broadcast

I am searching if Java NIO implements broadcast. I need to create a peer that sends messages to other peers, using multicast or broadcast. I was searching in the API 1.6, but I don't find anything in the DatagramChannel class. Thanks in advance. NIO2 supports multicast, that's in Java 7. http://javanio.info/filearea/nioserver/WhatsNewNIO2.pdf Before NIO2 you have to make use of all kinds of hacks to make a datagram channel join a multicast group. Not sure how they could have left multicast channels out of NIO1. You don't need to use NIO for this, java.net.MulticastSocket supports this directly

I'm trying to create a sever application on PC for many android devices using the same wi-fi network. The devices will find the server's IP by receiving UDP broadcast from it contains the server IP data. I've started by creating a sample udp broadcaster in C# and udp receiver in java but I never managed to get the packet on the android side . here is the code : C#: UdpClient listener = new UdpClient(listenPort); IPEndPoint groupEP = new IPEndPoint(IPAddress.Broadcast, listenPort); listener.Connect(groupEP); listener.EnableBroadcast = true; byte[] data = new byte[1024]; try { while (!done) {

I know how to checking if internet is available or not in the activity, my requirement is, actually i am storing some values in DB when the device in offline ( no internet), when it comes to online have to pass DB values to the server with out user interactivity. how can i achieve this. i got this example How to check the Internet Connection periodically in whole application? but it's working only for one activity , how to make it as global. Shahzad Imam Use this in your receiver <receiver android:name=".UpdateReceiver" > <intent-filter> <action android:name="android.net.conn.CONNECTIVITY

Is there a way to detect from app code when it is being reinstalled. I saw that app update from market can be detected by listening to PACKAGE_REPLACED event in broadcast receiver. But that these events are not delivered to the app , if the app is reinstalled from editor (eclipse ). My requirement is that i am disabling a component(Launcher activity). The app install will fail if it is not enabled. SO everytime before reinstall i want to enable this component. I am talking about the reinstall before publishing in market. While developing , each time i reinstall the app to test some

I'm using celery and want to send broadcast task to couple of workers. I'm trying to do it like is described on http://docs.celeryproject.org/en/latest/userguide/routing.html#broadcast so I create simple app with task: @celery.task def do_something(value): print value and in app I made: from kombu.common import Broadcast CELERY_QUEUES = (Broadcast('broadcast_tasks'), ) CELERY_ROUTES = {'my_app.do_something': {'queue': 'broadcast_tasks'}} and then I was trying to send task to workers with: my_app.do_something.apply_async(['222'], queue='broadcast_tasks') or: my_app.do_something.apply_async([

i have an Object (i.e. not a form) that wants to listen for broadcast messages from Windows, e.g.: WM_SETTINGCHANGE WM_DWMCOLORIZATIONCOLORCHANGED WM_DWMCOMPOSITIONCHANGED WM_THEMECHANGED WM_POWERBROADCAST What is the mechanism in .NET to setup a non-WinForm's window, that can listen for broadcast messages? i.e. Is there a WindowsListener class? Bonus Chatter In the olden days, in other development environments, the framework provided an AllocateHwnd function: HWND listener = AllocateHWnd(ListenerWindowProc); where ListenerWindowProc was my window procedure method: private void

I am developing an app receiving UPD broadcast packet from Wi-Fi camera. It used to be good before I found the problem in receiving UPD broadcast packet at Google Pixel 2 / Pixel 2 XL. To figure out the reason, I made 2 test apps: one is UPD broadcast sender( https://senatech.box.com/s/gmhr391pbl32lqai0mhkffyk6j0ckle5 ), the other is UDP broadcast receiver( https://senatech.box.com/s/abamuor47nlafocs035nfuj90d0uvx0m ). I have tested them on some android devices and found that Google Pixel 2 / Pixel 2 XL cannot revceive UDP broadcast packet. Android devices except Pixel 2 / Pixel 2 XL work well