* @brief core service; this is the main API for encrypted P2P
* communications
* @author Christian Grothoff
- *
- * TODO:
- * - implement atsi parsing and passing
*/
#include "platform.h"
#include "gnunet_constants.h"
struct ControlMessage *prev;
/**
- * Function to run after successful transmission (or call with
- * reason 'TIMEOUT' on error).
+ * Function to run after transmission failed/succeeded.
*/
- GNUNET_SCHEDULER_Task cont;
-
+ GNUNET_CORE_ControlContinuation cont;
+
/**
* Closure for 'cont'.
*/
void *cont_cls;
+ /**
+ * Transmit handle (if one is associated with this ControlMessage), or NULL.
+ */
+ struct GNUNET_CORE_TransmitHandle *th;
};
/**
* Head of doubly-linked list of pending requests.
*/
- struct ControlMessage *pending_head;
+ struct ControlMessage *control_pending_head;
/**
* Tail of doubly-linked list of pending requests.
*/
- struct ControlMessage *pending_tail;
+ struct ControlMessage *control_pending_tail;
/**
* Head of doubly-linked list of peers that are core-approved
*/
struct GNUNET_CONTAINER_MultiHashMap *peers;
+ /**
+ * Identity of this peer.
+ */
+ struct GNUNET_PeerIdentity me;
+
/**
* ID of reconnect task (if any).
*/
GNUNET_SCHEDULER_TaskIdentifier reconnect_task;
+ /**
+ * Current delay we use for re-trying to connect to core.
+ */
+ struct GNUNET_TIME_Relative retry_backoff;
+
/**
* Request information ID generator.
*/
struct GNUNET_CORE_Handle *h = cls;
h->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connecting to CORE service after delay\n");
+#endif
reconnect (h);
}
+/**
+ * Notify clients about disconnect and free
+ * the entry for connected peer.
+ *
+ * @param cls the 'struct GNUNET_CORE_Handle*'
+ * @param key the peer identity (not used)
+ * @param value the 'struct PeerRecord' to free.
+ * @return GNUNET_YES (continue)
+ */
+static int
+disconnect_and_free_peer_entry (void *cls,
+ const GNUNET_HashCode *key,
+ void *value)
+{
+ static struct GNUNET_BANDWIDTH_Value32NBO zero;
+ struct GNUNET_CORE_Handle *h = cls;
+ struct GNUNET_CORE_TransmitHandle *th;
+ struct PeerRecord *pr = value;
+ GNUNET_CORE_PeerConfigurationInfoCallback pcic;
+
+ while (NULL != (th = pr->pending_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (pr->pending_head,
+ pr->pending_tail,
+ th);
+ pr->queue_size--;
+ GNUNET_assert (0 ==
+ th->get_message (th->get_message_cls,
+ 0, NULL));
+ GNUNET_free (th);
+ }
+ if (NULL != (pcic = pr->pcic))
+ {
+ pr->pcic = NULL;
+ pcic (pr->pcic_cls,
+ &pr->peer,
+ zero,
+ 0, 0);
+ }
+ if (pr->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (pr->timeout_task);
+ pr->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_assert (pr->queue_size == 0);
+ if ( (pr->prev != NULL) ||
+ (pr->next != NULL) ||
+ (h->ready_peer_head == pr) )
+ GNUNET_CONTAINER_DLL_remove (h->ready_peer_head,
+ h->ready_peer_tail,
+ pr);
+ if (h->disconnects != NULL)
+ h->disconnects (h->cls,
+ &pr->peer);
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_remove (h->peers,
+ key,
+ pr));
+ GNUNET_assert (pr->pending_head == NULL);
+ GNUNET_assert (pr->pending_tail == NULL);
+ GNUNET_assert (pr->ch = h);
+ GNUNET_assert (pr->queue_size == 0);
+ GNUNET_assert (pr->timeout_task == GNUNET_SCHEDULER_NO_TASK);
+ GNUNET_free (pr);
+ return GNUNET_YES;
+}
+
+
+/**
+ * Close down any existing connection to the CORE service and
+ * try re-establishing it later.
+ *
+ * @param h our handle
+ */
+static void
+reconnect_later (struct GNUNET_CORE_Handle *h)
+{
+ struct ControlMessage *cm;
+ struct PeerRecord *pr;
+
+ GNUNET_assert (h->reconnect_task == GNUNET_SCHEDULER_NO_TASK);
+ if (h->client != NULL)
+ {
+ GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
+ h->client = NULL;
+ h->cth = NULL;
+ GNUNET_CONTAINER_multihashmap_iterate (h->peers,
+ &disconnect_and_free_peer_entry,
+ h);
+ }
+ while (NULL != (pr = h->ready_peer_head))
+ GNUNET_CONTAINER_DLL_remove (h->ready_peer_head,
+ h->ready_peer_tail,
+ pr);
+ h->currently_down = GNUNET_YES;
+ h->reconnect_task = GNUNET_SCHEDULER_add_delayed (h->retry_backoff,
+ &reconnect_task,
+ h);
+ while (NULL != (cm = h->control_pending_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (h->control_pending_head,
+ h->control_pending_tail,
+ cm);
+ if (cm->th != NULL)
+ cm->th->cm = NULL;
+ if (cm->cont != NULL)
+ cm->cont (cm->cont_cls, GNUNET_NO);
+ GNUNET_free (cm);
+ }
+ GNUNET_assert (h->control_pending_head == NULL);
+ h->retry_backoff = GNUNET_TIME_relative_min (GNUNET_TIME_UNIT_SECONDS,
+ h->retry_backoff);
+ h->retry_backoff = GNUNET_TIME_relative_multiply (h->retry_backoff, 2);
+}
+
+
/**
* Check the list of pending requests, send the next
* one to the core.
