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-rw-r--r--eth/handler.go6
1 files changed, 6 insertions, 0 deletions
diff --git a/eth/handler.go b/eth/handler.go
index 858ae2958..065116fd0 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -256,6 +256,12 @@ func (self *ProtocolManager) handleMsg(p *peer) error {
RemoteId: p.ID().String(),
})
+ // Make sure the block isn't already known. If this is the case simply drop
+ // the message and move on.
+ if self.chainman.HasBlock(hash) {
+ break
+ }
+
// Attempt to insert the newly received by checking if the parent exists.
// if the parent exists we process the block and propagate to our peers
// if the parent does not exists we delegate to the downloader.