Add CHECKSEQUENCEVERIFY softfork through BIP9

sipa · btcdrak · commit 65751a3cf242 · 2016-03-18T08:09:06.000Z
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
@@ -86,7 +86,13 @@ class CMainParams : public CChainParams {
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
-        /** 
+
+        // Deployment of BIP68, BIP112, and BIP113.
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
+
+        /**
          * The message start string is designed to be unlikely to occur in normal data.
          * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
          * a large 32-bit integer with any alignment.
@@ -172,6 +178,12 @@ class CTestNetParams : public CChainParams {
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
+
+        // Deployment of BIP68, BIP112, and BIP113.
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
+
         pchMessageStart[0] = 0x0b;
         pchMessageStart[1] = 0x11;
         pchMessageStart[2] = 0x09;
@@ -240,6 +252,9 @@ class CRegTestParams : public CChainParams {
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
+        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
 
         pchMessageStart[0] = 0xfa;
         pchMessageStart[1] = 0xbf;
diff --git a/src/consensus/params.h b/src/consensus/params.h
@@ -15,6 +15,7 @@ namespace Consensus {
 enum DeploymentPos
 {
     DEPLOYMENT_TESTDUMMY,
+    DEPLOYMENT_CSV, // Deployment of BIP68, BIP112, and BIP113.
     MAX_VERSION_BITS_DEPLOYMENTS
 };
 
diff --git a/src/main.cpp b/src/main.cpp
@@ -2262,6 +2262,11 @@ bool ConnectBlock(const CBlock& block, CValidationState& state, CBlockIndex* pin
         flags |= SCRIPT_VERIFY_CHECKLOCKTIMEVERIFY;
     }
 
+    // Start enforcing CHECKSEQUENCEVERIFY using versionbits logic.
+    if (VersionBitsState(pindex->pprev, chainparams.GetConsensus(), Consensus::DEPLOYMENT_CSV, versionbitscache) == THRESHOLD_ACTIVE) {
+        flags |= SCRIPT_VERIFY_CHECKSEQUENCEVERIFY;
+    }
+
     int64_t nTime2 = GetTimeMicros(); nTimeForks += nTime2 - nTime1;
     LogPrint("bench", "    - Fork checks: %.2fms [%.2fs]\n", 0.001 * (nTime2 - nTime1), nTimeForks * 0.000001);
 
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
@@ -681,6 +681,7 @@ UniValue getblockchaininfo(const UniValue& params, bool fHelp)
     softforks.push_back(SoftForkDesc("bip34", 2, tip, consensusParams));
     softforks.push_back(SoftForkDesc("bip66", 3, tip, consensusParams));
     softforks.push_back(SoftForkDesc("bip65", 4, tip, consensusParams));
+    bip9_softforks.push_back(BIP9SoftForkDesc("csv", consensusParams, Consensus::DEPLOYMENT_CSV));
     obj.push_back(Pair("softforks",             softforks));
     obj.push_back(Pair("bip9_softforks", bip9_softforks));
 

Original file line number	Diff line number	Diff line change
`@@ -15,6 +15,7 @@ namespace Consensus {`
`15`	`15`	`enum DeploymentPos`
`16`	`16`	`{`
`17`	`17`	`DEPLOYMENT_TESTDUMMY,`
	`18`	`+ DEPLOYMENT_CSV, // Deployment of BIP68, BIP112, and BIP113.`
`18`	`19`	`MAX_VERSION_BITS_DEPLOYMENTS`
`19`	`20`	`};`
`20`	`21`