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3 (C) 2012 Christian Grothoff (and other contributing authors)
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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"
30 * Redefine LOG with a changed log component string
35 #define LOG(kind,...) \
36 GNUNET_log_from (kind, "testbed-OC", __VA_ARGS__)
40 * Context information for requesting TRANSPORT to connect to a peer
42 struct TryConnectContext
45 * The identity of the peer to which the transport has to attempt a connection
47 struct GNUNET_PeerIdentity *pid;
50 * The transport handle obtained from cache. Do NOT close/disconnect.
52 struct GNUNET_TRANSPORT_Handle *th_;
55 * The GetCacheHandle for the p1th transport handle
57 struct GSTCacheGetHandle *cgh_th;
60 * the try connect handle
62 struct GNUNET_TRANSPORT_TryConnectHandle *tch;
67 GNUNET_SCHEDULER_TaskIdentifier task;
70 * The id of the operation which is resposible for this context
75 * The number of times we attempted to connect
83 * Context information for connecting 2 peers in overlay.
85 struct OverlayConnectContext
88 * The next pointer for maintaining a DLL of all OverlayConnectContexts
90 struct OverlayConnectContext *next;
93 * The prev pointer for maintaining a DLL of all OverlayConnectContexts
95 struct OverlayConnectContext *prev;
98 * The client which has requested for overlay connection. This is used to send
99 * either a success of failure message
101 struct GNUNET_SERVER_Client *client;
104 * the first peer which is to expect an overlay connection from the second peer.
109 * Transport handle of the first peer obtained from cache to get its HELLO. Do
110 * NOT close/disconnect.
112 struct GNUNET_TRANSPORT_Handle *p1th_;
115 * The CacheGetHandle for the p1th transport handle
117 struct GSTCacheGetHandle *cgh_p1th;
120 * The GetCacheHandle for registering callback to notify CORE level peer
121 * connects and to get our identity.
123 struct GSTCacheGetHandle *cgh_ch;
126 * HELLO of the first peer. This should be sent to the second peer.
128 struct GNUNET_MessageHeader *hello;
131 * Get GetHelloHandle to acquire a HELLO of the first peer
133 struct GNUNET_TRANSPORT_GetHelloHandle *ghh;
136 * The handle for offering the HELLO of the first peer to the second
137 * peer. This is only used if the second peer is a local peer.
139 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh;
142 * The error message we send if this overlay connect operation has timed out
147 * Operation context for the suboperation we start to get the identity of the
148 * second peer if it is a remote peer
150 struct OperationContext *opc;
153 * Controller of peer 2; NULL if the peer is a local peer
155 struct GNUNET_TESTBED_Controller *peer2_controller;
158 * The transport TryConnectContext. This will be NULL if the second peer is a
161 struct TryConnectContext tcc;
164 * The peer identity of the first peer
166 struct GNUNET_PeerIdentity peer_identity;
169 * The peer identity of the other peer
171 struct GNUNET_PeerIdentity other_peer_identity;
174 * The id of the operation responsible for creating this context
179 * The id of the task for sending HELLO of peer 2 to peer 1 and ask peer 1 to
182 GNUNET_SCHEDULER_TaskIdentifier send_hello_task;
185 * The id of the overlay connect timeout task
187 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
190 * The id of the cleanup task
192 GNUNET_SCHEDULER_TaskIdentifier cleanup_task;
202 uint32_t other_peer_id;
208 * Context information for remote overlay connect operations. Remote overlay
209 * connections are used when peers A and B reside on different hosts. In these
210 * operations the host controller for peer B is asked by the host controller of
211 * peer A to make peer B connect to peer A by sending the controller of peer B
212 * the HELLO of peer A.
214 struct RemoteOverlayConnectCtx
217 * the next pointer for DLL
219 struct RemoteOverlayConnectCtx *next;
222 * the prev pointer for DLL
224 struct RemoteOverlayConnectCtx *prev;
227 * The peer handle of peer B
234 struct GNUNET_MessageHeader *hello;
237 * The handle for offering HELLO
239 struct GNUNET_TRANSPORT_OfferHelloHandle *ohh;
242 * The transport try connect context
244 struct TryConnectContext tcc;
247 * The peer identity of peer A
249 struct GNUNET_PeerIdentity a_id;
252 * Task for offering HELLO of A to B and doing try_connect
254 GNUNET_SCHEDULER_TaskIdentifier attempt_connect_task_id;
257 * Task to timeout RequestOverlayConnect
259 GNUNET_SCHEDULER_TaskIdentifier timeout_rocc_task_id;
262 * The id of the operation responsible for creating this context
269 * DLL head for OverlayConnectContext DLL - to be used to clean up during shutdown
271 static struct OverlayConnectContext *occq_head;
274 * DLL tail for OverlayConnectContext DLL
276 static struct OverlayConnectContext *occq_tail;
279 * DLL head for RequectOverlayConnectContext DLL - to be used to clean up during
282 static struct RemoteOverlayConnectCtx *roccq_head;
285 * DLL tail for RequectOverlayConnectContext DLL
287 static struct RemoteOverlayConnectCtx *roccq_tail;
291 * Cleans up ForwardedOverlayConnectContext
293 * @param focc the ForwardedOverlayConnectContext to cleanup
296 GST_cleanup_focc (struct ForwardedOverlayConnectContext *focc)
298 GNUNET_free_non_null (focc->orig_msg);
304 * Timeout task for cancelling a forwarded overlay connect connect
306 * @param cls the ForwardedOverlayConnectContext
307 * @param tc the task context from the scheduler
310 forwarded_overlay_connect_timeout (void *cls,
311 const struct GNUNET_SCHEDULER_TaskContext
314 struct ForwardedOperationContext *fopc = cls;
315 struct RegisteredHostContext *rhc;
