diff --git a/cli/zdb-client.go b/cli/client.go
similarity index 82%
rename from cli/zdb-client.go
rename to cli/client.go
index 51f344e..26dddc7 100644
--- a/cli/zdb-client.go
+++ b/cli/client.go
@@ -12,21 +12,21 @@ import (
 	"time"
 )
 
-var (
-	reconnect    = 0
-	subFun       = make(map[string]func(v string))
-	timerFun     = make(map[string]func())
-	chSend       = make(chan []string, 1000)
-	chReceive    = make(chan []string, 1000)
-	timerReceive = make(chan []string, 1000)
-)
-
 type Client struct {
-	wlock      sync.Mutex // 写锁
-	rlock      sync.Mutex // 读锁
-	addr       string     // host:port
-	conn       net.Conn   // socket 连接对象
-	createTime time.Time  // 创建时间
+	wlock sync.Mutex // write lock
+	rlock sync.Mutex // read lock
+
+	addr       string    // host:port
+	conn       net.Conn  // socket conn
+	createTime time.Time // client create time
+	groupid    string    // client group id
+
+	subFun   map[string]func(v string) // subscribe topic and callback function
+	timerFun map[string]func()         // subscribe timer amd callback function
+
+	chSend       chan []string // chan of send message
+	chReceive    chan []string // chan of receive message
+	timerReceive chan []string // chan of timer
 }
 
 func Create(addr string, groupid string) (*Client, error) {
@@ -40,7 +40,14 @@ func Create(addr string, groupid string) (*Client, error) {
 		rlock:      sync.Mutex{},
 		addr:       addr,
 		conn:       conn,
+		groupid:    groupid,
 		createTime: time.Now(),
+
+		subFun:       make(map[string]func(v string)),
+		timerFun:     make(map[string]func()),
+		chSend:       make(chan []string, 100),
+		chReceive:    make(chan []string, 100),
+		timerReceive: make(chan []string, 100),
 	}
 
 	conn.Write([]byte("groupid " + groupid + "\r\n"))
@@ -57,8 +64,11 @@ func (c *Client) reconn() (err error) {
 			continue
 		} else if err == nil {
 			c.conn = conn
+			conn.Write([]byte("groupid " + c.groupid + "\r\n"))
 			go c.receive()
-			for topic, _ := range subFun {
+
+			// 重新订阅
+			for topic, _ := range c.subFun {
 				c.subscribes(topic)
 			}
 			break
@@ -72,15 +82,15 @@ func (c *Client) init() {
 	go func() {
 		for {
 			select {
-			case vs := <-chReceive:
-				fun := subFun[vs[1]]
+			case vs := <-c.chReceive:
+				fun := c.subFun[vs[1]]
 				if fun == nil {
 					log.Println("topic received, nothing to do", vs[1], vs[2])
 					continue
 				}
 				fun(vs[2])
-			case vs := <-timerReceive:
-				fun := timerFun[vs[1]]
+			case vs := <-c.timerReceive:
+				fun := c.timerFun[vs[1]]
 				if fun == nil {
 					log.Println("timer received, nothing to do", vs[1])
 					continue
@@ -95,7 +105,7 @@ func (c *Client) init() {
 }
 
 func (c *Client) Subscribe(topic string, fun func(v string)) {
-	subFun[topic] = fun
+	c.subFun[topic] = fun
 	c.subscribes(topic)
 }
 
@@ -110,7 +120,7 @@ func (c *Client) ping() {
 
 // -------------------------------------- pub-sub --------------------------------------
 /*
-发送 主题消息
+send topic message :
 ---
 *3
 $7
@@ -132,12 +142,12 @@ func (c *Client) Daly(topic string, message string, daly int) error {
 }
 
 func (c *Client) Timer(topic string, expr string, fun func()) {
-	timerFun[topic] = fun
+	c.timerFun[topic] = fun
 	c.send("timer", topic, expr)
 }
 
 /*
-// 订阅主题消息
+// subscribe topic
 ---
 subscribe x y z
 ---
@@ -155,7 +165,11 @@ func (c *Client) subscribes(topics ...string) error {
 	return nil
 }
 
-// 发送 socket 消息
+/*
+send socket message :
+if len(vs) equal 1 will send message `vs[0] + "\r\n"`
+else if len(vs) gt 1 will send message `* + len(vs)+ "\r\n"  +"$"+ len(vs[n])+ "\r\n" + vs[n] + "\r\n" ...`
+*/
 func (c *Client) send(vs ...string) (err error) {
 	//chSend <- vs
 	c.wlock.Lock()
@@ -222,11 +236,11 @@ func (c *Client) receive() {
 			}
 
 			if len(vs) == 3 && strings.EqualFold(vs[0], "message") {
-				chReceive <- vs
+				c.chReceive <- vs
 				continue
 			}
 			if len(vs) == 2 && strings.EqualFold(vs[0], "timer") {
-				timerReceive <- vs
+				c.timerReceive <- vs
 				continue
 			}
 
