#include "platform.h"
#include "gnunet_util_lib.h"
+#include "gnunet_core_service.h"
+
#include "gnunet-service-mesh_peer.h"
#include "gnunet-service-mesh_dht.h"
+#include "gnunet-service-mesh_connection.h"
+#include "gnunet-service-mesh_local.h"
#include "mesh_path.h"
/******************************************************************************/
/**
* Handle to stop the DHT search for paths to this peer
*/
- struct GNUNET_DHT_GetHandle *dhtget;
+ struct GMD_search_handle *search_h;
/**
* Tunnel to this peer, if any.
*/
static unsigned long long max_peers;
+/**
+ * Percentage of messages that will be dropped (for test purposes only).
+ */
+static unsigned long long drop_percent;
+
+/**
+ * Handle to communicate with core.
+ */
+static struct GNUNET_CORE_Handle *core_handle;
+
+/**
+ * Local peer own ID (full value).
+ */
+const static struct GNUNET_PeerIdentity *my_full_id;
+
+/******************************************************************************/
+/***************************** CORE CALLBACKS *********************************/
+/******************************************************************************/
+
+
+/**
+ * Iterator to notify all connections of a broken link. Mark connections
+ * to destroy after all traffic has been sent.
+ *
+ * @param cls Closure (peer disconnected).
+ * @param key Current key code (peer id).
+ * @param value Value in the hash map (connection).
+ *
+ * @return GNUNET_YES if we should continue to iterate,
+ * GNUNET_NO if not.
+ */
+static int
+notify_broken (void *cls,
+ const struct GNUNET_HashCode *key,
+ void *value)
+{
+ struct MeshPeer *peer = cls;
+ struct MeshConnection *c = value;
+
+ GMC_notify_broken (c, peer, my_full_id);
+
+ return GNUNET_YES;
+}
+
+/**
+ * Method called whenever a given peer connects.
+ *
+ * @param cls closure
+ * @param peer peer identity this notification is about
+ */
+static void
+core_connect (void *cls, const struct GNUNET_PeerIdentity *peer)
+{
+ struct MeshPeer *pi;
+ struct MeshPeerPath *path;
+
+ LOG ("Peer connected\n");
+ LOG (" %s\n", GNUNET_i2s (&my_full_id));
+ pi = peer_get (peer);
+ if (myid == pi->id)
+ {
+ DEBUG_CONN (" (self)\n");
+ path = path_new (1);
+ }
+ else
+ {
+ DEBUG_CONN (" %s\n", GNUNET_i2s (peer));
+ path = path_new (2);
+ path->peers[1] = pi->id;
+ GNUNET_PEER_change_rc (pi->id, 1);
+ GNUNET_STATISTICS_update (stats, "# peers", 1, GNUNET_NO);
+ }
+ path->peers[0] = myid;
+ GNUNET_PEER_change_rc (myid, 1);
+ peer_add_path (pi, path, GNUNET_YES);
+
+ pi->connections = GNUNET_CONTAINER_multihashmap_create (32, GNUNET_YES);
+ return;
+}
+
+
+/**
+ * Method called whenever a peer disconnects.
+ *
+ * @param cls closure
+ * @param peer peer identity this notification is about
+ */
+static void
+core_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
+{
+ struct MeshPeer *pi;
+
+ DEBUG_CONN ("Peer disconnected\n");
+ pi = GNUNET_CONTAINER_multipeermap_get (peers, peer);
+ if (NULL == pi)
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ GNUNET_CONTAINER_multihashmap_iterate (pi->connections, ¬ify_broken, pi);
+ GNUNET_CONTAINER_multihashmap_destroy (pi->connections);
+ pi->connections = NULL;
+ if (NULL != pi->core_transmit)
+ {
+ GNUNET_CORE_notify_transmit_ready_cancel (pi->core_transmit);
+ pi->core_transmit = NULL;
+ }
+ if (myid == pi->id)
+ {
+ DEBUG_CONN (" (self)\n");
+ }
+ GNUNET_STATISTICS_update (stats, "# peers", -1, GNUNET_NO);
+
+ return;
+}
+
+
+
+/**
+ * To be called on core init/fail.
