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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.example.echoserver;
    21
    22  import static org.junit.Assert.assertEquals;
    23  import static org.junit.Assert.assertTrue;
    24  import static org.junit.Assert.fail;
    25
    26  import java.net.InetSocketAddress;
    27
    28  import org.apache.mina.core.RuntimeIoException;
    29  import org.apache.mina.core.buffer.IoBuffer;
    30  import org.apache.mina.core.future.ConnectFuture;
    31  import org.apache.mina.core.future.WriteFuture;
    32  import org.apache.mina.core.service.IoConnector;
    33  import org.apache.mina.core.service.IoHandlerAdapter;
    34  import org.apache.mina.core.session.IoSession;
    35  import org.apache.mina.core.write.WriteException;
    36  import org.apache.mina.example.echoserver.ssl.BogusSslContextFactory;
    37  import org.apache.mina.filter.ssl.SslFilter;
    38  import org.apache.mina.transport.socket.nio.NioDatagramConnector;
    39  import org.apache.mina.transport.socket.nio.NioSocketConnector;
    40  import org.apache.mina.util.AvailablePortFinder;
    41  import org.junit.Before;
    42  import org.junit.Test;
    43  import org.slf4j.Logger;
    44  import org.slf4j.LoggerFactory;
    45
    46  /**
    47   * Tests echo server example.
    48   *
    49   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
    50   */
    51  public class ConnectorTest extends AbstractTest {
    52      private final static Logger LOGGER = LoggerFactory.getLogger(ConnectorTest.class);
    53
    54      private static final int TIMEOUT = 10000; // 10 seconds
    55
    56      private final int COUNT = 10;
    57
    58      private final int DATA_SIZE = 16;
    59
    60      private EchoConnectorHandler handler;
    61      private SslFilter connectorSSLFilter;
    62
    63      public ConnectorTest() {
    64          // Do nothing
    65      }
    66
    67      @Before
    68      public void setUp() throws Exception {
    69          super.setUp();
    70          handler = new EchoConnectorHandler();
    71          connectorSSLFilter = new SslFilter(BogusSslContextFactory
    72                  .getInstance(false));
    73          connectorSSLFilter.setUseClientMode(true); // set client mode
    74      }
    75
    76      @Test
    77      public void testTCP() throws Exception {
    78          IoConnector connector = new NioSocketConnector();
    79          testConnector(connector);
    80      }
    81
    82      @Test
    83      public void testTCPWithSSL() throws Exception {
    84          useSSL = true;
    85          // Create a connector
    86          IoConnector connector = new NioSocketConnector();
    87
    88          // Add an SSL filter to connector
    89          connector.getFilterChain().addLast("SSL", connectorSSLFilter);
    90          testConnector(connector);
    91      }
    92
    93      @Test
    94      public void testUDP() throws Exception {
    95          IoConnector connector = new NioDatagramConnector();
    96          testConnector(connector);
    97      }
    98
    99      private void testConnector(IoConnector connector) throws Exception {
    100         connector.setHandler(handler);
    101
    102         //System.out.println("* Without localAddress");
    103         testConnector(connector, false);
    104
    105         //System.out.println("* With localAddress");
    106         testConnector(connector, true);
    107     }
    108
    109     private void testConnector(IoConnector connector, boolean useLocalAddress)
    110             throws Exception {
    111         IoSession session = null;
    112         if (!useLocalAddress) {
    113             ConnectFuture future = connector.connect(new InetSocketAddress(
    114                     "127.0.0.1", port));
    115             future.awaitUninterruptibly();
    116             session = future.getSession();
    117         } else {
    118             int clientPort = port;
    119             for (int i = 0; i < 65536; i++) {
    120                 clientPort = AvailablePortFinder
    121                         .getNextAvailable(clientPort + 1);
    122                 try {
    123                     ConnectFuture future = connector.connect(
    124                             new InetSocketAddress("127.0.0.1", port),
    125                             new InetSocketAddress(clientPort));
    126                     future.awaitUninterruptibly();
    127                     session = future.getSession();
    128                     break;
    129                 } catch (RuntimeIoException e) {
    130                     // Try again until we succeed to bind.
    131                 }
    132             }
    133
    134             if (session == null) {
    135                 fail("Failed to find out an appropriate local address.");
    136             }
    137         }
    138
    139         // Run a basic connector test.
    140         testConnector0(session);
    141
    142         // Send closeNotify to test TLS closure if it is TLS connection.
