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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.channel.socket;
  
  import java.net.ServerSocket;
  import java.net.SocketException;
  
  import org.jboss.netty.channel.ChannelException;
  import org.jboss.netty.channel.DefaultServerChannelConfig;
  import org.jboss.netty.util.internal.ConversionUtil;
  
  /**
   * The default {@link ServerSocketChannelConfig} implementation.
   */
  public class DefaultServerSocketChannelConfig extends DefaultServerChannelConfig
                                                implements ServerSocketChannelConfig {
  
      private final ServerSocket socket;
      private volatile int backlog;
  
      /**
       * Creates a new instance.
       */
      public DefaultServerSocketChannelConfig(ServerSocket socket) {
          if (socket == null) {
              throw new NullPointerException("socket");
          }
          this.socket = socket;
      }
  
      @Override
      public boolean setOption(String key, Object value) {
          if (super.setOption(key, value)) {
              return true;
          }
  
          if ("receiveBufferSize".equals(key)) {
              setReceiveBufferSize(ConversionUtil.toInt(value));
          } else if ("reuseAddress".equals(key)) {
              setReuseAddress(ConversionUtil.toBoolean(value));
          } else if ("backlog".equals(key)) {
              setBacklog(ConversionUtil.toInt(value));
          } else {
              return false;
          }
          return true;
      }
  
      public boolean isReuseAddress() {
          try {
              return socket.getReuseAddress();
          } catch (SocketException e) {
              throw new ChannelException(e);
          }
      }
  
      public void setReuseAddress(boolean reuseAddress) {
          try {
              socket.setReuseAddress(reuseAddress);
          } catch (SocketException e) {
              throw new ChannelException(e);
          }
      }
  
      public int getReceiveBufferSize() {
          try {
              return socket.getReceiveBufferSize();
          } catch (SocketException e) {
              throw new ChannelException(e);
          }
      }
  
      public void setReceiveBufferSize(int receiveBufferSize) {
          try {
              socket.setReceiveBufferSize(receiveBufferSize);
          } catch (SocketException e) {
              throw new ChannelException(e);
          }
      }
  
      public void setPerformancePreferences(int connectionTime, int latency, int bandwidth) {
          socket.setPerformancePreferences(connectionTime, latency, bandwidth);
      }
  
      public int getBacklog() {
          return backlog;
     }
 
     public void setBacklog(int backlog) {
         if (backlog < 0) {
             throw new IllegalArgumentException("backlog: " + backlog);
         }
         this.backlog = backlog;
     }
 }