Merge "DO not throw exception for ERROR_NO_SUCH_SLOT error" into udc-dev
diff --git a/framework/src/android/net/SocketKeepalive.java b/framework/src/android/net/SocketKeepalive.java
index 10daf17..f915e72 100644
--- a/framework/src/android/net/SocketKeepalive.java
+++ b/framework/src/android/net/SocketKeepalive.java
@@ -149,9 +149,7 @@
public static final int ERROR_INSUFFICIENT_RESOURCES = -32;
/**
- * There was no such slot. This should only be internally as it indicates
- * a programming error in the system server. It should not propagate to
- * applications.
+ * There was no such slot, or no keepalive running on this slot.
* @hide
*/
@SystemApi
diff --git a/service/src/com/android/server/connectivity/KeepaliveTracker.java b/service/src/com/android/server/connectivity/KeepaliveTracker.java
index 8c170bc..cc226ce 100644
--- a/service/src/com/android/server/connectivity/KeepaliveTracker.java
+++ b/service/src/com/android/server/connectivity/KeepaliveTracker.java
@@ -569,7 +569,20 @@
} else if (reason == ERROR_STOP_REASON_UNINITIALIZED) {
throw new IllegalStateException("Unexpected stop reason: " + reason);
} else if (reason == ERROR_NO_SUCH_SLOT) {
- throw new IllegalStateException("No such slot: " + reason);
+ // There are multiple independent reasons a keepalive can stop. Some
+ // are software (e.g. the app stops the keepalive) and some are hardware
+ // (e.g. the SIM card gets removed). Therefore, there is a very low
+ // probability that both of these happen at the same time, which would
+ // result in the first stop attempt returning SUCCESS and the second
+ // stop attempt returning NO_SUCH_SLOT. Such a race condition can be
+ // ignored with a log.
+ // This should still be reported because if it happens with any frequency
+ // it probably means there is a bug where the system server is trying
+ // to use a non-existing hardware slot.
+ // TODO : separate the non-existing hardware slot from the case where
+ // there is no keepalive running on this slot.
+ Log.wtf(TAG, "Keepalive on slot " + slot + " can't be stopped : " + reason);
+ notifyErrorCallback(ki.mCallback, reason);
} else {
notifyErrorCallback(ki.mCallback, reason);
}