forked from cerc-io/plugeth
eth/downloader: short circuit sync if head hash is banned
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@ -165,6 +165,10 @@ func (d *Downloader) Synchronise(id string, hash common.Hash) error {
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}
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defer atomic.StoreInt32(&d.synchronising, 0)
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// If the head hash is banned, terminate immediately
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if d.banned.Has(hash) {
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return ErrInvalidChain
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}
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// Post a user notification of the sync (only once per session)
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if atomic.CompareAndSwapInt32(&d.notified, 0, 1) {
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glog.V(logger.Info).Infoln("Block synchronisation started")
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