*
* @param h core handle
+ * @param ignore_currently_down transmit message even if not initialized?
*/
static void
-trigger_next_request (struct GNUNET_CORE_Handle *h);
+trigger_next_request (struct GNUNET_CORE_Handle *h,
+ int ignore_currently_down);
/**
const struct GNUNET_SCHEDULER_TaskContext *tc);
-/**
- * Control message was sent, mark it as such.
- *
- * @param cls the 'struct GNUNET_CORE_TransmitHandle*'
- * @param tc scheduler context
- */
-static void
-mark_control_message_sent (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct GNUNET_CORE_TransmitHandle *th = cls;
-
- th->cm = NULL;
-}
-
-
/**
* Send a control message to the peer asking for transmission
* of the message in the given peer record.
}
if (NULL == (th = pr->pending_head))
{
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
return;
}
+ if (th->cm != NULL)
+ return; /* already done */
GNUNET_assert (pr->prev == NULL);
GNUNET_assert (pr->next == NULL);
pr->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_absolute_get_remaining (th->timeout),
pr);
cm = GNUNET_malloc (sizeof (struct ControlMessage) +
sizeof (struct SendMessageRequest));
- cm->cont = &mark_control_message_sent;
- cm->cont_cls = th;
th->cm = cm;
+ cm->th = th;
smr = (struct SendMessageRequest*) &cm[1];
smr->header.type = htons (GNUNET_MESSAGE_TYPE_CORE_SEND_REQUEST);
smr->header.size = htons (sizeof (struct SendMessageRequest));
smr->queue_size = htonl (pr->queue_size);
smr->size = htons (th->msize);
smr->smr_id = htons (th->smr_id = pr->smr_id_gen++);
- GNUNET_CONTAINER_DLL_insert_after (h->pending_head,
- h->pending_tail,
- h->pending_tail,
+ GNUNET_CONTAINER_DLL_insert_after (h->control_pending_head,
+ h->control_pending_tail,
+ h->control_pending_tail,
cm);
- trigger_next_request (h);
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding SEND REQUEST for peer `%s' to message queue\n",
+ GNUNET_i2s (&pr->peer));
+#endif
+ trigger_next_request (h, GNUNET_NO);
}
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct PeerRecord *pr = cls;
+ struct GNUNET_CORE_Handle *h = pr->ch;
struct GNUNET_CORE_TransmitHandle *th;
-
+
pr->timeout_task = GNUNET_SCHEDULER_NO_TASK;
th = pr->pending_head;
GNUNET_CONTAINER_DLL_remove (pr->pending_head,
pr->pending_tail,
th);
pr->queue_size--;
+ if ( (pr->prev != NULL) ||
+ (pr->next != NULL) ||
+ (pr == h->ready_peer_head) )
+ {
+ /* the request that was 'approved' by core was
+ canceled before it could be transmitted; remove
+ us from the 'ready' list */
+ GNUNET_CONTAINER_DLL_remove (h->ready_peer_head,
+ h->ready_peer_tail,
+ pr);
+ }
#if DEBUG_CORE
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Signalling timeout of request for transmission to CORE service\n");
uint16_t msize;
size_t ret;
+ GNUNET_assert (h->reconnect_task == GNUNET_SCHEDULER_NO_TASK);
h->cth = NULL;
if (buf == NULL)
{
- reconnect (h);
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmission failed, initiating reconnect\n");
+#endif
+ reconnect_later (h);
return 0;
}
/* first check for control messages */
- if (NULL != (cm = h->pending_head))
+ if (NULL != (cm = h->control_pending_head))
{
hdr = (const struct GNUNET_MessageHeader*) &cm[1];
msize = ntohs (hdr->size);
if (size < msize)
{
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
return 0;
}
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitting control message with %u bytes of type %u to core.\n",
+ (unsigned int) msize,
+ (unsigned int) ntohs (hdr->type));
+#endif
memcpy (buf, hdr, msize);
- GNUNET_CONTAINER_DLL_remove (h->pending_head,
- h->pending_tail,
- cm);
+ GNUNET_CONTAINER_DLL_remove (h->control_pending_head,
+ h->control_pending_tail,
+ cm);
+ if (cm->th != NULL)
+ cm->th->cm = NULL;
if (NULL != cm->cont)
- GNUNET_SCHEDULER_add_now (cm->cont, cm->cont_cls);
+ cm->cont (cm->cont_cls, GNUNET_OK);
GNUNET_free (cm);
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
return msize;
}
/* now check for 'ready' P2P messages */
if (NULL != (pr = h->ready_peer_head))
{
+ GNUNET_assert (pr->pending_head != NULL);
th = pr->pending_head;
if (size < th->msize + sizeof (struct SendMessage))
{
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
return 0;
}
GNUNET_CONTAINER_DLL_remove (h->ready_peer_head,
GNUNET_SCHEDULER_cancel (pr->timeout_task);
pr->timeout_task = GNUNET_SCHEDULER_NO_TASK;
}
-
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmitting SEND request to `%s' with %u bytes.\n",
+ GNUNET_i2s (&pr->peer),
+ (unsigned int) th->msize);
+#endif
sm = (struct SendMessage *) buf;
sm->header.type = htons (GNUNET_MESSAGE_TYPE_CORE_SEND);
sm->priority = htonl (th->priority);
* one to the core.
