/*
This file is part of GNUnet.
- (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009-2015 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
*/
/**
* @author Christian Grothoff
* @author Nathan Evans
*/
-
#include "platform.h"
-#include "gnunet_block_lib.h"
#include "gnunet_util_lib.h"
+#include "gnunet_block_lib.h"
#include "gnunet_hello_lib.h"
#include "gnunet_constants.h"
#include "gnunet_protocols.h"
#include "gnunet_nse_service.h"
+#include "gnunet_ats_service.h"
#include "gnunet_core_service.h"
#include "gnunet_datacache_lib.h"
#include "gnunet_transport_service.h"
#include "gnunet-service-dht_neighbours.h"
#include "gnunet-service-dht_nse.h"
#include "gnunet-service-dht_routing.h"
-#include <fenv.h>
#include "dht.h"
+#define LOG_TRAFFIC(kind,...) GNUNET_log_from (kind, "dht-traffic",__VA_ARGS__)
+
/**
* How many buckets will we allow total.
*/
-#define MAX_BUCKETS sizeof (GNUNET_HashCode) * 8
+#define MAX_BUCKETS sizeof (struct GNUNET_HashCode) * 8
/**
* What is the maximum number of peers in a given bucket.
*/
-#define DEFAULT_BUCKET_SIZE 4
+#define DEFAULT_BUCKET_SIZE 8
/**
* Desired replication level for FIND PEER requests
*/
#define MAXIMUM_REPLICATION_LEVEL 16
+/**
+ * Maximum allowed number of pending messages per peer.
+ */
+#define MAXIMUM_PENDING_PER_PEER 64
+
/**
* How often to update our preference levels for peers in our routing tables.
*/
/**
* How long at least to wait before sending another find peer request.
*/
-#define DHT_MINIMUM_FIND_PEER_INTERVAL GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 2)
+#define DHT_MINIMUM_FIND_PEER_INTERVAL GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30)
/**
* How long at most to wait before sending another find peer request.
*/
-#define DHT_MAXIMUM_FIND_PEER_INTERVAL GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 8)
+#define DHT_MAXIMUM_FIND_PEER_INTERVAL GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 10)
/**
* How long at most to wait for transmission of a GET request to another peer?
*/
#define GET_TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 2)
+/**
+ * Hello address expiration
+ */
+extern struct GNUNET_TIME_Relative hello_expiration;
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
/**
* P2P PUT message
struct PeerPutMessage
{
/**
- * Type: GNUNET_MESSAGE_TYPE_DHT_P2P_PUT
+ * Type: #GNUNET_MESSAGE_TYPE_DHT_P2P_PUT
*/
struct GNUNET_MessageHeader header;
/**
* The key we are storing under.
*/
- GNUNET_HashCode key;
+ struct GNUNET_HashCode key;
/* put path (if tracked) */
struct PeerResultMessage
{
/**
- * Type: GNUNET_MESSAGE_TYPE_DHT_P2P_RESULT
+ * Type: #GNUNET_MESSAGE_TYPE_DHT_P2P_RESULT
*/
struct GNUNET_MessageHeader header;
/**
* The key of the corresponding GET request.
*/
- GNUNET_HashCode key;
+ struct GNUNET_HashCode key;
/* put path (if tracked) */
struct PeerGetMessage
{
/**
- * Type: GNUNET_MESSAGE_TYPE_DHT_P2P_GET
+ * Type: #GNUNET_MESSAGE_TYPE_DHT_P2P_GET
*/
struct GNUNET_MessageHeader header;
/**
* The key we are looking for.
*/
- GNUNET_HashCode key;
+ struct GNUNET_HashCode key;
/* xquery */
/* result bloomfilter */
};
-
+GNUNET_NETWORK_STRUCT_END
/**
* Linked list of messages to send to a particular other peer.
/**
* Actual message to be sent, allocated at the end of the struct:
- * // msg = (cast) &pm[1];
+ * // msg = (cast) &pm[1];
* // memcpy (&pm[1], data, len);
*/
const struct GNUNET_MessageHeader *msg;
struct PeerInfo *prev;
/**
- * Count of outstanding messages for peer. FIXME: NEEDED?
- * FIXME: bound queue size!?
+ * Count of outstanding messages for peer.
*/
unsigned int pending_count;
*/
struct GNUNET_CORE_TransmitHandle *th;
- /**
- * Preference update context
- */
- struct GNUNET_CORE_InformationRequestContext *info_ctx;
-
/**
* Task for scheduling preference updates
*/
- GNUNET_SCHEDULER_TaskIdentifier preference_task;
+ struct GNUNET_SCHEDULER_Task *preference_task;
/**
* What is the identity of the peer?
};
+/**
+ * Do we cache all results that we are routing in the local datacache?
+ */
+static int cache_results;
+
+/**
+ * Should routing details be logged to stderr (for debugging)?
+ */
+static int log_route_details_stderr;
+
/**
* The lowest currently used bucket, initially 0 (for 0-bits matching bucket).
*/
static unsigned int newly_found_peers;
/**
- * The buckets. Array of size MAX_BUCKET_SIZE. Offset 0 means 0 bits matching.
+ * Option for testing that disables the 'connect' function of the DHT.
+ */
+static int disable_try_connect;
+
+/**
+ * The buckets. Array of size #MAX_BUCKETS. Offset 0 means 0 bits matching.
*/
static struct PeerBucket k_buckets[MAX_BUCKETS];
/**
- * Hash map of all known peers, for easy removal from k_buckets on disconnect.
+ * Hash map of all CORE-connected peers, for easy removal from
+ * #k_buckets on disconnect.
*/
-static struct GNUNET_CONTAINER_MultiHashMap *all_known_peers;
+static struct GNUNET_CONTAINER_MultiPeerMap *all_connected_peers;
/**
* Maximum size for each bucket.
/**
* Task that sends FIND PEER requests.
*/
-static GNUNET_SCHEDULER_TaskIdentifier find_peer_task;
+static struct GNUNET_SCHEDULER_Task *find_peer_task;
/**
* Identity of this peer.
- */
+ */
static struct GNUNET_PeerIdentity my_identity;
/**
- * Handle to GNUnet core.
+ * Hash of the identity of this peer.
*/
-static struct GNUNET_CORE_Handle *coreAPI;
+static struct GNUNET_HashCode my_identity_hash;
+
+/**
+ * Handle to CORE.
+ */
+static struct GNUNET_CORE_Handle *core_api;
+
+/**
+ * Handle to ATS performance monitoring.
+ */
+static struct GNUNET_ATS_PerformanceHandle *ats_perf;
+
+/**
+ * Handle to ATS connectivity.
+ */
+static struct GNUNET_ATS_ConnectivityHandle *ats_ch;
+
/**
* on error (same hashcode)
*/
static int
-find_bucket (const GNUNET_HashCode * hc)
+find_bucket (const struct GNUNET_HashCode *hc)
{
unsigned int bits;
- bits = GNUNET_CRYPTO_hash_matching_bits (&my_identity.hashPubKey, hc);
+ bits = GNUNET_CRYPTO_hash_matching_bits (&my_identity_hash, hc);
if (bits == MAX_BUCKETS)
- {
- /* How can all bits match? Got my own ID? */
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
+ {
+ /* How can all bits match? Got my own ID? */
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
return MAX_BUCKETS - bits - 1;
}
/**
* Let GNUnet core know that we like the given peer.
*
- * @param cls the 'struct PeerInfo' of the peer
+ * @param cls the `struct PeerInfo` of the peer
* @param tc scheduler context.
- */
-static void
-update_core_preference (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
-
-
-/**
- * Function called with statistics about the given peer.
- *
- * @param cls closure
- * @param peer identifies the peer
- * @param bpm_out set to the current bandwidth limit (sending) for this peer
- * @param amount set to the amount that was actually reserved or unreserved;
- * either the full requested amount or zero (no partial reservations)
- * @param res_delay if the reservation could not be satisfied (amount was 0), how
- * long should the client wait until re-trying?
- * @param preference current traffic preference for the given peer
*/
static void
-update_core_preference_finish (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- struct GNUNET_BANDWIDTH_Value32NBO bpm_out,
- int32_t amount,
- struct GNUNET_TIME_Relative res_delay,
- uint64_t preference)
-{
- struct PeerInfo *peer_info = cls;
-
- peer_info->info_ctx = NULL;
- peer_info->preference_task
- = GNUNET_SCHEDULER_add_delayed (DHT_DEFAULT_PREFERENCE_INTERVAL,
- &update_core_preference, peer_info);
-}
-
-
-/**
- * Let GNUnet core know that we like the given peer.
- *
- * @param cls the 'struct PeerInfo' of the peer
- * @param tc scheduler context.
- */
-static void
update_core_preference (void *cls,
const struct GNUNET_SCHEDULER_TaskContext *tc)
{
uint64_t preference;
unsigned int matching;
int bucket;
+ struct GNUNET_HashCode phash;
- peer->preference_task = GNUNET_SCHEDULER_NO_TASK;
+ peer->preference_task = NULL;
if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
- return;
+ return;
+ GNUNET_CRYPTO_hash (&peer->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
matching =
- GNUNET_CRYPTO_hash_matching_bits (&my_identity.hashPubKey,
- &peer->id.hashPubKey);
+ GNUNET_CRYPTO_hash_matching_bits (&my_identity_hash,
+ &phash);
if (matching >= 64)
matching = 63;
- bucket = find_bucket (&peer->id.hashPubKey);
+ bucket = find_bucket (&phash);
if (bucket == GNUNET_SYSERR)
preference = 0;
else
+ {
+ GNUNET_assert (k_buckets[bucket].peers_size != 0);
preference = (1LL << matching) / k_buckets[bucket].peers_size;
+ }
if (preference == 0)
- {
- peer->preference_task
- = GNUNET_SCHEDULER_add_delayed (DHT_DEFAULT_PREFERENCE_INTERVAL,
- &update_core_preference, peer);
- return;
- }
+ {
+ peer->preference_task =
+ GNUNET_SCHEDULER_add_delayed (DHT_DEFAULT_PREFERENCE_INTERVAL,
+ &update_core_preference, peer);
+ return;
+ }
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Preference updates given to core"), 1,
- GNUNET_NO);
- peer->info_ctx =
- GNUNET_CORE_peer_change_preference (coreAPI, &peer->id,
- GNUNET_TIME_UNIT_FOREVER_REL,
- GNUNET_BANDWIDTH_VALUE_MAX, 0,
- preference,
- &update_core_preference_finish, peer);
+ gettext_noop ("# Preference updates given to core"),
+ 1, GNUNET_NO);
+ GNUNET_ATS_performance_change_preference (ats_perf,
+ &peer->id,
+ GNUNET_ATS_PREFERENCE_BANDWIDTH,
+ (double) preference,
+ GNUNET_ATS_PREFERENCE_END);
+ peer->preference_task =
+ GNUNET_SCHEDULER_add_delayed (DHT_DEFAULT_PREFERENCE_INTERVAL,
+ &update_core_preference, peer);
+
+
}
* @param cls the 'struct BloomConstructorContext'.
