From 9cbb8e3de32552934cfbd699f28af79de50739c1 Mon Sep 17 00:00:00 2001
From: Peter Makowski <peter.makowski@canonical.com>
Date: Wed, 26 Jun 2024 13:59:27 +0200
Subject: [PATCH] fix: limit WebSocket message backlog on reconnection 3.4
 backport (#5489)

Signed-off-by: Peter Makowski <peter.makowski@canonical.com>
---
 src/websocket-client.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/websocket-client.ts b/src/websocket-client.ts
index 74948a6f18..c669ad2a84 100644
--- a/src/websocket-client.ts
+++ b/src/websocket-client.ts
@@ -160,6 +160,10 @@ export class WebSocketClient {
   connect(): ReconnectingWebSocket {
     this.rws = new ReconnectingWebSocket(this.buildURL(), undefined, {
       debug: process.env.REACT_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;
   }