My webapp doesn't resume at the Safari in our iPad air after network disconnection.

I have same questions.Our webapplications were running at the Safari in iPad Air for about 24 hours, but when the network(WiFi or the Internet) reconnecting after disconnect, the Safari doesn't come to be reconnected to Our WebApplication Server.

So we'd like to ask the following questions.
・How to prevent the Safari from suspending.
・How to check the network(WiFi or the internet) connection status by WebApplication.
・How to recover Safari from suspend.
・Under what conditions would the Safari suspend?
・How to make Safari able to be communicated after the recovery of network connection was be detected.

Truly yours, Yasushi Watanabe