+ *
+ * @param cls Closure (config)
+ * @param identity the public identity of this peer
+ */
+static void
+core_init (void *cls,
+ const struct GNUNET_PeerIdentity *identity)
+{
+ const struct GNUNET_CONFIGURATION_Handle *c = cls;
+ static int i = 0;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Core init\n");
+ if (0 != memcmp (identity, &my_full_id, sizeof (my_full_id)))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Wrong CORE service\n"));
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ " core id %s\n",
+ GNUNET_i2s (identity));
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ " my id %s\n",
+ GNUNET_i2s (&my_full_id));
+ GNUNET_CORE_disconnect (core_handle);
+ core_handle = GNUNET_CORE_connect (c, /* Main configuration */
+ NULL, /* Closure passed to MESH functions */
+ &core_init, /* Call core_init once connected */
+ &core_connect, /* Handle connects */
+ &core_disconnect, /* remove peers on disconnects */
+ NULL, /* Don't notify about all incoming messages */
+ GNUNET_NO, /* For header only in notification */
+ NULL, /* Don't notify about all outbound messages */
+ GNUNET_NO, /* For header-only out notification */
+ core_handlers); /* Register these handlers */
+ if (10 < i++)
+ GNUNET_abort();
+ }
+ GML_start ();
+ return;
+}
+
+/**
+ * Core callback to write a pre-constructed data packet to core buffer
+ *
+ * @param cls Closure (MeshTransmissionDescriptor with data in "data" member).
+ * @param size Number of bytes available in buf.
+ * @param buf Where the to write the message.
+ *
+ * @return number of bytes written to buf
+ */
+static size_t
+send_core_data_raw (void *cls, size_t size, void *buf)
+{
+ struct GNUNET_MessageHeader *msg = cls;
+ size_t total_size;
+
+ GNUNET_assert (NULL != msg);
+ total_size = ntohs (msg->size);
+
+ if (total_size > size)
+ {
+ GNUNET_break (0);
+ return 0;
+ }
+ memcpy (buf, msg, total_size);
+ GNUNET_free (cls);
+ return total_size;
+}
+
+
+/**
+ * Function to send a create connection message to a peer.
+ *
+ * @param c Connection to create.
+ * @param size number of bytes available in buf
+ * @param buf where the callee should write the message
+ * @return number of bytes written to buf
+ */
+static size_t
+send_core_connection_create (struct MeshConnection *c, size_t size, void *buf)
+{
+ struct GNUNET_MESH_ConnectionCreate *msg;
+ struct GNUNET_PeerIdentity *peer_ptr;
+ struct MeshPeerPath *p = c->path;
+ size_t size_needed;
+ int i;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending CONNECTION CREATE...\n");
+ size_needed =
+ sizeof (struct GNUNET_MESH_ConnectionCreate) +
+ p->length * sizeof (struct GNUNET_PeerIdentity);
+
+ if (size < size_needed || NULL == buf)
+ {
+ GNUNET_break (0);
+ return 0;
+ }
+ msg = (struct GNUNET_MESH_ConnectionCreate *) buf;
+ msg->header.size = htons (size_needed);
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_MESH_CONNECTION_CREATE);
+ msg->cid = c->id;
+
+ peer_ptr = (struct GNUNET_PeerIdentity *) &msg[1];
+ for (i = 0; i < p->length; i++)
+ {
+ GNUNET_PEER_resolve (p->peers[i], peer_ptr++);
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "CONNECTION CREATE (%u bytes long) sent!\n", size_needed);
+ return size_needed;
+}
+
+
+/**
+ * Creates a path ack message in buf and frees all unused resources.
+ *
+ * @param c Connection to send an ACK on.