*
* @param h core handle
+ * @param ignore_currently_down transmit message even if not initialized?
*/
static void
-trigger_next_request (struct GNUNET_CORE_Handle *h)
+trigger_next_request (struct GNUNET_CORE_Handle *h,
+ int ignore_currently_down)
{
uint16_t msize;
- if (GNUNET_YES == h->currently_down)
- return;
+ if ( (GNUNET_YES == h->currently_down) &&
+ (ignore_currently_down == GNUNET_NO) )
+ {
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Core connection down, not processing queue\n");
+#endif
+ return;
+ }
if (NULL != h->cth)
- return;
- if (h->pending_head != NULL)
- msize = ntohs (((struct GNUNET_MessageHeader*) &h->pending_head[1])->size);
- else if (h->ready_peer_head != NULL)
+ {
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Request pending, not processing queue\n");
+#endif
+ return;
+ }
+ if (h->control_pending_head != NULL)
+ msize = ntohs (((struct GNUNET_MessageHeader*) &h->control_pending_head[1])->size);
+ else if (h->ready_peer_head != NULL)
msize = h->ready_peer_head->pending_head->msize + sizeof (struct SendMessage);
else
- return; /* no pending message */
+ {
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Request queue empty, not processing queue\n");
+#endif
+ return; /* no pending message */
+ }
h->cth = GNUNET_CLIENT_notify_transmit_ready (h->client,
msize,
GNUNET_TIME_UNIT_FOREVER_REL,
}
-
-
-/**
- * Notify clients about disconnect and free
- * the entry for connected peer.
- *
- * @param cls the 'struct GNUNET_CORE_Handle*'
- * @param key the peer identity (not used)
- * @param value the 'struct PeerRecord' to free.
- * @return GNUNET_YES (continue)
- */
-static int
-disconnect_and_free_peer_entry (void *cls,
- const GNUNET_HashCode *key,
- void *value)
-{
- struct GNUNET_CORE_Handle *h = cls;
- struct GNUNET_CORE_TransmitHandle *th;
- struct PeerRecord *pr = value;
-
- while (NULL != (th = pr->pending_head))
- {
- GNUNET_CONTAINER_DLL_remove (pr->pending_head,
- pr->pending_tail,
- th);
- pr->queue_size--;
- GNUNET_assert (0 ==
- th->get_message (th->get_message_cls,
- 0, NULL));
- GNUNET_free (th);
- }
- if (pr->pcic != NULL)
- {
- // FIXME: call pcic callback!
- }
- if (pr->timeout_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (pr->timeout_task);
- pr->timeout_task = GNUNET_SCHEDULER_NO_TASK;
- }
- GNUNET_assert (pr->queue_size == 0);
- if ( (pr->prev != NULL) ||
- (pr->next != NULL) ||
- (h->ready_peer_head == pr) )
- GNUNET_CONTAINER_DLL_remove (h->ready_peer_head,
- h->ready_peer_tail,
- pr);
- if (h->disconnects != NULL)
- h->disconnects (h->cls,
- &pr->peer);
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (h->peers,
- key,
- pr));
- GNUNET_assert (pr->pending_head == NULL);
- GNUNET_assert (pr->pending_tail == NULL);
- GNUNET_assert (pr->ch = h);
- GNUNET_assert (pr->queue_size == 0);
- GNUNET_assert (pr->timeout_task == GNUNET_SCHEDULER_NO_TASK);
- GNUNET_free (pr);
- return GNUNET_YES;
-}
-
-
/**
* Handler for notification messages received from the core.