316 struct ForwardedOverlayConnectContext *focc;
319 focc = rhc->focc_dll_head;
320 GNUNET_CONTAINER_DLL_remove (rhc->focc_dll_head, rhc->focc_dll_tail, focc);
321 GST_cleanup_focc (focc);
322 LOG_DEBUG ("Overlay linking between peers %u and %u failed\n", focc->peer1,
324 GST_forwarded_operation_timeout (cls, tc);
325 if (NULL != rhc->focc_dll_head)
326 GST_process_next_focc (rhc);
331 * Callback to be called when forwarded overlay connection operation has a reply
332 * from the sub-controller successfull. We have to relay the reply msg back to
335 * @param cls ForwardedOperationContext
336 * @param msg the peer create success message
339 forwarded_overlay_connect_listener (void *cls,
340 const struct GNUNET_MessageHeader *msg)
342 struct ForwardedOperationContext *fopc = cls;
343 struct RegisteredHostContext *rhc;
344 struct ForwardedOverlayConnectContext *focc;
347 GST_forwarded_operation_reply_relay (cls, msg);
348 focc = rhc->focc_dll_head;
349 GNUNET_CONTAINER_DLL_remove (rhc->focc_dll_head, rhc->focc_dll_tail, focc);
350 GST_cleanup_focc (focc);
351 if (NULL != rhc->focc_dll_head)
352 GST_process_next_focc (rhc);
357 * Processes a forwarded overlay connect context in the queue of the given RegisteredHostContext
359 * @param rhc the RegisteredHostContext
362 GST_process_next_focc (struct RegisteredHostContext *rhc)
364 struct ForwardedOperationContext *fopc;
365 struct ForwardedOverlayConnectContext *focc;
367 focc = rhc->focc_dll_head;
368 GNUNET_assert (NULL != focc);
369 GNUNET_assert (RHC_OL_CONNECT == rhc->state);
370 fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
371 GNUNET_SERVER_client_keep (rhc->client);
372 fopc->client = rhc->client;
373 fopc->operation_id = focc->operation_id;
375 fopc->type = OP_OVERLAY_CONNECT;
377 GNUNET_TESTBED_forward_operation_msg_ (rhc->gateway->controller,
378 focc->operation_id, focc->orig_msg,
379 &forwarded_overlay_connect_listener,
381 GNUNET_free (focc->orig_msg);
382 focc->orig_msg = NULL;
384 GNUNET_SCHEDULER_add_delayed (GST_timeout, &forwarded_overlay_connect_timeout,
386 GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fopc);
391 * Cleanup overlay connect context structure
393 * @param occ the overlay connect context
396 cleanup_occ (struct OverlayConnectContext *occ)
398 LOG_DEBUG ("0x%llx: Cleaning up occ\n", occ->op_id);
399 GNUNET_free_non_null (occ->emsg);
400 GNUNET_free_non_null (occ->hello);
401 GNUNET_SERVER_client_drop (occ->client);
402 if (NULL != occ->opc)
403 GNUNET_TESTBED_forward_operation_msg_cancel_ (occ->opc);
404 if (GNUNET_SCHEDULER_NO_TASK != occ->send_hello_task)
405 GNUNET_SCHEDULER_cancel (occ->send_hello_task);
406 if (GNUNET_SCHEDULER_NO_TASK != occ->cleanup_task)
407 GNUNET_SCHEDULER_cancel (occ->cleanup_task);
408 if (GNUNET_SCHEDULER_NO_TASK != occ->timeout_task)
409 GNUNET_SCHEDULER_cancel (occ->timeout_task);
410 if (NULL != occ->cgh_ch)
412 GST_cache_get_handle_done (occ->cgh_ch);
413 occ->peer->reference_cnt--;
415 if (NULL != occ->ghh)
416 GNUNET_TRANSPORT_get_hello_cancel (occ->ghh);
417 if (NULL != occ->ohh)
418 GNUNET_TRANSPORT_offer_hello_cancel (occ->ohh);
419 if (GNUNET_SCHEDULER_NO_TASK != occ->tcc.task)
420 GNUNET_SCHEDULER_cancel (occ->tcc.task);
421 if (NULL != occ->tcc.tch)
422 GNUNET_TRANSPORT_try_connect_cancel (occ->tcc.tch);
423 if (NULL != occ->cgh_p1th)
425 GST_cache_get_handle_done (occ->cgh_p1th);
426 occ->peer->reference_cnt--;
428 if (NULL != occ->tcc.cgh_th)
430 GST_cache_get_handle_done (occ->tcc.cgh_th);
431 GST_peer_list[occ->other_peer_id]->reference_cnt--;
433 if ((GNUNET_YES == occ->peer->destroy_flag) &&
434 (0 == occ->peer->reference_cnt))
435 GST_destroy_peer (occ->peer);
436 if ((NULL == occ->peer2_controller) &&
437 (GNUNET_YES == GST_peer_list[occ->other_peer_id]->destroy_flag) &&
438 (0 == GST_peer_list[occ->other_peer_id]->reference_cnt))
439 GST_destroy_peer (GST_peer_list[occ->other_peer_id]);
440 GNUNET_CONTAINER_DLL_remove (occq_head, occq_tail, occ);
446 * Task for cleaing up overlay connect context structure
448 * @param cls the overlay connect context
449 * @param tc the task context
452 do_cleanup_occ (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
454 struct OverlayConnectContext *occ = cls;
456 occ->cleanup_task = GNUNET_SCHEDULER_NO_TASK;
462 * Task which will be run when overlay connect request has been timed out
464 * @param cls the OverlayConnectContext
465 * @param tc the TaskContext
468 timeout_overlay_connect (void *cls,
469 const struct GNUNET_SCHEDULER_TaskContext *tc)
471 struct OverlayConnectContext *occ = cls;
473 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != occ->timeout_task);
474 occ->timeout_task = GNUNET_SCHEDULER_NO_TASK;
475 LOG (GNUNET_ERROR_TYPE_WARNING,
476 "0x%llx: Timeout while connecting peers %u and %u\n", occ->op_id,
477 occ->peer_id, occ->other_peer_id);
478 GST_send_operation_fail_msg (occ->client, occ->op_id, occ->emsg);
484 send_overlay_connect_success_msg (struct OverlayConnectContext *occ)
486 struct GNUNET_TESTBED_ConnectionEventMessage *msg;
488 LOG_DEBUG ("0x%llx: Peers connected - Sending overlay connect success\n",
490 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ConnectionEventMessage));
492 htons (sizeof (struct GNUNET_TESTBED_ConnectionEventMessage));
493 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEER_CONNECT_EVENT);
494 msg->event_type = htonl (GNUNET_TESTBED_ET_CONNECT);
495 msg->peer1 = htonl (occ->peer_id);
496 msg->peer2 = htonl (occ->other_peer_id);
497 msg->operation_id = GNUNET_htonll (occ->op_id);
498 GST_queue_message (occ->client, &msg->header);
503 * Function called to notify transport users that another
504 * peer connected to us.
