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authorSupriti Singh <supritisingh08@gmail.com>2014-01-21 14:44:16 +0000
committerSupriti Singh <supritisingh08@gmail.com>2014-01-21 14:44:16 +0000
commitc9c39aeeac95bccfc6582c9ed028670f8e51fd21 (patch)
treeaf9d5c15a7e9cdb411f2d570c6b643b787f9629b
parentab88c7e4ab224f1ce3040104e813a28b7910e1ca (diff)
incomplete code for finger and friend tables
-rw-r--r--configure.ac2
-rwxr-xr-xcontrib/pogen.sh4
-rw-r--r--src/dht/dht_api.c4
-rw-r--r--src/dht/gnunet-dht-get.c3
-rw-r--r--src/dht/gnunet-dht-put.c1
-rw-r--r--src/dht/gnunet-service-dht.c1
-rw-r--r--src/dht/gnunet-service-dht_clients.c3
-rw-r--r--src/dht/gnunet-service-dht_neighbours.c2
-rw-r--r--src/dht/gnunet-service-xdht.c4
-rw-r--r--src/dht/gnunet-service-xdht_clients.c6
-rw-r--r--src/dht/gnunet-service-xdht_neighbours.c2089
-rw-r--r--src/dht/gnunet-service-xdht_neighbours.h90
-rw-r--r--src/dht/gnunet-service-xdht_routing.c419
-rw-r--r--src/dht/gnunet-service-xdht_routing.h28
-rw-r--r--src/dht/test_dht_api.c1
-rw-r--r--src/include/gnunet_common.h2
-rw-r--r--src/include/gnunet_protocols.h9
-rw-r--r--src/statistics/test_statistics_api_data.conf1
18 files changed, 559 insertions, 2110 deletions
diff --git a/configure.ac b/configure.ac
index 8f0289106..36da278ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -323,7 +323,7 @@ AC_RUN_IFELSE(
if (!gcry_check_version (GCRYPT_VERSION))
{
fprintf (stderr, "Version mismatch %s <-> %s \n", gcry_check_version (NULL), GCRYPT_VERSION);
- return 1;
+ return 1;
}
gcry_control (GCRYCTL_DISABLE_SECMEM, 0);
diff --git a/contrib/pogen.sh b/contrib/pogen.sh
index 288e19244..c8c091116 100755
--- a/contrib/pogen.sh
+++ b/contrib/pogen.sh
@@ -1,3 +1,3 @@
#!/bin/sh
-find src -name "*.c" | grep -v \# | grep -v /test_ | grep -v /perf_ | grep -v _old | grep -v chat | sort > po/POTFILES.in
-grep -l _\( `find src -name "*.h"` | grep -v "platform.h" | grep -v _old | grep -v chat | sort >> po/POTFILES.in
+find src -name "*.c" | grep -v \# | grep -v /test_ | grep -v /perf_ | grep -v _old | grep -v chat | sort > /po/POTFILES.in
+grep -l _\( `find src -name "*.h"` | grep -v "platform.h" | grep -v _old | grep -v chat | sort >> /po/POTFILES.in
diff --git a/src/dht/dht_api.c b/src/dht/dht_api.c
index e045a8b75..f94d1f67a 100644
--- a/src/dht/dht_api.c
+++ b/src/dht/dht_api.c
@@ -599,6 +599,7 @@ transmit_pending (void *cls,
struct PendingMessage *head;
size_t tsize;
+
handle->th = NULL;
if (NULL == buf)
{
@@ -635,6 +636,7 @@ transmit_pending (void *cls,
{
LOG (GNUNET_ERROR_TYPE_DEBUG, "Starting to process replies from DHT\n");
handle->in_receive = GNUNET_YES;
+
GNUNET_CLIENT_receive (handle->client, &service_message_handler, handle,
GNUNET_TIME_UNIT_FOREVER_REL);
}
@@ -900,6 +902,7 @@ service_message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
uint16_t msize;
int ret;
+
if (NULL == msg)
{
LOG (GNUNET_ERROR_TYPE_DEBUG,
@@ -1148,6 +1151,7 @@ GNUNET_DHT_put (struct GNUNET_DHT_Handle *handle,
struct PendingMessage *pending;
struct GNUNET_DHT_PutHandle *ph;
+
msize = sizeof (struct GNUNET_DHT_ClientPutMessage) + size;
if ((msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE) ||
(size >= GNUNET_SERVER_MAX_MESSAGE_SIZE))
diff --git a/src/dht/gnunet-dht-get.c b/src/dht/gnunet-dht-get.c
index e7e809323..2483e3cd1 100644
--- a/src/dht/gnunet-dht-get.c
+++ b/src/dht/gnunet-dht-get.c
@@ -26,6 +26,7 @@
#include "platform.h"
#include "gnunet_dht_service.h"
+#define LOG(kind,...) GNUNET_log_from (kind, "dht-clients",__VA_ARGS__)
/**
* The type of the query
*/
@@ -150,6 +151,8 @@ run (void *cls, char *const *args, const char *cfgfile,
{
struct GNUNET_HashCode key;
+
+
cfg = c;
if (NULL == query_key)
{
diff --git a/src/dht/gnunet-dht-put.c b/src/dht/gnunet-dht-put.c
index 67884c423..008f989a1 100644
--- a/src/dht/gnunet-dht-put.c
+++ b/src/dht/gnunet-dht-put.c
@@ -229,6 +229,7 @@ main (int argc, char *const *argv)
if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
return 2;
+
return (GNUNET_OK ==
GNUNET_PROGRAM_run (argc, argv, "gnunet-dht-put",
gettext_noop
diff --git a/src/dht/gnunet-service-dht.c b/src/dht/gnunet-service-dht.c
index 5efa9ddc6..cc1e0dc6b 100644
--- a/src/dht/gnunet-service-dht.c
+++ b/src/dht/gnunet-service-dht.c
@@ -145,6 +145,7 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
GDS_cfg = c;
+
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_time (c, "transport", "HELLO_EXPIRATION", &hello_expiration))
{
diff --git a/src/dht/gnunet-service-dht_clients.c b/src/dht/gnunet-service-dht_clients.c
index c6e72cf44..5195fa3ec 100644
--- a/src/dht/gnunet-service-dht_clients.c
+++ b/src/dht/gnunet-service-dht_clients.c
@@ -1023,7 +1023,7 @@ forward_reply (void *cls, const struct GNUNET_HashCode * key, void *value)
int do_free;
struct GNUNET_HashCode ch;
unsigned int i;
-
+
LOG_TRAFFIC (GNUNET_ERROR_TYPE_DEBUG,
"XDHT CLIENT-RESULT %s\n",
GNUNET_h2s (key));
@@ -1198,6 +1198,7 @@ GDS_CLIENTS_handle_reply (struct GNUNET_TIME_Absolute expiration,
frc.type = type;
GNUNET_CONTAINER_multihashmap_get_multiple (forward_map, key, &forward_reply,
&frc);
+
if (GNUNET_NO == frc.do_copy)
{
/* did not match any of the requests, free! */
diff --git a/src/dht/gnunet-service-dht_neighbours.c b/src/dht/gnunet-service-dht_neighbours.c
index d89f26685..d15af4ee6 100644
--- a/src/dht/gnunet-service-dht_neighbours.c
+++ b/src/dht/gnunet-service-dht_neighbours.c
@@ -2224,4 +2224,4 @@ GDS_NEIGHBOURS_get_id ()
}
-/* end of gnunet-service-dht_neighbours.c */
+/* end of gnunet-service-dht_neighbours.c */ \ No newline at end of file
diff --git a/src/dht/gnunet-service-xdht.c b/src/dht/gnunet-service-xdht.c
index a421d25b3..432fea354 100644
--- a/src/dht/gnunet-service-xdht.c
+++ b/src/dht/gnunet-service-xdht.c
@@ -24,6 +24,7 @@
* @author Christian Grothoff
* @author Nathan Evans
*/
+
#include "platform.h"
#include "gnunet_block_lib.h"
#include "gnunet_util_lib.h"
@@ -113,6 +114,7 @@ shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
GNUNET_TRANSPORT_disconnect (GDS_transport_handle);
GDS_transport_handle = NULL;
}
+
GDS_NEIGHBOURS_done ();
GDS_DATACACHE_done ();
GDS_ROUTING_done ();
@@ -152,11 +154,13 @@ run (void *cls, struct GNUNET_SERVER_Handle *server,
}
GDS_block_context = GNUNET_BLOCK_context_create (GDS_cfg);
GDS_stats = GNUNET_STATISTICS_create ("dht", GDS_cfg);
+
GDS_ROUTING_init ();
GDS_NSE_init ();
GDS_DATACACHE_init ();
GDS_HELLO_init ();
GDS_CLIENTS_init (server);
+
if (GNUNET_OK != GDS_NEIGHBOURS_init ())
{
shutdown_task (NULL, NULL);
diff --git a/src/dht/gnunet-service-xdht_clients.c b/src/dht/gnunet-service-xdht_clients.c
index 9cc156e3d..72d086606 100644
--- a/src/dht/gnunet-service-xdht_clients.c
+++ b/src/dht/gnunet-service-xdht_clients.c
@@ -21,8 +21,7 @@
/**
* @file dht/gnunet-service-xdht_clients.c
* @brief GNUnet DHT service's client management code
- * @author Christian Grothoff
- * @author Nathan Evans
+ * @author Supriti Singh
*/
#include "platform.h"
@@ -362,6 +361,7 @@ static void
handle_client_disconnect (void *cls,
struct GNUNET_SERVER_Client *client)
{
+
struct ClientList *pos;
struct PendingMessage *reply;
struct ClientMonitorRecord *monitor;
@@ -428,6 +428,7 @@ transmit_request (struct ClientQueryRecord *cqr)
LOG (GNUNET_ERROR_TYPE_DEBUG,
"Initiating GET for %s, replication %u, already have %u replies\n",
GNUNET_h2s(&cqr->key), cqr->replication, cqr->seen_replies_count);
+
GDS_NEIGHBOURS_handle_get (cqr->type, cqr->msg_options, cqr->replication,
0 /* hop count */ ,
&cqr->key, cqr->xquery, cqr->xquery_size, reply_bf,
@@ -532,6 +533,7 @@ handle_dht_local_put (void *cls, struct GNUNET_SERVER_Client *client,
peer_bf =
GNUNET_CONTAINER_bloomfilter_init (NULL, DHT_BLOOM_SIZE,
GNUNET_CONSTANTS_BLOOMFILTER_K);
+
GDS_NEIGHBOURS_handle_put (ntohl (dht_msg->type), ntohl (dht_msg->options),
ntohl (dht_msg->desired_replication_level),
GNUNET_TIME_absolute_ntoh (dht_msg->expiration),
diff --git a/src/dht/gnunet-service-xdht_neighbours.c b/src/dht/gnunet-service-xdht_neighbours.c
index 8f47feef5..06891bb21 100644
--- a/src/dht/gnunet-service-xdht_neighbours.c
+++ b/src/dht/gnunet-service-xdht_neighbours.c
@@ -21,8 +21,7 @@
/**
* @file dht/gnunet-service-xdht_neighbours.c
* @brief GNUnet DHT service's bucket and neighbour management code
- * @author Christian Grothoff
- * @author Nathan Evans
+ * @author Supriti Singh
*/
#include "platform.h"
@@ -49,27 +48,8 @@
#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 (struct GNUNET_HashCode) * 8
-
-/**
- * What is the maximum number of peers in a given bucket.
