From c14aa07b94d684de8e2a23a54d0e6a3c25a2e460 Mon Sep 17 00:00:00 2001
From: Anna Henningsen <anna@addaleax.net>
Date: Thu, 7 Mar 2019 12:22:36 +0100
Subject: [PATCH] net: use kHandle symbol for accessing native handle

Use a common `kHandle` for all `StreamBase`-based streams.

PR-URL: https://github.com/nodejs/node/pull/26491
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
---
 lib/internal/http2/core.js          | 12 +++++-------
 lib/internal/stream_base_commons.js | 10 ++++++++--
 lib/net.js                          | 15 ++++++++++-----
 3 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/lib/internal/http2/core.js b/lib/internal/http2/core.js
index 8a83f083fe28bf..0e795d5aa1e397 100644
--- a/lib/internal/http2/core.js
+++ b/lib/internal/http2/core.js
@@ -106,13 +106,13 @@ const {
   updateSettingsBuffer
 } = require('internal/http2/util');
 const {
-  createWriteWrap,
   writeGeneric,
   writevGeneric,
   onStreamRead,
   kAfterAsyncWrite,
   kMaybeDestroy,
-  kUpdateTimer
+  kUpdateTimer,
+  kHandle
 } = require('internal/stream_base_commons');
 const {
   kTimeout,
@@ -151,7 +151,6 @@ const TLSServer = tls.Server;
 const kAlpnProtocol = Symbol('alpnProtocol');
 const kAuthority = Symbol('authority');
 const kEncrypted = Symbol('encrypted');
-const kHandle = Symbol('handle');
 const kID = Symbol('id');
 const kInit = Symbol('init');
 const kInfoHeaders = Symbol('sent-info-headers');
@@ -1798,13 +1797,12 @@ class Http2Stream extends Duplex {
     if (!this.headersSent)
       this[kProceed]();
 
-    const req = createWriteWrap(this[kHandle]);
-    req.stream = this[kID];
+    let req;
 
     if (writev)
-      writevGeneric(this, req, data, cb);
+      req = writevGeneric(this, data, cb);
     else
-      writeGeneric(this, req, data, encoding, cb);
+      req = writeGeneric(this, data, encoding, cb);
 
     trackWriteState(this, req.bytes);
   }
diff --git a/lib/internal/stream_base_commons.js b/lib/internal/stream_base_commons.js
index 9c3b60e584c033..4f52553692a402 100644
--- a/lib/internal/stream_base_commons.js
+++ b/lib/internal/stream_base_commons.js
@@ -17,6 +17,7 @@ const { owner_symbol } = require('internal/async_hooks').symbols;
 const kMaybeDestroy = Symbol('kMaybeDestroy');
 const kUpdateTimer = Symbol('kUpdateTimer');
 const kAfterAsyncWrite = Symbol('kAfterAsyncWrite');
+const kHandle = Symbol('kHandle');
 
 function handleWriteReq(req, data, encoding) {
   const { handle } = req;
@@ -87,7 +88,8 @@ function createWriteWrap(handle) {
   return req;
 }
 
-function writevGeneric(self, req, data, cb) {
+function writevGeneric(self, data, cb) {
+  const req = createWriteWrap(self[kHandle]);
   var allBuffers = data.allBuffers;
   var chunks;
   var i;
@@ -109,12 +111,15 @@ function writevGeneric(self, req, data, cb) {
   if (err === 0) req._chunks = chunks;
 
   afterWriteDispatched(self, req, err, cb);
+  return req;
 }
 
-function writeGeneric(self, req, data, encoding, cb) {
+function writeGeneric(self, data, encoding, cb) {
+  const req = createWriteWrap(self[kHandle]);
   var err = handleWriteReq(req, data, encoding);
 
   afterWriteDispatched(self, req, err, cb);
+  return req;
 }
 
 function afterWriteDispatched(self, req, err, cb) {
@@ -186,4 +191,5 @@ module.exports = {
   kAfterAsyncWrite,
   kMaybeDestroy,
   kUpdateTimer,
+  kHandle
 };
diff --git a/lib/net.js b/lib/net.js
index 2af6fedfd39d6d..4aac5fa75a8c84 100644
--- a/lib/net.js
+++ b/lib/net.js
@@ -58,11 +58,11 @@ const {
   symbols: { async_id_symbol, owner_symbol }
 } = require('internal/async_hooks');
 const {
-  createWriteWrap,
   writevGeneric,
   writeGeneric,
   onStreamRead,
   kAfterAsyncWrite,
+  kHandle,
   kUpdateTimer
 } = require('internal/stream_base_commons');
 const {
@@ -236,7 +236,7 @@ function Socket(options) {
   // probably be supplied by async_hooks.
   this[async_id_symbol] = -1;
   this._hadError = false;
-  this._handle = null;
+  this[kHandle] = null;
   this._parent = null;
   this._host = null;
   this[kLastWriteQueueSize] = 0;
@@ -714,11 +714,11 @@ Socket.prototype._writeGeneric = function(writev, data, encoding, cb) {
 
   this._unrefTimer();
 
-  var req = createWriteWrap(this._handle);
+  let req;
   if (writev)
-    writevGeneric(this, req, data, cb);
+    req = writevGeneric(this, data, cb);
   else
-    writeGeneric(this, req, data, encoding, cb);
+    req = writeGeneric(this, data, encoding, cb);
   if (req.async)
     this[kLastWriteQueueSize] = req.bytes;
 };
@@ -1608,6 +1608,11 @@ Object.defineProperty(TCP.prototype, 'owner', {
   set(v) { return this[owner_symbol] = v; }
 });
 
+Object.defineProperty(Socket.prototype, '_handle', {
+  get() { return this[kHandle]; },
+  set(v) { return this[kHandle] = v; }
+});
+
 
 Server.prototype.listenFD = internalUtil.deprecate(function(fd, type) {
   return this.listen({ fd: fd });