507 * @param new_peer the peer that connected
510 overlay_connect_notify (void *cls, const struct GNUNET_PeerIdentity *new_peer)
512 struct OverlayConnectContext *occ = cls;
514 char *other_peer_str;
516 //LOG_DEBUG ("Overlay connect notify\n");
518 memcmp (new_peer, &occ->peer_identity,
519 sizeof (struct GNUNET_PeerIdentity)))
521 new_peer_str = GNUNET_strdup (GNUNET_i2s (new_peer));
522 other_peer_str = GNUNET_strdup (GNUNET_i2s (&occ->other_peer_identity));
524 memcmp (new_peer, &occ->other_peer_identity,
525 sizeof (struct GNUNET_PeerIdentity)))
527 /* LOG_DEBUG ("Unexpected peer %4s connected when expecting peer %4s\n", */
528 /* new_peer_str, other_peer_str); */
529 GNUNET_free (new_peer_str);
530 GNUNET_free (other_peer_str);
533 GNUNET_free (new_peer_str);
534 LOG_DEBUG ("0x%llx: Peer %4s connected to peer %4s\n", occ->op_id,
535 other_peer_str, GNUNET_i2s (&occ->peer_identity));
536 GNUNET_free (other_peer_str);
537 if (GNUNET_SCHEDULER_NO_TASK != occ->send_hello_task)
539 GNUNET_SCHEDULER_cancel (occ->send_hello_task);
540 occ->send_hello_task = GNUNET_SCHEDULER_NO_TASK;
542 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != occ->timeout_task);
543 GNUNET_SCHEDULER_cancel (occ->timeout_task);
544 occ->timeout_task = GNUNET_SCHEDULER_NO_TASK;
545 if (GNUNET_SCHEDULER_NO_TASK != occ->tcc.task)
547 GNUNET_SCHEDULER_cancel (occ->tcc.task);
548 occ->tcc.task = GNUNET_SCHEDULER_NO_TASK;
550 GNUNET_free_non_null (occ->emsg);
552 send_overlay_connect_success_msg (occ);
553 occ->cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup_occ, occ);
559 * Task to ask transport of a peer to connect to another peer
561 * @param cls the TryConnectContext
562 * @param tc the scheduler task context
565 try_connect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
569 * Callback to be called with result of the try connect request.
571 * @param cls the overlay connect context
572 * @param result GNUNET_OK if message was transmitted to transport service
573 * GNUNET_SYSERR if message was not transmitted to transport service
576 try_connect_cb (void *cls, const int result)
578 struct TryConnectContext *tcc = cls;
581 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == tcc->task);
583 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
584 (GNUNET_TIME_UNIT_MILLISECONDS,
585 500 + pow (2, ++tcc->retries)),
586 &try_connect_task, tcc);
591 * Task to ask transport of a peer to connect to another peer
593 * @param cls the TryConnectContext
594 * @param tc the scheduler task context
597 try_connect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
599 struct TryConnectContext *tcc = cls;
601 tcc->task = GNUNET_SCHEDULER_NO_TASK;
602 if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
604 GNUNET_assert (NULL == tcc->tch);
605 GNUNET_assert (NULL != tcc->pid);
606 GNUNET_assert (NULL != tcc->th_);
607 GNUNET_assert (NULL != tcc->cgh_th);
608 LOG_DEBUG ("0x%llx: Trail %u to connect to peer %s\n", tcc->op_id,
609 tcc->retries, GNUNET_i2s (tcc->pid));
611 GNUNET_TRANSPORT_try_connect (tcc->th_, tcc->pid, &try_connect_cb, tcc);
616 * Task to offer HELLO of peer 1 to peer 2 and try to make peer 2 to connect to
619 * @param cls the OverlayConnectContext
620 * @param tc the TaskContext from scheduler
623 send_hello (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
627 * Task that is run when hello has been sent
629 * @param cls the overlay connect context
630 * @param tc the scheduler task context; if tc->reason =
631 * GNUNET_SCHEDULER_REASON_TIMEOUT then sending HELLO failed; if
632 * GNUNET_SCHEDULER_REASON_READ_READY is succeeded
635 occ_hello_sent_cb (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
637 struct OverlayConnectContext *occ = cls;
640 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == occ->send_hello_task);
641 if (GNUNET_SCHEDULER_REASON_TIMEOUT == tc->reason)
643 GNUNET_free_non_null (occ->emsg);
644 GNUNET_asprintf (&occ->emsg,
645 "0x%llx: Timeout while offering HELLO to other peer",
647 occ->send_hello_task = GNUNET_SCHEDULER_add_now (&send_hello, occ);
650 if (GNUNET_SCHEDULER_REASON_READ_READY != tc->reason)
652 GNUNET_free_non_null (occ->emsg);
653 GNUNET_asprintf (&occ->emsg, "0x%llx: Timeout while try connect", occ->op_id);
654 occ->tcc.pid = &occ->peer_identity;
655 occ->tcc.op_id = occ->op_id;
656 occ->tcc.task = GNUNET_SCHEDULER_add_now (&try_connect_task, &occ->tcc);
661 * Task to offer HELLO of peer 1 to peer 2 and try to make peer 2 to connect to
664 * @param cls the OverlayConnectContext
665 * @param tc the TaskContext from scheduler
668 send_hello (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
670 struct OverlayConnectContext *occ = cls;
671 char *other_peer_str;
673 occ->send_hello_task = GNUNET_SCHEDULER_NO_TASK;
674 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
676 GNUNET_assert (NULL != occ->hello);
677 other_peer_str = GNUNET_strdup (GNUNET_i2s (&occ->other_peer_identity));
678 if (NULL != occ->peer2_controller)
680 struct GNUNET_TESTBED_RemoteOverlayConnectMessage *msg;
684 LOG_DEBUG ("0x%llx: Offering HELLO of %s (size: %u) to %s via Remote "
685 "Overlay Request\n", occ->op_id,
686 GNUNET_i2s (&occ->peer_identity), ntohs (occ->hello->size),