- */
-#define DEFAULT_BUCKET_SIZE 8
-
-/**
- * Desired replication level for FIND PEER requests
- */
-#define FIND_PEER_REPLICATION_LEVEL 4
-
-/**
- * Maximum allowed replication level for all requests.
- */
-#define MAXIMUM_REPLICATION_LEVEL 16
+/* The maximum possible fingers of a peer. */
+#define MAX_FINGERS 256
/**
* Maximum allowed number of pending messages per peer.
@@ -77,33 +57,24 @@
#define MAXIMUM_PENDING_PER_PEER 64
/**
- * How often to update our preference levels for peers in our routing tables.
- */
-#define DHT_DEFAULT_PREFERENCE_INTERVAL GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 2)
-
-/**
- * How long at least to wait before sending another find peer request.
+ * How long at least to wait before sending another find finger trail request.
*/
#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.
+ * How long at most to wait before sending another find finger trail request.
*/
#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
+/* FIXME:
+ * 1) Bloomfilter is not required for X-Vine.
+ * Keep the field now but remove it when implementing PUT/GET.
+ * 2) also, check the field of put/get/result if all are required for
+ * x-vine or not. */
+
/**
* P2P PUT message
*/
@@ -255,175 +226,217 @@ struct PeerGetMessage
*/
struct GNUNET_HashCode key;
- /* xquery */
-
- /* result bloomfilter */
-
};
-GNUNET_NETWORK_STRUCT_END
+
/**
- * Linked list of messages to send to a particular other peer.
+ * FIXME : should change the fields
+ * P2P Trail setup message
*/
-struct P2PPendingMessage
+struct PeerTrailSetupMessage
{
/**
- * Pointer to next item in the list
- */
- struct P2PPendingMessage *next;
-
- /**
- * Pointer to previous item in the list
- */
- struct P2PPendingMessage *prev;
-
- /**
- * Message importance level. FIXME: used? useful?
- */
- unsigned int importance;
-
- /**
- * When does this message time out?
+ * Type: #GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_SETUP
*/
- struct GNUNET_TIME_Absolute timeout;
+ struct GNUNET_MessageHeader header;
- /**
- * Actual message to be sent, allocated at the end of the struct:
- * // msg = (cast) &pm[1];
- * // memcpy (&pm[1], data, len);
- */
- const struct GNUNET_MessageHeader *msg;
+ /* Source peer which wants to find trail to one of its finger. */
+ struct GNUNET_PeerIdentity *source_peer;
+
+ /* Finger id to which we want to set up the trail to. */
+ struct GNUNET_PeerIdentity *destination_finger;
+
+ /* This field contains the peer to which this packet is forwarded.
+ If temp_destination = my_identity, then check if destination_finger = temp_destination.
+ If temp_destination != my_identity, then it means you are part of trail that
+ you take to temp_destination. So, search in routing table.
+ */
+ struct GNUNET_PeerIdentity *temp_destination;
+
+ /*FIXME: I want to store a list of all the peer_id which are part of trail in
+ this message
+ Also, when sending the reply back we are just going to read this list
+ backwards. Assuming that we add a new peer at the end of our list. */
+
+
};
-
-
/**
- * Entry for a peer in a bucket.
+ * P2P Trail setup Result message
+ * TODO: Check the fields and if they are really required.
+ * FIXME: should change the fields
+ * it can contain the peertrailsetup only
+ * and we just read the list backwards and make the
+ * packet reach to destination
+ *There can be lots and lots of cases where the packet are lost but
+ * as we have non blocking function call we are ok
+ * i think i will implement and verify by printing the design.
*/
-struct PeerInfo
+struct PeerTrailSetupResultMessage
{
/**
- * Next peer entry (DLL)
- */
- struct PeerInfo *next;
-
- /**
- * Prev peer entry (DLL)
+ * Type: #GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_RESULT_SETUP
*/
- struct PeerInfo *prev;
+ struct GNUNET_MessageHeader header;
/**
- * Count of outstanding messages for peer.
+ * Content type.
*/
- unsigned int pending_count;
+ uint32_t type GNUNET_PACKED;
/**
- * Head of pending messages to be sent to this peer.
+ * Length of the PUT path that follows (if tracked).
*/
- struct P2PPendingMessage *head;
+ uint32_t put_path_length GNUNET_PACKED;
/**
- * Tail of pending messages to be sent to this peer.
+ * Length of the GET path that follows (if tracked).
*/
- struct P2PPendingMessage *tail;
+ uint32_t get_path_length GNUNET_PACKED;
/**
- * Core handle for sending messages to this peer.
+ * When does the content expire?
*/
- struct GNUNET_CORE_TransmitHandle *th;
+ struct GNUNET_TIME_AbsoluteNBO expiration_time;
/**
- * Task for scheduling preference updates
+ * The key of the corresponding GET request.
*/
- GNUNET_SCHEDULER_TaskIdentifier preference_task;
+ struct GNUNET_HashCode key;
- /**
- * What is the identity of the peer?
- */
- struct GNUNET_PeerIdentity id;
+ /* put path (if tracked) */
-#if 0
- /**
- * What is the average latency for replies received?
- */
- struct GNUNET_TIME_Relative latency;
+ /* get path (if tracked) */
- /**
- * Transport level distance to peer.
- */
- unsigned int distance;
-#endif
+ /* Payload */
};
-
+GNUNET_NETWORK_STRUCT_END
+
+
/**
- * Peers are grouped into buckets.
+ * Linked list of messages to send to a particular other peer.
*/
-struct PeerBucket
+struct P2PPendingMessage
{
/**
- * Head of DLL
+ * Pointer to next item in the list
*/
- struct PeerInfo *head;
+ struct P2PPendingMessage *next;
/**
- * Tail of DLL
+ * Pointer to previous item in the list
*/
- struct PeerInfo *tail;
+ struct P2PPendingMessage *prev;
/**
- * Number of peers in the bucket.
+ * When does this message time out?
*/
- unsigned int peers_size;
+ struct GNUNET_TIME_Absolute timeout;
+
+ /**
+ * Message importance level. FIXME: used? useful?
+ */
+ unsigned int importance;
+
+ /**
+ * Actual message to be sent, allocated at the end of the struct:
+ * // msg = (cast) &pm[1];
+ * // memcpy (&pm[1], data, len);
+ */
+ const struct GNUNET_MessageHeader *msg;
+
};
/**
- * Do we cache all results that we are routing in the local datacache?
+ * Entry in friend_peers map.
*/
-static int cache_results;
+struct FriendInfo
+{
+
+ /**
+ * What is the identity of the peer?
+ */
+ struct GNUNET_PeerIdentity id;
-/**
- * Should routing details be logged to stderr (for debugging)?
- */
-static int log_route_details_stderr;
+ /**
+ * Count of outstanding messages for peer.
+ */
+ unsigned int pending_count;
-/**
- * The lowest currently used bucket, initially 0 (for 0-bits matching bucket).
- */
-static unsigned int closest_bucket;
+ /**
+ * Head of pending messages to be sent to this peer.
+ */
+ struct P2PPendingMessage *head;
-/**
- * How many peers have we added since we sent out our last
- * find peer request?
- */
-static unsigned int newly_found_peers;
+ /**
+ * Tail of pending messages to be sent to this peer.
+ */
+ struct P2PPendingMessage *tail;
-/**
- * Option for testing that disables the 'connect' function of the DHT.
- */
-static int disable_try_connect;
+
+ /**
+ * TODO - How and where to use this?
+ * Core handle for sending messages to this peer.
+ */
+ struct GNUNET_CORE_TransmitHandle *th;
-/**
- * The buckets. Array of size MAX_BUCKET_SIZE. 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.
+ * Linked List of peers which are part of trail to reach a particular Finger.
