From cd3a82222f06400af8d386a2fdcbf68778148e02 Mon Sep 17 00:00:00 2001
From: Dave Carlson <dcarlson@fb.com>
Date: Sat, 21 Oct 2023 13:11:19 -0700
Subject: [PATCH] restore compat with socket.io v2 client

---
 lib/server/websocket.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/server/websocket.js b/lib/server/websocket.js
index 2924db0554d..95da7d906ce 100644
--- a/lib/server/websocket.js
+++ b/lib/server/websocket.js
@@ -75,7 +75,9 @@ function init (env, ctx, server) {
       'log level': 0
     }).listen(server, {
       //these only effect the socket.io.js file that is sent to the client, but better than nothing
-      'browser client minification': true
+      // compat with v2 client
+      allowEIO3: true
+      , 'browser client minification': true
       , 'browser client etag': true
       , 'browser client gzip': false
       , 'perMessageDeflate': {