occ->hello);
1014 GNUNET_assert (NULL == occ->ghh);
1015 GNUNET_assert (NULL == occ->p1th_);
1016 GNUNET_assert (NULL == occ->cgh_p1th);
1017 if (OCC_TYPE_LOCAL == occ->type)
1019 GNUNET_assert (NULL != (peer2 = GST_peer_list[occ->other_peer_id]));
1020 occ->p2ctx.local.tcc.cgh_p2_th =
1021 GST_connection_pool_get_handle (occ->other_peer_id,
1022 peer2->details.local.cfg,
1023 GST_CONNECTIONPOOL_SERVICE_TRANSPORT,
1024 &p2_transport_connect_cache_callback,
1025 occ, NULL, NULL, NULL);
1028 GNUNET_asprintf (&occ->emsg,
1029 "0x%llx: Timeout while offering HELLO to %s",
1031 GNUNET_i2s (&occ->other_peer_identity));
1032 occ->send_hello_task = GNUNET_SCHEDULER_add_now (&send_hello, occ);
1037 * Test for checking whether HELLO message is empty
1039 * @param cls empty flag to set
1040 * @param address the HELLO
1041 * @param expiration expiration of the HELLO
1042 * @return #GNUNET_OK
1045 test_address (void *cls,
1046 const struct GNUNET_HELLO_Address *address,
1047 struct GNUNET_TIME_Absolute expiration)
1057 * Function called whenever there is an update to the HELLO of peers in the
1058 * OverlayConnectClosure. If we have a valid HELLO, we connect to the peer 2's
1059 * transport and offer peer 1's HELLO and ask peer 2 to connect to peer 1
1061 * @param cls closure
1062 * @param hello our updated HELLO
1065 hello_update_cb (void *cls,
1066 const struct GNUNET_MessageHeader *hello)
1068 struct OverlayConnectContext *occ = cls;
1072 msize = ntohs (hello->size);
1074 (void) GNUNET_HELLO_iterate_addresses ((const struct GNUNET_HELLO_Message *)
1078 if (GNUNET_YES == empty)
1080 LOG_DEBUG ("0x%llx: HELLO of %s is empty\n",
1082 GNUNET_i2s (&occ->peer_identity));
1085 LOG_DEBUG ("0x%llx: Received HELLO of %s\n",
1087 GNUNET_i2s (&occ->peer_identity));
1088 occ->hello = GNUNET_malloc (msize);
1089 GST_cache_add_hello (occ->peer->id, hello);
1090 GNUNET_memcpy (occ->hello, hello, msize);
1091 GNUNET_TRANSPORT_hello_get_cancel (occ->ghh);
1093 GST_connection_pool_get_handle_done (occ->cgh_p1th);
1094 occ->cgh_p1th = NULL;
1096 GNUNET_free_non_null (occ->emsg);
1098 p2_transport_connect (occ);
1103 * Callback from cache with needed handles set
1105 * @param cls the closure passed to GST_cache_get_handle_transport()
1106 * @param ch the handle to CORE. Can be NULL if it is not requested
1107 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
1108 * @param ac the handle to ATS. Can be NULL if it is not requested
1109 * @param ignore_ peer identity which is ignored in this callback
1112 p1_transport_connect_cache_callback (void *cls,
1113 struct GNUNET_CORE_Handle *ch,
1114 struct GNUNET_TRANSPORT_CoreHandle *th,
1115 struct GNUNET_ATS_ConnectivityHandle *ac,
1116 const struct GNUNET_PeerIdentity *ignore_,
1118 GNUNET_CONFIGURATION_Handle *cfg)
1120 struct OverlayConnectContext *occ = cls;
1122 GNUNET_free_non_null (occ->emsg);
1126 GNUNET_asprintf (&occ->emsg,
1127 "0x%llx: Cannot connect to TRANSPORT of %s",
1129 GNUNET_i2s (&occ->peer_identity));
1130 GNUNET_SCHEDULER_cancel (occ->timeout_task);
1132 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
1135 GNUNET_assert (NULL == occ->p1th_);
1136 GNUNET_assert (NULL != occ->cgh_p1th);
1138 GNUNET_asprintf (&occ->emsg,
1139 "0x%llx: Timeout while acquiring HELLO of peer %s",
1141 GNUNET_i2s (&occ->peer_identity));
1142 occ->ghh = GNUNET_TRANSPORT_hello_get (cfg,
1143 GNUNET_TRANSPORT_AC_ANY,
1150 * Callback from cache with needed CORE handle set
