* @file fs/gnunet-service-fs.c
* @brief gnunet anonymity protocol implementation
* @author Christian Grothoff
- *
- * To use:
- * - consider re-issue GSF_dht_lookup_ after non-DHT reply received
- * - implement 'SUPPORT_DELAYS'
- *
*/
#include "platform.h"
#include <float.h>
#include "gnunet-service-fs_pr.h"
#include "gnunet-service-fs_push.h"
#include "gnunet-service-fs_put.h"
+#include "gnunet-service-fs_stream.h"
#include "fs.h"
/**
*/
#define COVER_AGE_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
+/**
+ * Collect an instane number of statistics? May cause excessive IPC.
+ */
+#define INSANE_STATISTICS GNUNET_NO
+
/* ****************************** globals ****************************** */
*/
struct GNUNET_LOAD_Value *GSF_rt_entry_lifetime;
+/**
+ * Running average of the observed latency to other peers (round trip).
+ * Initialized to 5s as the initial default.
+ */
+struct GNUNET_TIME_Relative GSF_avg_latency = { 500 };
+
/**
* Typical priorities we're seeing from other peers right now. Since
* most priorities will be zero, this value is the weighted average of
*/
double GSF_current_priorities;
+/**
+ * Size of the datastore queue we assume for common requests.
+ */
+unsigned int GSF_datastore_queue_size;
+
/**
* How many query messages have we received 'recently' that
* have not yet been claimed as cover traffic?
}
-
/**
* We've just now completed a datastore request. Update our
* datastore load calculations.
}
+/**
+ * We've received peer performance information. Update
+ * our running average for the P2P latency.
+ *
+ * @param atsi performance information
+ * @param atsi_count number of 'atsi' records
+ */
+static void
+update_latencies (const struct GNUNET_ATS_Information *atsi,
+ unsigned int atsi_count)
+{
+ unsigned int i;
+
+ for (i = 0; i < atsi_count; i++)
+ {
+ if (ntohl (atsi[i].type) == GNUNET_ATS_QUALITY_NET_DELAY)
+ {
+ GSF_avg_latency.rel_value =
+ (GSF_avg_latency.rel_value * 31 +
+ GNUNET_MIN (5000, ntohl (atsi[i].value))) / 32;
+ GNUNET_STATISTICS_set (GSF_stats,
+ gettext_noop
+ ("# running average P2P latency (ms)"),
+ GSF_avg_latency.rel_value, GNUNET_NO);
+ break;
+ }
+ }
+}
+
+
/**
* Handle P2P "PUT" message.
*
handle_p2p_put (void *cls, const struct GNUNET_PeerIdentity *other,
const struct GNUNET_MessageHeader *message,
const struct GNUNET_ATS_Information *atsi,
- unsigned int atsi_count)
+ unsigned int atsi_count)
{
struct GSF_ConnectedPeer *cp;
return GNUNET_OK;
}
GSF_cover_content_count++;
+ update_latencies (atsi, atsi_count);
return GSF_handle_p2p_content_ (cp, message);
}
{
struct GSF_PendingRequest *pr = cls;
- if (GNUNET_YES !=
- GSF_pending_request_test_target_ (pr,
- peer))
+ if (GNUNET_YES != GSF_pending_request_test_target_ (pr, peer))
{
+#if INSANE_STATISTICS
GNUNET_STATISTICS_update (GSF_stats,
- gettext_noop ("# Loopback routes suppressed"), 1,
- GNUNET_NO);
+ gettext_noop ("# Loopback routes suppressed"), 1,
+ GNUNET_NO);
+#endif
return;
}
GSF_plan_add_ (cp, pr);
handle_p2p_get (void *cls, const struct GNUNET_PeerIdentity *other,
const struct GNUNET_MessageHeader *message,
const struct GNUNET_ATS_Information *atsi,
- unsigned int atsi_count)
+ unsigned int atsi_count)
{
struct GSF_PendingRequest *pr;
pr = GSF_handle_p2p_query_ (other, message);
if (NULL == pr)
return GNUNET_SYSERR;
+ GSF_pending_request_get_data_ (pr)->has_started = GNUNET_YES;
GSF_local_lookup_ (pr, &consider_forwarding, NULL);
+ update_latencies (atsi, atsi_count);
return GNUNET_OK;
}
struct GSF_PendingRequestData *prd;
prd = GSF_pending_request_get_data_ (pr);
-#if DEBUG_FS_CLIENT
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"Finished database lookup for local request `%s' with result %d\n",
GNUNET_h2s (&prd->query), result);
-#endif
GNUNET_SERVER_receive_done (client, GNUNET_OK);
if (GNUNET_BLOCK_EVALUATION_OK_LAST == result)
return; /* we're done, 'pr' was already destroyed... */
GSF_pending_request_cancel_ (pr, GNUNET_YES);
return;
}
- GSF_dht_lookup_ (pr);
+ if (0 == prd->anonymity_level)
+ {
+ switch (prd->type)
+ {
+ case GNUNET_BLOCK_TYPE_FS_DBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_IBLOCK:
+ /* the above block types MAY be available via 'stream' */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Considering stream-based download for block\n");
