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eth/downloader: fix #15858 by checking if downloader dropPeer function is set (#15992)

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This commit is contained in:
Martin Holst Swende 2018-02-05 14:38:06 +01:00 committed by Péter Szilágyi
parent 0662384d29
commit bc0666fb27
1 changed files with 20 additions and 3 deletions
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23
eth/downloader/downloader.go
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@ -324,8 +324,13 @@ func (d *Downloader) Synchronise(id string, head common.Hash, td *big.Int, mode
errEmptyHeaderSet, errPeersUnavailable, errTooOld,
errInvalidAncestor, errInvalidChain:
log.Warn("Synchronisation failed, dropping peer", "peer", id, "err", err)
d.dropPeer(id)
if d.dropPeer == nil {
// The dropPeer method is nil when `--copydb` is used for a local copy.
// Timeouts can occur if e.g. compaction hits at the wrong time, and can be ignored
log.Warn("Downloader wants to drop peer, but peerdrop-function is not set", "peer", id)
} else {
d.dropPeer(id)
}
default:
log.Warn("Synchronisation failed, retrying", "err", err)
}
@ -853,6 +858,12 @@ func (d *Downloader) fetchHeaders(p *peerConnection, from uint64) error {
getHeaders(from)
case <-timeout.C:
if d.dropPeer == nil {
// The dropPeer method is nil when `--copydb` is used for a local copy.
// Timeouts can occur if e.g. compaction hits at the wrong time, and can be ignored
p.log.Warn("Downloader wants to drop peer, but peerdrop-function is not set", "peer", p.id)
break
}
// Header retrieval timed out, consider the peer bad and drop
p.log.Debug("Header request timed out", "elapsed", ttl)
headerTimeoutMeter.Mark(1)
@ -1071,7 +1082,13 @@ func (d *Downloader) fetchParts(errCancel error, deliveryCh chan dataPack, deliv
setIdle(peer, 0)
} else {
peer.log.Debug("Stalling delivery, dropping", "type", kind)
d.dropPeer(pid)
if d.dropPeer == nil {
// The dropPeer method is nil when `--copydb` is used for a local copy.
// Timeouts can occur if e.g. compaction hits at the wrong time, and can be ignored
peer.log.Warn("Downloader wants to drop peer, but peerdrop-function is not set", "peer", pid)
} else {
d.dropPeer(pid)
}
}
}
}