*/
-static struct GNUNET_CONTAINER_MultiPeerMap *all_known_peers;
+struct TrailList
+{
+ /**
+ * Pointer to next item in the list
+ */
+ struct TrailList *next;
+
+ /**
+ * Pointer to previous item in the list
+ */
+ struct TrailList *prev;
+};
/**
- * Maximum size for each bucket.
+ * Entry in finger_peers map.
*/
-static unsigned int bucket_size = DEFAULT_BUCKET_SIZE;
+struct FingerInfo
+{
+ /**
+ * What is the identity of the peer?
+ */
+ struct GNUNET_PeerIdentity id;
+
+ /* FIXME:: Range of keys for which this finger is responsible */
+ /* Start of the interval of keys for which this finger is responsible. */
+ unsigned int interval_start;
+
+ /* End of the interval of keys for which this finger is responsible. */
+ unsigned int interval_end;
+
+
+ /* FIXME:: A double link list which stores the trail to reach it from given peer .*/
+
+ /**
+ * Head of trail list.
+ */
+ struct TrailList *head;
+
+ /**
+ * Tail of trail list.
+ */
+ struct TrailList *tail;
+};
+
/**
- * Task that sends FIND PEER requests.
+ * Task that sends FIND FINGER TRAIL requests.
*/
-static GNUNET_SCHEDULER_TaskIdentifier find_peer_task;
+static GNUNET_SCHEDULER_TaskIdentifier find_finger_trail_task;
/**
* Identity of this peer.
@@ -436,340 +449,35 @@ static struct GNUNET_PeerIdentity my_identity;
static struct GNUNET_HashCode my_identity_hash;
/**
- * Handle to CORE.
- */
-static struct GNUNET_CORE_Handle *core_api;
-
-/**
- * Handle to ATS.
- */
-static struct GNUNET_ATS_PerformanceHandle *atsAPI;
-
-
-
-/**
- * Find the optimal bucket for this key.
- *
- * @param hc the hashcode to compare our identity to
- * @return the proper bucket index, or GNUNET_SYSERR
- * on error (same hashcode)
- */
-static int
-find_bucket (const struct GNUNET_HashCode *hc)
-{
- unsigned int bits;
-
- 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;
- }
- return MAX_BUCKETS - bits - 1;
-}
-
-
-/**
- * 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)
-{
- struct PeerInfo *peer = cls;
- uint64_t preference;
- unsigned int matching;
- int bucket;
- struct GNUNET_HashCode phash;
-
- peer->preference_task = GNUNET_SCHEDULER_NO_TASK;
- if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
- return;
- GNUNET_CRYPTO_hash (&peer->id,
- sizeof (struct GNUNET_PeerIdentity),
- &phash);
- matching =
- GNUNET_CRYPTO_hash_matching_bits (&my_identity_hash,
- &phash);
- if (matching >= 64)
- matching = 63;
- 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;
- }
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Preference updates given to core"),
- 1, GNUNET_NO);
- GNUNET_ATS_performance_change_preference (atsAPI, &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);
-
-
-}
-
-
-/**
- * Closure for 'add_known_to_bloom'.
+ * Hash map of all the friends of a peer
*/
-struct BloomConstructorContext
-{
- /**
- * Bloom filter under construction.
- */
- struct GNUNET_CONTAINER_BloomFilter *bloom;
-
- /**
- * Mutator to use.
- */
- uint32_t bf_mutator;
-};
-
+static struct GNUNET_CONTAINER_MultiPeerMap *friend_peers;
/**
- * Add each of the peers we already know to the bloom filter of
- * the request so that we don't get duplicate HELLOs.
- *
- * @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)
+ * Hash map of all the fingers of a peer
*/
-static int
-add_known_to_bloom (void *cls,
- const struct GNUNET_PeerIdentity *key,
- void *value)
-{
- struct BloomConstructorContext *ctx = cls;
- 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;
-}
-
+static struct GNUNET_CONTAINER_MultiPeerMap *finger_peers;
/**
- * Task to send a find peer message for our own peer identifier
- * so that we can find the closest peers in the network to ourselves
- * and attempt to connect to them.
- *
- * @param cls closure for this task
- * @param tc the context under which the task is running
+ * Handle to ATS.
*/
-static void
-send_find_peer_message (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct GNUNET_TIME_Relative next_send_time;
- struct BloomConstructorContext bcc;
- struct GNUNET_CONTAINER_BloomFilter *peer_bf;
-
- find_peer_task = GNUNET_SCHEDULER_NO_TASK;
- if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
- return;
- 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);
- newly_found_peers = 0;
- return;
- }
- 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_multipeermap_iterate (all_known_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);
- // FIXME: pass priority!?
- GDS_NEIGHBOURS_handle_get (GNUNET_BLOCK_TYPE_DHT_HELLO,
- 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;
- find_peer_task =
- GNUNET_SCHEDULER_add_delayed (next_send_time, &send_find_peer_message,
- NULL);
-}
-
+static struct GNUNET_ATS_PerformanceHandle *atsAPI;
/**
- * Method called whenever a peer connects.
- *
- * @param cls closure
- * @param peer peer identity this notification is about
+ * Handle to CORE.
*/
-static void
-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_multipeermap_contains (all_known_peers,
- peer))
- {
- GNUNET_break (0);
- return;
- }
- 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].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++;
- }
- GNUNET_assert (GNUNET_OK ==
- GNUNET_CONTAINER_multipeermap_put (all_known_peers,
- peer, ret,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
- if (1 == GNUNET_CONTAINER_multipeermap_size (all_known_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);
- }
-}
-
+static struct GNUNET_CORE_Handle *core_api;
/**
- * Method called whenever a peer disconnects.
- *
- * @param cls closure
- * @param peer peer identity this notification is about
+ * The highest finger_id that we have found trail to.
*/
-static void
-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;
-
- /* 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_multipeermap_get (all_known_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_multipeermap_remove (all_known_peers,
- peer,
- to_remove));
- if (GNUNET_SCHEDULER_NO_TASK != to_remove->preference_task)
- {
- GNUNET_SCHEDULER_cancel (to_remove->preference_task);
- to_remove->preference_task = GNUNET_SCHEDULER_NO_TASK;
- }
- 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);
- 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))
- closest_bucket--;
-
- 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);
- discarded++;
- GNUNET_free (pos);
- }
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Queued messages discarded (peer disconnected)"),
- discarded, GNUNET_NO);
- GNUNET_free (to_remove);
-}
+static unsigned int finger_id;
/**
* Called when core is ready to send a message we asked for
- * out to the destination.
+ * out to the destination. At the moment, I have just copied it from previous
+ * code.
*
* @param cls the 'struct PeerInfo' of the target peer
* @param size number of bytes available in buf
@@ -779,7 +487,7 @@ handle_core_disconnect (void *cls,
static size_t
core_transmit_notify (void *cls, size_t size, void *buf)
{
- struct PeerInfo *peer = cls;
+ struct FriendInfo *peer = cls;
char *cbuf = buf;
struct P2PPendingMessage *pending;
size_t off;
@@ -844,8 +552,9 @@ core_transmit_notify (void *cls, size_t size, void *buf)
* @param peer message queue to process
*/
static void
-process_peer_queue (struct PeerInfo *peer)
+process_peer_queue (struct FriendInfo *peer)
{
+
struct P2PPendingMessage *pending;
if (NULL == (pending = peer->head))
@@ -856,6 +565,8 @@ process_peer_queue (struct PeerInfo *peer)
gettext_noop
("# Bytes of bandwidth requested from core"),
ntohs (pending->msg->size), GNUNET_NO);
+ /*FIXME : here I don't know the use of importance, time out
+ Will check at run time if its all correct. */
peer->th =
GNUNET_CORE_notify_transmit_ready (core_api, GNUNET_NO,
pending->importance,
@@ -868,377 +579,81 @@ process_peer_queue (struct PeerInfo *peer)
/**
- * To how many peers should we (on average) forward the request to
- * obtain the desired target_replication count (on average).
- *
- * @param hop_count number of hops the message has traversed
- * @param target_replication the number of total paths desired
- * @return Some number of peers to forward the message to
+ * This function is similar to get request but used specifically for trail
+ * construction. I don't know if using GDS_NEIGHBOURS_handle_get is sufficient
+ * or we need this new function.
+ * @param Finger id to which we want to setup the trail.
+ * @param Friend id through which we will try to setup the trail.
*/
-static unsigned int
-get_forward_count (uint32_t hop_count, uint32_t target_replication)
-{
- uint32_t random_value;
- uint32_t forward_count;
- float target_value;
-
- 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)
- {
- /* Once we have reached our ideal number of hops, only forward to 1 peer */
- return 1;
- }
- /* bound by system-wide maximum */
- 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));
- /* 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);
- if (random_value < (target_value * UINT32_MAX))
- forward_count++;
- return forward_count;
-}
-
-
-/**
- * Compute the distance between have and target as a 32-bit value.
- * 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 struct GNUNET_HashCode *target,
- const struct GNUNET_HashCode *have)
-{
- unsigned int bucket;
- unsigned int msb;
- unsigned int lsb;
- unsigned int i;
-
- /* We have to represent the distance between two 2^9 (=512)-bit
- * numbers as a 2^5 (=32)-bit number with "0" being used for the
- * two numbers being identical; furthermore, we need to
- * guarantee that a difference in the number of matching
- * bits is always represented in the result.
