/*
    *  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 static org.junit.Assert.assertEquals;
  
  import java.net.InetSocketAddress;
  import java.net.PortUnreachableException;
  
  import org.apache.mina.core.buffer.IoBuffer;
  import org.apache.mina.core.future.ConnectFuture;
  import org.apache.mina.core.service.IoConnector;
  import org.apache.mina.core.service.IoHandlerAdapter;
  import org.apache.mina.core.session.IoSession;
  import org.apache.mina.transport.socket.DatagramSessionConfig;
  import org.apache.mina.util.AvailablePortFinder;
  import org.junit.Test;
  
  /**
   * Tests {@link DatagramSessionConfig#setCloseOnPortUnreachable(boolean)}.
   *
   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
   */
  public class DatagramPortUnreachableTest {
  
      Object mutex = new Object();
  
      private void runTest(boolean closeOnPortUnreachable) throws Exception {
          IoConnector connector = new NioDatagramConnector();
          connector.setHandler(new IoHandlerAdapter() {
  
              @Override
              public void exceptionCaught(IoSession session, Throwable cause) throws Exception {
                  if (cause instanceof PortUnreachableException) {
                      synchronized (mutex) {
                          mutex.notify();
                      }
                  }
              }
  
          });
          ConnectFuture future = connector.connect(new InetSocketAddress("localhost", AvailablePortFinder
                  .getNextAvailable(20000)));
          future.awaitUninterruptibly();
          IoSession session = future.getSession();
  
          DatagramSessionConfig cfg = ((DatagramSessionConfig) session.getConfig());
          cfg.setUseReadOperation(true);
          cfg.setCloseOnPortUnreachable(closeOnPortUnreachable);
  
          synchronized (mutex) {
              session.write(IoBuffer.allocate(1)).awaitUninterruptibly().isWritten();
              session.read();
              mutex.wait();
          }
  
          Thread.sleep(500);
  
          assertEquals(closeOnPortUnreachable, session.isClosing());
          connector.dispose();
      }
  
      @Test
      public void testPortUnreachableClosesSession() throws Exception {
          // session should be closing
          runTest(true);
      }
  
      @Test
      public void testNormal() throws Exception {
          // test that session is not closed on port unreachable exception
          runTest(false);
      }
  }