riki/rkgk
riki/rkgk
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add proper error and disconnect handling

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error handling shows you the error and offers the ability to reload;
disconnect handling shows you that the page will reload in a few seconds.
it uses exponential backoff with some random sprinkled into it to prevent overwhelming the server once people's clients decide to reconnect.
This commit is contained in:
りき萌 2024-08-25 12:53:53 +02:00
parent 84abba3e0b
commit 0d831698e2
8 changed files with 150 additions and 20 deletions
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33
static/index.js
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@ -77,14 +77,35 @@ function readUrl() {
canvasRenderer.viewport.panY = urlData.viewport.y;
canvasRenderer.viewport.zoomLevel = urlData.viewport.zoom;
let session = await newSession(
getUserId(),
getLoginSecret(),
urlData.wallId ?? localStorage.getItem("rkgk.mostRecentWallId"),
{
let session = await newSession({
userId: getUserId(),
secret: getLoginSecret(),
wallId: urlData.wallId ?? localStorage.getItem("rkgk.mostRecentWallId"),
userInit: {
brush: brushEditor.code,
},
);
onError(error) {
connectionStatus.showError(error.source);
},
async onDisconnect() {
let duration = 5000 + Math.random() * 1000;
while (true) {
console.info("waiting a bit for the server to come back up", duration);
await connectionStatus.showDisconnected(duration);
try {
console.info("trying to reconnect");
let response = await fetch("/auto-reload/back-up");
if (response.status == 200) {
window.location.reload();
break;
}
} catch (e) {}
duration = duration * 1.618033989 + Math.random() * 1000;
}
},
});
localStorage.setItem("rkgk.mostRecentWallId", session.wallId);
connectionStatus.hideLoggingIn();