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/*
This file is part of GNUnet.
(C) 2001, 2002, 2003, 2004, 2009, 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
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @author Christian Grothoff
* @author Nathan Evans
* @file dht/dht.h
*/
#ifndef DHT_H
#define DHT_H
/**
* Size of the bloom filter the DHT uses to filter peers.
*/
#define DHT_BLOOM_SIZE 128
GNUNET_NETWORK_STRUCT_BEGIN
/**
* Message which indicates the DHT should cancel outstanding
* requests and discard any state.
*/
struct GNUNET_DHT_ClientGetStopMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_DHT_GET_STOP
*/
struct GNUNET_MessageHeader header;
/**
* Always zero.
*/
uint32_t reserved GNUNET_PACKED;
/**
* Unique ID identifying this request
*/
uint64_t unique_id GNUNET_PACKED;
/**
* Key of this request
*/
GNUNET_HashCode key;
};
/**
* DHT GET message sent from clients to service. Indicates that a GET
* request should be issued.
*/
struct GNUNET_DHT_ClientGetMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_DHT_CLIENT_GET
*/
struct GNUNET_MessageHeader header;
/**
* Message options, actually an 'enum GNUNET_DHT_RouteOption' value.
*/
uint32_t options GNUNET_PACKED;
/**
* Replication level for this message
*/
uint32_t desired_replication_level GNUNET_PACKED;
/**
* The type for the data for the GET request; actually an 'enum
* GNUNET_BLOCK_Type'.
*/
uint32_t type;
/**
* The key to search for
*/
GNUNET_HashCode key;
/**
* Unique ID identifying this request, if 0 then
* the client will not expect a response
*/
uint64_t unique_id GNUNET_PACKED;
/* Possibly followed by xquery, copied to end of this dealy do */
};
/**
* Reply to a GET send from the service to a client.
*/
struct GNUNET_DHT_ClientResultMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_DHT_CLIENT_RESULT
*/
struct GNUNET_MessageHeader header;
/**
* The type for the data.
*/
uint32_t type;
/**
* Number of peers recorded in the outgoing path from source to the
* storgage location of this message.
*/
uint32_t put_path_length GNUNET_PACKED;
/**
* The number of peer identities recorded from the storage location
* to this peer.
*/
uint32_t get_path_length GNUNET_PACKED;
/**
* Unique ID of the matching GET request.
*/
uint64_t unique_id GNUNET_PACKED;
/**
* When does this entry expire?
*/
struct GNUNET_TIME_AbsoluteNBO expiration;
/**
* The key that was searched for
*/
GNUNET_HashCode key;
/* put path, get path and actual data are copied to end of this dealy do */
};
/**
* Message to insert data into the DHT, sent from clients to DHT service.
*/
struct GNUNET_DHT_ClientPutMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_DHT_CLIENT_PUT
*/
struct GNUNET_MessageHeader header;
/**
* The type of data to insert.
*/
uint32_t type GNUNET_PACKED;
/**
* Message options, actually an 'enum GNUNET_DHT_RouteOption' value.
*/
uint32_t options GNUNET_PACKED;
/**
* Replication level for this message
*/
uint32_t desired_replication_level GNUNET_PACKED;
/**
* How long should this data persist?
*/
struct GNUNET_TIME_AbsoluteNBO expiration;
/**
* The key to store the value under.
*/
GNUNET_HashCode key;
/* DATA copied to end of this message */
};
/**
* Message to monitor requests going through peer, clients <--> DHT service.
*/
struct GNUNET_DHT_MonitorMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_DHT_MONITOR_{GET, PUT, GET_RESP, PUT_RESP*}
* (*) not yet implemented, necessary for key randomization
*/
struct GNUNET_MessageHeader header;
/**
* The type of data in the request.
*/
uint32_t type GNUNET_PACKED;
/**
* Message options, actually an 'enum GNUNET_DHT_RouteOption' value.
*/
uint32_t options GNUNET_PACKED;
/**
* Replication level for this message
*/
uint32_t desired_replication_level GNUNET_PACKED;
/**
* Number of peers recorded in the outgoing path from source to the
* storgage location of this message.
*/
uint32_t put_path_length GNUNET_PACKED;
/**
* The number of peer identities recorded from the storage location
* to this peer.
*/
uint32_t get_path_length GNUNET_PACKED;
/**
* Unique ID for GET / GET responses.
*/
uint64_t unique_id GNUNET_PACKED;
/**
* How long should this data persist?
*/
struct GNUNET_TIME_AbsoluteNBO expiration;
/**
* The key to store the value under.
*/
GNUNET_HashCode key;
/* put path (if tracked) */
/* get path (if tracked) */
/* Payload */
};
GNUNET_NETWORK_STRUCT_END
#endif
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