try fix bug (#457)

diff --git a/protocol/block.go b/protocol/block.go
index 3b08fbd..a4e167f 100644 (file)
--- a/protocol/block.go
+++ b/protocol/block.go
@@ -20,7 +20,7 @@ var (
 
 // BlockExist check is a block in chain or orphan
 func (c *Chain) BlockExist(hash *bc.Hash) bool {
-       if _, err := c.store.GetBlockHeader(hash); err == nil {
+       if bh, err := c.store.GetBlockHeader(hash); err == nil && bh.Height <= c.BestBlockHeight() {
                return true
        }
        return c.orphanManage.BlockExist(hash)