From 49d723593d95e090161fee309d552f9854705588 Mon Sep 17 00:00:00 2001
From: Matt Broadstone <mbroadst@mongodb.com>
Date: Wed, 30 Oct 2019 15:53:09 -0400
Subject: [PATCH] fix(sdam): ignore server errors when closing/closed

---
 lib/core/sdam/topology.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/core/sdam/topology.js b/lib/core/sdam/topology.js
index 5aa5df773f..35f241144e 100644
--- a/lib/core/sdam/topology.js
+++ b/lib/core/sdam/topology.js
@@ -1039,8 +1039,12 @@ function serverConnectEventHandler(server, topology) {
   };
 }
 
-function serverErrorEventHandler(server /*, topology */) {
+function serverErrorEventHandler(server, topology) {
   return function(err) {
+    if (topology.s.state === STATE_CLOSING || topology.s.state === STATE_CLOSED) {
+      return;
+    }
+
     if (isSDAMUnrecoverableError(err, server)) {
       resetServerState(server, err, { clearPool: true });
       return;