You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
3.5 KiB
124 lines
3.5 KiB
/*
|
|
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 EthereumHost.h
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <mutex>
|
|
#include <map>
|
|
#include <vector>
|
|
#include <set>
|
|
#include <memory>
|
|
#include <utility>
|
|
#include <thread>
|
|
#include <libdevcore/Guards.h>
|
|
#include <libdevcore/Worker.h>
|
|
#include <libdevcore/RangeMask.h>
|
|
#include <libethcore/CommonEth.h>
|
|
#include <libp2p/Common.h>
|
|
#include "CommonNet.h"
|
|
#include "EthereumPeer.h"
|
|
#include "DownloadMan.h"
|
|
|
|
namespace dev
|
|
{
|
|
|
|
class RLPStream;
|
|
|
|
namespace eth
|
|
{
|
|
|
|
class TransactionQueue;
|
|
class BlockQueue;
|
|
|
|
/**
|
|
* @brief The EthereumHost class
|
|
* @warning None of this is thread-safe. You have been warned.
|
|
* @doWork Syncs to peers and sends new blocks and transactions.
|
|
*/
|
|
class EthereumHost: public p2p::HostCapability<EthereumPeer>, Worker
|
|
{
|
|
friend class EthereumPeer;
|
|
|
|
public:
|
|
/// Start server, but don't listen.
|
|
EthereumHost(BlockChain const& _ch, TransactionQueue& _tq, BlockQueue& _bq, u256 _networkId);
|
|
|
|
/// Will block on network process events.
|
|
virtual ~EthereumHost();
|
|
|
|
unsigned protocolVersion() const { return c_protocolVersion; }
|
|
u256 networkId() const { return m_networkId; }
|
|
void setNetworkId(u256 _n) { m_networkId = _n; }
|
|
|
|
void reset();
|
|
|
|
DownloadMan const& downloadMan() const { return m_man; }
|
|
bool isSyncing() const { return !!m_syncer; }
|
|
|
|
bool isBanned(p2p::NodeId _id) const { return !!m_banned.count(_id); }
|
|
|
|
private:
|
|
/// Session is tell us that we may need (re-)syncing with the peer.
|
|
void noteNeedsSyncing(EthereumPeer* _who);
|
|
|
|
/// Called when the peer can no longer provide us with any needed blocks.
|
|
void noteDoneBlocks(EthereumPeer* _who, bool _clemency);
|
|
|
|
/// Sync with the BlockChain. It might contain one of our mined blocks, we might have new candidates from the network.
|
|
void doWork();
|
|
|
|
void maintainTransactions();
|
|
void maintainBlocks(h256 _currentBlock);
|
|
|
|
/// Get a bunch of needed blocks.
|
|
/// Removes them from our list of needed blocks.
|
|
/// @returns empty if there's no more blocks left to fetch, otherwise the blocks to fetch.
|
|
h256Set neededBlocks(h256Set const& _exclude);
|
|
|
|
/// Check to see if the network peer-state initialisation has happened.
|
|
bool isInitialised() const { return m_latestBlockSent; }
|
|
|
|
/// Initialises the network peer-state, doing the stuff that needs to be once-only. @returns true if it really was first.
|
|
bool ensureInitialised();
|
|
|
|
virtual void onStarting() { startWorking(); }
|
|
virtual void onStopping() { stopWorking(); }
|
|
|
|
void changeSyncer(EthereumPeer* _ignore);
|
|
|
|
BlockChain const& m_chain;
|
|
TransactionQueue& m_tq; ///< Maintains a list of incoming transactions not yet in a block on the blockchain.
|
|
BlockQueue& m_bq; ///< Maintains a list of incoming blocks not yet on the blockchain (to be imported).
|
|
|
|
u256 m_networkId;
|
|
|
|
EthereumPeer* m_syncer = nullptr; // TODO: switch to weak_ptr
|
|
|
|
DownloadMan m_man;
|
|
|
|
h256 m_latestBlockSent;
|
|
h256Set m_transactionsSent;
|
|
|
|
std::set<p2p::NodeId> m_banned;
|
|
};
|
|
|
|
}
|
|
}
|
|
|