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Fix continuous longpoll requests due to Phoenix LiveView bug

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Added workaround to clear the longpoll fallback timer after WebSocket
connection is established. The issue was causing hundreds of unnecessary
longpoll requests per second even when WebSocket was working properly.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Graham McIntire 2025-07-28 14:30:21 -05:00
parent 718da63af0
commit 0281180bd1
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1 changed files with 21 additions and 0 deletions
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21
assets/js/app.js
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@ -321,6 +321,27 @@ window.addEventListener("phx:page-loading-stop", (_info) => topbar.hide());
// connect if there are any LiveViews on the page
liveSocket.connect();
// Workaround for Phoenix LiveView bug where fallback timer isn't cleared
// after successful WebSocket connection
window.addEventListener("phx:live_socket:connect", (info) => {
const socket = liveSocket.socket;
if (socket && socket.fallbackTimer) {
clearTimeout(socket.fallbackTimer);
socket.fallbackTimer = null;
console.log("[LiveSocket] Cleared fallback timer after successful connection");
}
});
// Also check periodically in case the event doesn't fire
setTimeout(() => {
const socket = liveSocket.socket;
if (socket && socket.isConnected() && socket.fallbackTimer) {
clearTimeout(socket.fallbackTimer);
socket.fallbackTimer = null;
console.log("[LiveSocket] Cleared lingering fallback timer");
}
}, 5000);
// expose liveSocket on window for web console debug logs and latency simulation:
// >> liveSocket.enableDebug()
// >> liveSocket.enableLatencySim(1000) // enabled for duration of browser session