From af1f8eaf76062a9fde5570097fc6a75742174d97 Mon Sep 17 00:00:00 2001
From: Meier Lukas <meierschlumpf@gmail.com>
Date: Sun, 26 Jan 2025 21:26:21 +0100
Subject: [PATCH] fix: websocket is not keep alive (#2131)

---
 apps/websocket/src/main.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/apps/websocket/src/main.ts b/apps/websocket/src/main.ts
index ee742c58c..f819c3dff 100644
--- a/apps/websocket/src/main.ts
+++ b/apps/websocket/src/main.ts
@@ -39,6 +39,14 @@ const handler = applyWSSHandler({
       });
     }
   },
+  // Enable heartbeat messages to keep connection open (disabled by default)
+  keepAlive: {
+    enabled: true,
+    // server ping message interval in milliseconds
+    pingMs: 30000,
+    // connection is terminated if pong message is not received in this many milliseconds
+    pongWaitMs: 5000,
+  },
 });
 
 wss.on("connection", (websocket, incomingMessage) => {