*
const struct GNUNET_CORE_MessageHandler *mh;
GNUNET_CORE_StartupCallback init;
GNUNET_CORE_PeerConfigurationInfoCallback pcic;
- struct GNUNET_PeerIdentity my_identity;
struct PeerRecord *pr;
struct GNUNET_CORE_TransmitHandle *th;
unsigned int hpos;
int trigger;
uint16_t msize;
uint16_t et;
+ uint32_t ats_count;
if (msg == NULL)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
_
("Client was disconnected from core service, trying to reconnect.\n"));
- reconnect (h);
+ reconnect_later (h);
return;
}
msize = ntohs (msg->size);
if (ntohs (msg->size) != sizeof (struct InitReplyMessage))
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
m = (const struct InitReplyMessage *) msg;
GNUNET_break (0 == ntohl (m->reserved));
/* start our message processing loop */
-#if DEBUG_CORE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Successfully connected to core service, starting processing loop.\n");
-#endif
if (GNUNET_YES == h->currently_down)
{
h->currently_down = GNUNET_NO;
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
}
+ h->retry_backoff = GNUNET_TIME_UNIT_MILLISECONDS;
+ GNUNET_CRYPTO_hash (&m->publicKey,
+ sizeof (struct
+ GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
+ &h->me.hashPubKey);
if (NULL != (init = h->init))
{
/* mark so we don't call init on reconnect */
h->init = NULL;
- GNUNET_CRYPTO_hash (&m->publicKey,
- sizeof (struct
- GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded),
- &my_identity.hashPubKey);
- init (h->cls, h, &my_identity, &m->publicKey);
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connected to core service of peer `%s'.\n",
+ GNUNET_i2s (&h->me));
+#endif
+ init (h->cls, h, &h->me, &m->publicKey);
}
+ else
+ {
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Successfully reconnected to core service.\n");
+#endif
+ }
+ /* fake 'connect to self' */
+ pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
+ &h->me.hashPubKey);
+ GNUNET_assert (pr == NULL);
+ pr = GNUNET_malloc (sizeof (struct PeerRecord));
+ pr->peer = h->me;
+ pr->ch = h;
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multihashmap_put (h->peers,
+ &h->me.hashPubKey,
+ pr,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST));
+ if (NULL != h->connects)
+ h->connects (h->cls,
+ &h->me,
+ NULL);
break;
case GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT:
- if (msize != sizeof (struct ConnectNotifyMessage))
+ if (msize < sizeof (struct ConnectNotifyMessage))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
cnm = (const struct ConnectNotifyMessage *) msg;
+ ats_count = ntohl (cnm->ats_count);
+ if ( (msize != sizeof (struct ConnectNotifyMessage) + ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)) ||
+ (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR != ntohl ((&cnm->ats)[ats_count].type)) )
+ {
+ GNUNET_break (0);
+ reconnect_later (h);
+ return;
+ }
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received notification about connection from `%s'.\n",
+ GNUNET_i2s (&cnm->peer));
+#endif
+ if (0 == memcmp (&h->me,
+ &cnm->peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* connect to self!? */
+ GNUNET_break (0);
+ return;
+ }
pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
&cnm->peer.hashPubKey);
if (pr != NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
pr = GNUNET_malloc (sizeof (struct PeerRecord));
if (NULL != h->connects)
h->connects (h->cls,
&cnm->peer,
- NULL /* FIXME: atsi! */);
+ &cnm->ats);
break;
case GNUNET_MESSAGE_TYPE_CORE_NOTIFY_DISCONNECT:
if (msize != sizeof (struct DisconnectNotifyMessage))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
dnm = (const struct DisconnectNotifyMessage *) msg;
+ if (0 == memcmp (&h->me,
+ &dnm->peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* connection to self!? */
+ GNUNET_break (0);
+ return;
+ }
+ GNUNET_break (0 == ntohl (dnm->reserved));
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received notification about disconnect from `%s'.\n",
+ GNUNET_i2s (&dnm->peer));
+#endif
pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
&dnm->peer.hashPubKey);
if (pr == NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
trigger = ( (pr->prev != NULL) ||
(h->ready_peer_head == pr) );
disconnect_and_free_peer_entry (h, &dnm->peer.hashPubKey, pr);
if (trigger)
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
break;
case GNUNET_MESSAGE_TYPE_CORE_NOTIFY_STATUS_CHANGE:
if (NULL == h->status_events)
{
GNUNET_break (0);
- break;
}
- if (msize != sizeof (struct PeerStatusNotifyMessage))
+ if (msize < sizeof (struct PeerStatusNotifyMessage))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
psnm = (const struct PeerStatusNotifyMessage *) msg;
+ if (0 == memcmp (&h->me,
+ &psnm->peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* self-change!? */
+ GNUNET_break (0);
+ return;
+ }
+ ats_count = ntohl (psnm->ats_count);
+ if ( (msize != sizeof (struct PeerStatusNotifyMessage) + ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)) ||
+ (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR != ntohl ((&psnm->ats)[ats_count].type)) )
+ {
+ GNUNET_break (0);
+ reconnect_later (h);
+ return;
+ }
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received notification about status change by `%s'.\n",
+ GNUNET_i2s (&psnm->peer));
+#endif
pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
&psnm->peer.hashPubKey);
if (pr == NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
h->status_events (h->cls,