688 hello_size = ntohs (occ->hello->size);
690 sizeof (struct GNUNET_TESTBED_RemoteOverlayConnectMessage) + hello_size;
691 msg = GNUNET_malloc (msize);
693 htons (GNUNET_MESSAGE_TYPE_TESTBED_REMOTE_OVERLAY_CONNECT);
694 msg->header.size = htons (msize);
695 msg->peer = htonl (occ->other_peer_id);
696 msg->operation_id = GNUNET_htonll (occ->op_id);
697 (void) memcpy (&msg->peer_identity, &occ->peer_identity,
698 sizeof (struct GNUNET_PeerIdentity));
699 memcpy (msg->hello, occ->hello, hello_size);
700 GNUNET_TESTBED_queue_message_ (occ->peer2_controller, &msg->header);
704 LOG_DEBUG ("0x%llx: Offering HELLO of %s to %s\n", occ->op_id,
705 GNUNET_i2s (&occ->peer_identity), other_peer_str);
707 GNUNET_TRANSPORT_offer_hello (occ->tcc.th_, occ->hello,
708 occ_hello_sent_cb, occ);
709 if (NULL == occ->ohh)
712 occ->send_hello_task =
713 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
714 (GNUNET_TIME_UNIT_MILLISECONDS,
716 GNUNET_CRYPTO_random_u32
717 (GNUNET_CRYPTO_QUALITY_WEAK, 500)),
721 GNUNET_free (other_peer_str);
726 * Callback from cache with needed handles set
728 * @param cls the closure passed to GST_cache_get_handle_transport()
729 * @param ch the handle to CORE. Can be NULL if it is not requested
730 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
731 * @param ignore_ peer identity which is ignored in this callback
734 p2_transport_connect_cache_callback (void *cls, struct GNUNET_CORE_Handle *ch,
735 struct GNUNET_TRANSPORT_Handle *th,
736 const struct GNUNET_PeerIdentity *ignore_)
738 struct OverlayConnectContext *occ = cls;
742 GNUNET_asprintf (&occ->emsg, "0x%llx: Cannot connect to TRANSPORT of %s",
743 occ->op_id, GNUNET_i2s (&occ->other_peer_identity));
744 GNUNET_SCHEDULER_cancel (occ->timeout_task);
746 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
750 GNUNET_asprintf (&occ->emsg, "0x%llx: Timeout while offering HELLO to %s",
751 occ->op_id, GNUNET_i2s (&occ->other_peer_identity));
752 occ->send_hello_task = GNUNET_SCHEDULER_add_now (&send_hello, occ);
757 * Connects to the transport of the other peer if it is a local peer and
758 * schedules the send hello task
760 * @param occ the overlay connect context
763 p2_transport_connect (struct OverlayConnectContext *occ)
765 GNUNET_assert (NULL == occ->emsg);
766 GNUNET_assert (NULL != occ->hello);
767 GNUNET_assert (NULL == occ->ghh);
768 GNUNET_assert (NULL == occ->p1th_);
769 GNUNET_assert (NULL == occ->cgh_p1th);
770 if (NULL == occ->peer2_controller)
772 GST_peer_list[occ->other_peer_id]->reference_cnt++;
774 GST_cache_get_handle_transport (occ->other_peer_id,
775 GST_peer_list[occ->other_peer_id]->
777 &p2_transport_connect_cache_callback,
778 occ, NULL, NULL, NULL);
781 GNUNET_asprintf (&occ->emsg, "0x%llx: Timeout while offering HELLO to %s",
782 occ->op_id, GNUNET_i2s (&occ->other_peer_identity));
783 occ->send_hello_task = GNUNET_SCHEDULER_add_now (&send_hello, occ);
788 * Test for checking whether HELLO message is empty
790 * @param cls empty flag to set
791 * @param address the HELLO
792 * @param expiration expiration of the HELLO
796 test_address (void *cls, const struct GNUNET_HELLO_Address *address,
797 struct GNUNET_TIME_Absolute expiration)
807 * Function called whenever there is an update to the HELLO of peers in the
808 * OverlayConnectClosure. If we have a valid HELLO, we connect to the peer 2's
809 * transport and offer peer 1's HELLO and ask peer 2 to connect to peer 1
812 * @param hello our updated HELLO
815 hello_update_cb (void *cls, const struct GNUNET_MessageHeader *hello)
817 struct OverlayConnectContext *occ = cls;
821 msize = ntohs (hello->size);
823 (void) GNUNET_HELLO_iterate_addresses ((const struct GNUNET_HELLO_Message *)
824 hello, GNUNET_NO, &test_address,
826 if (GNUNET_YES == empty)
828 LOG_DEBUG ("0x%llx: HELLO of %s is empty\n", occ->op_id,
829 GNUNET_i2s (&occ->peer_identity));
832 LOG_DEBUG ("0x%llx: Received HELLO of %s\n", occ->op_id,
833 GNUNET_i2s (&occ->peer_identity));
834 occ->hello = GNUNET_malloc (msize);
835 GST_cache_add_hello (occ->peer_id, hello);
836 memcpy (occ->hello, hello, msize);
837 GNUNET_TRANSPORT_get_hello_cancel (occ->ghh);
839 GST_cache_get_handle_done (occ->cgh_p1th);
840 occ->peer->reference_cnt--;
841 occ->cgh_p1th = NULL;
843 GNUNET_free_non_null (occ->emsg);
845 p2_transport_connect (occ);
850 * Callback from cache with needed handles set
852 * @param cls the closure passed to GST_cache_get_handle_transport()
853 * @param ch the handle to CORE. Can be NULL if it is not requested
854 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
855 * @param ignore_ peer identity which is ignored in this callback
858 p1_transport_connect_cache_callback (void *cls, struct GNUNET_CORE_Handle *ch,
859 struct GNUNET_TRANSPORT_Handle *th,
860 const struct GNUNET_PeerIdentity *ignore_)
862 struct OverlayConnectContext *occ = cls;
864 GNUNET_free_non_null (occ->emsg);
868 GNUNET_asprintf (&occ->emsg, "0x%llx: Cannot connect to TRANSPORT of %s",
869 occ->op_id, GNUNET_i2s (&occ->peer_identity));
870 GNUNET_SCHEDULER_cancel (occ->timeout_task);
872 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
875 GNUNET_assert (NULL == occ->p1th_);
