add fast sync func (#204)

[bytom/vapor.git] / protocol / protocol.go

diff --git a/protocol/protocol.go b/protocol/protocol.go
index 98b285b..cb31fe3 100644 (file)
--- a/protocol/protocol.go
+++ b/protocol/protocol.go
@@ -5,12 +5,12 @@ import (
 
        log "github.com/sirupsen/logrus"
 
+       "github.com/vapor/common"
        "github.com/vapor/config"
        "github.com/vapor/event"
        "github.com/vapor/protocol/bc"
        "github.com/vapor/protocol/bc/types"
        "github.com/vapor/protocol/state"
-       "github.com/vapor/common"
 )
 
 const maxProcessBlockChSize = 1024
@@ -112,7 +112,11 @@ func (c *Chain) BestBlockHash() *bc.Hash {
        return &c.bestNode.Hash
 }
 
-// BestBlockHeader returns the chain tail block
+// BestIrreversibleHeader returns the chain best irreversible block
+func (c *Chain) BestIrreversibleHeader() *types.BlockHeader {
+       return c.bestIrreversibleNode.BlockHeader()
+}
+
 func (c *Chain) BestBlockHeader() *types.BlockHeader {
        node := c.index.BestNode()
        return node.BlockHeader()