#include "platform.h"
#include "gnunet_util_lib.h"
+#include "gnunet_transport_service.h"
#include "gnunet_core_service.h"
#include "gnunet_statistics_service.h"
-#include "mesh_protocol_enc.h"
+#include "mesh_protocol.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 "gnunet-service-mesh_tunnel.h"
#include "mesh_path.h"
*/
int fwd;
- /**
- * Channel this message belongs to, if known.
- */
- struct MeshChannel *ch;
-
/**
* Pointer to info stucture used as cls.
*/
/**
* Tunnel to this peer, if any.
*/
- struct MeshTunnel2 *tunnel;
+ struct MeshTunnel3 *tunnel;
/**
* Connections that go through this peer, indexed by tid;
* How many messages are in the queue to this peer.
*/
unsigned int queue_n;
+
+ /**
+ * Hello message.
+ */
+ struct GNUNET_HELLO_Message* hello;
};
*/
extern struct GNUNET_STATISTICS_Handle *stats;
+/**
+ * Local peer own ID (full value).
+ */
+extern struct GNUNET_PeerIdentity my_full_id;
+
+/**
+ * Local peer own ID (short)
+ */
+extern GNUNET_PEER_Id myid;
+
/**
* Peers known, indexed by PeerIdentity (MeshPeer).
*/
*/
static struct GNUNET_CORE_Handle *core_handle;
-/**
- * Local peer own ID (full value).
- */
-const static struct GNUNET_PeerIdentity *my_full_id;
+static struct GNUNET_TRANSPORT_Handle *transport_handle;
+
/******************************************************************************/
/***************************** CORE CALLBACKS *********************************/
* @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.
+ * @return #GNUNET_YES to continue to iterate.
*/
static int
notify_broken (void *cls,
struct MeshPeer *peer = cls;
struct MeshConnection *c = value;
- GMC_notify_broken (c, peer, my_full_id);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " notifying %s due to %s\n",
+ GMC_2s (c), GMP_2s (peer));
+ GMC_notify_broken (c, peer);
return GNUNET_YES;
}
+/**
+ * Remove the direct path to the peer.
+ *
+ * @param peer Peer to remove the direct path from.
+ *
+ */
+static struct MeshPeerPath *
+pop_direct_path (struct MeshPeer *peer)
+{
+ struct MeshPeerPath *iter;
+
+ for (iter = peer->path_head; NULL != iter; iter = iter->next)
+ {
+ if (2 <= iter->length)
+ {
+ GNUNET_CONTAINER_DLL_remove (peer->path_head, peer->path_tail, iter);
+ return iter;
+ }
+ }
+ return NULL;
+}
+
+
+
/**
* Method called whenever a given peer connects.
*
static void
core_connect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
- struct MeshPeer *pi;
+ struct MeshPeer *mp;
struct MeshPeerPath *path;
- LOG ("Peer connected\n");
- LOG (" %s\n", GNUNET_i2s (&my_full_id));
- pi = peer_get (peer);
- if (myid == pi->id)
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer connected\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " %s\n", GNUNET_i2s (&my_full_id));
+ mp = GMP_get (peer);
+ if (myid == mp->id)
{
- LOG (" (self)\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " (self)\n");
path = path_new (1);
}
else
{
- LOG (" %s\n", GNUNET_i2s (peer));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " %s\n", GNUNET_i2s (peer));
path = path_new (2);
- path->peers[1] = pi->id;
- GNUNET_PEER_change_rc (pi->id, 1);
+ path->peers[1] = mp->id;
+ GNUNET_PEER_change_rc (mp->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);
+ GMP_add_path (mp, path, GNUNET_YES);
- pi->connections = GNUNET_CONTAINER_multihashmap_create (32, GNUNET_YES);
+ mp->connections = GNUNET_CONTAINER_multihashmap_create (32, GNUNET_YES);
return;
}
static void
core_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
- struct MeshPeer *pi;
+ struct MeshPeer *p;
+ struct MeshPeerPath *direct_path;
- LOG ("Peer disconnected\n");
- pi = GNUNET_CONTAINER_multipeermap_get (peers, peer);
- if (NULL == pi)
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer disconnected\n");
+ p = GNUNET_CONTAINER_multipeermap_get (peers, peer);
+ if (NULL == p)
{
GNUNET_break (0);
return;
}
+ if (myid == p->id)
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " (self: %s)\n", GMP_2s (p));
+ else
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " %s\n", GMP_2s (p));
- GNUNET_CONTAINER_multihashmap_iterate (pi->connections, ¬ify_broken, pi);
- GNUNET_CONTAINER_multihashmap_destroy (pi->connections);
- pi->connections = NULL;
- if (NULL != pi->core_transmit)
+ direct_path = pop_direct_path (p);
+ GNUNET_CONTAINER_multihashmap_iterate (p->connections, ¬ify_broken, p);
+ GNUNET_CONTAINER_multihashmap_destroy (p->connections);
+ p->connections = NULL;
+ if (NULL != p->core_transmit)
{
- GNUNET_CORE_notify_transmit_ready_cancel (pi->core_transmit);
- pi->core_transmit = NULL;
+ GNUNET_CORE_notify_transmit_ready_cancel (p->core_transmit);
+ p->core_transmit = NULL;
}
- if (myid == pi->id)
- {
- LOG (" (self)\n");
- }
GNUNET_STATISTICS_update (stats, "# peers", -1, GNUNET_NO);
+ path_destroy (direct_path);
return;
}
sizeof (struct GNUNET_MESH_ConnectionBroken)},
{&GMC_handle_destroy, GNUNET_MESSAGE_TYPE_MESH_CONNECTION_DESTROY,
sizeof (struct GNUNET_MESH_ConnectionDestroy)},
- {&GMC_handle_keepalive, GNUNET_MESSAGE_TYPE_MESH_FWD_KEEPALIVE,
- sizeof (struct GNUNET_MESH_ConnectionKeepAlive)},
- {&GMC_handle_keepalive, GNUNET_MESSAGE_TYPE_MESH_BCK_KEEPALIVE,
+ {&GMC_handle_keepalive, GNUNET_MESSAGE_TYPE_MESH_KEEPALIVE,
sizeof (struct GNUNET_MESH_ConnectionKeepAlive)},
{&GMC_handle_ack, GNUNET_MESSAGE_TYPE_MESH_ACK,
sizeof (struct GNUNET_MESH_ACK)},
{&GMC_handle_poll, GNUNET_MESSAGE_TYPE_MESH_POLL,
sizeof (struct GNUNET_MESH_Poll)},
- {&GMC_handle_fwd, GNUNET_MESSAGE_TYPE_MESH_FWD, 0},
- {&GMC_handle_bck, GNUNET_MESSAGE_TYPE_MESH_BCK, 0},
+ {&GMC_handle_encrypted, GNUNET_MESSAGE_TYPE_MESH_ENCRYPTED, 0},
+ {&GMC_handle_kx, GNUNET_MESSAGE_TYPE_MESH_KX, 0},
{NULL, 0, 0}
};
{
struct GNUNET_MESH_ConnectionCreate *msg;
struct GNUNET_PeerIdentity *peer_ptr;
- struct MeshPeerPath *p = c->path;
+ const struct MeshPeerPath *p = GMC_get_path (c);
size_t size_needed;
int i;
+ if (NULL == p)
+ return 0;
+
LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending CONNECTION CREATE...\n");
size_needed =
sizeof (struct GNUNET_MESH_ConnectionCreate) +
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;
+ msg->cid = *GMC_get_id (c);
peer_ptr = (struct GNUNET_PeerIdentity *) &msg[1];
for (i = 0; i < p->length; i++)
}
LOG (GNUNET_ERROR_TYPE_DEBUG,
- "CONNECTION CREATE (%u bytes long) sent!\n", size_needed);
+ "CONNECTION CREATE (%u bytes long) sent!\n",
+ size_needed);
return size_needed;
}
send_core_connection_ack (struct MeshConnection *c, size_t size, void *buf)
{
struct GNUNET_MESH_ConnectionACK *msg = buf;
- struct MeshTunnel2 *t = c->t;
LOG (GNUNET_ERROR_TYPE_DEBUG, "Sending CONNECTION ACK...\n");
- GNUNET_assert (NULL != t);
if (sizeof (struct GNUNET_MESH_ConnectionACK) > size)
{
GNUNET_break (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->cid = *GMC_get_id (c);
msg->reserved = 0;
/* TODO add signature */
/******************************** STATIC ***********************************/
/******************************************************************************/
+
+/**
+ * Get priority for a queued message.