* @param key peer identity to add to the bloom filter
* @param value value the peer information (unused)
- * @return GNUNET_YES (we should continue to iterate)
+ * @return #GNUNET_YES (we should continue to iterate)
*/
static int
-add_known_to_bloom (void *cls, const GNUNET_HashCode * key, void *value)
+add_known_to_bloom (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
{
struct BloomConstructorContext *ctx = cls;
- GNUNET_HashCode mh;
-
- GNUNET_BLOCK_mingle_hash (key, ctx->bf_mutator, &mh);
+ struct GNUNET_HashCode key_hash;
+ struct GNUNET_HashCode mh;
+
+ GNUNET_CRYPTO_hash (key, sizeof (struct GNUNET_PeerIdentity), &key_hash);
+ GNUNET_BLOCK_mingle_hash (&key_hash, ctx->bf_mutator, &mh);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding known peer (%s) to bloomfilter for FIND PEER with mutation %u\n",
+ GNUNET_i2s (key), ctx->bf_mutator);
GNUNET_CONTAINER_bloomfilter_add (ctx->bloom, &mh);
return GNUNET_YES;
}
struct BloomConstructorContext bcc;
struct GNUNET_CONTAINER_BloomFilter *peer_bf;
- find_peer_task = GNUNET_SCHEDULER_NO_TASK;
+ find_peer_task = NULL;
if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
return;
- if (newly_found_peers > bucket_size)
+ if (newly_found_peers > bucket_size)
{
/* If we are finding many peers already, no need to send out our request right now! */
- find_peer_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MINUTES,
- &send_find_peer_message, NULL);
+ find_peer_task =
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_MINUTES,
+ &send_find_peer_message, NULL);
newly_found_peers = 0;
return;
}
- bcc.bf_mutator = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX);
+ bcc.bf_mutator =
+ GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX);
bcc.bloom =
- GNUNET_CONTAINER_bloomfilter_init (NULL, DHT_BLOOM_SIZE, GNUNET_CONSTANTS_BLOOMFILTER_K);
- GNUNET_CONTAINER_multihashmap_iterate (all_known_peers,
- &add_known_to_bloom,
+ GNUNET_CONTAINER_bloomfilter_init (NULL, DHT_BLOOM_SIZE,
+ GNUNET_CONSTANTS_BLOOMFILTER_K);
+ GNUNET_CONTAINER_multipeermap_iterate (all_connected_peers,
+ &add_known_to_bloom,
&bcc);
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# FIND PEER messages initiated"), 1,
- GNUNET_NO);
- peer_bf = GNUNET_CONTAINER_bloomfilter_init (NULL,
- DHT_BLOOM_SIZE,
- GNUNET_CONSTANTS_BLOOMFILTER_K);
+ gettext_noop ("# FIND PEER messages initiated"), 1,
+ GNUNET_NO);
+ peer_bf =
+ GNUNET_CONTAINER_bloomfilter_init (NULL, DHT_BLOOM_SIZE,
+ GNUNET_CONSTANTS_BLOOMFILTER_K);
// FIXME: pass priority!?
GDS_NEIGHBOURS_handle_get (GNUNET_BLOCK_TYPE_DHT_HELLO,
- GNUNET_DHT_RO_FIND_PEER,
- FIND_PEER_REPLICATION_LEVEL,
- 0,
- &my_identity.hashPubKey,
- NULL, 0,
- bcc.bloom, bcc.bf_mutator,
- peer_bf);
+ GNUNET_DHT_RO_FIND_PEER,
+ FIND_PEER_REPLICATION_LEVEL, 0,
+ &my_identity_hash, NULL, 0, bcc.bloom,
+ bcc.bf_mutator, peer_bf);
GNUNET_CONTAINER_bloomfilter_free (peer_bf);
GNUNET_CONTAINER_bloomfilter_free (bcc.bloom);
/* schedule next round */
+ next_send_time.rel_value_us =
+ DHT_MINIMUM_FIND_PEER_INTERVAL.rel_value_us +
+ GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
+ DHT_MAXIMUM_FIND_PEER_INTERVAL.rel_value_us /
+ (newly_found_peers + 1));
newly_found_peers = 0;
- next_send_time.rel_value =
- (DHT_MAXIMUM_FIND_PEER_INTERVAL.rel_value / 2) +
- GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
- DHT_MAXIMUM_FIND_PEER_INTERVAL.rel_value / 2);
- find_peer_task = GNUNET_SCHEDULER_add_delayed (next_send_time,
- &send_find_peer_message,
- NULL);
+ find_peer_task =
+ GNUNET_SCHEDULER_add_delayed (next_send_time, &send_find_peer_message,
+ NULL);
}
*
* @param cls closure
* @param peer peer identity this notification is about
- * @param atsi performance data
*/
static void
-handle_core_connect (void *cls, const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_TRANSPORT_ATS_Information *atsi)
+handle_core_connect (void *cls,
+ const struct GNUNET_PeerIdentity *peer)
{
struct PeerInfo *ret;
+ struct GNUNET_HashCode phash;
int peer_bucket;
/* Check for connect to self message */
if (0 == memcmp (&my_identity, peer, sizeof (struct GNUNET_PeerIdentity)))
return;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connected to %s\n",
+ GNUNET_i2s (peer));
if (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_contains (all_known_peers,
- &peer->hashPubKey))
+ GNUNET_CONTAINER_multipeermap_contains (all_connected_peers,
+ peer))
{
GNUNET_break (0);
return;
}
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peers connected"), 1,
- GNUNET_NO);
- peer_bucket = find_bucket (&peer->hashPubKey);
- GNUNET_assert ( (peer_bucket >= 0) && (peer_bucket < MAX_BUCKETS) );
- ret = GNUNET_malloc (sizeof (struct PeerInfo));
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# peers connected"), 1,
+ GNUNET_NO);
+ GNUNET_CRYPTO_hash (peer,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+ peer_bucket = find_bucket (&phash);
+ GNUNET_assert ((peer_bucket >= 0) && (peer_bucket < MAX_BUCKETS));
+ ret = GNUNET_new (struct PeerInfo);
#if 0
ret->latency = latency;
ret->distance = distance;
#endif
ret->id = *peer;
GNUNET_CONTAINER_DLL_insert_tail (k_buckets[peer_bucket].head,
- k_buckets[peer_bucket].tail, ret);
+ k_buckets[peer_bucket].tail,
+ ret);
k_buckets[peer_bucket].peers_size++;
- closest_bucket = GNUNET_MAX (closest_bucket,
- peer_bucket);
- if ( (peer_bucket > 0) &&
- (k_buckets[peer_bucket].peers_size <= bucket_size) )
- ret->preference_task = GNUNET_SCHEDULER_add_now (&update_core_preference, ret);
- newly_found_peers++;
+ closest_bucket = GNUNET_MAX (closest_bucket, peer_bucket);
+ if ((peer_bucket > 0) && (k_buckets[peer_bucket].peers_size <= bucket_size))
+ {
+ ret->preference_task =
+ GNUNET_SCHEDULER_add_now (&update_core_preference, ret);
+ newly_found_peers++;
+ }
GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multihashmap_put (all_known_peers,
- &peer->hashPubKey, ret,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- if (1 == GNUNET_CONTAINER_multihashmap_size (all_known_peers))
+ GNUNET_CONTAINER_multipeermap_put (all_connected_peers,
+ peer,
+ ret,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+ if (1 == GNUNET_CONTAINER_multipeermap_size (all_connected_peers) &&
+ (GNUNET_YES != disable_try_connect))
{
/* got a first connection, good time to start with FIND PEER requests... */
find_peer_task = GNUNET_SCHEDULER_add_now (&send_find_peer_message,
- NULL);
+ NULL);
}
}
* @param peer peer identity this notification is about
*/
static void
-handle_core_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
+handle_core_disconnect (void *cls,
+ const struct GNUNET_PeerIdentity *peer)
{
struct PeerInfo *to_remove;
int current_bucket;
struct P2PPendingMessage *pos;
+ unsigned int discarded;
+ struct GNUNET_HashCode phash;
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- "Peer `%s' disconnected!\n",
- GNUNET_i2s (peer));
/* Check for disconnect from self message */
if (0 == memcmp (&my_identity, peer, sizeof (struct GNUNET_PeerIdentity)))
return;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Disconnected %s\n",
+ GNUNET_i2s (peer));
to_remove =
- GNUNET_CONTAINER_multihashmap_get (all_known_peers, &peer->hashPubKey);
+ GNUNET_CONTAINER_multipeermap_get (all_connected_peers,
+ peer);
if (NULL == to_remove)
- {
- GNUNET_break (0);
- return;
- }
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peers connected"), -1,
- GNUNET_NO);
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (all_known_peers,
- &peer->hashPubKey,
- to_remove));
- if (NULL != to_remove->info_ctx)
{
- GNUNET_CORE_peer_change_preference_cancel (to_remove->info_ctx);
- to_remove->info_ctx = NULL;
+ GNUNET_break (0);
+ return;
}
- if (GNUNET_SCHEDULER_NO_TASK != to_remove->preference_task)
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# peers connected"), -1,
+ GNUNET_NO);
+ GNUNET_assert (GNUNET_YES ==
+ GNUNET_CONTAINER_multipeermap_remove (all_connected_peers,
+ peer,
+ to_remove));
+ if (NULL != to_remove->preference_task)
{
GNUNET_SCHEDULER_cancel (to_remove->preference_task);
