Make default HTTP headers case-insensitive

Cloase #644

CHANGELOG.rst

@@ -9,9 +9,11 @@ This project adheres to `Semantic Versioning <http://semver.org/>`_.
 `1.0.0-dev`_ (unreleased)
 -------------------------
 
+* Added ``true``/``false`` as valid values for ``--verify``
+  (in addition to ``yes``/``no``) and the boolean value is case-insensitive.
+* Fixed default headers being incorrectly case-sensitive.
 * Removed Python 2.6 support.
-* ``--verify`` now accepts ``true``/``false`` in addition to ``yes``/``no``
+
-  and the boolean value is case-insensitive.
 
 
 `0.9.8`_ (2016-12-08)

httpie/client.py

@@ -3,6 +3,7 @@ import sys
 
 import requests
 from requests.adapters import HTTPAdapter
+from requests.structures import CaseInsensitiveDict
 
 from httpie import sessions
 from httpie import __version__
@@ -106,9 +107,9 @@ def finalize_headers(headers):
 
 
 def get_default_headers(args):
-    default_headers = {
+    default_headers = CaseInsensitiveDict({
         'User-Agent': DEFAULT_UA
-    }
+    })
 
     auto_json = args.data and not args.form
     if args.json or auto_json:

tests/test_defaults.py

@@ -7,6 +7,21 @@ from utils import MockEnvironment, http, HTTP_OK
 from fixtures import FILE_PATH
 
 
+def test_default_headers_case_insensitive(httpbin):
+    """
+    <https://github.com/jakubroztocil/httpie/issues/644>
+    """
+    r = http(
+        '--debug',
+        '--print=H',
+        httpbin.url + '/post',
+        'CONTENT-TYPE:application/json-patch+json',
+        'a=b',
+    )
+    assert 'CONTENT-TYPE: application/json-patch+json' in r
+    assert 'Content-Type' not in r
+
+
 class TestImplicitHTTPMethod:
     def test_implicit_GET(self, httpbin):
         r = http(httpbin.url + '/get')