+ *
+ * @param q Queued message
+ *
+ * @return CORE priority to use.
+ */
+static enum GNUNET_CORE_Priority
+get_priority (struct MeshPeerQueue *q)
+{
+ enum GNUNET_CORE_Priority low;
+ enum GNUNET_CORE_Priority high;
+
+ if (NULL == q)
+ {
+ GNUNET_break (0);
+ return GNUNET_CORE_PRIO_BACKGROUND;
+ }
+
+ /* Relayed traffic has lower priority, our own traffic has higher */
+ if (NULL == q->c || GNUNET_NO == GMC_is_origin (q->c, q->fwd))
+ {
+ low = GNUNET_CORE_PRIO_BEST_EFFORT;
+ high = GNUNET_CORE_PRIO_URGENT;
+ }
+ else
+ {
+ low = GNUNET_CORE_PRIO_URGENT;
+ high = GNUNET_CORE_PRIO_CRITICAL_CONTROL;
+ }
+
+ /* Bulky payload has lower priority, control traffic has higher. */
+ if (GNUNET_MESSAGE_TYPE_MESH_ENCRYPTED == q->type)
+ return low;
+ else
+ return high;
+}
+
+
/**
* Iterator over tunnel hash map entries to destroy the tunnel during shutdown.
*
void *value)
{
struct MeshPeer *p = value;
- struct MeshTunnel2 *t = p->tunnel;
+ struct MeshTunnel3 *t = p->tunnel;
if (NULL != t)
GMT_destroy (t);
}
-
/**
* Destroy the peer_info and free any allocated resources linked to it
*
GNUNET_PEER_resolve (peer->id, &id);
GNUNET_PEER_change_rc (peer->id, -1);
+ LOG (GNUNET_ERROR_TYPE_WARNING, "destroying peer %s\n", GNUNET_i2s (&id));
+
if (GNUNET_YES !=
GNUNET_CONTAINER_multipeermap_remove (peers, &id, peer))
{
GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "removing peer %s, not in peermap\n", GNUNET_i2s (&id));
+ LOG (GNUNET_ERROR_TYPE_WARNING, " not in peermap!!\n");
}
- if (NULL != peer->search_h)
- {
- GMD_search_stop (peer->search_h);
- }
- p = peer->path_head;
- while (NULL != p)
- {
- nextp = p->next;
- GNUNET_CONTAINER_DLL_remove (peer->path_head, peer->path_tail, p);
- path_destroy (p);
- p = nextp;
- }
- tunnel_destroy_empty (peer->tunnel);
- GNUNET_free (peer);
- return GNUNET_OK;
+ if (NULL != peer->search_h)
+ {
+ GMD_search_stop (peer->search_h);
+ }
+ p = peer->path_head;
+ while (NULL != p)
+ {
+ nextp = p->next;
+ GNUNET_CONTAINER_DLL_remove (peer->path_head, peer->path_tail, p);
+ path_destroy (p);
+ p = nextp;
+ }
+ GMT_destroy_empty (peer->tunnel);
+ GNUNET_free (peer);
+ return GNUNET_OK;
}
/**
- * Returns if peer is used (has a tunnel, is neighbor).
+ * Returns if peer is used (has a tunnel or is neighbor).
*
- * @peer Peer to check.
+ * @param peer Peer to check.
*
- * @return GNUNET_YES if peer is in use.
+ * @return #GNUNET_YES if peer is in use.
*/
static int
peer_is_used (struct MeshPeer *peer)
struct MeshPeer *p = value;
struct GNUNET_TIME_Absolute *abs = cls;
+ LOG (GNUNET_ERROR_TYPE_WARNING,
+ "peer %s timeout\n", GNUNET_i2s (key));
+
if (p->last_contact.abs_value_us == abs->abs_value_us &&
- GNUNET_NO == peer_is_used (p))
+ GNUNET_NO == peer_is_used (p))
{
peer_destroy (p);
return GNUNET_NO;
/**
- * Retrieve the MeshPeer stucture associated with the peer, create one
- * and insert it in the appropriate structures if the peer is not known yet.
- *
- * @param peer Full identity of the peer.
- *
- * @return Existing or newly created peer info.
- */
-static struct MeshPeer *
-peer_get (const struct GNUNET_PeerIdentity *peer_id)
-{
- struct MeshPeer *peer;
-
- peer = GNUNET_CONTAINER_multipeermap_get (peers, peer_id);
- if (NULL == peer)
- {
- peer = GNUNET_new (struct MeshPeer);
- if (GNUNET_CONTAINER_multipeermap_size (peers) > max_peers)
- {
- peer_delete_oldest ();
- }
- GNUNET_CONTAINER_multipeermap_put (peers, peer_id, peer,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
- peer->id = GNUNET_PEER_intern (peer_id);
- }
- peer->last_contact = GNUNET_TIME_absolute_get();
-
- return peer;
-}
-
-
-/**
- * Retrieve the MeshPeer stucture associated with the peer, create one
- * and insert it in the appropriate structures if the peer is not known yet.
