use CaseInsensitiveDict

ox/cache.py

@@ -13,6 +13,7 @@ import zlib
 from io import BytesIO
 import urllib
 import requests
+from requests.structures import CaseInsensitiveDict
 
 
 from .utils import json
@@ -65,7 +66,7 @@ def get_headers(url, data=None, headers=None, timeout=cache_timeout):
     if not url_headers:
         url_headers = net.get_headers(url, data, headers)
         store.set(url, data, -1, url_headers)
-    return url_headers
+    return CaseInsensitiveDict(url_headers)
 
 def get_json(url, data=None, headers=None, timeout=cache_timeout):
     return json.loads(read_url(url, data, headers, timeout).decode('utf-8'))
@@ -261,6 +262,8 @@ class SQLiteCache(Cache):
             data = zlib.compress(data)
         else:
             compressed = 0
+        if isinstance(data, str):
+            data = data.encode("utf-8")
         data = sqlite3.Binary(data)
 
         #fixme: this looks wrong