From 85247a0d8f7fb6ed6a1c74473809c320ec6a63af Mon Sep 17 00:00:00 2001
From: Pranshu Srivastava <rexagod@gmail.com>
Date: Sun, 14 Jun 2020 11:42:02 +0530
Subject: [PATCH] http: make http.OutgoingMessage inherit Stream.Writable

Fixes: https://github.com/nodejs/node/issues/28971
---
 lib/_http_outgoing.js | 30 +++++++++++++++++++++++++-----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/lib/_http_outgoing.js b/lib/_http_outgoing.js
index dade9a11014c01..4b09f242a23b2a 100644
--- a/lib/_http_outgoing.js
+++ b/lib/_http_outgoing.js
@@ -24,6 +24,7 @@
 const {
   ArrayIsArray,
   ObjectCreate,
+  ObjectDefineProperties,
   ObjectDefineProperty,
   ObjectKeys,
   ObjectPrototypeHasOwnProperty,
@@ -34,7 +35,7 @@ const {
 const { getDefaultHighWaterMark } = require('internal/streams/state');
 const assert = require('internal/assert');
 const EE = require('events');
-const Stream = require('stream');
+const { Stream, Writable } = require('stream');
 const internalUtil = require('internal/util');
 const { kOutHeaders, utcDate, kNeedDrain } = require('internal/http');
 const { Buffer } = require('buffer');
@@ -97,8 +98,8 @@ function OutgoingMessage() {
   // TCP socket and HTTP Parser and thus handle the backpressure.
   this.outputSize = 0;
 
-  this.writable = true;
-  this.destroyed = false;
+  this.writableProxy = true;
+  this.destroyedProxy = false;
 
   this._last = false;
   this.chunkedEncoding = false;
@@ -124,8 +125,27 @@ function OutgoingMessage() {
 
   this._onPendingData = noopPendingOutput;
 }
-ObjectSetPrototypeOf(OutgoingMessage.prototype, Stream.prototype);
-ObjectSetPrototypeOf(OutgoingMessage, Stream);
+ObjectSetPrototypeOf(OutgoingMessage.prototype, Writable.prototype);
+ObjectSetPrototypeOf(OutgoingMessage, Writable);
+
+ObjectDefineProperties(OutgoingMessage.prototype, {
+  writable: {
+    get() {
+      return this.writableProxy;
+    },
+    set(val) {
+      this.writableProxy = !!val;
+    }
+  },
+  destroyed: {
+    get() {
+      return this.destroyedProxy;
+    },
+    set(val) {
+      this.destroyedProxy = !!val;
+    }
+  }
+});
 
 ObjectDefineProperty(OutgoingMessage.prototype, 'writableFinished', {
   get() {