- *
- * @param peer Short identity of the peer.
- *
- * @return Existing or newly created peer info.
- */
-static struct MeshPeer *
-peer_get_short (const GNUNET_PEER_Id peer)
-{
- return peer_get (GNUNET_PEER_resolve2 (peer));
-}
-
-
-/**
- * Get a cost of a path for a peer considering existing tunnel connections.
- *
- * @param peer Peer towards which the path is considered.
- * @param path Candidate path.
- *
- * @return Cost of the path (path length + number of overlapping nodes)
- */
-static unsigned int
-peer_get_path_cost (const struct MeshPeer *peer,
- const struct MeshPeerPath *path)
-{
- struct MeshConnection *c;
- unsigned int overlap;
- unsigned int i;
- unsigned int j;
-
- if (NULL == path)
- return 0;
-
- overlap = 0;
- GNUNET_assert (NULL != peer->tunnel);
-
- for (i = 0; i < path->length; i++)
- {
- for (c = peer->tunnel->connection_head; NULL != c; c = c->next)
- {
- for (j = 0; j < c->path->length; j++)
- {
- if (path->peers[i] == c->path->peers[j])
- {
- overlap++;
- break;
- }
- }
- }
- }
- return (path->length + overlap) * (path->score * -1);
-}
-
-
-/**
- * Choose the best path towards a peer considering the tunnel properties.
+ * Choose the best (yet unused) path towards a peer,
+ * considering the tunnel properties.
*
* @param peer The destination peer.
*
{
struct MeshPeerPath *best_p;
struct MeshPeerPath *p;
- struct MeshConnection *c;
unsigned int best_cost;
unsigned int cost;
best_p = NULL;
for (p = peer->path_head; NULL != p; p = p->next)
{
- for (c = peer->tunnel->connection_head; NULL != c; c = c->next)
- if (c->path == p)
- break;
- if (NULL != c)
- continue; /* If path is in use in a connection, skip it. */
+ if (GNUNET_YES == GMT_is_path_used (peer->tunnel, p))
+ continue; /* If path is already in use, skip it. */
+
+ if (GNUNET_NO == path_is_valid (p))
+ continue; /* Don't use invalid paths. */
- if ((cost = peer_get_path_cost (peer, p)) < best_cost)
- {
- best_cost = cost;
- best_p = p;
- }
+ if ((cost = GMT_get_path_cost (peer->tunnel, p)) < best_cost)
+ {
+ best_cost = cost;
+ best_p = p;
+ }
}
- return best_p;
+ return best_p;
}
-/**
- * Add the path to the peer and update the path used to reach it in case this
- * is the shortest.
- *
- * @param peer_info Destination peer to add the path to.
- * @param path New path to add. Last peer must be the peer in arg 1.
- * Path will be either used of freed if already known.
- * @param trusted Do we trust that this path is real?
- */
-void
-peer_add_path (struct MeshPeer *peer_info, struct MeshPeerPath *path,
- int trusted)
+static int
+queue_is_sendable (struct MeshPeerQueue *q)
{
- struct MeshPeerPath *aux;
- unsigned int l;
- unsigned int l2;
-
- if ((NULL == peer_info) || (NULL == path))
+ /* Is PID-independent? */
+ switch (q->type)
{
- GNUNET_break (0);
- path_destroy (path);
- return;
- }
- if (path->peers[path->length - 1] != peer_info->id)
- {
+ case GNUNET_MESSAGE_TYPE_MESH_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_POLL:
+ case GNUNET_MESSAGE_TYPE_MESH_KX:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_CREATE:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_DESTROY:
+ case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_BROKEN:
+ case GNUNET_MESSAGE_TYPE_MESH_KEEPALIVE:
+ return GNUNET_YES;
+
+ case GNUNET_MESSAGE_TYPE_MESH_ENCRYPTED:
+ break;
+
+ default:
GNUNET_break (0);
- path_destroy (path);
- return;
- }
- if (2 >= path->length && GNUNET_NO == trusted)
- {
- /* Only allow CORE to tell us about direct paths */
- path_destroy (path);
- return;
- }
- for (l = 1; l < path->length; l++)
- {
- if (path->peers[l] == myid)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "shortening path by %u\n", l);
- for (l2 = 0; l2 < path->length - l; l2++)
- {
- path->peers[l2] = path->peers[l + l2];
- }
- path->length -= l;
- l = 1;
- path->peers =
- GNUNET_realloc (path->peers, path->length * sizeof (GNUNET_PEER_Id));
- }
- }
-
- LOG (GNUNET_ERROR_TYPE_DEBUG, "adding path [%u] to peer %s\n",
- path->length, peer2s (peer_info));
-
- l = path_get_length (path);
- if (0 == l)
- {
- path_destroy (path);
- return;
- }
-
- GNUNET_assert (peer_info->id == path->peers[path->length - 1]);
- for (aux = peer_info->path_head; aux != NULL; aux = aux->next)
- {
- l2 = path_get_length (aux);
- if (l2 > l)
- {
- GNUNET_CONTAINER_DLL_insert_before (peer_info->path_head,
- peer_info->path_tail, aux, path);
- return;
- }
- else
- {
- if (l2 == l && memcmp (path->peers, aux->peers, l) == 0)
- {
- path_destroy (path);
- return;
- }
- }
- }
- GNUNET_CONTAINER_DLL_insert_tail (peer_info->path_head, peer_info->path_tail,
- path);
- return;
-}
+ }
+ if (GMC_is_sendable (q->c, q->fwd))
+ return GNUNET_YES;
-/**
- * Add the path to the origin peer and update the path used to reach it in case
- * this is the shortest.
- * The path is given in peer_info -> destination, therefore we turn the path
- * upside down first.
- *
- * @param peer_info Peer to add the path to, being the origin of the path.
- * @param path New path to add after being inversed.
- * Path will be either used or freed.
- * @param trusted Do we trust that this path is real?
- */
-static void
-peer_add_path_to_origin (struct MeshPeer *peer_info,
- struct MeshPeerPath *path, int trusted)
-{
- if (NULL == path)
- return;
- path_invert (path);
- peer_add_path (peer_info, path, trusted);
+ return GNUNET_NO;
}
/**
- * Adds a path to the peer_infos of all the peers in the path
+ * Get first sendable message.
*
- * @param p Path to process.
