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/*
This file is part of GNUnet.
(C) 2001 - 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 Bartlomiej Polot
* @file mesh/mesh.h
*/
#ifndef MESH_H_
#define MESH_H_
#include <stdint.h>
#define MESH_DEBUG GNUNET_YES
#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_util_lib.h"
#include "gnunet_peer_lib.h"
#include "gnunet_core_service.h"
#include "gnunet_protocols.h"
#include <gnunet_mesh_service.h>
/******************************************************************************/
/******************** MESH LOCAL MESSAGES *************************/
/******************************************************************************/
/* Any API call should be documented in the folowing table under API CALL.
* Also, any message type should be documented in the following table, with the
* associated event.
*
* API CALL (GNUNET_MESH_*) MESSAGE USED
* ------------------------ ------------
* connect GNUNET_MESH_ClientConnect
* disconnect None (network level disconnect)
*
* tunnel_create GNUNET_MESH_TunnelMessage
* tunnel_destroy GNUNET_MESH_TunnelMessage
*
* peer_request_connect_add GNUNET_MESH_PeerControl
* peer_request_connect_del GNUNET_MESH_PeerControl
* peer_request_connect_by_type GNUNET_MESH_ConnectPeerByType
*
* notify_transmit_ready *GNUNET_MESH_TransmitReady?*
* notify_transmit_ready_cancel None (clear of internal data structures)
*
*
*
* EVENT MESSAGE USED
* ----- ------------
* data GNUNET_MESH_Data OR
* GNUNET_MESH_DataBroadcast
* new incoming tunnel GNUNET_MESH_PeerControl
* peer connects to a tunnel GNUNET_MESH_PeerControl
* peer disconnects from a tunnel GNUNET_MESH_PeerControl
*/
/******************************************************************************/
/************************** CONSTANTS ******************************/
/******************************************************************************/
#define GNUNET_MESH_LOCAL_TUNNEL_ID_CLI 0x80000000
#define GNUNET_MESH_LOCAL_TUNNEL_ID_SERV 0xB0000000
#define CORE_QUEUE_SIZE 10
#define LOCAL_QUEUE_SIZE 100
/******************************************************************************/
/************************** MESSAGES ******************************/
/******************************************************************************/
GNUNET_NETWORK_STRUCT_BEGIN
/**
* Message for a client to register to the service
*/
struct GNUNET_MESH_ClientConnect
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT
*
* Size: sizeof(struct GNUNET_MESH_ClientConnect) +
* sizeof(MESH_ApplicationType) * applications +
* sizeof(uint16_t) * types
*/
struct GNUNET_MessageHeader header;
uint16_t applications GNUNET_PACKED;
uint16_t types GNUNET_PACKED;
/* uint16_t list_apps[applications] */
/* uint16_t list_types[types] */
};
/**
* Type for tunnel numbering.
* - Local tunnel numbers given by the service (incoming) are >= 0xB0000000
* - Local tunnel numbers given by the client (created) are >= 0x80000000
* - Global tunnel numbers are < 0x80000000
*/
typedef uint32_t MESH_TunnelNumber;
/**
* Message for a client to create and destroy tunnels.
*/
struct GNUNET_MESH_TunnelMessage
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_[CREATE|DESTROY]
*
* Size: sizeof(struct GNUNET_MESH_TunnelMessage)
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel controlled by this client.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
};
/**
* Message for the service to let a client know about created tunnels.
*/
struct GNUNET_MESH_TunnelNotification
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_TUNNEL_CREATE
*
* Size: sizeof(struct GNUNET_MESH_TunnelMessage)
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel controlled by this client.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
/**
* Peer at the other end, if any
*/
struct GNUNET_PeerIdentity peer;
};
/**
* Message for:
* - request adding and deleting peers from a tunnel
* - notify the client that peers have connected:
* -- requested
* -- unrequested (new incoming tunnels)
* - notify the client that peers have disconnected
*/
struct GNUNET_MESH_PeerControl
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_[ADD|DEL]
* (client to service, client created tunnel)
* GNUNET_MESSAGE_TYPE_MESH_LOCAL_PEER_[CONNECTED|DISCONNECTED]
* (service to client)
*
* Size: sizeof(struct GNUNET_MESH_PeerControl)
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel controlled by this client.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
/**
* Peer to connect/disconnect.
*/
struct GNUNET_PeerIdentity peer;
};
/**
* Message for connecting to peers offering a certain service.
*/
struct GNUNET_MESH_ConnectPeerByType
{
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_CONNECT_PEER_BY_TYPE |
* GNUNET_MESSAGE_TYPE_MESH_LOCAL_DISCONNECT_PEER_BY_TYPE
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel controlled by this client.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
/**
* Type specification
*/
GNUNET_MESH_ApplicationType type GNUNET_PACKED;
};
GNUNET_NETWORK_STRUCT_END
/******************************************************************************/
/************************ ENUMERATIONS ****************************/
/******************************************************************************/
/**
* All the states a peer participating in a tunnel can be in.
*/
enum MeshPeerState
{
/**
* Uninitialized status, should never appear in operation.
*/
MESH_PEER_INVALID,
/**
* Peer is the root and owner of the tree
*/
MESH_PEER_ROOT,
/**
* Peer only retransmits traffic, is not a final destination
*/
MESH_PEER_RELAY,
/**
* Path to the peer not known yet
*/
MESH_PEER_SEARCHING,
/**
* Request sent, not yet answered.
*/
MESH_PEER_WAITING,
/**
* Peer connected and ready to accept data
*/
MESH_PEER_READY,
/**
* Peer connected previosly but not responding
*/
MESH_PEER_RECONNECTING
};
#endif
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