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optimize the judge of invalide notification.number (#22658)

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Don't bother fetching genesis

Co-authored-by: wuff1996 <33193253+wuff1996@users.noreply.github.com>
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XuDon9 Liu AKA Rapper Of CN background diablo & revelations, a man optimistic, negative, silent, active, Taoism 2021-11-01 02:38:48 +08:00 committed by GitHub
parent 31870a59ff
commit 410e731bea
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1 changed files with 7 additions and 6 deletions
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5
eth/fetcher/block_fetcher.go
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@ -391,14 +391,15 @@ func (f *BlockFetcher) loop() {
blockAnnounceDOSMeter.Mark(1)
break
}
if notification.number == 0 {
break
}
// If we have a valid block number, check that it's potentially useful
if notification.number > 0 {
if dist := int64(notification.number) - int64(f.chainHeight()); dist < -maxUncleDist || dist > maxQueueDist {
log.Debug("Peer discarded announcement", "peer", notification.origin, "number", notification.number, "hash", notification.hash, "distance", dist)
blockAnnounceDropMeter.Mark(1)
break
}
}
// All is well, schedule the announce if block's not yet downloading
if _, ok := f.fetching[notification.hash]; ok {
break