1152 * @param cls the closure passed to GST_cache_get_handle_transport()
1153 * @param ch the handle to CORE. Can be NULL if it is not requested
1154 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
1155 * @param ac the handle to ATS. Can be NULL if it is not requested
1156 * @param my_identity the identity of our peer
1159 occ_cache_get_handle_core_cb (void *cls,
1160 struct GNUNET_CORE_Handle *ch,
1161 struct GNUNET_TRANSPORT_CoreHandle *th,
1162 struct GNUNET_ATS_ConnectivityHandle *ac,
1163 const struct GNUNET_PeerIdentity *my_identity,
1164 const struct GNUNET_CONFIGURATION_Handle *cfg)
1166 struct OverlayConnectContext *occ = cls;
1167 const struct GNUNET_MessageHeader *hello;
1169 GNUNET_assert (NULL != occ->timeout_task);
1170 GNUNET_free_non_null (occ->emsg);
1171 if ((NULL == ch) || (NULL == my_identity))
1173 GNUNET_asprintf (&occ->emsg,
1174 "0x%llx: Failed to connect to CORE of peer with "
1178 GNUNET_SCHEDULER_cancel (occ->timeout_task);
1180 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
1185 GNUNET_CORE_get_mq (ch,
1186 &occ->other_peer_identity))
1188 LOG_DEBUG ("0x%llx: Target peer already connected\n",
1190 GNUNET_SCHEDULER_cancel (occ->timeout_task);
1191 occ->timeout_task = NULL;
1192 send_overlay_connect_success_msg (occ);
1193 occ->cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup_occ, occ);
1196 occ->peer_identity = *my_identity;
1197 LOG_DEBUG ("0x%llx: Acquiring HELLO of peer %s\n",
1199 GNUNET_i2s (&occ->peer_identity));
1200 /* Lookup for HELLO in hello cache */
1201 if (NULL != (hello = GST_cache_lookup_hello (occ->peer->id)))
1203 LOG_DEBUG ("0x%llx: HELLO of peer %s found in cache\n",
1205 GNUNET_i2s (&occ->peer_identity));
1206 occ->hello = GNUNET_copy_message (hello);
1207 p2_transport_connect (occ);
1210 GNUNET_asprintf (&occ->emsg,
1211 "0x%llx: Timeout while acquiring TRANSPORT of %s from cache",
1213 GNUNET_i2s (&occ->peer_identity));
1215 GST_connection_pool_get_handle (occ->peer->id,
1216 occ->peer->details.local.cfg,
1217 GST_CONNECTIONPOOL_SERVICE_TRANSPORT,
1218 p1_transport_connect_cache_callback,
1225 * Callback to be called when forwarded get peer config operation as part of
1226 * overlay connect is successfull. Connection to Peer 1's core is made and is
1227 * checked for new connection from peer 2
1229 * @param cls ForwardedOperationContext
1230 * @param msg the peer create success message
1233 overlay_connect_get_config (void *cls,
1234 const struct GNUNET_MessageHeader *msg)
1236 struct OverlayConnectContext *occ = cls;
1237 struct RemotePeer2Context *rp2c;
1238 const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *cmsg;
1240 GNUNET_assert (OCC_TYPE_LOCAL != occ->type);
1241 rp2c = &occ->p2ctx.remote;
1243 GNUNET_assert (NULL != occ->timeout_task);
1244 if (GNUNET_MESSAGE_TYPE_TESTBED_PEER_INFORMATION != ntohs (msg->type))
1246 GNUNET_SCHEDULER_cancel (occ->timeout_task);
1248 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
1251 (const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *) msg;
1252 occ->other_peer_identity = cmsg->peer_identity;
1253 GNUNET_free_non_null (occ->emsg);
1254 GNUNET_asprintf (&occ->emsg,
1255 "0x%llx: Timeout while connecting to CORE of peer with "
1260 GST_connection_pool_get_handle (occ->peer->id,
1261 occ->peer->details.local.cfg,
1262 GST_CONNECTIONPOOL_SERVICE_CORE,
1263 occ_cache_get_handle_core_cb,
1265 &occ->other_peer_identity,
1266 &overlay_connect_notify,
1273 * Callback which will be called after a host registration succeeded or failed
