improve kcp shutdown

client/control.go

@@ -145,6 +145,7 @@ func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
 }
 
 func (ctl *Control) Close() error {
+	ctl.pm.Close()
 	ctl.conn.Close()
 	return nil
 }

client/proxy/proxy_manager.go

@@ -50,11 +50,12 @@ func (pm *ProxyManager) StartProxy(name string, remoteAddr string, serverRespErr
 }
 
 func (pm *ProxyManager) Close() {
-	pm.mu.RLock()
-	defer pm.mu.RUnlock()
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
 	for _, pxy := range pm.proxies {
 		pxy.Stop()
 	}
+	pm.proxies = make(map[string]*ProxyWrapper)
 }
 
 func (pm *ProxyManager) HandleWorkConn(name string, workConn frpNet.Conn) {

client/service.go

@@ -157,6 +157,7 @@ func (svr *Service) login() (conn frpNet.Conn, session *fmux.Session, err error)
 
 	if g.GlbClientCfg.TcpMux {
 		fmuxCfg := fmux.DefaultConfig()
+		fmuxCfg.KeepAliveInterval = 20 * time.Second
 		fmuxCfg.LogOutput = ioutil.Discard
 		session, err = fmux.Client(conn, fmuxCfg)
 		if err != nil {