@@ -256,9 +270,6 @@ func (c *Client) set(key string, value interface{}) error {
 	return nil
 }
 
-/*
-
- */
 func (c *Client) get(key string) string {
 
 	return ""
@@ -268,6 +279,8 @@ func (c *Client) get(key string) string {
 
 // ==============================================================================
 
+var reconnect = 0
+
 // client 命令行程序
 func ClientRun(host string, port int) {
 	conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", host, port))
diff --git a/cli/zdb-client_test.go b/cli/zdb-client_test.go
deleted file mode 100644
index fc89430..0000000
--- a/cli/zdb-client_test.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package cli
-
-import (
-	"testing"
-)
-
-func TestClient(t *testing.T) {
-
-}
diff --git a/cli_test.go b/cli_test.go
index 9188edb..a9b10ef 100644
--- a/cli_test.go
+++ b/cli_test.go
@@ -2,7 +2,6 @@ package main
 
 import (
 	"log"
-	"strconv"
 	"testing"
 	"time"
 	"zhub/cli"
@@ -10,8 +9,7 @@ import (
 
 func TestCli(t *testing.T) {
 	//client, err := cli.Create("39.108.56.246:1216", "")
-	client, err := cli.Create("127.0.0.1:1216", "")
-
+	client, err := cli.Create("127.0.0.1:1216", "topic-x")
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -21,14 +19,44 @@ func TestCli(t *testing.T) {
 		log.Println("收到主题 a 消息 " + v)
 	})
 
-	//
-	client.Timer("t", "* * * * * *")
+	// 定时调度
+	client.Timer("t------------------x", "*/3 * * * * *", func() {
+		log.Println("收到 t------------------x 定时消息")
+	})
 
-	go func() {
-		for i := 0; i < 50000; i++ {
+	/*go func() {
+		for i := 0; i < 100000; i++ {
 			client.Publish("a", strconv.Itoa(i))
 			time.Sleep(time.Second)
 		}
+	}()*/
+
+	client.Subscribe("a", func(v string) {
+		log.Println("收到主题 a 消息 " + v)
+	})
+	client.Daly("a", "x", 3000)
+
+	time.Sleep(time.Hour * 3)
+}
+
+func TestTimer(t *testing.T) {
+	go func() {
+		client, _ := cli.Create("127.0.0.1:1216", "topic-x")
+		client.Timer("t", "*/3 * * * * *", func() {
+			log.Println("=======收到 t 定时消息")
+		})
+
+		client.Timer("t------------------x", "*/3 * * * * *", func() {
+			log.Println("收到 t------------------x 定时消息")
+		})
+	}()
+
+	time.Sleep(time.Second * 5)
+	go func() {
+		client, _ := cli.Create("127.0.0.1:1216", "topic-x")
+		client.Timer("t", "*/5 * * * * *", func() {
+			log.Println("-------收到 t 定时消息")
+		})
 	}()
 
 	time.Sleep(time.Hour * 3)
diff --git a/pkg.bat b/pkg.bat
index ebe4992..543aceb 100644
--- a/pkg.bat
+++ b/pkg.bat
@@ -1,4 +1,4 @@
 SET GOOS=linux
 SET GOARCH=amd64
-go build -o zdb.sh -ldflags "-s -w" ./main.go
-upx -9 zdb.sh
+go build -o zhub.sh -ldflags "-s -w" ./main.go
+upx -9 zhub.sh
diff --git a/zsub/msg-consumer.go b/zsub/msg-consumer.go
index a4b691e..51bf3a9 100644
--- a/zsub/msg-consumer.go
+++ b/zsub/msg-consumer.go
@@ -27,11 +27,21 @@ func msgAccept(v Message) {
 	if len(rcmd) == 1 {
 		switch strings.ToLower(rcmd[0]) {
 		default:
-			// subscribe|unsubscribe|daly
-			if strings.Index(rcmd[0], "subscribe") == 0 || strings.Index(rcmd[0], "unsubscribe") == 0 || strings.Index(rcmd[0], "daly") == 0 {
+			// str start with strs anyone
+			var startWithAny = func(str string, strs ...string) bool {
+				for _, str := range strs {
+					if strings.Index(rcmd[0], str) == 0 {
+						return true
+					}
+				}
+				return false
+			}
+
+			arr := []string{"subscribe", "unsubscribe", "daly", "groupid"}
+			if startWithAny(rcmd[0], arr...) {
 				rcmd = strings.Split(rcmd[0], " ")
 			} else {
-				send(c.conn, "-Error: not supported! (tips: send help)")
+				send(c.conn, "-Error: not supported:"+rcmd[0])
 				return
 			}
 		}
@@ -39,8 +49,10 @@ func msgAccept(v Message) {
 
