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authorSonic <sonic@dexon.org>2018-12-27 16:25:45 +0800
committerWei-Ning Huang <w@dexon.org>2019-04-09 21:32:55 +0800
commit10d8d26ea0c2764c54db6fc2f56374a67f409de6 (patch)
tree51c6e828d57d2ccc58621835eaf85301e1f2d477
parentc249cbfec96083833025efa7dee5fe3fb176309a (diff)
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dex/downloader: fix bug when syncing (#106)
Since blocks will interleave around round change, we will probably need to verify blocks at previous round.
-rw-r--r--dex/downloader/downloader.go15
1 files changed, 13 insertions, 2 deletions
diff --git a/dex/downloader/downloader.go b/dex/downloader/downloader.go
index 809fe7e4a..6ff8c122e 100644
--- a/dex/downloader/downloader.go
+++ b/dex/downloader/downloader.go
@@ -480,9 +480,9 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, number ui
return fmt.Errorf("origin header not exists, number: %d", origin)
}
- // prepare state origin - 2
+ // prepare state origin - 3
d.gov = newGovernance(govState)
- for i := uint64(0); i < 3; i++ {
+ for i := uint64(0); i < 4; i++ {
if originHeader.Round >= i {
h := d.gov.GetRoundHeight(originHeader.Round - i)
s, err := d.lightchain.GetGovStateByNumber(h)
@@ -494,6 +494,17 @@ func (d *Downloader) syncWithPeer(p *peerConnection, hash common.Hash, number ui
}
d.verifierCache = dexCore.NewTSigVerifierCache(d.gov, 5)
+
+ // warm up verifierCache
+ if originHeader.Round > 0 {
+ ok, err := d.verifierCache.Update(originHeader.Round - 1)
+ if err != nil {
+ return err
+ }
+ if !ok {
+ return fmt.Errorf("can not update verifier cache")
+ }
+ }
}
// Initiate the sync using a concurrent header and content retrieval algorithm