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39 lines
1.3 KiB
39 lines
1.3 KiB
// Copyright (c) 2016-2018 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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#include <policy/rbf.h>
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#include <util/rbf.h>
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RBFTransactionState IsRBFOptIn(const CTransaction& tx, const CTxMemPool& pool)
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{
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AssertLockHeld(pool.cs);
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CTxMemPool::setEntries setAncestors;
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// First check the transaction itself.
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if (SignalsOptInRBF(tx)) {
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return RBFTransactionState::REPLACEABLE_BIP125;
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}
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// If this transaction is not in our mempool, then we can't be sure
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// we will know about all its inputs.
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if (!pool.exists(tx.GetHash())) {
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return RBFTransactionState::UNKNOWN;
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}
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// If all the inputs have nSequence >= maxint-1, it still might be
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// signaled for RBF if any unconfirmed parents have signaled.
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uint64_t noLimit = std::numeric_limits<uint64_t>::max();
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std::string dummy;
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CTxMemPoolEntry entry = *pool.mapTx.find(tx.GetHash());
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pool.CalculateMemPoolAncestors(entry, setAncestors, noLimit, noLimit, noLimit, noLimit, dummy, false);
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for (CTxMemPool::txiter it : setAncestors) {
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if (SignalsOptInRBF(it->GetTx())) {
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return RBFTransactionState::REPLACEABLE_BIP125;
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}
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}
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return RBFTransactionState::FINAL;
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}
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