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les, light: add block availability check for ODR requests

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This commit is contained in:
Zsolt Felfoldi
2016-12-10 06:50:36 +01:00
parent c57c54ce96
commit f12f8a6c14
7 changed files with 71 additions and 14 deletions
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12
les/fetcher.go
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@ -200,6 +200,12 @@ func (f *lightFetcher) syncLoop() {
// addPeer adds a new peer to the fetcher's peer set
func (f *lightFetcher) addPeer(p *peer) {
p.lock.Lock()
p.hasBlock = func(hash common.Hash, number uint64) bool {
return f.peerHasBlock(p, hash, number)
}
p.lock.Unlock()
f.lock.Lock()
defer f.lock.Unlock()
@ -208,6 +214,10 @@ func (f *lightFetcher) addPeer(p *peer) {
// removePeer removes a new peer from the fetcher's peer set
func (f *lightFetcher) removePeer(p *peer) {
p.lock.Lock()
p.hasBlock = nil
p.lock.Unlock()
f.lock.Lock()
defer f.lock.Unlock()
@ -315,7 +325,7 @@ func (f *lightFetcher) announce(p *peer, head *announceData) {
// based on its announcements
func (f *lightFetcher) peerHasBlock(p *peer, hash common.Hash, number uint64) bool {
f.lock.Lock()
defer f.lock.Lock()
defer f.lock.Unlock()
fp := f.peers[p]
if fp == nil || fp.root == nil {