diff --git a/services/mux_bridge.go b/services/mux_bridge.go
index 153a341..789a6d9 100644
--- a/services/mux_bridge.go
+++ b/services/mux_bridge.go
@@ -15,13 +15,16 @@ import (
 type MuxBridge struct {
 	cfg                MuxBridgeArgs
 	clientControlConns utils.ConcurrentMap
+	router             utils.ClientKeyRouter
 }
 
 func NewMuxBridge() Service {
-	return &MuxBridge{
+	b := &MuxBridge{
 		cfg:                MuxBridgeArgs{},
 		clientControlConns: utils.NewConcurrentMap(),
 	}
+	b.router = utils.NewClientKeyRouter(&b.clientControlConns, 50000)
+	return b
 }
 
 func (s *MuxBridge) InitService() {
@@ -118,6 +121,9 @@ func (s *MuxBridge) callback(inConn net.Conn, serverID, key string) {
 		if try == 0 {
 			break
 		}
+		if key == "*" {
+			key = s.router.GetKey()
+		}
 		session, ok := s.clientControlConns.Get(key)
 		if !ok {
 			log.Printf("client %s session not exists for server stream %s", key, serverID)
diff --git a/utils/structs.go b/utils/structs.go
index 93c81db..2d830ba 100644
--- a/utils/structs.go
+++ b/utils/structs.go
@@ -773,3 +773,45 @@ func (cm *ConnManager) RemoveAll() {
 		cm.Remove(k)
 	}
 }
+
+type ClientKeyRouter struct {
+	keyChan chan string
+	ctrl    *ConcurrentMap
+	lock    *sync.Mutex
+}
+
+func NewClientKeyRouter(ctrl *ConcurrentMap, size int) ClientKeyRouter {
+	return ClientKeyRouter{
+		keyChan: make(chan string, size),
+		ctrl:    ctrl,
+		lock:    &sync.Mutex{},
+	}
+}
+func (c *ClientKeyRouter) GetKey() string {
+	defer c.lock.Unlock()
+	c.lock.Lock()
+	if len(c.keyChan) == 0 {
+	EXIT:
+		for _, k := range c.ctrl.Keys() {
+			select {
+			case c.keyChan <- k:
+			default:
+				goto EXIT
+			}
+		}
+	}
+	for {
+		if len(c.keyChan) == 0 {
+			return "*"
+		}
+		select {
+		case key := <-c.keyChan:
+			if c.ctrl.Has(key) {
+				return key
+			}
+		default:
+			return "*"
+		}
+	}
+
+}