+ GSF_stream_lookup_ (pr);
+ break;
+ case GNUNET_BLOCK_TYPE_FS_KBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_SBLOCK:
+ case GNUNET_BLOCK_TYPE_FS_NBLOCK:
+ /* the above block types are in the DHT */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Considering DHT-based search for block\n");
+ GSF_dht_lookup_ (pr);
+ break;
+ default:
+ GNUNET_break (0);
+ break;
+ }
+ }
consider_forwarding (NULL, pr, result);
}
const struct GNUNET_MessageHeader *message)
{
struct GSF_PendingRequest *pr;
+ int ret;
- pr = GSF_local_client_start_search_handler_ (client, message);
- if (NULL == pr)
+ pr = NULL;
+ ret = GSF_local_client_start_search_handler_ (client, message, &pr);
+ switch (ret)
{
- /* GNUNET_SERVER_receive_done was already called! */
- return;
+ case GNUNET_SYSERR:
+ GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
+ break;
+ case GNUNET_NO:
+ GNUNET_SERVER_receive_done (client, GNUNET_OK);
+ break;
+ case GNUNET_YES:
+ GSF_pending_request_get_data_ (pr)->has_started = GNUNET_YES;
+ GSF_local_lookup_ (pr, &start_p2p_processing, client);
+ break;
+ default:
+ GNUNET_assert (0);
}
- GSF_local_lookup_ (pr, &start_p2p_processing, client);
}
static void
shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+ GSF_stream_stop ();
if (NULL != GSF_core)
{
GNUNET_CORE_disconnect (GSF_core);
* @return GNUNET_YES to continue to iterate
*/
static int
-consider_peer_for_forwarding (void *cls, const GNUNET_HashCode * key,
+consider_peer_for_forwarding (void *cls, const struct GNUNET_HashCode * key,
struct GSF_PendingRequest *pr)
{
struct GSF_ConnectedPeer *cp = cls;
struct GNUNET_PeerIdentity pid;
GSF_connected_peer_get_identity_ (cp, &pid);
- if (GNUNET_YES !=
- GSF_pending_request_test_target_ (pr,
- &pid))
+ if (GNUNET_YES != GSF_pending_request_test_target_ (pr, &pid))
{
GNUNET_STATISTICS_update (GSF_stats,
- gettext_noop ("# Loopback routes suppressed"), 1,
- GNUNET_NO);
+ gettext_noop ("# Loopback routes suppressed"), 1,
+ GNUNET_NO);
return GNUNET_YES;
}
GSF_plan_add_ (cp, pr);
static void
peer_connect_handler (void *cls, const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_ATS_Information *atsi,
- unsigned int atsi_count)
+ unsigned int atsi_count)
{
struct GSF_ConnectedPeer *cp;
main_init (struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
+ static const struct GNUNET_CORE_MessageHandler no_p2p_handlers[] = {
+ {NULL, 0, 0}
+ };
static const struct GNUNET_CORE_MessageHandler p2p_handlers[] = {
{&handle_p2p_get,
GNUNET_MESSAGE_TYPE_FS_GET, 0},
0},
{NULL, NULL, 0, 0}
};
-
- GSF_core = GNUNET_CORE_connect (GSF_cfg, 2, /* larger? */
- NULL, &peer_init_handler,
- &peer_connect_handler,
- &GSF_peer_disconnect_handler_,
- NULL, GNUNET_NO,
- NULL, GNUNET_NO, p2p_handlers);
+ int anon_p2p_off;
+
+ /* this option is really only for testcases that need to disable
+ _anonymous_ file-sharing for some reason */
+ anon_p2p_off = (GNUNET_YES ==
+ GNUNET_CONFIGURATION_get_value_yesno (GSF_cfg,
+ "fs",
+ "DISABLE_ANON_TRANSFER"));
+ GSF_core =
+ GNUNET_CORE_connect (GSF_cfg, NULL, &peer_init_handler,
+ &peer_connect_handler, &GSF_peer_disconnect_handler_,
+ NULL, GNUNET_NO, NULL, GNUNET_NO,
+ (GNUNET_YES == anon_p2p_off)
+ ? no_p2p_handlers
+ : p2p_handlers);
if (NULL == GSF_core)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
GNUNET_SCHEDULER_add_delayed (COVER_AGE_FREQUENCY, &age_cover_counters,
NULL);
datastore_get_load = GNUNET_LOAD_value_init (DATASTORE_LOAD_AUTODECLINE);
+ GSF_stream_start ();
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
NULL);
return GNUNET_OK;
run (void *cls, struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
+ unsigned long long dqs;
+
GSF_cfg = cfg;
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_size (GSF_cfg, "fs", "DATASTORE_QUEUE_SIZE",
+ &dqs))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_INFO,
+ "fs", "DATASTORE_QUEUE_SIZE");
+ dqs = 1024;
+ }
+ GSF_datastore_queue_size = (unsigned int) dqs;
GSF_enable_randomized_delays =
GNUNET_CONFIGURATION_get_value_yesno (cfg, "fs", "DELAY");
GSF_dsh = GNUNET_DATASTORE_connect (cfg);
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