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eth/downloader: use intermediate variable for better readability (#17510)

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Wenbiao Zheng 2018-09-29 15:13:39 -05:00 committed by Felix Lange
parent ffca6dfe01
commit 024b22c30e
1 changed files with 8 additions and 4 deletions
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12
eth/downloader/downloader.go
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@ -658,8 +658,10 @@ func (d *Downloader) findAncestor(p *peerConnection, height uint64) (uint64, err
continue continue
} }
// Otherwise check if we already know the header or not // Otherwise check if we already know the header or not
if (d.mode == FullSync && d.blockchain.HasBlock(headers[i].Hash(), headers[i].Number.Uint64())) || (d.mode != FullSync && d.lightchain.HasHeader(headers[i].Hash(), headers[i].Number.Uint64())) { h := headers[i].Hash()
number, hash = headers[i].Number.Uint64(), headers[i].Hash() n := headers[i].Number.Uint64()
if (d.mode == FullSync && d.blockchain.HasBlock(h, n)) || (d.mode != FullSync && d.lightchain.HasHeader(h, n)) {
number, hash = n, h
// If every header is known, even future ones, the peer straight out lied about its head // If every header is known, even future ones, the peer straight out lied about its head
if number > height && i == limit-1 { if number > height && i == limit-1 {
@ -723,11 +725,13 @@ func (d *Downloader) findAncestor(p *peerConnection, height uint64) (uint64, err
arrived = true arrived = true
// Modify the search interval based on the response // Modify the search interval based on the response
if (d.mode == FullSync && !d.blockchain.HasBlock(headers[0].Hash(), headers[0].Number.Uint64())) || (d.mode != FullSync && !d.lightchain.HasHeader(headers[0].Hash(), headers[0].Number.Uint64())) { h := headers[0].Hash()
n := headers[0].Number.Uint64()
if (d.mode == FullSync && !d.blockchain.HasBlock(h, n)) || (d.mode != FullSync && !d.lightchain.HasHeader(h, n)) {
end = check end = check
break break
} }
header := d.lightchain.GetHeaderByHash(headers[0].Hash()) // Independent of sync mode, header surely exists header := d.lightchain.GetHeaderByHash(h) // Independent of sync mode, header surely exists
if header.Number.Uint64() != check { if header.Number.Uint64() != check {
p.log.Debug("Received non requested header", "number", header.Number, "hash", header.Hash(), "request", check) p.log.Debug("Received non requested header", "number", header.Number, "hash", header.Hash(), "request", check)
return 0, errBadPeer return 0, errBadPeer