From 25a3204fe29a8470f5a90a6bf424059757a09363 Mon Sep 17 00:00:00 2001
From: Dimitris Halatsis <dimitris_ha@hotmail.com>
Date: Fri, 15 Jan 2021 12:11:31 +0200
Subject: [PATCH] http: don't cork .end when not needed

PR-URL: https://github.com/nodejs/node/pull/36633
Backport-PR-URL: https://github.com/nodejs/node/pull/36940
Fixes: https://github.com/nodejs/node/issues/36620
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Danielle Adams <adamzdanielle@gmail.com>
---
 lib/_http_outgoing.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/_http_outgoing.js b/lib/_http_outgoing.js
index e3a032ad21273b..c8a393ddcf31b4 100644
--- a/lib/_http_outgoing.js
+++ b/lib/_http_outgoing.js
@@ -775,7 +775,8 @@ OutgoingMessage.prototype.end = function end(chunk, encoding, callback) {
     encoding = null;
   }
 
-  if (this.socket) {
+  // Not finished, socket exists and data will be written (chunk or header)
+  if (this.socket && !this.finished && (chunk || !this._header)) {
     this.socket.cork();
   }