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eth: announce block after sync cycle (star topology) #13883

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Apr 10, 2017
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eth: announce block after sync cycle (star topology) #13883

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10 changes: 9 additions & 1 deletion eth/sync.go
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Original file line number Diff line number Diff line change
Expand Up @@ -189,7 +189,15 @@ func (pm *ProtocolManager) synchronise(peer *peer) {
return
}
atomic.StoreUint32(&pm.synced, 1) // Mark initial sync done

if head := pm.blockchain.CurrentBlock(); head.NumberU64() > 0 {
// We've completed a sync cycle, notify all peers of new state. This path is
// essential in star-topology networks where a gateway node needs to notify
// all its out-of-date peers of the availability of a new block. This failure
// scenario will most often crop up in private and hackathon networks with
// degenerate connectivity, but it should be healthy for the mainnet too to
// more reliably update peers or the local TD state.
go pm.BroadcastBlock(head, false)
}
// If fast sync was enabled, and we synced up, disable it
if atomic.LoadUint32(&pm.fastSync) == 1 {
// Disable fast sync if we indeed have something in our chain
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