broadcast

How can I update a broadcast variable in spark streaming?

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Extending the answer By @Rohan Aletty. Here is a sample code of a BroadcastWrapper that refresh broadcast variable based on some ttl public class BroadcastWrapper { private Broadcast<ReferenceData> broadcastVar; private Date lastUpdatedAt = Calendar.getInstance().getTime(); private static BroadcastWrapper obj = new BroadcastWrapper(); private BroadcastWrapper(){} public static BroadcastWrapper getInstance() { return obj; } public JavaSparkContext getSparkContext(SparkContext sc) … Read more

socket.io – how to broadcast messages on a namespace?

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Seems I was able to solve this for myself after opening a bounty. Sorry about that. Anyway, see if this helps: chat.on(‘connection’, function (socket) { socket.on(‘message’, function (msg) { socket.emit(msg); // Send message to sender socket.broadcast.emit(msg); // Send message to everyone BUT sender }); }); However, you could save some bandwidth and create a more … Read more

How to Send BroadCast from one app to another app

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First thing first declare the receiver in app B in the manifest file like this: <receiver android:name=”.MyBroadcastReceiver” android:enabled=”true” android:exported=”true”> <intent-filter> <action android:name=”com.pkg.perform.Ruby” /> </intent-filter> </receiver> when sending the broadcast add FLAG_INCLUDE_STOPPED_PACKAGES flag to the intent [src] because when you broadcast from app A to app B , app B might not be running, this flag … Read more

Is there a broadcast action for volume changes?

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There is no broadcast action, but I did find you can hook up a content observer to get notified when the settings change, volume of streams being some of those settings. Register for the android.provider.Settings.System.CONTENT_URI to be notified of all settings changes: mSettingsContentObserver = new SettingsContentObserver( new Handler() ); this.getApplicationContext().getContentResolver().registerContentObserver( android.provider.Settings.System.CONTENT_URI, true, mSettingsContentObserver ); The … Read more

Using MPI_Bcast for MPI communication

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This is a common source of confusion for people new to MPI. You don’t use MPI_Recv() to receive data sent by a broadcast; you use MPI_Bcast(). Eg, what you want is this: #include <mpi.h> #include <stdio.h> int main(int argc, char** argv) { int rank; int buf; const int root=0; MPI_Init(&argc, &argv); MPI_Comm_rank(MPI_COMM_WORLD, &rank); if(rank == … Read more

WebRTC – scalable live stream broadcasting / multicasting

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As it was pretty much covered here, what you are trying to do here is not possible with plain, old-fashionned WebRTC (strictly peer-to-peer). Because as it was said earlier, WebRTC connections renegotiate encryption keys to encrypt data, for each session. So your broadcaster (B) will indeed need to upload its stream as many times as … Read more