876 GNUNET_assert (NULL != occ->cgh_p1th);
878 GNUNET_asprintf (&occ->emsg,
879 "0x%llx: Timeout while acquiring HELLO of peer %4s",
880 occ->op_id, GNUNET_i2s (&occ->peer_identity));
881 occ->ghh = GNUNET_TRANSPORT_get_hello (occ->p1th_, &hello_update_cb, occ);
886 * Callback from cache with needed handles set
888 * @param cls the closure passed to GST_cache_get_handle_transport()
889 * @param ch the handle to CORE. Can be NULL if it is not requested
890 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
891 * @param my_identity the identity of our peer
894 occ_cache_get_handle_core_cb (void *cls, struct GNUNET_CORE_Handle *ch,
895 struct GNUNET_TRANSPORT_Handle *th,
896 const struct GNUNET_PeerIdentity *my_identity)
898 struct OverlayConnectContext *occ = cls;
899 const struct GNUNET_MessageHeader *hello;
901 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != occ->timeout_task);
902 GNUNET_free_non_null (occ->emsg);
903 if ((NULL == ch) || (NULL == my_identity))
905 (void) GNUNET_asprintf (&occ->emsg,
906 "0x%llx: Failed to connect to CORE of peer with"
907 "id: %u", occ->op_id, occ->peer_id);
908 GNUNET_SCHEDULER_cancel (occ->timeout_task);
910 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
916 GNUNET_CORE_is_peer_connected_sync (ch, &occ->other_peer_identity))
918 LOG_DEBUG ("0x%llx: Target peer already connected\n", occ->op_id);
919 GNUNET_SCHEDULER_cancel (occ->timeout_task);
920 occ->timeout_task = GNUNET_SCHEDULER_NO_TASK;
921 send_overlay_connect_success_msg (occ);
922 occ->cleanup_task = GNUNET_SCHEDULER_add_now (&do_cleanup_occ, occ);
925 memcpy (&occ->peer_identity, my_identity,
926 sizeof (struct GNUNET_PeerIdentity));
927 LOG_DEBUG ("0x%llx: Acquiring HELLO of peer %s\n", occ->op_id,
928 GNUNET_i2s (&occ->peer_identity));
929 /* Lookup for HELLO in hello cache */
930 if (NULL != (hello = GST_cache_lookup_hello (occ->peer_id)))
932 LOG_DEBUG ("0x%llx: HELLO of peer %s found in cache\n", occ->op_id,
933 GNUNET_i2s (&occ->peer_identity));
934 occ->hello = GNUNET_copy_message (hello);
935 p2_transport_connect (occ);
938 GNUNET_asprintf (&occ->emsg,
939 "0x%llx: Timeout while acquiring TRANSPORT of %s from cache",
940 occ->op_id, GNUNET_i2s (&occ->peer_identity));
941 occ->peer->reference_cnt++;
943 GST_cache_get_handle_transport (occ->peer_id,
944 occ->peer->details.local.cfg,
945 p1_transport_connect_cache_callback, occ,
952 * Callback to be called when forwarded get peer config operation as part of
953 * overlay connect is successfull. Connection to Peer 1's core is made and is
954 * checked for new connection from peer 2
956 * @param cls ForwardedOperationContext
957 * @param msg the peer create success message
960 overlay_connect_get_config (void *cls, const struct GNUNET_MessageHeader *msg)
962 struct OverlayConnectContext *occ = cls;
963 const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *cmsg;
966 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != occ->timeout_task);
967 if (GNUNET_MESSAGE_TYPE_TESTBED_PEER_CONFIGURATION != ntohs (msg->type))
969 GNUNET_SCHEDULER_cancel (occ->timeout_task);
971 GNUNET_SCHEDULER_add_now (&timeout_overlay_connect, occ);
974 (const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *) msg;
975 memcpy (&occ->other_peer_identity, &cmsg->peer_identity,
976 sizeof (struct GNUNET_PeerIdentity));
977 GNUNET_free_non_null (occ->emsg);
978 GNUNET_asprintf (&occ->emsg,
979 "0x%llx: Timeout while connecting to CORE of peer with "
980 "id: %u", occ->op_id, occ->peer_id);
981 occ->peer->reference_cnt++;
983 GST_cache_get_handle_core (occ->peer_id, occ->peer->details.local.cfg,
984 occ_cache_get_handle_core_cb, occ,
985 &occ->other_peer_identity,
986 &overlay_connect_notify, occ);
992 * Callback which will be called to after a host registration succeeded or failed
994 * @param cls the RegisteredHostContext
995 * @param emsg the error message; NULL if host registration is successful
998 registeredhost_registration_completion (void *cls, const char *emsg)
1000 struct RegisteredHostContext *rhc = cls;
1001 struct GNUNET_CONFIGURATION_Handle *cfg;
1002 uint32_t peer2_host_id;
1004 /* if (NULL != rhc->focc_dll_head) */
1005 /* TESTBED_process_next_focc (rhc); */
1006 peer2_host_id = GNUNET_TESTBED_host_get_id_ (rhc->reg_host);
1007 GNUNET_assert (RHC_INIT == rhc->state);
1008 GNUNET_assert (NULL == rhc->sub_op);
1009 if ((NULL == rhc->gateway2) || ((peer2_host_id < GST_slave_list_size) /* Check if we have the needed config */
1010 && (NULL != GST_slave_list[peer2_host_id])))
1012 rhc->state = RHC_LINK;
1015 rhc->gateway2) ? our_config : GST_slave_list[peer2_host_id]->cfg;
1017 GNUNET_TESTBED_controller_link (rhc, rhc->gateway->controller,
1018 rhc->reg_host, rhc->host, cfg,
1022 rhc->state = RHC_GET_CFG;
1024 GNUNET_TESTBED_get_slave_config (rhc, rhc->gateway2->controller,
1030 * Iterator to match a registered host context
1032 * @param cls pointer 2 pointer of RegisteredHostContext
1033 * @param key current key code
1034 * @param value value in the hash map
1035 * @return GNUNET_YES if we should continue to
1040 reghost_match_iterator (void *cls, const struct GNUNET_HashCode *key,
1043 struct RegisteredHostContext **rh = cls;
