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/*
This file is part of GNUnet.
(C) 2012, 2013 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.
*/
/**
* @file multicast/multicast.h
* @brief multicast IPC messages
* @author Christian Grothoff
*/
#ifndef MULTICAST_H
#define MULTICAST_H
GNUNET_NETWORK_STRUCT_BEGIN
/**
* Message sent from the client to the service to notify the service
* about a join decision.
*/
struct MulticastJoinDecisionMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Unique ID that identifies the associated join test.
*/
uint32_t uid;
/**
* #GNUNET_YES if the peer was admitted.
*/
int32_t is_admitted;
/**
* Number of relays given.
*/
uint32_t relay_count;
/* followed by 'relay_count' peer identities */
/* followed by the join response message */
};
/**
* Message sent from the client to the service to notify the service
* about the result of a membership test.
*/
struct MulticastMembershipTestResponseMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Unique ID that identifies the associated membership test.
*/
uint32_t uid;
/**
* #GNUNET_YES if the peer is a member, #GNUNET_NO if peer was not a member,
* #GNUNET_SYSERR if we cannot answer the test.
*/
int32_t is_admitted;
};
/**
* Message sent from the client to the service to give the service
* a replayed message.
*/
struct MulticastReplayResponseMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Unique ID that identifies the associated replay session.
*/
uint32_t uid;
/**
* An `enum GNUNET_MULTICAST_ReplayErrorCode` identifying issues (in NBO).
*/
int32_t error_code;
/* followed by replayed message */
};
/**
* Message sent from the client to the service to notify the service
* about the end of a replay session.
*/
struct MulticastReplayEndMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Unique ID that identifies the associated replay session.
*/
uint32_t uid;
};
/**
* Message sent from the client to the service to notify the service
* about the starting of a multicast group with this peers as its origin.
*/
struct MulticastOriginStartMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Always zero.
*/
uint32_t reserved;
/**
* Private, non-ephemeral key for the mutlicast group.
*/
struct GNUNET_CRYPTO_EddsaPrivateKey group_key;
/**
* Last fragment ID, used to continue counting fragments if we resume operating
* a group.
*/
uint64_t last_fragment_id;
};
/**
* Message sent from the client to the service to broadcast to all group
* members.
*/
struct MulticastBroadcastMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* #GNUNET_OK normally, #GNUNET_SYSERR if the origin aborted the
* transmission.
*/
int32_t status;
/**
* Message ID.
*/
uint64_t message_id;
/**
* Group generation.
*/
uint64_t group_generation;
/**
* Total message size.
*/
uint64_t total_size;
};
/**
* Message sent from the client to the service to join a multicast group.
*/
struct MulticastJoinMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Number of relays we (think) we already know about.
*/
uint32_t relay_count;
/**
* Public non-ephemeral key of the mutlicast group.
*/
struct GNUNET_CRYPTO_EddsaPublicKey group_key;
/**
* Our private key for the group.
*/
struct GNUNET_CRYPTO_EddsaPrivateKey member_key;
/* followed by 'relay_count' `struct GNUNET_PeerIdentity`s */
};
/**
* Message sent from the client to the service OR the service to the
* client asking for a message fragment to be replayed.
*/
struct MulticastReplayRequestMessage
{
/**
* The message type can be either
* #GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST or
* #GNUNET_MESSAGE_TYPE_MULTICAST_REPLAY_REQUEST_CANCEL.
*/
struct GNUNET_MessageHeader header;
/**
* Replay request ID.
*/
uint32_t uid;
/**
* ID of the message that is being requested.
*/
uint64_t message_id;
/**
* Offset of the fragment that is being requested.
*/
uint64_t fragment_offset;
/**
* Additional flags for the request.
*/
uint64_t flags;
};
/**
* Message sent from the client to the service to unicast to the group origin.
*/
struct MulticastUnicastToOriginMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Reserved (always 0).
*/
uint32_t reserved;
/**
* Message ID.
*/
uint64_t message_id;
/**
* Total message size.
*/
uint64_t total_size;
/* followed by payload */
};
/**
* Message sent from the client to the service to
* cancel unicast to the group origin.
*/
struct MulticastUnicastToOriginCancelMessage
{
/**
*
*/
struct GNUNET_MessageHeader header;
/**
* Reserved (always 0).
*/
uint32_t reserved;
/**
* Message ID.
*/
uint64_t message_id;
};
GNUNET_NETWORK_STRUCT_END
#endif
/* end of multicast.h */
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