From cb0aa2aefa35c4ed3b638ec6527c97a9455316a8 Mon Sep 17 00:00:00 2001
From: Jason Miller <developit@users.noreply.github.com>
Date: Thu, 20 Jul 2023 15:19:41 -0400
Subject: [PATCH] liveReload: add hearbeat for keepalive

This prevents the WebSocket connection from being closed due to inactivity when using a proxy like Cloudflare.
---
 packages/remix-dev/devServer/liveReload.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/remix-dev/devServer/liveReload.ts b/packages/remix-dev/devServer/liveReload.ts
index e74ca3242bd..3ac6de4b69e 100644
--- a/packages/remix-dev/devServer/liveReload.ts
+++ b/packages/remix-dev/devServer/liveReload.ts
@@ -76,9 +76,12 @@ export async function liveReload(config: RemixConfig) {
     }
   );
 
+  const heartbeat = setInterval(broadcast, 60000, { type: "PING" });
+
   exitHook(() => clean(config));
   return async () => {
     wss.close();
+    clearInterval(heartbeat);
     await dispose();
   };
 }