raft: transfer leader feature

raft/node.go

@@ -306,7 +306,7 @@ func (n *node) run(r *raft) {
 			r.Step(m)
 		case m := <-n.recvc:
 			// filter out response message from unknown From.
-			if _, ok := r.prs[m.From]; ok || !IsResponseMsg(m) {
+			if _, ok := r.prs[m.From]; ok || !IsResponseMsg(m.Type) {
 				r.Step(m) // raft never returns an error
 			}
 		case cc := <-n.confc:
@@ -392,7 +392,7 @@ func (n *node) Propose(ctx context.Context, data []byte) error {
 
 func (n *node) Step(ctx context.Context, m pb.Message) error {
 	// ignore unexpected local messages receiving over network
-	if IsLocalMsg(m) {
+	if IsLocalMsg(m.Type) {
 		// TODO: return an error?
 		return nil
 	}