RBFTransactionState IsRBFOptIn(const CTransaction &tx, CTxMemPool &pool)
{
AssertLockHeld(pool.cs);
CTxMemPool::setEntries setAncestors;
// First check the transaction itself.
if (SignalsOptInRBF(tx)) {
return RBF_TRANSACTIONSTATE_REPLACEABLE_BIP125;
}
// If this transaction is not in our mempool, then we can't be sure
// we will know about all its inputs.
if (!pool.exists(tx.GetHash())) {
return RBF_TRANSACTIONSTATE_UNKNOWN;
}
// If all the inputs have nSequence >= maxint-1, it still might be
// signaled for RBF if any unconfirmed parents have signaled.
uint64_t noLimit = std::numeric_limits<uint64_t>::max();
std::string dummy;
CTxMemPoolEntry entry = *pool.mapTx.find(tx.GetHash());
pool.CalculateMemPoolAncestors(entry, setAncestors, noLimit, noLimit, noLimit, noLimit, dummy, false);
BOOST_FOREACH(CTxMemPool::txiter it, setAncestors) {
if (SignalsOptInRBF(it->GetTx())) {
return RBF_TRANSACTIONSTATE_REPLACEABLE_BIP125;
}
}
return RBF_TRANSACTIONSTATE_FINAL;
}
bool IsRBFOptIn(const CTxMemPoolEntry &entry, CTxMemPool &pool)
{
AssertLockHeld(pool.cs);
CTxMemPool::setEntries setAncestors;
// First check the transaction itself.
if (SignalsOptInRBF(entry.GetTx())) {
return true;
}
// If this transaction is not in our mempool, then we can't be sure
// we will know about all its inputs.
if (!pool.exists(entry.GetTx().GetHash())) {
throw std::runtime_error("Cannot determine RBF opt-in signal for non-mempool transaction\n");
}
// If all the inputs have nSequence >= maxint-1, it still might be
// signaled for RBF if any unconfirmed parents have signaled.
uint64_t noLimit = std::numeric_limits<uint64_t>::max();
std::string dummy;
pool.CalculateMemPoolAncestors(entry, setAncestors, noLimit, noLimit, noLimit, noLimit, dummy, false);
BOOST_FOREACH(CTxMemPool::txiter it, setAncestors) {
if (SignalsOptInRBF(it->GetTx())) {
return true;
}
}
return false;
}
