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[release/1.4.11] eth, eth/downloader: better remote head tracking

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(cherry picked from commit 1dd272080d)

Conflicts:
	eth/handler.go
	eth/sync.go
This commit is contained in:
Péter Szilágyi
2016-07-25 15:14:14 +03:00
committed by Jeffrey Wilcke
parent 65da8f601f
commit 48709d5340
6 changed files with 62 additions and 51 deletions
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7
eth/downloader/downloader.go
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@@ -236,12 +236,12 @@ func (d *Downloader) Synchronising() bool {
// RegisterPeer injects a new download peer into the set of block source to be
// used for fetching hashes and blocks from.
func (d *Downloader) RegisterPeer(id string, version int, head common.Hash,
func (d *Downloader) RegisterPeer(id string, version int, currentHead currentHeadRetrievalFn,
getRelHeaders relativeHeaderFetcherFn, getAbsHeaders absoluteHeaderFetcherFn, getBlockBodies blockBodyFetcherFn,
getReceipts receiptFetcherFn, getNodeData stateFetcherFn) error {
glog.V(logger.Detail).Infoln("Registering peer", id)
if err := d.peers.Register(newPeer(id, version, head, getRelHeaders, getAbsHeaders, getBlockBodies, getReceipts, getNodeData)); err != nil {
if err := d.peers.Register(newPeer(id, version, currentHead, getRelHeaders, getAbsHeaders, getBlockBodies, getReceipts, getNodeData)); err != nil {
glog.V(logger.Error).Infoln("Register failed:", err)
return err
}
@@ -501,7 +501,8 @@ func (d *Downloader) fetchHeight(p *peer) (*types.Header, error) {
glog.V(logger.Debug).Infof("%v: retrieving remote chain height", p)
// Request the advertised remote head block and wait for the response
go p.getRelHeaders(p.head, 1, 0, false)
head, _ := p.currentHead()
go p.getRelHeaders(head, 1, 0, false)
timeout := time.After(d.requestTTL())
for {