From d6c3dc87e08e72589cb6da04dbb81c1ca91b8831 Mon Sep 17 00:00:00 2001
From: Julien Fontanet <julien.fontanet@isonoe.net>
Date: Wed, 10 Aug 2022 16:53:38 +0200
Subject: [PATCH] feat(xo-server): avoid warning if client WS has been closed

Fixes part of zammad#8826
---
 packages/xo-server/src/index.mjs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/xo-server/src/index.mjs b/packages/xo-server/src/index.mjs
index bf57cf91f..1b0bd1db9 100644
--- a/packages/xo-server/src/index.mjs
+++ b/packages/xo-server/src/index.mjs
@@ -612,7 +612,11 @@ const setUpApi = (webServer, xo, config) => {
 
     const onSend = error => {
       if (error) {
-        log.warn('WebSocket send:', { error })
+        // even if the readyState of the socket is checked, it can still happen
+        // that the message failed to be sent because the connection was closed.
+        if (error.code !== 'ERR_STREAM_DESTROYED') {
+          log.warn('WebSocket send:', { error })
+        }
       }
     }
     jsonRpc.on('data', data => {