1044 struct RegisteredHostContext *rh_val = value;
1046 if ((rh_val->host == (*rh)->host) && (rh_val->reg_host == (*rh)->reg_host))
1057 * Function to generate the hashcode corresponding to a RegisteredHostContext
1059 * @param reg_host the host which is being registered in RegisteredHostContext
1060 * @param host the host of the controller which has to connect to the above rhost
1061 * @return the hashcode
1063 static struct GNUNET_HashCode
1064 hash_hosts (struct GNUNET_TESTBED_Host *reg_host,
1065 struct GNUNET_TESTBED_Host *host)
1067 struct GNUNET_HashCode hash;
1068 uint32_t host_ids[2];
1070 host_ids[0] = GNUNET_TESTBED_host_get_id_ (reg_host);
1071 host_ids[1] = GNUNET_TESTBED_host_get_id_ (host);
1072 GNUNET_CRYPTO_hash (host_ids, sizeof (host_ids), &hash);
1078 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_OLCONNECT messages
1081 * @param client identification of the client
1082 * @param message the actual message
1085 GST_handle_overlay_connect (void *cls, struct GNUNET_SERVER_Client *client,
1086 const struct GNUNET_MessageHeader *message)
1088 const struct GNUNET_TESTBED_OverlayConnectMessage *msg;
1090 struct OverlayConnectContext *occ;
1091 struct GNUNET_TESTBED_Controller *peer2_controller;
1092 uint64_t operation_id;
1095 uint32_t peer2_host_id;
1097 if (sizeof (struct GNUNET_TESTBED_OverlayConnectMessage) !=
1098 ntohs (message->size))
1101 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1104 msg = (const struct GNUNET_TESTBED_OverlayConnectMessage *) message;
1105 p1 = ntohl (msg->peer1);
1106 p2 = ntohl (msg->peer2);
1107 if ((p1 >= GST_peer_list_size) || (NULL == GST_peer_list[p1]))
1110 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1113 peer = GST_peer_list[p1];
1114 peer2_host_id = ntohl (msg->peer2_host_id);
1115 operation_id = GNUNET_ntohll (msg->operation_id);
1117 ("Received overlay connect for peers %u and %u with op id: 0x%llx\n", p1,
1119 if (GNUNET_YES == peer->is_remote)
1121 struct ForwardedOperationContext *fopc;
1122 struct Route *route_to_peer2_host;
1123 struct Route *route_to_peer1_host;
1125 LOG_DEBUG ("0x%llx: Forwarding overlay connect\n", operation_id);
1126 route_to_peer2_host = NULL;
1127 route_to_peer1_host = NULL;
1128 route_to_peer2_host = GST_find_dest_route (peer2_host_id);
1129 if ((NULL != route_to_peer2_host) ||
1130 (peer2_host_id == GST_context->host_id))
1132 /* Peer 2 either below us OR with us */
1133 route_to_peer1_host =
1134 GST_find_dest_route (GST_peer_list[p1]->details.
1135 remote.remote_host_id);
1136 /* Because we get this message only if we know where peer 1 is */
1137 GNUNET_assert (NULL != route_to_peer1_host);
1138 if ((peer2_host_id == GST_context->host_id) ||
1139 (route_to_peer2_host->dest != route_to_peer1_host->dest))
1141 /* Peer2 is either with us OR peer1 and peer2 can be reached through
1142 * different gateways */
1143 struct GNUNET_HashCode hash;
1144 struct RegisteredHostContext *rhc;
1147 rhc = GNUNET_malloc (sizeof (struct RegisteredHostContext));
1148 if (NULL != route_to_peer2_host)
1149 rhc->reg_host = GST_host_list[route_to_peer2_host->dest];
1151 rhc->reg_host = GST_host_list[GST_context->host_id];
1152 rhc->host = GST_host_list[route_to_peer1_host->dest];
1153 GNUNET_assert (NULL != rhc->reg_host);
1154 GNUNET_assert (NULL != rhc->host);
1155 rhc->gateway = peer->details.remote.slave;
1158 route_to_peer2_host) ? NULL :
1159 GST_slave_list[route_to_peer2_host->dest];
1160 rhc->state = RHC_INIT;
1161 GNUNET_SERVER_client_keep (client);
1162 rhc->client = client;
1163 hash = hash_hosts (rhc->reg_host, rhc->host);
1164 skip_focc = GNUNET_NO;
1166 GNUNET_CONTAINER_multihashmap_contains (peer->details.
1167 remote.slave->reghost_map,
1170 GNUNET_CONTAINER_multihashmap_get_multiple (peer->details.remote.
1173 reghost_match_iterator,
1176 /* create and add a new registerd host context */
1177 /* add the focc to its queue */
1178 GNUNET_CONTAINER_multihashmap_put (peer->details.remote.
1179 slave->reghost_map, &hash, rhc,
1180 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
1181 GNUNET_assert (NULL != GST_host_list[peer2_host_id]);
1182 GST_queue_host_registration (peer->details.remote.slave,
1183 registeredhost_registration_completion,
1184 rhc, GST_host_list[peer2_host_id]);
1188 /* rhc is now set to the existing one from the hash map by
1189 * reghost_match_iterator() */
1190 /* if queue is empty then ignore creating focc and proceed with
1191 * normal forwarding */
1192 if (RHC_OL_CONNECT == rhc->state)
1193 skip_focc = GNUNET_YES;
1195 if (GNUNET_NO == skip_focc)
1197 struct ForwardedOverlayConnectContext *focc;
1199 focc = GNUNET_malloc (sizeof (struct ForwardedOverlayConnectContext));
1202 focc->peer2_host_id = peer2_host_id;
1203 focc->orig_msg = GNUNET_copy_message (message);
1204 focc->operation_id = operation_id;
1205 GNUNET_CONTAINER_DLL_insert_tail (rhc->focc_dll_head,
1206 rhc->focc_dll_tail, focc);
1207 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1212 fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
1213 GNUNET_SERVER_client_keep (client);
1214 fopc->client = client;
1215 fopc->operation_id = operation_id;
1216 fopc->type = OP_OVERLAY_CONNECT;
