case-insensitive check for header fields

sanic/request.py

@@ -242,11 +242,11 @@ def parse_multipart_form(body, boundary):
             form_header_value, form_parameters = parse_header(
                 form_line[colon_index + 2:])
 
-            if form_header_field == 'Content-Disposition':
+            if form_header_field.lower() == 'content-disposition':
                 if 'filename' in form_parameters:
                     file_name = form_parameters['filename']
                 field_name = form_parameters.get('name')
-            elif form_header_field == 'Content-Type':
+            elif form_header_field.lower() == 'content-type':
                 file_type = form_header_value
 
         post_data = form_part[line_index:-4]

tests/test_requests.py

@@ -259,20 +259,26 @@ def test_post_form_urlencoded():
 
     assert request.form.get('test') == 'OK'
 
-
-def test_post_form_multipart_form_data():
+@pytest.mark.parametrize(
+    'payload', [
+        '------sanic\r\n' \
+        'Content-Disposition: form-data; name="test"\r\n' \
+        '\r\n' \
+        'OK\r\n' \
+        '------sanic--\r\n',
+        '------sanic\r\n' \
+        'content-disposition: form-data; name="test"\r\n' \
+        '\r\n' \
+        'OK\r\n' \
+        '------sanic--\r\n',
+    ])
+def test_post_form_multipart_form_data(payload):
     app = Sanic('test_post_form_multipart_form_data')
 
     @app.route('/', methods=['POST'])
     async def handler(request):
         return text('OK')
 
-    payload = '------sanic\r\n' \
-              'Content-Disposition: form-data; name="test"\r\n' \
-              '\r\n' \
-              'OK\r\n' \
-              '------sanic--\r\n'
-
     headers = {'content-type': 'multipart/form-data; boundary=----sanic'}
 
     request, response = app.test_client.post(data=payload, headers=headers)