From c906fea77adb2daad28a521f06e68d5bbc4bce4d Mon Sep 17 00:00:00 2001
From: Samuel Newman <mozzius@protonmail.com>
Date: Wed, 18 Feb 2026 19:03:23 +0000
Subject: [PATCH] Fix webpack dev server freezing after repeated refreshes
 (#9865)

---
 webpack.config.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/webpack.config.js b/webpack.config.js
index 79e2bfd5f7..db67d72e92 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -36,6 +36,15 @@ module.exports = async function (env, argv) {
   ]
   if (env.mode === 'development') {
     config.plugins.push(new ReactRefreshWebpackPlugin())
+    // Reap zombie HMR WebSocket connections that linger after refresh.
+    // Without this, dead sockets exhaust the browser's per-origin connection
+    // pool and the dev server stops responding.
+    config.devServer.onListening = devServer => {
+      devServer.server.on('connection', socket => {
+        socket.setTimeout(10000)
+        socket.on('timeout', () => socket.destroy())
+      })
+    }
   } else {
     // Support static CDN for chunks
     config.output.publicPath = 'auto'