protected void destroy() {
search_destroyed = true;
if (twc != null) {
twc.destroy();
twc = null;
}
if (timer_event != null) {
timer_event.cancel();
timer_event = null;
}
if (control_socket != null) {
try {
control_socket.close();
} catch (Throwable e) {
}
control_socket = null;
}
}
protected Searcher(boolean _persistent, boolean _async) throws DeviceManagerException {
try {
int last_port = COConfigurationManager.getIntParameter("devices.tivo.net.tcp.port", 0);
if (last_port > 0) {
try {
ServerSocket ss = new ServerSocket(last_port);
ss.setReuseAddress(true);
ss.close();
} catch (Throwable e) {
last_port = 0;
}
}
twc = plugin_interface.getTracker().createWebContext(last_port, Tracker.PR_HTTP);
tcp_port = twc.getURLs()[0].getPort();
COConfigurationManager.setParameter("devices.tivo.net.tcp.port", tcp_port);
twc.addPageGenerator(
new TrackerWebPageGenerator() {
public boolean generate(
TrackerWebPageRequest request, TrackerWebPageResponse response)
throws IOException {
String id = (String) request.getHeaders().get("tsn");
if (id == null) {
id = (String) request.getHeaders().get("tivo_tcd_id");
}
if (id != null && is_enabled) {
persistent = true;
DeviceTivo tivo =
foundTiVo(request.getClientAddress2().getAddress(), id, null, null);
return (tivo.generate(request, response));
}
return (false);
}
});
control_socket = new DatagramSocket(null);
control_socket.setReuseAddress(true);
try {
control_socket.setSoTimeout(60 * 1000);
} catch (Throwable e) {
}
InetAddress bind = NetworkAdmin.getSingleton().getSingleHomedServiceBindAddress();
control_socket.bind(new InetSocketAddress(bind, CONTROL_PORT));
timer_event =
SimpleTimer.addPeriodicEvent(
"Tivo:Beacon",
60 * 1000,
new TimerEventPerformer() {
public void perform(TimerEvent event) {
if (!(manager_destroyed || search_destroyed)) {
sendBeacon();
}
// see if time to auto-shutdown searching
if (!persistent) {
synchronized (DeviceTivoManager.this) {
if (SystemTime.getMonotonousTime() - start >= LIFE_MILLIS) {
log("Terminating search, no devices found");
current_search = null;
destroy();
}
}
}
}
});
final AESemaphore start_sem = new AESemaphore("TiVo:CtrlListener");
new AEThread2("TiVo:CtrlListener", true) {
public void run() {
start_sem.release();
long successful_accepts = 0;
long failed_accepts = 0;
while (!(manager_destroyed || search_destroyed)) {
try {
byte[] buf = new byte[8192];
DatagramPacket packet = new DatagramPacket(buf, buf.length);
control_socket.receive(packet);
successful_accepts++;
failed_accepts = 0;
if (receiveBeacon(packet.getAddress(), packet.getData(), packet.getLength())) {
persistent = true;
}
} catch (SocketTimeoutException e) {
} catch (Throwable e) {
if (control_socket != null && !search_destroyed && !manager_destroyed) {
failed_accepts++;
log("UDP receive on port " + CONTROL_PORT + " failed", e);
}
if ((failed_accepts > 100 && successful_accepts == 0) || failed_accepts > 1000) {
log(" too many failures, abandoning");
break;
}
}
}
}
}.start();
if (_async) {
new DelayedEvent(
"search:delay",
5000,
new AERunnable() {
public void runSupport() {
sendBeacon();
}
});
} else {
start_sem.reserve(5000);
sendBeacon();
}
log("Initiated device search");
} catch (Throwable e) {
log("Failed to initialise search", e);
destroy();
throw (new DeviceManagerException("Creation failed", e));
}
}