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eth/downloader: short circuit sync if head hash is banned

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Péter Szilágyi 2015-05-29 21:15:28 +03:00
parent 84bc93d8cb
commit abdfcda4dd
1 changed files with 4 additions and 0 deletions
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4
eth/downloader/downloader.go
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@ -165,6 +165,10 @@ func (d *Downloader) Synchronise(id string, hash common.Hash) error {
}
defer atomic.StoreInt32(&d.synchronising, 0)
// If the head hash is banned, terminate immediately
if d.banned.Has(hash) {
return ErrInvalidChain
}
// Post a user notification of the sync (only once per session)
if atomic.CompareAndSwapInt32(&d.notified, 0, 1) {
glog.V(logger.Info).Infoln("Block synchronisation started")