/*
* 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 static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertTrue;
import java.net.InetSocketAddress;
import org.apache.mina.core.buffer.IoBuffer;
import org.apache.mina.core.future.ConnectFuture;
import org.apache.mina.core.future.WriteFuture;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.ExpiringSessionRecycler;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.apache.mina.util.AvailablePortFinder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
/**
* Tests if datagram sessions are recycled properly.
*
* @author <a href="http://mina.apache.org">Apache MINA Project</a>
*/
public class DatagramRecyclerTest {
private NioDatagramAcceptor acceptor;
private NioDatagramConnector connector;
public DatagramRecyclerTest() {
// Do nothing
}
@Before
public void setUp() throws Exception {
acceptor = new NioDatagramAcceptor();
connector = new NioDatagramConnector();
}
@After
public void tearDown() throws Exception {
acceptor.dispose();
connector.dispose();
}
@Test
public void testDatagramRecycler() throws Exception {
int port = AvailablePortFinder.getNextAvailable(1024);
ExpiringSessionRecycler recycler = new ExpiringSessionRecycler(1, 1);
MockHandler acceptorHandler = new MockHandler();
MockHandler connectorHandler = new MockHandler();
acceptor.setHandler(acceptorHandler);
acceptor.setSessionRecycler(recycler);
acceptor.bind(new InetSocketAddress(port));
try {
connector.setHandler(connectorHandler);
ConnectFuture future = connector.connect(new InetSocketAddress(
"localhost", port));
future.awaitUninterruptibly();
// Write whatever to trigger the acceptor.
future.getSession().write(IoBuffer.allocate(1))
.awaitUninterruptibly();
// Close the client-side connection.
// This doesn't mean that the acceptor-side connection is also closed.
// The life cycle of the acceptor-side connection is managed by the recycler.
future.getSession().close(true);
future.getSession().getCloseFuture().awaitUninterruptibly();
assertTrue(future.getSession().getCloseFuture().isClosed());
// Wait until the acceptor-side connection is closed.
while (acceptorHandler.session == null) {
Thread.yield();
}
acceptorHandler.session.getCloseFuture().awaitUninterruptibly(3000);
// Is it closed?
assertTrue(acceptorHandler.session.getCloseFuture()
.isClosed());
Thread.sleep(1000);
assertEquals("CROPSECL", connectorHandler.result.toString());
assertEquals("CROPRECL", acceptorHandler.result.toString());
} finally {
acceptor.unbind();
}
}
@Test
public void testCloseRequest() throws Exception {
int port = AvailablePortFinder.getNextAvailable(1024);
ExpiringSessionRecycler recycler = new ExpiringSessionRecycler(10, 1);
MockHandler acceptorHandler = new MockHandler();
MockHandler connectorHandler = new MockHandler();
acceptor.getSessionConfig().setIdleTime(IdleStatus.READER_IDLE, 1);
acceptor.setHandler(acceptorHandler);
acceptor.setSessionRecycler(recycler);
acceptor.bind(new InetSocketAddress(port));
try {
connector.setHandler(connectorHandler);
ConnectFuture future = connector.connect(new InetSocketAddress(
"localhost", port));
future.awaitUninterruptibly();
// Write whatever to trigger the acceptor.
future.getSession().write(IoBuffer.allocate(1)).awaitUninterruptibly();
// Make sure the connection is closed before recycler closes it.
while (acceptorHandler.session == null) {
Thread.yield();
}
acceptorHandler.session.close(true);
assertTrue(
acceptorHandler.session.getCloseFuture().awaitUninterruptibly(3000));
IoSession oldSession = acceptorHandler.session;
// Wait until all events are processed and clear the state.
long startTime = System.currentTimeMillis();
while (acceptorHandler.result.length() < 8) {
Thread.yield();
if (System.currentTimeMillis() - startTime > 5000) {
throw new Exception();
}
}
acceptorHandler.result.setLength(0);
acceptorHandler.session = null;
// Write whatever to trigger the acceptor again.
WriteFuture wf = future.getSession().write(
IoBuffer.allocate(1)).awaitUninterruptibly();
assertTrue(wf.isWritten());
// Make sure the connection is closed before recycler closes it.
while (acceptorHandler.session == null) {
Thread.yield();
}
acceptorHandler.session.close(true);
assertTrue(
acceptorHandler.session.getCloseFuture().awaitUninterruptibly(3000));
future.getSession().close(true).awaitUninterruptibly();
assertNotSame(oldSession, acceptorHandler.session);
} finally {
acceptor.unbind();
}
}
private class MockHandler extends IoHandlerAdapter {
public volatile IoSession session;
public final StringBuffer result = new StringBuffer();
/**
* Default constructor
*/
public MockHandler() {
super();
}
@Override
public void exceptionCaught(IoSession session, Throwable cause)
throws Exception {
this.session = session;
result.append("CA");
}
@Override
public void messageReceived(IoSession session, Object message)
throws Exception {
this.session = session;
result.append("RE");
}
@Override
public void messageSent(IoSession session, Object message)
throws Exception {
this.session = session;
result.append("SE");
}
@Override
public void sessionClosed(IoSession session) throws Exception {
this.session = session;
result.append("CL");
}
@Override
public void sessionCreated(IoSession session) throws Exception {
this.session = session;
result.append("CR");
}
@Override
public void sessionIdle(IoSession session, IdleStatus status)
throws Exception {
this.session = session;
result.append("ID");
}
@Override
public void sessionOpened(IoSession session) throws Exception {
this.session = session;
result.append("OP");
}
}
}