From 62ada2a2d09c9e1ed059013a21eb22dd2847b849 Mon Sep 17 00:00:00 2001
From: Matt Broadstone <mbroadst@mongodb.com>
Date: Wed, 30 Oct 2019 15:14:03 -0400
Subject: [PATCH] fix(server): don't emit error in connect if closing/closed

---
 lib/core/sdam/server.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/core/sdam/server.js b/lib/core/sdam/server.js
index 46ce8d2c34..0f00363ba4 100644
--- a/lib/core/sdam/server.js
+++ b/lib/core/sdam/server.js
@@ -166,6 +166,7 @@ class Server extends EventEmitter {
     relayEvents(this.s.pool, this, ['commandStarted', 'commandSucceeded', 'commandFailed']);
 
     stateTransition(this, STATE_CONNECTING);
+
     this.s.pool.connect(connectEventHandler(this));
   }
 
@@ -465,10 +466,14 @@ function executeWriteOperation(args, options, callback) {
 
 function connectEventHandler(server) {
   return function(err, conn) {
+    if (server.s.state === STATE_CLOSING || server.s.state === STATE_CLOSED) {
+      return;
+    }
+
     if (err) {
       server.emit('error', new MongoNetworkError(err));
 
-      stateTransition(this, STATE_CLOSED);
+      stateTransition(server, STATE_CLOSED);
       server.emit('close');
       return;
     }