eth/fetcher: check the origin of filter tasks (#14975)

* eth/fetcher: check the origin of filter task

* eth/fetcher: add some details to fetcher logs

eth/fetcher/fetcher.go

@@ -83,6 +83,7 @@ type announce struct {
 
 // headerFilterTask represents a batch of headers needing fetcher filtering.
 type headerFilterTask struct {
+	peer    string          // The source peer of block headers
 	headers []*types.Header // Collection of headers to filter
 	time    time.Time       // Arrival time of the headers
 }
@@ -90,6 +91,7 @@ type headerFilterTask struct {
 // headerFilterTask represents a batch of block bodies (transactions and uncles)
 // needing fetcher filtering.
 type bodyFilterTask struct {
+	peer         string                 // The source peer of block bodies
 	transactions [][]*types.Transaction // Collection of transactions per block bodies
 	uncles       [][]*types.Header      // Collection of uncles per block bodies
 	time         time.Time              // Arrival time of the blocks' contents
@@ -218,8 +220,8 @@ func (f *Fetcher) Enqueue(peer string, block *types.Block) error {
 
 // FilterHeaders extracts all the headers that were explicitly requested by the fetcher,
 // returning those that should be handled differently.
-func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*types.Header {
-	log.Trace("Filtering headers", "headers", len(headers))
+func (f *Fetcher) FilterHeaders(peer string, headers []*types.Header, time time.Time) []*types.Header {
+	log.Trace("Filtering headers", "peer", peer, "headers", len(headers))
 
 	// Send the filter channel to the fetcher
 	filter := make(chan *headerFilterTask)
@@ -231,7 +233,7 @@ func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*type
 	}
 	// Request the filtering of the header list
 	select {
-	case filter <- &headerFilterTask{headers: headers, time: time}:
+	case filter <- &headerFilterTask{peer: peer, headers: headers, time: time}:
 	case <-f.quit:
 		return nil
 	}
@@ -246,8 +248,8 @@ func (f *Fetcher) FilterHeaders(headers []*types.Header, time time.Time) []*type
 
 // FilterBodies extracts all the block bodies that were explicitly requested by
 // the fetcher, returning those that should be handled differently.
-func (f *Fetcher) FilterBodies(transactions [][]*types.Transaction, uncles [][]*types.Header, time time.Time) ([][]*types.Transaction, [][]*types.Header) {
-	log.Trace("Filtering bodies", "txs", len(transactions), "uncles", len(uncles))
+func (f *Fetcher) FilterBodies(peer string, transactions [][]*types.Transaction, uncles [][]*types.Header, time time.Time) ([][]*types.Transaction, [][]*types.Header) {
+	log.Trace("Filtering bodies", "peer", peer, "txs", len(transactions), "uncles", len(uncles))
 
 	// Send the filter channel to the fetcher
 	filter := make(chan *bodyFilterTask)
@@ -259,7 +261,7 @@ func (f *Fetcher) FilterBodies(transactions [][]*types.Transaction, uncles [][]*
 	}
 	// Request the filtering of the body list
 	select {
-	case filter <- &bodyFilterTask{transactions: transactions, uncles: uncles, time: time}:
+	case filter <- &bodyFilterTask{peer: peer, transactions: transactions, uncles: uncles, time: time}:
 	case <-f.quit:
 		return nil, nil
 	}
@@ -444,7 +446,7 @@ func (f *Fetcher) loop() {
 				hash := header.Hash()
 
 				// Filter fetcher-requested headers from other synchronisation algorithms
-				if announce := f.fetching[hash]; announce != nil && f.fetched[hash] == nil && f.completing[hash] == nil && f.queued[hash] == nil {
+				if announce := f.fetching[hash]; announce != nil && announce.origin == task.peer && f.fetched[hash] == nil && f.completing[hash] == nil && f.queued[hash] == nil {
 					// If the delivered header does not match the promised number, drop the announcer
 					if header.Number.Uint64() != announce.number {
 						log.Trace("Invalid block number fetched", "peer", announce.origin, "hash", header.Hash(), "announced", announce.number, "provided", header.Number)
@@ -523,7 +525,7 @@ func (f *Fetcher) loop() {
 						txnHash := types.DeriveSha(types.Transactions(task.transactions[i]))
 						uncleHash := types.CalcUncleHash(task.uncles[i])
 
-						if txnHash == announce.header.TxHash && uncleHash == announce.header.UncleHash {
+						if txnHash == announce.header.TxHash && uncleHash == announce.header.UncleHash && announce.origin == task.peer {
 							// Mark the body matched, reassemble if still unknown
 							matched = true
 

eth/handler.go

@@ -450,7 +450,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 				return nil
 			}
 			// Irrelevant of the fork checks, send the header to the fetcher just in case
-			headers = pm.fetcher.FilterHeaders(headers, time.Now())
+			headers = pm.fetcher.FilterHeaders(p.id, headers, time.Now())
 		}
 		if len(headers) > 0 || !filter {
 			err := pm.downloader.DeliverHeaders(p.id, headers)
@@ -503,7 +503,7 @@ func (pm *ProtocolManager) handleMsg(p *peer) error {
 		// Filter out any explicitly requested bodies, deliver the rest to the downloader
 		filter := len(trasactions) > 0 || len(uncles) > 0
 		if filter {
-			trasactions, uncles = pm.fetcher.FilterBodies(trasactions, uncles, time.Now())
+			trasactions, uncles = pm.fetcher.FilterBodies(p.id, trasactions, uncles, time.Now())
 		}
 		if len(trasactions) > 0 || len(uncles) > 0 || !filter {
 			err := pm.downloader.DeliverBodies(p.id, trasactions, uncles)