 	cmd := rcmd[0]
 	switch cmd {
+	case "groupid":
+		c.groupid = rcmd[1]
 	case "subscribe":
-		//subscribe x y z
+		// subscribe x y z
 		for _, topic := range rcmd[1:] {
 			zsub.subscribe(c, topic) // todo: 批量一次订阅
 		}
@@ -57,7 +69,7 @@ func msgAccept(v Message) {
 	case "daly":
 		daly(rcmd, c)
 	case "timer":
-		// todo Timer(rcmd, conn)
+		zsub.timer(rcmd, c)
 	default:
 		send(c.conn, "-Error: default not supported:["+strings.Join(rcmd, " ")+"]")
 		return
@@ -86,7 +98,7 @@ func daly(rcmd []string, c *ZConn) {
 
 var wlock = sync.Mutex{}
 
-// 发送消息
+// send message
 func send(conn *net.Conn, vs ...string) error {
 	wlock.Lock()
 	defer wlock.Unlock()
diff --git a/zsub/zgroup.go b/zsub/zgroup.go
index 037e9d3..41deee3 100644
--- a/zsub/zgroup.go
+++ b/zsub/zgroup.go
@@ -2,32 +2,27 @@ package zsub
 
 import "sync"
 
-type ZGroup struct { //ZGroup
+type ZGroup struct { // ZGroup
 	sync.Mutex
 	conns  []*ZConn
 	offset int
 	chMsg  chan string // 组消息即时投递
+	ztopic *ZTopic     // 所属topic
 }
 
-func createZGroup(c *ZConn) *ZGroup {
-	zgroup := &ZGroup{
-		conns: []*ZConn{},
-		chMsg: make(chan string, 100),
-	}
-
-	// 开启消息推送
+func (g *ZGroup) init() {
 	go func() {
 		for {
-			msg, ok := <-zgroup.chMsg
+			msg, ok := <-g.chMsg
 			if !ok {
 				break
 			}
 
-			for _, c := range zgroup.conns {
-				(*c.conn).Write([]byte(msg))
-				zgroup.offset++
+			if len(g.conns) == 0 {
+				continue
 			}
+			send(g.conns[0].conn, "message", g.ztopic.topic, msg)
+			g.offset++
 		}
 	}()
-	return zgroup
 }
diff --git a/zsub/zsub.go b/zsub/zsub.go
index cdac409..9171858 100644
--- a/zsub/zsub.go
+++ b/zsub/zsub.go
@@ -6,11 +6,15 @@ import (
 	"log"
 	"net"
 	"strconv"
+	"strings"
 	"sync"
 )
 
 var (
-	zsub ZSub
+	zsub ZSub = ZSub{
+		topics: make(map[string]*ZTopic),
+		timers: make(map[string]*ZTimer),
+	}
 )
 
 type ZSub struct {
@@ -32,16 +36,26 @@ type ZConn struct { //ZConn
 2、加入到对应组别；如果是第一次的消费组 offset从当前 mcount 开始
 3、若有待消费消息启动消费
 */
-func (s ZSub) subscribe(c *ZConn, topic string) { // 新增订阅 zconn{}
+func (s *ZSub) subscribe(c *ZConn, topic string) { // 新增订阅 zconn{}
 	ztopic := s.topics[topic] //ZTopic
 	if ztopic == nil {
-		ztopic = &ZTopic{groups: map[string]*ZGroup{}}
+		ztopic = &ZTopic{
+			groups: map[string]*ZGroup{},
+			topic:  topic,
+			chMsg:  make(chan string, 100),
+		}
+		ztopic.init()
 		s.topics[topic] = ztopic
 	}
 
 	zgroup := ztopic.groups[c.groupid] //ZGroup
 	if zgroup == nil {
-		zgroup = &ZGroup{conns: []*ZConn{}}
+		zgroup = &ZGroup{
+			conns:  []*ZConn{},
+			ztopic: ztopic,
+			chMsg:  make(chan string, 1000),
+		}
+		zgroup.init()
 		ztopic.groups[c.groupid] = zgroup
 	}
 
@@ -54,12 +68,23 @@ func (s ZSub) subscribe(c *ZConn, topic string) { // 新增订阅 zconn{}
 	}
 	_conns = append(_conns, c)
 	zgroup.conns = _conns
+
+	// 这是 ZConn
+	_topics := c.topics
+	for _, _topic := range c.topics {
+		if strings.EqualFold(_topic, topic) {
+			continue
+		}
+		_topics = append(_topics, _topic)
+	}
+	_topics = append(_topics, topic)
+	c.topics = _topics
 }
 