1275 * @param cls the RegisteredHostContext
1276 * @param emsg the error message; NULL if host registration is successful
1279 host_registration_comp (void *cls, const char *emsg)
1281 struct RegisteredHostContext *rhc = cls;
1283 rhc->state = RHC_DONE;
1284 GST_process_next_focc (rhc);
1289 * Iterator to match a registered host context
1291 * @param cls pointer 2 pointer of RegisteredHostContext
1292 * @param key current key code
1293 * @param value value in the hash map
1294 * @return #GNUNET_YES if we should continue to
1296 * #GNUNET_NO if not.
1299 reghost_match_iterator (void *cls,
1300 const struct GNUNET_HashCode *key,
1303 struct RegisteredHostContext **rh = cls;
1304 struct RegisteredHostContext *rh_val = value;
1306 if ((rh_val->host == (*rh)->host) && (rh_val->reg_host == (*rh)->reg_host))
1317 * Function to generate the hashcode corresponding to a RegisteredHostContext
1319 * @param reg_host the host which is being registered in RegisteredHostContext
1320 * @param host the host of the controller which has to connect to the above rhost
1321 * @return the hashcode
1323 static struct GNUNET_HashCode
1324 hash_hosts (struct GNUNET_TESTBED_Host *reg_host,
1325 struct GNUNET_TESTBED_Host *host)
1327 struct GNUNET_HashCode hash;
1328 uint32_t host_ids[2];
1330 host_ids[0] = GNUNET_TESTBED_host_get_id_ (reg_host);
1331 host_ids[1] = GNUNET_TESTBED_host_get_id_ (host);
1332 GNUNET_CRYPTO_hash (host_ids, sizeof(host_ids), &hash);
1338 * Checks if the given host is registered at the given slave.
1340 * @param slave the slave where registration has to be checked. The check is
1341 * actually done through a locally maintained hashmap. No
1342 * communication with the slave is involved.
1343 * @param host the host to register
1344 * @return If the given host is not registered already or the registration is
1345 * pending, it returns the registration context. Any overlay connects
1346 * to be forwarded should be queued in the context so that they can be
1347 * executed when the registration is completed. If the given host is
1348 * already registered, NULL is returned.
1350 static struct RegisteredHostContext *
1351 register_host (struct Slave *slave,
1352 struct GNUNET_TESTBED_Host *host)
1354 struct GNUNET_HashCode hash;
1355 struct RegisteredHostContext *rhc;
1357 rhc = GNUNET_new (struct RegisteredHostContext);
1358 rhc->reg_host = host;
1359 rhc->host = GST_host_list[slave->host_id];
1360 GNUNET_assert (NULL != rhc->reg_host);
1361 GNUNET_assert (NULL != rhc->host);
1362 rhc->state = RHC_INIT;
1363 hash = hash_hosts (rhc->reg_host, rhc->host);
1365 GNUNET_CONTAINER_multihashmap_contains (slave->reghost_map,
1368 GNUNET_CONTAINER_multihashmap_get_multiple (slave->reghost_map,
1370 reghost_match_iterator,
1373 /* create and add a new registerd host context */
1374 /* add the focc to its queue */
1375 GNUNET_CONTAINER_multihashmap_put (slave->reghost_map,
1378 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1379 GST_queue_host_registration (slave,
1380 host_registration_comp,
1386 /* rhc is now set to the existing one from the hash map by
1387 * reghost_match_iterator() */
1388 /* if queue is empty then ignore creating focc and proceed with normal
1390 if (RHC_DONE == rhc->state)
1398 * Forwards the overlay connect request to a slave controller. Before
1399 * forwarding, any hosts which are needed to be known by the slave controller to
1400 * execute the overlay connect request are registered at slave.