- *
- * We use 2^32/2^9 numerical values to distinguish between
- * hash codes that have the same LSB bit distance and
- * use the highest 2^9 bits of the result to signify the
- * number of (mis)matching LSB bits; if we have 0 matching
- * and hence 512 mismatching LSB bits we return -1 (since
- * 512 itself cannot be represented with 9 bits) */
-
- /* first, calculate the most significant 9 bits of our
- * result, aka the number of LSBs */
- bucket = GNUNET_CRYPTO_hash_matching_bits (target, have);
- /* bucket is now a value between 0 and 512 */
- if (bucket == 512)
- return 0; /* perfect match */
- if (bucket == 0)
- return (unsigned int) -1; /* LSB differs; use max (if we did the bit-shifting
- * below, we'd end up with max+1 (overflow)) */
-
- /* calculate the most significant bits of the final result */
- msb = (512 - bucket) << (32 - 9);
- /* calculate the 32-9 least significant bits of the final result by
- * looking at the differences in the 32-9 bits following the
- * mismatching bit at 'bucket' */
- lsb = 0;
- for (i = bucket + 1;
- (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))
- lsb |= (1 << (bucket + 32 - 9 - i)); /* first bit set will be 10,
- * last bit set will be 31 -- if
- * i does not reach 512 first... */
- }
- return msb | lsb;
-}
-
-
-/**
- * Check whether my identity is closer than any known peers. If a
- * non-null bloomfilter is given, check if this is the closest peer
- * that hasn't already been routed to.
- *
- * @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.
- */
-static int
-am_closest_peer (const struct GNUNET_HashCode *key,
- const struct GNUNET_CONTAINER_BloomFilter *bloom)
-{
- int bits;
- int other_bits;
- int bucket_num;
- int count;
- struct PeerInfo *pos;
- struct GNUNET_HashCode phash;
-
- if (0 == memcmp (&my_identity_hash, key, sizeof (struct GNUNET_HashCode)))
- return GNUNET_YES;
- bucket_num = find_bucket (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, &phash)))
- {
- pos = pos->next;
- continue; /* Skip already checked entries */
- }
- 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 */
- return GNUNET_YES;
- pos = pos->next;
- }
- /* No peers closer, we are the closest! */
- return GNUNET_YES;
-}
-
-
-/**
- * Select a peer from the routing table that would be a good routing
- * destination for sending a message for "key". The resulting peer
- * must not be in the set of blocked peers.<p>
- *
- * Note that we should not ALWAYS select the closest peer to the
- * target, peers further away from the target should be chosen with
- * 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
- * @param hops how many hops has this message traversed thus far
- * @return Peer to route to, or NULL on error
- */
-static struct PeerInfo *
-select_peer (const struct GNUNET_HashCode * key,
- const struct GNUNET_CONTAINER_BloomFilter *bloom, uint32_t hops)
+void
+GDS_NEIGHBOURS_trail_setup(struct GNUNET_PeerIdentity *finger_id,
+ struct FriendInfo *target_friend)
{
- unsigned int bc;
- unsigned int count;
- unsigned int selected;
- struct PeerInfo *pos;
- 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 = 0; bc <= closest_bucket; bc++)
- {
- pos = k_buckets[bc].head;
- count = 0;
- while ((pos != NULL) && (count < bucket_size))
- {
- 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, &phash);
- if (dist < smallest_distance)
- {
- chosen = pos;
- smallest_distance = dist;
- }
- }
- else
- {
- 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);
- return chosen;
- }
-
- /* select "random" peer */
- /* count number of peers that are available and not filtered */
- count = 0;
- for (bc = 0; bc <= closest_bucket; bc++)
- {
- pos = k_buckets[bc].head;
- while ((pos != NULL) && (count < bucket_size))
+ /*
+ 1. first construct the trail message which should contain
+ * the source peer id, the finger peer id and randomly chosen one of our
+ * friends peer id. Should there be a new block type?
+ * Construct a message and add it to your peer queue of the friend you have
+ * chosen to send the packet to and then call process_peer_queue.
+ * Just follow GDS_NEIGHBOURS_handle_reply to complete this function.
+ */
+ /*
+ * FIXME: check if pending message actually contains the correct data.
+ */
+ struct P2PPendingMessage *pending;
+ /* FIXME: why I have defined as **? verify by testing. */
+ struct PeerTrailSetupMessage *tsm;
+
+
+ if (target_friend->pending_count >= MAXIMUM_PENDING_PER_PEER)
{
- 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_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 */
- }
- count++;
- pos = pos->next;
- }
- }
- if (0 == count) /* No peers to select from! */
- {
- GNUNET_STATISTICS_update (GDS_stats,
- 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 = 0; bc <= closest_bucket; bc++)
- {
- for (pos = k_buckets[bc].head; ((pos != NULL) && (count < bucket_size)); pos = pos->next)
- {
- GNUNET_CRYPTO_hash (&pos->id,
- sizeof (struct GNUNET_PeerIdentity),
- &phash);
- if ((bloom != NULL) &&
- (GNUNET_YES ==
- GNUNET_CONTAINER_bloomfilter_test (bloom, &phash)))
- {
- continue; /* Ignore bloomfiltered peers */
- }
- if (0 == selected--)
- return pos;
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# P2P messages dropped due to full queue"),
+ 1, GNUNET_NO);
}
- }
- GNUNET_break (0);
- return NULL;
+
+ pending = GNUNET_malloc (sizeof (struct P2PPendingMessage));
+ tsm = (struct PeerTrailSetupMessage *) &pending[1];
+ pending->msg = &tsm->header;
+ tsm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_SETUP);
+ tsm->destination_finger = finger_id;
+ tsm->source_peer = &my_identity;
+ GNUNET_CONTAINER_DLL_insert_tail (target_friend->head, target_friend->tail, pending);
+ target_friend->pending_count++;
+ process_peer_queue(target_friend);
}
-/**
- * Compute the set of peers that the given request should be
- * forwarded to.
+/**FIXME: Old implementation just to remove error
+ * Perform a GET operation. Forwards the given request to other
+ * peers. Does not lookup the key locally. May do nothing if this is
+ * the only peer in the network (or if we are the closest peer in the
+ * network).
*
- * @param key routing key
- * @param bloom bloom filter excluding peers as targets, all selected
- * peers will be added to the bloom filter
- * @param hop_count number of hops the request has traversed so far
- * @param target_replication desired number of replicas
- * @param targets where to store an array of target peers (to be
- * free'd by the caller)
- * @return number of peers returned in 'targets'.
+ * @param type type of the block
+ * @param options routing options
+ * @param desired_replication_level desired replication count
+ * @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 @a xquery
+ * @param reply_bf bloomfilter to filter duplicates
+ * @param reply_bf_mutator mutator for @a reply_bf
+ * @param peer_bf filter for peers not to select (again)
*/
-static unsigned int
-get_target_peers (const struct GNUNET_HashCode *key,
- struct GNUNET_CONTAINER_BloomFilter *bloom,
- uint32_t hop_count, uint32_t target_replication,
- struct PeerInfo ***targets)
+void
+GDS_NEIGHBOURS_handle_get (enum GNUNET_BLOCK_Type type,
+ 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 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 (0 == ret)
- {
- *targets = NULL;
- return 0;
- }
- rtargets = GNUNET_malloc (sizeof (struct PeerInfo *) * ret);
- for (off = 0; off < ret; off++)
- {
- nxt = select_peer (key, bloom, hop_count);
- 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,
- &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_known_peers),
- (unsigned int) hop_count, GNUNET_h2s (key), ret);
- if (0 == off)
- {
- GNUNET_free (rtargets);
- *targets = NULL;
- 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;
+
}
-
-/**
+/**FIXME: Old implementation just to remove error.
* Perform a PUT operation. Forwards the given request to other
* peers. Does not store the data locally. Does not give the
* data to local clients. May do nothing if this is the only
@@ -1269,307 +684,155 @@ GDS_NEIGHBOURS_handle_put (enum GNUNET_BLOCK_Type type,
struct GNUNET_PeerIdentity *put_path,
const void *data, size_t data_size)
{
- unsigned int target_count;
- unsigned int i;
- struct PeerInfo **targets;
- struct PeerInfo *target;
- struct P2PPendingMessage *pending;
- size_t msize;
- struct PeerPutMessage *ppm;
- struct GNUNET_PeerIdentity *pp;
- struct GNUNET_HashCode thash;
- GNUNET_assert (NULL != bf);
- 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)
- {
- 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;
- }
- msize =
- put_path_length * sizeof (struct GNUNET_PeerIdentity) + data_size +
- sizeof (struct PeerPutMessage);
- if (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- put_path_length = 0;
- msize = data_size + sizeof (struct PeerPutMessage);
- }
- if (msize >= GNUNET_SERVER_MAX_MESSAGE_SIZE)
- {
- GNUNET_break (0);
- GNUNET_free (targets);
- return;
- }
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# PUT messages queued for transmission"),
- target_count, GNUNET_NO);
- for (i = 0; i < target_count; i++)
+}
+/**
+ * Randomly choose one of your friends from the friends_peer map
+ * @return Friend
+ */
+static struct FriendInfo *
+get_friend()
+{
+
+ return NULL;
+}
+
+/**
+ * Use Chord formula finger[i]=(n+2^(i-1))mod m,
+ * where i = current finger map index.
+ * n = own peer identity
+ * m = number of bits in peer id.
+ * @return finger_peer_id for which we have to find the trail through network.
+ */
+static struct GNUNET_PeerIdentity *
+finger_id_to_search()
+{
+ /* After finding the finger_id increment the value of 'i'
+ so that the next search begins from there. */
+ struct GNUNET_PeerIdentity *finger_peer_id;
+
+
+
+ /* FIXME: This typecasting is not correct. */
+ //finger_peer_id = ((unsigned int)(my_identity.public_key.q_y)+(2^(finger_id)))%MAX_FINGERS;
+
+ /* Increment the next finger_id we should be searching. */
+ finger_id = (finger_id+1)%MAX_FINGERS;
+
+ return finger_peer_id;
+
+}
+
+
+/**
+ * Task to send a find finger trail message. We attempt to find trail
+ * to our fingers in the network.
