/*
    *  Licensed to the Apache Software Foundation (ASF) under one
    *  or more contributor license agreements.  See the NOTICE file
    *  distributed with this work for additional information
    *  regarding copyright ownership.  The ASF 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.apache.mina.transport.socket.nio;
  
  import java.net.InetSocketAddress;
  import java.net.SocketAddress;
  import java.nio.channels.DatagramChannel;
  
  import org.apache.mina.core.buffer.IoBuffer;
  import org.apache.mina.core.service.DefaultTransportMetadata;
  import org.apache.mina.core.service.IoProcessor;
  import org.apache.mina.core.service.IoService;
  import org.apache.mina.core.service.TransportMetadata;
  import org.apache.mina.core.session.IoSession;
  import org.apache.mina.transport.socket.DatagramSessionConfig;
  
  /**
   * An {@link IoSession} for datagram transport (UDP/IP).
   *
   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
   */
  class NioDatagramSession extends NioSession {
      static final TransportMetadata METADATA = new DefaultTransportMetadata("nio", "datagram", true, false,
              InetSocketAddress.class, DatagramSessionConfig.class, IoBuffer.class);
  
      private final InetSocketAddress localAddress;
  
      private final InetSocketAddress remoteAddress;
  
      /**
       * Creates a new acceptor-side session instance.
       */
      NioDatagramSession(IoService service, DatagramChannel channel, IoProcessor<NioSession> processor,
              SocketAddress remoteAddress) {
          super(processor, service, channel);
          config = new NioDatagramSessionConfig(channel);
          config.setAll(service.getSessionConfig());
          this.remoteAddress = (InetSocketAddress) remoteAddress;
          this.localAddress = (InetSocketAddress) channel.socket().getLocalSocketAddress();
      }
  
      /**
       * Creates a new connector-side session instance.
       */
      NioDatagramSession(IoService service, DatagramChannel channel, IoProcessor<NioSession> processor) {
          this(service, channel, processor, channel.socket().getRemoteSocketAddress());
      }
  
      /**
       * {@inheritDoc}
       */
      public DatagramSessionConfig getConfig() {
          return (DatagramSessionConfig) config;
      }
  
      @Override
      DatagramChannel getChannel() {
          return (DatagramChannel) channel;
      }
  
      public TransportMetadata getTransportMetadata() {
          return METADATA;
      }
  
      public InetSocketAddress getRemoteAddress() {
          return remoteAddress;
      }
  
      public InetSocketAddress getLocalAddress() {
          return localAddress;
      }
  
      @Override
      public InetSocketAddress getServiceAddress() {
          return (InetSocketAddress) super.getServiceAddress();
      }
  }