service-worker

I've done a simple service-worker to defer requests that fail for my JS application (following this example ) and it works well. But I still have a problem when requests succeed: the requests are done twice. One time normaly and one time by the service-worker due to the fetch() call I guess. It's a real problem because when the client want to save datas, they are saved twice... Here is the code : const queue = new workbox.backgroundSync.Queue('deferredRequestsQueue'); const requestsToDefer = [ { urlPattern: /\/sf\/observation$/, method: 'POST' } ] function isRequestAllowedToBeDeferred (request

My web app is like this: I have an Apache server running on port 80, with virtual hosts for my domain and different subdomains, including port 443 for SSL. I have a nodejs application running on port 5000. All traffic to my main domain is redirected using proxypass from apache to nodejs. NodeJs then loads Service Workers. Problem: ON first load of application in online mode it works properly.Shows Service worker registered over the complete domain message as expected. Even for some css,js and img it return response fromServiceWorker. But now when I open same page on offline mode service worker

Here's what's on console: (unknown): #2514: An unknown error occurred when fetching the script. [Service Workers] I am get the above error on my dev console when the service-worker has taken over or skipped waiting and I reload the page with the network turned off. The thing is I get plenty of fetch errors on the console because obviously none of the requests are passing through but there is just one error on SW dev console (Click image): What is it about? The error message itself isn't telling much about the issue, like the request it bailed out on or similar. I think you need to add your

Suppose I provide a push notification service used by different websites. This service requires a service worker to be installed on my customers' sites. I want the architecture to have a few properties: Completely static resources. The process of installing the service worker files and configuring the JS snippet, etc. only needs to be done once. The ability to update the service worker at any time. I want to be able to update the service worker at any time to fix bugs, deploy improvements, etc. Satisfying both of these constraints is difficult because the browser only installs a new version of

I have a Java web application which needs to send manual and automatic notifications to the user. This notification should go to the user's browser as well as the mobile devices (both iOS & Android). I found out there is no way to send notifications to mobile devices directly if there is no native application running on the mobile device. So my only option seems to be web push notifications. I went through a few articles and I found it very confusing. I don't know where to start. Can I send the notifications directly from Java Code? Or do I have to use FCM(Firebse)? If so can I call FCM

I was analyzing the service workers and cache storage we have implemented in our website. Going through the process, I found out that the amount of cache storage used by the website is huge. The cumulative size of the files that I am adding to cache storage is not more than 5-6 MB . But in the chrome dev tools, it shows approximately 130 MB storage used. chrome - v 63 . OS - osx In incognito mode it shows usage as high as 100 MB which causes Quota Exceeded error . Even after clearing browsing data from chrome settings, and reloading the webpage (bandwidth speed - 1MBps) , just after 4-5