Implement BIP0065 changeover logic for v4 blocks.
This commit implements the changeover logic for version 4 blocks as described by BIP0065.
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3 changed files with 21 additions and 2 deletions
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@ -653,6 +653,16 @@ func (b *BlockChain) checkBlockHeaderContext(header *wire.BlockHeader, prevNode
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}
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if !fastAdd {
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// Reject version 3 blocks once a majority of the network has
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// upgraded. This is part of BIP0065.
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if header.Version < 4 && b.isMajorityVersion(4, prevNode,
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b.chainParams.BlockRejectNumRequired) {
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str := "new blocks with version %d are no longer valid"
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str = fmt.Sprintf(str, header.Version)
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return ruleError(ErrBlockVersionTooOld, str)
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}
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// Reject version 2 blocks once a majority of the network has
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// upgraded. This is part of BIP0066.
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if header.Version < 3 && b.isMajorityVersion(3, prevNode,
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@ -1133,6 +1143,15 @@ func (b *BlockChain) checkConnectBlock(node *blockNode, block *btcutil.Block) er
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scriptFlags |= txscript.ScriptVerifyDERSignatures
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}
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// Enforce CHECKLOCKTIMEVERIFY for block versions 4+ once the majority
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// of the network has upgraded to the enforcement threshold. This is
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// part of BIP0065.
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if blockHeader.Version >= 4 && b.isMajorityVersion(4, prevNode,
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b.chainParams.BlockEnforceNumRequired) {
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scriptFlags |= txscript.ScriptVerifyCheckLockTimeVerify
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}
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// Now that the inexpensive checks are done and have passed, verify the
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// transactions are actually allowed to spend the coins by running the
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// expensive ECDSA signature check scripts. Doing this last helps
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@ -24,7 +24,7 @@ const (
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// will require changes to the generated block. Using the wire constant
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// for generated block version could allow creation of invalid blocks
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// for the updated version.
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generatedBlockVersion = 3
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generatedBlockVersion = 4
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// minHighPriority is the minimum priority value that allows a
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// transaction to be considered high priority.
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@ -11,7 +11,7 @@ import (
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)
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// BlockVersion is the current latest supported block version.
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const BlockVersion = 3
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const BlockVersion = 4
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// MaxBlockHeaderPayload is the maximum number of bytes a block header can be.
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// Version 4 bytes + Timestamp 4 bytes + Bits 4 bytes + Nonce 4 bytes +
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