diff --git a/client/client.go b/client/client.go
index d96f44af..870816b1 100644
--- a/client/client.go
+++ b/client/client.go
@@ -40,6 +40,7 @@ type QQClient struct {
 
 	decoders map[string]func(*QQClient, uint16, []byte) (interface{}, error)
 	handlers sync.Map
+	server   *net.TCPAddr
 
 	syncCookie       []byte
 	pubAccountCookie []byte
@@ -616,7 +617,10 @@ var servers = []*net.TCPAddr{
 }
 
 func (c *QQClient) connect() error {
-	conn, err := net.DialTCP("tcp", nil, servers[rand.Intn(len(servers))])
+	if c.server == nil {
+		c.server = servers[rand.Intn(len(servers))]
+	}
+	conn, err := net.DialTCP("tcp", nil, c.server)
 	if err != nil {
 		return err
 	}
diff --git a/utils/ttl.go b/utils/ttl.go
index 4248e900..9a7c6d42 100644
--- a/utils/ttl.go
+++ b/utils/ttl.go
@@ -40,7 +40,7 @@ func NewTTList(ttl int64) *TTList {
 
 func (l *TTList) Add(i interface{}) {
 	l.lock.Lock()
-	l.lock.Unlock()
+	defer l.lock.Unlock()
 	l.list = append(l.list, &item{
 		i:          i,
 		lastAccess: time.Now().Unix(),
@@ -49,7 +49,7 @@ func (l *TTList) Add(i interface{}) {
 
 func (l *TTList) Any(filter func(i interface{}) bool) bool {
 	l.lock.Lock()
-	l.lock.Unlock()
+	defer l.lock.Unlock()
 	for _, it := range l.list {
 		if filter(it.i) {
 			it.lastAccess = time.Now().Unix()