From 5aa8c005ec28de2aa66d4cb457b596fdf37f5e44 Mon Sep 17 00:00:00 2001
From: Bert Belder <bertbelder@gmail.com>
Date: Sat, 9 Jul 2011 21:31:48 +0200
Subject: [PATCH] Windows: call shutdown before closesocket to ensure graceful
 disconnect

---
 src/uv-win.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/uv-win.c b/src/uv-win.c
index b92eb36b2..704b9cf21 100644
--- a/src/uv-win.c
+++ b/src/uv-win.c
@@ -761,6 +761,12 @@ static int uv_close_error(uv_handle_t* handle, uv_err_t e) {
   switch (handle->type) {
     case UV_TCP:
       tcp = (uv_tcp_t*)handle;
+      /* If we don't shutdown before calling closesocket, windows will */
+      /* silently discard the kernel send buffer and reset the connection. */
+      if (!(tcp->flags & UV_HANDLE_SHUT)) {
+        shutdown(tcp->socket, SD_SEND);
+        tcp->flags |= UV_HANDLE_SHUT;
+      }
       tcp->flags &= ~(UV_HANDLE_READING | UV_HANDLE_LISTENING);
       closesocket(tcp->socket);
       if (tcp->reqs_pending == 0) {