psnm->bandwidth_in,
psnm->bandwidth_out,
GNUNET_TIME_absolute_ntoh (psnm->timeout),
- NULL /* FIXME: atsi */);
+ &psnm->ats);
break;
case GNUNET_MESSAGE_TYPE_CORE_NOTIFY_INBOUND:
- if (msize <
- sizeof (struct NotifyTrafficMessage) +
- sizeof (struct GNUNET_MessageHeader))
+ if (msize < sizeof (struct NotifyTrafficMessage))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
ntm = (const struct NotifyTrafficMessage *) msg;
- em = (const struct GNUNET_MessageHeader *) &ntm[1];
+
+ ats_count = ntohl (ntm->ats_count);
+ if ( (msize < sizeof (struct NotifyTrafficMessage) + ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)
+ + sizeof (struct GNUNET_MessageHeader)) ||
+ (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR != ntohl ((&ntm->ats)[ats_count].type)) )
+ {
+ GNUNET_break (0);
+ reconnect_later (h);
+ return;
+ }
+ em = (const struct GNUNET_MessageHeader *) &(&ntm->ats)[ats_count+1];
#if DEBUG_CORE
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Received message of type %u and size %u from peer `%4s'\n",
if (pr == NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
if ((GNUNET_NO == h->inbound_hdr_only) &&
- (msize != ntohs (em->size) + sizeof (struct NotifyTrafficMessage)))
+ (msize != ntohs (em->size) + sizeof (struct NotifyTrafficMessage) +
+ + ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)) )
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
et = ntohs (em->type);
for (hpos = 0; hpos < h->hcnt; hpos++)
}
if (GNUNET_OK !=
h->handlers[hpos].callback (h->cls, &ntm->peer, em,
- NULL /* FIXME: atsi */))
+ &ntm->ats))
{
/* error in processing, do not process other messages! */
break;
}
if (NULL != h->inbound_notify)
h->inbound_notify (h->cls, &ntm->peer, em,
- NULL /* FIXME: atsi */);
+ &ntm->ats);
break;
case GNUNET_MESSAGE_TYPE_CORE_NOTIFY_OUTBOUND:
- if (msize <
- sizeof (struct NotifyTrafficMessage) +
- sizeof (struct GNUNET_MessageHeader))
+ if (msize < sizeof (struct NotifyTrafficMessage))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
ntm = (const struct NotifyTrafficMessage *) msg;
- em = (const struct GNUNET_MessageHeader *) &ntm[1];
+ if (0 == memcmp (&h->me,
+ &ntm->peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* self-change!? */
+ GNUNET_break (0);
+ return;
+ }
+ ats_count = ntohl (ntm->ats_count);
+ if ( (msize < sizeof (struct NotifyTrafficMessage) + ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)
+ + sizeof (struct GNUNET_MessageHeader)) ||
+ (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR != ntohl ((&ntm->ats)[ats_count].type)) )
+ {
+ GNUNET_break (0);
+ reconnect_later (h);
+ return;
+ }
+ em = (const struct GNUNET_MessageHeader *) &(&ntm->ats)[ats_count+1];
pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
&ntm->peer.hashPubKey);
if (pr == NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received notification about transmission to `%s'.\n",
+ GNUNET_i2s (&ntm->peer));
+#endif
if ((GNUNET_NO == h->outbound_hdr_only) &&
- (msize != ntohs (em->size) + sizeof (struct NotifyTrafficMessage)))
+ (msize != ntohs (em->size) + sizeof (struct NotifyTrafficMessage)
+ + ats_count * sizeof (struct GNUNET_TRANSPORT_ATS_Information)) )
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
if (NULL == h->outbound_notify)
{
break;
}
h->outbound_notify (h->cls, &ntm->peer, em,
- NULL /* FIXME: atsi? */);
+ &ntm->ats);
break;
case GNUNET_MESSAGE_TYPE_CORE_SEND_READY:
if (msize != sizeof (struct SendMessageReady))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
smr = (const struct SendMessageReady *) msg;
pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
if (pr == NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received notification about transmission readiness to `%s'.\n",
+ GNUNET_i2s (&smr->peer));
+#endif
+ if (pr->pending_head == NULL)
+ {
+ /* request must have been cancelled between the original request
+ and the response from core, ignore core's readiness */
+ return;
+ }
+
th = pr->pending_head;
if (ntohs (smr->smr_id) != th->smr_id)
{
{
/* we should not already be on the ready list... */
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
GNUNET_CONTAINER_DLL_insert (h->ready_peer_head,
h->ready_peer_tail,
pr);
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_NO);
break;
case GNUNET_MESSAGE_TYPE_CORE_CONFIGURATION_INFO:
if (ntohs (msg->size) != sizeof (struct ConfigurationInfoMessage))
{
GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
cim = (const struct ConfigurationInfoMessage*) msg;
+ if (0 == memcmp (&h->me,
+ &cim->peer,
+ sizeof (struct GNUNET_PeerIdentity)))
+ {
+ /* self-change!? */
+ GNUNET_break (0);
+ return;
+ }
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Received notification about configuration update for `%s'.\n",
+ GNUNET_i2s (&cim->peer));
+#endif
pr = GNUNET_CONTAINER_multihashmap_get (h->peers,
&cim->peer.hashPubKey);
if (pr == NULL)
{
GNUNET_break (0);
- reconnect (h);
+ reconnect_later (h);
return;
}
if (pr->rim_id != ntohl (cim->rim_id))
- break;
+ {
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Reservation ID mismatch in notification...\n");
+#endif
+ break;
+ }
pcic = pr->pcic;
pr->pcic = NULL;
if (pcic != NULL)
GNUNET_ntohll (cim->preference));
break;
default:
- GNUNET_break (0);
- break;
+ reconnect_later (h);
+ return;
}
GNUNET_CLIENT_receive (h->client,
- &main_notify_handler, h, GNUNET_TIME_UNIT_FOREVER_REL);
+ &main_notify_handler, h,
+ GNUNET_TIME_UNIT_FOREVER_REL);
}
* Starts our 'receive' loop.