+ * @param size number of bytes available in buf
+ * @param buf where the callee should write the message
+ *
+ * @return number of bytes written to buf
+ */
+static size_t
+send_core_connection_ack (struct MeshConnection *c, size_t size, void *buf)
+{
+ struct GNUNET_MESH_ConnectionACK *msg = buf;
+ struct MeshTunnel2 *t = c->t;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending CONNECTION ACK...\n");
+ GNUNET_assert (NULL != t);
+ if (sizeof (struct GNUNET_MESH_ConnectionACK) > size)
+ {
+ GNUNET_break (0);
+ return 0;
+ }
+ msg->header.size = htons (sizeof (struct GNUNET_MESH_ConnectionACK));
+ msg->header.type = htons (GNUNET_MESSAGE_TYPE_MESH_CONNECTION_ACK);
+ msg->cid = c->id;
+ msg->reserved = 0;
+
+ /* TODO add signature */
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "CONNECTION ACK sent!\n");
+ return sizeof (struct GNUNET_MESH_ConnectionACK);
+}
+
/******************************************************************************/
/******************************** STATIC ***********************************/
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
"removing peer %s, not in peermap\n", GNUNET_i2s (&id));
}
- if (NULL != peer->dhtget)
+ if (NULL != peer->search_h)
{
- GNUNET_DHT_get_stop (peer->dhtget);
+ GMD_search_stop (peer->search_h);
}
p = peer->path_head;
while (NULL != p)
}
+/**
+ * Adds a path to the peer_infos of all the peers in the path
+ *
+ * @param p Path to process.
+ * @param confirmed Whether we know if the path works or not.
+ */
+static void
+path_add_to_peers (struct MeshPeerPath *p, int confirmed)
+{
+ unsigned int i;
+
+ /* TODO: invert and add */
+ for (i = 0; i < p->length && p->peers[i] != myid; i++) /* skip'em */ ;
+ for (i++; i < p->length; i++)
+ {
+ struct MeshPeer *aux;
+ struct MeshPeerPath *copy;
+
+ aux = peer_get_short (p->peers[i]);
+ copy = path_duplicate (p);
+ copy->length = i + 1;
+ peer_add_path (aux, copy, p->length < 3 ? GNUNET_NO : confirmed);
+ }
+}
+
+
+/**
+ * Function to process paths received for a new peer addition. The recorded
+ * paths form the initial tunnel, which can be optimized later.
+ * Called on each result obtained for the DHT search.
+ *
+ * @param cls closure
+ * @param path
+ */
+static void
+search_handler (void *cls, struct MeshPeerPath *path)
+{
+ struct MeshPeer *peer = cls;
+ unsigned int connection_count;
+
+ path_add_to_peers (path, GNUNET_NO);
+
+ /* Count connections */
+ connection_count = GMC_count (peer->tunnel->connection_head);
+
+ /* If we already have 3 (or more (?!)) connections, it's enough */
+ if (3 <= connection_count)
+ return;
+
+ if (peer->tunnel->state == MESH_TUNNEL_SEARCHING)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " ... connect!\n");
+ GMP_connect (peer);
+ }
+ return;
+}
+
+
+/**
+ * Core callback to write a queued packet to core buffer
+ *
+ * @param cls Closure (peer info).
+ * @param size Number of bytes available in buf.
+ * @param buf Where the to write the message.
+ *
+ * @return number of bytes written to buf
+ */
+static size_t
+queue_send (void *cls, size_t size, void *buf)
+{
+ struct MeshPeer *peer = cls;
+ struct MeshFlowControl *fc;
+ struct MeshConnection *c;
+ struct GNUNET_MessageHeader *msg;
+ struct MeshPeerQueue *queue;
+ struct MeshTunnel2 *t;
+ struct MeshChannel *ch;
+ const struct GNUNET_PeerIdentity *dst_id;
+ size_t data_size;
+ uint32_t pid;
+ uint16_t type;
+ int fwd;
+
+ peer->core_transmit = NULL;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* Queue send (max %u)\n", size);
+
+ if (NULL == buf || 0 == size)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* Buffer size 0.\n");
+ return 0;
+ }
+
+ /* Initialize */
+ queue = peer_get_first_message (peer);
+ if (NULL == queue)
+ {
+ GNUNET_break (0); /* Core tmt_rdy should've been canceled */
+ return 0;
+ }
+ c = queue->c;
+ fwd = queue->fwd;
+ fc = fwd ? &c->fwd_fc : &c->bck_fc;
+
+ dst_id = GNUNET_PEER_resolve2 (peer->id);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* towards %s\n", GNUNET_i2s (dst_id));
+ /* Check if buffer size is enough for the message */
+ if (queue->size > size)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* not enough room, reissue\n");
+ peer->core_transmit =