+ *
+ * @param cls closure for this task
+ * @param tc the context under which the task is running
+ */
+static void
+send_find_finger_trail_message (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ /* finger we are searching for */
+ struct GNUNET_PeerIdentity *finger_peer_id;
+ struct FriendInfo *friend_peer_id;
+ struct GNUNET_TIME_Relative next_send_time;
+
+ /* FIXME: Not sure if this is required. Here I am checking if I have
+ already found trail for each of the possible finger. If yes then don't look
+ anymore in the network. */
+ if (GNUNET_CONTAINER_multipeermap_size(finger_peers) == MAX_FINGERS)
{
- target = targets[i];
- if (target->pending_count >= MAXIMUM_PENDING_PER_PEER)
- {
- GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# P2P messages dropped due to full queue"),
- 1, GNUNET_NO);
- continue; /* skip */
- }
- 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->msg = &ppm->header;
- ppm->header.size = htons (msize);
- ppm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_PUT);
- ppm->options = htonl (options);
- ppm->type = htonl (type);
- ppm->hop_count = htonl (hop_count + 1);
- 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_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));
- ppm->key = *key;
- 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);
- target->pending_count++;
- process_peer_queue (target);
+ return;
}
- GNUNET_free (targets);
+
+ /* Find the finger_peer_id to which we want to setup the trial */
+ finger_peer_id = finger_id_to_search();
+
+ /* Choose a friend randomly from your friend_peers map. */
+ friend_peer_id = get_friend();
+
+ GDS_NEIGHBOURS_trail_setup(finger_peer_id, friend_peer_id);
+
+ /* FIXME: Is using finger_id to generate random function ok here. */
+ 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 /
+ (finger_id + 1));
+
+ find_finger_trail_task =
+ GNUNET_SCHEDULER_add_delayed (next_send_time, &send_find_finger_trail_message,
+ NULL);
}
/**
- * Perform a GET operation. Forwards the given request to other
- * peers. Does not lookup the key locally. May do nothing if this is
- * the only peer in the network (or if we are the closest peer in the
- * network).
+ * Method called whenever a peer connects.
*
- * @param type type of the block
- * @param options routing options
- * @param desired_replication_level desired replication count
- * @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 @a xquery
- * @param reply_bf bloomfilter to filter duplicates
- * @param reply_bf_mutator mutator for @a reply_bf
- * @param peer_bf filter for peers not to select (again)
+ * @param cls closure
+ * @param peer peer identity this notification is about
*/
-void
-GDS_NEIGHBOURS_handle_get (enum GNUNET_BLOCK_Type type,
- 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)
+static void
+handle_core_connect (void *cls, const struct GNUNET_PeerIdentity *peer)
{
- unsigned int target_count;
- unsigned int i;
- struct PeerInfo **targets;
- struct PeerInfo *target;
- struct P2PPendingMessage *pending;
- size_t msize;
- struct PeerGetMessage *pgm;
- char *xq;
- size_t reply_bf_size;
- struct GNUNET_HashCode thash;
-
- 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)
- {
- 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));
+ /*When a peer is connected, then add it to your friend_peers map.
+ Also, start an asynchronous method to look for your fingers that you can
+ reach whenever you get the first connection to the peer. Also try to
+ reach to your predecessor. */
+
+ struct FriendInfo *ret;
+ struct GNUNET_HashCode phash;
+
+ /* Check for connect to self message */
+ if (0 == memcmp (&my_identity, peer, sizeof (struct GNUNET_PeerIdentity)))
return;
- }
- 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_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Connected to %s\n",
+ GNUNET_i2s (peer));
+
+ if (GNUNET_YES ==
+ GNUNET_CONTAINER_multipeermap_contains (friend_peers,
+ peer))
{
GNUNET_break (0);
- GNUNET_free (targets);
return;
}
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# GET messages queued for transmission"),
- target_count, GNUNET_NO);
- /* forward request */
- for (i = 0; i < target_count; i++)
- {
- target = targets[i];
- if (target->pending_count >= MAXIMUM_PENDING_PER_PEER)
- {
- GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# P2P messages dropped due to full queue"),
- 1, GNUNET_NO);
- continue; /* skip */
- }
- 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];
- pending->msg = &pgm->header;
- pgm->header.size = htons (msize);
- pgm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_GET);
- pgm->options = htonl (options);
- pgm->type = htonl (type);
- 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_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));
- 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);
- target->pending_count++;
- process_peer_queue (target);
- }
- GNUNET_free (targets);
+
+ GNUNET_STATISTICS_update (GDS_stats, gettext_noop ("# peers connected"), 1,
+ GNUNET_NO);
+ GNUNET_CRYPTO_hash (peer,
+ sizeof (struct GNUNET_PeerIdentity),
+ &phash);
+
+ ret = GNUNET_new (struct FriendInfo);
+ ret->id = *peer;
+
+ GNUNET_assert (GNUNET_OK ==
+ GNUNET_CONTAINER_multipeermap_put (friend_peers,
+ peer, ret,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
+
+ /* got a first connection, good time to start with FIND TRAIL TO FINGER requests... */
+ if (1 == GNUNET_CONTAINER_multipeermap_size(friend_peers))
+ find_finger_trail_task = GNUNET_SCHEDULER_add_now (&send_find_finger_trail_message, NULL);
}
/**
- * Handle a reply (route to origin). Only forwards the reply back to
- * the given peer. Does not do local caching or forwarding to local
- * clients.
+ * Method called whenever a peer disconnects.
*
- * @param target neighbour that should receive the block (if still connected)
- * @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 @a put_path
- * @param put_path peers the original PUT traversed (if tracked)
- * @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 @a data
+ * @param cls closure
+ * @param peer peer identity this notification is about
*/
-void
-GDS_NEIGHBOURS_handle_reply (const struct GNUNET_PeerIdentity *target,
- 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)
+static void
+handle_core_disconnect (void *cls,
+ const struct GNUNET_PeerIdentity *peer)
{
- 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))
- {
- GNUNET_break (0);
- return;
- }
- pi = GNUNET_CONTAINER_multipeermap_get (all_known_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
- ("# 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];
- pending->msg = &prm->header;
- prm->header.size = htons (msize);
- prm->header.type = htons (GNUNET_MESSAGE_TYPE_DHT_P2P_RESULT);
- prm->type = htonl (type);
- prm->put_path_length = htonl (put_path_length);
- 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);
- pi->pending_count++;
- process_peer_queue (pi);
}
@@ -1605,251 +868,17 @@ 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;
- const void *payload;
- uint32_t putlen;
- uint16_t msize;
- size_t payload_size;
- enum GNUNET_DHT_RouteOption options;
- struct GNUNET_CONTAINER_BloomFilter *bf;
- struct GNUNET_HashCode test_key;
- struct GNUNET_HashCode phash;
-
- msize = ntohs (message->size);
- if (msize < sizeof (struct PeerPutMessage))
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- 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;
- }
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# P2P PUT requests received"), 1,
- GNUNET_NO);
- GNUNET_STATISTICS_update (GDS_stats,
- 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));
- 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,
- "XDHT 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 (struct GNUNET_HashCode)))
- {
- char *put_s = GNUNET_strdup (GNUNET_h2s (&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 (&test_key));
- GNUNET_free (put_s);
- return GNUNET_YES;
- }
- break;
- case GNUNET_NO:
- GNUNET_break_op (0);
- return GNUNET_YES;
- case GNUNET_SYSERR:
- /* cannot verify, good luck */
- break;
- }
- if (ntohl (put->type) == GNUNET_BLOCK_TYPE_REGEX) /* FIXME: do for all tpyes */
- {
- switch (GNUNET_BLOCK_evaluate (GDS_block_context,
- ntohl (put->type),
- 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))
- {
- memcpy (pp, put_path, putlen * sizeof (struct GNUNET_PeerIdentity));
- pp[putlen] = *peer;
- putlen++;
- }
- 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);
- /* 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);
- /* 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), bf, &put->key, putlen,
- pp, payload, payload_size);
- /* notify monitoring clients */
- GDS_CLIENTS_process_put (options,
- 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;
-}
-
-
-/**
- * We have received a FIND PEER request. Send matching
- * HELLOs back.
- *
- * @param sender sender of the FIND PEER request
- * @param key peers close to this key are desired
- * @param bf peers matching this bf are excluded
- * @param bf_mutator mutator for bf
- */
-static void
-handle_find_peer (const struct GNUNET_PeerIdentity *sender,
- 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;
- 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_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
- (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);
- }
- }
- else
- {
- GNUNET_STATISTICS_update (GDS_stats,
- 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_hash, key, sizeof (struct GNUNET_HashCode)))
- bucket_idx = closest_bucket;
- else
- bucket_idx = GNUNET_MIN (closest_bucket, find_bucket (key));
- if (bucket_idx == GNUNET_SYSERR)
- return;
- bucket = &k_buckets[bucket_idx];
- if (bucket->peers_size == 0)
- return;
- choice =
- GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, bucket->peers_size);
- peer = bucket->head;
- while (choice > 0)
- {
- 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_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));
+ /**
+ 1. Search the friend,finger and check your own id to find the closest
+ * predecessor the given key.
+ 2. If self then datache_store
+ 3. If friend, then add to peer queue
+ 4. If finger, then add to the peer queue of the first hop.Again the
+ * same doubt,how does a peer when it is in handle_dht_p2p_put makes
+ * a distinction weather it should do a lookup in routing table or finger or
+ * friend table.
