Mercurial > hg > Members > kono > WifiBroadcast

annotate src/wifibroadcast/WifiMulticastChannel.java @ 0:df9d16620c08

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Wifi broad cast test program
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sat, 28 Jul 2012 12:16:49 +0900
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children 649b8573372c
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df9d16620c08 Wifi broad cast test program
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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1 package wifibroadcast;
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2
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3 import java.io.IOException;
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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4 import java.net.InetAddress;
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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5 import java.net.InetSocketAddress;
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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6 import java.net.NetworkInterface;
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7 import java.net.SocketAddress;
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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8 import java.net.StandardProtocolFamily;
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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9 import java.net.StandardSocketOptions;
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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10 import java.nio.ByteBuffer;
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11 import java.nio.channels.DatagramChannel;
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12
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13 public class WifiMulticastChannel implements WifiReciver,WifiSender {
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14 private InetAddress mAddr;
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15 private DatagramChannel dc;
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16 private SocketAddress sAddr;
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17
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18 public WifiMulticastChannel(String mCASTADDR, int port) throws IOException {
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19 // join multicast group on this interface, and also use this
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Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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20 // interface for outgoing multicast datagrams
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21 NetworkInterface ni = NetworkInterface.getByName("en0");
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22
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23 dc = DatagramChannel.open(StandardProtocolFamily.INET)
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24 .setOption(StandardSocketOptions.SO_REUSEADDR, true)
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25 .bind(sAddr = new InetSocketAddress(port))
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26 .setOption(StandardSocketOptions.IP_MULTICAST_IF, ni);
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27
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28 mAddr = InetAddress.getByName(mCASTADDR);
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29
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30 dc.join(mAddr, ni);
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31
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32 }
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33
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34 @Override
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35 public void recieve(ByteBuffer testData, long timeout) throws IOException {
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36 dc.receive(testData);
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37 }
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38
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39 @Override
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40 public void send(ByteBuffer testData) throws IOException {
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41 dc.send(testData, sAddr);
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42 }
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43
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44 }