1402 * @param msg the overlay connect request message to be forwarded
1403 * @param client the client to which the status of the forwarded request has to
1407 forward_overlay_connect (const struct GNUNET_TESTBED_OverlayConnectMessage *msg,
1408 struct GNUNET_SERVICE_Client *client)
1410 struct ForwardedOperationContext *fopc;
1411 struct Route *route_to_peer2_host;
1412 struct Route *route_to_peer1_host;
1414 struct RegisteredHostContext *rhc;
1415 struct ForwardedOverlayConnectContext *focc;
1417 uint32_t peer2_host_id;
1421 p1 = ntohl (msg->peer1);
1422 p2 = ntohl (msg->peer2);
1423 op_id = GNUNET_ntohll (msg->operation_id);
1424 peer2_host_id = ntohl (msg->peer2_host_id);
1425 GNUNET_assert (VALID_PEER_ID (p1));
1426 GNUNET_assert (VALID_HOST_ID (peer2_host_id));
1427 peer = GST_peer_list[p1];
1428 GNUNET_assert (GNUNET_YES == peer->is_remote);
1429 LOG_DEBUG ("0x%llx: Forwarding overlay connect\n", op_id);
1430 route_to_peer2_host = GST_find_dest_route (peer2_host_id);
1431 route_to_peer1_host = GST_find_dest_route
1432 (peer->details.remote.remote_host_id);
1433 GNUNET_assert (NULL != route_to_peer1_host);
1434 if ((NULL != route_to_peer2_host) &&
1435 (route_to_peer1_host->dest == route_to_peer2_host->dest))
1437 /* Peer2 is either with us OR peer1 and peer2 can be reached through
1438 different subtrees OR peer2 is on a subtree unknown to us */
1439 if (NULL != (rhc = register_host (peer->details.remote.slave,
1440 GST_host_list[peer2_host_id])))
1442 LOG_DEBUG ("Queueing forwarding FOCC for connecting peers %u and %u\n", p1,
1444 focc = GNUNET_new (struct ForwardedOverlayConnectContext);
1448 focc->peer2_host_id = peer2_host_id;
1449 focc->orig_msg = GNUNET_copy_message (&msg->header);
1450 focc->operation_id = op_id;
1451 focc->client = client;
1452 GNUNET_CONTAINER_DLL_insert_tail (rhc->focc_dll_head,
1459 LOG_DEBUG ("Forwarding without FOCC for connecting peers %u and %u\n", p1,
1461 fopc = GNUNET_new (struct ForwardedOperationContext);
1462 fopc->client = client;
1463 fopc->operation_id = op_id;
1464 fopc->type = OP_OVERLAY_CONNECT;
