From: Ben Darnell <ben@bendarnell.com>
Date: Sun, 7 Jul 2013 17:38:08 +0000 (-0400)
Subject: Clear the write buffer when an IOStream is closed.
X-Git-Tag: v3.2.0b1~108
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c43996288e52a8f68728164f9284cf286d38543a;p=thirdparty%2Ftornado.git

Clear the write buffer when an IOStream is closed.

Closes #828.
---

diff --git a/tornado/iostream.py b/tornado/iostream.py
index 550e68da9..6a507a81d 100644
--- a/tornado/iostream.py
+++ b/tornado/iostream.py
@@ -274,6 +274,10 @@ class BaseIOStream(object):
             self._run_callback(cb)
             # Delete any unfinished callbacks to break up reference cycles.
             self._read_callback = self._write_callback = None
+            # Clear the buffers so they can be cleared immediately even
+            # if the IOStream object is kept alive by a reference cycle.
+            # TODO: Clear the read buffer too; it currently breaks some tests.
+            self._write_buffer = None
 
     def reading(self):
         """Returns true if we are currently reading from the stream."""