1 files changed, 67 insertions, 0 deletions
diff --git a/src/java/com/android/ike/ikev2/ChildSessionCallback.java b/src/java/com/android/ike/ikev2/ChildSessionCallback.java
new file mode 100644
index 00000000..071ad432
--- /dev/null
+++ b/src/java/com/android/ike/ikev2/ChildSessionCallback.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.ike.ikev2;
+
+import android.net.IpSecManager.PolicyDirection;
+import android.net.IpSecTransform;
+
+import com.android.ike.ikev2.exceptions.IkeException;
+
+/** Callback interface for receiving state changes of a Child Session. */
+public interface ChildSessionCallback {
+    /**
+     * Called when Child Session setup succeeds.
+     *
+     * @param sessionConfiguration the configuration information of Child Session negotiated during
+     *     Child creation.
+     */
+    void onOpened(ChildSessionConfiguration sessionConfiguration);
+
+    /**
+     * Called when either side has decided to close this Session and the deletion exchange
+     * finishes.
+     *
+     * <p>This method will not be fired if this deletion is caused by a fatal error.
+     */
+    void onClosed();
+
+    /**
+     * Called if Child Session setup fails or Child Session is closed because of a fatal error.
+     *
+     * @param exception the detailed error.
+     */
+    void onClosedExceptionally(IkeException exception);
+
+    /**
+     * Called when a new {@link IpSecTransform} is created for this Child Session.
+     *
+     * @param ipSecTransform the created {@link IpSecTransform}
+     * @param direction the direction of this {@link IpSecTransform}
+     */
+    void onIpSecTransformCreated(IpSecTransform ipSecTransform, @PolicyDirection int direction);
+
+    /**
+     * Called when a new {@link IpSecTransform} is deleted for this Child Session.
+     *
+     * <p>Users MUST remove the transform from the socket or interface. Otherwise the communication
+     * on that socket or interface will fail.
+     *
+     * @param ipSecTransform the deleted {@link IpSecTransform}
+     * @param direction the direction of this {@link IpSecTransform}
+     */
+    void onIpSecTransformDeleted(IpSecTransform ipSecTransform, @PolicyDirection int direction);
+}