Make VPN connect even when DNS is not present and other fixes.

* Changes:
  + As title.
  + Add two new states to VpnState: UNKNOWN and UNUSABLE.
  + Add more debug messages when stopping a service and when DNS being
    overridden.

diff --git a/vpn/java/android/net/vpn/VpnState.java b/vpn/java/android/net/vpn/VpnState.java
index ebd9364..6e61f9c 100644 (file)
--- a/vpn/java/android/net/vpn/VpnState.java
+++ b/vpn/java/android/net/vpn/VpnState.java
@@ -26,8 +26,13 @@ package android.net.vpn;
  * {@link DISCONNECTING} and then {@link IDLE}.
  * {@link CANCELLED} is a state when a VPN connection attempt is aborted, and
  * is in transition to {@link IDLE}.
+ * The {@link UNUSABLE} state indicates that the profile is not in a state for
+ * connecting due to possibly the integrity of the fields or another profile is
+ * connecting etc.
+ * The {@link UNKNOWN} state indicates that the profile state is to be
+ * determined.
  * {@hide}
  */
 public enum VpnState {
-    CONNECTING, DISCONNECTING, CANCELLED, CONNECTED, IDLE
+    CONNECTING, DISCONNECTING, CANCELLED, CONNECTED, IDLE, UNUSABLE, UNKNOWN
 }