*
* @param cls the 'struct GNUNET_CORE_Handle'
- * @param tc task context
+ * @param success were we successful
*/
static void
init_done_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+ int success)
{
struct GNUNET_CORE_Handle *h = cls;
- if (0 == (tc->reason & GNUNET_SCHEDULER_REASON_PREREQ_DONE))
+ if (success == GNUNET_SYSERR)
+ return; /* shutdown */
+ if (success == GNUNET_NO)
{
- if (h->client != NULL)
- {
- GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
- h->client = NULL;
- }
- h->reconnect_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &reconnect_task,
- h);
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Failed to exchange INIT with core, retrying\n");
+#endif
+ if (h->reconnect_task == GNUNET_SCHEDULER_NO_TASK)
+ reconnect_later (h);
return;
}
GNUNET_CLIENT_receive (h->client,
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Reconnecting to CORE service\n");
#endif
- if (h->client != NULL)
- {
- GNUNET_CLIENT_disconnect (h->client, GNUNET_NO);
- h->client = NULL;
- GNUNET_CONTAINER_multihashmap_iterate (h->peers,
- &disconnect_and_free_peer_entry,
- h);
- }
- h->currently_down = GNUNET_YES;
+ GNUNET_assert (h->client == NULL);
+ GNUNET_assert (h->currently_down == GNUNET_YES);
h->client = GNUNET_CLIENT_connect ("core", h->cfg);
if (h->client == NULL)
{
- h->reconnect_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
- &reconnect_task,
- h);
+ reconnect_later (h);
return;
}
msize = h->hcnt * sizeof (uint16_t) + sizeof (struct InitMessage);
ts = (uint16_t *) &init[1];
for (hpos = 0; hpos < h->hcnt; hpos++)
ts[hpos] = htons (h->handlers[hpos].type);
- GNUNET_CONTAINER_DLL_insert (h->pending_head,
- h->pending_tail,
+ GNUNET_CONTAINER_DLL_insert (h->control_pending_head,
+ h->control_pending_tail,
cm);
- trigger_next_request (h);
+ trigger_next_request (h, GNUNET_YES);
}
h->outbound_hdr_only = outbound_hdr_only;
h->handlers = handlers;
h->hcnt = 0;
+ h->currently_down = GNUNET_YES;
+ h->peers = GNUNET_CONTAINER_multihashmap_create (128);
+ h->retry_backoff = GNUNET_TIME_UNIT_MILLISECONDS;
while (handlers[h->hcnt].callback != NULL)
h->hcnt++;
GNUNET_assert (h->hcnt <
(GNUNET_SERVER_MAX_MESSAGE_SIZE -
sizeof (struct InitMessage)) / sizeof (uint16_t));
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connecting to CORE service\n");
+#endif
reconnect (h);
return h;
}
/**
* Disconnect from the core service. This function can only
* be called *after* all pending 'GNUNET_CORE_notify_transmit_ready'
- * requests have been explicitly cancelled.
+ * requests have been explicitly canceled.
