Hello,
I am experimenting with the VpnService that was added to Android in
SDK 4.0. I have gotten as far as starting the VpnService, however, I
am unable to create the virtual interface. My code throws an
IllegalStateException and I am not able to figure out why.
My cut down example looks like this:
ParcelFileDescriptor pfd = null;
VpnService.Builder b = new VpnService.Builder();
try{
b.addAddress("10.0.6.2", 24);
b.setMtu(1460);
b.setSession("TunnelTest");
} catch(IllegalArgumentException e){
Log.v("Service", "Address is invalid!");
stopSelf();
return;
}
try{
pfd = b.establish();
} catch (IllegalArgumentException e){
Log.v("Service", "Interface was provided with
an illegal
argument");
} catch (IllegalStateException e){
e.printStackTrace();
Log.v("Service", "Illegal state");
} catch (SecurityException e){
Log.v("Service", "Security exception thrown");
What I try to do here is to create a virtual interface with IP
10.0.6.2, belonging to the 10.6.0.0/24 subnet. The exception is thrown
by the b.establish() call.
This is the full stack trace:
11-30 17:51:10.863: W/System.err(2741):
java.lang.IllegalStateException: Cannot create interface
11-30 17:51:10.875: W/System.err(2741): at
android.os.Parcel.readException(Parcel.java:1335)
11-30 17:51:10.875: W/System.err(2741): at
android.os.Parcel.readException(Parcel.java:1281)
11-30 17:51:10.875: W/System.err(2741): at
android.net.IConnectivityManager$Stub
$Proxy.establishVpn(IConnectivityManager.java:1321)
11-30 17:51:10.875: W/System.err(2741): at
android.net.VpnService
$Builder.establish(VpnService.java:472)
11-30 17:51:10.875: W/System.err(2741): at
no.simtel.TestVpnService
$TestVpn.run(TestVpnService.java:37)
Thanks in advance for any help.
/Kristian
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