broadcast

Here's what I'm trying to do- A server sends out "Alive message to all the PCs on the network and the PCs which are up and running, respond to the call by sending their IP. I'm looking at a lightweight piece of coding as this will form a small bit of my application. I've looked at Jini and other services but find that I may not need even half of their features(except for the network discovery) Is it ok if I: 1. Use a for loop where a server opens a socket, checks(using a for loop) if all the IPs x.x.x.x are reachable by sending an "Alive" message. 2. On receiving the "alive" message at the

I am currently trying to make a broadcast receiver which will invoke after android device boots and then will run a background service. I have tried many examples but don't know where I'm going wrong. I am following this example: https://github.com/commonsguy/cw-advandroid/tree/master/SystemEvents/OnBoot I have imported this whole project in my workspace and tried to run. But the receiver didn't invoked or so. Please help me out. My Testing Device is: Motorolla Xoom with ICS 4.0.3 EDIT Manifest <uses-sdk android:minSdkVersion="8" /> <supports-screens android:anyDensity="true" android

I have used sc.broadcast for lookup files to improve the performance. I also came to know there is a function called broadcast in Spark SQL Functions. What is the difference between two? Which one i should use it for broadcasting the reference/look up tables? If you want to achieve broadcast join in Spark SQL you should use broadcast function (combined with desired spark.sql.autoBroadcastJoinThreshold configuration). It will: Mark given relation for broadcasting. Adjust SQL execution plan. When output relation is evaluated it will take care of collecting data, and broadcasting, and applying

When using Dataframe broadcast function or the SparkContext broadcast functions, what is the maximum object size that can be dispatched to all executors? broadcast function : Default is 10mb but we have used till 300 mb which is controlled by spark.sql.autoBroadcastJoinThreshold . AFAIK, It all depends on memory available. so there is no definite answer for this. what I would say is, it should be less than large dataframe and you can estimate large or small dataframe size like below... import org.apache.spark.util.SizeEstimator logInfo(SizeEstimator.estimate(yourlargeorsmalldataframehere))

Is it possible to detect touch events from within another application, specifically swipes? I'd like to be able to detect if the user has swiped left or right (even with 2 fingers - but not required). Perhaps there is a service or broadcast I can listen to. or failing that, is there some API perhaps that I can poll say 10 times a second to get the touch state and I can compute the rest (why, I remember writing a mouse driver strobing the COM1 port with IN OUTs in 8086 assembler coded in a TSR on a XT...)! Anyway, any help appreciated. (I think it could be done by hijacking the primary Launcher

New to Angular 2. I'm working on broadcast a event between same level component. Currently I know EventEmitter just can transfer a event to upper level component. I have checked this this link and know observable may be a way to solve my problem, but the sample in that url seems not work for me. Does anyone know how to use it(observable) for broadcast event or some other way to transfer event to same level components? You just need to create some service that will emit messages on which you can subscribe. It can be Observable from rxjs , EventEmitter from node.js , or anything else that

I am trying to create multiple proximity alerts but I cant get it to work... I think that the broadcast receiver gets overwritten and thus is handling only the last broadcast. So if I had two points close by only the one whose intent was created last will generate an alert... I read that I should use request codes but I have no idea on how to do that... My method for setting up the pending intents and the broadcast receiver... private void addProximityAlert(double latitude, double longitude, String poiName, String intentfilter) { Bundle extras = new Bundle(); extras.putString("name", poiName);

For example: IP Address: 130.45.34.36 Mask: 255.255.240.0 What would be Net ID/Subnet Address, and Broadcast Address? Let's write both in binary: 130.45.34.36 = 10000010.00101101.00100010.00100100 255.255.240.0 = 11111111.11111111.11110000.00000000 A bitwise AND between the two would give us the network address: 10000010.00101101.00100010.00100100 (ip address) AND 11111111.11111111.11110000.00000000 (subnet mask) = 10000010.00101101.00100000.00000000 = 130.45.32.0 (the resulting network address) A bitwise OR between the network address and the inverted subnet mask would give us the broadcast