1218 GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.
1219 slave->controller, operation_id,
1221 &GST_forwarded_operation_reply_relay,
1223 fopc->timeout_task =
1224 GNUNET_SCHEDULER_add_delayed (GST_timeout, &GST_forwarded_operation_timeout,
1226 GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fopc);
1227 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1231 peer2_controller = NULL;
1232 if ((p2 >= GST_peer_list_size) || (NULL == GST_peer_list[p2]))
1234 if ((peer2_host_id >= GST_slave_list_size) ||
1235 (NULL == GST_slave_list[peer2_host_id]))
1237 LOG (GNUNET_ERROR_TYPE_WARNING,
1238 "0x%llx: Configuration of peer2's controller missing for connecting peers"
1239 "%u and %u\n", operation_id, p1, p2);
1240 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1243 peer2_controller = GST_slave_list[peer2_host_id]->controller;
1244 if (NULL == peer2_controller)
1246 GNUNET_break (0); /* What's going on? */
1247 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1253 if (GNUNET_YES == GST_peer_list[p2]->is_remote)
1254 peer2_controller = GST_peer_list[p2]->details.remote.slave->controller;
1256 occ = GNUNET_malloc (sizeof (struct OverlayConnectContext));
1257 GNUNET_CONTAINER_DLL_insert_tail (occq_head, occq_tail, occ);
1258 GNUNET_SERVER_client_keep (client);
1259 occ->client = client;
1261 occ->other_peer_id = p2;
1262 occ->peer = GST_peer_list[p1];
1263 occ->op_id = GNUNET_ntohll (msg->operation_id);
1264 occ->peer2_controller = peer2_controller;
1265 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == occ->timeout_task);
1267 GNUNET_SCHEDULER_add_delayed (GST_timeout, &timeout_overlay_connect, occ);
1268 /* Get the identity of the second peer */
1269 if (NULL != occ->peer2_controller)
1271 struct GNUNET_TESTBED_PeerGetConfigurationMessage cmsg;
1274 htons (sizeof (struct GNUNET_TESTBED_PeerGetConfigurationMessage));
1276 htons (GNUNET_MESSAGE_TYPE_TESTBED_GET_PEER_CONFIGURATION);
1277 cmsg.peer_id = msg->peer2;
1278 cmsg.operation_id = msg->operation_id;
1280 GNUNET_TESTBED_forward_operation_msg_ (occ->peer2_controller,
1281 occ->op_id, &cmsg.header,
1282 &overlay_connect_get_config,
1284 GNUNET_asprintf (&occ->emsg,
1285 "0x%llx: Timeout while getting peer identity of peer "
1286 "with id: %u", occ->op_id, occ->other_peer_id);
1287 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1290 GNUNET_TESTING_peer_get_identity (GST_peer_list[occ->other_peer_id]->
1292 &occ->other_peer_identity);
1293 GNUNET_asprintf (&occ->emsg,
1294 "0x%llx: Timeout while connecting to CORE of peer with "
1295 "id: %u", occ->op_id, occ->peer_id);
1296 occ->peer->reference_cnt++;
1298 GST_cache_get_handle_core (occ->peer_id, occ->peer->details.local.cfg,
1299 occ_cache_get_handle_core_cb, occ,
1300 &occ->other_peer_identity,
1301 &overlay_connect_notify, occ);
1302 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1307 * Function to cleanup RemoteOverlayConnectCtx and any associated tasks
1310 * @param rocc the RemoteOverlayConnectCtx
1313 cleanup_rocc (struct RemoteOverlayConnectCtx *rocc)
1315 LOG_DEBUG ("0x%llx: Cleaning up rocc\n", rocc->op_id);
1316 if (GNUNET_SCHEDULER_NO_TASK != rocc->attempt_connect_task_id)
1317 GNUNET_SCHEDULER_cancel (rocc->attempt_connect_task_id);
1318 if (GNUNET_SCHEDULER_NO_TASK != rocc->timeout_rocc_task_id)
1319 GNUNET_SCHEDULER_cancel (rocc->timeout_rocc_task_id);
1320 if (NULL != rocc->ohh)
1321 GNUNET_TRANSPORT_offer_hello_cancel (rocc->ohh);
1322 if (NULL != rocc->tcc.tch)
1323 GNUNET_TRANSPORT_try_connect_cancel (rocc->tcc.tch);
1324 if (GNUNET_SCHEDULER_NO_TASK != rocc->tcc.task)
1325 GNUNET_SCHEDULER_cancel (rocc->tcc.task);
1326 //GNUNET_TRANSPORT_disconnect (rocc->tcc.th_);
1327 GST_cache_get_handle_done (rocc->tcc.cgh_th);
1328 rocc->peer->reference_cnt--;
1329 if ((GNUNET_YES == rocc->peer->destroy_flag) &&
1330 (0 == rocc->peer->reference_cnt))
1331 GST_destroy_peer (rocc->peer);
1332 GNUNET_free_non_null (rocc->hello);
1333 GNUNET_CONTAINER_DLL_remove (roccq_head, roccq_tail, rocc);
1339 * Task to timeout rocc and cleanit up
1341 * @param cls the RemoteOverlayConnectCtx
1342 * @param tc the TaskContext from scheduler
1345 timeout_rocc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1347 struct RemoteOverlayConnectCtx *rocc = cls;
1349 GNUNET_assert (rocc->timeout_rocc_task_id != GNUNET_SCHEDULER_NO_TASK);
1350 rocc->timeout_rocc_task_id = GNUNET_SCHEDULER_NO_TASK;
1351 LOG_DEBUG ("0x%llx: rocc timed out\n", rocc->op_id);
1352 cleanup_rocc (rocc);
1357 * Function called to notify transport users that another
1358 * peer connected to us.
