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1   /*
2    * Copyright 2012 The Netty Project
3    *
4    * The Netty Project licenses this file to you under the Apache License,
5    * version 2.0 (the "License"); you may not use this file except in compliance
6    * with the License. You may obtain a copy of the License at:
7    *
8    *   http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13   * License for the specific language governing permissions and limitations
14   * under the License.
15   */
16  package org.jboss.netty.example.securechat;
17  
18  import org.jboss.netty.channel.ChannelEvent;
19  import org.jboss.netty.channel.ChannelHandlerContext;
20  import org.jboss.netty.channel.ChannelStateEvent;
21  import org.jboss.netty.channel.ExceptionEvent;
22  import org.jboss.netty.channel.MessageEvent;
23  import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
24  
25  /**
26   * Handles a client-side channel.
27   */
28  public class SecureChatClientHandler extends SimpleChannelUpstreamHandler {
29  
30      @Override
31      public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent e) throws Exception {
32          if (e instanceof ChannelStateEvent) {
33              System.err.println(e);
34          }
35          super.handleUpstream(ctx, e);
36      }
37  
38      @Override
39      public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
40          System.err.println(e.getMessage());
41      }
42  
43      @Override
44      public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) {
45          e.getCause().printStackTrace();
46          e.getChannel().close();
47      }
48  }