Implement BIP0065 changeover logic for v4 blocks.

This commit implements the changeover logic for version 4 blocks as
described by BIP0065.
This commit is contained in:
David Hill 2015-10-28 11:43:36 -04:00
parent 3d6afcffe7
commit 7811770d31
3 changed files with 21 additions and 2 deletions

View file

@ -653,6 +653,16 @@ func (b *BlockChain) checkBlockHeaderContext(header *wire.BlockHeader, prevNode
}
if !fastAdd {
// Reject version 3 blocks once a majority of the network has
// upgraded. This is part of BIP0065.
if header.Version < 4 && b.isMajorityVersion(4, prevNode,
b.chainParams.BlockRejectNumRequired) {
str := "new blocks with version %d are no longer valid"
str = fmt.Sprintf(str, header.Version)
return ruleError(ErrBlockVersionTooOld, str)
}
// Reject version 2 blocks once a majority of the network has
// upgraded. This is part of BIP0066.
if header.Version < 3 && b.isMajorityVersion(3, prevNode,
@ -1133,6 +1143,15 @@ func (b *BlockChain) checkConnectBlock(node *blockNode, block *btcutil.Block) er
scriptFlags |= txscript.ScriptVerifyDERSignatures
}
// Enforce CHECKLOCKTIMEVERIFY for block versions 4+ once the majority
// of the network has upgraded to the enforcement threshold. This is
// part of BIP0065.
if blockHeader.Version >= 4 && b.isMajorityVersion(4, prevNode,
b.chainParams.BlockEnforceNumRequired) {
scriptFlags |= txscript.ScriptVerifyCheckLockTimeVerify
}
// Now that the inexpensive checks are done and have passed, verify the
// transactions are actually allowed to spend the coins by running the
// expensive ECDSA signature check scripts. Doing this last helps

View file

@ -24,7 +24,7 @@ const (
// will require changes to the generated block. Using the wire constant
// for generated block version could allow creation of invalid blocks
// for the updated version.
generatedBlockVersion = 3
generatedBlockVersion = 4
// minHighPriority is the minimum priority value that allows a
// transaction to be considered high priority.

View file

@ -11,7 +11,7 @@ import (
)
// BlockVersion is the current latest supported block version.
const BlockVersion = 3
const BlockVersion = 4
// MaxBlockHeaderPayload is the maximum number of bytes a block header can be.
// Version 4 bytes + Timestamp 4 bytes + Bits 4 bytes + Nonce 4 bytes +