+ GNUNET_CORE_notify_transmit_ready (core_handle,
+ GNUNET_NO,
+ 0,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ dst_id,
+ queue->size,
+ &queue_send,
+ peer);
+ return 0;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* size %u ok\n", queue->size);
+
+ t = (NULL != c) ? c->t : NULL;
+ type = 0;
+
+ /* Fill buf */
+ switch (queue->type)
+ {
+ case GNUNET_MESSAGE_TYPE_MESH_TUNNEL_DESTROY:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_DESTROY:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_BROKEN:
+ case GNUNET_MESSAGE_TYPE_MESH_FWD:
+ case GNUNET_MESSAGE_TYPE_MESH_BCK:
+ case GNUNET_MESSAGE_TYPE_MESH_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_POLL:
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "* raw: %s\n",
+ GNUNET_MESH_DEBUG_M2S (queue->type));
+ data_size = send_core_data_raw (queue->cls, size, buf);
+ msg = (struct GNUNET_MessageHeader *) buf;
+ type = ntohs (msg->type);
+ break;
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_CREATE:
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* path create\n");
+ if (GMC_is_origin (c, GNUNET_YES))
+ data_size = send_core_connection_create (queue->c, size, buf);
+ else
+ data_size = send_core_data_raw (queue->cls, size, buf);
+ break;
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_ACK:
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* path ack\n");
+ if (GMC_is_origin (c, GNUNET_NO) ||
+ GMC_is_origin (c, GNUNET_YES))
+ data_size = send_core_connection_ack (queue->c, size, buf);
+ else
+ data_size = send_core_data_raw (queue->cls, size, buf);
+ break;
+ case GNUNET_MESSAGE_TYPE_MESH_DATA:
+ case GNUNET_MESSAGE_TYPE_MESH_CHANNEL_CREATE:
+ case GNUNET_MESSAGE_TYPE_MESH_CHANNEL_DESTROY:
+ /* This should be encapsulted */
+ GNUNET_break (0);
+ data_size = 0;
+ break;
+ default:
+ GNUNET_break (0);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "* type unknown: %u\n",
+ queue->type);
+ data_size = 0;
+ }
+
+ if (0 < drop_percent &&
+ GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, 101) < drop_percent)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "Dropping message of type %s\n",
+ GNUNET_MESH_DEBUG_M2S (queue->type));
+ data_size = 0;
+ }
+
+ /* Free queue, but cls was freed by send_core_* */
+ ch = queue->ch;
+ queue_destroy (queue, GNUNET_NO);
+
+ /* Send ACK if needed, after accounting for sent ID in fc->queue_n */
+ switch (type)
+ {
+ case GNUNET_MESSAGE_TYPE_MESH_FWD:
+ case GNUNET_MESSAGE_TYPE_MESH_BCK:
+ pid = ntohl ( ((struct GNUNET_MESH_Encrypted *) buf)->pid );
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* accounting pid %u\n", pid);
+ fc->last_pid_sent = pid;
+ send_ack (c, ch, fwd);
+ break;
+ default:
+ break;
+ }
+
+ /* If more data in queue, send next */
+ queue = peer_get_first_message (peer);
+ if (NULL != queue)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* more data!\n");
+ if (NULL == peer->core_transmit) {
+ peer->core_transmit =
+ GNUNET_CORE_notify_transmit_ready(core_handle,
+ 0,
+ 0,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ dst_id,
+ queue->size,
+ &queue_send,
+ peer);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "* tmt rdy called somewhere else\n");
+ }
+ if (GNUNET_SCHEDULER_NO_TASK == fc->poll_task)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* starting poll timeout\n");
+ fc->poll_task =
+ GNUNET_SCHEDULER_add_delayed (fc->poll_time, &connection_poll, fc);
+ }
+ }
+ else
+ {
+ if (GNUNET_SCHEDULER_NO_TASK != fc->poll_task)
+ {
+ GNUNET_SCHEDULER_cancel (fc->poll_task);
+ fc->poll_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ }
+ if (NULL != c)
+ {
+ c->pending_messages--;
+ if (GNUNET_YES == c->destroy && 0 == c->pending_messages)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* destroying connection!\n");
+ GMC_destroy (c);
+ }
+ }
+
+ if (NULL != t)
+ {
+ t->pending_messages--;
+ if (GNUNET_YES == t->destroy && 0 == t->pending_messages)
+ {
+// GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* destroying tunnel!\n");
+ tunnel_destroy (t);
+ }
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "* Return %d\n", data_size);
+ return data_size;
+}
+
+
+
+/**
+ * Get first sendable message.