- to_remove->preference_task = GNUNET_SCHEDULER_NO_TASK;
+ to_remove->preference_task = NULL;
}
- current_bucket = find_bucket (&to_remove->id.hashPubKey);
+ GNUNET_CRYPTO_hash (peer,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+ current_bucket = find_bucket (&phash);
+ GNUNET_assert (current_bucket >= 0);
GNUNET_CONTAINER_DLL_remove (k_buckets[current_bucket].head,
- k_buckets[current_bucket].tail,
- to_remove);
+ k_buckets[current_bucket].tail, to_remove);
GNUNET_assert (k_buckets[current_bucket].peers_size > 0);
k_buckets[current_bucket].peers_size--;
- while ( (closest_bucket > 0) &&
- (k_buckets[closest_bucket].peers_size == 0) )
+ while ((closest_bucket > 0) && (k_buckets[closest_bucket].peers_size == 0))
closest_bucket--;
- if (to_remove->th != NULL)
+ if (to_remove->th != NULL)
{
GNUNET_CORE_notify_transmit_ready_cancel (to_remove->th);
to_remove->th = NULL;
}
+ discarded = 0;
while (NULL != (pos = to_remove->head))
{
- GNUNET_CONTAINER_DLL_remove (to_remove->head,
- to_remove->tail,
- pos);
+ GNUNET_CONTAINER_DLL_remove (to_remove->head, to_remove->tail, pos);
+ discarded++;
GNUNET_free (pos);
}
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Queued messages discarded (peer disconnected)"),
+ discarded, GNUNET_NO);
+ GNUNET_free (to_remove);
}
size_t msize;
peer->th = NULL;
- if (buf == NULL)
+ while ((NULL != (pending = peer->head)) &&
+ (0 == GNUNET_TIME_absolute_get_remaining (pending->timeout).rel_value_us))
{
- /* client disconnected */
- return 0;
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Messages dropped (CORE timeout)"),
+ 1,
+ GNUNET_NO);
+ peer->pending_count--;
+ GNUNET_CONTAINER_DLL_remove (peer->head, peer->tail, pending);
+ GNUNET_free (pending);
}
- if (peer->head == NULL)
+ if (NULL == pending)
{
/* no messages pending */
return 0;
}
+ if (NULL == buf)
+ {
+ peer->th =
+ GNUNET_CORE_notify_transmit_ready (core_api, GNUNET_NO,
+ GNUNET_CORE_PRIO_BEST_EFFORT,
+ GNUNET_TIME_absolute_get_remaining
+ (pending->timeout), &peer->id,
+ ntohs (pending->msg->size),
+ &core_transmit_notify, peer);
+ GNUNET_break (NULL != peer->th);
+ return 0;
+ }
off = 0;
- while ( (NULL != (pending = peer->head)) &&
- (size - off >= (msize = ntohs (pending->msg->size))) )
+ while ((NULL != (pending = peer->head)) &&
+ (size - off >= (msize = ntohs (pending->msg->size))))
{
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Bytes transmitted to other peers"), msize,
- GNUNET_NO);
+ gettext_noop
+ ("# Bytes transmitted to other peers"), msize,
+ GNUNET_NO);
memcpy (&cbuf[off], pending->msg, msize);
off += msize;
peer->pending_count--;
- GNUNET_CONTAINER_DLL_remove (peer->head, peer->tail, pending);
+ GNUNET_CONTAINER_DLL_remove (peer->head,
+ peer->tail,
+ pending);
GNUNET_free (pending);
}
- if (peer->head != NULL)
- {
- peer->th
- = GNUNET_CORE_notify_transmit_ready (coreAPI, GNUNET_YES,
- pending->importance,
- GNUNET_TIME_absolute_get_remaining (pending->timeout),
- &peer->id, msize,
- &core_transmit_notify, peer);
- }
+ if (NULL != (pending = peer->head))
+ {
+ /* technically redundant, but easier to read and
+ avoids bogus gcc warning... */
+ msize = ntohs (pending->msg->size);
+ peer->th =
+ GNUNET_CORE_notify_transmit_ready (core_api,
+ GNUNET_NO,
+ GNUNET_CORE_PRIO_BEST_EFFORT,
+ GNUNET_TIME_absolute_get_remaining (pending->timeout),
+ &peer->id,
+ msize,
+ &core_transmit_notify,
+ peer);
+ GNUNET_break (NULL != peer->th);
+ }
return off;
}
if (NULL != peer->th)
return;
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Bytes of bandwdith requested from core"),
- ntohs (pending->msg->size),
- GNUNET_NO);
- peer->th
- = GNUNET_CORE_notify_transmit_ready (coreAPI, GNUNET_YES,
- pending->importance,
- GNUNET_TIME_absolute_get_remaining (pending->timeout),
- &peer->id,
- ntohs (pending->msg->size),
- &core_transmit_notify, peer);
+ gettext_noop
+ ("# Bytes of bandwidth requested from core"),
+ ntohs (pending->msg->size), GNUNET_NO);
+ peer->th =
+ GNUNET_CORE_notify_transmit_ready (core_api, GNUNET_NO,
+ GNUNET_CORE_PRIO_BEST_EFFORT,
+ GNUNET_TIME_absolute_get_remaining
+ (pending->timeout), &peer->id,
+ ntohs (pending->msg->size),
+ &core_transmit_notify, peer);
+ GNUNET_break (NULL != peer->th);
}
* @return Some number of peers to forward the message to
*/
static unsigned int
-get_forward_count (uint32_t hop_count,
- uint32_t target_replication)
+get_forward_count (uint32_t hop_count, uint32_t target_replication)
{
uint32_t random_value;
uint32_t forward_count;
if (hop_count > GDS_NSE_get () * 4.0)
{
/* forcefully terminate */
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# requests TTL-dropped"),
+ 1, GNUNET_NO);
return 0;
}
if (hop_count > GDS_NSE_get () * 2.0)
return 1;
}
/* bound by system-wide maximum */
- target_replication = GNUNET_MIN (MAXIMUM_REPLICATION_LEVEL,
- target_replication);
+ target_replication =
+ GNUNET_MIN (MAXIMUM_REPLICATION_LEVEL, target_replication);
target_value =
- 1 + (target_replication - 1.0) / (GDS_NSE_get () +
- ((float) (target_replication - 1.0) *
- hop_count));
+ 1 + (target_replication - 1.0) / (GDS_NSE_get () +
+ ((float) (target_replication - 1.0) *
+ hop_count));
/* Set forward count to floor of target_value */
forward_count = (uint32_t) target_value;
/* Subtract forward_count (floor) from target_value (yields value between 0 and 1) */
target_value = target_value - forward_count;
random_value =
- GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX);
+ GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, UINT32_MAX);
if (random_value < (target_value * UINT32_MAX))
forward_count++;
return forward_count;
* Differences in the lower bits must count stronger than differences
* in the higher bits.
*
+ * @param target
+ * @param have
* @return 0 if have==target, otherwise a number
* that is larger as the distance between
* the two hash codes increases
*/
static unsigned int
-get_distance (const GNUNET_HashCode * target, const GNUNET_HashCode * have)
+get_distance (const struct GNUNET_HashCode *target,
+ const struct GNUNET_HashCode *have)
{
unsigned int bucket;
unsigned int msb;
* mismatching bit at 'bucket' */
lsb = 0;
for (i = bucket + 1;
- (i < sizeof (GNUNET_HashCode) * 8) && (i < bucket + 1 + 32 - 9); i++)
+ (i < sizeof (struct GNUNET_HashCode) * 8) && (i < bucket + 1 + 32 - 9); i++)
{
if (GNUNET_CRYPTO_hash_get_bit (target, i) !=
GNUNET_CRYPTO_hash_get_bit (have, i))
*
* @param key hash code to check closeness to
* @param bloom bloomfilter, exclude these entries from the decision
- * @return GNUNET_YES if node location is closest,
- * GNUNET_NO otherwise.
+ * @return #GNUNET_YES if node location is closest,
+ * #GNUNET_NO otherwise.
*/
static int
-am_closest_peer (const GNUNET_HashCode *key,
+am_closest_peer (const struct GNUNET_HashCode *key,
const struct GNUNET_CONTAINER_BloomFilter *bloom)
{
int bits;
int bucket_num;
int count;
struct PeerInfo *pos;
+ struct GNUNET_HashCode phash;
- if (0 == memcmp (&my_identity.hashPubKey, key, sizeof (GNUNET_HashCode)))
+ if (0 == memcmp (&my_identity_hash, key, sizeof (struct GNUNET_HashCode)))
return GNUNET_YES;
bucket_num = find_bucket (key);
- bits = GNUNET_CRYPTO_hash_matching_bits (&my_identity.hashPubKey, key);
+ GNUNET_assert (bucket_num >= 0);
+ bits = GNUNET_CRYPTO_hash_matching_bits (&my_identity_hash, key);
pos = k_buckets[bucket_num].head;
count = 0;
while ((pos != NULL) && (count < bucket_size))
{
+ GNUNET_CRYPTO_hash (&pos->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
if ((bloom != NULL) &&
(GNUNET_YES ==
- GNUNET_CONTAINER_bloomfilter_test (bloom, &pos->id.hashPubKey)))
+ GNUNET_CONTAINER_bloomfilter_test (bloom, &phash)))
{
pos = pos->next;
continue; /* Skip already checked entries */
}
- other_bits = GNUNET_CRYPTO_hash_matching_bits (&pos->id.hashPubKey, key);
+ other_bits = GNUNET_CRYPTO_hash_matching_bits (&phash, key);
if (other_bits > bits)
return GNUNET_NO;
- if (other_bits == bits) /* We match the same number of bits */
+ if (other_bits == bits) /* We match the same number of bits */
return GNUNET_YES;
pos = pos->next;
}
* exponentially declining probability.