+ */
+ return 0;
}
@@ -1866,134 +895,7 @@ static int
handle_dht_p2p_get (void *cls, const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_MessageHeader *message)
{
- struct PeerGetMessage *get;
- uint32_t xquery_size;
- size_t reply_bf_size;
- uint16_t msize;
- enum GNUNET_BLOCK_Type type;
- enum GNUNET_DHT_RouteOption options;
- enum GNUNET_BLOCK_EvaluationResult eval;
- struct GNUNET_CONTAINER_BloomFilter *reply_bf;
- struct GNUNET_CONTAINER_BloomFilter *peer_bf;
- const char *xquery;
- struct GNUNET_HashCode phash;
-
- 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;
- }
- get = (struct PeerGetMessage *) message;
- xquery_size = ntohl (get->xquery_size);
- if (msize < sizeof (struct PeerGetMessage) + xquery_size)
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- reply_bf_size = msize - (sizeof (struct PeerGetMessage) + xquery_size);
- type = ntohl (get->type);
- options = ntohl (get->options);
- 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,
- "XDHT 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);
- if (eval != GNUNET_BLOCK_EVALUATION_REQUEST_VALID)
- {
- /* request invalid or block type not supported */
- GNUNET_break_op (eval == GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED);
- if (NULL != reply_bf)
- GNUNET_CONTAINER_bloomfilter_free (reply_bf);
- 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,
- &phash));
- /* remember request for routing replies */
- 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_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);
- }
- else
- {
- 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);
- }
-
- GDS_CLIENTS_process_get (options,
- type,
- ntohl(get->hop_count),
- ntohl(get->desired_replication_level),
- 0, NULL,
- &get->key);
-
- /* P2P forwarding */
- if (eval != GNUNET_BLOCK_EVALUATION_OK_LAST)
- 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);
- /* clean up */
- if (NULL != reply_bf)
- GNUNET_CONTAINER_bloomfilter_free (reply_bf);
- GNUNET_CONTAINER_bloomfilter_free (peer_bf);
- return GNUNET_YES;
+ return 0;
}
@@ -2009,184 +911,106 @@ static int
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;
- const struct GNUNET_PeerIdentity *get_path;
- const void *data;
- uint32_t get_path_length;
- uint32_t put_path_length;
- 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))
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- 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)))
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- 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));
- 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;
+ return 0;
+}
- tmp = GNUNET_strdup (GNUNET_i2s (&my_identity));
- LOG_TRAFFIC (GNUNET_ERROR_TYPE_DEBUG, "XDHT 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)
- {
- const struct GNUNET_MessageHeader *h;
- struct GNUNET_PeerIdentity pid;
- int bucket;
- /* Should be a HELLO, validate and consider using it! */
- if (data_size < sizeof (struct GNUNET_MessageHeader))
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- h = data;
- if (data_size != ntohs (h->size))
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- if (GNUNET_OK !=
- GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *) h, &pid))
- {
- GNUNET_break_op (0);
- return GNUNET_YES;
- }
- if ((GNUNET_YES != disable_try_connect) &&
- 0 != memcmp (&my_identity, &pid, sizeof (struct GNUNET_PeerIdentity)))
- {
- 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) &&
- (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 */
- }
- }
- }
+/**
+ * Read the trail setup message backwards to find which is the next hop to which
+ * it should be send to.
+ * @return
+ */
+//static
+struct GNUNET_PeerIdentity *
+find_next_hop()
+{
+ return NULL;
+}
- /* append 'peer' to 'get_path' */
- {
- struct GNUNET_PeerIdentity xget_path[get_path_length + 1];
-
- 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 */
- 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);
- 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));
+/**
+ * Find the predecessor for given finger_id from the
+ * friend and finger table.
+ * if friend, then just return the friend it
+ * if finger, then return the next hop to forward the packet to.
+ * @return
+ */
+//static
+struct GNUNET_PeerIdentity *
+find_predecessor()
+{
+ return NULL;
+}
- 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);
- }
- return GNUNET_YES;
+/**
+ * Core handler for P2P trail setup message.
+ */
+static int
+handle_dht_p2p_trail_setup()
+{
+ /*
+ * When we get this message from our friend then
+ * 1. Check the destination finger id that the message is looking for.
+ * 2. If my_identity = destination, then create a trail_setup_result message
+ * read the path taken to reach to you. read that list backwards to find which
+ * friend to forward this trailsetupresult to. find_next_hop()
+ * call process_peer_queue() to add trailsetupresult message to peer
+ * 3. If you are not the destination
+ * then call find_predecessor() to find closest finger to our given finger_id
+ * //GDS_ROUTING_ADD
+ * //GDS_ROUTING_FIND
+ *
+ */
+ return 0;
+
}
/**
- * Initialize neighbours subsystem.
+ * Core handle for p2p trail construction result messages.
*
+ * @return
+ */
+static int
+handle_dht_p2p_trail_setup_result()
+{
+ /*
+ Here you got a message that trail is set*/
+ return 0;
+}
+
+
+/**
+ * Initialize neighbours subsystem.
* @return GNUNET_OK on success, GNUNET_SYSERR on error
*/
int
-GDS_NEIGHBOURS_init ()
+GDS_NEIGHBOURS_init()
{
static struct GNUNET_CORE_MessageHandler core_handlers[] = {
{&handle_dht_p2p_get, GNUNET_MESSAGE_TYPE_DHT_P2P_GET, 0},
{&handle_dht_p2p_put, GNUNET_MESSAGE_TYPE_DHT_P2P_PUT, 0},
{&handle_dht_p2p_result, GNUNET_MESSAGE_TYPE_DHT_P2P_RESULT, 0},
+ {&handle_dht_p2p_trail_setup, GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_SETUP, 0},
+ {&handle_dht_p2p_trail_setup_result, GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_SETUP_RESULT, 0},
{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;
- 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;
+
atsAPI = GNUNET_ATS_performance_init (GDS_cfg, NULL, NULL);
core_api =
- GNUNET_CORE_connect (GDS_cfg, NULL, &core_init, &handle_core_connect,
+ 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_multipeermap_create (256, GNUNET_NO);
+
+ friend_peers = GNUNET_CONTAINER_multipeermap_create (256, GNUNET_NO);
+ finger_peers = GNUNET_CONTAINER_multipeermap_create (256, GNUNET_NO);
+
+
return GNUNET_OK;
+
}
@@ -2202,16 +1026,23 @@ GDS_NEIGHBOURS_done ()
core_api = NULL;
GNUNET_ATS_performance_done (atsAPI);
atsAPI = NULL;
- GNUNET_assert (0 == GNUNET_CONTAINER_multipeermap_size (all_known_peers));
- GNUNET_CONTAINER_multipeermap_destroy (all_known_peers);
- all_known_peers = NULL;
- if (GNUNET_SCHEDULER_NO_TASK != find_peer_task)
+
+ GNUNET_assert (0 == GNUNET_CONTAINER_multipeermap_size (friend_peers));
+ GNUNET_CONTAINER_multipeermap_destroy (friend_peers);
+ friend_peers = NULL;
+
+ GNUNET_assert (0 == GNUNET_CONTAINER_multipeermap_size (finger_peers));
+ GNUNET_CONTAINER_multipeermap_destroy (finger_peers);
+ finger_peers = NULL;
+
+ if (GNUNET_SCHEDULER_NO_TASK != find_finger_trail_task)
{
- GNUNET_SCHEDULER_cancel (find_peer_task);
- find_peer_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_SCHEDULER_cancel (find_finger_trail_task);
+ find_finger_trail_task = GNUNET_SCHEDULER_NO_TASK;
}
}
+
/**
* Get the ID of the local node.
*
@@ -2224,4 +1055,4 @@ GDS_NEIGHBOURS_get_id ()
}
-/* end of gnunet-service-dht_neighbours.c */
+/* end of gnunet-service-xdht_neighbours.c */ \ No newline at end of file
diff --git a/src/dht/gnunet-service-xdht_neighbours.h b/src/dht/gnunet-service-xdht_neighbours.h
index a059d80fc..615db9198 100644
--- a/src/dht/gnunet-service-xdht_neighbours.h
+++ b/src/dht/gnunet-service-xdht_neighbours.h
@@ -32,94 +32,6 @@
#include "gnunet_dht_service.h"
/**
- * Perform a PUT operation. Forwards the given request to other
- * peers. Does not store the data locally. Does not give the
- * data to local clients. May do nothing if this is the only
- * peer in the network (or if we are the closest peer in the
- * network).
- *
- * @param type type of the block
- * @param options routing options
- * @param desired_replication_level desired replication level
- * @param expiration_time when does the content expire
- * @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 peers this request has traversed so far (if tracked)
- * @param data payload to store
- * @param data_size number of bytes in data
- */
-void
-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 struct GNUNET_HashCode * key,
- unsigned int put_path_length,
- struct GNUNET_PeerIdentity *put_path,
- const void *data, size_t data_size);
-
-
-/**
- * Perform a GET operation. Forwards the given request to other
- * peers. Does not lookup the key locally. May do nothing if this is
- * the only peer in the network (or if we are the closest peer in the
- * network).
- *
- * @param type type of the block
- * @param options routing options
- * @param desired_replication_level desired replication count
- * @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 reply_bf bloomfilter to filter duplicates
- * @param reply_bf_mutator mutator for reply_bf
- * @param peer_bf filter for peers not to select (again, updated)
- */
-void
-GDS_NEIGHBOURS_handle_get (enum GNUNET_BLOCK_Type type,
- 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);
-
-
-/**
- * Handle a reply (route to origin). Only forwards the reply back to
- * other peers waiting for it. Does not do local caching or
- * forwarding to local clients.
