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author | Luke Dashjr <luke-jr+git@utopios.org> | 2016-02-03 05:41:13 +0000 |
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committer | Luke Dashjr <luke-jr+git@utopios.org> | 2016-02-03 05:41:13 +0000 |
commit | a68bb9f5e7ef1da5c044907dc3a1d3d4a4dbc2cc (patch) | |
tree | 7e3932c75353499d6659b4f5a94b40e07e64c364 /src/policy/rbf.cpp | |
parent | 027fdb83b41ae9e9125cf61f6460c03ab34e5961 (diff) | |
parent | fd13fe7ca01b6104ce591af2b90ee6951ccc5a16 (diff) | |
download | bitcoin-a68bb9f5e7ef1da5c044907dc3a1d3d4a4dbc2cc.tar.xz |
Merge branch 'master' into single_prodname
Diffstat (limited to 'src/policy/rbf.cpp')
-rw-r--r-- | src/policy/rbf.cpp | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/policy/rbf.cpp b/src/policy/rbf.cpp new file mode 100644 index 0000000000..98b1a1ba4c --- /dev/null +++ b/src/policy/rbf.cpp @@ -0,0 +1,46 @@ +// Copyright (c) 2016 The Bitcoin developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include "policy/rbf.h" + +bool SignalsOptInRBF(const CTransaction &tx) +{ + BOOST_FOREACH(const CTxIn &txin, tx.vin) { + if (txin.nSequence < std::numeric_limits<unsigned int>::max()-1) { + return true; + } + } + return false; +} + +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; +} |