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 <fixthatpi...@yahoo.com> 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 android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > 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 android-developers+unsubscr...@googlegroups.com. > 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 android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com 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 android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
