p2p/discover: remove unused field Node.activeStamp

p2p/discover/node.go

@@ -14,8 +14,6 @@ import (
 	"strconv"
 	"strings"
 	"sync"
-	"sync/atomic"
-	"time"
 
 	"github.com/ethereum/go-ethereum/crypto"
 	"github.com/ethereum/go-ethereum/crypto/secp256k1"
@@ -31,9 +29,6 @@ type Node struct {
 
 	DiscPort int // UDP listening port for discovery protocol
 	TCPPort  int // TCP listening port for RLPx
-
-	// this must be set/read using atomic load and store.
-	activeStamp int64
 }
 
 func newNode(id NodeID, addr *net.UDPAddr) *Node {
@@ -50,16 +45,6 @@ func (n *Node) isValid() bool {
 	return !n.IP.IsMulticast() && !n.IP.IsUnspecified() && n.TCPPort != 0 && n.DiscPort != 0
 }
 
-func (n *Node) bumpActive() {
-	stamp := time.Now().Unix()
-	atomic.StoreInt64(&n.activeStamp, stamp)
-}
-
-func (n *Node) active() time.Time {
-	stamp := atomic.LoadInt64(&n.activeStamp)
-	return time.Unix(stamp, 0)
-}
-
 func (n *Node) addr() *net.UDPAddr {
 	return &net.UDPAddr{IP: n.IP, Port: n.DiscPort}
 }

p2p/discover/table.go

@@ -326,7 +326,6 @@ outer:
 func (b *bucket) bump(n *Node) bool {
 	for i := range b.entries {
 		if b.entries[i].ID == n.ID {
-			n.bumpActive()
 			// move it to the front
 			copy(b.entries[1:], b.entries[:i])
 			b.entries[0] = n