- * @param confirmed Whether we know if the path works or not.
+ * @param peer The destination peer.
+ *
+ * @return Best current known path towards the peer, if any.
*/
-static void
-path_add_to_peers (struct MeshPeerPath *p, int confirmed)
+static struct MeshPeerQueue *
+peer_get_first_message (const struct MeshPeer *peer)
{
- unsigned int i;
+ struct MeshPeerQueue *q;
- /* TODO: invert and add */
- for (i = 0; i < p->length && p->peers[i] != myid; i++) /* skip'em */ ;
- for (i++; i < p->length; i++)
+ for (q = peer->queue_head; NULL != q; q = q->next)
{
- 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);
+ if (queue_is_sendable (q))
+ return q;
}
+
+ return NULL;
}
* @param path
*/
static void
-search_handler (void *cls, struct MeshPeerPath *path)
+search_handler (void *cls, const struct MeshPeerPath *path)
{
struct MeshPeer *peer = cls;
unsigned int connection_count;
- path_add_to_peers (path, GNUNET_NO);
+ GMP_add_path_to_all (path, GNUNET_NO);
/* Count connections */
- connection_count = GMC_count (peer->tunnel->connection_head);
+ connection_count = GMT_count_connections (peer->tunnel);
/* If we already have 3 (or more (?!)) connections, it's enough */
if (3 <= connection_count)
return;
- if (peer->tunnel->state == MESH_TUNNEL3_SEARCHING)
+ if (MESH_TUNNEL3_SEARCHING == GMT_get_cstate (peer->tunnel))
{
LOG (GNUNET_ERROR_TYPE_DEBUG, " ... connect!\n");
GMP_connect (peer);
}
+
/**
* Core callback to write a queued packet to core buffer
*
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;
- LOG (GNUNET_ERROR_TYPE_DEBUG, "* Queue send (max %u)\n", size);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "* Queue send towards %s (max %u)\n",
+ GMP_2s (peer), size);
if (NULL == buf || 0 == size)
{
return 0;
}
c = queue->c;
- fwd = queue->fwd;
- fc = fwd ? &c->fwd_fc : &c->bck_fc;
dst_id = GNUNET_PEER_resolve2 (peer->id);
- LOG (GNUNET_ERROR_TYPE_DEBUG, "* towards %s\n", GNUNET_i2s (dst_id));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "* on connection %s\n", GMC_2s (c));
/* Check if buffer size is enough for the message */
if (queue->size > size)
{
LOG (GNUNET_ERROR_TYPE_DEBUG, "* not enough room, reissue\n");
peer->core_transmit =
GNUNET_CORE_notify_transmit_ready (core_handle,
- GNUNET_NO,
- 0,
+ GNUNET_NO, get_priority (queue),
GNUNET_TIME_UNIT_FOREVER_REL,
dst_id,
queue->size,
}
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_TUNNEL3_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_KEEPALIVE:
+ case GNUNET_MESSAGE_TYPE_MESH_ENCRYPTED:
+ case GNUNET_MESSAGE_TYPE_MESH_KX:
case GNUNET_MESSAGE_TYPE_MESH_ACK:
case GNUNET_MESSAGE_TYPE_MESH_POLL:
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "* raw: %s\n",
- GNUNET_MESH_DEBUG_M2S (queue->type));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "* raw: %s\n", GM_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:
LOG (GNUNET_ERROR_TYPE_DEBUG, "* path create\n");
break;
default:
GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_WARNING, "* type unknown: %u\n",
- queue->type);
+ LOG (GNUNET_ERROR_TYPE_WARNING, "* type unknown: %u\n", queue->type);
data_size = 0;
}
{
LOG (GNUNET_ERROR_TYPE_WARNING,
"Dropping message of type %s\n",
- GNUNET_MESH_DEBUG_M2S (queue->type));
+ GM_m2s (queue->type));
data_size = 0;
}
- if (NULL != queue->callback)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "* Calling callback\n");
- queue->callback (queue->callback_cls,
- queue->c,
- GNUNET_TIME_absolute_get_duration (queue->start_waiting));
- }
-
/* Free queue, but cls was freed by send_core_* */
- ch = queue->ch;
GMP_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 );
- 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)
{
LOG (GNUNET_ERROR_TYPE_DEBUG, "* more data!\n");
- if (NULL == peer->core_transmit) {
+ 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);
+ GNUNET_CORE_notify_transmit_ready (core_handle,
+ GNUNET_NO, get_priority (queue),
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ dst_id,
+ queue->size,
+ &queue_send,
+ peer);
queue->start_waiting = GNUNET_TIME_absolute_get ();
}
else
LOG (GNUNET_ERROR_TYPE_DEBUG,
"* tmt rdy called somewhere else\n");
}
- if (GNUNET_SCHEDULER_NO_TASK == fc->poll_task)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "* starting poll timeout\n");
- fc->poll_task =
- GNUNET_SCHEDULER_add_delayed (fc->poll_time, &connection_poll, fc);
- }
+// GMC_start_poll (); FIXME needed?
}
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)
- {
- LOG (GNUNET_ERROR_TYPE_DEBUG, "* destroying connection!\n");
- GMC_destroy (c);
- }
+// GMC_stop_poll(); FIXME needed?
}
- if (NULL != t)
- {
- t->pending_messages--;
- if (GNUNET_YES == t->destroy && 0 == t->pending_messages)
- {
-// LOG (GNUNET_ERROR_TYPE_DEBUG, "* destroying tunnel!\n");
- tunnel_destroy (t);
- }
- }
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 ***********************************/
-/******************************************************************************/
+/******************************************************************************/
+/******************************** API ***********************************/
+/******************************************************************************/
/**
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)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " queue destroy type %s\n",
- GNUNET_MESH_DEBUG_M2S (queue->type));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "# queue destroy type %s\n",
+ GM_m2s (queue->type));
switch (queue->type)
{
case GNUNET_MESSAGE_TYPE_MESH_CONNECTION_DESTROY:
- case GNUNET_MESSAGE_TYPE_MESH_TUNNEL3_DESTROY:
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:
- LOG (GNUNET_ERROR_TYPE_DEBUG, " prebuilt message\n");;
+ case GNUNET_MESSAGE_TYPE_MESH_KEEPALIVE:
+ case GNUNET_MESSAGE_TYPE_MESH_KX:
+ case GNUNET_MESSAGE_TYPE_MESH_ENCRYPTED:
+ case GNUNET_MESSAGE_TYPE_MESH_ACK:
+ case GNUNET_MESSAGE_TYPE_MESH_POLL:
GNUNET_free_non_null (queue->cls);
break;
default:
GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_ERROR, " type %s unknown!\n",
- GNUNET_MESH_DEBUG_M2S (queue->type));
+ LOG (GNUNET_ERROR_TYPE_ERROR, "# type %s unknown!\n",
+ GM_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)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, " Q_N- %p %u\n", fc, fc->queue_n);
- fc->queue_n--;
peer->queue_n--;
}
- if (NULL != queue->c)
+
+ if (NULL != queue->callback)
{
- queue->c->pending_messages--;
- if (NULL != queue->c->t)
- {
- queue->c->t->pending_messages--;
- }
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "# Calling callback\n");
+ queue->callback (queue->callback_cls,
+ queue->c, queue->type,
+ queue->fwd, queue->size,
+ GNUNET_TIME_absolute_get_duration (queue->start_waiting));
}
GNUNET_free (queue);
/**
* @brief Queue and pass message to core when possible.
