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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#ifndef BITCOIN_NET_PROCESSING_H
#define BITCOIN_NET_PROCESSING_H

#include "net.h"
#include "validationinterface.h"

/** Register with a network node to receive its signals */
void RegisterNodeSignals(CNodeSignals& nodeSignals);
/** Unregister a network node */
void UnregisterNodeSignals(CNodeSignals& nodeSignals);

class PeerLogicValidation : public CValidationInterface {
private:
    CConnman* connman;

public:
    PeerLogicValidation(CConnman* connmanIn);

    virtual void SyncTransaction(const CTransaction& tx, const CBlockIndex* pindex, int nPosInBlock);
    virtual void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload);
    virtual void BlockChecked(const CBlock& block, const CValidationState& state);
    virtual void NewPoWValidBlock(const CBlockIndex *pindex, const std::shared_ptr<const CBlock>& pblock);
};

struct CNodeStateStats {
    int nMisbehavior;
    int nSyncHeight;
    int nCommonHeight;
    std::vector<int> vHeightInFlight;
};

/** Get statistics from node state */
bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats);
/** Increase a node's misbehavior score. */
void Misbehaving(NodeId nodeid, int howmuch);

/** Process protocol messages received from a given node */
bool ProcessMessages(CNode* pfrom, CConnman& connman, std::atomic<bool>& interrupt);
/**
 * Send queued protocol messages to be sent to a give node.
 *
 * @param[in]   pto             The node which we are sending messages to.
 * @param[in]   connman         The connection manager for that node.
 * @param[in]   interrupt       Interrupt condition for processing threads
 * @return                      True if there is more work to be done
 */
bool SendMessages(CNode* pto, CConnman& connman, std::atomic<bool>& interrupt);

#endif // BITCOIN_NET_PROCESSING_H