*
* FIXME: double-check that this is fine
- *
+ *
*
* @param key the key we are selecting a peer to route to
* @param bloom a bloomfilter containing entries this request has seen already
* @return Peer to route to, or NULL on error
*/
static struct PeerInfo *
-select_peer (const GNUNET_HashCode *key,
- const struct GNUNET_CONTAINER_BloomFilter *bloom,
- uint32_t hops)
+select_peer (const struct GNUNET_HashCode * key,
+ const struct GNUNET_CONTAINER_BloomFilter *bloom, uint32_t hops)
{
unsigned int bc;
unsigned int count;
unsigned int dist;
unsigned int smallest_distance;
struct PeerInfo *chosen;
+ struct GNUNET_HashCode phash;
if (hops >= GDS_NSE_get ())
{
/* greedy selection (closest peer that is not in bloomfilter) */
smallest_distance = UINT_MAX;
chosen = NULL;
- for (bc = closest_bucket; bc < MAX_BUCKETS; bc++)
+ for (bc = 0; bc <= closest_bucket; bc++)
{
pos = k_buckets[bc].head;
count = 0;
while ((pos != NULL) && (count < bucket_size))
{
- if (GNUNET_NO ==
- GNUNET_CONTAINER_bloomfilter_test (bloom, &pos->id.hashPubKey))
+ GNUNET_CRYPTO_hash (&pos->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+ if ((bloom == NULL) ||
+ (GNUNET_NO ==
+ GNUNET_CONTAINER_bloomfilter_test (bloom, &phash)))
{
- dist = get_distance (key, &pos->id.hashPubKey);
+ dist = get_distance (key, &phash);
if (dist < smallest_distance)
{
chosen = pos;
}
else
{
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peers excluded from routing due to Bloomfilter"), 1,
- GNUNET_NO);
- }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Excluded peer `%s' due to BF match in greedy routing for %s\n",
+ GNUNET_i2s (&pos->id), GNUNET_h2s (key));
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Peers excluded from routing due to Bloomfilter"),
+ 1, GNUNET_NO);
+ dist = get_distance (key, &phash);
+ if (dist < smallest_distance)
+ {
+ chosen = NULL;
+ smallest_distance = dist;
+ }
+ }
count++;
pos = pos->next;
}
}
if (NULL == chosen)
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peer selection failed"), 1,
- GNUNET_NO);
+ gettext_noop ("# Peer selection failed"), 1,
+ GNUNET_NO);
return chosen;
}
/* select "random" peer */
/* count number of peers that are available and not filtered */
count = 0;
- for (bc = closest_bucket; bc < MAX_BUCKETS; bc++)
+ for (bc = 0; bc <= closest_bucket; bc++)
{
pos = k_buckets[bc].head;
while ((pos != NULL) && (count < bucket_size))
{
- if ( (bloom != NULL) &&
- (GNUNET_YES ==
- GNUNET_CONTAINER_bloomfilter_test (bloom, &pos->id.hashPubKey)) )
+ GNUNET_CRYPTO_hash (&pos->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+ if ((bloom != NULL) &&
+ (GNUNET_YES ==
+ GNUNET_CONTAINER_bloomfilter_test (bloom, &phash)))
{
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peers excluded from routing due to Bloomfilter"), 1,
- GNUNET_NO);
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop
+ ("# Peers excluded from routing due to Bloomfilter"),
+ 1, GNUNET_NO);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Excluded peer `%s' due to BF match in random routing for %s\n",
+ GNUNET_i2s (&pos->id), GNUNET_h2s (key));
pos = pos->next;
continue; /* Ignore bloomfiltered peers */
}
pos = pos->next;
}
}
- if (count == 0) /* No peers to select from! */
+ if (0 == count) /* No peers to select from! */
{
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peer selection failed"), 1,
- GNUNET_NO);
+ gettext_noop ("# Peer selection failed"), 1,
+ GNUNET_NO);
return NULL;
}
/* Now actually choose a peer */
selected = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, count);
count = 0;
- for (bc = closest_bucket; bc < MAX_BUCKETS; bc++)
+ for (bc = 0; bc <= closest_bucket; bc++)
{
- pos = k_buckets[bc].head;
- while ((pos != NULL) && (count < bucket_size))
+ for (pos = k_buckets[bc].head; ((pos != NULL) && (count < bucket_size)); pos = pos->next)
{
- if ( (bloom != NULL) &&
- (GNUNET_YES ==
- GNUNET_CONTAINER_bloomfilter_test (bloom, &pos->id.hashPubKey)) )
+ GNUNET_CRYPTO_hash (&pos->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+ if ((bloom != NULL) &&
+ (GNUNET_YES ==
+ GNUNET_CONTAINER_bloomfilter_test (bloom, &phash)))
{
- pos = pos->next;
continue; /* Ignore bloomfiltered peers */
}
if (0 == selected--)
return pos;
- pos = pos->next;
}
}
GNUNET_break (0);
* @return number of peers returned in 'targets'.
*/
static unsigned int
-get_target_peers (const GNUNET_HashCode *key,
- struct GNUNET_CONTAINER_BloomFilter *bloom,
- uint32_t hop_count,
- uint32_t target_replication,
- struct PeerInfo ***targets)
+get_target_peers (const struct GNUNET_HashCode *key,
+ struct GNUNET_CONTAINER_BloomFilter *bloom,
+ uint32_t hop_count, uint32_t target_replication,
+ struct PeerInfo ***targets)
{
unsigned int ret;
unsigned int off;
struct PeerInfo **rtargets;
struct PeerInfo *nxt;
+ struct GNUNET_HashCode nhash;
GNUNET_assert (NULL != bloom);
ret = get_forward_count (hop_count, target_replication);
- if (ret == 0)
+ if (0 == ret)
{
*targets = NULL;
return 0;
}
- rtargets = GNUNET_malloc (sizeof (struct PeerInfo*) * ret);
- off = 0;
- while (ret-- > 0)
+ rtargets = GNUNET_malloc (sizeof (struct PeerInfo *) * ret);
+ for (off = 0; off < ret; off++)
{
nxt = select_peer (key, bloom, hop_count);
- if (nxt == NULL)
- break;
- rtargets[off++] = nxt;
+ if (NULL == nxt)
+ break;
+ rtargets[off] = nxt;
+ GNUNET_CRYPTO_hash (&nxt->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &nhash);
GNUNET_break (GNUNET_NO ==
- GNUNET_CONTAINER_bloomfilter_test (bloom, &nxt->id.hashPubKey));
- GNUNET_CONTAINER_bloomfilter_add (bloom, &nxt->id.hashPubKey);
+ GNUNET_CONTAINER_bloomfilter_test (bloom,
+ &nhash));
+ GNUNET_CONTAINER_bloomfilter_add (bloom, &nhash);
}
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Selected %u/%u peers at hop %u for %s (target was %u)\n",
+ off,
+ GNUNET_CONTAINER_multipeermap_size (all_connected_peers),
+ (unsigned int) hop_count,
+ GNUNET_h2s (key),
+ ret);
if (0 == off)
{
GNUNET_free (rtargets);
return 0;
}
*targets = rtargets;
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Forwarding query `%s' to %u peers (goal was %u peers)\n",
+ GNUNET_h2s (key),
+ off,
+ ret);
return off;
}
* @param hop_count how many hops has this message traversed so far
* @param bf Bloom filter of peers this PUT has already traversed
* @param key key for the content
- * @param put_path_length number of entries in put_path
+ * @param put_path_length number of entries in @a put_path
* @param put_path peers this request has traversed so far (if tracked)
* @param data payload to store
- * @param data_size number of bytes in data
+ * @param data_size number of bytes in @a data
+ * @return #GNUNET_OK if the request was forwarded, #GNUNET_NO if not
*/
-void
+int
GDS_NEIGHBOURS_handle_put (enum GNUNET_BLOCK_Type type,
- enum GNUNET_DHT_RouteOption options,
- uint32_t desired_replication_level,
- struct GNUNET_TIME_Absolute expiration_time,
- uint32_t hop_count,
- struct GNUNET_CONTAINER_BloomFilter *bf,
- const GNUNET_HashCode *key,
- unsigned int put_path_length,
- struct GNUNET_PeerIdentity *put_path,
- const void *data,
- size_t data_size)
+ enum GNUNET_DHT_RouteOption options,
+ uint32_t desired_replication_level,
+ struct GNUNET_TIME_Absolute expiration_time,
+ uint32_t hop_count,
+ struct GNUNET_CONTAINER_BloomFilter *bf,
+ const struct GNUNET_HashCode *key,
+ unsigned int put_path_length,
+ struct GNUNET_PeerIdentity *put_path,
+ const void *data, size_t data_size)
{
unsigned int target_count;
unsigned int i;
size_t msize;
struct PeerPutMessage *ppm;
struct GNUNET_PeerIdentity *pp;
-
+ struct GNUNET_HashCode thash;
+ unsigned int skip_count;
+
GNUNET_assert (NULL != bf);
- GNUNET_CONTAINER_bloomfilter_add (bf, &my_identity.hashPubKey);
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# PUT requests routed"), 1,
- GNUNET_NO);
- target_count = get_target_peers (key, bf, hop_count,
- desired_replication_level,
- &targets);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding myself (%s) to PUT bloomfilter for %s\n",
+ GNUNET_i2s (&my_identity), GNUNET_h2s (key));
+ GNUNET_CONTAINER_bloomfilter_add (bf, &my_identity_hash);
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# PUT requests routed"),
+ 1, GNUNET_NO);
+ target_count =
+ get_target_peers (key, bf, hop_count, desired_replication_level,
+ &targets);
if (0 == target_count)
- return;
- msize = put_path_length * sizeof (struct GNUNET_PeerIdentity) + data_size + sizeof (struct PeerPutMessage);
- if (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Routing PUT for %s terminates after %u hops at %s\n",
+ GNUNET_h2s (key), (unsigned int) hop_count,
+ GNUNET_i2s (&my_identity));
+ return GNUNET_NO;
+ }
+ msize =
+ put_path_length * sizeof (struct GNUNET_PeerIdentity) + data_size +
+ sizeof (struct PeerPutMessage);
+ if (msize >= GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE)
{
put_path_length = 0;
msize = data_size + sizeof (struct PeerPutMessage);
}
- if (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
+ if (msize >= GNUNET_CONSTANTS_MAX_ENCRYPTED_MESSAGE_SIZE)
{
GNUNET_break (0);
- return;
+ GNUNET_free (targets);
+ return GNUNET_NO;
}
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peers selected as targets for PUT requests"), target_count,
- GNUNET_NO);
- for (i=0;i<target_count;i++)
+ gettext_noop
+ ("# PUT messages queued for transmission"),
+ target_count, GNUNET_NO);
+ skip_count = 0;
+ for (i = 0; i < target_count; i++)
{
target = targets[i];
+ if (target->pending_count >= MAXIMUM_PENDING_PER_PEER)
+ {
+ /* skip */
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# P2P messages dropped due to full queue"),
+ 1, GNUNET_NO);
+ skip_count++;
+ continue;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Routing PUT for %s after %u hops to %s\n", GNUNET_h2s (key),
+ (unsigned int) hop_count, GNUNET_i2s (&target->id));
pending = GNUNET_malloc (sizeof (struct P2PPendingMessage) + msize);
- pending->importance = 0; /* FIXME */
- pending->timeout = expiration_time;
- ppm = (struct PeerPutMessage*) &pending[1];
+ pending->importance = 0; /* FIXME */
+ pending->timeout = expiration_time;
+ ppm = (struct PeerPutMessage *) &pending[1];
pending->msg = &ppm->header;
ppm->header.size = htons (msize);
ppm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_PUT);
ppm->desired_replication_level = htonl (desired_replication_level);
ppm->put_path_length = htonl (put_path_length);
ppm->expiration_time = GNUNET_TIME_absolute_hton (expiration_time);
- GNUNET_break (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (bf, &target->id.hashPubKey));
+ GNUNET_CRYPTO_hash (&target->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &thash);
+ GNUNET_break (GNUNET_YES ==
+ GNUNET_CONTAINER_bloomfilter_test (bf,
+ &thash));
GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_bloomfilter_get_raw_data (bf,
- ppm->bloomfilter,
- DHT_BLOOM_SIZE));
+ GNUNET_CONTAINER_bloomfilter_get_raw_data (bf,
+ ppm->bloomfilter,
+ DHT_BLOOM_SIZE));
ppm->key = *key;
- pp = (struct GNUNET_PeerIdentity*) &ppm[1];
- memcpy (pp, put_path, sizeof (struct GNUNET_PeerIdentity) * put_path_length);
+ pp = (struct GNUNET_PeerIdentity *) &ppm[1];
+ memcpy (pp, put_path,
+ sizeof (struct GNUNET_PeerIdentity) * put_path_length);
memcpy (&pp[put_path_length], data, data_size);
- GNUNET_CONTAINER_DLL_insert_tail (target->head,
- target->tail,
- pending);
+ GNUNET_CONTAINER_DLL_insert_tail (target->head, target->tail, pending);
target->pending_count++;
process_peer_queue (target);
}
GNUNET_free (targets);
+ return (skip_count < target_count) ? GNUNET_OK : GNUNET_NO;
}
* @param hop_count how many hops did this request traverse so far?
