Added binary flag to _waker_reader and _waker_writer

diff --git a/tornado/ioloop.py b/tornado/ioloop.py
index 173d2c09ff114d7b27255955498c02bd6a45855b..9c4d63a7898333115eb0004eb7cc09902c02e1a3 100644 (file)
--- a/tornado/ioloop.py
+++ b/tornado/ioloop.py
@@ -114,8 +114,8 @@ class IOLoop(object):
             self._set_nonblocking(w)
             self._set_close_exec(r)
             self._set_close_exec(w)
-            self._waker_reader = os.fdopen(r, "r", 0)
-            self._waker_writer = os.fdopen(w, "w", 0)
+            self._waker_reader = os.fdopen(r, "rb", 0)
+            self._waker_writer = os.fdopen(w, "wb", 0)
         else:
             self._waker_reader = self._waker_writer = win32_support.Pipe()
             r = self._waker_writer.reader_fd