1466 GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.
1467 slave->controller, op_id,
1469 &GST_forwarded_operation_reply_relay,
1471 fopc->timeout_task =
1472 GNUNET_SCHEDULER_add_delayed (GST_timeout,
1473 &GST_forwarded_operation_timeout,
1475 GNUNET_CONTAINER_DLL_insert_tail (fopcq_head,
1482 * Callback called when a connection to the controller of peer2 has been
1485 * @param cls the overlay connect contexts
1486 * @param c handle to the controller connection
1489 p2_controller_connect_cb (void *cls,
1490 struct GNUNET_TESTBED_Controller *c)
1492 struct OverlayConnectContext *occ = cls;
1493 struct RemotePeer2Context *rp2c;
1494 struct GNUNET_TESTBED_PeerGetConfigurationMessage cmsg;
1496 GNUNET_assert (OCC_TYPE_LOCAL != occ->type);
1497 rp2c = &occ->p2ctx.remote;
1501 htons (sizeof(struct GNUNET_TESTBED_PeerGetConfigurationMessage));
1503 htons (GNUNET_MESSAGE_TYPE_TESTBED_GET_PEER_INFORMATION);
1504 cmsg.peer_id = htonl (occ->other_peer_id);
1505 cmsg.operation_id = GNUNET_htonll (occ->op_id);
1507 GNUNET_TESTBED_forward_operation_msg_ (rp2c->p2c,
1510 &overlay_connect_get_config,
1512 GNUNET_free_non_null (occ->emsg);
1513 GNUNET_asprintf (&occ->emsg,
1514 "0x%llx: Timeout while getting peer identity of peer "
1517 occ->other_peer_id);
1522 * Handler for #GNUNET_MESSAGE_TYPE_TESTBED_OVERLAY_CONNECT messages
1524 * @param cls identification of the client
1525 * @param msg the actual message
1528 handle_overlay_connect (void *cls,
1529 const struct GNUNET_TESTBED_OverlayConnectMessage *msg)
1531 struct GNUNET_SERVICE_Client *client = cls;
1534 struct OverlayConnectContext *occ;
1535 struct Neighbour *p2n;
1536 uint64_t operation_id;
1539 uint32_t peer2_host_id;
1541 p1 = ntohl (msg->peer1);
1542 p2 = ntohl (msg->peer2);
1543 if (! VALID_PEER_ID (p1))
1546 GNUNET_SERVICE_client_drop (client);
1549 peer = GST_peer_list[p1];
1550 operation_id = GNUNET_ntohll (msg->operation_id);
1552 ("Received overlay connect for peers %u and %u with op id: 0x%llx\n",
1556 peer2_host_id = ntohl (msg->peer2_host_id);
1557 if (GNUNET_YES == peer->is_remote)
1559 if (! VALID_HOST_ID (peer2_host_id))
1562 GNUNET_SERVICE_client_drop (client);
1565 forward_overlay_connect (msg, client);
1566 GNUNET_SERVICE_client_continue (client);
1570 occ = GNUNET_new (struct OverlayConnectContext);
1571 occ->type = OCC_TYPE_LOCAL;
1572 if (! VALID_PEER_ID (p2)) /* May be peer2 is on a another controller */
1574 if (NULL == (p2n = GST_get_neighbour (peer2_host_id)))
1576 if (! VALID_HOST_ID (peer2_host_id))
1579 LOG (GNUNET_ERROR_TYPE_WARNING,
1580 "0x%llx: Peer %u's host not in our neighbours list\n",
1582 GNUNET_SERVICE_client_drop (client);
1586 p2n = GST_create_neighbour (GST_host_list[peer2_host_id]);
1588 occ->type = OCC_TYPE_REMOTE_LATERAL;
1589 occ->p2ctx.remote.p2n = p2n;
1591 else if (GNUNET_YES == GST_peer_list[p2]->is_remote)
