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    1   /*
    2    * Copyright 2009 Red Hat, Inc.
    3    *
    4    * Red Hat licenses this file to you under the Apache License, version 2.0
    5    * (the "License"); you may not use this file except in compliance with the
    6    * 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 java.util.logging.Level;
    19  import java.util.logging.Logger;
    20
    21  import org.jboss.netty.channel.ChannelEvent;
    22  import org.jboss.netty.channel.ChannelHandlerContext;
    23  import org.jboss.netty.channel.ChannelStateEvent;
    24  import org.jboss.netty.channel.ExceptionEvent;
    25  import org.jboss.netty.channel.MessageEvent;
    26  import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
    27  import org.jboss.netty.handler.ssl.SslHandler;
    28
    29  /**
    30   * Handles a client-side channel.
    31   *
    32   * @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
    33   * @author <a href="http://gleamynode.net/">Trustin Lee</a>
    34   *
    35   * @version $Rev: 2121 $, $Date: 2010-02-02 09:38:07 +0900 (Tue, 02 Feb 2010) $
    36   */
    37  public class SecureChatClientHandler extends SimpleChannelUpstreamHandler {
    38
    39      private static final Logger logger = Logger.getLogger(
    40              SecureChatClientHandler.class.getName());
    41
    42      @Override
    43      public void handleUpstream(
    44              ChannelHandlerContext ctx, ChannelEvent e) throws Exception {
    45          if (e instanceof ChannelStateEvent) {
    46              logger.info(e.toString());
    47          }
    48          super.handleUpstream(ctx, e);
    49      }
    50
    51      @Override
    52      public void channelConnected(
    53              ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
    54          // Get the SslHandler from the pipeline
    55          // which were added in SecureChatPipelineFactory.
    56          SslHandler sslHandler = ctx.getPipeline().get(SslHandler.class);
    57
    58          // Begin handshake.
    59          sslHandler.handshake();
    60      }
    61
    62      @Override
    63      public void messageReceived(
    64              ChannelHandlerContext ctx, MessageEvent e) {
    65          System.err.println(e.getMessage());
    66      }
    67
    68      @Override
    69      public void exceptionCaught(
    70              ChannelHandlerContext ctx, ExceptionEvent e) {
    71          logger.log(
    72                  Level.WARNING,
    73                  "Unexpected exception from downstream.",
    74                  e.getCause());
    75          e.getChannel().close();
    76      }
    77  }