 /*
 取消订阅：
 */
-func (s ZSub) unsubscribe(c *ZConn, topic string) { // 取消订阅 zconn{}
+func (s *ZSub) unsubscribe(c *ZConn, topic string) { // 取消订阅 zconn{}
 	ztopic := s.topics[topic] //ZTopic
 	if ztopic == nil {
 		return
@@ -86,20 +111,18 @@ func (s ZSub) unsubscribe(c *ZConn, topic string) { // 取消订阅 zconn{}
 2、回复消息写入成功
 3、推送主题消息
 */
-func (s ZSub) publish(topic string, message string) {
+func (s *ZSub) publish(topic string, msg string) {
 	s.Lock()
 	defer s.Unlock()
 	ztopic := s.topics[topic] //ZTopic
 	if ztopic == nil {
 		return
 	}
-
-	for _, zgroup := range ztopic.groups {
-		zgroup.chMsg <- message // 不同主题消费独立进行
-	}
+	ztopic.chMsg <- msg
+	ztopic.mcount++
 }
 
-func (s ZSub) close(c *ZConn) {
+func (s *ZSub) close(c *ZConn) {
 	// 订阅
 	for _, topic := range c.topics {
 		s.unsubscribe(c, topic)
@@ -114,6 +137,7 @@ func (s ZSub) close(c *ZConn) {
 			timer.close(c)
 		}
 	}
+	(*c.conn).Close()
 }
 
 // ==================  ZHub 服务 =====================================
@@ -146,14 +170,18 @@ func ServerStart(host string, port int) {
 		}
 		fmt.Println("conn start: ", conn.RemoteAddr())
 
-		go zsub.acceptHandler(&ZConn{conn: &conn})
+		go zsub.acceptHandler(&ZConn{
+			conn:   &conn,
+			topics: []string{},
+			timers: []string{},
+		})
 	}
 }
 
 // 连接处理
-func (s ZSub) acceptHandler(c *ZConn) {
+func (s *ZSub) acceptHandler(c *ZConn) {
 	defer func() {
-		s.close(c) // 关闭连接
+		s.close(c) // close ZConn
 	}()
 
 	reader := bufio.NewReader(*c.conn)
diff --git a/zsub/ztimer.go b/zsub/ztimer.go
index 557d836..dea629e 100644
--- a/zsub/ztimer.go
+++ b/zsub/ztimer.go
@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"github.com/robfig/cron"
 	"strings"
-	"time"
 )
 
 type ZTimer struct {
@@ -14,7 +13,7 @@ type ZTimer struct {
 	cron  *cron.Cron
 }
 
-func (s ZSub) timer(rcmd []string, c *ZConn) {
+func (s *ZSub) timer(rcmd []string, c *ZConn) {
 	timer := s.timers[rcmd[1]]
 	if timer == nil {
 		timer = &ZTimer{
@@ -29,7 +28,7 @@ func (s ZSub) timer(rcmd []string, c *ZConn) {
 		if conn == c {
 			continue
 		}
-		_conns = append(_conns, c)
+		_conns = append(_conns, conn)
 	}
 	_conns = append(_conns, c)
 	timer.conns = _conns
@@ -42,7 +41,7 @@ func (s ZSub) timer(rcmd []string, c *ZConn) {
 		timer.cron = func() *cron.Cron {
 			c := cron.New()
 			c.AddFunc(timer.expr, func() {
-				fmt.Println(time.Now().Second())
+				//fmt.Println(time.Now().Second())
 				for _, conn := range timer.conns {
 					send(conn.conn, "timer", timer.topic)
 				}
@@ -56,7 +55,11 @@ func (s ZSub) timer(rcmd []string, c *ZConn) {
 	fmt.Println("xx")
 }
 
-func (t ZTimer) close(c *ZConn) {
-	// todo timer zconn
-
+func (t *ZTimer) close(c *ZConn) {
+	for i, conn := range t.conns {
+		if conn.conn == c.conn {
+			t.conns = append(t.conns[:i], t.conns[i+1:]...)
+		}
+	}
+	t.conns = append(t.conns, c)
 }
diff --git a/zsub/ztopic.go b/zsub/ztopic.go
index 3043974..9add967 100644
--- a/zsub/ztopic.go
+++ b/zsub/ztopic.go
@@ -6,9 +6,24 @@ type ZTopic struct { //ZTopic
 	sync.Mutex
 	groups map[string]*ZGroup
 	mcount int
+	topic  string      // 主题名称
 	chMsg  chan string // 主题消息投递
 }
 
 // 主题消息发送
+func (t *ZTopic) init() {
+	go func() {
+		for {
+			msg, ok := <-t.chMsg
+			if !ok {
+				break
+			}
+
+			for _, group := range t.groups {
+				group.chMsg <- msg
+			}
+		}
+	}()
+}
 
 //