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/*
This file is part of GNUnet
Copyright (C) 2012 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
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
Affero General Public License for more details.
*/
/**
* @file consensus/consensus_protocol.h
* @brief p2p message definitions for consensus
* @author Florian Dold
*/
#ifndef GNUNET_CONSENSUS_PROTOCOL_H
#define GNUNET_CONSENSUS_PROTOCOL_H
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_common.h"
#include "gnunet_protocols.h"
GNUNET_NETWORK_STRUCT_BEGIN
/**
* Sent as context message for set reconciliation.
*
* Essentially contains all the fields
* from 'struct TaskKey', but in NBO.
*/
struct GNUNET_CONSENSUS_RoundContextMessage
{
/**
* Type: #GNUNET_MESSAGE_TYPE_CONSENSUS_P2P_ROUND_CONTEXT
*/
struct GNUNET_MessageHeader header;
/**
* A value from 'enum PhaseKind'.
*/
uint16_t kind GNUNET_PACKED;
/**
* Number of the first peer
* in canonical order.
*/
int16_t peer1 GNUNET_PACKED;
/**
* Number of the second peer in canonical order.
*/
int16_t peer2 GNUNET_PACKED;
/**
* Repetition of the gradecast phase.
*/
int16_t repetition GNUNET_PACKED;
/**
* Leader in the gradecast phase.
*
* Can be different from both peer1 and peer2.
*/
int16_t leader GNUNET_PACKED;
/**
* Non-zero if this set reconciliation
* had elements removed because they were contested.
*
* Will be considered when grading broadcasts.
*
* Ignored for set operations that are not within gradecasts.
*/
uint16_t is_contested GNUNET_PACKED;
};
enum {
CONSENSUS_MARKER_CONTESTED = 1,
CONSENSUS_MARKER_SIZE = 2,
};
/**
* Consensus element, either marker or payload.
*/
struct ConsensusElement
{
/**
* Payload element_type, only valid
* if this is not a marker element.
*/
uint16_t payload_type GNUNET_PACKED;
/**
* Is this a marker element?
*/
uint8_t marker;
/* rest: element data */
};
struct ConsensusSizeElement
{
struct ConsensusElement ce;
uint64_t size GNUNET_PACKED;
uint8_t sender_index;
};
struct ConsensusStuffedElement
{
struct ConsensusElement ce;
struct GNUNET_HashCode rand GNUNET_PACKED;
};
GNUNET_NETWORK_STRUCT_END
#endif
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