- *
- * @param target neighbour that should receive the block (if still connected)
- * @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 peers the original PUT traversed (if tracked)
- * @param get_path_length number of entries in put_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
- */
-void
-GDS_NEIGHBOURS_handle_reply (const struct GNUNET_PeerIdentity *target,
- 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);
-
-
-/**
* Initialize neighbours subsystem.
*
* @return GNUNET_OK on success, GNUNET_SYSERR on error
@@ -144,4 +56,4 @@ struct GNUNET_PeerIdentity *
GDS_NEIGHBOURS_get_id ();
-#endif
+#endif \ No newline at end of file
diff --git a/src/dht/gnunet-service-xdht_routing.c b/src/dht/gnunet-service-xdht_routing.c
index 83568e237..66ab88eb4 100644
--- a/src/dht/gnunet-service-xdht_routing.c
+++ b/src/dht/gnunet-service-xdht_routing.c
@@ -21,14 +21,17 @@
/**
* @file dht/gnunet-service-xdht_routing.c
* @brief GNUnet DHT tracking of requests for routing replies
- * @author Christian Grothoff
+ * @author Supriti Singh
*/
#include "platform.h"
#include "gnunet-service-xdht_neighbours.h"
#include "gnunet-service-xdht_routing.h"
#include "gnunet-service-xdht.h"
-
+/* FIXME
+ * 1. We need field to understand which routing table is for which peer.
+ * 2. Better function names and variable names.
+ */
/**
* Number of requests we track at most (for routing replies).
*/
@@ -36,223 +39,81 @@
/**
- * Information we keep about all recent GET requests
- * so that we can route replies.
+ * Routing table entry .
*/
-struct RecentRequest
+struct RoutingTrail
{
-
- /**
- * The peer this request was received from.
- */
- struct GNUNET_PeerIdentity peer;
-
- /**
- * Key of this request.
- */
- struct GNUNET_HashCode key;
-
- /**
- * Position of this node in the min heap.
- */
- struct GNUNET_CONTAINER_HeapNode *heap_node;
-
- /**
- * Bloomfilter for replies to drop.
- */
- struct GNUNET_CONTAINER_BloomFilter *reply_bf;
-
- /**
- * Type of the requested block.
- */
- enum GNUNET_BLOCK_Type type;
-
- /**
- * extended query (see gnunet_block_lib.h). Allocated at the
- * end of this struct.
- */
- const void *xquery;
-
- /**
- * Number of bytes in xquery.
- */
- size_t xquery_size;
-
- /**
- * Mutator value for the reply_bf, see gnunet_block_lib.h
- */
- uint32_t reply_bf_mutator;
-
- /**
- * Request options.
- */
- enum GNUNET_DHT_RouteOption options;
-
+ /**
+ * Source peer .
+ */
+ struct GNUNET_PeerIdentity endpoint1;
+
+ /**
+ * Destination peer.
+ */
+ struct GNUNET_PeerIdentity endppoint2;
+
+ /**
+ * The peer this request was received from.
+ */
+ struct GNUNET_PeerIdentity previous_hop;
+
+ /**
+ * The peer to which this request should be passed to.
+ */
+ struct GNUNET_PeerIdentity next_hop;
};
/**
- * Recent requests by time inserted.
+ * Routing table of the peer
*/
-static struct GNUNET_CONTAINER_Heap *recent_heap;
-
-/**
- * Recently seen requests by key.
- */
-static struct GNUNET_CONTAINER_MultiHashMap *recent_map;
+static struct GNUNET_CONTAINER_MultiPeerMap *routing_table;
/**
- * Closure for the 'process' function.
+ * Find the next hop to pass the message to .
+ * @return
*/
-struct ProcessContext
-{
- /**
- * Path of the original PUT
- */
- const struct GNUNET_PeerIdentity *put_path;
-
- /**
- * Path of the reply.
- */
- const struct GNUNET_PeerIdentity *get_path;
-
- /**
- * Payload of the reply.
- */
- const void *data;
+//static struct GNUNET_PeerIdentity *
+//find_next_hop()
+//{
+
+//}
- /**
- * Expiration time of the result.
- */
- struct GNUNET_TIME_Absolute expiration_time;
-
- /**
- * Number of entries in 'put_path'.
- */
- unsigned int put_path_length;
-
- /**
- * Number of entries in 'get_path'.
- */
- unsigned int get_path_length;
-
- /**
- * Number of bytes in 'data'.
- */
- size_t data_size;
-
- /**
- * Type of the reply.
- */
- enum GNUNET_BLOCK_Type type;
-
-};
/**
- * Forward the result to the given peer if it matches the request.
+ * Add a new entry to our routing table.
*
- * @param cls the `struct ProcessContext` with the result
- * @param key the query
- * @param value the `struct RecentRequest` with the request
- * @return #GNUNET_OK (continue to iterate),
- * #GNUNET_SYSERR if the result is malformed or type unsupported
+ * @param sender peer that originated the request
+ * @param type type of the block
+ * @param options options for processing
+ * @param key key for the content
+ * @param xquery extended query
+ * @param xquery_size number of bytes in @a xquery
+ * @param reply_bf bloomfilter to filter duplicates
+ * @param reply_bf_mutator mutator for @a reply_bf
*/
-static int
-process (void *cls, const struct GNUNET_HashCode * key, void *value)
+void
+GDS_ROUTING_add (const struct GNUNET_PeerIdentity *sender,
+ enum GNUNET_BLOCK_Type type,
+ enum GNUNET_DHT_RouteOption options,
+ 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 ProcessContext *pc = cls;
- struct RecentRequest *rr = value;
- enum GNUNET_BLOCK_EvaluationResult eval;
- unsigned int gpl;
- unsigned int ppl;
- struct GNUNET_HashCode hc;
- const struct GNUNET_HashCode *eval_key;
-
- if ((rr->type != GNUNET_BLOCK_TYPE_ANY) && (rr->type != pc->type))
- return GNUNET_OK; /* type missmatch */
- if (0 != (rr->options & GNUNET_DHT_RO_RECORD_ROUTE))
- {
- gpl = pc->get_path_length;
- ppl = pc->put_path_length;
- }
- else
- {
- gpl = 0;
- ppl = 0;
- }
- if ((0 != (rr->options & GNUNET_DHT_RO_FIND_PEER)) &&
- (pc->type == GNUNET_BLOCK_TYPE_DHT_HELLO))
- {
- /* key may not match HELLO, which is OK since
- * the search is approximate. Still, the evaluation
- * would fail since the match is not exact. So
- * we fake it by changing the key to the actual PID ... */
- GNUNET_BLOCK_get_key (GDS_block_context, GNUNET_BLOCK_TYPE_DHT_HELLO,
- pc->data, pc->data_size, &hc);
- eval_key = &hc;
- }
- else
- {
- eval_key = key;
- }
- eval =
- GNUNET_BLOCK_evaluate (GDS_block_context, pc->type, eval_key,
- &rr->reply_bf, rr->reply_bf_mutator, rr->xquery,
- rr->xquery_size, pc->data, pc->data_size);
- switch (eval)
- {
- case GNUNET_BLOCK_EVALUATION_OK_MORE:
- case GNUNET_BLOCK_EVALUATION_OK_LAST:
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Good REPLIES matched against routing table"),
- 1, GNUNET_NO);
- GDS_NEIGHBOURS_handle_reply (&rr->peer, pc->type, pc->expiration_time, key,
- ppl, pc->put_path, gpl, pc->get_path, pc->data,
- pc->data_size);
- break;
- case GNUNET_BLOCK_EVALUATION_OK_DUPLICATE:
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Duplicate REPLIES matched against routing table"),
- 1, GNUNET_NO);
- return GNUNET_OK;
- case GNUNET_BLOCK_EVALUATION_RESULT_INVALID:
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Invalid REPLIES matched against routing table"),
- 1, GNUNET_NO);
- return GNUNET_SYSERR;
- case GNUNET_BLOCK_EVALUATION_RESULT_IRRELEVANT:
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Irrelevant REPLIES matched against routing table"),
- 1, GNUNET_NO);
- return GNUNET_OK;
- case GNUNET_BLOCK_EVALUATION_REQUEST_VALID:
- GNUNET_break (0);
- return GNUNET_OK;
- case GNUNET_BLOCK_EVALUATION_REQUEST_INVALID:
- GNUNET_break (0);
- return GNUNET_OK;
- case GNUNET_BLOCK_EVALUATION_TYPE_NOT_SUPPORTED:
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Unsupported REPLIES matched against routing table"),
- 1, GNUNET_NO);
- return GNUNET_SYSERR;
- default:
- GNUNET_break (0);
- return GNUNET_SYSERR;
- }
- return GNUNET_OK;
}
+/* search in routing table for next hop to pass the message to .
+ * struct GNUNET_PeerIdentity *
+GDS_Routing_search()
+{
+}*/
-/**
+/**FIXME: Old implementation just to remove error
* Handle a reply (route to origin). Only forwards the reply back to
* other peers waiting for it. Does not do local caching or
* forwarding to local clients. Essentially calls
@@ -278,164 +139,14 @@ GDS_ROUTING_process (enum GNUNET_BLOCK_Type type,
const struct GNUNET_PeerIdentity *get_path,
const void *data, size_t data_size)
{
- struct ProcessContext pc;
-
- pc.type = type;
- pc.expiration_time = expiration_time;
- pc.put_path_length = put_path_length;
- pc.put_path = put_path;
- pc.get_path_length = get_path_length;
- pc.get_path = get_path;
- pc.data = data;
- pc.data_size = data_size;
- if (NULL == data)
- {
- /* Some apps might have an 'empty' reply as a valid reply; however,
- 'process' will call GNUNET_BLOCK_evaluate' which treats a 'NULL'
- reply as request-validation (but we need response-validation).