*
* @param handle connection to core to disconnect
*/
{
struct ControlMessage *cm;
- if (handle->reconnect_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (handle->reconnect_task);
- handle->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
- }
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Disconnecting from CORE service\n");
+#endif
if (handle->cth != NULL)
{
GNUNET_CLIENT_notify_transmit_ready_cancel (handle->cth);
GNUNET_CLIENT_disconnect (handle->client, GNUNET_NO);
handle->client = NULL;
}
- while (NULL != (cm = handle->pending_head))
+ while (NULL != (cm = handle->control_pending_head))
{
- GNUNET_CONTAINER_DLL_remove (handle->pending_head,
- handle->pending_tail,
+ GNUNET_CONTAINER_DLL_remove (handle->control_pending_head,
+ handle->control_pending_tail,
cm);
+ if (cm->th != NULL)
+ cm->th->cm = NULL;
+ if (cm->cont != NULL)
+ cm->cont (cm->cont_cls, GNUNET_SYSERR);
GNUNET_free (cm);
}
+ if (handle->reconnect_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (handle->reconnect_task);
+ handle->reconnect_task = GNUNET_SCHEDULER_NO_TASK;
+ }
GNUNET_CONTAINER_multihashmap_iterate (handle->peers,
&disconnect_and_free_peer_entry,
handle);
/**
* Ask the core to call "notify" once it is ready to transmit the
- * given number of bytes to the specified "target". If we are not yet
- * connected to the specified peer, a call to this function will cause
- * us to try to establish a connection.
+ * given number of bytes to the specified "target". Must only be
+ * called after a connection to the respective peer has been
+ * established (and the client has been informed about this).
*
* @param handle connection to core service
* @param priority how important is the message?
if (NULL == pr)
{
/* attempt to send to peer that is not connected */
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
+ "Attempting to send to peer `%s' from peer `%s', but not connected!\n",
+ GNUNET_i2s(target), GNUNET_h2s(&handle->me.hashPubKey));
GNUNET_break (0);
return NULL;
}
GNUNET_SERVER_MAX_MESSAGE_SIZE);
th = GNUNET_malloc (sizeof (struct GNUNET_CORE_TransmitHandle));
th->peer = pr;
+ GNUNET_assert(NULL != notify);
th->get_message = notify;
th->get_message_cls = notify_cls;
th->timeout = GNUNET_TIME_relative_to_absolute (maxdelay);
/* bound queue size */
if (pr->queue_size == handle->queue_size)
{
- /* find lowest-priority entry */
- minp = pr->pending_head;
- prev = minp->next;
+ /* find lowest-priority entry, but skip the head of the list */
+ minp = pr->pending_head->next;
+ prev = minp;
while (prev != NULL)
{
if (prev->priority < minp->priority)
{
GNUNET_break (handle->queue_size != 0);
GNUNET_break (pr->queue_size == 0);
+ GNUNET_free(th);
return NULL;
}
if (priority <= minp->priority)
- return NULL; /* priority too low */
+ {
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Dropping transmission request: priority too low\n");
+#endif
+ return NULL; /* priority too low */
+ }
GNUNET_CONTAINER_DLL_remove (pr->pending_head,
pr->pending_tail,
minp);
th);
pr->queue_size++;
/* was the request queue previously empty? */
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Transmission request added to queue\n");
+#endif
if (pr->pending_head == th)
request_next_transmission (pr);
return th;
GNUNET_CONTAINER_DLL_remove (pr->pending_head,
pr->pending_tail,
th);
+ pr->queue_size--;
if (th->cm != NULL)
{
/* we're currently in the control queue, remove */
- GNUNET_CONTAINER_DLL_remove (h->pending_head,
- h->pending_tail,
+ GNUNET_CONTAINER_DLL_remove (h->control_pending_head,
+ h->control_pending_tail,
th->cm);
GNUNET_free (th->cm);
}
(pr == h->ready_peer_head) )
{
/* the request that was 'approved' by core was
- cancelled before it could be transmitted; remove
+ canceled before it could be transmitted; remove
us from the 'ready' list */
GNUNET_CONTAINER_DLL_remove (h->ready_peer_head,
h->ready_peer_tail,
/**
* Continuation to run when done.
*/
- GNUNET_SCHEDULER_Task cont;
+ GNUNET_CORE_ControlContinuation cont;
/**
* Closure for 'cont'.
};
-
/**
* Continuation called when the control message was transmitted.
* Calls the original continuation and frees the remaining
* resources.
*
* @param cls the 'struct GNUNET_CORE_PeerRequestHandle'
- * @param tc scheduler context
+ * @param success was the request transmitted?