* @param key key for the content
* @param xquery extended query
- * @param xquery_size number of bytes in xquery
+ * @param xquery_size number of bytes in @a xquery
* @param reply_bf bloomfilter to filter duplicates
- * @param reply_bf_mutator mutator for reply_bf
+ * @param reply_bf_mutator mutator for @a reply_bf
* @param peer_bf filter for peers not to select (again)
+ * @return #GNUNET_OK if the request was forwarded, #GNUNET_NO if not
*/
-void
+int
GDS_NEIGHBOURS_handle_get (enum GNUNET_BLOCK_Type type,
- enum GNUNET_DHT_RouteOption options,
- uint32_t desired_replication_level,
- uint32_t hop_count,
- const GNUNET_HashCode *key,
- const void *xquery,
- size_t xquery_size,
- const struct GNUNET_CONTAINER_BloomFilter *reply_bf,
- uint32_t reply_bf_mutator,
- struct GNUNET_CONTAINER_BloomFilter *peer_bf)
+ enum GNUNET_DHT_RouteOption options,
+ uint32_t desired_replication_level,
+ uint32_t hop_count, const struct GNUNET_HashCode * key,
+ const void *xquery, size_t xquery_size,
+ const struct GNUNET_CONTAINER_BloomFilter *reply_bf,
+ uint32_t reply_bf_mutator,
+ struct GNUNET_CONTAINER_BloomFilter *peer_bf)
{
unsigned int target_count;
unsigned int i;
struct PeerGetMessage *pgm;
char *xq;
size_t reply_bf_size;
-
- GNUNET_assert (NULL != peer_bf);
- GNUNET_CONTAINER_bloomfilter_add (peer_bf, &my_identity.hashPubKey);
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# GET requests routed"), 1,
- GNUNET_NO);
- target_count = get_target_peers (key, peer_bf, hop_count,
- desired_replication_level,
- &targets);
+ struct GNUNET_HashCode thash;
+ unsigned int skip_count;
+
+ GNUNET_assert (NULL != peer_bf);
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# GET requests routed"),
+ 1, GNUNET_NO);
+ target_count =
+ get_target_peers (key, peer_bf, hop_count, desired_replication_level,
+ &targets);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Adding myself (%s) to GET bloomfilter for %s\n",
+ GNUNET_i2s (&my_identity), GNUNET_h2s (key));
+ GNUNET_CONTAINER_bloomfilter_add (peer_bf, &my_identity_hash);
if (0 == target_count)
- return;
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Routing GET for %s terminates after %u hops at %s\n",
+ GNUNET_h2s (key), (unsigned int) hop_count,
+ GNUNET_i2s (&my_identity));
+ return GNUNET_NO;
+ }
reply_bf_size = GNUNET_CONTAINER_bloomfilter_get_size (reply_bf);
msize = xquery_size + sizeof (struct PeerGetMessage) + reply_bf_size;
if (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
{
GNUNET_break (0);
- return;
+ GNUNET_free (targets);
+ return GNUNET_NO;
}
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Peers selected as targets for GET requests"), target_count,
- GNUNET_NO);
+ gettext_noop
+ ("# GET messages queued for transmission"),
+ target_count, GNUNET_NO);
/* forward request */
- for (i=0;i<target_count;i++)
+ skip_count = 0;
+ for (i = 0; i < target_count; i++)
{
target = targets[i];
- pending = GNUNET_malloc (sizeof (struct P2PPendingMessage) + msize);
- pending->importance = 0; /* FIXME */
+ if (target->pending_count >= MAXIMUM_PENDING_PER_PEER)
+ {
+ /* skip */
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# P2P messages dropped due to full queue"),
+ 1, GNUNET_NO);
+ skip_count++;
+ continue;
+ }
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Routing GET for %s after %u hops to %s\n", GNUNET_h2s (key),
+ (unsigned int) hop_count, GNUNET_i2s (&target->id));
+ pending = GNUNET_malloc (sizeof (struct P2PPendingMessage) + msize);
+ pending->importance = 0; /* FIXME */
pending->timeout = GNUNET_TIME_relative_to_absolute (GET_TIMEOUT);
- pgm = (struct PeerGetMessage*) &pending[1];
+ pgm = (struct PeerGetMessage *) &pending[1];
pending->msg = &pgm->header;
pgm->header.size = htons (msize);
pgm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_GET);
pgm->hop_count = htonl (hop_count + 1);
pgm->desired_replication_level = htonl (desired_replication_level);
pgm->xquery_size = htonl (xquery_size);
- pgm->bf_mutator = reply_bf_mutator;
- GNUNET_break (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (peer_bf, &target->id.hashPubKey));
+ pgm->bf_mutator = reply_bf_mutator;
+ GNUNET_CRYPTO_hash (&target->id,
+ sizeof (struct GNUNET_PeerIdentity),
+ &thash);
+ GNUNET_break (GNUNET_YES ==
+ GNUNET_CONTAINER_bloomfilter_test (peer_bf,
+ &thash));
GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_bloomfilter_get_raw_data (peer_bf,
- pgm->bloomfilter,
- DHT_BLOOM_SIZE));
+ GNUNET_CONTAINER_bloomfilter_get_raw_data (peer_bf,
+ pgm->bloomfilter,
+ DHT_BLOOM_SIZE));
pgm->key = *key;
xq = (char *) &pgm[1];
memcpy (xq, xquery, xquery_size);
if (NULL != reply_bf)
GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_bloomfilter_get_raw_data (reply_bf,
- &xq[xquery_size],
- reply_bf_size));
- GNUNET_CONTAINER_DLL_insert_tail (target->head,
- target->tail,
- pending);
+ GNUNET_CONTAINER_bloomfilter_get_raw_data (reply_bf,
+ &xq
+ [xquery_size],
+ reply_bf_size));
+ GNUNET_CONTAINER_DLL_insert_tail (target->head, target->tail, pending);
target->pending_count++;
process_peer_queue (target);
}
GNUNET_free (targets);
+ return (skip_count < target_count) ? GNUNET_OK : GNUNET_NO;
}
* @param type type of the block
* @param expiration_time when does the content expire
* @param key key for the content
- * @param put_path_length number of entries in put_path
+ * @param put_path_length number of entries in @a put_path
* @param put_path peers the original PUT traversed (if tracked)
- * @param get_path_length number of entries in put_path
+ * @param get_path_length number of entries in @a get_path
* @param get_path peers this reply has traversed so far (if tracked)
* @param data payload of the reply
- * @param data_size number of bytes in data
+ * @param data_size number of bytes in @a data
*/
void
GDS_NEIGHBOURS_handle_reply (const struct GNUNET_PeerIdentity *target,
- enum GNUNET_BLOCK_Type type,
- struct GNUNET_TIME_Absolute expiration_time,
- const GNUNET_HashCode *key,
- unsigned int put_path_length,
- const struct GNUNET_PeerIdentity *put_path,
- unsigned int get_path_length,
- const struct GNUNET_PeerIdentity *get_path,
- const void *data,
- size_t data_size)
+ enum GNUNET_BLOCK_Type type,
+ struct GNUNET_TIME_Absolute expiration_time,
+ const struct GNUNET_HashCode *key,
+ unsigned int put_path_length,
+ const struct GNUNET_PeerIdentity *put_path,
+ unsigned int get_path_length,
+ const struct GNUNET_PeerIdentity *get_path,
+ const void *data,
+ size_t data_size)
{
struct PeerInfo *pi;
struct P2PPendingMessage *pending;
size_t msize;
struct PeerResultMessage *prm;
struct GNUNET_PeerIdentity *paths;
-
- msize = data_size + sizeof (struct PeerResultMessage) +
- (get_path_length + put_path_length) * sizeof (struct GNUNET_PeerIdentity);
- if ( (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
- (get_path_length > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
- (put_path_length > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
- (data_size > GNUNET_SERVER_MAX_MESSAGE_SIZE) )
+
+ msize =
+ data_size + sizeof (struct PeerResultMessage) + (get_path_length +
+ put_path_length) *
+ sizeof (struct GNUNET_PeerIdentity);
+ if ((msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
+ (get_path_length >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
+ (put_path_length >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
+ (data_size > GNUNET_SERVER_MAX_MESSAGE_SIZE))
{
GNUNET_break (0);
return;
}
- pi = GNUNET_CONTAINER_multihashmap_get (all_known_peers,
- &target->hashPubKey);
+ pi = GNUNET_CONTAINER_multipeermap_get (all_connected_peers,
+ target);
if (NULL == pi)
{
/* peer disconnected in the meantime, drop reply */
return;
}
+ if (pi->pending_count >= MAXIMUM_PENDING_PER_PEER)
+ {
+ /* skip */
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# P2P messages dropped due to full queue"),
+ 1, GNUNET_NO);
+ return;
+ }
+
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# REPLIES routed"), 1,
- GNUNET_NO);
- pending = GNUNET_malloc (sizeof (struct P2PPendingMessage) + msize);
- pending->importance = 0; /* FIXME */
+ gettext_noop
+ ("# RESULT messages queued for transmission"), 1,
+ GNUNET_NO);
+ pending = GNUNET_malloc (sizeof (struct P2PPendingMessage) + msize);
+ pending->importance = 0; /* FIXME */
pending->timeout = expiration_time;
- prm = (struct PeerResultMessage*) &pending[1];
+ prm = (struct PeerResultMessage *) &pending[1];
pending->msg = &prm->header;
prm->header.size = htons (msize);
prm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_RESULT);
prm->get_path_length = htonl (get_path_length);
prm->expiration_time = GNUNET_TIME_absolute_hton (expiration_time);
prm->key = *key;
- paths = (struct GNUNET_PeerIdentity*) &prm[1];
- memcpy (paths, put_path, put_path_length * sizeof (struct GNUNET_PeerIdentity));
- memcpy (&paths[put_path_length],
- get_path, get_path_length * sizeof (struct GNUNET_PeerIdentity));
- memcpy (&paths[put_path_length + get_path_length],
- data, data_size);
- GNUNET_CONTAINER_DLL_insert (pi->head,
- pi->tail,
- pending);
+ paths = (struct GNUNET_PeerIdentity *) &prm[1];
+ memcpy (paths, put_path,
+ put_path_length * sizeof (struct GNUNET_PeerIdentity));
+ memcpy (&paths[put_path_length], get_path,
+ get_path_length * sizeof (struct GNUNET_PeerIdentity));
+ memcpy (&paths[put_path_length + get_path_length], data, data_size);
+ GNUNET_CONTAINER_DLL_insert (pi->head, pi->tail, pending);
pi->pending_count++;
process_peer_queue (pi);
}
* To be called on core init/fail.
