Android - Check internet access / InetAddress never timeouts

I got a AsyncTask that is supposed to check the network access to a host name. But the doInBackground is never timed out. Anyone have a clue?public class HostAvailabilityTask extends AsyncTask<String, Void, Boolean>{

private Main main;

public HostAvailabilityTask(Main main){
this.main = main;
}

protected Boolean doInBackground(String... params) {
Main.Log("doInBackground() isHostAvailable():"+params[0]);

try {
return InetAddress.getByName(params[0]).isReachable(30);
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return false;
}

protected void onPostExecute(Boolean... result) {
Main.Log("onPostExecute()");

if(result[0] == false){
main.setContentView(R.layout.splash);
return;
}

main.continueAfterHostCheck();
}

}

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