mirror of https://github.com/bitcoin/bitcoin.git
24 lines
961 B
C++
24 lines
961 B
C++
// Copyright (c) 2016-2021 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_UTIL_RBF_H
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#define BITCOIN_UTIL_RBF_H
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#include <cstdint>
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class CTransaction;
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static constexpr uint32_t MAX_BIP125_RBF_SEQUENCE{0xfffffffd};
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/** Check whether the sequence numbers on this transaction are signaling opt-in to replace-by-fee,
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* according to BIP 125. Allow opt-out of transaction replacement by setting nSequence >
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* MAX_BIP125_RBF_SEQUENCE (SEQUENCE_FINAL-2) on all inputs.
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*
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* SEQUENCE_FINAL-1 is picked to still allow use of nLockTime by non-replaceable transactions. All
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* inputs rather than just one is for the sake of multi-party protocols, where we don't want a single
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* party to be able to disable replacement by opting out in their own input. */
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bool SignalsOptInRBF(const CTransaction& tx);
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#endif // BITCOIN_UTIL_RBF_H
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