*
* @param cls service closure
- * @param server handle to the server for this service
* @param identity the public identity of this peer
- * @param publicKey the public key of this peer
*/
static void
-core_init (void *cls, struct GNUNET_CORE_Handle *server,
- const struct GNUNET_PeerIdentity *identity,
- const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *publicKey)
+core_init (void *cls,
+ const struct GNUNET_PeerIdentity *identity)
{
- GNUNET_assert (server != NULL);
my_identity = *identity;
+ GNUNET_CRYPTO_hash (identity,
+ sizeof (struct GNUNET_PeerIdentity),
+ &my_identity_hash);
}
* @param peer sender of the request
* @param message message
* @param peer peer identity this notification is about
- * @param atsi performance data
- * @return GNUNET_OK to keep the connection open,
- * GNUNET_SYSERR to close it (signal serious error)
+ * @return #GNUNET_OK to keep the connection open,
+ * #GNUNET_SYSERR to close it (signal serious error)
*/
static int
-handle_dht_p2p_put (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_MessageHeader *message,
- const struct GNUNET_TRANSPORT_ATS_Information
- *atsi)
+handle_dht_p2p_put (void *cls, const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_MessageHeader *message)
{
const struct PeerPutMessage *put;
const struct GNUNET_PeerIdentity *put_path;
size_t payload_size;
enum GNUNET_DHT_RouteOption options;
struct GNUNET_CONTAINER_BloomFilter *bf;
- GNUNET_HashCode test_key;
-
+ struct GNUNET_HashCode test_key;
+ struct GNUNET_HashCode phash;
+ int forwarded;
+
msize = ntohs (message->size);
if (msize < sizeof (struct PeerPutMessage))
{
GNUNET_break_op (0);
return GNUNET_YES;
}
- put = (const struct PeerPutMessage*) message;
+ put = (const struct PeerPutMessage *) message;
putlen = ntohl (put->put_path_length);
- if ( (msize < sizeof (struct PeerPutMessage) + putlen * sizeof (struct GNUNET_PeerIdentity)) ||
- (putlen > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) )
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
+ if ((msize <
+ sizeof (struct PeerPutMessage) +
+ putlen * sizeof (struct GNUNET_PeerIdentity)) ||
+ (putlen >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)))
+ {
+ GNUNET_break_op (0);
+ return GNUNET_YES;
+ }
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# P2P PUT requests received"), 1,
+ GNUNET_NO);
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# P2P PUT requests received"), 1,
- GNUNET_NO);
- put_path = (const struct GNUNET_PeerIdentity*) &put[1];
+ gettext_noop ("# P2P PUT bytes received"), msize,
+ GNUNET_NO);
+ put_path = (const struct GNUNET_PeerIdentity *) &put[1];
payload = &put_path[putlen];
options = ntohl (put->options);
- payload_size = msize - (sizeof (struct PeerPutMessage) +
- putlen * sizeof (struct GNUNET_PeerIdentity));
- switch (GNUNET_BLOCK_get_key (GDS_block_context,
- ntohl (put->type),
- payload, payload_size,
- &test_key))
+ payload_size =
+ msize - (sizeof (struct PeerPutMessage) +
+ putlen * sizeof (struct GNUNET_PeerIdentity));
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "PUT for `%s' from %s\n",
+ GNUNET_h2s (&put->key), GNUNET_i2s (peer));
+ GNUNET_CRYPTO_hash (peer, sizeof (struct GNUNET_PeerIdentity), &phash);
+ if (GNUNET_YES == log_route_details_stderr)
+ {
+ char *tmp;
+
+ tmp = GNUNET_strdup (GNUNET_i2s (&my_identity));
+ LOG_TRAFFIC (GNUNET_ERROR_TYPE_DEBUG,
+ "R5N PUT %s: %s->%s (%u, %u=>%u)\n",
+ GNUNET_h2s (&put->key), GNUNET_i2s (peer), tmp,
+ ntohl(put->hop_count),
+ GNUNET_CRYPTO_hash_matching_bits (&phash, &put->key),
+ GNUNET_CRYPTO_hash_matching_bits (&my_identity_hash, &put->key)
+ );
+ GNUNET_free (tmp);
+ }
+ switch (GNUNET_BLOCK_get_key
+ (GDS_block_context, ntohl (put->type), payload, payload_size,
+ &test_key))
{
case GNUNET_YES:
- if (0 != memcmp (&test_key, &put->key, sizeof (GNUNET_HashCode)))
+ if (0 != memcmp (&test_key, &put->key, sizeof (struct GNUNET_HashCode)))
{
+ char *put_s = GNUNET_strdup (GNUNET_h2s_full (&put->key));
GNUNET_break_op (0);
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+ "PUT with key `%s' for block with key %s\n",
+ put_s, GNUNET_h2s_full (&test_key));
+ GNUNET_free (put_s);
return GNUNET_YES;
}
break;
/* cannot verify, good luck */
break;
}
- bf = GNUNET_CONTAINER_bloomfilter_init (put->bloomfilter,
- DHT_BLOOM_SIZE,
- GNUNET_CONSTANTS_BLOOMFILTER_K);
- GNUNET_break_op (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (bf, &peer->hashPubKey));
+ if (ntohl (put->type) == GNUNET_BLOCK_TYPE_REGEX) /* FIXME: do for all tpyes */
{
- struct GNUNET_PeerIdentity pp[putlen+1];
-
+ switch (GNUNET_BLOCK_evaluate (GDS_block_context,
+ ntohl (put->type),
+ GNUNET_BLOCK_EO_NONE,
+ NULL, /* query */
+ NULL, 0, /* bloom filer */
+ NULL, 0, /* xquery */
+ payload, payload_size))
+ {
+ case GNUNET_BLOCK_EVALUATION_OK_MORE:
+ case GNUNET_BLOCK_EVALUATION_OK_LAST:
+ break;
+
+ case GNUNET_BLOCK_EVALUATION_OK_DUPLICATE:
+ case GNUNET_BLOCK_EVALUATION_RESULT_INVALID:
+ case GNUNET_BLOCK_EVALUATION_RESULT_IRRELEVANT:
+ case GNUNET_BLOCK_EVALUATION_REQUEST_VALID:
+ case GNUNET_BLOCK_EVALUATION_REQUEST_INVALID:
+ case GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED:
+ default:
+ GNUNET_break_op (0);
+ return GNUNET_OK;
+ }
+ }
+
+ bf = GNUNET_CONTAINER_bloomfilter_init (put->bloomfilter, DHT_BLOOM_SIZE,
+ GNUNET_CONSTANTS_BLOOMFILTER_K);
+ GNUNET_break_op (GNUNET_YES ==
+ GNUNET_CONTAINER_bloomfilter_test (bf, &phash));
+ {
+ struct GNUNET_PeerIdentity pp[putlen + 1];
+
/* extend 'put path' by sender */
if (0 != (options & GNUNET_DHT_RO_RECORD_ROUTE))
{
}
else
putlen = 0;
-
+
/* give to local clients */
GDS_CLIENTS_handle_reply (GNUNET_TIME_absolute_ntoh (put->expiration_time),
- &put->key,
- 0, NULL,
- putlen,
- pp,
- ntohl (put->type),
- payload_size,
- payload);
+ &put->key, 0, NULL, putlen, pp, ntohl (put->type),
+ payload_size, payload);
/* store locally */
- if ( (0 != (options & GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE)) ||
- (am_closest_peer (&put->key,
- bf) ) )
- GDS_DATACACHE_handle_put (GNUNET_TIME_absolute_ntoh (put->expiration_time),
- &put->key,
- putlen, pp,
- ntohl (put->type),
- payload_size,
- payload);
+ if ((0 != (options & GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE)) ||
+ (am_closest_peer (&put->key, bf)))
+ GDS_DATACACHE_handle_put (GNUNET_TIME_absolute_ntoh
+ (put->expiration_time), &put->key, putlen, pp,
+ ntohl (put->type), payload_size, payload);
/* route to other peers */
- GDS_NEIGHBOURS_handle_put (ntohl (put->type),
- options,
- ntohl (put->desired_replication_level),
- GNUNET_TIME_absolute_ntoh (put->expiration_time),
- ntohl (put->hop_count) + 1 /* who adds +1? */,
- bf,
- &put->key,
- putlen, pp,
- payload,
- payload_size);
+ forwarded = GDS_NEIGHBOURS_handle_put (ntohl (put->type), options,
+ ntohl (put->desired_replication_level),
+ GNUNET_TIME_absolute_ntoh (put->expiration_time),
+ ntohl (put->hop_count), bf,
+ &put->key, putlen,
+ pp, payload, payload_size);
+ /* notify monitoring clients */
+ GDS_CLIENTS_process_put (options
+ | (GNUNET_OK == forwarded)
+ ? GNUNET_DHT_RO_LAST_HOP : 0,
+ ntohl (put->type),
+ ntohl (put->hop_count),
+ ntohl (put->desired_replication_level),
+ putlen, pp,
+ GNUNET_TIME_absolute_ntoh (put->expiration_time),
+ &put->key,
+ payload,
+ payload_size);
}
GNUNET_CONTAINER_bloomfilter_free (bf);
return GNUNET_YES;
*/
static void
handle_find_peer (const struct GNUNET_PeerIdentity *sender,
- const GNUNET_HashCode *key,
- struct GNUNET_CONTAINER_BloomFilter *bf,
- uint32_t bf_mutator)
+ const struct GNUNET_HashCode * key,
+ struct GNUNET_CONTAINER_BloomFilter *bf, uint32_t bf_mutator)
{
int bucket_idx;
struct PeerBucket *bucket;
struct PeerInfo *peer;
unsigned int choice;
- GNUNET_HashCode mhash;
+ struct GNUNET_HashCode phash;
+ struct GNUNET_HashCode mhash;
const struct GNUNET_HELLO_Message *hello;
/* first, check about our own HELLO */
if (NULL != GDS_my_hello)
{
- GNUNET_BLOCK_mingle_hash (&my_identity.hashPubKey, bf_mutator, &mhash);
- if ( (NULL == bf) ||
- (GNUNET_YES != GNUNET_CONTAINER_bloomfilter_test (bf, &mhash)) )
+ GNUNET_BLOCK_mingle_hash (&my_identity_hash, bf_mutator, &mhash);
+ if ((NULL == bf) ||
+ (GNUNET_YES != GNUNET_CONTAINER_bloomfilter_test (bf, &mhash)))
{
- GDS_NEIGHBOURS_handle_reply (sender,
- GNUNET_BLOCK_TYPE_DHT_HELLO,
- GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION),
- key,
- 0, NULL,
- 0, NULL,
- GDS_my_hello,
- GNUNET_HELLO_size ((const struct GNUNET_HELLO_Message*) GDS_my_hello));
