501    MSG_WTX = 5,                                      //!< Defined in BIP 339
502    // The following can only occur in getdata. Invs always use TX/WTX or BLOCK.
503    MSG_FILTERED_BLOCK = 3,                           //!< Defined in BIP37
504    MSG_CMPCT_BLOCK = 4,                              //!< Defined in BIP152
505    MSG_WITNESS_BLOCK = MSG_BLOCK | MSG_WITNESS_FLAG, //!< Defined in BIP144
506    MSG_WITNESS_TX = MSG_TX | MSG_WITNESS_FLAG,       //!< Defined in BIP144
507    // MSG_FILTERED_WITNESS_BLOCK is defined in BIP144 as reserved for future
508    // use and remains unused.
509    // MSG_FILTERED_WITNESS_BLOCK = MSG_FILTERED_BLOCK | MSG_WITNESS_FLAG,
510};
511
512/** inv message data */
513class CInv
514{
515public:
516    CInv();
517    CInv(uint32_t typeIn, const uint256& hashIn);
518
519    SERIALIZE_METHODS(CInv, obj) { READWRITE(obj.type, obj.hash); }
520
521    friend bool operator<(const CInv& a, const CInv& b);
522
523    std::string GetMessageType() const;
524    std::string ToString() const;
525
526    // Single-message helper methods
527    bool IsMsgTx() const { return type == MSG_TX; }
528    bool IsMsgBlk() const { return type == MSG_BLOCK; }
529    bool IsMsgWtx() const { return type == MSG_WTX; }
530    bool IsMsgFilteredBlk() const { return type == MSG_FILTERED_BLOCK; }
531    bool IsMsgCmpctBlk() const { return type == MSG_CMPCT_BLOCK; }
532    bool IsMsgWitnessBlk() const { return type == MSG_WITNESS_BLOCK; }
533
534    // Combined-message helper methods
535    bool IsGenTxMsg() const
536    {
537        return type == MSG_TX || type == MSG_WTX || type == MSG_WITNESS_TX;
538    }
539    bool IsGenBlkMsg() const
540    {
541        return type == MSG_BLOCK || type == MSG_FILTERED_BLOCK || type == MSG_CMPCT_BLOCK || type == MSG_WITNESS_BLOCK;
542    }
543
544    uint32_t type;
545    uint256 hash;
546};
547
548/** Convert a TX/WITNESS_TX/WTX CInv to a GenTxid. */
549GenTxid ToGenTxid(const CInv& inv);
550
551#endif // BITCOIN_PROTOCOL_H
552