From fc364cca7d406464d09cb628756d81dc52a4204d Mon Sep 17 00:00:00 2001
From: "Paul J. Davis" <paul.joseph.davis@gmail.com>
Date: Thu, 26 Jun 2014 14:31:40 -0500
Subject: [PATCH] Fix check for file-like objects

The `is_fileobject()` function in utils.py would break when the respones
was a wrapped `HTTPResponse`'s `raw` attribute. This just adds the
`IOError` exception type to the `is_fileobject()` function so that the
response can be streamed normally.

Fixes #805
---
 gunicorn/util.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gunicorn/util.py b/gunicorn/util.py
index 9ef79a3a..b7d3a67a 100644
--- a/gunicorn/util.py
+++ b/gunicorn/util.py
@@ -515,7 +515,7 @@ def is_fileobject(obj):
     # check BytesIO case and maybe others
     try:
         obj.fileno()
-    except io.UnsupportedOperation:
+    except (IOError, io.UnsupportedOperation):
         return False
 
     return True