From 6f4f72988bddf1ff73b89dd6abc55602671d1d55 Mon Sep 17 00:00:00 2001
From: Aymeric Augustin
Date: Mon, 25 Nov 2013 09:48:47 +0100
Subject: Support non-str keys in request.META.

Fix #482.
---
 debug_toolbar/panels/headers.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/debug_toolbar/panels/headers.py b/debug_toolbar/panels/headers.py
index 0138299..265ec6b 100644
--- a/debug_toolbar/panels/headers.py
+++ b/debug_toolbar/panels/headers.py
@@ -39,7 +39,7 @@ class HeadersPanel(Panel):
     def process_request(self, request):
         wsgi_env = list(sorted(request.META.items()))
         self.request_headers = OrderedDict(
-            (unmangle(k), v) for (k, v) in wsgi_env if k.startswith('HTTP_'))
+            (unmangle(k), v) for (k, v) in wsgi_env if is_http_header(k))
         if 'Cookie' in self.request_headers:
             self.request_headers['Cookie'] = '=> see Request panel'
         self.environ = OrderedDict(
@@ -56,5 +56,11 @@ class HeadersPanel(Panel):
         })
 
 
+def is_http_header(wsgi_key):
+    # The WSGI spec says that keys should be str objects in the environ dict,
+    # but this isn't true in practice. See issues #449 and #482.
+    return isinstance(wsgi_key, str) and wsgi_key.startswith('HTTP_')
+
+
 def unmangle(wsgi_key):
     return wsgi_key[5:].replace('_', '-').title()
-- 
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