From 0f53cd0517cfa5ab2b56615488b0bacb758b54bc Mon Sep 17 00:00:00 2001
From: Bartosz Sosnowski <bartosz@janeasystems.com>
Date: Thu, 26 Apr 2018 19:45:36 +0200
Subject: [PATCH] win, pipe: stop read for overlapped pipe

Adds CancelIoEx call when uv_read_stop on overlapped pipe.

Refs: https://github.com/nodejs/node/pull/19377
PR-URL: https://github.com/libuv/libuv/pull/1822
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
---
 src/win/pipe.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/win/pipe.c b/src/win/pipe.c
index 0ecfbf1f..83ee4f99 100644
--- a/src/win/pipe.c
+++ b/src/win/pipe.c
@@ -735,6 +735,13 @@ void uv__pipe_unpause_read(uv_pipe_t* handle) {
 
 
 void uv__pipe_stop_read(uv_pipe_t* handle) {
+  if (pCancelIoEx &&
+      !(handle->flags & UV_HANDLE_NON_OVERLAPPED_PIPE) &&
+      !(handle->flags & UV_HANDLE_EMULATE_IOCP) &&
+      handle->flags & UV_HANDLE_READING &&
+      handle->read_req.type == UV_READ) {
+    pCancelIoEx(handle->handle, &handle->read_req.u.io.overlapped);
+  }
   handle->flags &= ~UV_HANDLE_READING;
   uv__pipe_pause_read((uv_pipe_t*)handle);
   uv__pipe_unpause_read((uv_pipe_t*)handle);