![]() ![]() In this case, in order for the event to hit the listener, it must be registered at the top level of the code (synchronously). In Manifest V3 the service worker is restarted when an event occurs. In Manifest V2 environment, it didn't matter where in the code the event listener was located – its registration could occur asynchronously because the background page was always running and never restarted. If it does, it wakes the extension's service worker and passes the event to the listener. When the event happens, the browser sees if it has an extension that needs to be woken up in response to this event. In a nutshell, it works like this: the service worker logs the event listener, and the browser records the event. triggering of the timer set via Alarm API (more on that later).choosing any action from the context menu on the page (adding the website to exclusions, changing the exclusions mode).a new browser tab opening, refreshing an existing tab, or switching between browser windows.messages from an extension's popup, options page or content script.We mentioned above that events and API calls prevent the service worker from entering hibernation mode. For example, it will not receive the latest information about available locations, remaining free traffic, excluded services, other user devices connected to the account, and available bonuses it will not be able to update access keys and the tray icon with the extension status. Stopping the service worker threatens AdGuard VPN Browser Extension with many errors. So, if the extension doesn't make any API calls or events within 30 seconds to prevent the service worker from falling asleep, the browser will simply stop the script. Chrome keeps a close eye on the service worker. But if an extension has to help the user constantly, like AdGuard VPN, a service worker that frequently goes to sleep and wakes up is more likely to increase the load on the system than decrease it.Īnd that's not all. And for infrequently used browser extensions, this will work. The idea behind Google Chrome is to greatly reduce the consumption of system resources. It allows extensions to run in the background only when the user needs them. In Manifest V3, the background page is replaced by the service worker. ![]() The previous version of Manifest had a background page that allowed the extension to run once after installation or when a browser was opened, and continue to work in the background. Let's talk about the problems we encountered and how we solved them. With our experience in developing the AdGuard MV3, we didn't expect working on AdGuard VPN MV3 to be a walk in the park, and we were right. However, at that time we proved that there is a future for ad blockers even in the reality of Manifest V3.ĭespite the fact that Google has extended the lifetime of Manifest V2 extensions until at least January 2024, we have not postponed the development of AdGuard VPN Browser Extension which works according to Manifest V3 rules, and we are ready to present it to you now. The development was challenging: we faced many problems along the way. In August 2022, AdGuard released the world's first ad-blocking browser extension based on Manifest V3. Not only do they cause some inconvenience, but they also lead to a partial loss of functionality. It makes significant changes to the rules that browser extensions must follow. I am not sure this is related, but I have noticed that Huawei seems to be using (followed by something more) rather than, but I do not think this is an issue as I can resolve both correctly via V3, the new Chrome API version, has become a stumbling block for many developers. As soon as I disable private DNS, WiFi works again. What I mean by that is that WiFi stays connected apparently, but Android switches to mobile data nonetheless (I can see the letters LTE appearing over the mobile signal indicator, and speed tests/IP addresses reveal I am using mobile data). However, as soon as I switch private DNS to, WiFi stops working. I observe some strange behavior with a Huawei P30 on a company (Guest) WiFi with a captive portal (that does not usually appear, just only once in a year or so).Įssentially, I can connect to the WiFi without private DNS, and I can connect to the WiFi with private DNS via. ![]()
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