From d0fef41f7b9d062a190847745ac2666c0065bfd0 Mon Sep 17 00:00:00 2001
From: Edward Hades <edward.hades@gmail.com>
Date: Wed, 7 Sep 2011 23:50:38 +0200
Subject: [PATCH] Client: avoid header corruption

Before this the Client.request method was able to corrupt the headers dict
passed by the user, since all complex objects are passed by reference.
---
 oauth2/__init__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/oauth2/__init__.py b/oauth2/__init__.py
index 835270e3..736f3975 100644
--- a/oauth2/__init__.py
+++ b/oauth2/__init__.py
@@ -23,6 +23,7 @@
 """
 
 import base64
+import copy
 import urllib
 import time
 import random
@@ -642,6 +643,8 @@ def request(self, uri, method="GET", body='', headers=None,
 
         if not isinstance(headers, dict):
             headers = {}
+        else:
+            headers = copy.copy(headers)
 
         if method == "POST":
             headers['Content-Type'] = headers.get('Content-Type',