*
+ * @param peer Peer towards which to queue the message.
* @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 c Connection this message belongs to (can be NULL).
* @param fwd Is this a message going root->dest? (FWD ACK are NOT FWD!)
- * @param callback Function to be called once CORE has taken the message.
- * @param callback_cls Closure for @c callback.
+ * @param cont Continuation to be called once CORE has taken the message.
+ * @param cont_cls Closure for @c cont.
+ *
+ * @return Handle to cancel the message before it is sent. Once cont is called
+ * message has been sent and therefore the handle is no longer valid.
*/
-void
-GMP_queue_add (void *cls, uint16_t type, size_t size,
- struct MeshConnection *c,
- struct MeshChannel *ch,
- int fwd,
- GMP_sent callback, void *callback_cls)
+struct MeshPeerQueue *
+GMP_queue_add (struct MeshPeer *peer, void *cls, uint16_t type, size_t size,
+ struct MeshConnection *c, int fwd,
+ GMP_sent cont, void *cont_cls)
{
struct MeshPeerQueue *queue;
- struct MeshFlowControl *fc;
- struct MeshPeer *peer;
int priority;
int call_core;
- 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;
- }
+ LOG (GNUNET_ERROR_TYPE_INFO,
+ "queue add %s %s towards %s (size %u) on c %p (%s)\n",
+ GM_f2s (fwd), GM_m2s (type), GMP_2s(peer),
+ size, c, GMC_2s (c));
if (NULL == peer->connections)
{
/* We are not connected to this peer, ignore request. */
- GNUNET_break_op (0);
- return;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "WARNING %s not a neighbor\n", GMP_2s (peer));
+ GNUNET_STATISTICS_update (stats, "# messages dropped due to wrong hop", 1,
+ GNUNET_NO);
+ return NULL;
}
priority = 0;
}
LOG (GNUNET_ERROR_TYPE_DEBUG, "priority %d\n", priority);
- 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);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "queue full: %u/%u\n",
- fc->queue_n, fc->queue_max);
- return; /* Drop this message */
- }
- LOG (GNUNET_ERROR_TYPE_DEBUG, "last pid %u\n", fc->last_pid_sent);
- 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)
- {
- 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));
+ call_core = NULL == c ? GNUNET_YES : GMC_is_sendable (c, fwd);
+ queue = GNUNET_new (struct MeshPeerQueue);
queue->cls = cls;
queue->type = type;
queue->size = size;
queue->peer = peer;
queue->c = c;
- queue->ch = ch;
queue->fwd = fwd;
- queue->callback = callback;
- queue->callback_cls = callback_cls;
- if (100 <= priority)
+ queue->callback = cont;
+ queue->callback_cls = cont_cls;
+ 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 */
- GMP_queue_destroy (copy, GNUNET_YES);
- }
- }
- GNUNET_CONTAINER_DLL_insert (peer->queue_head, peer->queue_tail, queue);
+ GNUNET_CONTAINER_DLL_insert_tail (peer->queue_head, peer->queue_tail, queue);
+ peer->queue_n++;
}
else
{
- GNUNET_CONTAINER_DLL_insert_tail (peer->queue_head, peer->queue_tail, queue);
- LOG (GNUNET_ERROR_TYPE_DEBUG, " Q_N+ %p %u\n", fc, fc->queue_n);
- fc->queue_n++;
- peer->queue_n++;
+ GNUNET_CONTAINER_DLL_insert (peer->queue_head, peer->queue_tail, queue);
+ call_core = GNUNET_YES;
}
if (NULL == peer->core_transmit && GNUNET_YES == call_core)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"calling core tmt rdy towards %s for %u bytes\n",
- peer2s (peer), size);
+ GMP_2s (peer), size);
peer->core_transmit =
GNUNET_CORE_notify_transmit_ready (core_handle,
- 0,
- 0,
+ GNUNET_NO, get_priority (queue),
GNUNET_TIME_UNIT_FOREVER_REL,
GNUNET_PEER_resolve2 (peer->id),
size,
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
"core tmt rdy towards %s already called\n",
- peer2s (peer));
+ GMP_2s (peer));
}
- c->pending_messages++;
- if (NULL != c->t)
- c->t->pending_messages++;
+ return queue;
}
* Cancel all queued messages to a peer that belong to a certain connection.
*
* @param peer Peer towards whom to cancel.
- * @param c Connection whose queued messages to cancel.
+ * @param c Connection whose queued messages to cancel. Might be destroyed by
+ * the sent continuation call.
*/
void
GMP_queue_cancel (struct MeshPeer *peer, struct MeshConnection *c)
{
struct MeshPeerQueue *q;
struct MeshPeerQueue *next;
+ struct MeshPeerQueue *prev;
for (q = peer->queue_head; NULL != q; q = next)
{
- next = q->next;
+ prev = q->prev;
if (q->c == c)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "connection_cancel_queue %s\n",
- GNUNET_MESH_DEBUG_M2S (q->type));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "GMP_cancel_queue %s\n", GM_m2s (q->type));
GMP_queue_destroy (q, GNUNET_YES);
+
+ /* Get next from prev, q->next might be already freed:
+ * queue destroy -> callback -> GMC_destroy -> cancel_queues -> here
+ */
+ if (NULL == prev)
+ next = peer->queue_head;
+ else
+ next = prev->next;
+ }
+ else
+ {
+ next = q->next;
}
}
if (NULL == peer->queue_head)
}
+/**
+ * Get the first transmittable message for a connection.
+ *
+ * @param peer Neighboring peer.
+ * @param c Connection.
+ *
+ * @return First transmittable message.
