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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;
    21
    22  import java.net.InetSocketAddress;
    23  import java.net.SocketAddress;
    24  import java.nio.channels.DatagramChannel;
    25
    26  import org.apache.mina.core.buffer.IoBuffer;
    27  import org.apache.mina.core.service.DefaultTransportMetadata;
    28  import org.apache.mina.core.service.IoProcessor;
    29  import org.apache.mina.core.service.IoService;
    30  import org.apache.mina.core.service.TransportMetadata;
    31  import org.apache.mina.core.session.IoSession;
    32  import org.apache.mina.transport.socket.DatagramSessionConfig;
    33
    34  /**
    35   * An {@link IoSession} for datagram transport (UDP/IP).
    36   *
    37   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
    38   */
    39  class NioDatagramSession extends NioSession {
    40      static final TransportMetadata METADATA = new DefaultTransportMetadata("nio", "datagram", true, false,
    41              InetSocketAddress.class, DatagramSessionConfig.class, IoBuffer.class);
    42
    43      private final InetSocketAddress localAddress;
    44
    45      private final InetSocketAddress remoteAddress;
    46
    47      /**
    48       * Creates a new acceptor-side session instance.
    49       */
    50      NioDatagramSession(IoService service, DatagramChannel channel, IoProcessor<NioSession> processor,
    51              SocketAddress remoteAddress) {
    52          super(processor, service, channel);
    53          config = new NioDatagramSessionConfig(channel);
    54          config.setAll(service.getSessionConfig());
    55          this.remoteAddress = (InetSocketAddress) remoteAddress;
    56          this.localAddress = (InetSocketAddress) channel.socket().getLocalSocketAddress();
    57      }
    58
    59      /**
    60       * Creates a new connector-side session instance.
    61       */
    62      NioDatagramSession(IoService service, DatagramChannel channel, IoProcessor<NioSession> processor) {
    63          this(service, channel, processor, channel.socket().getRemoteSocketAddress());
    64      }
    65
    66      /**
    67       * {@inheritDoc}
    68       */
    69      public DatagramSessionConfig getConfig() {
    70          return (DatagramSessionConfig) config;
    71      }
    72
    73      @Override
    74      DatagramChannel getChannel() {
    75          return (DatagramChannel) channel;
    76      }
    77
    78      public TransportMetadata getTransportMetadata() {
    79          return METADATA;
    80      }
    81
    82      public InetSocketAddress getRemoteAddress() {
    83          return remoteAddress;
    84      }
    85
    86      public InetSocketAddress getLocalAddress() {
    87          return localAddress;
    88      }
    89
    90      @Override
    91      public InetSocketAddress getServiceAddress() {
    92          return (InetSocketAddress) super.getServiceAddress();
    93      }
    94  }