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   /*
    * Copyright 2012 The Netty Project
    *
    * The Netty Project licenses this file to you 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.jboss.netty.example.http.snoop;
  
  import org.jboss.netty.buffer.ChannelBuffer;
  import org.jboss.netty.channel.ChannelHandlerContext;
  import org.jboss.netty.channel.MessageEvent;
  import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
  import org.jboss.netty.handler.codec.http.HttpChunk;
  import org.jboss.netty.handler.codec.http.HttpResponse;
  import org.jboss.netty.util.CharsetUtil;
  
  public class HttpSnoopClientHandler extends SimpleChannelUpstreamHandler {
  
      private boolean readingChunks;
  
      @Override
      public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) {
          if (!readingChunks) {
              HttpResponse response = (HttpResponse) e.getMessage();
  
              System.err.println("STATUS: " + response.getStatus());
              System.err.println("VERSION: " + response.getProtocolVersion());
              System.err.println();
  
              if (!response.headers().names().isEmpty()) {
                  for (String name: response.headers().names()) {
                      for (String value: response.headers().getAll(name)) {
                          System.err.println("HEADER: " + name + " = " + value);
                      }
                  }
                  System.err.println();
              }
  
              if (response.isChunked()) {
                  readingChunks = true;
                  System.err.println("CHUNKED CONTENT {");
              } else {
                  ChannelBuffer content = response.getContent();
                  if (content.readable()) {
                      System.err.println("CONTENT {");
                      System.err.println(content.toString(CharsetUtil.UTF_8));
                      System.err.println("} END OF CONTENT");
                  }
              }
          } else {
              HttpChunk chunk = (HttpChunk) e.getMessage();
              if (chunk.isLast()) {
                  readingChunks = false;
                  System.err.println("} END OF CHUNKED CONTENT");
              } else {
                  System.err.print(chunk.getContent().toString(CharsetUtil.UTF_8));
                  System.err.flush();
              }
          }
      }
  }