+ */
+static struct MeshPeerQueue *
+connection_get_first_message (struct MeshPeer *peer, struct MeshConnection *c)
+{
+ struct MeshPeerQueue *q;
+
+ for (q = peer->queue_head; NULL != q; q = q->next)
+ {
+ if (q->c != c)
+ continue;
+ if (queue_is_sendable (q))
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " sendable!!\n");
+ return q;
+ }
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " not sendable\n");
+ }
+
+ return NULL;
+}
+
+
+void
+GMP_queue_unlock (struct MeshPeer *peer, struct MeshConnection *c)
+{
+ struct MeshPeerQueue *q;
+ size_t size;
+
+ if (NULL != peer->core_transmit)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " already unlocked!\n");
+ return; /* Already unlocked */
+ }
+
+ q = connection_get_first_message (peer, c);
+ if (NULL == q)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " queue empty!\n");
+ return; /* Nothing to transmit */
+ }
+
+ size = q->size;
+ peer->core_transmit =
+ GNUNET_CORE_notify_transmit_ready (core_handle,
+ GNUNET_NO, get_priority (q),
+ GNUNET_TIME_UNIT_FOREVER_REL,
+ GNUNET_PEER_resolve2 (peer->id),
+ size,
+ &queue_send,
+ peer);
+}
+
+
/**
* Initialize the peer subsystem.
*
* @param c Configuration.
- * @param id Peer identity
*/
void
-GMP_init (const struct GNUNET_CONFIGURATION_Handle *c,
- const struct GNUNET_PeerIdentity *id)
+GMP_init (const struct GNUNET_CONFIGURATION_Handle *c)
{
- my_full_id = id;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "init\n");
peers = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_NO);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_number (c, "MESH", "MAX_PEERS",
&max_peers))
{
- LOG_config_invalid (GNUNET_ERROR_TYPE_WARNING,
+ GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_WARNING,
"MESH", "MAX_PEERS", "USING DEFAULT");
max_peers = 1000;
}
NULL, /* Don't notify about all outbound messages */
GNUNET_NO, /* For header-only out notification */
core_handlers); /* Register these handlers */
- if (NULL == core_handle)
+ transport_handle = GNUNET_TRANSPORT_connect (c, &my_full_id,
+ NULL, /* cls */
+ NULL, NULL, NULL); /* Notify callbacks */
+
+ if (NULL == core_handle || NULL == transport_handle)
{
GNUNET_break (0);
GNUNET_SCHEDULER_shutdown ();
return;
}
+
}
/**
GNUNET_CORE_disconnect (core_handle);
core_handle = NULL;
}
+ if (transport_handle != NULL)
+ {
+ GNUNET_TRANSPORT_disconnect (transport_handle);
+ transport_handle = NULL;
+ }
+ GNUNET_PEER_change_rc (myid, -1);
+}
+
+/**
+ * Retrieve the MeshPeer stucture associated with the peer, create one
+ * and insert it in the appropriate structures if the peer is not known yet.
+ *
+ * @param peer_id Full identity of the peer.
+ *
+ * @return Existing or newly created peer structure.
+ */
+struct MeshPeer *
+GMP_get (const struct GNUNET_PeerIdentity *peer_id)
+{
+ struct MeshPeer *peer;
+
+ peer = GNUNET_CONTAINER_multipeermap_get (peers, peer_id);
+ if (NULL == peer)
+ {
+ peer = GNUNET_new (struct MeshPeer);
+ if (GNUNET_CONTAINER_multipeermap_size (peers) > max_peers)
+ {
+ peer_delete_oldest ();
+ }
+ GNUNET_CONTAINER_multipeermap_put (peers, peer_id, peer,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+ peer->id = GNUNET_PEER_intern (peer_id);
+ }
+ peer->last_contact = GNUNET_TIME_absolute_get();
+
+ return peer;
}
/**
- * Try to establish a new connection to this peer in the given tunnel.
+ * Retrieve the MeshPeer stucture associated with the peer, create one
+ * and insert it in the appropriate structures if the peer is not known yet.
+ *
+ * @param peer Short identity of the peer.
+ *
+ * @return Existing or newly created peer structure.
+ */
+struct MeshPeer *
+GMP_get_short (const GNUNET_PEER_Id peer)
+{
+ return GMP_get (GNUNET_PEER_resolve2 (peer));
+}
+
+
+/**
+ * Try to connect to a peer on transport level.
+ *
+ * @param cls Closure (peer).
+ * @param tc TaskContext.
+ */
+static void
+try_connect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct MeshPeer *peer = cls;
+
+ if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
+ return;
+
+ GNUNET_TRANSPORT_try_connect (transport_handle,
+ GNUNET_PEER_resolve2 (peer->id), NULL, NULL);
+}
+
+/**
+ * Try to establish a new connection to this peer (in its tunnel).
* If the peer doesn't have any path to it yet, try to get one.
* If the peer already has some path, send a CREATE CONNECTION towards it.
*
- * @param peer PeerInfo of the peer.
+ * @param peer Peer to connect to.
*/
void
GMP_connect (struct MeshPeer *peer)
{
- struct MeshTunnel2 *t;
+ struct MeshTunnel3 *t;
struct MeshPeerPath *p;
struct MeshConnection *c;
+ struct GNUNET_HELLO_Message *hello;
int rerun_search;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "peer_connect towards %s\n",
- peer2s (peer));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "peer_connect towards %s\n", GMP_2s (peer));
+
+ /* If we have a current hello, try to connect using it. */
+ hello = GMP_get_hello (peer);
+ if (NULL != hello)
+ {
+ struct GNUNET_MessageHeader *mh;
+
+ mh = GNUNET_HELLO_get_header (hello);
+ GNUNET_TRANSPORT_offer_hello (transport_handle, mh, try_connect, peer);
+ }
+
t = peer->tunnel;
c = NULL;
rerun_search = GNUNET_NO;
if (NULL != peer->path_head)
{
- LOG (GNUNET_ERROR_TYPE_DEBUG, "path exists\n");
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " some path exists\n");
p = peer_get_best_path (peer);
if (NULL != p)
{
LOG (GNUNET_ERROR_TYPE_DEBUG, " %u hops\n", p->length);
- c = tunnel_use_path (t, p);
+ c = GMT_use_path (t, p);
if (NULL == c)
{
/* This case can happen when the path includes a first hop that is
* path.
*
* Re-running the DHT GET should give core time to callback.
+ *
+ * GMT_use_path -> GMC_new -> register_neighbors takes care of
+ * updating statistics about this issue.
