Use errno_from_exception on error caught in Waker

Addresses part of gh-1907

diff --git a/tornado/platform/common.py b/tornado/platform/common.py
index 2d4065ca633aaeb20d4cda2031687f8a1cb2513d..d78ee6866bf6a2d0fdcff137bddbbfe4d92836fd 100644 (file)
--- a/tornado/platform/common.py
+++ b/tornado/platform/common.py
@@ -6,7 +6,7 @@ import socket
 import time
 
 from tornado.platform import interface
-
+from tornado.util import errno_from_exception
 
 def try_close(f):
     # Avoid issue #875 (race condition when using the file in another
@@ -61,7 +61,7 @@ class Waker(interface.Waker):
                 break    # success
             except socket.error as detail:
                 if (not hasattr(errno, 'WSAEADDRINUSE') or
-                        detail[0] != errno.WSAEADDRINUSE):
+                        errno_from_exception(detail) != errno.WSAEADDRINUSE):
                     # "Address already in use" is the only error
                     # I've seen on two WinXP Pro SP2 boxes, under
                     # Pythons 2.3.5 and 2.4.1.