    143         if (useSSL) {
    144             connectorSSLFilter.stopSsl(session).awaitUninterruptibly();
    145
    146             System.out
    147                     .println("-------------------------------------------------------------------------------");
    148             // Test again after we finished TLS session.
    149             testConnector0(session);
    150
    151             System.out
    152                     .println("-------------------------------------------------------------------------------");
    153
    154             // Test if we can enter TLS mode again.
    155             //// Send StartTLS request.
    156             handler.readBuf.clear();
    157             IoBuffer buf = IoBuffer.allocate(1);
    158             buf.put((byte) '.');
    159             buf.flip();
    160             session.write(buf).awaitUninterruptibly();
    161
    162             //// Wait for StartTLS response.
    163             waitForResponse(handler, 1);
    164
    165             handler.readBuf.flip();
    166             assertEquals(1, handler.readBuf.remaining());
    167             assertEquals((byte) '.', handler.readBuf.get());
    168
    169             // Now start TLS connection
    170             assertTrue(connectorSSLFilter.startSsl(session));
    171             testConnector0(session);
    172         }
    173
    174         session.close(true).awaitUninterruptibly();
    175     }
    176
    177     private void testConnector0(IoSession session) throws InterruptedException {
    178         EchoConnectorHandler handler = (EchoConnectorHandler) session
    179                 .getHandler();
    180         IoBuffer readBuf = handler.readBuf;
    181         readBuf.clear();
    182         WriteFuture writeFuture = null;
    183         for (int i = 0; i < COUNT; i++) {
    184             IoBuffer buf = IoBuffer.allocate(DATA_SIZE);
    185             buf.limit(DATA_SIZE);
    186             fillWriteBuffer(buf, i);
    187             buf.flip();
    188
    189             writeFuture = session.write(buf);
    190
    191             if (session.getService().getTransportMetadata().isConnectionless()) {
    192                 // This will align message arrival order in connectionless transport types
    193                 waitForResponse(handler, (i + 1) * DATA_SIZE);
    194             }
    195         }
    196
    197         writeFuture.awaitUninterruptibly();
    198
    199         waitForResponse(handler, DATA_SIZE * COUNT);
    200
    201         // Assert data
    202         //// Please note that BufferOverflowException can be thrown
    203         //// in SocketIoProcessor if there was a read timeout because
    204         //// we share readBuf.
    205         readBuf.flip();
    206         LOGGER.info("readBuf: " + readBuf);
    207         assertEquals(DATA_SIZE * COUNT, readBuf.remaining());
    208         IoBuffer expectedBuf = IoBuffer.allocate(DATA_SIZE * COUNT);
    209
    210         for (int i = 0; i < COUNT; i++) {
    211             expectedBuf.limit((i + 1) * DATA_SIZE);
    212             fillWriteBuffer(expectedBuf, i);
    213         }
    214
    215         expectedBuf.position(0);
    216
    217         isEquals(expectedBuf, readBuf);
    218     }
    219
    220     private void waitForResponse(EchoConnectorHandler handler, int bytes)
    221             throws InterruptedException {
    222         for (int j = 0; j < TIMEOUT / 10; j++) {
    223             if (handler.readBuf.position() >= bytes) {
    224                 break;
    225             }
    226             Thread.sleep(10);
    227         }
    228
    229         assertEquals(bytes, handler.readBuf.position());
    230     }
    231
    232     private void fillWriteBuffer(IoBuffer writeBuf, int i) {
    233         while (writeBuf.remaining() > 0) {
    234             writeBuf.put((byte) i++);
    235         }
    236     }
    237
    238     private static class EchoConnectorHandler extends IoHandlerAdapter {
    239         private final IoBuffer readBuf = IoBuffer.allocate(1024);
    240
    241         private EchoConnectorHandler() {
    242             readBuf.setAutoExpand(true);
    243         }
    244
    245         @Override
    246         public void messageReceived(IoSession session, Object message) {
    247             readBuf.put((IoBuffer) message);
    248         }
    249
    250         @Override
    251         public void messageSent(IoSession session, Object message) {
    252         }
    253
    254         @Override
    255         public void exceptionCaught(IoSession session, Throwable cause) {
    256             LOGGER.warn("Unexpected exception.", cause);
    257             if (cause instanceof WriteException) {
    258                 WriteException e = (WriteException) cause;
    259                 LOGGER.warn("Failed write requests: {}", e.getRequests());
    260             }
    261         }
    262     }
    263 }