Make sure to stop retries for mirror consumers when not leader and through old control messages.

Signed-off-by: Derek Collison <derek@nats.io>

server/stream.go

@@ -1188,6 +1188,13 @@ func (mset *stream) processInboundMirrorMsg(m *inMsg) bool {
 		return false
 	}
 
+	// Ignore from old subscriptions.
+	// The reason we can not just compare subs is that on cross account imports they will not match.
+	if !mset.mirror.isCurrentSub(m.rply) {
+		mset.mu.Unlock()
+		return false
+	}
+
 	node := mset.node
 
 	// Check for heartbeats and flow control messages.
@@ -1210,13 +1217,6 @@ func (mset *stream) processInboundMirrorMsg(m *inMsg) bool {
 		return !needsRetry
 	}
 
-	// Ignore from old subscriptions.
-	// The reason we can not just compare subs is that on cross account imports they will not match.
-	if !mset.mirror.isCurrentSub(m.rply) {
-		mset.mu.Unlock()
-		return false
-	}
-
 	mset.mirror.last = time.Now()
 	sseq, dseq, dc, ts, pending := replyInfo(m.rply)
 
@@ -1337,6 +1337,11 @@ func (mset *stream) setupMirrorConsumer() error {
 		}
 		// Make sure to delete any prior consumers if we know about them.
 		mset.removeInternalConsumer(mset.mirror)
+
+		// If we are no longer the leader stop trying.
+		if !mset.isLeader() {
+			return nil
+		}
 	}
 
 	// Determine subjects etc.
@@ -1395,7 +1400,7 @@ func (mset *stream) setupMirrorConsumer() error {
 
 	respCh := make(chan *JSApiConsumerCreateResponse, 1)
 	reply := infoReplySubject()
-	mset.subscribeInternal(reply, func(sub *subscription, c *client, subject, reply string, rmsg []byte) {
+	crSub, _ := mset.subscribeInternal(reply, func(sub *subscription, c *client, subject, reply string, rmsg []byte) {
 		mset.unsubscribe(sub)
 		_, msg := c.msgParts(rmsg)
 
@@ -1467,7 +1472,8 @@ func (mset *stream) setupMirrorConsumer() error {
 				mset.mu.Unlock()
 			}
 			mset.setMirrorErr(ccr.Error)
-		case <-time.After(5 * time.Second):
+		case <-time.After(10 * time.Second):
+			mset.unsubscribe(crSub)
 			return
 		}
 	}()