private void acquireMulticastLock() {
if (null != mWifiMulticastLock && mWifiMulticastLock.isHeld()) {
mWifiMulticastLock.release();
}
mWifiMulticastLock = mWifiManager.createMulticastLock(TAG);
mWifiMulticastLock.setReferenceCounted(true);
mWifiMulticastLock.acquire();
}
@Override
public void run() {
WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
multicastLock = wifiManager.createMulticastLock("multicast.test");
multicastLock.acquire();
try {
findServerIpAddress();
} catch (IOException e) {
e.printStackTrace();
}
multicastLock.release();
}
@Override
protected void onDestroy() {
Log.e("SDL", "onDestroy()");
if (toastShot != null) toastShot.cancel();
if (player != null) player.onDestroy();
stopProgressTask();
System.gc();
if (multicastLock != null) {
multicastLock.release();
multicastLock = null;
}
super.onDestroy();
}
public static void disableMulticast() {
if (mcLock != null) {
mcLock.release();
}
}
public static void releaseMulticastLock(final MulticastLock pMulticastLock) {
if (pMulticastLock.isHeld()) {
pMulticastLock.release();
}
}
@Override
protected Void doInBackground(Void... params) {
Log.d("Discovery: ", "start UDP Server");
String data = "0::deskcon";
try {
// Send "Ask for Hosts" Broadcast
serverSocketUDP = new DatagramSocket(5108);
serverSocketUDP.setBroadcast(true);
InetAddress local = getBroadcast();
// has a broadcast address been found
if (local == null) {
Log.d("Discovery: ", "no Broadcast Address found");
return null;
}
DatagramPacket packet = new DatagramPacket(data.getBytes(), data.length(), local, 5108);
serverSocketUDP.send(packet);
} catch (Exception e) {
e.printStackTrace();
Log.d("Discovery: ", "could not start");
return null;
}
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
MulticastLock lock = wifi.createMulticastLock("net.screenfreeze.deskcon");
lock.acquire();
// Receive responses from desktop hosts
while (!isStopped) {
byte[] receiveData = new byte[128];
DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
try {
serverSocketUDP.receive(receivePacket);
} catch (Exception e) {
}
final InetAddress address = receivePacket.getAddress();
String msg = new String(receiveData, 0, receivePacket.getLength());
// Check for valid msg
boolean isvalismsg = msg.split("::").length == 3;
// Process msg if it is not our own broadcast msg
if (!msg.equals(data) && !isStopped && isvalismsg) {
final DesktopHost desktop = handleReceiveUdp(msg, address);
Log.d("udp from: ", "msg " + msg + " " + address);
runOnUiThread(
new Runnable() {
@Override
public void run() {
dha.add(desktop);
}
});
}
}
lock.release();
return null;
}
private void releaseMulticastLock() {
if (null != mWifiMulticastLock && mWifiMulticastLock.isHeld()) {
mWifiMulticastLock.release();
mWifiMulticastLock = null;
}
}
