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authorPéter Szilágyi <peterke@gmail.com>2015-06-09 00:24:56 +0800
committerPéter Szilágyi <peterke@gmail.com>2015-06-09 00:24:56 +0800
commitfdccce781e94819ec9dc13ef6540a33efd3b26c6 (patch)
tree5d5a9c8c3f60146c34138088727143de86270121 /eth/handler.go
parent8c012e103faf2283e9be3fab26dbcf4cc63c09da (diff)
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eth: fetch announced hashes from origin, periodically
Diffstat (limited to 'eth/handler.go')
-rw-r--r--eth/handler.go54
1 files changed, 25 insertions, 29 deletions
diff --git a/eth/handler.go b/eth/handler.go
index 63ebc4bdd..7e9ec593a 100644
--- a/eth/handler.go
+++ b/eth/handler.go
@@ -21,7 +21,8 @@ import (
const (
forceSyncCycle = 10 * time.Second // Time interval to force syncs, even if few peers are available
blockProcCycle = 500 * time.Millisecond // Time interval to check for new blocks to process
- blockArrivalTimeout = 500 * time.Millisecond // Time allowance before an announced block is explicitly requested
+ notifyCheckCycle = 100 * time.Millisecond // Time interval to allow hash notifies to fulfill before hard fetching
+ notifyArriveTimeout = 500 * time.Millisecond // Time allowance before an announced block is explicitly requested
minDesiredPeerCount = 5 // Amount of peers desired to start syncing
blockProcAmount = 256
)
@@ -57,6 +58,7 @@ type ProtocolManager struct {
minedBlockSub event.Subscription
newPeerCh chan *peer
+ newHashCh chan []*blockAnnounce
quitSync chan struct{}
// wait group is used for graceful shutdowns during downloading
// and processing
@@ -74,6 +76,7 @@ func NewProtocolManager(protocolVersion, networkId int, mux *event.TypeMux, txpo
downloader: downloader,
peers: newPeerSet(),
newPeerCh: make(chan *peer, 1),
+ newHashCh: make(chan []*blockAnnounce, 1),
quitSync: make(chan struct{}),
}
@@ -121,7 +124,8 @@ func (pm *ProtocolManager) Start() {
pm.minedBlockSub = pm.eventMux.Subscribe(core.NewMinedBlockEvent{})
go pm.minedBroadcastLoop()
- go pm.update()
+ go pm.syncer()
+ go pm.fetcher()
}
func (pm *ProtocolManager) Stop() {
@@ -302,32 +306,24 @@ func (self *ProtocolManager) handleMsg(p *peer) error {
p.blockHashes.Add(hash)
p.recentHash = hash
}
- // Wait a bit for potentially receiving the blocks, fetch if not
- go func() {
- time.Sleep(blockArrivalTimeout)
-
- // Drop all the hashes that are already known
- unknown := make([]common.Hash, 0, len(hashes))
- for _, hash := range hashes {
- if !self.chainman.HasBlock(hash) {
- unknown = append(unknown, hash)
- }
- }
- if len(unknown) == 0 {
- return
- }
- // Retrieve all the unknown hashes
- if err := p.requestBlocks(unknown); err != nil {
- glog.V(logger.Debug).Infof("%s: failed to request blocks: %v", p.id, err)
+ // Schedule all the unknown hashes for retrieval
+ unknown := make([]common.Hash, 0, len(hashes))
+ for _, hash := range hashes {
+ if !self.chainman.HasBlock(hash) {
+ unknown = append(unknown, hash)
}
- if glog.V(logger.Detail) {
- hashes := make([]string, len(unknown))
- for i, hash := range unknown {
- hashes[i] = fmt.Sprintf("%x", hash[:4])
- }
- glog.Infof("%s: requested blocks explicitly: %v", p.id, hashes)
+ }
+ announces := make([]*blockAnnounce, len(unknown))
+ for i, hash := range unknown {
+ announces[i] = &blockAnnounce{
+ hash: hash,
+ peer: p,
+ time: time.Now(),
}
- }()
+ }
+ if len(announces) > 0 {
+ self.newHashCh <- announces
+ }
case NewBlockMsg:
var request newBlockMsgData
@@ -407,13 +403,13 @@ func (pm *ProtocolManager) BroadcastBlock(hash common.Hash, block *types.Block)
split := int(math.Sqrt(float64(len(peers))))
transfer := peers[:split]
- nofity := peers[split:]
+ notify := peers[split:]
// Send out the data transfers and the notifications
- for _, peer := range nofity {
+ for _, peer := range notify {
peer.sendNewBlockHashes([]common.Hash{hash})
}
- glog.V(logger.Detail).Infoln("broadcast hash to", len(nofity), "peers.")
+ glog.V(logger.Detail).Infoln("broadcast hash to", len(notify), "peers.")
for _, peer := range transfer {
peer.sendNewBlock(block)