1593 occ->type = OCC_TYPE_REMOTE_SLAVE;
1594 occ->p2ctx.remote.p2c = GST_peer_list[p2]->details.remote.slave->controller;
1596 GNUNET_CONTAINER_DLL_insert_tail (occq_head,
1599 occ->client = client;
1600 occ->other_peer_id = p2;
1601 GST_peer_list[p1]->reference_cnt++;
1602 occ->peer = GST_peer_list[p1];
1603 occ->op_id = operation_id;
1604 GNUNET_assert (NULL == occ->timeout_task);
1606 GNUNET_SCHEDULER_add_delayed (GST_timeout,
1607 &timeout_overlay_connect,
1611 case OCC_TYPE_REMOTE_LATERAL:
1612 GNUNET_asprintf (&occ->emsg,
1613 "0x%llx: Timeout while acquiring connection to peer %u's "
1618 occ->p2ctx.remote.ncn
1619 = GST_neighbour_get_connection (p2n,
1620 &p2_controller_connect_cb,
1624 case OCC_TYPE_REMOTE_SLAVE:
1625 p2_controller_connect_cb (occ,
1626 occ->p2ctx.remote.p2c);
1629 case OCC_TYPE_LOCAL:
1630 peer2 = GST_peer_list[occ->other_peer_id];
1631 peer2->reference_cnt++;
1632 GNUNET_TESTING_peer_get_identity (peer2->details.local.peer,
1633 &occ->other_peer_identity);
1634 GNUNET_asprintf (&occ->emsg,
1635 "0x%llx: Timeout while connecting to CORE of peer with "
1640 GST_connection_pool_get_handle (occ->peer->id,
1641 occ->peer->details.local.cfg,
1642 GST_CONNECTIONPOOL_SERVICE_CORE,
1643 occ_cache_get_handle_core_cb, occ,
1644 &occ->other_peer_identity,
1645 &overlay_connect_notify, occ);
1648 GNUNET_SERVICE_client_continue (client);
1653 * Function to cleanup RemoteOverlayConnectCtx and any associated tasks
1656 * @param rocc the RemoteOverlayConnectCtx
1659 cleanup_rocc (struct RemoteOverlayConnectCtx *rocc)
1661 LOG_DEBUG ("0x%llx: Cleaning up rocc\n",
1663 if (NULL != rocc->attempt_connect_task_id)
1664 GNUNET_SCHEDULER_cancel (rocc->attempt_connect_task_id);
1665 if (NULL != rocc->timeout_rocc_task_id)
1666 GNUNET_SCHEDULER_cancel (rocc->timeout_rocc_task_id);
1667 if (NULL != rocc->ohh)
1668 GNUNET_TRANSPORT_offer_hello_cancel (rocc->ohh);
1669 if (NULL != rocc->tcc.csh)
1670 GNUNET_ATS_connectivity_suggest_cancel (rocc->tcc.csh);
1671 GST_connection_pool_get_handle_done (rocc->tcc.cgh_p2_th);
1672 GST_connection_pool_get_handle_done (rocc->tcc.cgh_p2_ats);
1673 GNUNET_assert (rocc->peer->reference_cnt > 0);
1674 rocc->peer->reference_cnt--;
1675 if ((GNUNET_YES == rocc->peer->destroy_flag) &&
1676 (0 == rocc->peer->reference_cnt))
1677 GST_destroy_peer (rocc->peer);
1678 GNUNET_free_non_null (rocc->hello);
1679 GNUNET_CONTAINER_DLL_remove (roccq_head,
1687 * Task to timeout rocc and cleanit up
1689 * @param cls the RemoteOverlayConnectCtx
1692 timeout_rocc_task (void *cls)
1694 struct RemoteOverlayConnectCtx *rocc = cls;
1696 GNUNET_assert (rocc->timeout_rocc_task_id != NULL);
1697 rocc->timeout_rocc_task_id = NULL;
1698 LOG_DEBUG ("0x%llx: rocc timed out\n",
1700 cleanup_rocc (rocc);
1705 * Function called to notify transport users that another
1706 * peer connected to us.
