Prefer wifi network when connecting over udp

This works for android 6 and above
voroshkov · Aug 22, 2019 · 1b89bf4 · 1b89bf4
1 parent 09c948a
commit 1b89bf4
Showing 1 changed file with 19 additions and 1 deletion.
diff --git a/...ChorusRFLaptimer/app/src/main/java/app/andrey_voroshkov/chorus_laptimer/MainActivity.java b/...ChorusRFLaptimer/app/src/main/java/app/andrey_voroshkov/chorus_laptimer/MainActivity.java
@@ -10,12 +10,16 @@
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.hardware.usb.UsbDevice;
 import android.hardware.usb.UsbManager;
+import android.net.ConnectivityManager;
 import android.net.DhcpInfo;
+import android.net.Network;
+import android.net.NetworkInfo;
 import android.net.wifi.WifiInfo;
 import android.net.wifi.WifiManager;
-import android.content.pm.PackageManager;
+import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Message;
@@ -243,8 +247,22 @@ public void handleMessage(Message msg) {
                 startActivityForResult(intent, BluetoothState.REQUEST_CONNECT_DEVICE);
                 break;
             case R.id.menuUDPConnect:
+                ConnectivityManager cm = (ConnectivityManager) getSystemService( Context.CONNECTIVITY_SERVICE );
+                if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ) {
+                    for ( Network net : cm.getAllNetworks() ) {
+                        NetworkInfo networkInfo = cm.getNetworkInfo( net );
+                        if ( networkInfo.getType() == ConnectivityManager.TYPE_WIFI ) {
+                            cm.bindProcessToNetwork( net );
+                            break;
+                        }
+                    }
+                }
+
                 udp.connect(getGatewayIP(), 0);
                 useUDP();
+                if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.M ) {
+                    cm.bindProcessToNetwork( null );
+                }
                 break;
             case R.id.menuUSBConnect:
                 checkUSBPermissionsAndConnectIfAllowed();