+ *
+ * @param peer The destination peer.
+ *
+ * @return Best current known path towards the peer, if any.
+ */
+static struct MeshPeerQueue *
+peer_get_first_message (const struct MeshPeer *peer)
+{
+ struct MeshPeerQueue *q;
+
+ for (q = peer->queue_head; NULL != q; q = q->next)
+ {
+ if (queue_is_sendable (q))
+ return q;
+ }
+
+ return NULL;
+}
+
+
+static int
+queue_is_sendable (struct MeshPeerQueue *q)
+{
+ struct MeshFlowControl *fc;
+
+ /* Is PID-independent? */
+ switch (q->type)
+ {
+ case GNUNET_MESSAGE_TYPE_MESH_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_POLL:
+ return GNUNET_YES;
+ }
+
+ /* Is PID allowed? */
+ fc = q->fwd ? &q->c->fwd_fc : &q->c->bck_fc;
+ if (GMC_is_pid_bigger (fc->last_ack_recv, fc->last_pid_sent))
+ return GNUNET_YES;
+
+ return GNUNET_NO;
+}
+
+
/******************************************************************************/
/******************************** API ***********************************/
/******************************************************************************/
+
+/**
+ * Free a transmission that was already queued with all resources
+ * associated to the request.
+ *
+ * @param queue Queue handler to cancel.
+ * @param clear_cls Is it necessary to free associated cls?
+ */
+void
+GMP_queue_destroy (struct MeshPeerQueue *queue, int clear_cls)
+{
+ struct MeshPeer *peer;
+ struct MeshFlowControl *fc;
+ int fwd;
+
+ fwd = queue->fwd;
+ peer = queue->peer;
+ GNUNET_assert (NULL != queue->c);
+ fc = fwd ? &queue->c->fwd_fc : &queue->c->bck_fc;
+
+ if (GNUNET_YES == clear_cls)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " queue destroy type %s\n",
+ GNUNET_MESH_DEBUG_M2S (queue->type));
+ switch (queue->type)
+ {
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_DESTROY:
+ case GNUNET_MESSAGE_TYPE_MESH_TUNNEL_DESTROY:
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO, "destroying a DESTROY message\n");
+ GNUNET_break (GNUNET_YES == queue->c->destroy);
+ /* fall through */
+ case GNUNET_MESSAGE_TYPE_MESH_FWD:
+ case GNUNET_MESSAGE_TYPE_MESH_BCK:
+ case GNUNET_MESSAGE_TYPE_MESH_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_POLL:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_CREATE:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_BROKEN:
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " prebuilt message\n");;
+ GNUNET_free_non_null (queue->cls);
+ break;
+
+ default:
+ GNUNET_break (0);
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, " type %s unknown!\n",
+ GNUNET_MESH_DEBUG_M2S (queue->type));
+ }
+
+ }
+ GNUNET_CONTAINER_DLL_remove (peer->queue_head, peer->queue_tail, queue);
+
+ if (queue->type != GNUNET_MESSAGE_TYPE_MESH_ACK &&
+ queue->type != GNUNET_MESSAGE_TYPE_MESH_POLL)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " Q_N- %p %u\n", fc, fc->queue_n);
+ fc->queue_n--;
+ peer->queue_n--;
+ }
+ if (NULL != queue->c)
+ {
+ queue->c->pending_messages--;
+ if (NULL != queue->c->t)
+ {
+ queue->c->t->pending_messages--;
+ }
+ }
+
+ GNUNET_free (queue);
+}
+
+
+/**
+ * @brief Queue and pass message to core when possible.
+ *
+ * @param cls Closure (@c type dependant). It will be used by queue_send to
+ * build the message to be sent if not already prebuilt.
+ * @param type Type of the message, 0 for a raw message.
+ * @param size Size of the message.
