git / moonbite-core / src/chainparams.h · raw

// Copyright (c) 2009-2010 Satoshi Nakamoto// Copyright (c) 2009-2020 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_CHAINPARAMS_H#define BITCOIN_CHAINPARAMS_H#include <chainparamsbase.h>#include <consensus/params.h>#include <primitives/block.h>#include <protocol.h>#include <memory>#include <vector>struct SeedSpec6 {    uint8_t addr[16];    uint16_t port;};typedef std::map<int, uint256> MapCheckpoints;struct CCheckpointData {    MapCheckpoints mapCheckpoints;    int GetHeight() const {        if (mapCheckpoints.empty()) return 0;        return mapCheckpoints.rbegin()->first;    }};/** * Holds various statistics on transactions within a chain. Used to estimate * verification progress during chain sync. * * See also: CChainParams::TxData, GuessVerificationProgress. */struct ChainTxData {    int64_t nTime;    //!< UNIX timestamp of last known number of transactions    int64_t nTxCount; //!< total number of transactions between genesis and that timestamp    double dTxRate;   //!< estimated number of transactions per second after that timestamp};/** * CChainParams defines various tweakable parameters of a given instance of the * Bitcoin system. There are three: the main network on which people trade goods * and services, the public test network which gets reset from time to time and * a regression test mode which is intended for private networks only. It has * minimal difficulty to ensure that blocks can be found instantly. */class CChainParams{public:    enum Base58Type {        PUBKEY_ADDRESS,        SCRIPT_ADDRESS,        SCRIPT_ADDRESS2,        SECRET_KEY,        EXT_PUBLIC_KEY,        EXT_SECRET_KEY,        MAX_BASE58_TYPES    };    const Consensus::Params& GetConsensus() const { return consensus; }    const CMessageHeader::MessageStartChars& MessageStart() const { return pchMessageStart; }    int GetDefaultPort() const { return nDefaultPort; }    const CBlock& GenesisBlock() const { return genesis; }    /** Default value for -checkmempool and -checkblockindex argument */    bool DefaultConsistencyChecks() const { return fDefaultConsistencyChecks; }    /** Policy: Filter transactions that do not match well-defined patterns */    bool RequireStandard() const { return fRequireStandard; }    /** If this chain is exclusively used for testing */    bool IsTestChain() const { return m_is_test_chain; }    /** If this chain allows time to be mocked */    bool IsMockableChain() const { return m_is_mockable_chain; }    uint64_t PruneAfterHeight() const { return nPruneAfterHeight; }    /** Minimum free space (in GB) needed for data directory */    uint64_t AssumedBlockchainSize() const { return m_assumed_blockchain_size; }    /** Minimum free space (in GB) needed for data directory when pruned; Does not include prune target*/    uint64_t AssumedChainStateSize() const { return m_assumed_chain_state_size; }    /** Whether it is possible to mine blocks on demand (no retargeting) */    bool MineBlocksOnDemand() const { return consensus.fPowNoRetargeting; }    /** Return the network string */    std::string NetworkIDString() const { return strNetworkID; }    /** Return the list of hostnames to look up for DNS seeds */    const std::vector<std::string>& DNSSeeds() const { return vSeeds; }    const std::vector<unsigned char>& Base58Prefix(Base58Type type) const { return base58Prefixes[type]; }    const std::string& Bech32HRP() const { return bech32_hrp; }    const std::string& MWEB_HRP() const { return mweb_hrp; }    const std::vector<uint8_t>& FixedSeeds() const { return vFixedSeeds; }    const CCheckpointData& Checkpoints() const { return checkpointData; }    const ChainTxData& TxData() const { return chainTxData; }protected:    CChainParams() {}    Consensus::Params consensus;    CMessageHeader::MessageStartChars pchMessageStart;    int nDefaultPort;    uint64_t nPruneAfterHeight;    uint64_t m_assumed_blockchain_size;    uint64_t m_assumed_chain_state_size;    std::vector<std::string> vSeeds;    std::vector<unsigned char> base58Prefixes[MAX_BASE58_TYPES];    std::string bech32_hrp;    std::string mweb_hrp;    std::string strNetworkID;    CBlock genesis;    std::vector<uint8_t> vFixedSeeds;    bool fDefaultConsistencyChecks;    bool fRequireStandard;    bool m_is_test_chain;    bool m_is_mockable_chain;    CCheckpointData checkpointData;    ChainTxData chainTxData;};/** * Creates and returns a std::unique_ptr<CChainParams> of the chosen chain. * @returns a CChainParams* of the chosen chain. * @throws a std::runtime_error if the chain is not supported. */std::unique_ptr<const CChainParams> CreateChainParams(const ArgsManager& args, const std::string& chain);/** * Return the currently selected parameters. This won't change after app * startup, except for unit tests. */const CChainParams &Params();/** * Sets the params returned by Params() to those for the given chain name. * @throws std::runtime_error when the chain is not supported. */void SelectParams(const std::string& chain);#endif // BITCOIN_CHAINPARAMS_H