Tether stops after a period of idle time.

[GoogleCodeExporter]

Which device (manufacturer, type)?
Sprint Samsung Galaxy S3

Which firmware is installed?
Android V 4.1.2

What version of wireless tether are you using?
3.4-experimental1-07202013

What steps will reproduce the problem?
1. Start Tether/Connect other device (iPad in my case)
2. Tether works well.
3. Go Idle for some period of time, and Tether stops.

What is the expected output? What do you see instead?
It is turning off automatically. I am hoping that tether will stay running 
until I turn it off manually.

Please provide any additional information below.
I have Keep-Alive set to the default of 5 minutes. I've removed ShopSavvy. I 
checked the 
http://www.androidpolice.com/2010/10/05/android-wifi-tether-app-for-rooted-users
-constantly-disconnecting-try-these-solutions-to-fix-it/ and they do not apply.

Original issue reported on code.google.com by Gladiato...@gmail.com on 18 Nov 2013 at 7:16

[GoogleCodeExporter]

I tried to reduce the default period of time to 1 minute, and it still stops. 
Not sure why. It may be that the iPad goes to sleep and that is when the Tether 
program stops.

I also turned off wifi completely before starting Tether. When Tether stops, 
the WiFi is back on. Not sure what is turning WiFi back on.

Original comment by Gladiato...@gmail.com on 18 Nov 2013 at 9:53