+ * @param c Connection this message belongs to (cannot be NULL).
+ * @param ch Channel this message belongs to, if applicable (otherwise NULL).
+ * @param fwd Is this a message going root->dest? (FWD ACK are NOT FWD!)
+ */
+void
+GMP_queue_add (void *cls, uint16_t type, size_t size,
+ struct MeshConnection *c,
+ struct MeshChannel *ch,
+ int fwd)
+{
+ struct MeshPeerQueue *queue;
+ struct MeshFlowControl *fc;
+ struct MeshPeer *peer;
+ int priority;
+ int call_core;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "queue add %s %s (%u) on c %p, ch %p\n",
+ fwd ? "FWD" : "BCK", GNUNET_MESH_DEBUG_M2S (type), size, c, ch);
+ GNUNET_assert (NULL != c);
+
+ fc = fwd ? &c->fwd_fc : &c->bck_fc;
+ peer = fwd ? connection_get_next_hop (c) : connection_get_prev_hop (c);
+
+ if (NULL == fc)
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ if (NULL == peer->connections)
+ {
+ /* We are not connected to this peer, ignore request. */
+ GNUNET_break_op (0);
+ return;
+ }
+
+ priority = 0;
+
+ if (GNUNET_MESSAGE_TYPE_MESH_POLL == type ||
+ GNUNET_MESSAGE_TYPE_MESH_ACK == type)
+ {
+ priority = 100;
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "priority %d\n", priority);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "fc %p\n", fc);
+ if (fc->queue_n >= fc->queue_max && 0 == priority)
+ {
+ GNUNET_STATISTICS_update (stats, "# messages dropped (buffer full)",
+ 1, GNUNET_NO);
+ GNUNET_break (0);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "queue full: %u/%u\n",
+ fc->queue_n, fc->queue_max);
+ return; /* Drop this message */
+ }
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "last pid %u\n", fc->last_pid_sent);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " ack %u\n", fc->last_ack_recv);
+ if (GMC_is_pid_bigger (fc->last_pid_sent + 1, fc->last_ack_recv))
+ {
+ call_core = GNUNET_NO;
+ if (GNUNET_SCHEDULER_NO_TASK == fc->poll_task &&
+ GNUNET_MESSAGE_TYPE_MESH_POLL != type)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "no buffer space (%u > %u): starting poll\n",
+ fc->last_pid_sent + 1, fc->last_ack_recv);
+ fc->poll_task = GNUNET_SCHEDULER_add_delayed (fc->poll_time,
+ &connection_poll,
+ fc);
+ }
+ }
+ else
+ call_core = GNUNET_YES;
+ queue = GNUNET_malloc (sizeof (struct MeshPeerQueue));
+ queue->cls = cls;
+ queue->type = type;
+ queue->size = size;
+ queue->peer = peer;
+ queue->c = c;
+ queue->ch = ch;
+ queue->fwd = fwd;
+ if (100 <= priority)
+ {
+ struct MeshPeerQueue *copy;
+ struct MeshPeerQueue *next;
+
+ for (copy = peer->queue_head; NULL != copy; copy = next)
+ {
+ next = copy->next;
+ if (copy->type == type && copy->c == c && copy->fwd == fwd)
+ {
+ /* Example: also a FWD ACK for connection XYZ */
+ queue_destroy (copy, GNUNET_YES);
+ }
+ }
+ GNUNET_CONTAINER_DLL_insert (peer->queue_head, peer->queue_tail, queue);
+ }
+ else
+ {
+ GNUNET_CONTAINER_DLL_insert_tail (peer->queue_head, peer->queue_tail, queue);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, " Q_N+ %p %u\n", fc, fc->queue_n);
+ fc->queue_n++;
+ peer->queue_n++;
+ }
+
+ if (NULL == peer->core_transmit && GNUNET_YES == call_core)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "calling core tmt rdy towards %s for %u bytes\n",
+ peer2s (peer), size);
+ peer->core_transmit =
+ GNUNET_CORE_notify_transmit_ready (core_handle,
+ 0,
+ 0,
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ GNUNET_PEER_resolve2 (peer->id),
+ size,
+ &queue_send,
+ peer);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "core tmt rdy towards %s already called\n",
+ peer2s (peer));
+
+ }
+ c->pending_messages++;
+ if (NULL != c->t)
+ c->t->pending_messages++;
+}
+
+
+
/**
* Initialize the peer subsystem.