1708 * @param cls the RemoteOverlayConnectContext
1709 * @param new_peer the peer that connected
1712 cache_transport_peer_connect_notify (void *cls,
1713 const struct GNUNET_PeerIdentity *new_peer)
1715 struct RemoteOverlayConnectCtx *rocc = cls;
1717 LOG_DEBUG ("0x%llx: Request Overlay connect notify\n",
1720 memcmp (new_peer, &rocc->a_id,
1721 sizeof(struct GNUNET_PeerIdentity)));
1722 LOG_DEBUG ("0x%llx: Peer %s connected\n",
1724 GNUNET_i2s (&rocc->a_id));
1725 cleanup_rocc (rocc);
1730 * Task to offer the HELLO message to the peer and ask it to connect to the peer
1731 * whose identity is in RemoteOverlayConnectCtx
1733 * @param cls the RemoteOverlayConnectCtx
1736 attempt_connect_task (void *cls);
1740 * Task that is run when hello has been sent If tc->reason =
1741 * #GNUNET_SCHEDULER_REASON_TIMEOUT then sending HELLO failed; if
1742 * #GNUNET_SCHEDULER_REASON_READ_READY is succeeded
1744 * @param cls the overlay connect context
1747 rocc_hello_sent_cb (void *cls)
1749 struct RemoteOverlayConnectCtx *rocc = cls;
1752 GNUNET_assert (NULL == rocc->attempt_connect_task_id);
1753 LOG_DEBUG ("0x%llx: HELLO of peer %s delivered to local peer with id: %u\n",
1755 GNUNET_i2s (&rocc->a_id),
1757 rocc->tcc.cgh_p2_ats =
1758 GST_connection_pool_get_handle (rocc->peer->id,
1759 rocc->peer->details.local.cfg,
1760 GST_CONNECTIONPOOL_SERVICE_ATS_CONNECTIVITY,
1761 &occ_cache_get_handle_ats_rocc_cb,
1762 rocc, NULL, NULL, NULL);
1767 * Task to offer the HELLO message to the peer and ask it to connect to the peer
1768 * whose identity is in RemoteOverlayConnectCtx
1770 * @param cls the RemoteOverlayConnectCtx
1773 attempt_connect_task (void *cls)
1775 struct RemoteOverlayConnectCtx *rocc = cls;
1777 GNUNET_assert (NULL != rocc->attempt_connect_task_id);
1778 rocc->attempt_connect_task_id = NULL;
1779 LOG_DEBUG ("0x%llx: Offering HELLO of peer %s to remote peer with id: %u\n",
1781 GNUNET_i2s (&rocc->a_id),
1784 GNUNET_TRANSPORT_offer_hello (rocc->tcc.cfg,
1786 &rocc_hello_sent_cb,
1788 if (NULL == rocc->ohh)
1789 rocc->attempt_connect_task_id =
1790 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
1791 (GNUNET_TIME_UNIT_MILLISECONDS,
1793 + GNUNET_CRYPTO_random_u32
1794 (GNUNET_CRYPTO_QUALITY_WEAK, 500)),
1795 &attempt_connect_task, rocc);
1800 * Callback from cache with needed handles set
1802 * @param cls the closure passed to GST_cache_get_handle_transport()
1803 * @param ch the handle to CORE. Can be NULL if it is not requested
1804 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
1805 * @param ac the handle to ATS. Can be NULL if it is not requested
1806 * @param ignore_ peer identity which is ignored in this callback
1809 rocc_cache_get_handle_transport_cb (void *cls,
1810 struct GNUNET_CORE_Handle *ch,
1811 struct GNUNET_TRANSPORT_CoreHandle *th,
1812 struct GNUNET_ATS_ConnectivityHandle *ac,
1813 const struct GNUNET_PeerIdentity *ignore_,
1815 GNUNET_CONFIGURATION_Handle *cfg)
1817 struct RemoteOverlayConnectCtx *rocc = cls;
1821 rocc->timeout_rocc_task_id =
1822 GNUNET_SCHEDULER_add_now (&timeout_rocc_task, rocc);
