libwg-go: try no stickiness and no roaming

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

app/src/main/java/com/wireguard/android/backend/GoBackend.java

@@ -51,10 +51,6 @@ public final class GoBackend implements Backend {
 
     private static native int wgGetSocketV6(int handle);
 
-    private static native void wgPutSocketV4(int handle);
-
-    private static native void wgPutSocketV6(int handle);
-
     private static native void wgTurnOff(int handle);
 
     private static native int wgTurnOn(String ifName, int tunFd, String settings);
@@ -190,9 +186,7 @@ public final class GoBackend implements Backend {
             currentTunnel = tunnel;
 
             service.protect(wgGetSocketV4(currentTunnelHandle));
-            wgPutSocketV4(currentTunnelHandle);
             service.protect(wgGetSocketV6(currentTunnelHandle));
-            wgPutSocketV6(currentTunnelHandle);
         } else {
             Log.i(TAG, "Bringing tunnel down");
 

app/tools/libwg-go/src/git.zx2c4.com/wireguard-go/api-android.go

@@ -85,7 +85,6 @@ func wgTurnOn(ifnameRef string, tun_fd int32, settings string) int32 {
 	}
 
 	device.Up()
-	device.net.bind.(*NativeBind).clearSourceOnAllRouteChanges = true
 	logger.Info.Println("Device started")
 
 	var i int32
@@ -122,54 +121,42 @@ func wgGetSocketV4(tunnelHandle int32) int32 {
 	if !ok {
 		return -1
 	}
-	return int32(native.sock4)
-}
-
-//export wgGetSocketV6
-func wgGetSocketV6(tunnelHandle int32) int32 {
-	device, ok := tunnelHandles[tunnelHandle]
-	if !ok {
+	fd := int32(-1)
+	conn, err := native.ipv4.SyscallConn()
+	if err != nil {
 		return -1
 	}
-	native, ok := device.net.bind.(*NativeBind)
-	if !ok {
+	err = conn.Control(func(f uintptr) {
+		fd = int32(f)
+	})
+	if err != nil {
 		return -1
 	}
-	return int32(native.sock6)
+	return fd
 }
 
-//export wgPutSocketV4
-func wgPutSocketV4(tunnelHandle int32) {
+//export wgGetSocketV6
+func wgGetSocketV6(tunnelHandle int32) int32 {
 	device, ok := tunnelHandles[tunnelHandle]
 	if !ok {
-		return
+		return -1
 	}
 	native, ok := device.net.bind.(*NativeBind)
 	if !ok {
-		return
-	}
-	fwmark, err := unix.GetsockoptInt(native.sock6, unix.SOL_SOCKET, unix.SO_MARK)
-	if err == nil {
-		native.lastMark = uint32(fwmark)
-		device.net.fwmark = uint32(fwmark)
-	}
-}
-
-//export wgPutSocketV6
-func wgPutSocketV6(tunnelHandle int32) {
-	device, ok := tunnelHandles[tunnelHandle]
-	if !ok {
-		return
+		return -1
 	}
-	native, ok := device.net.bind.(*NativeBind)
-	if !ok {
-		return
+	fd := int32(-1)
+	conn, err := native.ipv6.SyscallConn()
+	if err != nil {
+		return -1
 	}
-	fwmark, err := unix.GetsockoptInt(native.sock6, unix.SOL_SOCKET, unix.SO_MARK)
-	if err == nil {
-		native.lastMark = uint32(fwmark)
-		device.net.fwmark = uint32(fwmark)
+	err = conn.Control(func(f uintptr) {
+		fd = int32(f)
+	})
+	if err != nil {
+		return -1
 	}
+	return fd
 }
 
 func main() {}

app/tools/libwg-go/src/git.zx2c4.com/wireguard-go/jni.c

@@ -10,8 +10,6 @@ extern int wgTurnOn(struct go_string ifname, int tun_fd, struct go_string settin
 extern void wgTurnOff(int handle);
 extern int wgGetSocketV4(int handle);
 extern int wgGetSocketV6(int handle);
-extern void wgPutSocketV4(int handle);
-extern void wgPutSocketV6(int handle);
 
 JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgTurnOn(JNIEnv *env, jclass c, jstring ifname, jint tun_fd, jstring settings)
 {
@@ -45,13 +43,3 @@ JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgGetSocketV
 {
 	return wgGetSocketV6(handle);
 }
-
-JNIEXPORT void JNICALL Java_com_wireguard_android_backend_GoBackend_wgPutSocketV4(JNIEnv *env, jclass c, jint handle)
-{
-	wgPutSocketV4(handle);
-}
-
-JNIEXPORT void JNICALL Java_com_wireguard_android_backend_GoBackend_wgPutSocketV6(JNIEnv *env, jclass c, jint handle)
-{
-	wgPutSocketV6(handle);
-}

app/tools/wireguard-go

@@ -1 +1 @@
-Subproject commit 4365b4583fa32b1b77d33f5074da9c165a28f824
+Subproject commit 1dab5b94dd4e87a278c5cbbabe7d045ebab8283a