From f796cc58e20f1c3594524c69ef0e112f37ac018f Mon Sep 17 00:00:00 2001
From: Peter Makowski <peter.makowski@canonical.com>
Date: Wed, 26 Jun 2024 11:39:30 +0200
Subject: [PATCH] fix: limit WebSocket message backlog on reconnection (#5487)

- Update WebSocket reconnection logic to prevent overwhelming the server with a flood of queued messages when the connection is re-established.
---
 src/websocket-client.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/websocket-client.ts b/src/websocket-client.ts
index 4844d1535e..51a227f7b2 100644
--- a/src/websocket-client.ts
+++ b/src/websocket-client.ts
@@ -162,6 +162,10 @@ export class WebSocketClient {
   connect(): ReconnectingWebSocket {
     this.rws = new ReconnectingWebSocket(this.buildURL(), undefined, {
       debug: import.meta.env.VITE_APP_WEBSOCKET_DEBUG === "true",
+      // Limit message backlog on reconnection to prevent overwhelming the server
+      // with a flood of queued messages when the connection is re-established.
+      // Typical page load generates 5-25 messages; buffer allows for additional user actions.
+      maxEnqueuedMessages: 30,
     });
     return this.rws;
   }