Exception on client reconnecting to Roswebsocket and Rosbridge

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Hello guys, I got a issue on reconnecting of Roslibjs. My client app is running on Android and communicating with roswebsocket including constant publishing and subscribing on Ubuntu 16.04 kinetic. When the client is offline and successfully reconnects to the roswebsocket, app will keep frozen state for some minutes. After that app will awake and seems to instantly receive the msgs from roswebsocket during these frozen minutes. The printing information is shown as followed. So what can i do to avoiding the frozen state when reconnecting to roswebsocket.