From 9ae0eac34ada590d6f4b8759a2079b543e089c41 Mon Sep 17 00:00:00 2001
From: Robert Nagy <ronagy@icloud.com>
Date: Wed, 1 Nov 2023 17:27:43 +0100
Subject: [PATCH] fix: stream body handling

Make sure stream body always has an error handler.

Make sure not to leave dangling event listeners.
---
 lib/client.js       | 24 +++++-------------------
 lib/core/request.js | 41 ++++++++++++++++++++++++++++++++++++++++-
 lib/core/util.js    |  2 +-
 3 files changed, 46 insertions(+), 21 deletions(-)

diff --git a/lib/client.js b/lib/client.js
index 00f4467cc8b..c51cff1ed00 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -1462,23 +1462,7 @@ function _resume (client, sync) {
       return
     }
 
-    if (util.isStream(request.body) && util.bodyLength(request.body) === 0) {
-      request.body
-        .on('data', /* istanbul ignore next */ function () {
-          /* istanbul ignore next */
-          assert(false)
-        })
-        .on('error', function (err) {
-          errorRequest(client, request, err)
-        })
-        .on('end', function () {
-          util.destroy(this)
-        })
-
-      request.body = null
-    }
-
-    if (client[kRunning] > 0 &&
+    if (client[kRunning] > 0 && util.bodyLength(request.body) !== 0 &&
       (util.isStream(request.body) || util.isAsyncIterable(request.body))) {
       // Request with stream or iterator body can error while other requests
       // are inflight and indirectly error those as well.
@@ -1527,7 +1511,9 @@ function write (client, request) {
     body.read(0)
   }
 
-  let contentLength = util.bodyLength(body)
+  const bodyLength = util.bodyLength(body)
+
+  let contentLength = bodyLength
 
   if (contentLength === null) {
     contentLength = request.contentLength
@@ -1623,7 +1609,7 @@ function write (client, request) {
   }
 
   /* istanbul ignore else: assertion */
-  if (!body) {
+  if (!body || bodyLength === 0) {
     if (contentLength === 0) {
       socket.write(`${header}content-length: 0\r\n\r\n`, 'latin1')
     } else {
diff --git a/lib/core/request.js b/lib/core/request.js
index 43973884f1a..1b938bd5747 100644
--- a/lib/core/request.js
+++ b/lib/core/request.js
@@ -112,10 +112,28 @@ class Request {
 
     this.method = method
 
+    this.abort = null
+
     if (body == null) {
       this.body = null
     } else if (util.isStream(body)) {
       this.body = body
+
+      if (!this.body._readableState?.autoDestroy) {
+        this.endHandler = function autoDestroy () {
+          util.destroy(this)
+        }
+        this.body.on('end', this.endHandler)
+      }
+
+      this.errorHandler = err => {
+        if (this.abort) {
+          this.abort(err)
+        } else {
+          this.error = err
+        }
+      }
+      this.body.on('error', this.errorHandler)
     } else if (util.isBuffer(body)) {
       this.body = body.byteLength ? body : null
     } else if (ArrayBuffer.isView(body)) {
@@ -236,7 +254,12 @@ class Request {
     assert(!this.aborted)
     assert(!this.completed)
 
-    return this[kHandler].onConnect(abort)
+    if (this.error) {
+      abort(this.error)
+    } else {
+      this.abort = abort
+      return this[kHandler].onConnect(abort)
+    }
   }
 
   onHeaders (statusCode, headers, resume, statusText) {
@@ -265,6 +288,8 @@ class Request {
   }
 
   onComplete (trailers) {
+    this.onFinally()
+
     assert(!this.aborted)
 
     this.completed = true
@@ -275,6 +300,8 @@ class Request {
   }
 
   onError (error) {
+    this.onFinally()
+
     if (channels.error.hasSubscribers) {
       channels.error.publish({ request: this, error })
     }
@@ -286,6 +313,18 @@ class Request {
     return this[kHandler].onError(error)
   }
 
+  onFinally () {
+    if (this.errorHandler) {
+      this.body.off('error', this.errorHandler)
+      this.errorHandler = null
+    }
+
+    if (this.endHandler) {
+      this.body.off('end', this.endHandler)
+      this.endHandler = null
+    }
+  }
+
   // TODO: adjust to support H2
   addHeader (key, value) {
     processHeader(this, key, value)
diff --git a/lib/core/util.js b/lib/core/util.js
index 769811f57f7..f2ead039363 100644
--- a/lib/core/util.js
+++ b/lib/core/util.js
@@ -190,7 +190,7 @@ function isReadableAborted (stream) {
 }
 
 function destroy (stream, err) {
-  if (!isStream(stream) || isDestroyed(stream)) {
+  if (stream == null || !isStream(stream) || isDestroyed(stream)) {
     return
   }