1360 * @param cls closure
1361 * @param new_peer the peer that connected
1362 * @param ats performance data
1363 * @param ats_count number of entries in ats (excluding 0-termination)
1366 cache_transport_peer_connect_notify (void *cls,
1367 const struct GNUNET_PeerIdentity *new_peer)
1369 struct RemoteOverlayConnectCtx *rocc = cls;
1371 LOG_DEBUG ("0x%llx: Request Overlay connect notify\n", rocc->op_id);
1373 memcmp (new_peer, &rocc->a_id,
1374 sizeof (struct GNUNET_PeerIdentity)));
1375 LOG_DEBUG ("0x%llx: Peer %4s connected\n", rocc->op_id,
1376 GNUNET_i2s (&rocc->a_id));
1377 cleanup_rocc (rocc);
1382 * Task to offer the HELLO message to the peer and ask it to connect to the peer
1383 * whose identity is in RemoteOverlayConnectCtx
1385 * @param cls the RemoteOverlayConnectCtx
1386 * @param tc the TaskContext from scheduler
1389 attempt_connect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1393 * Task that is run when hello has been sent
1395 * @param cls the overlay connect context
1396 * @param tc the scheduler task context; if tc->reason =
1397 * GNUNET_SCHEDULER_REASON_TIMEOUT then sending HELLO failed; if
1398 * GNUNET_SCHEDULER_REASON_READ_READY is succeeded
1401 rocc_hello_sent_cb (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1403 struct RemoteOverlayConnectCtx *rocc = cls;
1406 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == rocc->attempt_connect_task_id);
1407 LOG_DEBUG ("0x%llx: HELLO of peer %4s sent to local peer with id: %u\n",
1408 rocc->op_id, GNUNET_i2s (&rocc->a_id), rocc->peer->id);
1409 if (GNUNET_SCHEDULER_REASON_TIMEOUT == tc->reason)
1412 rocc->attempt_connect_task_id =
1413 GNUNET_SCHEDULER_add_now (&attempt_connect_task, rocc);
1416 if (GNUNET_SCHEDULER_REASON_READ_READY != tc->reason)
1418 rocc->tcc.task = GNUNET_SCHEDULER_add_now (&try_connect_task, &rocc->tcc);
1423 * Task to offer the HELLO message to the peer and ask it to connect to the peer
1424 * whose identity is in RemoteOverlayConnectCtx
1426 * @param cls the RemoteOverlayConnectCtx
1427 * @param tc the TaskContext from scheduler
1430 attempt_connect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1432 struct RemoteOverlayConnectCtx *rocc = cls;
1434 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != rocc->attempt_connect_task_id);
1435 rocc->attempt_connect_task_id = GNUNET_SCHEDULER_NO_TASK;
1436 LOG_DEBUG ("0x%llx: Offering HELLO of peer %4s to local peer with id: %u\n",
1437 rocc->op_id, GNUNET_i2s (&rocc->a_id), rocc->peer->id);
1439 GNUNET_TRANSPORT_offer_hello (rocc->tcc.th_, rocc->hello,
1440 rocc_hello_sent_cb, rocc);
1441 if (NULL == rocc->ohh)
1442 rocc->attempt_connect_task_id =
1443 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
1444 (GNUNET_TIME_UNIT_MILLISECONDS,
1446 GNUNET_CRYPTO_random_u32
1447 (GNUNET_CRYPTO_QUALITY_WEAK, 500)),
1448 &attempt_connect_task, rocc);
1453 * Callback from cache with needed handles set
1455 * @param cls the closure passed to GST_cache_get_handle_transport()
1456 * @param ch the handle to CORE. Can be NULL if it is not requested
1457 * @param th the handle to TRANSPORT. Can be NULL if it is not requested
1458 * @param ignore_ peer identity which is ignored in this callback
1461 rocc_cache_get_handle_transport_cb (void *cls, struct GNUNET_CORE_Handle *ch,
1462 struct GNUNET_TRANSPORT_Handle *th,
1463 const struct GNUNET_PeerIdentity *ignore_)
1465 struct RemoteOverlayConnectCtx *rocc = cls;
1469 rocc->timeout_rocc_task_id =
1470 GNUNET_SCHEDULER_add_now (&timeout_rocc_task, rocc);
1474 rocc->tcc.pid = &rocc->a_id;
1476 GNUNET_TRANSPORT_check_neighbour_connected (rocc->tcc.th_, rocc->tcc.pid))
1478 LOG_DEBUG ("0x%llx: Target peer %4s already connected to local peer: %u\n",
1479 rocc->op_id, GNUNET_i2s (&rocc->a_id), rocc->peer->id);
1480 cleanup_rocc (rocc);
1483 rocc->attempt_connect_task_id =
1484 GNUNET_SCHEDULER_add_now (&attempt_connect_task, rocc);
1489 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_REQUESTCONNECT messages
1492 * @param client identification of the client
1493 * @param message the actual message
1496 GST_handle_remote_overlay_connect (void *cls,
1497 struct GNUNET_SERVER_Client *client,
1498 const struct GNUNET_MessageHeader *message)
1500 const struct GNUNET_TESTBED_RemoteOverlayConnectMessage *msg;
1501 struct RemoteOverlayConnectCtx *rocc;
1507 msize = ntohs (message->size);
1508 if (sizeof (struct GNUNET_TESTBED_RemoteOverlayConnectMessage) >= msize)
1511 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1514 msg = (const struct GNUNET_TESTBED_RemoteOverlayConnectMessage *) message;
1515 if ((NULL == msg->hello) ||
1516 (GNUNET_MESSAGE_TYPE_HELLO != ntohs (msg->hello->type)))
1519 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1522 hsize = ntohs (msg->hello->size);
1523 if ((sizeof (struct GNUNET_TESTBED_RemoteOverlayConnectMessage) + hsize) !=
1527 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1530 peer_id = ntohl (msg->peer);
1531 if ((peer_id >= GST_peer_list_size) ||
1532 (NULL == (peer = GST_peer_list[peer_id])))
1534 GNUNET_break_op (0);
1535 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1538 if (GNUNET_YES == peer->is_remote)
1540 struct GNUNET_MessageHeader *msg2;
1542 msg2 = GNUNET_copy_message (message);
1543 GNUNET_TESTBED_queue_message_ (peer->details.remote.slave->controller,
1545 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1548 rocc = GNUNET_malloc (sizeof (struct RemoteOverlayConnectCtx));
1549 rocc->op_id = GNUNET_ntohll (msg->operation_id);
1550 GNUNET_CONTAINER_DLL_insert_tail (roccq_head, roccq_tail, rocc);
1551 memcpy (&rocc->a_id, &msg->peer_identity,
1552 sizeof (struct GNUNET_PeerIdentity));
1553 LOG_DEBUG ("Received request for overlay connection with op_id: 0x%llx "
1554 "from local peer %u to peer %4s with hello size: %u\n",
1555 rocc->op_id, peer_id, GNUNET_i2s (&rocc->a_id), hsize);
1557 rocc->peer->reference_cnt++;
1558 rocc->hello = GNUNET_malloc (hsize);
1559 memcpy (rocc->hello, msg->hello, hsize);
1561 GST_cache_get_handle_transport (peer_id, rocc->peer->details.local.cfg,
1562 &rocc_cache_get_handle_transport_cb, rocc,
1564 &cache_transport_peer_connect_notify,
1566 rocc->timeout_rocc_task_id =
1567 GNUNET_SCHEDULER_add_delayed (GST_timeout, &timeout_rocc_task, rocc);
1568 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1573 * Clears all pending overlay connect contexts in queue
1578 struct OverlayConnectContext *occ;
1580 while (NULL != (occ = occq_head))
1586 * Clears all pending remote overlay connect contexts in queue
1591 struct RemoteOverlayConnectCtx *rocc;
1593 while (NULL != (rocc = roccq_head))
1594 cleanup_rocc (rocc);