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/*
This file is part of cpp-ethereum.
cpp-ethereum 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 of the License, or
(at your option) any later version.
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file EthereumPeer.h
* @author Gav Wood <i@gavwood.com>
* @date 2014
*/
#pragma once
#include <mutex>
#include <array>
#include <set>
#include <memory>
#include <utility>
#include <libdevcore/RLP.h>
#include <libethcore/CommonEth.h>
#include <libp2p/Capability.h>
#include "CommonNet.h"
namespace dev
{
namespace eth
{
/**
* @brief The EthereumPeer class
* @todo Document fully.
*/
class EthereumPeer: public p2p::Capability
{
friend class EthereumHost;
public:
EthereumPeer(p2p::Session* _s, p2p::HostCapabilityFace* _h);
virtual ~EthereumPeer();
static std::string name() { return "eth"; }
EthereumHost* host() const;
private:
virtual bool interpret(RLP const& _r);
void sendStatus();
void startInitialSync();
/// Ensure that we are waiting for a bunch of blocks from our peer.
void ensureGettingChain();
/// Ensure that we are waiting for a bunch of blocks from our peer.
void continueGettingChain();
/// Now getting a different chain so we need to make sure we restart.
void restartGettingChain();
void giveUpOnFetch();
unsigned m_protocolVersion;
u256 m_networkId;
h256 m_latestHash; ///< Peer's latest block's hash.
u256 m_totalDifficulty; ///< Peer's latest block's total difficulty.
h256s m_neededBlocks; ///< The blocks that we should download from this peer.
h256Set m_failedBlocks; ///< Blocks that the peer doesn't seem to have.
h256Set m_askedBlocks; ///< The blocks for which we sent the last GetBlocks for but haven't received a corresponding Blocks.
bool m_askedBlocksChanged = true;
bool m_requireTransactions;
std::set<h256> m_knownBlocks;
std::set<h256> m_knownTransactions;
};
}
}