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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>
#include <gnunet_mesh_service_new.h>
#include "gnunet_common.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
* ----- ------------
* notify_transmit_ready reply GNUNET_MESH_TransmitReady
* notify_transmit_ready 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_MARK 0x80000000
/******************************************************************************/
/************************** MESSAGES ******************************/
/******************************************************************************/
/**
* 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(uint16_t) * types +
* sizeof(MESH_ApplicationType) * applications
*/
struct GNUNET_MessageHeader header;
uint16_t types GNUNET_PACKED;
uint16_t applications GNUNET_PACKED;
/* uint16_t list_types[types] */
/* uint16_t list_apps[applications] */
};
/**
* Type for tunnel numbering.
* - Local tunnel numbers 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:
* - 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
*/
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;
};
/**
* Message for notifying the service that the client wants to send data or
* notifying a client that the service is ready to accept data.
*/
struct GNUNET_MESH_TransmitReady {
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_REQUEST_TRANSMIT_READY
* GNUNET_MESSAGE_TYPE_MESH_LOCAL_NOTIFY_TRANSMIT_READY
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel controlled by this client.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
/**
* Size of message we would like to transmit to this tunnel
*/
uint32_t msg_size GNUNET_PACKED;
};
/**
* Message to encapsulate data transmitted to/from the service
*/
struct GNUNET_MESH_Data {
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_DATA
* (client to service, or service to client)
* Size: sizeof(struct GNUNET_MESH_Data) + sizeof (data)
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel in which this client participates.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
/**
* Source or destination of the message (depending on direction).
*/
struct GNUNET_PeerIdentity peer_id;
/* uint8_t data[] */
};
/**
* Message to encapsulate broadcast data transmitted to the service
*/
struct GNUNET_MESH_DataBroadcast {
/**
* Type: GNUNET_MESSAGE_TYPE_MESH_LOCAL_DATA_BROADCAST
* (client to service only, client created tunnel)
* Size: sizeof(struct GNUNET_MESH_DataBroadcast) + sizeof (data)
*/
struct GNUNET_MessageHeader header;
/**
* ID of a tunnel controlled by this client.
*/
MESH_TunnelNumber tunnel_id GNUNET_PACKED;
/* uint8_t data[] */
};
#endif
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