- So we set 'data' to a 0-byte non-NULL value just to be sure */
- GNUNET_break (0 == data_size);
- pc.data_size = 0;
- pc.data = ""; /* something not null */
- }
- GNUNET_CONTAINER_multihashmap_get_multiple (recent_map, key, &process, &pc);
}
-
-
-/**
- * Remove the oldest entry from the DHT routing table. Must only
- * be called if it is known that there is at least one entry
- * in the heap and hashmap.
- */
-static void
-expire_oldest_entry ()
-{
- struct RecentRequest *recent_req;
-
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# Entries removed from routing table"), 1,
- GNUNET_NO);
- recent_req = GNUNET_CONTAINER_heap_peek (recent_heap);
- GNUNET_assert (recent_req != NULL);
- GNUNET_CONTAINER_heap_remove_node (recent_req->heap_node);
- GNUNET_CONTAINER_bloomfilter_free (recent_req->reply_bf);
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (recent_map,
- &recent_req->key,
- recent_req));
- GNUNET_free (recent_req);
-}
-
-
-/**
- * Try to combine multiple recent requests for the same value
- * (if they come from the same peer).
- *
- * @param cls the new 'struct RecentRequest' (to discard upon successful combination)
- * @param key the query
- * @param value the existing 'struct RecentRequest' (to update upon successful combination)
- * @return GNUNET_OK (continue to iterate),
- * GNUNET_SYSERR if the request was successfully combined
- */
-static int
-try_combine_recent (void *cls, const struct GNUNET_HashCode * key, void *value)
-{
- struct RecentRequest *in = cls;
- struct RecentRequest *rr = value;
-
- if ( (0 != memcmp (&in->peer,
- &rr->peer,
- sizeof (struct GNUNET_PeerIdentity))) ||
- (in->type != rr->type) ||
- (in->xquery_size != rr->xquery_size) ||
- (0 != memcmp (in->xquery,
- rr->xquery,
- in->xquery_size)) )
- return GNUNET_OK;
- if (in->reply_bf_mutator != rr->reply_bf_mutator)
- {
- rr->reply_bf_mutator = in->reply_bf_mutator;
- GNUNET_CONTAINER_bloomfilter_free (rr->reply_bf);
- rr->reply_bf = in->reply_bf;
- }
- else
- {
- GNUNET_CONTAINER_bloomfilter_or2 (rr->reply_bf,
- in->reply_bf);
- GNUNET_CONTAINER_bloomfilter_free (in->reply_bf);
- }
- GNUNET_free (in);
- return GNUNET_SYSERR;
-}
-
-
-/**
- * Add a new entry to our routing table.
- *
- * @param sender peer that originated the request
- * @param type type of the block
- * @param options options for processing
- * @param key key for the content
- * @param xquery extended query
- * @param xquery_size number of bytes in @a xquery
- * @param reply_bf bloomfilter to filter duplicates
- * @param reply_bf_mutator mutator for @a reply_bf
- */
-void
-GDS_ROUTING_add (const struct GNUNET_PeerIdentity *sender,
- enum GNUNET_BLOCK_Type type,
- enum GNUNET_DHT_RouteOption options,
- 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 RecentRequest *recent_req;
-
- while (GNUNET_CONTAINER_heap_get_size (recent_heap) >= DHT_MAX_RECENT)
- expire_oldest_entry ();
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop ("# Entries added to routing table"),
- 1, GNUNET_NO);
- recent_req = GNUNET_malloc (sizeof (struct RecentRequest) + xquery_size);
- recent_req->peer = *sender;
- recent_req->key = *key;
- recent_req->reply_bf = GNUNET_CONTAINER_bloomfilter_copy (reply_bf);
- recent_req->type = type;
- recent_req->options = options;
- recent_req->xquery = &recent_req[1];
- memcpy (&recent_req[1], xquery, xquery_size);
- recent_req->xquery_size = xquery_size;
- recent_req->reply_bf_mutator = reply_bf_mutator;
- if (GNUNET_SYSERR ==
- GNUNET_CONTAINER_multihashmap_get_multiple (recent_map, key,
- &try_combine_recent, recent_req))
- {
- GNUNET_STATISTICS_update (GDS_stats,
- gettext_noop
- ("# DHT requests combined"),
- 1, GNUNET_NO);
- return;
- }
- recent_req->heap_node =
- GNUNET_CONTAINER_heap_insert (recent_heap, recent_req,
- GNUNET_TIME_absolute_get ().abs_value_us);
- GNUNET_CONTAINER_multihashmap_put (recent_map, key, recent_req,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
-
-
-}
-
-
/**
* Initialize routing subsystem.
*/
void
GDS_ROUTING_init ()
{
- recent_heap = GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN);
- recent_map = GNUNET_CONTAINER_multihashmap_create (DHT_MAX_RECENT * 4 / 3, GNUNET_NO);
+ routing_table = GNUNET_CONTAINER_multipeermap_create (DHT_MAX_RECENT * 4 / 3, GNUNET_NO);
}
@@ -445,14 +156,8 @@ GDS_ROUTING_init ()
void
GDS_ROUTING_done ()
{
- while (GNUNET_CONTAINER_heap_get_size (recent_heap) > 0)
- expire_oldest_entry ();
- GNUNET_assert (0 == GNUNET_CONTAINER_heap_get_size (recent_heap));
- GNUNET_CONTAINER_heap_destroy (recent_heap);
- recent_heap = NULL;
- GNUNET_assert (0 == GNUNET_CONTAINER_multihashmap_size (recent_map));
- GNUNET_CONTAINER_multihashmap_destroy (recent_map);
- recent_map = NULL;
+ GNUNET_assert (0 == GNUNET_CONTAINER_multipeermap_size (routing_table));
+ GNUNET_CONTAINER_multipeermap_destroy (routing_table);
}
-/* end of gnunet-service-dht_routing.c */
+/* end of gnunet-service-xdht_routing.c */ \ No newline at end of file
diff --git a/src/dht/gnunet-service-xdht_routing.h b/src/dht/gnunet-service-xdht_routing.h
index 25605dcb4..a6c3281e9 100644
--- a/src/dht/gnunet-service-xdht_routing.h
+++ b/src/dht/gnunet-service-xdht_routing.h
@@ -32,33 +32,6 @@
/**
- * Handle a reply (route to origin). Only forwards the reply back to
- * other peers waiting for it. Does not do local caching or
- * forwarding to local clients. Essentially calls
- * GDS_NEIGHBOURS_handle_reply for all peers that sent us a matching
- * request recently.
- *
- * @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 @a put_path
- * @param put_path peers the original PUT traversed (if tracked)
- * @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 @a data
- */
-void
-GDS_ROUTING_process (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);
-
-
-/**
* Add a new entry to our routing table.
*
* @param sender peer that originated the request
@@ -80,6 +53,7 @@ GDS_ROUTING_add (const struct GNUNET_PeerIdentity *sender,
uint32_t reply_bf_mutator);
+
/**
* Initialize routing subsystem.
*/
diff --git a/src/dht/test_dht_api.c b/src/dht/test_dht_api.c
index 2295866d3..5c6913740 100644
--- a/src/dht/test_dht_api.c
+++ b/src/dht/test_dht_api.c
@@ -203,6 +203,7 @@ run (void *cls,
(GNUNET_TIME_UNIT_MINUTES, 1), &end_badly,
NULL);
+
memset (&hash, 42, sizeof (struct GNUNET_HashCode));
data = GNUNET_malloc (data_size);
memset (data, 43, data_size);
diff --git a/src/include/gnunet_common.h b/src/include/gnunet_common.h
index e4423f145..2a0ca33b2 100644
--- a/src/include/gnunet_common.h
+++ b/src/include/gnunet_common.h
@@ -376,7 +376,7 @@ GNUNET_log_from_nocheck (enum GNUNET_ErrorType kind, const char *comp,
}\
} while (0)
-#define GNUNET_log(kind,...) do { int log_line = __LINE__;\
+ #define GNUNET_log(kind,...) do { int log_line = __LINE__;\
static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
if ((GNUNET_EXTRA_LOGGING > 0) || ((GNUNET_ERROR_TYPE_DEBUG & (kind)) == 0)) { \
if (GN_UNLIKELY(log_call_enabled == -1))\
diff --git a/src/include/gnunet_protocols.h b/src/include/gnunet_protocols.h
index ee8a1272c..2a69e3029 100644
--- a/src/include/gnunet_protocols.h
+++ b/src/include/gnunet_protocols.h
@@ -606,6 +606,15 @@ extern "C"
*/
#define GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET_RESULTS_KNOWN 156
+/**
+ * Trail setup request is received by a peer.
+ */
+#define GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_SETUP 157
+
+/**
+ * Trail to a particular peer is returned to this peer.
+ */
+#define GNUNET_MESSAGE_TYPE_DHT_P2P_TRAIL_SETUP_RESULT 158
/*******************************************************************************
* HOSTLIST message types
diff --git a/src/statistics/test_statistics_api_data.conf b/src/statistics/test_statistics_api_data.conf
index 572f51d71..e458f08bf 100644
--- a/src/statistics/test_statistics_api_data.conf
+++ b/src/statistics/test_statistics_api_data.conf
@@ -1,6 +1,7 @@
[PATHS]
GNUNET_TEST_HOME = /tmp/test-gnunet-statistics/
+
[statistics]
PORT = 22353
UNIXPATH = $GNUNET_RUNTIME_DIR/test-statistics-service-statistics.unix