diff --git a/cli/client.go b/cli/client.go
index e245e69..38f0302 100644
--- a/cli/client.go
+++ b/cli/client.go
@@ -119,6 +119,11 @@ func (c *Client) Subscribe(topic string, fun func(v string)) {
 	}
 }
 
+func (c *Client) Unsubscribe(topic string) {
+	c.send("unsubscribe " + topic)
+	delete(c.subFun, topic)
+}
+
 /*
 ---
 ping
diff --git a/pkg.bat b/pkg.bat
index f3d8cc3..6d4882c 100644
--- a/pkg.bat
+++ b/pkg.bat
@@ -1,7 +1,10 @@
 SET GOOS=linux
 SET GOARCH=amd64
-go build -o zhub.sh -ldflags "-s -w" ./main.go
+go build -o zhub.sh -ldflags "-s -w" ./app.go
 upx -9 zhub.sh
 
-scp zhub.sh zhost:
+scp zhub.sh  xhost:/opt/zhub
+scp zhub.sh  zhost:/opt/zhub
+scp zhub.sh  qhost:/opt/zhub
+scp zhub.sh  nhost:/opt/zhub
 del zhub.sh
diff --git a/zsub/msg-consumer.go b/zsub/msg-consumer.go
index e82384e..89d5331 100644
--- a/zsub/msg-consumer.go
+++ b/zsub/msg-consumer.go
@@ -106,7 +106,7 @@ func (s *ZSub) delay(rcmd []string, c *ZConn) {
 	if timer != nil {
 		if t == -1 {
 			timer.Stop()
-			s.delays[rcmd[1]+"-"+rcmd[2]] = nil
+			delete(s.delays, rcmd[1]+"-"+rcmd[2])
 			return
 		}
 		timer.Reset(time.Duration(t) * time.Millisecond)
@@ -117,7 +117,7 @@ func (s *ZSub) delay(rcmd []string, c *ZConn) {
 			select {
 			case <-timer.C:
 				zsub.publish(rcmd[1], rcmd[2])
-				s.delays[rcmd[1]+"-"+rcmd[2]] = nil
+				delete(s.delays, rcmd[1]+"-"+rcmd[2])
 			}
 		}()
 	}
diff --git a/zsub/zgroup.go b/zsub/zgroup.go
index 1a348f9..7e6e701 100644
--- a/zsub/zgroup.go
+++ b/zsub/zgroup.go
@@ -31,6 +31,8 @@ func (g *ZGroup) appendTo(c *ZConn) {
 				atomic.AddInt32(&g.offset, 1)
 			case <-c.stoped:
 				return
+			case <-c.substoped[g.ztopic.topic]:
+				return
 			}
 		}
 	}()
diff --git a/zsub/zsub.go b/zsub/zsub.go
index c34833c..eb2e362 100644
--- a/zsub/zsub.go
+++ b/zsub/zsub.go
@@ -27,19 +27,21 @@ type ZSub struct {
 
 type ZConn struct { //ZConn
 	sync.Mutex
-	conn    *net.Conn
-	groupid string
-	topics  []string
-	timers  []string // 订阅、定时调度分别创建各自连接
-	stoped  chan int // 关闭信号量
+	conn      *net.Conn
+	groupid   string
+	topics    []string
+	timers    []string            // 订阅、定时调度分别创建各自连接
+	stoped    chan int            // 关闭信号量
+	substoped map[string]chan int // 关闭信号量
 }
 
 func NewZConn(conn *net.Conn) *ZConn {
 	return &ZConn{
-		conn:   conn,
-		topics: []string{},
-		timers: []string{},
-		stoped: make(chan int, 0),
+		conn:      conn,
+		topics:    []string{},
+		timers:    []string{},
+		stoped:    make(chan int, 0),
+		substoped: make(map[string]chan int),
 	}
 }
 
@@ -74,6 +76,7 @@ func (s *ZSub) subscribe(c *ZConn, topic string) { // 新增订阅 zconn{}
 	}
 
 	//zgroup.conns = c.appendTo(zgroup.conns)
+	c.substoped[topic] = make(chan int, 0)
 	zgroup.appendTo(c)
 
 	for i, item := range c.topics {
@@ -90,6 +93,7 @@ func (s *ZSub) subscribe(c *ZConn, topic string) { // 新增订阅 zconn{}
 func (s *ZSub) unsubscribe(c *ZConn, topic string) { // 取消订阅 zconn{}
 	s.Lock()
 	defer s.Unlock()
+	close(c.substoped[topic])
 	ztopic := s.topics[topic] //ZTopic
 	if ztopic == nil {
 		return
@@ -226,6 +230,11 @@ func ServerStart(addr string) {
 
 // 连接处理
 func (s *ZSub) acceptHandler(c *ZConn) {
+	defer func() {
+		if r := recover(); r != nil {
+			log.Println("acceptHandler Recovered:", r)
+		}
+	}()
 	defer func() {
 		s.close(c) // close ZConn
 	}()