+ GDS_NEIGHBOURS_handle_reply (sender, GNUNET_BLOCK_TYPE_DHT_HELLO,
+ GNUNET_TIME_relative_to_absolute
+ (hello_expiration),
+ key, 0, NULL, 0, NULL, GDS_my_hello,
+ GNUNET_HELLO_size ((const struct
+ GNUNET_HELLO_Message *)
+ GDS_my_hello));
}
else
{
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# FIND PEER requests ignored due to Bloomfilter"), 1,
- GNUNET_NO);
+ gettext_noop
+ ("# FIND PEER requests ignored due to Bloomfilter"),
+ 1, GNUNET_NO);
}
}
else
{
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# FIND PEER requests ignored due to lack of HELLO"), 1,
- GNUNET_NO);
+ gettext_noop
+ ("# FIND PEER requests ignored due to lack of HELLO"),
+ 1, GNUNET_NO);
}
/* then, also consider sending a random HELLO from the closest bucket */
- if (0 == memcmp (&my_identity.hashPubKey, key, sizeof (GNUNET_HashCode)))
+ if (0 == memcmp (&my_identity_hash, key, sizeof (struct GNUNET_HashCode)))
bucket_idx = closest_bucket;
else
bucket_idx = GNUNET_MIN (closest_bucket, find_bucket (key));
bucket = &k_buckets[bucket_idx];
if (bucket->peers_size == 0)
return;
- choice = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
- bucket->peers_size);
+ choice =
+ GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, bucket->peers_size);
peer = bucket->head;
while (choice > 0)
{
- GNUNET_assert (peer != NULL);
+ GNUNET_assert (NULL != peer);
peer = peer->next;
+ choice--;
}
choice = bucket->peers_size;
do
- {
- peer = peer->next;
- if (choice-- == 0)
- return; /* no non-masked peer available */
- if (peer == NULL)
- peer = bucket->head;
- GNUNET_BLOCK_mingle_hash (&peer->id.hashPubKey, bf_mutator, &mhash);
- hello = GDS_HELLO_get (&peer->id);
- }
- while ( (hello == NULL) ||
- (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (bf, &mhash)) );
- GDS_NEIGHBOURS_handle_reply (sender,
- GNUNET_BLOCK_TYPE_DHT_HELLO,
- GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION),
- key,
- 0, NULL,
- 0, NULL,
- hello,
- GNUNET_HELLO_size (hello));
+ {
+ peer = peer->next;
+ if (choice-- == 0)
+ return; /* no non-masked peer available */
+ if (peer == NULL)
+ peer = bucket->head;
+ GNUNET_CRYPTO_hash (&peer->id, sizeof (struct GNUNET_PeerIdentity), &phash);
+ GNUNET_BLOCK_mingle_hash (&phash, bf_mutator, &mhash);
+ hello = GDS_HELLO_get (&peer->id);
+ }
+ while ((hello == NULL) ||
+ (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (bf, &mhash)));
+ GDS_NEIGHBOURS_handle_reply (sender, GNUNET_BLOCK_TYPE_DHT_HELLO,
+ GNUNET_TIME_relative_to_absolute
+ (GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION), key,
+ 0, NULL, 0, NULL, hello,
+ GNUNET_HELLO_size (hello));
}
* @param cls closure
* @param peer sender of the request
* @param message message
- * @param peer peer identity this notification is about
- * @param atsi performance data
- * @return GNUNET_OK to keep the connection open,
- * GNUNET_SYSERR to close it (signal serious error)
+ * @return #GNUNET_OK to keep the connection open,
+ * #GNUNET_SYSERR to close it (signal serious error)
*/
static int
-handle_dht_p2p_get (void *cls, const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_MessageHeader *message,
- const struct GNUNET_TRANSPORT_ATS_Information
- *atsi)
+handle_dht_p2p_get (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_MessageHeader *message)
{
struct PeerGetMessage *get;
uint32_t xquery_size;
struct GNUNET_CONTAINER_BloomFilter *reply_bf;
struct GNUNET_CONTAINER_BloomFilter *peer_bf;
const char *xquery;
+ struct GNUNET_HashCode phash;
+ int forwarded;
- GNUNET_break (0 != memcmp (peer, &my_identity, sizeof (struct GNUNET_PeerIdentity)));
+ GNUNET_break (0 !=
+ memcmp (peer, &my_identity,
+ sizeof (struct GNUNET_PeerIdentity)));
/* parse and validate message */
msize = ntohs (message->size);
if (msize < sizeof (struct PeerGetMessage))
GNUNET_break_op (0);
return GNUNET_YES;
}
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# P2P GET requests received"), 1,
- GNUNET_NO);
reply_bf_size = msize - (sizeof (struct PeerGetMessage) + xquery_size);
type = ntohl (get->type);
options = ntohl (get->options);
- xquery = (const char*) &get[1];
+ xquery = (const char *) &get[1];
reply_bf = NULL;
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# P2P GET requests received"), 1,
+ GNUNET_NO);
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# P2P GET bytes received"), msize,
+ GNUNET_NO);
+ GNUNET_CRYPTO_hash (peer,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+ if (GNUNET_YES == log_route_details_stderr)
+ {
+ char *tmp;
+
+ tmp = GNUNET_strdup (GNUNET_i2s (&my_identity));
+ LOG_TRAFFIC (GNUNET_ERROR_TYPE_DEBUG,
+ "R5N GET %s: %s->%s (%u, %u=>%u) xq: %.*s\n",
+ GNUNET_h2s (&get->key), GNUNET_i2s (peer), tmp,
+ ntohl(get->hop_count),
+ GNUNET_CRYPTO_hash_matching_bits (&phash, &get->key),
+ GNUNET_CRYPTO_hash_matching_bits (&my_identity_hash, &get->key),
+ ntohl(get->xquery_size), xquery);
+ GNUNET_free (tmp);
+ }
+
if (reply_bf_size > 0)
- reply_bf = GNUNET_CONTAINER_bloomfilter_init (&xquery[xquery_size],
- reply_bf_size,
- GNUNET_CONSTANTS_BLOOMFILTER_K);
- eval = GNUNET_BLOCK_evaluate (GDS_block_context,
- type,
- &get->key,
- &reply_bf,
- get->bf_mutator,
- xquery, xquery_size,
- NULL, 0);
+ reply_bf =
+ GNUNET_CONTAINER_bloomfilter_init (&xquery[xquery_size], reply_bf_size,
+ GNUNET_CONSTANTS_BLOOMFILTER_K);
+ eval =
+ GNUNET_BLOCK_evaluate (GDS_block_context,
+ type,
+ GNUNET_BLOCK_EO_NONE,
+ &get->key,
+ &reply_bf,
+ get->bf_mutator,
+ xquery,
+ xquery_size,
+ NULL,
+ 0);
if (eval != GNUNET_BLOCK_EVALUATION_REQUEST_VALID)
{
/* request invalid or block type not supported */
return GNUNET_YES;
}
peer_bf =
- GNUNET_CONTAINER_bloomfilter_init (get->bloomfilter,
- DHT_BLOOM_SIZE,
- GNUNET_CONSTANTS_BLOOMFILTER_K);
- GNUNET_break_op (GNUNET_YES == GNUNET_CONTAINER_bloomfilter_test (peer_bf, &peer->hashPubKey));
+ GNUNET_CONTAINER_bloomfilter_init (get->bloomfilter, DHT_BLOOM_SIZE,
+ GNUNET_CONSTANTS_BLOOMFILTER_K);
+ GNUNET_break_op (GNUNET_YES ==
+ GNUNET_CONTAINER_bloomfilter_test (peer_bf,
+ &phash));
/* remember request for routing replies */
- GDS_ROUTING_add (peer,
- type,
- options,
- &get->key,
- xquery, xquery_size,
- reply_bf, get->bf_mutator);
-
+ GDS_ROUTING_add (peer, type, options, &get->key, xquery, xquery_size,
+ reply_bf, get->bf_mutator);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "GET for %s at %s after %u hops\n",
+ GNUNET_h2s (&get->key),
+ GNUNET_i2s (&my_identity),
+ (unsigned int) ntohl (get->hop_count));
/* local lookup (this may update the reply_bf) */
- if ( (0 != (options & GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE)) ||
- (am_closest_peer (&get->key,
- peer_bf) ) )
+ if ((0 != (options & GNUNET_DHT_RO_DEMULTIPLEX_EVERYWHERE)) ||
+ (am_closest_peer (&get->key, peer_bf)))
{
- if ( (0 != (options & GNUNET_DHT_RO_FIND_PEER)))
+ if ((0 != (options & GNUNET_DHT_RO_FIND_PEER)))
{
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# P2P FIND PEER requests processed"), 1,
- GNUNET_NO);
- handle_find_peer (peer,
- &get->key,
- reply_bf,
- get->bf_mutator);
+ gettext_noop
+ ("# P2P FIND PEER requests processed"), 1,
+ GNUNET_NO);
+ handle_find_peer (peer, &get->key, reply_bf, get->bf_mutator);
}
else
{
- eval = GDS_DATACACHE_handle_get (&get->key,
- type,
- xquery, xquery_size,
- &reply_bf,
- get->bf_mutator);
+ eval =
+ GDS_DATACACHE_handle_get (&get->key, type, xquery, xquery_size,
+ &reply_bf, get->bf_mutator);
}
}
else
{
GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# P2P GET requests ONLY routed"), 1,
- GNUNET_NO);
+ gettext_noop ("# P2P GET requests ONLY routed"),
+ 1, GNUNET_NO);
}
-
+
/* P2P forwarding */
+ forwarded = GNUNET_NO;
if (eval != GNUNET_BLOCK_EVALUATION_OK_LAST)
- GDS_NEIGHBOURS_handle_get (type,
- options,
- ntohl (get->desired_replication_level),
- ntohl (get->hop_count) + 1, /* CHECK: where (else) do we do +1? */
- &get->key,
- xquery, xquery_size,
- reply_bf,
- get->bf_mutator,
- peer_bf);
+ forwarded = GDS_NEIGHBOURS_handle_get (type, options,
+ ntohl (get->desired_replication_level),
+ ntohl (get->hop_count),
+ &get->key,
+ xquery,
+ xquery_size,
+ reply_bf,
+ get->bf_mutator, peer_bf);
+ GDS_CLIENTS_process_get (options
+ | (GNUNET_OK == forwarded)
+ ? GNUNET_DHT_RO_LAST_HOP : 0,
+ type,
+ ntohl (get->hop_count),
+ ntohl (get->desired_replication_level),
+ 0, NULL,
+ &get->key);
+
+
/* clean up */
if (NULL != reply_bf)
GNUNET_CONTAINER_bloomfilter_free (reply_bf);
- GNUNET_CONTAINER_bloomfilter_free (peer_bf);
