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authorCameron Garnham <da2ce7@gmail.com>2017-04-04 12:30:31 +0200
committerCameron Garnham <da2ce7@gmail.com>2017-04-04 20:05:43 +0200
commit1352c367a1431fef1a711edeb239fa822a564c4b (patch)
tree272301adf71820b01d1f1abf2453adc8ea9d995a /bip-0148.mediawiki
parent2a97af80db8e82d77e1d40968f39774319e23868 (diff)
downloadbips-1352c367a1431fef1a711edeb239fa822a564c4b.tar.xz
Stop BIP 148 enforced signalling if SegWit is Locked-In State
Diffstat (limited to 'bip-0148.mediawiki')
-rw-r--r--bip-0148.mediawiki14
1 files changed, 11 insertions, 3 deletions
diff --git a/bip-0148.mediawiki b/bip-0148.mediawiki
index 5accfcf..6eb9c42 100644
--- a/bip-0148.mediawiki
+++ b/bip-0148.mediawiki
@@ -37,14 +37,22 @@ While this BIP is active, all blocks must set the nVersion header top 3 bits to
=== Reference implementation ===
<pre>
+// Check if Segregated Witness is Locked In
+bool IsWitnessLockedIn(const CBlockIndex* pindexPrev, const Consensus::Params& params)
+{
+ LOCK(cs_main);
+ return (VersionBitsState(pindexPrev, params, Consensus::DEPLOYMENT_SEGWIT, versionbitscache) == THRESHOLD_LOCKED_IN);
+}
+
// BIP148 mandatory segwit signalling.
int64_t nMedianTimePast = pindex->GetMedianTimePast();
if ( (nMedianTimePast >= 1501545600) && // Tue 01 Aug 2017 00:00:00 UTC
(nMedianTimePast <= 1510704000) && // Wed 15 Nov 2017 00:00:00 UTC
- (!IsWitnessEnabled(pindex->pprev, chainparams.GetConsensus())) ) // Segwit is not active
+ (!IsWitnessLockedIn(pindex->pprev, chainparams.GetConsensus()) && // Segwit is not locked in
+ !IsWitnessEnabled(pindex->pprev, chainparams.GetConsensus())) ) // and is not active.
{
- bool fVersionBits = (pindex->nVersion & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS; // BIP9 bit set
- bool fSegbit = (pindex->nVersion & VersionBitsMask(chainparams.GetConsensus(), Consensus::DEPLOYMENT_SEGWIT)) != 0; // segwit bit set
+ bool fVersionBits = (pindex->nVersion & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS;
+ bool fSegbit = (pindex->nVersion & VersionBitsMask(chainparams.GetConsensus(), Consensus::DEPLOYMENT_SEGWIT)) != 0;
if (!(fVersionBits && fSegbit)) {
return state.DoS(0, error("ConnectBlock(): relayed block must signal for segwit, please upgrade"), REJECT_INVALID, "bad-no-segwit");
}