From c6da8b6fe7bd8ac26c251092f1d764ffa6fe655f Mon Sep 17 00:00:00 2001
From: chengkang <1412950785@qq.com>
Date: Fri, 20 Jul 2018 16:53:05 +0800
Subject: [PATCH] fix issue #2448

---
 tornado/http1connection.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tornado/http1connection.py b/tornado/http1connection.py
index 0002f857b..e2b4c787e 100644
--- a/tornado/http1connection.py
+++ b/tornado/http1connection.py
@@ -399,7 +399,7 @@ class HTTP1Connection(httputil.HTTPConnection):
             if chunk:
                 data += self._format_chunk(chunk)
             self._pending_write = self.stream.write(data)
-            self._pending_write.add_done_callback(self._on_write_complete)
+            future_add_done_callback(self._pending_write, self._on_write_complete)
         return future
 
     def _format_chunk(self, chunk):
-- 
2.47.2