1826 rocc->tcc.cfg = cfg;
1828 GNUNET_TRANSPORT_core_get_mq (rocc->tcc.th_,
1831 LOG_DEBUG ("0x%llx: Target peer %s already connected to local peer: %u\n",
1833 GNUNET_i2s (&rocc->a_id),
1835 cleanup_rocc (rocc);
1838 rocc->attempt_connect_task_id =
1839 GNUNET_SCHEDULER_add_now (&attempt_connect_task, rocc);
1844 * Check #GNUNET_MESSAGE_TYPE_TESTBED_REMOTE_OVERLAY_CONNECT messages
1846 * @param cls identification of the client
1847 * @param msg the actual message
1848 * @return #GNUNET_OK if @a msg is well-formed
1851 check_remote_overlay_connect (void *cls,
1853 GNUNET_TESTBED_RemoteOverlayConnectMessage *msg)
1859 msize = ntohs (msg->header.size);
1860 if (GNUNET_MESSAGE_TYPE_HELLO != ntohs (msg->hello->type))
1863 return GNUNET_SYSERR;
1865 hsize = ntohs (msg->hello->size);
1866 if ((sizeof(struct GNUNET_TESTBED_RemoteOverlayConnectMessage) + hsize) !=
1870 return GNUNET_SYSERR;
1872 peer_id = ntohl (msg->peer);
1873 if ((peer_id >= GST_peer_list_size) ||
1874 (NULL == GST_peer_list[peer_id]))
1876 GNUNET_break_op (0);
1877 return GNUNET_SYSERR;
1884 * Handler for #GNUNET_MESSAGE_TYPE_TESTBED_REMOTE_OVERLAY_CONNECT messages
1886 * @param cls identification of the client
1887 * @param msg the actual message
1890 handle_remote_overlay_connect (void *cls,
1892 GNUNET_TESTBED_RemoteOverlayConnectMessage *msg)
1894 struct GNUNET_SERVICE_Client *client = cls;
1895 struct RemoteOverlayConnectCtx *rocc;
1897 struct GNUNET_PeerIdentity pid;
1898 static char pid_str[16];
1902 hsize = ntohs (msg->hello->size);
1903 peer_id = ntohl (msg->peer);
1904 peer = GST_peer_list[peer_id];
1905 if (GNUNET_YES == peer->is_remote)
1907 struct GNUNET_MessageHeader *msg2;
1909 msg2 = GNUNET_copy_message (&msg->header);
1910 GNUNET_TESTBED_queue_message_ (peer->details.remote.slave->controller,
1912 GNUNET_SERVICE_client_continue (client);
1915 rocc = GNUNET_new (struct RemoteOverlayConnectCtx);
1916 rocc->op_id = GNUNET_ntohll (msg->operation_id);
1917 GNUNET_CONTAINER_DLL_insert_tail (roccq_head,
1920 rocc->a_id = msg->peer_identity;
1921 GNUNET_TESTING_peer_get_identity (peer->details.local.peer,
1923 (void) GNUNET_strlcpy (pid_str,
1927 "0x%llx: Remote overlay connect %s to peer %s with hello size: %u\n",
1930 GNUNET_i2s (&rocc->a_id),
1933 rocc->peer->reference_cnt++;
1934 rocc->hello = GNUNET_malloc (hsize);
1935 GNUNET_memcpy (rocc->hello,
1938 rocc->tcc.cgh_p2_th =
1939 GST_connection_pool_get_handle (peer_id,
1940 rocc->peer->details.local.cfg,
1941 GST_CONNECTIONPOOL_SERVICE_TRANSPORT,
1942 &rocc_cache_get_handle_transport_cb,
1945 &cache_transport_peer_connect_notify,
1947 rocc->timeout_rocc_task_id =
1948 GNUNET_SCHEDULER_add_delayed (GST_timeout,
1951 GNUNET_SERVICE_client_continue (client);
1956 * Clears all pending overlay connect contexts in queue
1961 struct OverlayConnectContext *occ;
1963 while (NULL != (occ = occq_head))
1969 * Clears all pending remote overlay connect contexts in queue
1974 struct RemoteOverlayConnectCtx *rocc;
1976 while (NULL != (rocc = roccq_head))
1977 cleanup_rocc (rocc);