*/
- GNUNET_break(0);
- rerun_search = GNUNET_YES;
+ rerun_search = GNUNET_YES;
}
else
{
- send_connection_create (c);
+ GMC_send_create (c);
return;
}
}
+ else
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " but is NULL, all paths are in use\n");
+ }
}
if (NULL != peer->search_h && GNUNET_YES == rerun_search)
{
GMD_search_stop (peer->search_h);
peer->search_h = NULL;
- LOG (GNUNET_ERROR_TYPE_DEBUG,
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
" Stopping DHT GET for peer %s\n",
GMP_2s (peer));
}
id = GNUNET_PEER_resolve2 (peer->id);
LOG (GNUNET_ERROR_TYPE_DEBUG,
- " Starting DHT GET for peer %s\n", peer2s (peer));
+ " Starting DHT GET for peer %s\n", GMP_2s (peer));
peer->search_h = GMD_search (id, &search_handler, peer);
- if (MESH_TUNNEL3_NEW == t->state)
- GMT_change_state (t, MESH_TUNNEL3_SEARCHING);
+ if (MESH_TUNNEL3_NEW == GMT_get_cstate (t))
+ GMT_change_cstate (t, MESH_TUNNEL3_SEARCHING);
}
}
-/**
- * Set tunnel.
- *
- * @param peer Peer.
- * @param t Tunnel.
- */
-void
-GMP_set_tunnel (struct MeshPeer *peer, struct MeshTunnel2 *t)
-{
- peer->tunnel = t;
-}
-
-
/**
* Chech whether there is a direct (core level) connection to peer.
*
* @param peer Peer to check.
*
- * @return GNUNET_YES if there is a direct connection.
+ * @return #GNUNET_YES if there is a direct connection.
*/
int
GMP_is_neighbor (const struct MeshPeer *peer)
return GNUNET_YES;
}
- GNUNET_break (0); /* Is not a neighbor but connections is not NULL */
+ /* Is not a neighbor but connections is not NULL, probably disconnecting */
return GNUNET_NO;
}
+/**
+ * Create and initialize a new tunnel towards a peer, in case it has none.
+ * In case the peer already has a tunnel, nothing is done.
+ *
+ * Does not generate any traffic, just creates the local data structures.
+ *
+ * @param peer Peer towards which to create the tunnel.
+ */
+void
+GMP_add_tunnel (struct MeshPeer *peer)
+{
+ if (NULL != peer->tunnel)
+ return;
+ peer->tunnel = GMT_new (peer);
+}
+
+
/**
* Add a connection to a neighboring peer.
*
*/
int
GMP_add_connection (struct MeshPeer *peer,
- const struct MeshConnection *c)
+ struct MeshConnection *c)
{
+ int result;
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "adding connection %s\n", GMC_2s (c));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "to peer %s\n", GMP_2s (peer));
+
if (NULL == peer->connections)
{
GNUNET_break (0);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer %s is not a neighbor!\n",
+ GMP_2s (peer));
return GNUNET_SYSERR;
}
- return GNUNET_CONTAINER_multihashmap_put (peer->connections,
- GMC_get_id (c),
- c,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "peer %s ok, has %u connections.\n",
+ GMP_2s (peer), GNUNET_CONTAINER_multihashmap_size (peer->connections));
+ result = GNUNET_CONTAINER_multihashmap_put (peer->connections,
+ GMC_get_id (c),
+ c,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ " now has %u connections.\n",
+ GNUNET_CONTAINER_multihashmap_size (peer->connections));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "result %u\n", result);
+
+ return result;
+}
+
+
+/**
+ * Add the path to the peer and update the path used to reach it in case this
+ * is the shortest.
+ *
+ * @param peer Destination peer to add the path to.
+ * @param path New path to add. Last peer must be the peer in arg 1.
+ * Path will be either used of freed if already known.
+ * @param trusted Do we trust that this path is real?
+ *
+ * @return path if path was taken, pointer to existing duplicate if exists
+ * NULL on error.
+ */
+struct MeshPeerPath *
+GMP_add_path (struct MeshPeer *peer, struct MeshPeerPath *path,
+ int trusted)
+{
+ struct MeshPeerPath *aux;
+ unsigned int l;
+ unsigned int l2;
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "adding path [%u] to peer %s\n",
+ path->length, GMP_2s (peer));
+
+ if ((NULL == peer) || (NULL == path))
+ {
+ GNUNET_break (0);
+ path_destroy (path);
+ return NULL;
+ }
+ if (path->peers[path->length - 1] != peer->id)
+ {
+ GNUNET_break (0);
+ path_destroy (path);
+ return NULL;
+ }
+ if (2 >= path->length && GNUNET_NO == trusted)
+ {
+ /* Only allow CORE to tell us about direct paths */
+ path_destroy (path);
+ return NULL;
+ }
+ for (l = 1; l < path->length; l++)
+ {
+ if (path->peers[l] == myid)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "shortening path by %u\n", l);
+ for (l2 = 0; l2 < path->length - l; l2++)
+ {
+ path->peers[l2] = path->peers[l + l2];
+ }
+ path->length -= l;
+ l = 1;
+ path->peers = GNUNET_realloc (path->peers,
+ path->length * sizeof (GNUNET_PEER_Id));
+ }
+ }
+
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "adding path [%u]\n", path->length);
+
+ l = path_get_length (path);
+ if (0 == l)
+ {
+ path_destroy (path);
+ return NULL;
+ }
+
+ GNUNET_assert (peer->id == path->peers[path->length - 1]);
+ for (aux = peer->path_head; aux != NULL; aux = aux->next)
+ {
+ l2 = path_get_length (aux);
+ if (l2 > l)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " added\n");
+ GNUNET_CONTAINER_DLL_insert_before (peer->path_head,
+ peer->path_tail, aux, path);
+ return path;
+ }
+ else
+ {
+ if (l2 == l && memcmp (path->peers, aux->peers, l) == 0)
+ {
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " already known\n");
+ path_destroy (path);
+ return aux;
+ }
+ }
+ }
+ GNUNET_CONTAINER_DLL_insert_tail (peer->path_head, peer->path_tail,
+ path);
+ LOG (GNUNET_ERROR_TYPE_DEBUG, " added last\n");
+ return path;
+}
+
+
+/**
+ * Add the path to the origin peer and update the path used to reach it in case
+ * this is the shortest.
+ * The path is given in peer_info -> destination, therefore we turn the path
+ * upside down first.
+ *
+ * @param peer Peer to add the path to, being the origin of the path.
+ * @param path New path to add after being inversed.
+ * Path will be either used or freed.
+ * @param trusted Do we trust that this path is real?
+ *
+ * @return path if path was taken, pointer to existing duplicate if exists
+ * NULL on error.
+ */
+struct MeshPeerPath *
+GMP_add_path_to_origin (struct MeshPeer *peer,
+ struct MeshPeerPath *path,
+ int trusted)
+{
+ if (NULL == path)
+ return NULL;
+ path_invert (path);
+ return GMP_add_path (peer, path, trusted);
+}
+
+
+/**
+ * Adds a path to the info of all the peers in the path
+ *
+ * @param p Path to process.
