From 5de610bc42eeb76dacd8a8f4feb2b1e157f15a0e Mon Sep 17 00:00:00 2001
From: Xiaoxin Lu <xiaoxin.lu@genesys.com>
Date: Tue, 22 Jun 2021 12:29:05 -0400
Subject: [PATCH] Fix websocket timer throttle blocking writes

---
 lib/transports/websocket.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/transports/websocket.js b/lib/transports/websocket.js
index 7e5193e64..c9a82cb95 100644
--- a/lib/transports/websocket.js
+++ b/lib/transports/websocket.js
@@ -161,10 +161,10 @@ class WS extends Transport {
         if (lastPacket) {
           // fake drain
           // defer to next tick to allow Socket to clear writeBuffer
-          setTimeout(() => {
+          Promise.resolve().then(() => {
             this.writable = true;
             this.emit("drain");
-          }, 0);
+          });
         }
       });
     }