From ea36acfc8a997a19ba1ead58de0d1f01e9eb540f Mon Sep 17 00:00:00 2001
From: kevin <kevinbjiang@gmail.com>
Date: Thu, 30 Aug 2012 00:14:12 -0400
Subject: [PATCH 1/4] Fix overwritten Accept header when proxy is used

When a request specifies both an Accept header and a proxy server, the
Accept header value is overwritten.
---
 urllib3/poolmanager.py |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/urllib3/poolmanager.py b/urllib3/poolmanager.py
index 8f5b54c..7d7d6e4 100644
--- a/urllib3/poolmanager.py
+++ b/urllib3/poolmanager.py
@@ -141,7 +141,8 @@ def _set_proxy_headers(self, headers=None):
         headers = headers or {}
 
         # Same headers are curl passes for --proxy1.0
-        headers['Accept'] = '*/*'
+        if 'Accept' not in headers:
+            headers['Accept'] = '*/*'
         headers['Proxy-Connection'] = 'Keep-Alive'
 
         return headers
-- 
1.7.10