+ GNUNET_CONTAINER_bloomfilter_free (peer_bf);
return GNUNET_YES;
}
* @param cls closure
* @param message message
* @param peer peer identity this notification is about
- * @param atsi performance data
- * @return GNUNET_YES (do not cut p2p connection)
+ * @return #GNUNET_YES (do not cut p2p connection)
*/
static int
-handle_dht_p2p_result (void *cls, const struct GNUNET_PeerIdentity *peer,
- const struct GNUNET_MessageHeader *message,
- const struct GNUNET_TRANSPORT_ATS_Information
- *atsi)
+handle_dht_p2p_result (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_MessageHeader *message)
{
const struct PeerResultMessage *prm;
const struct GNUNET_PeerIdentity *put_path;
uint16_t msize;
size_t data_size;
enum GNUNET_BLOCK_Type type;
-
+
/* parse and validate message */
msize = ntohs (message->size);
if (msize < sizeof (struct PeerResultMessage))
prm = (struct PeerResultMessage *) message;
put_path_length = ntohl (prm->put_path_length);
get_path_length = ntohl (prm->get_path_length);
- if ( (msize < sizeof (struct PeerResultMessage) +
- (get_path_length + put_path_length) * sizeof (struct GNUNET_PeerIdentity)) ||
- (get_path_length > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
- (put_path_length > GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) )
+ if ((msize <
+ sizeof (struct PeerResultMessage) + (get_path_length +
+ put_path_length) *
+ sizeof (struct GNUNET_PeerIdentity)) ||
+ (get_path_length >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)) ||
+ (put_path_length >
+ GNUNET_SERVER_MAX_MESSAGE_SIZE / sizeof (struct GNUNET_PeerIdentity)))
{
GNUNET_break_op (0);
return GNUNET_YES;
- }
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# P2P RESULTS received"), 1,
- GNUNET_NO);
- put_path = (const struct GNUNET_PeerIdentity*) &prm[1];
+ }
+ put_path = (const struct GNUNET_PeerIdentity *) &prm[1];
get_path = &put_path[put_path_length];
type = ntohl (prm->type);
- data = (const void*) &get_path[get_path_length];
- data_size = msize - (sizeof (struct PeerResultMessage) +
- (get_path_length + put_path_length) * sizeof (struct GNUNET_PeerIdentity));
+ data = (const void *) &get_path[get_path_length];
+ data_size =
+ msize - (sizeof (struct PeerResultMessage) +
+ (get_path_length +
+ put_path_length) * sizeof (struct GNUNET_PeerIdentity));
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# P2P RESULTS received"),
+ 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (GDS_stats,
+ gettext_noop ("# P2P RESULT bytes received"),
+ msize, GNUNET_NO);
+ if (GNUNET_YES == log_route_details_stderr)
+ {
+ char *tmp;
+ tmp = GNUNET_strdup (GNUNET_i2s (&my_identity));
+ LOG_TRAFFIC (GNUNET_ERROR_TYPE_DEBUG, "R5N RESULT %s: %s->%s (%u)\n",
+ GNUNET_h2s (&prm->key), GNUNET_i2s (peer), tmp,
+ get_path_length + 1);
+ GNUNET_free (tmp);
+ }
/* if we got a HELLO, consider it for our own routing table */
- if (type == GNUNET_BLOCK_TYPE_DHT_HELLO)
+ if (GNUNET_BLOCK_TYPE_DHT_HELLO == type)
{
const struct GNUNET_MessageHeader *h;
struct GNUNET_PeerIdentity pid;
return GNUNET_YES;
}
if (GNUNET_OK !=
- GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message*) h,
- &pid))
+ GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) h,
+ &pid))
{
GNUNET_break_op (0);
return GNUNET_YES;
}
- if (0 != memcmp (&my_identity, &pid, sizeof (struct GNUNET_PeerIdentity)))
+ if ( (GNUNET_YES != disable_try_connect) &&
+ (0 != memcmp (&my_identity,
+ &pid,
+ sizeof (struct GNUNET_PeerIdentity))) )
{
- bucket = find_bucket (&pid.hashPubKey);
+ struct GNUNET_HashCode pid_hash;
+
+ GNUNET_CRYPTO_hash (&pid,
+ sizeof (struct GNUNET_PeerIdentity),
+ &pid_hash);
+ bucket = find_bucket (&pid_hash);
if ( (bucket >= 0) &&
- (k_buckets[bucket].peers_size < bucket_size) )
- {
- if (NULL != GDS_transport_handle)
- GNUNET_TRANSPORT_offer_hello (GDS_transport_handle,
- h, NULL, NULL);
- (void) GNUNET_CORE_peer_request_connect (coreAPI,
- &pid,
- NULL, NULL);
- }
+ (k_buckets[bucket].peers_size < bucket_size) &&
+ (NULL != GDS_transport_handle) )
+ {
+ GNUNET_TRANSPORT_offer_hello (GDS_transport_handle,
+ h,
+ NULL,
+ NULL);
+ GNUNET_TRANSPORT_try_connect (GDS_transport_handle,
+ &pid,
+ NULL,
+ NULL); /*FIXME TRY_CONNECT change */
+ }
}
}
/* append 'peer' to 'get_path' */
- {
- struct GNUNET_PeerIdentity xget_path[get_path_length+1];
+ {
+ struct GNUNET_PeerIdentity xget_path[get_path_length + 1];
- memcpy (xget_path, get_path, get_path_length * sizeof (struct GNUNET_PeerIdentity));
+ memcpy (xget_path, get_path,
+ get_path_length * sizeof (struct GNUNET_PeerIdentity));
xget_path[get_path_length] = *peer;
get_path_length++;
- /* forward to local clients */
+ /* forward to local clients */
GDS_CLIENTS_handle_reply (GNUNET_TIME_absolute_ntoh (prm->expiration_time),
- &prm->key,
- get_path_length,
- xget_path,
- put_path_length,
- put_path,
- type,
- data_size,
- data);
+ &prm->key, get_path_length, xget_path,
+ put_path_length, put_path, type, data_size, data);
+ GDS_CLIENTS_process_get_resp (type,
+ xget_path, get_path_length,
+ put_path, put_path_length,
+ GNUNET_TIME_absolute_ntoh (
+ prm->expiration_time),
+ &prm->key,
+ data,
+ data_size);
+ if (GNUNET_YES == cache_results)
+ {
+ struct GNUNET_PeerIdentity xput_path[get_path_length + 1 + put_path_length];
+
+ memcpy (xput_path, put_path, put_path_length * sizeof (struct GNUNET_PeerIdentity));
+ memcpy (&xput_path[put_path_length],
+ xget_path,
+ get_path_length * sizeof (struct GNUNET_PeerIdentity));
+ GDS_DATACACHE_handle_put (GNUNET_TIME_absolute_ntoh (prm->expiration_time),
+ &prm->key,
+ get_path_length + put_path_length, xput_path,
+ type, data_size, data);
+ }
/* forward to other peers */
- GDS_ROUTING_process (type,
- GNUNET_TIME_absolute_ntoh (prm->expiration_time),
- &prm->key,
- put_path_length,
- put_path,
- get_path_length,
- xget_path,
- data,
- data_size);
+ GDS_ROUTING_process (type, GNUNET_TIME_absolute_ntoh (prm->expiration_time),
+ &prm->key, put_path_length, put_path, get_path_length,
+ xget_path, data, data_size);
}
+
return GNUNET_YES;
}
{NULL, 0, 0}
};
unsigned long long temp_config_num;
-
+
+ disable_try_connect
+ = GNUNET_CONFIGURATION_get_value_yesno (GDS_cfg, "DHT", "DISABLE_TRY_CONNECT");
if (GNUNET_OK ==
GNUNET_CONFIGURATION_get_value_number (GDS_cfg, "DHT", "bucket_size",
&temp_config_num))
- bucket_size = (unsigned int) temp_config_num;
- coreAPI = GNUNET_CORE_connect (GDS_cfg,
- 1,
- NULL,
- &core_init,
- &handle_core_connect,
- &handle_core_disconnect,
- NULL, /* Do we care about "status" updates? */
- NULL, GNUNET_NO,
- NULL, GNUNET_NO,
- core_handlers);
- if (coreAPI == NULL)
+ bucket_size = (unsigned int) temp_config_num;
+ cache_results
+ = GNUNET_CONFIGURATION_get_value_yesno (GDS_cfg, "DHT", "CACHE_RESULTS");
+
+ log_route_details_stderr =
+ (NULL != getenv("GNUNET_DHT_ROUTE_DEBUG")) ? GNUNET_YES : GNUNET_NO;
+ ats_perf = GNUNET_ATS_performance_init (GDS_cfg,
+ NULL,
+ NULL);
+ ats_ch = GNUNET_ATS_connectivity_init (GDS_cfg);
+ core_api =
+ GNUNET_CORE_connect (GDS_cfg, NULL, &core_init, &handle_core_connect,
+ &handle_core_disconnect, NULL, GNUNET_NO, NULL,
+ GNUNET_NO, core_handlers);
+ if (core_api == NULL)
return GNUNET_SYSERR;
- all_known_peers = GNUNET_CONTAINER_multihashmap_create (256);
+ all_connected_peers = GNUNET_CONTAINER_multipeermap_create (256,
+ GNUNET_NO);
return GNUNET_OK;
}
void
GDS_NEIGHBOURS_done ()
{
- if (coreAPI == NULL)
+ if (NULL == core_api)
return;
- GNUNET_CORE_disconnect (coreAPI);
- coreAPI = NULL;
- GNUNET_assert (0 == GNUNET_CONTAINER_multihashmap_size (all_known_peers));
- GNUNET_CONTAINER_multihashmap_destroy (all_known_peers);
- all_known_peers = NULL;
- if (GNUNET_SCHEDULER_NO_TASK != find_peer_task)
+ GNUNET_CORE_disconnect (core_api);
+ core_api = NULL;
+ GNUNET_ATS_performance_done (ats_perf);
+ ats_perf = NULL;
+ GNUNET_ATS_connectivity_done (ats_ch);
+ ats_ch = NULL;
+ GNUNET_assert (0 == GNUNET_CONTAINER_multipeermap_size (all_connected_peers));
+ GNUNET_CONTAINER_multipeermap_destroy (all_connected_peers);
+ all_connected_peers = NULL;
+ if (NULL != find_peer_task)
{
GNUNET_SCHEDULER_cancel (find_peer_task);
- find_peer_task = GNUNET_SCHEDULER_NO_TASK;
+ find_peer_task = NULL;
}
}
+/**
+ * Get the ID of the local node.
+ *
+ * @return identity of the local node
+ */
+struct GNUNET_PeerIdentity *
+GDS_NEIGHBOURS_get_id ()
+{
+ return &my_identity;
+}
+
/* end of gnunet-service-dht_neighbours.c */
projects / oweals / gnunet.git / blobdiff