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/*
This file is part of GNUnet.
(C) 2001, 2002, 2003, 2004, 2009 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 2, 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 NOT Nathan Evans
* @file dv/dv.h
*/
#ifndef DV_H
#define DV_H
#include "gnunet_common.h"
#define DEBUG_DV GNUNET_YES
#define DEBUG_DV_API GNUNET_YES
typedef void (*GNUNET_DV_MessageReceivedHandler) (void *cls,
struct GNUNET_PeerIdentity *sender,
char *msg,
size_t msg_len,
unsigned int distance,
char *sender_address,
size_t sender_address_len);
/**
* DV Message, contains a message that was received
* via DV for this peer!
*
* Sender address is copied to the end of this struct,
* followed by the actual message received.
*/
struct GNUNET_DV_MessageReceived
{
/**
* Type: GNUNET_MESSAGE_TYPE_TRANSPORT_DV_MESSAGE
*/
struct GNUNET_MessageHeader header;
/**
* The sender of the message
*/
struct GNUNET_PeerIdentity sender;
/**
* The message that was sent
*/
size_t msg_len;
/**
* The distance to the peer that we received the message from
*/
size_t distance;
/**
* Length of the sender address, appended to end of this message
*/
size_t sender_address_len;
};
/**
* DV Message, indicates that we have learned of a new DV level peer.
*
* Sender address is copied to the end of this struct.
*/
struct GNUNET_DV_ConnectMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_TRANSPORT_DV_MESSAGE
*/
struct GNUNET_MessageHeader header;
/**
* The sender of the message
*/
struct GNUNET_PeerIdentity *sender;
/**
* The message that was sent
*/
struct GNUNET_MessageHeader *msg;
/**
* The distance to the peer that we received the message from
*/
size_t distance;
/**
* Length of the sender address, appended to end of this message
*/
size_t sender_address_len;
};
/**
* Message to send a message over DV via a specific peer
*/
struct GNUNET_DV_SendMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_DV_SEND
*/
struct GNUNET_MessageHeader header;
/**
* Intended final recipient of this message
*/
struct GNUNET_PeerIdentity target;
/**
* The message(s) to be sent.
*/
char *msgbuf;
/**
* The size of the msgbuf
*/
size_t msgbuf_size;
/**
* Message priority
*/
size_t priority;
/**
* How long can we delay sending?
*/
struct GNUNET_TIME_Relative timeout;
/**
* Size of the address (appended to end of struct)
*/
size_t addrlen;
/*
* Sender, appended to end of struct tells via whom
* to send this message.
*/
};
/**
* Message that gets sent between nodes updating dv infos
*/
typedef struct
{
/* Message Header */
struct GNUNET_MessageHeader header;
/**
* Cost from received from node to neighbor node, takes distance into account
*/
unsigned int cost GNUNET_PACKED;
/**
* Identity of neighbor we learned information about
*/
struct GNUNET_PeerIdentity neighbor;
/**
* PublicKey of neighbor.
*/
struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded pkey;
/**
* Neighbor ID to use when sending to this peer
*/
unsigned int neighbor_id GNUNET_PACKED;
} p2p_dv_MESSAGE_NeighborInfo;
/**
* Message that gets sent between nodes carrying information
*/
typedef struct
{
struct GNUNET_MessageHeader header;
/**
* Identity of peer that ultimately sent the message.
* Should be looked up in the set of 'neighbor_id's of
* the referring peer.
*/
unsigned int sender GNUNET_PACKED;
/**
* Identity of neighbor this message is going to. Should
* be looked up in the set of our own identifiers for
* neighbors!
*/
unsigned int recipient GNUNET_PACKED;
} p2p_dv_MESSAGE_Data;
struct GNUNET_DV_Handle *
GNUNET_DV_connect (struct GNUNET_SCHEDULER_Handle *sched,
const struct GNUNET_CONFIGURATION_Handle *cfg,
GNUNET_DV_MessageReceivedHandler receive_handler,
void *receive_handler_cls);
#endif
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