From 2a9f37defb145383f0c572cbe45ea3b2201a343f Mon Sep 17 00:00:00 2001
From: Unrud <unrud@openaliasbox.org>
Date: Fri, 2 Sep 2016 14:41:31 +0200
Subject: [PATCH] Repair authentication

---
 radicale/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/radicale/__init__.py b/radicale/__init__.py
index 234e0ef..06354d9 100644
--- a/radicale/__init__.py
+++ b/radicale/__init__.py
@@ -388,7 +388,7 @@ class Application:
             self.logger.info("%s refused" % (user or "Anonymous user"))
             status = client.UNAUTHORIZED
             realm = self.configuration.get("server", "realm")
-            headers = headers.copy()
+            headers = dict(headers)
             headers.update ({
                 "WWW-Authenticate":
                 "Basic realm=\"%s\"" % realm})