Ensure custom headers override defaults (always lowercase)

tomchristie · tomchristie · commit 154f36a133ad · 2016-01-20T12:41:44.000Z
diff --git a/coreapi/__init__.py b/coreapi/__init__.py
@@ -7,7 +7,7 @@
 from coreapi.transport import BaseTransport, HTTPTransport
 
 
-__version__ = '1.11.1'
+__version__ = '1.11.2'
 __all__ = [
     'BaseCodec', 'CoreJSONCodec', 'HALCodec', 'HTMLCodec', 'PlainTextCodec', 'PythonCodec',
     'negotiate_encoder', 'negotiate_decoder',
diff --git a/coreapi/transport.py b/coreapi/transport.py
@@ -39,6 +39,8 @@ class HTTPTransport(BaseTransport):
     schemes = ['http', 'https']
 
     def __init__(self, credentials=None, headers=None):
+        if headers:
+            headers = {key.lower(): value for key, value in headers.items()}
         self._credentials = itypes.Dict(credentials or {})
         self._headers = itypes.Dict(headers or {})
 
