2 This file is part of GNUnet.
3 (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file dht/gnunet-service-xdht_neighbours.h
23 * @brief GNUnet DHT routing code
24 * @author Christian Grothoff
25 * @author Nathan Evans
27 #ifndef GNUNET_SERVICE_XDHT_NEIGHBOURS_H
28 #define GNUNET_SERVICE_XDHT_NEIGHBOURS_H
30 #include "gnunet_util_lib.h"
31 #include "gnunet_block_lib.h"
32 #include "gnunet_dht_service.h"
35 * FIXME: Change the comment to explain about usage of this in find successor.
36 * Field in trail setup message to understand if the message is sent to an
37 * intermediate finger, friend or me.
39 enum current_destination_type
48 * Perform a PUT operation. Forwards the given request to other
49 * peers. Does not store the data locally. Does not give the
50 * data to local clients. May do nothing if this is the only
51 * peer in the network (or if we are the closest peer in the
54 * @param type type of the block
55 * @param options routing options
56 * @param desired_replication_level desired replication count
57 * @param expiration_time when does the content expire
58 * @param hop_count how many hops has this message traversed so far
59 * @param key key for the content
60 * @param put_path_length number of entries in @a put_path
61 * @param put_path peers this request has traversed so far (if tracked)
62 * @param data payload to store
63 * @param data_size number of bytes in @a data
66 GDS_NEIGHBOURS_handle_put (enum GNUNET_BLOCK_Type type,
67 enum GNUNET_DHT_RouteOption options,
68 uint32_t desired_replication_level,
69 struct GNUNET_TIME_Absolute expiration_time,
71 struct GNUNET_HashCode * key,
72 unsigned int put_path_length,
73 struct GNUNET_PeerIdentity *put_path,
74 const void *data, size_t data_size,
75 struct GNUNET_PeerIdentity *current_destination,
76 enum current_destination_type *dest_type,
77 struct GNUNET_PeerIdentity *target_peer_id);
84 * @param get_path_length
88 GDS_NEIGHBOURS_handle_get (struct GNUNET_PeerIdentity *source_peer,
89 struct GNUNET_PeerIdentity *get_path,
90 unsigned int get_path_length,
91 struct GNUNET_HashCode *key,
92 struct GNUNET_PeerIdentity *target_peer,
93 struct GNUNET_PeerIdentity *current_destination,
94 enum current_destination_type *type);
100 * @param get_path_length
101 * @param destination_peer
104 GDS_NEIGHBOURS_send_get_result (struct GNUNET_PeerIdentity *source_peer,
105 struct GNUNET_PeerIdentity *get_path,
106 unsigned int get_path_length,
107 struct GNUNET_PeerIdentity *destination_peer,
108 unsigned int current_path_index);
112 * Initialize neighbours subsystem.
114 * @return GNUNET_OK on success, GNUNET_SYSERR on error
117 GDS_NEIGHBOURS_init (void);
121 * Shutdown neighbours subsystem.
124 GDS_NEIGHBOURS_done (void);
128 * Get the ID of the local node.
130 * @return identity of the local node
132 struct GNUNET_PeerIdentity *
133 GDS_NEIGHBOURS_get_id ();