*
* @param c Configuration.
+ * @param id Peer identity
*/
void
-GMP_init (const struct GNUNET_CONFIGURATION_Handle *c)
+GMP_init (const struct GNUNET_CONFIGURATION_Handle *c,
+ const struct GNUNET_PeerIdentity *id)
{
+ my_full_id = id;
peers = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (c, "MESH", "MAX_PEERS",
"MESH", "MAX_PEERS", "USING DEFAULT");
max_peers = 1000;
}
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (c, "MESH", "DROP_PERCENT",
+ &drop_percent))
+ {
+ drop_percent = 0;
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "\n***************************************\n"
+ "Mesh is running with drop mode enabled.\n"
+ "This is NOT a good idea!\n"
+ "Remove the DROP_PERCENT option from your configuration.\n"
+ "***************************************\n");
+ }
+
+ core_handle = GNUNET_CORE_connect (c, /* Main configuration */
+ NULL, /* Closure passed to MESH functions */
+ &core_init, /* Call core_init once connected */
+ &core_connect, /* Handle connects */
+ &core_disconnect, /* remove peers on disconnects */
+ NULL, /* Don't notify about all incoming messages */
+ GNUNET_NO, /* For header only in notification */
+ NULL, /* Don't notify about all outbound messages */
+ GNUNET_NO, /* For header-only out notification */
+ core_handlers); /* Register these handlers */
+ if (NULL == core_handle)
+ {
+ GNUNET_break (0);
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
}
/**
struct MeshTunnel2 *t;
struct MeshPeerPath *p;
struct MeshConnection *c;
- int rerun_dhtget;
+ int rerun_search;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"peer_connect towards %s\n",
peer2s (peer));
t = peer->tunnel;
c = NULL;
- rerun_dhtget = GNUNET_NO;
+ rerun_search = GNUNET_NO;
if (NULL != peer->path_head)
{
* Re-running the DHT GET should give core time to callback.
*/
GNUNET_break(0);
- rerun_dhtget = GNUNET_YES;
+ rerun_search = GNUNET_YES;
}
else
{
}
}
- if (NULL != peer->dhtget && GNUNET_YES == rerun_dhtget)
+ if (NULL != peer->search_h && GNUNET_YES == rerun_search)
{
- GNUNET_DHT_get_stop (peer->dhtget);
- peer->dhtget = NULL;
+ GMD_search_stop (peer->search_h);
+ peer->search_h = NULL;
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
" Stopping DHT GET for peer %s\n", peer2s (peer));
}
- if (NULL == peer->dhtget)
+ if (NULL == peer->search_h)
{
const struct GNUNET_PeerIdentity *id;
- struct GNUNET_HashCode phash;
id = GNUNET_PEER_resolve2 (peer->id);
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
" Starting DHT GET for peer %s\n", peer2s (peer));
- GNUNET_CRYPTO_hash (&id, sizeof (struct GNUNET_PeerIdentity), &phash);
- peer->dhtget = GNUNET_DHT_get_start (dht_handle, /* handle */
- GNUNET_BLOCK_TYPE_MESH_PEER, /* type */
- &phash, /* key to search */
- dht_replication_level, /* replication level */
- GNUNET_DHT_RO_RECORD_ROUTE |
- GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE,
- NULL, /* xquery */
- 0, /* xquery bits */
- &dht_get_id_handler, peer);
+ peer->search_h = GMD_search (id, &search_handler, peer);
if (MESH_TUNNEL_NEW == t->state)
tunnel_change_state (t, MESH_TUNNEL_SEARCHING);
}
+}
+
+/**
+ * Get the static string for a peer ID.
+ *
+ * @param peer Peer.
+ *
+ * @return Static string for it's ID.
+ */
+const char *
+GMP_2s (const struct MeshPeer *peer)
+{
+ if (NULL == peer)
+ return "(NULL)";
+ return GNUNET_i2s (GNUNET_PEER_resolve2 (peer->id));
}
\ No newline at end of file