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    1   /*
    2    *  Licensed to the Apache Software Foundation (ASF) under one
    3    *  or more contributor license agreements.  See the NOTICE file
    4    *  distributed with this work for additional information
    5    *  regarding copyright ownership.  The ASF licenses this file
    6    *  to you under the Apache License, Version 2.0 (the
    7    *  "License"); you may not use this file except in compliance
    8    *  with the License.  You may obtain a copy of the License at
    9    *
    10   *    http://www.apache.org/licenses/LICENSE-2.0
    11   *
    12   *  Unless required by applicable law or agreed to in writing,
    13   *  software distributed under the License is distributed on an
    14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    15   *  KIND, either express or implied.  See the License for the
    16   *  specific language governing permissions and limitations
    17   *  under the License.
    18   *
    19   */
    20  package org.apache.mina.transport.socket.nio.support;
    21
    22  import java.net.DatagramSocket;
    23  import java.net.SocketException;
    24
    25  import org.apache.mina.common.ExceptionMonitor;
    26  import org.apache.mina.common.support.BaseIoSessionConfig;
    27  import org.apache.mina.transport.socket.nio.DatagramSessionConfig;
    28
    29  /**
    30   * @author The Apache Directory Project (mina-dev@directory.apache.org)
    31   * @version $Rev: 555855 $, $Date: 2007-07-13 12:19:00 +0900 (Fri, 13 Jul 2007) $
    32   */
    33  public class DatagramSessionConfigImpl extends BaseIoSessionConfig implements
    34          DatagramSessionConfig {
    35      private static boolean SET_RECEIVE_BUFFER_SIZE_AVAILABLE = false;
    36
    37      private static boolean SET_SEND_BUFFER_SIZE_AVAILABLE = false;
    38
    39      private static boolean GET_TRAFFIC_CLASS_AVAILABLE = false;
    40
    41      private static boolean SET_TRAFFIC_CLASS_AVAILABLE = false;
    42
    43      private static boolean DEFAULT_BROADCAST = false;
    44
    45      private static boolean DEFAULT_REUSE_ADDRESS = false;
    46
    47      private static int DEFAULT_RECEIVE_BUFFER_SIZE = 1024;
    48
    49      private static int DEFAULT_SEND_BUFFER_SIZE = 1024;
    50
    51      private static int DEFAULT_TRAFFIC_CLASS = 0;
    52
    53      static {
    54          initialize();
    55      }
    56
    57      private static void initialize() {
    58          DatagramSocket socket = null;
    59
    60          try {
    61              socket = new DatagramSocket();
    62              DEFAULT_BROADCAST = socket.getBroadcast();
    63              DEFAULT_REUSE_ADDRESS = socket.getReuseAddress();
    64              DEFAULT_RECEIVE_BUFFER_SIZE = socket.getReceiveBufferSize();
    65              DEFAULT_SEND_BUFFER_SIZE = socket.getSendBufferSize();
    66
    67              // Check if setReceiveBufferSize is supported.
    68              try {
    69                  socket.setReceiveBufferSize(DEFAULT_RECEIVE_BUFFER_SIZE);
    70                  SET_RECEIVE_BUFFER_SIZE_AVAILABLE = true;
    71              } catch (SocketException e) {
    72                  SET_RECEIVE_BUFFER_SIZE_AVAILABLE = false;
    73              }
    74
    75              // Check if setSendBufferSize is supported.
    76              try {
    77                  socket.setSendBufferSize(DEFAULT_SEND_BUFFER_SIZE);
    78                  SET_SEND_BUFFER_SIZE_AVAILABLE = true;
    79              } catch (SocketException e) {
    80                  SET_SEND_BUFFER_SIZE_AVAILABLE = false;
    81              }
    82
    83              // Check if getTrafficClass is supported.
    84              try {
    85                  DEFAULT_TRAFFIC_CLASS = socket.getTrafficClass();
    86                  GET_TRAFFIC_CLASS_AVAILABLE = true;
    87              } catch (SocketException e) {
    88                  GET_TRAFFIC_CLASS_AVAILABLE = false;
    89                  DEFAULT_TRAFFIC_CLASS = 0;
    90              }
    91          } catch (SocketException e) {
    92              ExceptionMonitor.getInstance().exceptionCaught(e);
    93          } finally {
    94              if (socket != null) {
    95                  socket.close();
    96              }
    97          }
    98      }
    99
    100     public static boolean isSetReceiveBufferSizeAvailable() {
    101         return SET_RECEIVE_BUFFER_SIZE_AVAILABLE;
    102     }
    103
    104     public static boolean isSetSendBufferSizeAvailable() {
    105         return SET_SEND_BUFFER_SIZE_AVAILABLE;
    106     }
    107
    108     public static boolean isGetTrafficClassAvailable() {
    109         return GET_TRAFFIC_CLASS_AVAILABLE;
    110     }
    111
    112     public static boolean isSetTrafficClassAvailable() {
    113         return SET_TRAFFIC_CLASS_AVAILABLE;
    114     }
    115
    116     private boolean broadcast = DEFAULT_BROADCAST;
    117
    118     private boolean reuseAddress = DEFAULT_REUSE_ADDRESS;
    119
    120     private int receiveBufferSize = DEFAULT_RECEIVE_BUFFER_SIZE;
    121
    122     private int sendBufferSize = DEFAULT_SEND_BUFFER_SIZE;
    123
    124     private int trafficClass = DEFAULT_TRAFFIC_CLASS;
    125
    126     /**
    127      * Creates a new instance.
    128      */
    129     public DatagramSessionConfigImpl() {
    130     }
    131
    132     /**
    133      * @see DatagramSocket#getBroadcast()
    134      */
    135     public boolean isBroadcast() {
    136         return broadcast;
    137     }
    138
    139     /**
    140      * @see DatagramSocket#setBroadcast(boolean)
    141      */
    142     public void setBroadcast(boolean broadcast) {
    143         this.broadcast = broadcast;
    144     }
    145
    146     /**
    147      * @see DatagramSocket#getReuseAddress()
    148      */
    149     public boolean isReuseAddress() {
    150         return reuseAddress;
    151     }
    152
    153     /**
    154      * @see DatagramSocket#setReuseAddress(boolean)
    155      */
    156     public void setReuseAddress(boolean reuseAddress) {
    157         this.reuseAddress = reuseAddress;
    158     }
    159
    160     /**
    161      * @see DatagramSocket#getReceiveBufferSize()
    162      */
    163     public int getReceiveBufferSize() {
    164         return receiveBufferSize;
    165     }
    166
    167     /**
    168      * @see DatagramSocket#setReceiveBufferSize(int)
    169      */
    170     public void setReceiveBufferSize(int receiveBufferSize) {
    171         this.receiveBufferSize = receiveBufferSize;
    172     }
    173
    174     /**
    175      * @see DatagramSocket#getSendBufferSize()
    176      */
    177     public int getSendBufferSize() {
    178         return sendBufferSize;
    179     }
    180
    181     /**
    182      * @see DatagramSocket#setSendBufferSize(int)
    183      */
    184     public void setSendBufferSize(int sendBufferSize) {
    185         this.sendBufferSize = sendBufferSize;
    186     }
    187
    188     /**
    189      * @see DatagramSocket#getTrafficClass()
    190      */
    191     public int getTrafficClass() {
    192         return trafficClass;
    193     }
    194
    195     /**
    196      * @see DatagramSocket#setTrafficClass(int)
    197      */
    198     public void setTrafficClass(int trafficClass) {
    199         this.trafficClass = trafficClass;
    200     }
    201 }