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1 package myVncProxy;
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2
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3 import java.io.ByteArrayInputStream;
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4 import java.io.DataInputStream;
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5 import java.io.IOException;
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6 import java.net.DatagramPacket;
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7 import java.net.InetAddress;
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8 import java.net.MulticastSocket;
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9
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10 import myVncProxy.TextBox;
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11
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12 public class GetBroadCast implements Runnable {
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13 static final String McastAddr = "224.0.0.1";
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14 static final int Port = 8183;
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15 static final int BufSize = 1024;
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16 private byte[] buf = new byte[BufSize];
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17 private byte[] resorve = new byte[BufSize];
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18 private ByteArrayInputStream inputStream;
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19 private boolean stopFlag = false;
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20 private VncProxyService vps;
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21 private BroadCast bCast;
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22
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23 public GetBroadCast(VncProxyService _vps){
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24 vps = _vps;
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25 bCast = new BroadCast(vps.rfb.acceptPort+"*"+vps.host+"*"
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26 +vps.rfb.desktopName+"*"+vps.acc.getMyAddress()+"*");
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27 }
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28
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29 private void getData() {
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30 try {
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31 InetAddress mAddr = InetAddress.getByName(McastAddr);
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32 MulticastSocket soc = new MulticastSocket(Port);
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33 DatagramPacket recvPacket = new DatagramPacket(buf, BufSize);
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34 soc.joinGroup(mAddr);
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35 bCast.createSocket();
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36 while (true) {
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37 soc.receive(recvPacket);
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38 inputStream = new ByteArrayInputStream(recvPacket.getData());
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39 inputStream.read(resorve);
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40 if("who".equals(castString(resorve))){
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41 for(int i=0;i<4;i++){
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42 bCast.sendData();
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43 }
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44 }
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45 }
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46 } catch (IOException e) {
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47 e.printStackTrace();
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48 }
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49 }
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50
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51 private int castInt(byte[] a) {
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52 int value = 0;
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53 ByteArrayInputStream bais = new ByteArrayInputStream(a);
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54 DataInputStream dis = new DataInputStream(bais);
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55 try {
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56 value = dis.readInt();
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57 } catch (IOException e) {
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58 }
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59 System.out.println(value);
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60 return value;
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61 }
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62
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63 private String castString(byte[] a) {
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64 String recover = new String(a);
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65 recover = recover.replace("¥n", "");
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66 recover = recover.trim();
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67 System.out.println(recover);
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68 return recover;
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69 }
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70
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71
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72 @Override
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73 public void run() {
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74 getData();
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75 }
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76
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77 public void setStopFlag(boolean stopFlag) {
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78 this.stopFlag = stopFlag;
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79 }
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80
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81 public boolean isStopFlag() {
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82 return stopFlag;
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83 }
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84
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85 }
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