From c436d7aa8df246dcb9e70a6a16fe558618c60d13 Mon Sep 17 00:00:00 2001
From: Bret Taylor <btaylor@gmail.com>
Date: Mon, 11 Jan 2010 14:17:27 -0800
Subject: [PATCH] Fix new connection close handler for WSGI handlers

---
 tornado/web.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tornado/web.py b/tornado/web.py
index 1c4b17a0..abe91266 100644
--- a/tornado/web.py
+++ b/tornado/web.py
@@ -92,8 +92,10 @@ class RequestHandler(object):
         self.ui["modules"] = _O((n, self._ui_module(n, m)) for n, m in
                                 application.ui_modules.iteritems())
         self.clear()
-        self.request.connection.stream.set_close_callback(
-            self.on_connection_close)
+        # Check since connection is not available in WSGI
+        if hasattr(self.request, "connection"):
+            self.request.connection.stream.set_close_callback(
+                self.on_connection_close)
 
     @property
     def settings(self):