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-rw-r--r--p2p/discover/database.go17
-rw-r--r--p2p/discover/database_test.go18
-rw-r--r--p2p/discover/table.go6
-rw-r--r--p2p/discover/udp.go2
-rw-r--r--p2p/discover/udp_test.go8
5 files changed, 26 insertions, 25 deletions
diff --git a/p2p/discover/database.go b/p2p/discover/database.go
index b136609f2..6f98de9b4 100644
--- a/p2p/discover/database.go
+++ b/p2p/discover/database.go
@@ -257,7 +257,7 @@ func (db *nodeDB) expireNodes() error {
}
// Skip the node if not expired yet (and not self)
if !bytes.Equal(id[:], db.self[:]) {
- if seen := db.lastPong(id); seen.After(threshold) {
+ if seen := db.bondTime(id); seen.After(threshold) {
continue
}
}
@@ -278,13 +278,18 @@ func (db *nodeDB) updateLastPing(id NodeID, instance time.Time) error {
return db.storeInt64(makeKey(id, nodeDBDiscoverPing), instance.Unix())
}
-// lastPong retrieves the time of the last successful contact from remote node.
-func (db *nodeDB) lastPong(id NodeID) time.Time {
+// bondTime retrieves the time of the last successful pong from remote node.
+func (db *nodeDB) bondTime(id NodeID) time.Time {
return time.Unix(db.fetchInt64(makeKey(id, nodeDBDiscoverPong)), 0)
}
-// updateLastPong updates the last time a remote node successfully contacted.
-func (db *nodeDB) updateLastPong(id NodeID, instance time.Time) error {
+// hasBond reports whether the given node is considered bonded.
+func (db *nodeDB) hasBond(id NodeID) bool {
+ return time.Since(db.bondTime(id)) < nodeDBNodeExpiration
+}
+
+// updateBondTime updates the last pong time of a node.
+func (db *nodeDB) updateBondTime(id NodeID, instance time.Time) error {
return db.storeInt64(makeKey(id, nodeDBDiscoverPong), instance.Unix())
}
@@ -327,7 +332,7 @@ seek:
if n.ID == db.self {
continue seek
}
- if now.Sub(db.lastPong(n.ID)) > maxAge {
+ if now.Sub(db.bondTime(n.ID)) > maxAge {
continue seek
}
for i := range nodes {
diff --git a/p2p/discover/database_test.go b/p2p/discover/database_test.go
index be972fd2c..c4fa44d09 100644
--- a/p2p/discover/database_test.go
+++ b/p2p/discover/database_test.go
@@ -125,13 +125,13 @@ func TestNodeDBFetchStore(t *testing.T) {
t.Errorf("ping: value mismatch: have %v, want %v", stored, inst)
}
// Check fetch/store operations on a node pong object
- if stored := db.lastPong(node.ID); stored.Unix() != 0 {
+ if stored := db.bondTime(node.ID); stored.Unix() != 0 {
t.Errorf("pong: non-existing object: %v", stored)
}
- if err := db.updateLastPong(node.ID, inst); err != nil {
+ if err := db.updateBondTime(node.ID, inst); err != nil {
t.Errorf("pong: failed to update: %v", err)
}
- if stored := db.lastPong(node.ID); stored.Unix() != inst.Unix() {
+ if stored := db.bondTime(node.ID); stored.Unix() != inst.Unix() {
t.Errorf("pong: value mismatch: have %v, want %v", stored, inst)
}
// Check fetch/store operations on a node findnode-failure object
@@ -224,8 +224,8 @@ func TestNodeDBSeedQuery(t *testing.T) {
if err := db.updateNode(seed.node); err != nil {
t.Fatalf("node %d: failed to insert: %v", i, err)
}
- if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
- t.Fatalf("node %d: failed to insert lastPong: %v", i, err)
+ if err := db.updateBondTime(seed.node.ID, seed.pong); err != nil {
+ t.Fatalf("node %d: failed to insert bondTime: %v", i, err)
}
}
@@ -332,8 +332,8 @@ func TestNodeDBExpiration(t *testing.T) {
if err := db.updateNode(seed.node); err != nil {
t.Fatalf("node %d: failed to insert: %v", i, err)