+ * @param confirmed Whether we know if the path works or not.
+ */
+void
+GMP_add_path_to_all (const 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 = GMP_get_short (p->peers[i]);
+ copy = path_duplicate (p);
+ copy->length = i + 1;
+ GMP_add_path (aux, copy, p->length < 3 ? GNUNET_NO : confirmed);
+ }
+}
+
+
+/**
+ * Remove any path to the peer that has the extact same peers as the one given.
+ *
+ * @param peer Peer to remove the path from.
+ * @param path Path to remove. Is always destroyed .
+ */
+void
+GMP_remove_path (struct MeshPeer *peer, struct MeshPeerPath *path)
+{
+ struct MeshPeerPath *iter;
+ struct MeshPeerPath *next;
+
+ GNUNET_assert (myid == path->peers[0]);
+ GNUNET_assert (peer->id == path->peers[path->length - 1]);
+
+ for (iter = peer->path_head; NULL != iter; iter = next)
+ {
+ next = iter->next;
+ if (0 == memcmp (path->peers, iter->peers,
+ sizeof (GNUNET_PEER_Id) * path->length))
+ {
+ GNUNET_CONTAINER_DLL_remove (peer->path_head, peer->path_tail, iter);
+ path_destroy (iter);
+ if (path == iter)
+ return;
+ }
+ }
+ path_destroy (path);
}
GMP_remove_connection (struct MeshPeer *peer,
const struct MeshConnection *c)
{
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "removing connection %s\n", GMC_2s (c));
+ LOG (GNUNET_ERROR_TYPE_DEBUG, "from peer %s\n", GMP_2s (peer));
+
if (NULL == peer || NULL == peer->connections)
{
- GNUNET_break (0);
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "Peer %s is not a neighbor!\n",
+ GMP_2s (peer));
return GNUNET_SYSERR;
}
+ LOG (GNUNET_ERROR_TYPE_DEBUG,
+ "peer %s ok, has %u connections.\n",
+ GMP_2s (peer), GNUNET_CONTAINER_multihashmap_size (peer->connections));
+
return GNUNET_CONTAINER_multihashmap_remove (peer->connections,
GMC_get_id (c),
c);
}
+/**
+ * Start the DHT search for new paths towards the peer: we don't have
+ * enough good connections.
+ *
+ * @param peer Destination peer.
+ */
+void
+GMP_start_search (struct MeshPeer *peer)
+{
+ if (NULL != peer->search_h)
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ peer->search_h = GMD_search (GMP_get_id (peer), &search_handler, peer);
+}
+
+
+/**
+ * Stop the DHT search for new paths towards the peer: we already have
+ * enough good connections.
+ *
+ * @param peer Destination peer.
+ */
+void
+GMP_stop_search (struct MeshPeer *peer)
+{
+ if (NULL == peer->search_h)
+ {
+ GNUNET_break (0);
+ return;
+ }
+
+ GMD_search_stop (peer->search_h);
+ peer->search_h = NULL;
+}
+
+
/**
* Get the Full ID of a peer.
*
*
* @return Full ID of peer.
*/
-struct GNUNET_PeerIdentity *
+const struct GNUNET_PeerIdentity *
GMP_get_id (const struct MeshPeer *peer)
{
return GNUNET_PEER_resolve2 (peer->id);
}
+/**
+ * Set tunnel.
+ *
+ * @param peer Peer.
+ * @param t Tunnel.
+ */
+void
+GMP_set_tunnel (struct MeshPeer *peer, struct MeshTunnel3 *t)
+{
+ peer->tunnel = t;
+}
+
+
+/**
+ * Get the tunnel towards a peer.
+ *
+ * @param peer Peer to get from.
+ *
+ * @return Tunnel towards peer.
+ */
+struct MeshTunnel3 *
+GMP_get_tunnel (const struct MeshPeer *peer)
+{
+ return peer->tunnel;
+}
+
+
+/**
+ * Set the hello message.
+ *
+ * @param peer Peer whose message to set.
+ * @param hello Hello message.
+ */
+void
+GMP_set_hello (struct MeshPeer *peer, const struct GNUNET_HELLO_Message *hello)
+{
+ struct GNUNET_HELLO_Message *old;
+ size_t size;
+
+ old = GMP_get_hello (peer);
+ if (NULL == old)
+ {
+ size = GNUNET_HELLO_size (hello);
+ peer->hello = GNUNET_malloc (size);
+ memcpy (peer->hello, hello, size);
+ return;
+ }
+ else
+ {
+ peer->hello = GNUNET_HELLO_merge (old, hello);
+ GNUNET_free (old);
+ }
+}
+
+
+/**
+ * Get the hello message.
+ *
+ * @param peer Peer whose message to get.
+ *
+ * @return Hello message.
+ */
+struct GNUNET_HELLO_Message *
+GMP_get_hello (struct MeshPeer *peer)
+{
+ struct GNUNET_TIME_Absolute expiration;
+ struct GNUNET_TIME_Relative remaining;
+
+ if (NULL == peer->hello)
+ return NULL;
+
+ expiration = GNUNET_HELLO_get_last_expiration (peer->hello);
+ remaining = GNUNET_TIME_absolute_get_remaining (expiration);
+ if (0 == remaining.rel_value_us)
+ {
+ GNUNET_free (peer->hello);
+ peer->hello = NULL;
+ }
+ return peer->hello;
+}
+
+
+/**
+ * Count the number of known paths toward the peer.
+ *
+ * @param peer Peer to get path info.
+ *
+ * @return Number of known paths.
+ */
+unsigned int
+GMP_count_paths (const struct MeshPeer *peer)
+{
+ struct MeshPeerPath *iter;
+ unsigned int i;
+
+ for (iter = peer->path_head, i = 0; NULL != iter; iter = iter->next)
+ i++;
+
+ return i;
+}
+
+
+/**
+ * Iterate all known peers.
+ *
+ * @param iter Iterator.
+ * @param cls Closure for @c iter.
+ */
+void
+GMP_iterate_all (GNUNET_CONTAINER_PeerMapIterator iter, void *cls)
+{
+ GNUNET_CONTAINER_multipeermap_iterate (peers, iter, cls);
+}
+
+
/**
* Get the static string for a peer ID.
*
if (NULL == peer)
return "(NULL)";
return GNUNET_i2s (GNUNET_PEER_resolve2 (peer->id));
-}
\ No newline at end of file
+}
projects / oweals / gnunet.git / blobdiff