Android - native sockets not removing 3G-sleep-mode on first attempt

Question

I have a really annoying problem. What happens is I have an application which is using native sockets to send data over TCP. When I first launch my application and send data over the sockets, nothing gets through. However if I then quit the process and restart it and then send again, it works. Same thing if I open the browser or something before starting my app for the first time after sleep mode.

How do I 'force' 3G to go out of sleep mode before I make the call to the native code?

EDIT: I have already tried with PowerManager.

Glucoside

Have you tried this on some other device? I have some related problems with native UDP socket on my HTC Desire, but no problems on several Samsung Galaxys, Huawei's or Sony Ericsson phones. – Magallanes

I have tried this on HTC Desire and HTC EVO 3d. Both have this problem – Glucoside

Maybe just expect the first try to fail, and then retry a second or two later? Or, issue a dummy HttpGetRequest to www.example.com, say, to wake up the networking layers before trying your real network code. – Emissivity

There has to be a better way though, it feels too gimmicky – Glucoside

Answer 1

Try calling startUsingNetworkFeature (int networkType, String feature) On a ConnectivityManager and wait for it to be available before you bind your sockets ect......

Android Documentation

Fabrin

Answer 2

I'd give the ConnectivityManager API requestRouteToHost(int networkType, int hostAddress) a try.

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