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(wmr/hmr) - implement focus-based reconnect #786

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Merged
merged 3 commits into from
Aug 9, 2021
Merged

(wmr/hmr) - implement focus-based reconnect #786

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80194f0
implement focus-based reconnect
JoviDeCroock Jul 31, 2021
c0c9904
Update client.js
JoviDeCroock Aug 9, 2021
b0757bf
Create brown-gorillas-notice.md
JoviDeCroock Aug 9, 2021
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18 changes: 12 additions & 6 deletions packages/wmr/src/plugins/wmr/client.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ const strip = url => url.replace(/[?&]t=\d+/g, '');
const addTimestamp = (url, time) => url + (/\?/.test(url) ? '&' : '?') + 't=' + time;

const resolve = url => new URL(url, location.origin).href;
let ws, connectTimer, connectDelay = 0;
let ws, visibilityCallback;

/**
* @param {boolean} [needsReload] Force page to reload once it's connected
Expand All @@ -23,6 +23,10 @@ function connect(needsReload) {
ws.addEventListener('open', () => {
connectDelay = 0;
log(`Connected to server.`);
if (visibilityCallback) {
window.removeEventListener('visibilitychange', visibilityCallback);
visibilityCallback = undefined;
}
if (needsReload) {
window.location.reload();
} else {
Expand All @@ -37,11 +41,13 @@ function connect(needsReload) {
}

function reconnect() {
connectDelay = Math.min(connectDelay * 2, 30000) || 500;
connectTimer = setTimeout(() => {
if (ws) ws.close();
connect(false);
}, connectDelay);
if (!visibilityCallback) {
visibilityCallback = () => {
if (document.visibilityState === 'visible')
connect(false);
};
}
window.addEventListener('visibilitychange', visibilityCallback)
}

connect();
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