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wip, fix chrome sleep issues #208

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wip, fix chrome sleep issues #208

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35 changes: 17 additions & 18 deletions src/background/main.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -82,24 +82,23 @@ setBaseUrl(client.baseURL)
* https://stackoverflow.com/questions/66618136
*/
if (import.meta.env.VITE_TARGET_BROWSER === 'chrome') {
function setupKeepAlive(): void {
console.debug(
'Setting up keep-alive ping to prevent service worker termination',
)

setInterval(
() => {
console.debug('Keep-alive ping')
// Force some minimal activity
browser.alarms
.get(config.heartbeat.alarmName)
.then(() => console.debug('Keep-alive ping completed'))
.catch((err) => console.error('Keep-alive ping failed:', err))
},
4 * 60 * 1000,
) // 4 minutes (less than Chrome's ~5 minute timeout)
console.debug('Setting up offscreen keep-alive')
const createOffscreen = async () => {
// @ts-ignore
if (await chrome.offscreen.hasDocument()) return
// @ts-ignore
await chrome.offscreen.createDocument({
url: 'src/offscreen/offscreen.html',
reasons: ['BLOBS'], // BLOBS or AUDIO_PLAYBACK
justification: 'keep service worker running',
})
}

// Start the keep-alive mechanism
setupKeepAlive()
// @ts-ignore
chrome.runtime.onStartup.addListener(createOffscreen)
createOffscreen()
// @ts-ignore
chrome.runtime.onMessage.addListener((msg) => {
if (msg.keepAlive) console.debug('keepAlive')
})
}
10 changes: 10 additions & 0 deletions src/offscreen/offscreen.html
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@@ -0,0 +1,10 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>Offscreen</title>
</head>
<body>
<script type="module" src="./offscreen.ts"></script>
</body>
</html>
5 changes: 5 additions & 0 deletions src/offscreen/offscreen.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
declare var chrome: any

setInterval(() => {
chrome.runtime.sendMessage({ keepAlive: true })
}, 20000)
6 changes: 5 additions & 1 deletion vite.config.ts
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Expand Up @@ -20,7 +20,11 @@ export default defineConfig({
plugins: [
webExtension({
manifest: generateManifest,
additionalInputs: ['src/consent/index.html', 'src/consent/main.ts'],
additionalInputs: [
'src/consent/index.html',
'src/consent/main.ts',
'src/offscreen/offscreen.html',
],
browser: process.env.VITE_TARGET_BROWSER,
}),
],
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