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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 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  public class SecureChatClientHandler extends SimpleChannelUpstreamHandler {
    33
    34      private static final Logger logger = Logger.getLogger(
    35              SecureChatClientHandler.class.getName());
    36
    37      @Override
    38      public void handleUpstream(
    39              ChannelHandlerContext ctx, ChannelEvent e) throws Exception {
    40          if (e instanceof ChannelStateEvent) {
    41              logger.info(e.toString());
    42          }
    43          super.handleUpstream(ctx, e);
    44      }
    45
    46      @Override
    47      public void channelConnected(
    48              ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
    49          // Get the SslHandler from the pipeline
    50          // which were added in SecureChatPipelineFactory.
    51          SslHandler sslHandler = ctx.getPipeline().get(SslHandler.class);
    52
    53          // Begin handshake.
    54          sslHandler.handshake();
    55      }
    56
    57      @Override
    58      public void messageReceived(
    59              ChannelHandlerContext ctx, MessageEvent e) {
    60          System.err.println(e.getMessage());
    61      }
    62
    63      @Override
    64      public void exceptionCaught(
    65              ChannelHandlerContext ctx, ExceptionEvent e) {
    66          logger.log(
    67                  Level.WARNING,
    68                  "Unexpected exception from downstream.",
    69                  e.getCause());
    70          e.getChannel().close();
    71      }
    72  }