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diff --git a/js/demo/ChatDemo/ChatSession.ice b/js/demo/ChatDemo/ChatSession.ice
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+// **********************************************************************
+//
+// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
+//
+// This copy of Chat Demo is licensed to you under the terms described
+// in the CHAT_DEMO_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#ifndef CHAT_SESSION_ICE
+#define CHAT_SESSION_ICE
+
+#include <Ice/BuiltinSequences.ice>
+#include <Glacier2/Session.ice>
+#include <Chat.ice>
+
+module Chat
+{
+
+/**
+ *
+ * The ChatRoomCallback interface is the interface that clients implement
+ * as their callback object.
+ *
+ * The server calls operations of this interface to communicate
+ * with connected clients.
+ *
+ **/
+interface ChatRoomCallback
+{
+    /**
+     *
+     * The server invokes this operation when the client sets the callback
+     * for a session. This provides the client with the initial list of users
+     * currently in the chat room.
+     *
+     * @param users The names of users currently in the chat room.
+     *
+     **/
+    void init(Ice::StringSeq users);
+
+    /**
+     *
+     * The server invokes this operation to deliver a message
+     * that was sent to the chat room.
+     *
+     * @param name The name of the user that send the message.
+     *
+     * @param message The contents of the message.
+     *
+     * @param timestamp The time at which the message was sent.
+     *
+     **/
+    void send(long timestamp, string name, string message);
+
+    /**
+     *
+     * The server invokes this operation when a user joins
+     * the chat room.
+     *
+     * @param name The name of the user that joined the chat room.
+     *
+     * @param timestamp The time at which the user joined the chat room.
+     *
+     **/
+    void join(long timestamp, string name);
+
+    /**
+     *
+     * The servers invokes this operation when a user leaves
+     * the chat room.
+     *
+     * @param name The name of the user that left the chat room.
+     *
+     * @param timestamp The time at which the user left the chat room.
+     *
+     **/
+    void leave(long timestamp, string name);
+};
+
+/**
+ *
+ * A ChatSession is a custom Glacier2::Session for clients that use
+ * Glacier2 and support callbacks (C++, Java, and .NET clients).
+ *
+ * @see Glacier2::Session
+ *
+ **/
+interface ChatSession extends Glacier2::Session
+{
+    /**
+     *
+     * The setCallback operation is called by clients to set the
+     * callback used to receive notification of activity in the
+     * room. Clients receive notifications as soon as they call this
+     * operation (before setCallback returns).
+     *
+     * The first callback made by the server is a call to
+     * ChatRoomCallback::init, which delivers the current list of
+     * users to the client.
+     *
+     * @param cb The callback the server uses to deliver notifications.
+     *
+     * @see ChatRoomCallback
+     *
+     **/
+    void setCallback(ChatRoomCallback* cb);
+
+    /**
+     *
+     * Send a message to the chat room.
+     *
+     * @param message The message to be sent.
+     *
+     * @return The time at which the message is sent.
+     *
+     * @throws InvalidMessageException should the message be invalid.
+     *
+     **/
+    long send(string message) throws InvalidMessageException;
+};
+
+};
+
+#endif