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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.core.nio.udp;
    21
    22  import io.netty.bootstrap.Bootstrap;
    23  import io.netty.buffer.ByteBuf;
    24  import io.netty.channel.ChannelHandlerContext;
    25  import io.netty.channel.ChannelInitializer;
    26  import io.netty.channel.ChannelOption;
    27  import io.netty.channel.SimpleChannelInboundHandler;
    28  import io.netty.channel.nio.NioEventLoopGroup;
    29  import io.netty.channel.socket.DatagramChannel;
    30  import io.netty.channel.socket.DatagramPacket;
    31  import io.netty.channel.socket.nio.NioDatagramChannel;
    32
    33  import java.io.IOException;
    34  import java.net.InetSocketAddress;
    35  import java.util.concurrent.CountDownLatch;
    36
    37  import org.apache.mina.core.BenchmarkClient;
    38
    39  /**
    40   * A Netty 3 based UDP client
    41   * @author <a href="http://mina.apache.org">Apache MINA Project</a>
    42   */
    43  public class Netty4UdpBenchmarkClient implements BenchmarkClient {
    44
    45      private Bootstrap bootstrap;
    46
    47      /**
    48       *
    49       */
    50      public Netty4UdpBenchmarkClient() {
    51      }
    52
    53      /**
    54       * {@inheritedDoc}
    55       */
    56      public void start(final int port, final CountDownLatch counter, final byte[] data) throws IOException {
    57          bootstrap = new Bootstrap();
    58          bootstrap.option(ChannelOption.SO_SNDBUF, 65536);
    59          bootstrap.group(new NioEventLoopGroup());
    60          bootstrap.channel(NioDatagramChannel.class);
    61          bootstrap.handler(new ChannelInitializer<DatagramChannel>() {
    62
    63              @Override
    64              protected void initChannel(DatagramChannel ch) throws Exception {
    65                  ch.pipeline().addLast(new SimpleChannelInboundHandler<DatagramPacket>() {
    66                      private void sendMessage(ChannelHandlerContext ctx, byte[] data, InetSocketAddress address) {
    67                          ByteBuf buf = ctx.alloc().buffer(data.length);
    68                          buf.writeBytes(data);
    69                          ctx.writeAndFlush(new DatagramPacket(buf, address));
    70                      }
    71
    72                      @Override
    73                      public void channelActive(ChannelHandlerContext ctx) throws Exception {
    74                          sendMessage(ctx, data, new InetSocketAddress("localhost", port));
    75                      }
    76
    77                      @Override
    78                      protected void channelRead0(ChannelHandlerContext ctx, DatagramPacket message) throws Exception {
    79                          for(int i=0; i < message.content().readableBytes();i++) {
    80                              counter.countDown();
    81                              if (counter.getCount() > 0) {
    82                                  sendMessage(ctx, data, message.sender());
    83                              } else {
    84                                  ctx.channel().close();
    85                              }
    86                          }
    87                      }
    88                  });
    89              }
    90          });
    91          bootstrap.bind(port+1);
    92      }
    93
    94      /**
    95       * {@inheritedDoc}
    96       */
    97      public void stop() throws IOException {
    98          bootstrap.group().shutdownGracefully();
    99      }
    100 }