diff --git a/cli/client.go b/cli/client.go
index d69d867..af9757d 100644
--- a/cli/client.go
+++ b/cli/client.go
@@ -50,7 +50,7 @@ func Create(addr string, groupid string) (*Client, error) {
 		timerReceive: make(chan []string, 100),
 	}
 
-	conn.Write([]byte("groupid " + groupid + "\r\n"))
+	client.send("groupid " + groupid)
 	client.init()
 	return &client, err
 }
@@ -64,15 +64,15 @@ func (c *Client) reconn() (err error) {
 			continue
 		} else if err == nil {
 			c.conn = conn
-			conn.Write([]byte("groupid " + c.groupid + "\r\n"))
+			c.send("groupid " + c.groupid)
 			go c.receive()
 
 			// 重新订阅
 			for topic, _ := range c.subFun {
-				c.subscribes(topic)
+				c.Subscribe(topic, nil)
 			}
 			for topic, _ := range c.timerFun {
-				c.timer(topic)
+				c.Timer(topic, nil)
 			}
 			break
 		}
@@ -100,16 +100,23 @@ func (c *Client) init() {
 				}
 				fun()
 			}
-
 		}
 	}()
 
 	go c.receive()
 }
 
+/*
+// subscribe topic
+---
+subscribe x y z
+---
+*/
 func (c *Client) Subscribe(topic string, fun func(v string)) {
-	c.subFun[topic] = fun
-	c.subscribes(topic)
+	c.send("subscribe " + topic)
+	if fun != nil {
+		c.subFun[topic] = fun
+	}
 }
 
 /*
@@ -135,13 +142,15 @@ $24
 ---
 */
 func (c *Client) Publish(topic string, message string) error {
-	c.send("publish", topic, message)
-	return nil
+	return c.send("publish", topic, message)
+}
+
+func (c *Client) Broadcast(topic string, message string) error {
+	return c.send("broadcast", topic, message)
 }
 
 func (c *Client) Daly(topic string, message string, daly int) error {
-	c.send("daly", topic, message, strconv.Itoa(daly))
-	return nil
+	return c.send("daly", topic, message, strconv.Itoa(daly))
 }
 
 /*func (c *Client) Timer(topic string, expr string, fun func()) {
@@ -149,16 +158,9 @@ func (c *Client) Daly(topic string, message string, daly int) error {
 	c.send("timer", topic, expr, "x")
 }*/
 func (c *Client) Timer(topic string, fun func()) {
-	c.timerFun[topic] = fun
-	c.send("timer", topic)
-}
-func (c *Client) TimerSingle(topic string, expr string, fun func()) {
-	c.timerFun[topic] = fun
-	c.send("timer", topic, expr, "a")
-}
-
-// todo: save client timer‘s info
-func (c *Client) timer(topic string) {
+	if fun != nil {
+		c.timerFun[topic] = fun
+	}
 	c.send("timer", topic)
 }
 
@@ -171,13 +173,7 @@ func (c *Client) Close() {
 	c.conn.Close()
 }
 
-/*
-// subscribe topic
----
-subscribe x y z
----
-*/
-func (c *Client) subscribes(topics ...string) error {
+/*func (c *Client) subscribes(topics ...string) error {
 	if len(topics) == 0 {
 		return nil
 	}
@@ -188,7 +184,7 @@ func (c *Client) subscribes(topics ...string) error {
 	}
 	c.send(messages)
 	return nil
-}
+}*/
 
 /*
 send socket message :
diff --git a/cli_test.go b/cli_test.go
index 08d4ffe..d28820f 100644
--- a/cli_test.go
+++ b/cli_test.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"log"
+	"strconv"
 	"testing"
 	"time"
 	"zhub/cli"
@@ -40,14 +41,22 @@ func TestCli(t *testing.T) {
 }
 
 func TestTimer(t *testing.T) {
+	go func() {
+		client, _ := cli.Create(addr, "topic-2")
+
+		client.Subscribe("ax", func(v string) {
+			log.Println("topic-1-ax: " + v)
+		})
+	}()
 	go func() {
 		client, _ := cli.Create(addr, "topic-1")
-		client.Timer("a", func() {
-			log.Println("client-1 收到 a 的定时消息")
+
+		client.Subscribe("ax", func(v string) {
+			log.Println("topic-2-ax: " + v)
 		})
 	}()
 
-	go func() {
+	/*go func() {
 		client, _ := cli.Create(addr, "topic-2")
 		client.Timer("a", func() {
 			log.Println("client-2 收到 a 的定时消息")
@@ -69,7 +78,7 @@ func TestTimer(t *testing.T) {
 		client.Timer("VIP-EXP-EXPIRE", func() {
 			log.Println("client-2 收到 VIP-EXP-EXPIRE 的定时消息")
 		})
-	}()
+	}()*/
 
 	time.Sleep(time.Hour * 3)
 }
@@ -88,8 +97,9 @@ func TestPublish(t *testing.T) {
 	if err != nil {
 		log.Println(err)
 	}
-
-	client.Publish("ax", "a")
+	for i := 0; i < 30_0000; i++ {
+		client.Publish("ax", strconv.Itoa(i))
+	}
 
 	time.Sleep(time.Second)
 }
diff --git a/zsub/msg-consumer.go b/zsub/msg-consumer.go
index 402b1d5..50a67f8 100644
--- a/zsub/msg-consumer.go
+++ b/zsub/msg-consumer.go
@@ -67,6 +67,8 @@ func msgAccept(v Message) {
 		} else {
 			zsub.publish(rcmd[1], rcmd[2])
 		}
+	case "broadcast":
+		zsub.broadcast(rcmd[1], rcmd[2])
 	case "daly":
 		daly(rcmd, c)
 	case "timer":
diff --git a/zsub/zsub.go b/zsub/zsub.go
index 8edfb11..256ea28 100644
--- a/zsub/zsub.go
+++ b/zsub/zsub.go
@@ -17,7 +17,7 @@ var (
 )
 
 type ZSub struct {
-	sync.Mutex
+	sync.RWMutex
 	topics map[string]*ZTopic
 	timers map[string]*ZTimer
 }
@@ -99,9 +99,9 @@ accept topic message
 1、send message to topic's chan
 2、feedback send success to sender, and sending message to topic's subscripts
 */
-func (s *ZSub) publish(topic string, msg string) {
-	s.Lock()
-	defer s.Unlock()
+func (s *ZSub) publish(topic, msg string) {
+	s.RLock()
+	defer s.RUnlock()
 	ztopic := s.topics[topic] //ZTopic
 	if ztopic == nil {
 		return
@@ -110,6 +110,25 @@ func (s *ZSub) publish(topic string, msg string) {
 	ztopic.mcount++
 }
 
+/*
+send broadcast message
+*/
+func (s *ZSub) broadcast(topic, msg string) {
+	s.RLock()
+	defer s.RUnlock()
+
+	ztopic := s.topics[topic] //ZTopic
+	if ztopic == nil {
+		return
+	}
+
+	for _, group := range ztopic.groups {
+		for _, conn := range group.conns {
+			conn.send("message", topic, msg)
+		}
+	}
+}
+
 func (s *ZSub) close(c *ZConn) {
 	// sub
 	for _, topic := range c.topics {