/*
This file is part of GNUnet.
- (C) 2009, 2010 Christian Grothoff (and other contributing authors)
+ (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
* @brief high-level P2P messaging
* @author Christian Grothoff
*
- * Type map implementation:
- * - track type maps for neighbours (can wait)
- * - only notify clients about peers with matching type maps (can wait)
- *
- * Considerations for later:
- * - check that hostkey used by transport (for HELLOs) is the
- * same as the hostkey that we are using!
+ * Not implemented:
+ * - peer status changes (PeerStatusNotifyMessage) [needed?]
+ * - ATS integration / bw allocation / preferences
*/
#include "platform.h"
-#include <zlib.h>
-#include "gnunet_constants.h"
#include "gnunet_util_lib.h"
-#include "gnunet_hello_lib.h"
-#include "gnunet_peerinfo_service.h"
-#include "gnunet_protocols.h"
-#include "gnunet_signatures.h"
-#include "gnunet_statistics_service.h"
-#include "gnunet_transport_service.h"
-#include "core.h"
-
-
-#define DEBUG_HANDSHAKE GNUNET_EXTRA_LOGGING
-
-#define DEBUG_CORE_QUOTA GNUNET_EXTRA_LOGGING
-
-/**
- * Receive and send buffer windows grow over time. For
- * how long can 'unused' bandwidth accumulate before we
- * need to cap it? (specified in seconds).
- */
-#define MAX_WINDOW_TIME_S (5 * 60)
-
-/**
- * How many messages do we queue up at most for optional
- * notifications to a client? (this can cause notifications
- * about outgoing messages to be dropped).
- */
-#define MAX_NOTIFY_QUEUE 1024
-
-/**
- * Minimum bandwidth (out) to assign to any connected peer.
- * Should be rather low; values larger than DEFAULT_BW_IN_OUT make no
- * sense.
- */
-#define MIN_BANDWIDTH_PER_PEER GNUNET_CONSTANTS_DEFAULT_BW_IN_OUT
-
-/**
- * After how much time past the "official" expiration time do
- * we discard messages? Should not be zero since we may
- * intentionally defer transmission until close to the deadline
- * and then may be slightly past the deadline due to inaccuracy
- * in sleep and our own CPU consumption.
- */
-#define PAST_EXPIRATION_DISCARD_TIME GNUNET_TIME_UNIT_SECONDS
-
-/**
- * What is the maximum delay for a SET_KEY message?
- */
-#define MAX_SET_KEY_DELAY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10)
-
-/**
- * How long do we wait for SET_KEY confirmation initially?
- */
-#define INITIAL_SET_KEY_RETRY_FREQUENCY GNUNET_TIME_relative_multiply (MAX_SET_KEY_DELAY, 1)
-
-/**
- * What is the maximum delay for a PING message?
- */
-#define MAX_PING_DELAY GNUNET_TIME_relative_multiply (MAX_SET_KEY_DELAY, 2)
-
-/**
- * What is the maximum delay for a PONG message?
- */
-#define MAX_PONG_DELAY GNUNET_TIME_relative_multiply (MAX_PING_DELAY, 2)
-
-/**
- * What is the minimum frequency for a PING message?
- */
-#define MIN_PING_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
-
-/**
- * How often do we recalculate bandwidth quotas?
- */
-#define QUOTA_UPDATE_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
-
-/**
- * What is the priority for a SET_KEY message?
- */
-#define SET_KEY_PRIORITY 0xFFFFFF
-
-/**
- * What is the priority for a PING message?
- */
-#define PING_PRIORITY 0xFFFFFF
-
-/**
- * What is the priority for a PONG message?
- */
-#define PONG_PRIORITY 0xFFFFFF
-
-/**
- * How many messages do we queue per peer at most? Must be at
- * least two.
- */
-#define MAX_PEER_QUEUE_SIZE 16
-
-/**
- * How many non-mandatory messages do we queue per client at most?
- */
-#define MAX_CLIENT_QUEUE_SIZE 32
-
-/**
- * What is the maximum age of a message for us to consider
- * processing it? Note that this looks at the timestamp used
- * by the other peer, so clock skew between machines does
- * come into play here. So this should be picked high enough
- * so that a little bit of clock skew does not prevent peers
- * from connecting to us.
- */
-#define MAX_MESSAGE_AGE GNUNET_TIME_UNIT_DAYS
-
-
-/**
- * State machine for our P2P encryption handshake. Everyone starts in
- * "DOWN", if we receive the other peer's key (other peer initiated)
- * we start in state RECEIVED (since we will immediately send our
- * own); otherwise we start in SENT. If we get back a PONG from
- * within either state, we move up to CONFIRMED (the PONG will always
- * be sent back encrypted with the key we sent to the other peer).
- */
-enum PeerStateMachine
-{
- /**
- * No handshake yet.
- */
- PEER_STATE_DOWN,
-
- /**
- * We've sent our session key.
- */
- PEER_STATE_KEY_SENT,
-
- /**
- * We've received the other peers session key.
- */
- PEER_STATE_KEY_RECEIVED,
-
- /**
- * The other peer has confirmed our session key with a message
- * encrypted with his session key (which we got). Session is now fully up.
- */
- PEER_STATE_KEY_CONFIRMED
-};
-
-/**
- * Number of bytes (at the beginning) of "struct EncryptedMessage"
- * that are NOT encrypted.
- */
-#define ENCRYPTED_HEADER_SIZE (offsetof(struct EncryptedMessage, sequence_number))
+#include "gnunet-service-core.h"
+#include "gnunet-service-core_clients.h"
+#include "gnunet-service-core_kx.h"
+#include "gnunet-service-core_neighbours.h"
+#include "gnunet-service-core_sessions.h"
+#include "gnunet-service-core_typemap.h"
/**
struct GNUNET_STATISTICS_Handle *GSC_stats;
-
-
-
/**
* Last task run during shutdown. Disconnects us from
* the transport.
cleaning_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
#if DEBUG_CORE
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Core service shutting down.\n");
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Core service shutting down.\n");
#endif
- if (stats != NULL)
- GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
+ GSC_CLIENTS_done ();
+ GSC_SESSIONS_done ();
+ GSC_NEIGHBOURS_done ();
+ GSC_KX_done ();
+ GSC_TYPEMAP_done ();
+ if (GSC_stats != NULL)
+ {
+ GNUNET_STATISTICS_destroy (GSC_stats, GNUNET_NO);
+ GSC_stats = NULL;
+ }
+ GSC_cfg = NULL;
}
run (void *cls, struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *c)
{
- cfg = c;
- /* setup transport connection */
- stats = GNUNET_STATISTICS_create ("core", cfg);
+ GSC_cfg = c;
+ GSC_stats = GNUNET_STATISTICS_create ("core", GSC_cfg);
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleaning_task,
NULL);
- /* process client requests */
+ GSC_TYPEMAP_init ();
+ if ( (GNUNET_OK != GSC_KX_init ()) ||
+ (GNUNET_OK != GSC_NEIGHBOURS_init ()) )
+ {
+ GNUNET_SCHEDULER_shutdown ();
+ return;
+ }
+ GSC_SESSIONS_init ();
+ GSC_CLIENTS_init (server);
GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Core service of `%4s' ready.\n"),
- GNUNET_i2s (&my_identity));
+ GNUNET_i2s (&GSC_my_identity));
}
projects / oweals / gnunet.git / blobdiff