1 files changed, 45 insertions, 0 deletions
diff --git a/src/org/jivesoftware/smackx/ping/packet/Pong.java b/src/org/jivesoftware/smackx/ping/packet/Pong.java
new file mode 100644
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+++ b/src/org/jivesoftware/smackx/ping/packet/Pong.java
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+/**
+ * Copyright 2012 Florian Schmaus
+ *
+ * All rights reserved. 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 org.jivesoftware.smackx.ping.packet;
+
+import org.jivesoftware.smack.packet.IQ;
+
+public class Pong extends IQ {
+    
+    /**
+     * Composes a Pong packet from a received ping packet. This basically swaps
+     * the 'from' and 'to' attributes. And sets the IQ type to result.
+     * 
+     * @param ping
+     */
+    public Pong(Ping ping) {
+        setType(IQ.Type.RESULT);
+        setFrom(ping.getTo());
+        setTo(ping.getFrom());
+        setPacketID(ping.getPacketID());
+    }
+    
+    /*
+     * Returns the child element of the Pong reply, which is non-existent. This
+     * is why we return 'null' here. See e.g. Example 11 from
+     * http://xmpp.org/extensions/xep-0199.html#e2e
+     */
+    public String getChildElementXML() {
+        return null;
+    }
+
+}