Mercurial > hg > Members > kono > WifiBroadcast

annotate src/wifibroadcast/WifiMulticast.java @ 12:e1f43b669cdb

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broadcast on DatagramChannel
author one
date Sun, 29 Jul 2012 14:37:12 +0900
parents 95d58cc5bb0b
children bb2538b7eb8d
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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
df9d16620c08 Wifi broad cast test program
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3 import java.io.IOException;
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4 import java.nio.ByteBuffer;
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5 import java.net.DatagramPacket;
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6 import java.net.InetAddress;
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df9d16620c08 Wifi broad cast test program
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
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7 import java.net.MulticastSocket;
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9 public class WifiMulticast implements WifiReceiver {
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10 private MulticastSocket soc;
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11 private InetAddress mAddr;
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12 private int port;
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95d58cc5bb0b instance for test, multiple senders
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14 public WifiMulticast(int id, String mCASTADDR, int port, SocketType sender) throws IOException {
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15 this.port = port;
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16 try {
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17 mAddr = InetAddress.getByName(mCASTADDR);
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18 soc = new MulticastSocket(port);
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19 soc.joinGroup(mAddr);
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20 } catch (IOException e) {
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21 e.printStackTrace();
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22 }
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23 }
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25 @Override
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26 public void recieve(ByteBuffer testData, long timeout) throws IOException {
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27 DatagramPacket packet = new DatagramPacket(testData.array(),testData.capacity());
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28 soc.receive(packet);
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29 testData.limit(packet.getLength());
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30 testData.position(0);
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31 }
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33 @Override
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34 public void send(ByteBuffer testData) throws IOException {
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35 DatagramPacket sendPacket = new DatagramPacket(testData.array(), testData.limit(),mAddr, port);
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36 soc.send(sendPacket);
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37 testData.position(testData.limit());
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38 }
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40 }
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