}
- if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
- t.Fatalf("node %d: failed to update pong: %v", i, err)
+ if err := db.updateBondTime(seed.node.ID, seed.pong); err != nil {
+ t.Fatalf("node %d: failed to update bondTime: %v", i, err)
}
}
// Expire some of them, and check the rest
@@ -365,8 +365,8 @@ func TestNodeDBSelfExpiration(t *testing.T) {
if err := db.updateNode(seed.node); err != nil {
t.Fatalf("node %d: failed to insert: %v", i, err)
}
- if err := db.updateLastPong(seed.node.ID, seed.pong); err != nil {
- t.Fatalf("node %d: failed to update pong: %v", i, err)
+ if err := db.updateBondTime(seed.node.ID, seed.pong); err != nil {
+ t.Fatalf("node %d: failed to update bondTime: %v", i, err)
}
}
// Expire the nodes and make sure self has been evacuated too
diff --git a/p2p/discover/table.go b/p2p/discover/table.go
index 17c9db777..6509326e6 100644
--- a/p2p/discover/table.go
+++ b/p2p/discover/table.go
@@ -455,7 +455,7 @@ func (tab *Table) loadSeedNodes(bond bool) {
}
for i := range seeds {
seed := seeds[i]
- age := log.Lazy{Fn: func() interface{} { return time.Since(tab.db.lastPong(seed.ID)) }}
+ age := log.Lazy{Fn: func() interface{} { return time.Since(tab.db.bondTime(seed.ID)) }}
log.Debug("Found seed node in database", "id", seed.ID, "addr", seed.addr(), "age", age)
tab.add(seed)
}
@@ -596,7 +596,7 @@ func (tab *Table) bond(pinged bool, id NodeID, addr *net.UDPAddr, tcpPort uint16
}
// Start bonding if we haven't seen this node for a while or if it failed findnode too often.
node, fails := tab.db.node(id), tab.db.findFails(id)
- age := time.Since(tab.db.lastPong(id))
+ age := time.Since(tab.db.bondTime(id))
var result error
if fails > 0 || age > nodeDBNodeExpiration {
log.Trace("Starting bonding ping/pong", "id", id, "known", node != nil, "failcount", fails, "age", age)
@@ -663,7 +663,7 @@ func (tab *Table) ping(id NodeID, addr *net.UDPAddr) error {
if err := tab.net.ping(id, addr); err != nil {
return err
}
- tab.db.updateLastPong(id, time.Now())
+ tab.db.updateBondTime(id, time.Now())
return nil
}
diff --git a/p2p/discover/udp.go b/p2p/discover/udp.go
index 5cc0b3d74..524c6e498 100644
--- a/p2p/discover/udp.go
+++ b/p2p/discover/udp.go
@@ -613,7 +613,7 @@ func (req *findnode) handle(t *udp, from *net.UDPAddr, fromID NodeID, mac []byte
if expired(req.Expiration) {
return errExpired
}
- if age := time.Since(t.db.lastPong(fromID)); age > nodeDBNodeExpiration {
+ if !t.db.hasBond(fromID) {
// No bond exists, we don't process the packet. This prevents
// an attack vector where the discovery protocol could be used
// to amplify traffic in a DDOS attack. A malicious actor
diff --git a/p2p/discover/udp_test.go b/p2p/discover/udp_test.go
index 3ffa5c4dd..db9804f7b 100644
--- a/p2p/discover/udp_test.go
+++ b/p2p/discover/udp_test.go
@@ -247,12 +247,8 @@ func TestUDP_findnode(t *testing.T) {
// ensure there's a bond with the test node,
// findnode won't be accepted otherwise.
- test.table.db.updateNode(NewNode(
- PubkeyID(&test.remotekey.PublicKey),
- test.remoteaddr.IP,
- uint16(test.remoteaddr.Port),
- 99,
- ))
+ test.table.db.updateBondTime(PubkeyID(&test.remotekey.PublicKey), time.Now())
+
// check that closest neighbors are returned.
test.packetIn(nil, findnodePacket, &findnode{Target: testTarget, Expiration: futureExp})
expected := test.table.closest(targetHash, bucketSize)
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-13 04:21:24 +0800