*/
static void
peer_request_connect_cont (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+ int success)
{
struct GNUNET_CORE_PeerRequestHandle *ret = cls;
if (ret->cont != NULL)
- ret->cont (ret->cont_cls, tc);
+ ret->cont (ret->cont_cls, success);
GNUNET_free (ret);
}
* @param peer who should we connect to
* @param cont function to call once the request has been completed (or timed out)
* @param cont_cls closure for cont
- * @return NULL on error (cont will not be called), otherwise handle for cancellation
+ *
+ * @return NULL on error or already connected,
+ * otherwise handle for cancellation
*/
struct GNUNET_CORE_PeerRequestHandle *
GNUNET_CORE_peer_request_connect (struct GNUNET_CORE_Handle *h,
struct GNUNET_TIME_Relative timeout,
const struct GNUNET_PeerIdentity * peer,
- GNUNET_SCHEDULER_Task cont,
+ GNUNET_CORE_ControlContinuation cont,
void *cont_cls)
{
struct GNUNET_CORE_PeerRequestHandle *ret;
struct ControlMessage *cm;
struct ConnectMessage *msg;
+
+ if (NULL != GNUNET_CONTAINER_multihashmap_get (h->peers,
+ &peer->hashPubKey))
+ return NULL; /* Already connected, means callback should have happened already! */
+
cm = GNUNET_malloc (sizeof (struct ControlMessage) +
sizeof (struct ConnectMessage));
msg->reserved = htonl (0);
msg->timeout = GNUNET_TIME_relative_hton (timeout);
msg->peer = *peer;
- GNUNET_CONTAINER_DLL_insert (h->pending_head,
- h->pending_tail,
+ GNUNET_CONTAINER_DLL_insert (h->control_pending_head,
+ h->control_pending_tail,
cm);
ret = GNUNET_malloc (sizeof (struct GNUNET_CORE_PeerRequestHandle));
ret->h = h;
ret->cont_cls = cont_cls;
cm->cont = &peer_request_connect_cont;
cm->cont_cls = ret;
- if (h->pending_head == cm)
- trigger_next_request (h);
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Queueing REQUEST_CONNECT request\n");
+#endif
+ if (h->control_pending_head == cm)
+ trigger_next_request (h, GNUNET_NO);
return ret;
}
struct GNUNET_CORE_Handle *h = req->h;
struct ControlMessage *cm = req->cm;
- GNUNET_CONTAINER_DLL_remove (h->pending_head,
- h->pending_tail,
+ GNUNET_CONTAINER_DLL_remove (h->control_pending_head,
+ h->control_pending_tail,
cm);
GNUNET_free (cm);
GNUNET_free (req);
* CM was sent, remove link so we don't double-free.
*
* @param cls the 'struct GNUNET_CORE_InformationRequestContext'
- * @param tc scheduler context
+ * @param success were we successful?
*/
static void
change_preference_send_continuation (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+ int success)
{
struct GNUNET_CORE_InformationRequestContext *irc = cls;
}
irc = GNUNET_malloc (sizeof (struct GNUNET_CORE_InformationRequestContext));
irc->h = h;
+ irc->pr = pr;
irc->info = info;
irc->info_cls = info_cls;
cm = GNUNET_malloc (sizeof (struct ControlMessage) +
rim->reserve_inbound = htonl (amount);
rim->preference_change = GNUNET_htonll(preference);
rim->peer = *peer;
- GNUNET_CONTAINER_DLL_insert (h->pending_head,
- h->pending_tail,
+#if DEBUG_CORE
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Queueing CHANGE PREFERENCE request\n");
+#endif
+ GNUNET_CONTAINER_DLL_insert (h->control_pending_head,
+ h->control_pending_tail,
cm);
pr->pcic = info;
pr->pcic_cls = info_cls;
+ if (h->control_pending_head == cm)
+ trigger_next_request (h, GNUNET_NO);
return irc;
}
if (irc->cm != NULL)
{
- GNUNET_CONTAINER_DLL_remove (h->pending_head,
- h->pending_tail,
+ GNUNET_CONTAINER_DLL_remove (h->control_pending_head,
+ h->control_pending_tail,
irc->cm);
GNUNET_free (irc->cm);
}
}
-/* ********************* GNUNET_CORE_iterate_peers *********************** */
-
-/**
- * Context for 'iterate_peers' helper function.
- */
-struct IterationContext
-{
- /**
- * Callback to call.
- */
- GNUNET_CORE_ConnectEventHandler peer_cb;
-
- /**
- * Closure for 'peer_cb'.
- */
- void *cb_cls;
-};
-
-
-/**
- * Call callback for each peer.
- *
- * @param cls the 'struct IterationContext'
- * @param hc peer identity, not used
- * @param value the 'struct PeerRecord'
- * @return GNUNET_YES (continue iteration)
- */
-static int
-iterate_peers (void *cls,
- const GNUNET_HashCode *hc,
- void *value)
-{
- struct IterationContext *ic = cls;
- struct PeerRecord *pr = value;
-
- ic->peer_cb (ic->cb_cls,
- &pr->peer,
- NULL /* FIXME: pass atsi? */);
- return GNUNET_YES;
-}
-
-
-/**
- * Obtain statistics and/or change preferences for the given peer.
- *
- * @param h handle to core
- * @param peer_cb function to call with the peer information
- * @param cb_cls closure for peer_cb
- * @return GNUNET_OK if iterating, GNUNET_SYSERR on error
- */
-int
-GNUNET_CORE_iterate_peers (struct GNUNET_CORE_Handle *h,
- GNUNET_CORE_ConnectEventHandler peer_cb,
- void *cb_cls)
-{
- struct IterationContext ic;
-
- ic.peer_cb = peer_cb;
- ic.cb_cls = cb_cls;
- GNUNET_CONTAINER_multihashmap_iterate (h->peers,
- &iterate_peers,
- &ic);
- return GNUNET_OK;
-}
-
-
/* end of core_api.c */
projects / oweals / gnunet.git / blobdiff