From ae9a4fffa64ff8499b61c9a41be445448204cf31 Mon Sep 17 00:00:00 2001
From: Tim Perry <pimterry@gmail.com>
Date: Wed, 23 Jun 2021 16:20:08 +0200
Subject: [PATCH] doc: add docs for duplex.allowHalfOpen property

---
 doc/api/stream.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/doc/api/stream.md b/doc/api/stream.md
index 39dfbc8ab5c8bb..dfc69bebb3dfb4 100644
--- a/doc/api/stream.md
+++ b/doc/api/stream.md
@@ -1593,6 +1593,21 @@ Examples of `Duplex` streams include:
 * [zlib streams][zlib]
 * [crypto streams][crypto]
 
+##### `duplex.allowHalfOpen`
+<!-- YAML
+added: v0.9.4
+-->
+
+* {boolean}
+
+If `false` then the stream will automatically end the writable side when the
+readable side ends. Set initially by the `allowHalfOpen` constructor option,
+which defaults to `false`.
+
+This can be changed manually to change the half-open behavior of an existing
+`Duplex` stream instance, but must be changed before the `'end'` event is
+emitted.
+
 #### Class: `stream.Transform`
 <!-- YAML
 added: v0.9.4