“现在无法切换到旧模式” - tls.connect函数中的Node.JS apn模块错误

I am trying to implement Node.JS apn module to connect to APNS (Apple Push Notification service) to push notification to iPhone devices from the Node server (using ExpressJS) hosted on Amazon EC2 instance running Ubuntu 12.04. I am getting this error:I am trying to implement Node.JS apn module to