background-process

Now for those who don't know, can go to https://web.whatsapp.com/ and sync your Whatsapp chats by exchanging a QR code and chat via the web extension of the app. I am not interested in how they have an initial handshake( might be communicating with whatsapp servers) nor how they sync data so fast for chatting (might be using Open sockets directly from device to client). I am curious as to how the app works in Background on iOS . AFAIK running a background Intent Service is pretty simple. But not for iOS. iOS allows only up to 30 seconds after the app is shut down normally. 1) I tried crashing

I have an app which needs to communicate with a server (to refresh it's data) once every 24 hours. This needs to happen even if the app is not open, nor in the background. Ideally what I'd like is: Every 24 hours, my server sends a push notification to iPad This wakes up the app, and runs the code necessary to refresh the data The notification is then discarded Is any of this possible? Is the app only woken up AFTER the user clicks on the notification? Or can I run some code before showing the notification? Can I even discard the notification message? If Push notifications are not the right

This question already has an answer here: How to run a background task in a servlet based web application? 5 answers I am using JSP/Servlet on Apache Tomcat. I have to run a method every 10 minutes. How can I achieve this? As you're on Tomcat, which is just a barebones servletcontainer, you can't use EJB's @Schedule for this which is recommended by Java EE specification. Your best bet is then the ScheduledExecutorService from Java 1.5's java.util.concurrent package. You can trigger this with help of a ServletContextListener like follows: @WebListener public class BackgroundJobManager

I have a service for sending http request that runs on background and works fine on "normal mode". The problem is when I put my phone on "battery saver mode", the service not working. But, apps like Whatsapp still working. Do you have any idea what's going on? Mobile applications like Whatsapp must be requesting permission to exempt them from Doze/battery saving and App standby mode. It is possible to configure this manually by configuring the Whitelist in Settings > Battery > Battery Optimization . Alternatively from API 23, you can use permissions model to request users to whitelist them

This question already has an answer here: How to run a python script in the background? 5 answers I have been trying to code a python script which reads data from a serial port. It worked well from the command line but I need it to run as a background process without any command line interface. The script has a while loop which reads the next byte of data from a serial port and simulates a key press accordingly. For the keypresses to be focused on the current window, instead of python command line, I need the script to run as a background process. I have read few answers here but nothing rang

How can I run a shell script and immediately background it, however keep the ability to inspect its output any time by tailing /tmp/output.txt It would be nice if I can foreground the process too later. PS It would be really cool if you can also show me how to "send" the backgrounded process in to a gnu screen that may or may not have been initialized. To 'background' a process when you start it Simply add an ampersand ( & ) after the command. If the program writes to standard out, it will still write to your console/terminal. To foreground the process, simply use the fg command. (You can see

I have two php scripts that need to be run as continuous back ground processes in WAMP server. Wamp server is installed in window 7 PC. These scripts are already reside in separate folder in the www root directory. Apache Version :2.2.8 PHP Version :5.2.6 Since this is not a unix platform I can't use nohup php script.php > /dev/null & command to do this job. I'm looking for similar kind of command or method which works in wamp server windows platform. Can anyone explain the steps I need to be taken to do this task? create a batch file to run your php script using php executable "C:\wamp\php