Re: [android-developers] How to keep WiFi on and let screen go to sleep?

On Wed, Apr 10, 2013 at 4:06 PM, plnelson <pnartg@gmail.com> wrote:
> But it does. As I said, it sends a "FIN" packet - that's a request to
> close the connection. The server responds with an ACK and.a FIN of its own
> which Android ACKs. This is the textbook-standard way to close a TCP
> connection, and it's initiated by Android when the display goes off. We
> watch it all on our network sniffers and it's 100% reliable and repeatable.

I'm no low-level WiFi expert, but if WiFi were powered down, I would
expect precisely zero of these packets. Are you sure nothing in your
app is closing the socket? Say, courtesy of an onPause() or onStop()
call when the screen turns off?

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