We will prefer wifi networks over 3g networks if the user has enabled wifi and is within range of a known network. You can check if we are connected to wifi via
NetworkInfo activeInfo = ConnectivityManager.getActiveNetworkInfo(); Boolean wifi = (activeInfo != null && activeInfo.getType() == ConnectiivtyManager.TYPE_WIFI); There is no nice way to force a udp transmission onto wifi. On Mon, Oct 21, 2013 at 8:04 AM, RLScott <[email protected]> wrote: > My app uses a UDP network protocol involving very little data. But the > round-trip latency is important. I have heard that 3G latency is more > variable than wi-fi, especially after a long period of inactivity. My app > will use the network data after several hours of inactivity, and I want > that very first access to have the shortest possible latency. (It is > querying a network time server). I thought about sending out some nonsense > UDP packets to some other host just to "wake up the channel", since I am > told that the 3G network switches to faster response only after a few > hits. But then I thought it might be simpler just to insist that wi-fi be > available to provide this particular function. So is there anything in the > API that allows me to either query if wi-fi is available, or to force the > network access to use only wi-fi? > > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Android Developers" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
